• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Process of casting by rotation-suspension of copper and device of casting by rotation-suspension of copper. In the present application a copper rotary-smelting process is disclosed which comprises: mixing a flow and/or smoke with dry mineral powders containing copper to form a mixed material, which enters a smelting furnace through a channel of material; allowing a reaction gas to form a flow of turbulence under the action of a turbulent, which enters the melting furnace through a Venturi channel under a guide of a turbulence gas channel; replenishing the reaction gas and/or a fuel in the melting furnace through an auxiliary oxygen channel and an auxiliary fuel channel; subjecting the turbulence flow that has been subjected to high velocity expansion through the Venturi channel and entering the melting furnace to a contact reaction with the mixed material; separating a melt, generated by the reaction that falls inside a decanting tank, in a waste layer and in a copper-containing product layer. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2666399A1
    申请号:ES201731272
    申请日:2017-10-31
    公开日:2018-05-04
    发明作者:Songlin Zhou；Zheling Ge；Zhipu Wang
    申请人:Yanggu Xiangguang Copper Co Ltd；
    IPC主号:
    专利说明:

    Rotation-suspension copper casting process and copper-rotation suspension casting device Field of the Invention
    The present invention relates to the technical field of metal sulfide smelting and, in particular, to a copper rotation-suspension casting process as well as a copper rotation-suspension casting device that is applicable to the process of smelting by rotation-suspension of copper. Background of the invention
    Currently, a metal sulfide concentrate melts in general with a form of pyrometallurgy, that is, a process in which sulfur and iron are extracted in the metal sulfide concentrate by reacting them with oxygen to finally obtain metals, in particular metals with respect to pyrometallurgy in metals such as copper, nickel. The pyrometallurgical process is generally classified into two categories: smelting of sedimentation deposits and space smelting, among which smelting by spatial suspension in substance refers to an oxidation reaction being completed instantaneously (in 2 ~ 3 seconds) using the large surface area of dry sulfide powdered minerals to allow sufficient binding of material particles (i.e. dry sulfide powdered minerals) to oxygen. The main central process used in space suspension casting is a direct current jet technique that uses a combined action of wind in central distribution and wind in a vertical process to achieve a gas-solid contact reaction; however, due to the influence of DC properties in the process mentioned above, there would be malignant situations such as
    low oxygen availability, high smoke rate, severe erosion corrosion in
    furnace liners, accumulation of raw material stacks of concentrates inside the oven without reaction, etc., during production.
    In order to address the above problems, a turbulence injection technique has also been developed in recent years, in which the gas is flowed in a spiral to achieve a contact reaction with particles of material; However, its operational effectiveness is not yet ideal and cannot meet the development trend of foundry techniques: high feed, high load, high oxygen concentration and high work rate ("High Four"). To abreviate). Therefore, how to further improve the smelting effect on copper sulphide has become a problem that currently and urgently needs to be solved by those skilled in the art. Summary of the invention
    In view of this, the present invention provides a copper rotation-suspension smelting process that is capable of further improving the effect of copper sulphide smelting and also provides a copper slewing-suspension smelting device that is applicable to the Rotation-suspension copper smelting process mentioned above.
    In order to achieve the aforementioned objectives, the present invention provides the following technical solutions.
    A process of smelting by rotation-suspension of copper, which comprises the steps of: mixing one of the dry copper concentrated powders and the matte copper powders with a flow and / or smoke in proportion to form a mixed material, entering the material
    mixed in a channel of material of a nozzle and also entering a tower of
    reaction inside a smelting furnace through the material channel; allow a reaction gas to form a turbulence flow under an action of a nozzle turbulence, the turbulence flow entering a nozzle turbulence gas channel, passing through a venturi channel of the nozzle under a guide from the turbulence gas channel and finally entering the reaction tower; subjecting the turbulence flow that has undergone a high speed expansion through the Venturi channel to a contact reaction with the mixed material within the reaction tower; separating a melt generated by the contact reaction that falls into a settling tank of the smelting furnace in a residue layer and in a product layer, in which, when the mixed material comprises copper concentrate powders, the layer of product is a matte copper layer and, when the material comprises matte copper powders, the product layer is a layer of raw copper.
    Preferably, the copper rotation-suspension smelting process as described above further comprises steps of: replenishing the reaction gas and / or a fuel in the reaction tower through an auxiliary oxygen channel and an auxiliary channel of nozzle fuel.
    Preferably, in the process of smelting by rotation-suspension of copper as described above, transporting the mixed material to the nozzle further comprises: transporting the mixed material in the nozzle using a transport pipe, in which the mixed material first enters a nozzle fluidization feeder to fluidize and then enter the material channel.
    Preferably, in the process of smelting by rotation-suspension of copper as described above, the concentration of oxygen in the reaction gas is 40% in VOL ~ 90% in VOL and the turbulence flow rate of the turbulence flow which Enter the smelting furnace is 220 m / s ~ 300 m / s.
    Preferably, in the process of smelting by rotation-suspension of copper as described above, the flow rate of the reaction gas injected through the auxiliary oxygen channel is 10 Nm 3 / h ~ 200 Nm 3 / h and the flow rate of the fuel injected by The auxiliary fuel channel is 10 Nm 3 / h ~ 100 Nm 3 / h.
    A copper rotation-suspension smelting device comprising a transport pipe, a smelting furnace and a nozzle that connects the transport pipe in communication with the smelting furnace, which is applicable to the rotation-suspension smelting process of copper according to any of the previous articles. wherein the nozzle comprises: a turbulence gas channel for guiding a reaction gas, which is provided with a turbulence in a gas inlet of the turbulence gas channel; a Venturi channel that is provided within the turbulence gas channel; a material channel that is sheathed outside the turbulence gas channel and in communication with the transport pipe.
    Preferably, in the copper rotation-suspension casting device as described above, the minimum inside diameter d of the Venturi channel is not more than the inside diameter D and is more than D / 2 of the turbulence gas channel.
    Preferably, in the copper rotation-suspension smelting device as described above, the turbulence is formed by connecting a gas inlet pipe perpendicular to the turbulence gas channel with the turbulence gas channel and the gas inlet pipe communicates with the turbulence gas channel to form a gas inlet comprising a contracted opening near the gas inlet pipe
    and a tangential opening near the turbulence gas channel. Preferably, in the copper rotation-suspension casting device as
    described above, there is a fluidization feeder provided at a site where the material channel communicates with the transport pipe and the transport pipe is provided inclined with respect to the material channel and has an inclination angle of 10 ~ 40 degrees relative to to the horizontal plane.
    Preferably, the copper rotation-suspension smelting device as described above further comprises: an auxiliary oxygen channel that is provided within the turbulence gas channel; an auxiliary fuel channel that is sheathed outside the auxiliary oxygen channel and placed inside the turbulence gas channel.
    Preferably, the copper rotation-suspension smelting device as described above further comprises an adjustment cone that is sheathed outside the external wall of the auxiliary fuel channel and can move axially back and forth along the length of the auxiliary fuel channel, as well as a controller that is provided outside the upper wall of the turbulence gas channel to control the movement of the adjustment cone.
    Preferably, in the copper rotation-suspension smelting device as described above, the turbulence gas channel, the Venturi channel, the material channel, the auxiliary oxygen channel and the auxiliary fuel channel are provided coaxially and the Upper wall of the turbulence gas channel is an arc-shaped wall.
    Preferably, in the copper rotation-suspension smelting device as described above, the gas outlet of the auxiliary fuel channel, the gas outlet of the auxiliary oxygen channel and the gas outlet of the turbulence gas channel are arranged to flush
    The copper rotation-suspension casting process of the present invention is carried
    out as follows. A mixed material consisting of dry copper concentrated powders or matte copper powders and a dry powder flow, etc. it is supplied homogeneously in a material channel of a nozzle and enters a reaction tower inside a smelting furnace through the material channel under a gravity action; a reaction gas enters a turbulence nozzle to form a turbulence flow, which enters a turbulence gas channel in a tangential direction to form a turbulence wind, and the turbulence wind moves within the gas channel of turbulence towards the reaction tower of a form of turbulence fluid, during which the turbulence wind passes through a Venturi channel and then injected into the reaction tower in the form of a turbulence flow with high velocity expansion , forming a jet turbulence gas; the jet turbulence gas quickly comes into contact with the mixed material that enters the reaction tower under a high-speed expansion action and drags the mixed material into the jet gas flow under a turbulence flow action, where the temperature rises continuously, the mixed material continually collides with the reaction gas to allow a rapid reaction and then enters a sedimentation tank (which is a constituent part of the smelting furnace) under the smelting furnace to form a matt layer of copper or a layer of raw copper (when the mixed material comprises copper concentrate powders, a matt copper layer is formed and, when the mixed material comprises matt copper powders, a raw copper layer is formed) and a layer of residue. The high temperature gas generated by the reaction is rich in sulfur dioxide and enters a recovery boiler through an exhaust port of the smelting furnace.
    By means of a contact reaction between the reaction gas in the form of a turbulence flow with high velocity expansion and the mixed material, the copper rotation-suspension smelting process of the present invention allows for a more sufficient smelting reaction, improve oxygen availability, reduce copper content
    of waste and also reduce the incidence of smoke. Meanwhile, the process not only
    It can employ a reaction gas with a high concentration enriched in oxygen, improves the sulfur dioxide content of the flue gases and reduces the heat brought by the flue gases, but it can also meet the requirements of the amount of feed with wide fluctuations and significantly improve their productivity.
    The copper rotation-suspension smelting device of the present invention comprises a transport pipe, a smelting furnace and a nozzle connecting the transport pipe in communication with the smelting furnace, in which the nozzle comprises a channel of turbulence gas, a turbulence, a Venturi channel and a material channel. The turbulence is provided at a gas inlet of the turbulence gas channel and serves to allow a reaction gas entering the turbulence gas channel to form a turbulence flow, in which, after the turbulence flow formed from the reaction gas, under the guidance of the turbulence gas channel, the turbulence flow rotates along its axial direction. Since the Venturi channel is fixedly arranged in the inner wall of the turbulence gas channel, the turbulence flow enters the Venturi channel, under whose action the turbulence flow is allowed to enter the smelting furnace ( specifically the reaction tower of the foundry furnace) in a state of high speed expansion. Meanwhile, the powder mixed material passes through the transport pipe to the material channel sheathed outside the turbulence gas channel and enters the smelting furnace together with the reaction gas that has formed a turbulence flow, allowing concentrated copper and matte copper powders to creep into the turbulence flow in a high temperature atmosphere and continually collide with the reaction gas for a rapid reaction. Subsequently, the resultant enters a sedimentation tank under the smelting furnace to form a matte copper layer or a raw copper layer and a residue layer. The high temperature gas generated by the reaction is rich in sulfur dioxide and
    enters a recovery boiler through an exhaust port of the smelting furnace. Brief description of the figures
    In order to more clearly illustrate embodiments of the present invention ortechnical solutions in the prior art, there will simply be introductions into figures thatare necessary to describe the embodiments or prior art here inahead. Apparently, the figures described below are only the modes ofembodiment of the present invention and, for the person skilled in the art, canobtain other figures based on the figures provided without any effortcreative.
    Fig. 1 is a structural schematic diagram of a casting device bycopper rotation-suspension provided in an embodiment of the presentinvention;
    Fig. 2 is a structural schematic diagram of a nozzle;
    Fig. 3 is a structural schematic diagram of another nozzle;
    Fig. 4 is a schematic diagram of the operation of a turbulence.
    In Figs. 1-4,1 - Nozzle, 2 - Fluidizing feeder, 3 - Transport pipe, 4 - Furnacefoundry;101 - Turbulence Gas Channel, 102 - Turbulenciador, 103 - Venturi Channel, 104 - Canalof material, 105 - Upper wall, 106 - Auxiliary oxygen channel, 107 - Auxiliary channelfuel, 108 - Adjustment cone, 109 - Controller;
    1021 - Gas inlet pipe, 1022 - Contracted opening, 1023 - Tangential opening Detailed description of the invention
    The present invention provides a copper rotation-suspension casting device that can further improve the casting effect of copper sulfide.
    In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described together with the figures in the embodiments of the present invention and, obviously, the described embodiments are only part of the embodiments of the present invention instead of all embodiments thereof. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of the present invention.
    As shown in Figs. 1-4, a copper rotation-suspension smelting device in an embodiment of the present invention mainly comprises a transport pipe 3, a smelting furnace 4 and a nozzle 1 connecting the transport pipe 3 in communication with the smelting furnace 4. The present application mainly improves the nozzle 1 and, specifically, the improved nozzle 1 comprises: a turbulence gas channel 101 for guiding a reaction gas, which is provided with a turbulence 102 that allows the gas of reaction form a turbulence flow over a gas inlet of the turbulence gas channel 101; a Venturi channel 103 that is coaxially provided within the turbulence gas channel 101 and is connected to the internal wall of the turbulence gas channel 101, in which the reaction gas that has formed the turbulence flow passes through the channel Venturi 103 and is injected into a reaction tower of the smelting furnace 4 in the form of a turbulence gas with high velocity expansion, forming a jet turbulence gas; a channel of material 104 that is
    sheathed outside the turbulence gas channel 101 and in communication with the
    transport pipe 3, which serves to transport a mixed material formed by mixing one of dry copper concentrate powders and matte copper powders with a flow and / or smoke in proportion.
    During operation of the copper rotation-suspension smelting device as described above, the mixed material supplied by the transport pipe 3 enters the reaction tower of the smelting furnace 4 through the material channel 104; and, at the same time, the reaction gas enters the turbulence gas channel 101 during which the reaction gas first enters the turbulence 102 to form a turbulence flow and then moves in an axial direction of the gas channel of turbulence 101 under the guidance of the turbulence gas channel 101, enters the Venturi channel 103, under the action of which, the turbulence flow enters the reaction tower in a state of high speed expansion to form a gas of jet turbulence. The jet turbulence gas quickly contacts the mixed material within the reaction tower under the action of high-speed expansion and drags the mixed material into the jet turbulence gas under the action of the turbulence flow, in which the temperature increases continuously, the mixed material continually collides with the reaction gas to allow a rapid reaction and then enters a sedimentation tank under the smelting furnace to form a matte copper layer or a raw copper layer (in which , when the mixed material comprises concentrated copper powders, a matte copper layer is formed and, when the mixed material comprises matt copper powders, a raw copper layer is formed) and a residue layer. The high temperature gas generated from the reaction is rich in sulfur dioxide and enters a waste heat boiler through an exhaust port of the smelting furnace 4.
    The copper smelting device by rotation-suspension in the present embodiment allows a more sufficient gas-liquid contact by configuring the nozzle as the structure mentioned above, thus making the smelting reaction advance sufficiently, improving the availability of oxygen , reducing the copper content of the waste and also reducing the incidence of smoke. Meanwhile, a reaction gas with a high concentration enriched with oxygen can be used, which improves the sulfur dioxide content of the flue gases and reduces the heat brought by the flue gases, and the device can meet the requirements of the feeding quantity with wide fluctuations, significantly improves their productivity and has low energy consumption and investment. In addition, since the structure mentioned above has a small reaction space and the reaction gas flows in the form of a turbulence flow, there is no dead zone of reaction in the reaction space and there is little washing on the refractory material of the furnace body ; In addition, the improved nozzle 1 has a simple structure and its control, operation, maintenance and others are more convenient and reliable, which can sufficiently use the potential energy of the fluid and also have a low operating cost.
    In order to further optimize the technical solution, in the smelting by rotation-suspension of copper in the present embodiment, with the minimum internal diameter of the Venturi channel 103 as d and the internal diameter of the turbulence gas channel 101 as D , D / 2 <d ≤ D is preferred and, as shown in Figs. 2 and 3, with the arc radius of the Venturi channel 103 as R, d <R <D is preferred. The numerical range selected as described above is more advantageous for the high-speed expansion of the reaction gas and, therefore, is selected as a preference. In addition, it is preferred that the lower end of the Venturi channel 103 be at an intersection between the arch of the Venturi channel 103 and the vertical wall of the turbulence gas channel 101, which further facilitates the accelerated expansion of the reaction gas and allows that the reaction gas meets a turbulence flow rate requirement of 220 m / s ~ 300 m / s after entering the reaction tower and allows rapid expansion of the gas flow to drag the mixed material around the flow of turbulence, causing the gas-liquid turbulence fluid
    formed have more energy and therefore provide better reaction conditions for
    facilitate multiple collision reactions between gas and solid, solid and solid.
    In addition, the Venturi channel 103 in the present embodiment can also comprise only a contracted segment and a circular throat segment, the port of the circular throat segment being flush with the gas outlet of the turbulence gas channel 101, as shown in Fig. 3. Said arrangement also allows the high-speed expansion of the reaction gas, which is why it is considered a preferred structure.
    In the present embodiment, the turbulence 102 comprises: a turbulence pipe; a gas inlet pipe 1021 in tangential communication with the turbulence pipe, in which a gas inlet formed by the gas inlet pipe 1021 in communication with the turbulence pipe comprises a contracted opening 1022 near the inlet pipe of gas 1021 and a tangential opening 1023 near the turbulence pipe, as shown in Fig. 4. In order to simplify the structure, it is preferred in the present embodiment that one side of the contracted opening 1022 is the external wall of the turbulence pipe and that the other side thereof forms the contracted opening 1022.
    Preferably, there is a fluidization feeder 2 provided at a site where the material channel 104 communicates with the transport pipe 3. In the present embodiment, the fluidization feeder 2 is added in order to make the mixed material between more homogeneously in the material channel 104 and thus between more homogeneously in the reaction tower, thus avoiding the phenomenon of segregation as far as possible and further highlighting the reaction effect.
    In addition, the transport pipe 3 is provided to be inclined with respect to the channel
    of material 104 and has an inclination angle of 10 ~ 40 degrees from the plane
    horizontal. In the present embodiment, the transport pipe 3 is provided to be inclined with respect to the nozzle 1 provided in a vertical direction as a whole, to reduce the impact force of the material that directly enters the nozzle 1 as far as if possible, thus avoiding damage to the structure inside the nozzle 1 due to the high impact force; in addition, the transport pipe 3 preferably has an inclination angle of 10 ~ 40 degrees with respect to the horizontal plane, to allow the mixed material to pass through a small inclination to flow in the feeder 2, thus allowing the mixed material a more homogeneous enter the nozzle 1 and provide better conditions for sufficient reaction within the reaction tower.
    More preferably, the copper rotation-suspension smelting device provided in the present embodiment further comprises an oxygen auxiliary channel 106 that is provided within the turbulence gas channel 101 and serves to replenish oxygen or the reaction gas to the reaction tower of the smelting furnace 4, as well as an auxiliary fuel channel 107 that is sheathed outside the auxiliary oxygen channel 106 and placed within the turbulence gas channel 101 and which serves to inject fuels into the tower of reaction to replenish the heat necessary for the reaction, as shown in Figs. 2 and 3. In the present embodiment, the auxiliary oxygen channel 106 injects the reaction gas into the reaction tower and the auxiliary fuel channel 107 injects fuels into the reaction tower to replenish the reaction gas and / or the heat; Meanwhile, both also serve to accelerate the expansion of the turbulence gas from the nozzle 1, thereby allowing the reaction to proceed more sufficiently and more efficiently.
    In the present embodiment, the copper rotation-suspension casting device further comprises an adjustment cone 108 that is sheathed outside the
    axially along the auxiliary fuel channel 107, as well as a controller 109
    which is provided outside the upper wall 105 of the turbulence gas channel 101 to control the movement of the adjusting cone 108. In the present embodiment, it is preferred that the auxiliary tubular fuel channel 107 be provided in the wall externally thereof with screw threads by means of which the adjusting cone 108 is connected to the auxiliary fuel channel 107, in which, when the controller 109 in the upper wall 105 controls the rotation of the auxiliary fuel channel 107, the up and down movement of adjusting cone 108 (which is similar to a feed screw nut mechanism). It is further preferred in the present embodiment that the lower limit of the movement of the adjusting cone 108 be in a position with the minimum inner diameter of the Venturi channel 103. The configuration of the above structure can meet the adjustment requirements on the amount of wind, the wind speed in different working conditions, and allows the reaction gas to expand the turbulence flow rapidly after entering the reaction tower, thus ensuring that the reaction proceeds sufficiently.
    As shown in Figs. 2 and 3, it is preferred that the turbulence gas channel 101, the Venturi channel 103, the material channel 104, the auxiliary oxygen channel 106 and the auxiliary fuel channel 107 be provided coaxially. It is preferred in the present embodiment that all the aforementioned parts be provided coaxially, allowing the nozzle 1 to have a more compact and reasonable structural distribution as well as a relatively high working reliability and also allowing a more uniform contact and mixing of the reaction gas and mixed material. Therefore, it is a preferred embodiment.
    In addition, it is further preferred that the upper wall 105 of the turbulence gas channel 101 be an arc-shaped wall, that is an arched roof, as shown in Figs. 2and 3. Said structure is
    turbulence formed from the reaction gas, which, compared to the structure of
    Flat roof in the prior art, has less influence on the effect of the spiral fluid of the turbulence flow and can facilitate faster downward movement (ie, being near the reaction tower) of the turbulence flow.
    In the present embodiment, it is preferred that the gas outlet of the auxiliary fuel channel 107, the gas outlet of the auxiliary oxygen channel 106 and the gas inlet of the turbulence gas channel 101 be flush. Said arrangement also facilitates sufficient mixing of the material mixed with the reaction gas in the reaction tower.
    The present embodiment further provides a copper rotation-suspension smelting process that can be applied to the above-mentioned copper rotation-suspension smelting device, which comprises the following steps.
    First, one of the concentrated copper powders and the matte copper powders is mixed with a flow and / or smoke in proportion to form a mixed material; the mixed material enters a material channel 104 through a transport pipe 3 and also enters a reaction tower inside a smelting furnace 4 that communicates with the material channel 104 through the material channel 104.
    Meanwhile, a reaction gas is allowed to enter a nozzle 1 during which the reaction gas first enters a turbulence of the nozzle 1 to form a turbulence flow under the action of the turbulence; the turbulence flow enters a turbulence gas channel 101 and then, under the guidance of the turbulence gas channel 101, passes through a Venturi channel 103 provided within the turbulence gas channel 101, in which the channel Venturi 103 allows the flow of turbulence to enter the reaction tower in a
    High speed expansion and a spiral fluid state.
    In addition, the reaction gas and / or a fuel are replenished in the reaction tower through an auxiliary oxygen channel 106 and an auxiliary fuel channel 107 to provide sufficient materials and the heat required for the reaction, thereby allowing a more sufficient reaction between the reaction gas and the mixed material.
    Subsequently, the turbulence flow that has undergone high speed expansion through the Venturi channel 103 enters the reaction tower and continuously collides with the mixed material to achieve a rapid reaction within the reaction tower.
    Finally, the melt generated from the reaction falls into the sedimentation tank below the reaction tower to form a residue layer and a product layer, in which, when the mixed material comprises concentrated copper powders, the The product layer is a matte copper layer and, when the material mix comprises matte copper powders, the product layer is a raw copper layer.
    It should be noted that each of the stages mentioned above is not limited to being operated in the sequence described above and, under the premise of meeting the process requirements, the steps mentioned above may be carried out in reverse sequence or simultaneously, for example, the reaction gas and the mixed material enter the nozzle 1 simultaneously.
    Specifically, in the process of smelting by rotation-suspension of copper, it is preferred that the concentration of oxygen in the reaction gas is 40% in VOL ~ 90% in VOL; that the turbulence flow rate when the swirl flow enters the smelting furnace 4 is 220 m / s ~ 300 m / s; the flow rate of the reaction gas injected through the auxiliary oxygen channel is 10 Nm 3 / h ~ 200 Nm 3 / h; and that the fuel flow injected by the auxiliary fuel channel 107 is 10 Nm 3 / h ~ 100 Nm 3 / h. Range selection
    Numeric above allows the reaction to be carried out sufficiently, further improving the
    casting effect Of course, under the premise that a normal casting reaction is guaranteed, the parameters mentioned above may be other numerical values and are not defined in the present embodiment.
    10 The structure of each part is described progressively in the present specification and, for the structure of each part, it is emphasized to illustrate its difference with respect to the existing structure. The complete and partial structures of the copper rotation-suspension smelting device can be obtained by combining the structures of several parts as described above.
    The above description of the disclosed embodiments allows any person skilled in the art to achieve or use the present invention. Different modifications to these embodiments will be readily apparent to those skilled in the art and the generic principles defined herein may be applied to other modes of
    20 realization without departing from the spirit or scope of the present invention. Therefore, the present disclosure is not limited to the embodiments shown in this document but must be in accordance with the broadest scope consistent with the novel principles and characteristics disclosed in this document.
    权利要求:
    Claims (12)
    [1]
    one. A process of smelting by rotation-suspension of copper, comprising: mixing one of the dry copper concentrated powders and the matte copper powders with a flow and / or smoke in proportion to form a mixed material, the mixed material entering a material channel of a nozzle and also entering a reaction tower inside a smelting furnace through the material channel; allow a reaction gas to form a turbulence flow under an action of a nozzle turbulence, the turbulence flow entering a nozzle turbulence gas channel, passing through a venturi channel of the nozzle under a guide from the turbulence gas channel and finally entering the reaction tower; subjecting the turbulence flow that has undergone a high speed expansion through the Venturi channel to a contact reaction with the mixed material within the reaction tower; separating a melt, generated by the contact reaction that falls into a sedimentation tank of the smelting furnace, into a residue layer and a product layer, where, when the mixed material comprises copper concentrate powders, The product layer is a matte copper layer and, when the material comprises matte copper powders, the product layer is a raw copper layer.
    [2]
    2. The copper smelting-rotation process according to claim 1, wherein it further comprises: replenishing the reaction gas and / or a fuel in the reaction tower through an auxiliary oxygen channel and an auxiliary channel of fuel from the nozzle.
    [3]
    3. The copper rotation-suspension smelting process according to claim 1, wherein the transport of the mixed material to the nozzle further comprises: transporting the mixed material into the nozzle using a transport pipe, wherein the mixed material first enters a fluidization feeder
    of the nozzle to fluidize and then enters the material channel.
    [4]
    Four. The copper smelting-rotation process according to claim 1, wherein the concentration of oxygen in the reaction gas is 40% in VOL ~ 90% in VOL and the turbulence flow rate of the flow of Turbulence that enters the melting furnace is 220 m / s ~ 300 m / s.
    [5]
    5. The copper smelting-rotation process according to claim 1, wherein the flow of the reaction gas injected through the auxiliary oxygen channel is 10 Nm 3 / h ~ 200 Nm 3 / h and the fuel flow injected by the auxiliary fuel channel is 10 Nm 3 / h ~ 100 Nm 3 / h.
    [6]
    6. A copper smelting-suspension casting device comprising a transport pipe, a smelting furnace and a nozzle connecting the transport pipe in communication with the smelting furnace, characterized by being applicable to a smelting process by rotation- Copper suspension according to claims 1-5, wherein the nozzle comprises: a turbulence gas channel for guiding a reaction gas, which is provided with a turbulence in a gas inlet of the turbulence gas channel; a Venturi channel that is provided within the turbulence gas channel; and a material channel that is sheathed outside the turbulence gas channel and in communication with the transport pipe.
    [7]
    7. The copper rotation-suspension casting device according to claim 6, wherein the minimum internal diameter d of the Venturi channel is not more than the internal diameter D and is more than D / 2 of the turbulence gas channel.
    gas perpendicular to the turbulence gas channel with the turbulence gas channel and the tube
    The gas inlet communicates with the turbulence gas channel to form a gas inlet comprising a contracted opening near the gas inlet pipe and a tangential opening near the turbulence gas channel.
    [9]
    9. The copper rotation-suspension smelting device according to claim 6, wherein there is a fluidization feeder arranged at a site where the material channel communicates with the transport conduit and the transport pipe is inclined with respect to to the material channel and has an inclination angle of 10 ~ 40 degrees with respect to the horizontal plane.
    [10]
    10. The copper rotation-suspension smelting device according to claim 6, further comprising: an auxiliary oxygen channel that is provided within the turbulence gas channel; an auxiliary fuel channel that is sheathed outside the auxiliary oxygen channel and placed inside the turbulence gas channel.
    [11]
    eleven. The copper rotation-suspension smelting device according to claim 10, further comprising an adjustment cone that is sheathed outside the external wall of the auxiliary fuel channel and can move axially back and forth to along the auxiliary fuel channel, as well as a controller that is provided outside the upper wall of the turbulence gas channel to control the movement of the adjustment cone.
    [12]
    12. The copper rotation-suspension smelting device according to claim 10, wherein the turbulence gas channel, the Venturi channel, the material channel, the auxiliary oxygen channel and the auxiliary fuel channel are coaxially provided and the upper wall of the turbulence gas channel is a wall in the form of
    arc.
    [13]
    13. The copper suspension-rotation smelting device according to claim 10, wherein the gas outlet of the auxiliary fuel channel, the gas outlet of the auxiliary oxygen channel and the gas outlet of the turbulence gas channel They are ready flush.
    Figure 1 Figure 2 Figure 3 Figure
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    同族专利:
    公开号 | 公开日
    CL2017002758A1|2018-04-13|
    JP2018111877A|2018-07-19|
    RU2685930C1|2019-04-23|
    MX2017013924A|2018-09-28|
    JP6677695B2|2020-04-08|
    CN106521182B|2019-05-21|
    US20180119249A1|2018-05-03|
    US10570481B2|2020-02-25|
    ES2666399B2|2019-01-28|
    CN106521182A|2017-03-22|
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