• 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:
    A process is disclosed for the preparation of milled crude potash salts containing kieserite, whereby the crude potash salt is conditioned at first with a chemical conditioning agent and subsequently with an auxiliary conditioning agent, whereupon the crude potash salt is fed to an electrostatic free fall separator.
    公开号:SU1433406A3
    申请号:SU853947153
    申请日:1985-08-30
    公开日:1988-10-23
    发明作者:Фрике Гюнтер
    申请人:Кали Унд Зальц Аг (Фирма)；
    IPC主号:
    专利说明:

    one
    with
    about f
     cm
    This invention relates to a method for electrostatically treating a potassium salt containing kizerite to produce a mixture of sylvine and kieserite.
    The purpose of the invention is to obtain a product with a given ratio of MgOrK O.
    According to the proposed method, the crude ialine salt for the destruction of crystalline splices is crushed to a grain size of 1–2 mm, then the ground salt is mixed with a conditioning agent — salicylic acid in an amount of 30–60 g per 1 ton of raw salt and triboelectrically charged | t in air with a relative humidity of 5–13% and a temperature of 30–30 C. In this case, sylvin and kizerite are positively charged, and rock salt is positive.
    Next to the conditioned and triboz1 electrically charged crude potassium salt, an auxiliary cup is mixed; by the fall. It is advisable to mix the cTEJo conditioner into the raw potash soils in the transport device, with the help of which the potash salt is fed to the electrostatic separator with a free fall.
    As an auxiliary conditioning agent, lactic acid or a mixture of fatty acids is used.
    with a chain length of 6-14 atoms
    lot
    carbon. When salt is transported to the separator, a partial recharge of kieserite occurs, the volume of which is cut by the amount of auxiliary conditioning agent. By reducing the amount of auxiliary conditioning agent, the content in the concentrate increases.
    at the same time, the content of kieserite reduces “TC, and vice versa. Thus, concentrates with a specific MgO content from 7 to 11% and a specific KjO content from 23 to 33% are collected at the base of the free-fall electrostatic separator.
    In addition to that, the composition of the obtained concentrates remains practically
    :
    when the relative humidity fluctuates.
    According to the proposed method, it is possible to obtain a concentrate with a certain average MgO content at the same time with a high content in a controlled large-scale technical process after grinding, conditioning and triboelectric charge, using raw potassium salts containing cyerite.
    Example. Raw potassium gol, containing the following components,%: 12.6; sylvin 19.9; kyserite 20.9; amena salt 58.8; anhydrite 0.4, grind to a grain size of 1.25 mm, and mixed with 40 g of salicylic acid per 1 ton of crude potassium salt in a mixer and triboelectrically charged with heating. Next, the charged raw alium salt in the feed screw in front of the electrostatic free-fall separator is mixed with an auxiliary conditioning agent, a ferric acid, in an amount of 40 g / t of potassium salt.
    The results of the separation are given in Table 1.
    By conditioning 40 grams of salicylic acid and 20 grams of fatty acid to 1 ton of crude potassium salt, the following separation results are obtained, as shown in Table 2.
    By conditioning 40 grams of sali-, cyclic acid and 60 grams of fatty acid per 1 ton of crude potassium salt, the following separation results are obtained, as shown in Table 3.
    The proposed method achieves a high yield of K / jO of 92.5-94.2% and the process times); the process proceeds under conditions in which the fluctuations in relative humidity are insignificant. her influence on his move.
    Table 4 summarizes the results of two comparative experiments carried out on the proposed and known methods, while the temperature, humidity, composition of the initial salt and the number of conditioning agents in both experiments are the same.
    According to a known method, it is impossible to establish the desired detectable amount of MgO. According to the proposed method, separate air-conditioning of the conditioner, the blending agent and after that the additional conditioning agent.
    f. op mula invention
    A method of electrostatic processing of raw potassium salt containing kieserite to produce a mixture of sylvite and kieserite, including conditioning the raw material with salicylic acid, taken in an amount of 30-60 g / ton of raw salt, and a fatty acid or mixture of fatty acids with carbon atoms 6- 34 in the amount of 20–60 g / t, mp for the electric charge of the conditioned salt at 30–56 ° C and a relative humidity of 5–13% and the subsequent electrostatic separation of the salt into the desired product and residue, o t h and h o and with the fact that, in order to get audio the desired product with a predetermined ratio MgOiK O, conditioning the potassium salt of a fatty acid or mixture of fatty acids is carried out after the triboelectric charging.
    Table 1
    Table3
    19.2 92.7 41.4 7.0 1: 0.22
    17.093.3 49.1 7.0 1: 0.26
    16.193.1 53.3 8.3 1: 0.28
    Known 40 g / ton salicylic acid + 20 g / ton fatty acid 42 7.5 27.4 16.8 1.4 24.0 93.7
    Prfdla- 42
    7.5 24.3 34.3 1.4 8.1 94.2
    Table
    34.65 80.2
    权利要求:
    Claims (1)
    [1]
    SUMMARY OF THE INVENTION A method for electrostatically treating a raw potassium salt containing kieserite to obtain a mixture of sylvin and kizerite, comprising conditioning the feedstock with salicylic acid, taken in an amount of 30-60 g / t crude salt, and a fatty acid or a mixture of fatty acids with 1 carbon atom number 6 -14 in an amount of 20-60 g / t, triboelectric charge of conditioned salt at 30-56 ° С and relative air humidity of 5-13Z and the subsequent electrostatic separation of salt into the target product and residue, which is due to the fact that , in order to obtain the target product with a given ratio of MgO: K 2 O, the conditioning of the potassium salt with a fatty acid or a mixture of fatty acids is carried out after triboelectric charging.
    Table 1
    Separation conditions ———————————Concentrate, Z The balance,% Yield in concentrate, ° C Rel wet ,, to 2 o Kizerite to 2 o Kizerite . to 2 o Kizerite MgO K 2 O: MgO 50,5 5 30,2 27.8 1,5 16.6 92.5 51.3 8.1 1: 0.27 42 7.5 29.5 29.2 1,5 15,5 92.7 55.3 8.5 1: 0.29 37 . 10 28.9 30.1 1,6 14.7 92.6 58.1 8.8 1: 0.30
    Table 2
    Separation conditions Concentrate, Z The remainder, Z Concentrate, Z ° C | Rel wet., K 2 0 | Kizerite K 2 0 | Kizerite K ^ O | Kizerite | MgO | K ^ OHlgO
    50,5 5 24.5 32.9 1,5 9.7 93.8 75.9 9.6 42. 7.5 24.3 34.3 1.4 8.1 94.2 80.2 10.0 35 12.5 32.1 * 35.7 1.8 5,6 93.1 86.7 10,4
    Table 3
    Separation conditions Concentrate, Z The remainder, Z Concentrate, Z ° C Rel wet.,about /about to 2 o Kizerite to 2 o Kizerite to 2 o Kizerite MgO K 2 O: MgO 56 5 32,4 24.0 1.4 19.2 92.7 41,4 7.0 1: 0.22 48 7.5 31,4 27.4 1.3 17.0 93.3 49.1 7.0 1: 0.26
    93.1
    1: 0.28
    28,4
    1.4
    16, 1
    53.3
    8.3
    29.9
    12.5
    5 1433406 6 Table4 Processing method Separation conditions Concentrate,% The balance,% Exit to concentrate,% ° C I Rel. wet.% Kj 0 | Kizerite K ^ Oh Kizeri!to 2 o Kizerite Famous 40 g / t salicylic acid + 20 g / t oily acid * 42 7.5 27.4 16.8 1.4 24.093.7 34.65 Prbdlagafmy1 42 7.5 24.3 34.3 1.4 8.194.2 80.2
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1433406A3|1988-10-23|Method of electrostatic treatment of raw potassium salt
    US4297207A|1981-10-27|Process and apparatus for the electrostatic dressing of carnallite-containing crude potassium salts
    US3941685A|1976-03-02|Process for electrostatic separation of pyrite from crude coal
    CA2138094C|1998-08-18|Method for processing kieserite concentrates containing langbeinite and anhydrite
    SU1329613A3|1987-08-07|Method of isolating potassium chloride from sylvinite concentrate
    US2722472A|1955-11-01|Process for producing phosphate materials
    DE3146295C1|1983-04-07|Method of electrostatically separating ground potash ores
    US3480139A|1969-11-25|Recovery of kieserite from crude mineral salts
    CA1333271C|1994-11-29|Procedure for the electrostatic processing of crude argillaceous salts
    US7635822B2|2009-12-22|Method for treating ground crude potassium salts that contain kieserite
    US3760941A|1973-09-25|Process for preparing highly free flowing rock or table salt
    US2805768A|1957-09-10|Method for beneficiating potash materials
    US3591093A|1971-07-06|Electrostatic upgrading of potash ores
    CA2019960C|1996-09-10|Process for treating mineral mixtures
    SU1153822A3|1985-04-30|Method of enriching natural carnallite
    WO1991003167A1|1991-03-21|Process for producing a mineral animal feed supplement
    US3383057A|1968-05-14|Controlled reagent introduction in a magnesite ore concentration process
    DE1301705B|1969-08-21|Mineral feed mix and process for their production
    DE2205028B2|1977-12-08|PROCESS FOR PRODUCING A PNEUMATICALLY DELIVERABLE ANHYDRITE
    US9227849B2|2016-01-05|Systems and methods for processing sylvinite and carnallite ores
    CA2086793C|2002-10-29|Sodium salicylate as a conditioning agent in the electrostatic processing of carnallite-containing crude potash salts
    CA2086790C|2002-10-29|A method for electrostatically processing crude salts at high levels of ambient humidity
    DE3825434C1|1989-11-02|Obtaining useful substances from crude kieseritic potassium salt - comprises grinding, adding conditioning agent, charging salt triboelectrically, sepg. salt electrostatically etc.
    RU2002513C1|1993-11-15|Method for dry concentration of wollastonite ores
    US3885673A|1975-05-27|Electrostatic separation of potash ores
    同族专利:
    公开号 | 公开日
    FR2572310B1|1990-07-06|
    ES8605397A1|1986-03-16|
    GB2166067B|1987-10-28|
    ES548161A0|1986-03-16|
    GB2166067A|1986-04-30|
    GB8525530D0|1985-11-20|
    US4767506A|1988-08-30|
    DD239731A5|1986-10-08|
    CA1250251A|1989-02-21|
    FR2572310A1|1986-05-02|
    DE3439042A1|1986-04-30|
    DE3439042C2|1988-07-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1056551B|1957-01-25|1959-05-06|Kali Forschungsanstalt Gmbh|Process for the electrostatic processing of potash salts|
    DE1953534C3|1969-10-24|1974-03-14|Kali Und Salz Ag, 3500 Kassel|Process for the electrostatic treatment of crude potash salts containing Kiesent|
    US3802556A|1970-03-26|1974-04-09|Wintershall Ag|Process for electrostatic dressing and/or working up of salt and mineral mixtures|
    US3760941A|1971-05-04|1973-09-25|Kali & Salz Ag|Process for preparing highly free flowing rock or table salt|
    DE3146295C1|1981-11-23|1983-04-07|Kali Und Salz Ag, 3500 Kassel|Method of electrostatically separating ground potash ores|
    DE3216735C1|1982-05-05|1983-08-25|Kali Und Salz Ag, 3500 Kassel|Process for the production of potash fertiliser salt with a K2O content of at least 60 % by weight, by multistage electrostatic separation|
    DE3227814C1|1982-07-26|1983-11-17|Kali Und Salz Ag, 3500 Kassel|Inlet funnel made of electrically insulating material for electrostatic free-fall separators|
    DE3247064C1|1982-12-20|1983-11-24|Kali Und Salz Ag, 3500 Kassel|Device for feeding finely divided material into electrostatic free-fall separators|DE4343625C1|1993-12-21|1995-06-22|Kali & Salz Beteiligungs Ag|Pure kieserite recovery economically from preconcentrate|
    US6074458A|1997-02-24|2000-06-13|Separation Technologies, Inc.|Method and apparatus for separation of unburned carbon from flyash|
    US5967331A|1997-10-27|1999-10-19|Katyshev; Anatoly L.|Method and apparatus for free fall electrostatic separation using triboelectric and corona charging|
    DE102006036467B4|2006-08-04|2008-09-18|K + S Aktiengesellschaft|Process for the treatment of kieserite-containing ground potash salts|
    US8552326B2|2010-09-03|2013-10-08|Separation Technologies Llc|Electrostatic separation control system|
    EP2875869A1|2013-11-20|2015-05-27|K+S Aktiengesellschaft|Method for processing lithium salts from raw salts|
    US9393573B2|2014-04-24|2016-07-19|Separation Technologies Llc|Continuous belt for belt-type separator devices|
    US9764332B2|2015-02-13|2017-09-19|Separation Technologies Llc|Edge air nozzles for belt-type separator devices|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19843439042|DE3439042C2|1984-10-25|1984-10-25|
    [返回顶部]