• 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:
    The invention relates to a process for preparing granulated potassium sulphate or potassium magnesium sulphate, characterized by comprising the following steps: (a) grinding the potassium sulphate or potassium magnesium sulphate (b) mixing the ground product of step (a) with a corresponding unground sulphate until a predetermined particle size distribution curve is obtained (c) treating the mixture of step (b) with a hot, saturated solution of a corresponding sulphate until a wet paste is obtained, and the final further steps of granulating said paste and drying the granulate thus obtained. The invention also relates to the products obtained in this manner.
    公开号:SU1443795A3
    申请号:SU853868101
    申请日:1985-03-25
    公开日:1988-12-07
    发明作者:Вителларо Антонио；Санфилиппо Джованни
    申请人:Италкали Сочиета Италиана Сали Алкалини С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    4 4iik
    CO M CO O1

    s / 1
    The invention relates to methods for producing granulated potassium sulphate used as a fertilizer.
    The purpose of the invention is to eliminate the use of a binding additive.
    The drawing shows the implementation of the proposed method.
    PRI me R. From 10 t / h of potassium sulphate coming from storage 1 and having the following granulometric composition (mesh), wt,%;
    Less than 35
    35-48
    48-100
    100-150
    150-200200-270
    More than 270
    2.33
    0.33 19.00 28.00 26.33 14.33
    9.68
    6 t / h are fed to the container 2 for moistening, and 4 t / h to the grinder 3 The crushed product in the tank 2 is mixed with the unmilled starting product.
    The moistened product leaving the container 2 and having the following particle size distribution (mesh), wt.%:
    Less than 150 8
    150-200 12
    200-270 15
    270-400 15
    More than 400 50 are molded in granulators 4 and 5 to obtain granules of the following granulometric composition (mesh), wt.% 1
    Less than 35 1.16
    35-48 0.16
    48-100 9.5
    100-150 18.0
    150-200 19.17
    200-270 14.67
    270-400 12.34
    More than 400 25.00
    The granules are dried in a fluid bed dryer 6, and then sieved in a vibrating screen 7 to produce Go-to-YOU products with a particle size of 2-5 mm and a fine fraction, part of which is sent to tank 8 to prepare potassium sulfate solution or potassium sulphate is a magnet used to wet the starting product. Another part of the fine fraction is fed to the grinder 3.
    Q
    five
    0
    five
    0
    five
    0

     The fraction with a particle size of more than 5 mm is sent to the crusher 9, and then to the dryer 6.
    The finished product has the following characteristics: packing resistance: 100 g / cm; hardness: 630 g / granule, 10 mesh in size; resistance of 3–15% passing at 1 mm.
    The proposed method eliminates the use of bonded additives.
    权利要求:
    Claims (2)
    [1]
    1. A method of producing granulated potassium sulfate, which includes grinding the raw material, moistening it, forming the granules, drying them, classifying the dried granules, recycling the non-conforming product to the process, characterized in that, in order to eliminate the use of binding additives, the raw materials grinding to obtain a product having the following particle size distribution, wt.%:
    Less than 150 mesh 8
    150-200 mesh 12
    200-270 mesh 15
    270-400 mesh 15
    Over 400 mesh 50
    after which the crushed product in a mass ratio of 1: t is mixed with the unmilled raw material, the resulting mixture is moistened with a solution of potassium sulfate and the wetted mass is molded before drying to obtain granules having the following particle size distribution, wt%:
    Less than 35 mesh 1.16
    35-48 mesh, 16
    48-100 mesh 9.5
    100-t50 mesh 18
    150-200 mesh 19, 17
    200-270 Mesh 14.67
    270-400 mesh 12.34
    More than 400 mesh 25,
    [2]
    2. Method 1, characterized in that; After classification, the coarse fraction of the substandard product is recycled to the grinding stage, and the fine fraction to the preparation stage of potassium sulfate or potassium magnesium sulfate solution to moisten the granulated product.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1443795A3|1988-12-07|Method of producing granulated potassium sulfate
    US4163674A|1979-08-07|Process for making a synthetic liquid absorbent and products resulting therefrom
    DE663410C|1938-08-05|Process and device for graining fertilizers or other substances or mixtures of substances
    US4919722A|1990-04-24|Method of manufacturing a granular building material from refuse
    US4015973A|1977-04-05|Limestone-expanding clay granules and method of making them
    US3214261A|1965-10-26|Granular soil neutralizer and the process of preparing said product
    US5108728A|1992-04-28|Process for the production of granulated dicalcium phosphate dihydrate
    US3926609A|1975-12-16|Granular mgo-containing potassium salt fertilizers and process for their manufacture
    US2041088A|1936-05-19|Method of making granulated materials
    US6379414B1|2002-04-30|Process for producing pressed fertilizer granulates
    US3469938A|1969-09-30|Production of hydrated sodium tripolyphosphate
    US2623243A|1952-12-30|Method of agglomeration
    DE2201484C3|1980-12-11|Peat particles from sphagnum peat
    JPS5521581A|1980-02-15|Method of manufacturing material for sintered mineral
    EP0488199B1|1995-01-18|Process for granulating potassium salts
    RU2671084C1|2018-10-29|Method for post-processing combined fertilizer granulate
    US3427145A|1969-02-11|Method of agglomerating potassium chloride using hydrofluoric acid or metallic fluoride
    DE4018637A1|1991-01-17|Prodn. of non-dusting alkaline earth fertiliser granules - by granulation of powdered alkaline earth mixture with magnesium salt soln. and/or sulphate waste liquor
    DE913534C|1954-06-14|Process for the production of durable moldings from alkaline earth hydroxides or oxides or compositions containing them
    RU2053973C1|1996-02-10|Ground-cement pieces production method
    SU990756A1|1983-01-23|Process for producing granulated potassium fertilizer
    RU2631035C2|2017-09-15|Method for producing granulated superphosphate
    US78327A|1868-05-26|Improvement in the manufacture of artificial stone
    SU1303596A1|1987-04-15|Method for producing granulated potassium chloride
    SU952830A1|1982-08-23|Method for producing granulated potassium chloride
    同族专利:
    公开号 | 公开日
    JPS6114123A|1986-01-22|
    FR2565960B1|1987-02-27|
    ES8603161A1|1985-12-01|
    DE3506162A1|1985-12-19|
    AU3910485A|1986-01-02|
    IT8421488D0|1984-06-19|
    FR2565960A1|1985-12-20|
    IT1174208B|1987-07-01|
    DE3506162C2|1989-08-24|
    UA6033A1|1994-12-29|
    US4668242A|1987-05-26|
    AU576823B2|1988-09-08|
    ES541005A0|1985-12-01|
    CA1247328A|1988-12-28|
    JPH0240001B2|1990-09-10|
    BE901871A|1985-07-01|
    DD237502A5|1986-07-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2979421A|1958-01-27|1961-04-11|Fluor Corp|Urea granulation process|
    FR1275463A|1960-09-28|1961-11-10|Potasse & Engrais Chimiques|Improvements in granulation and drying of fluid products|
    US3440033A|1964-06-25|1969-04-22|Int Minerals & Chem Corp|Method for producing granular product|
    US3501282A|1966-09-09|1970-03-17|Shell Oil Co|Preparation of pelletized potassium chloride-ur a-sulfur fertilizer|
    US3620709A|1969-04-29|1971-11-16|Int Minerals & Chem Corp|Granulation of potassium sulphate|
    DE2106212B2|1971-02-10|1972-05-25|Kali Und Salz Ag, 3500 Kassel|Granulates prodn - from finely divided potassium sulphate magnesium sulphate hydrates|
    US3853490A|1973-01-22|1974-12-10|Int Minerals & Chem Corp|Granulation of potassium sulfate|
    US3923489A|1973-05-23|1975-12-02|Ralph W Richardson|Pelletized fertilizer|
    US3979198A|1973-10-29|1976-09-07|Agritec, Co.|Polyurethane plant growth medium|
    AU486139B2|1975-11-17|1976-01-15|Thomas, G.|Production of magnesium ammonium phosphate|
    US4081266A|1975-12-22|1978-03-28|Agrico Chemical Company|Stable fluid suspension fertilizer composition and method for producing same|
    CA1106154A|1976-12-02|1981-08-04|William B. Dancy|Granulation of potash salts|
    US4385920A|1976-12-02|1983-05-31|International Minerals & Chemical Corp.|Granulation of potash salts|
    US4183738A|1977-05-09|1980-01-15|International Fertilizer Development Center|Granulation process and products produced thereby|
    DE2966435D1|1978-12-22|1983-12-29|Adelaide & Wallaroo Fertilizer|Improvements in and relating to granulation|US5017398A|1987-04-10|1991-05-21|The Procter & Gamble Company|Improved margarine compositions/containing solid sucrose polyesters|
    US4797300A|1987-04-10|1989-01-10|The Procter & Gamble Company|Compositions containing novel solid, nondigestible, fat-like compounds|
    US6077556A|1989-04-10|2000-06-20|The Procter & Gamble Company|Solid, nondigestible, fat-like compounds|
    US6299663B1|1996-04-19|2001-10-09|Airborne Industrial Minerals Inc.|Granulation method and apparatus therefor|
    US6454979B1|1998-04-17|2002-09-24|Airborne Industrial Minerals Inc.|Wet granulation method for generating granules|
    US6132484A|1998-04-17|2000-10-17|Airborne Industrial Minerals Inc.|Wet granulation method for generating fertilizer granules|
    US6293985B1|1998-04-17|2001-09-25|Airborne Industrial Minerals|Fertilizer granulation method|
    US6331193B1|1998-04-17|2001-12-18|Airborne Industrial Minerals Inc.|Wet granulation method generating sulfur granules|
    US6692716B1|1998-10-13|2004-02-17|Airborne Industrial Minerals, Inc.|Method of formulating alkali earth salts|
    US6106796A|1998-10-13|2000-08-22|Airborne Technologies Inc.|Method of ammonium sulfate purification|
    US6582637B1|1999-05-05|2003-06-24|Agronomic Growth Industries Ltd.|Compost granulation method|
    US6334990B1|1999-10-21|2002-01-01|Airborne Industrial Minerals Inc.|Formulation of potassium sulfate, sodium carbonate and sodium bicarbonate from potash brine|
    US6375824B1|2001-01-16|2002-04-23|Airborne Industrial Minerals Inc.|Process for producing potassium hydroxide and potassium sulfate from sodium sulfate|
    JP4566620B2|2004-05-14|2010-10-20|花王株式会社|Granulated material|
    US20070280981A1|2006-06-02|2007-12-06|The Andersons, Inc.|Adherent biologically active ingredient carrier granule|
    CN100542957C|2007-10-18|2009-09-23|南风化工集团股份有限公司|A kind of prilling process of anhydrous sodium sulphate|
    CN107365180A|2017-05-25|2017-11-21|滕国清|Manufacture the production method of potassium magnesium sulfate particle and the purposes of potassium magnesium sulfate particle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT21488/84A|IT1174208B|1984-06-19|1984-06-19|PROCEDURE FOR THE PRODUCTION OF POTASSIC SULPHATE AND MAGNESIA POTASSIC SULPHATES GRANULATED, AND GRANULATED SO PRODUCED|
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