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    • 1. 发明申请
    • METHOD FOR THE REDUCTION OF HALITE IN THE PREPARATION OF POTASSIUM SULPHATE FROM POTASSIUM-CONTAINING ORES AT HIGH AMBIENT TEMPERATURES
    • 高温环境下从含钾矿石制备硫酸钾中还原卤化物的方法
    • WO2017220709A1
    • 2017-12-28
    • PCT/EP2017/065353
    • 2017-06-22
    • YARA DALLOL BV
    • CHASTAIN, Richard W.BUCKHURST, Ingrid T.LEFAIVRE, AntoineNEUMAN, Thomas H.
    • C01D5/12C01D5/06C01D3/04C01D5/16C01D5/10C01D3/08C05D1/02
    • C01D5/12C01D3/04C01D3/06C01D3/08C01D5/06C01D5/10C01D5/16C05D1/02C05D5/00C05D9/02
    • There are provided methods for the production of potassium sulphate. The methods comprise contacting an aqueous potassium- and sulphate-containing composition with magnesium chloride (MgCI 2 ), thereby obtaining a composition comprising kainite; optionally concentrating the kainite from the composition and reducing or removing halite therefrom; reacting the kainite with magnesium sulphate (MgSO 4 ) and potassium sulphate (K 2 SO 4 ) so as to convert the kainite into leonite (K 2 SO 4 . MgSO 4 .4H 2 O); optionally contacting the leonite with water to remove excess MgSO 4 ; and contacting the leonite with water so as to leach the MgSO 4 , contained in the leonite, and to at least substantially selectively precipitate potassium sulphate (K 2 SO 4 ), further involving a process brine sulphate control step, based on bloedite precipitation, to control the overall level of sulphate in the method and further comprising a step for the substantially complete reduction or removal of halite from the flotation concentrate, accompanied by an additional precipitation of kainite, thus also increasing the overall recovery of kainite in the process. The method according to the invention can be operated at higher temperatures, in particular at temperatures above 35 °C and does not require a cooling step at 20 to 25 °C. The method produces potassium sulphate with a low amount of chloride.
    • 提供了生产硫酸钾的方法。 所述方法包括使含钾和硫酸盐的含水组合物与氯化镁(MgCl 2)接触,由此获得包含红土矿的组合物; 任选地从组合物中浓缩红松岩并从中减少或除去红土; 使红细纹岩与硫酸镁(MgSO 4)和硫酸钾(K 2 SO 4)反应,从而将红细纹岩转化为红土(K SO 4 SO 4,SO 4 SO 4,SO 4 SO 4,SO 4 SO 4,SO 4 SO 4,SO 4 SO 4, 任选地使该leonite与水接触以除去过量的MgSO 4; 和将该钙质矿物与水接触以浸出该钙质矿中含有的MgSO 4并至少基本选择性地沉淀硫酸钾(K 2 SO 4) ),进一步包括基于黄磷灰石沉淀的工艺盐水硫酸盐控制步骤以控制该方法中硫酸盐的总体水平,并且还包括用于从浮选精矿中基本上完全还原或除去卤酸盐的步骤 通过另外的海ite岩的沉淀,因此也增加了该过程中的海ite岩的总体回收率。 根据本发明的方法可以在更高的温度下操作,特别是在35℃以上的温度下操作并且不需要在20至25℃下的冷却步骤。 该方法生产含少量氯化物的硫酸钾。
    • 2. 发明申请
    • VERFAHREN ZUR SELEKTIVEN FLOTATION VON KAINIT AUS MINERALGEMISCHEN UNTER VERWENDUNG VON SULFATIERTEN FETTSÄUREN ALS SAMMLERREAGENZ
    • 工艺矿物kainit混合物的选择性浮选使用硫酸脂肪比SAMMLERREAGENZ
    • WO2016086910A1
    • 2016-06-09
    • PCT/DE2015/000567
    • 2015-12-01
    • K+S AKTIENGESELLSCHAFT
    • WACHSMUTH, UweBROD, Jochen
    • C01D5/00B03D1/012
    • B03D1/012B03D1/02B03D2201/02B03D2201/04B03D2203/10C01D5/12C01D5/16
    • Die Erfindung betrifft ein Verfahren zur selektiven Flotation von Kainit aus gemahlenen Kalirohsalzen oder z.B. aus durch Eindampfverfahren gewonnene kristallisierte Salzgemische, die außer Kainit weitere Minerale wie z.B. Halit, Sylvin und andere Salzminerale enthalten können, zur Herstellung einer Kainit-Konzentratfraktion und einer Rückstandsfraktion. Das Trennverfahren ist dadurch gekennzeichnet, dass das aufgemahlene oder das kristallisierte Salzgemisch als Kristallisatsuspension mit einer Konditionierungsmittelkombination bestehend aus einer sulfatierten Fettsäure oder deren Alkalisalz als Sammlerreagenz und einem für die Flotation bekannten Schäumer (z.B. Glycolether, einwertige aliphatische Alkohole, Terpenalkohole, Polyglykolether, etc.) intensiv vermischt wird und anschließend durch Rührwerks- oder pneumatische Flotation in eine Kainitkonzentratfraktion und eine Rückstandsfraktion getrennt wird. Die entstandenen Fraktionen können in nachgeschalteten Prozessen weiter aufbereitet werden. Dieses Verfahren ermöglicht eine großtechnische Aufbereitung zur selektiven Gewinnung von Kainit aus Mineralgemischen mit Hilfe des Flotationsverfahrens.
    • 本发明涉及一种用于地面卡因酸的选择性浮选粗钾盐,或例如 由结晶盐混合物,其蒸发过程中获得,除了Kainit其他矿物,如例如 可以含有岩盐,钾盐等矿物质盐,其用于制备钾盐镁矾浓缩馏分和残余馏分。 分离过程的特征在于,经研磨的,或结晶盐的混合物作为结晶悬浮液与调理剂组合,包括硫酸化的脂肪酸或其碱金属盐作为Sammlerreagenz和的一个已知的用于浮选起泡剂(例如乙二醇醚,一元脂族醇,萜烯醇,聚乙二醇醚,等等) 是充分混合,并随后通过搅拌器或气动浮选在Kainitkonzentratfraktion和残余馏分分离。 发生馏分能够下游工艺进行进一步处理。 该方法使得能够对卡因酸矿物质混合物与浮选过程的助剂选择性提取一个大规模制备。
    • 3. 发明申请
    • CHEMICAL PROCESS TO PRODUCE HYDROGEN CHLORIDE AND CHLORIDE-FREE COMPOUND POTASSIUM SULFATE FERTILIZERS OR OTHER METAL SULFATES
    • 生产氯化氯和无氯化合物硫酸钾肥料或其他金属硫酸盐的化学工艺
    • WO2009013728A8
    • 2009-06-18
    • PCT/IL2008000813
    • 2008-06-15
    • F P C ENTPR 2008 LTDFINKELSHTEIN LEONID
    • FINKELSHTEIN LEONID
    • C01B17/96C01B7/03C01C1/24C01D5/02C01D5/12C01F11/46
    • C01B17/96C01B7/035C01C1/24C01D5/02C01D5/12C01F5/40
    • A method is disclosed for production of a sulfate-containing salt and anhydrous gaseous HCl from a metal chloride (MClx) and oleum. MClx and oleum are mixed together with a water-containing liquid, forming gaseous HCl and a solution of a sulfate-containing salt or double salt. The salt is precipitated from the solution, and in a preferred embodiment, the supernatant liquid from the precipitation is recycled to the reaction mixture as the water-containing liquid in subsequent reaction cycles. In a preferred embodiment, HCl discharged from the reaction mixture is scrubbed to remove dust, water vapor and traces of H2SO4, yielding anhydrous HCl of >90% purity. The exothermicity of the reaction between the water-containing liquid and the oleum is sufficient that, unlike methods known in the prior art, the process proceeds quickly and efficiently without any necessity for additional heating of the reaction mixture. This method provides high-purity, low-chlorine sulfates, including the novel potassium sulfate double salts K3(NH4)(SO4)2, 3K2SO4*MgSO4 and 3K2SO4*CanMg2-nSO4.
    • 公开了从金属氯化物(MClx)和发烟硫酸生产含硫酸盐的盐和无水气态HCl的方法。 MClx和发烟硫酸与含水液体混合,形成气态HCl和含硫酸盐的盐或双盐的溶液。 盐从溶液中沉淀出来,在优选的实施方案中,沉淀的上清液在随后的反应循环中作为含水液体再循环到反应混合物中。 在优选的实施方案中,从反应混合物中排出的HCl被洗涤以除去灰尘,水蒸汽和痕量的H 2 SO 4,产生> 90%纯度的无水HCl。 含水液体和发烟硫酸之间的反应的放热足够,与现有技术中已知的方法不同,该方法快速有效地进行,而不需要额外加热反应混合物。 该方法提供了高纯度的低氯硫酸盐,包括新型的硫酸钾复盐K3(NH4)(SO4)2,3K2SO4 * MgSO4和3K2SO4 * CanMg2-nSO4。
    • 4. 发明申请
    • CHEMICAL PROCESS TO PRODUCE HYDROGEN CHLORIDE AND CHLORIDE-FREE COMPOUND POTASSIUM SULFATE FERTILIZERS OR OTHER METAL SULFATES
    • 生产氯化氢和无氯化合物硫酸钾肥料或其他金属硫酸盐的化学方法
    • WO2009013728A4
    • 2009-03-26
    • PCT/IL2008000813
    • 2008-06-15
    • F P C ENTPR 2008 LTDFINKELSHTEIN LEONID
    • FINKELSHTEIN LEONID
    • C01B17/96C01B7/03C01C1/24C01D5/02C01D5/12C01F11/46
    • C01B17/96C01B7/035C01C1/24C01D5/02C01D5/12C01F5/40
    • A method is disclosed for production of a sulfate-containing salt and anhydrous gaseous HCl from a metal chloride (MClx) and oleum. MClx and oleum are mixed together with a water-containing liquid, forming gaseous HCl and a solution of a sulfate-containing salt or double salt. The salt is precipitated from the solution, and in a preferred embodiment, the supernatant liquid from the precipitation is recycled to the reaction mixture as the water-containing liquid in subsequent reaction cycles. In a preferred embodiment, HCl discharged from the reaction mixture is scrubbed to remove dust, water vapor and traces of H2SO4, yielding anhydrous HCl of >90% purity. The exothermicity of the reaction between the water-containing liquid and the oleum is sufficient that, unlike methods known in the prior art, the process proceeds quickly and efficiently without any necessity for additional heating of the reaction mixture. This method provides high-purity, low-chlorine sulfates, including the novel potassium sulfate double salts K3(NH4)(SO4)2, 3K2SO4*MgSO4 and 3K2SO4*CanMg2-nSO4.
    • 公开了一种从金属氯化物(MClx)和发烟硫酸生产含硫酸盐和无水气态HCl的方法。 将MClx和发烟硫酸与含水液体混合在一起,形成气态HCl和含硫酸盐或复盐的溶液。 盐从溶液中沉淀出来,并且在一个优选的实施方案中,来自沉淀的上清液在随后的反应循环中作为含水液体循环到反应混合物中。 在一个优选实施方案中,从反应混合物排出的HCl被洗涤以除去灰尘,水蒸气和痕量的H 2 SO 4,产生纯度> 90%的无水HCl。 含水液体与发烟硫酸之间反应的放热性足以使得与现有技术中已知的方法不同,该方法快速有效地进行而无需额外加热反应混合物。 该方法提供了高纯度,低氯硫酸盐,包括新型硫酸钾复盐K3(NH4)(SO4)2,3K2SO4 * MgSO4和3K2SO4 * CanMg2-nSO4。
    • 5. 发明申请
    • CHEMICAL PROCESS TO PRODUCE HYDROGEN CHLORIDE AND CHLORIDE-FREE COMPOUND POTASSIUM SULFATE FERTILIZERS OR OTHER METAL SULFATES
    • 生产氯化氢和无氯化合物硫酸钾肥料或其他金属硫酸盐的化学方法
    • WO2009013728A1
    • 2009-01-29
    • PCT/IL2008/000813
    • 2008-06-15
    • F.P.C. ENTERPRISE (2008) LTDFINKELSHTEIN, Leonid
    • FINKELSHTEIN, Leonid
    • C01B17/96C01B7/03C01C1/24C01D5/02C01D5/12C01F11/46
    • C01B17/96C01B7/035C01C1/24C01D5/02C01D5/12C01F5/40
    • A method is disclosed for production of a sulfate-containing salt and anhydrous gaseous HCl from a metal chloride (MCl x ) and oleum. MCl x and oleum are mixed together with a water-containing liquid, forming gaseous HCl and a solution of a sulfate-containing salt or double salt. The salt is precipitated from the solution, and in a preferred embodiment, the supernatant liquid from the precipitation is recycled to the reaction mixture as the water-containing liquid in subsequent reaction cycles. In a preferred embodiment, HCl discharged from the reaction mixture is scrubbed to remove dust, water vapor and traces of H 2 SO 4 , yielding anhydrous HCl of >90% purity. The exothermicity of the reaction between the water-containing liquid and the oleum is sufficient that, unlike methods known in the prior art, the process proceeds quickly and efficiently without any necessity for additional heating of the reaction mixture. This method provides high-purity, low-chlorine sulfates, including the novel potassium sulfate double salts K 3 (NH 4 )(SO 4 ) 2 , 3K 2 SO 4* MgSO 4 and 3K 2 SO 4* Ca n Mg 2-n SO 4 .
    • 公开了一种从金属氯化物(MCl x和发烟硫酸)生产含硫酸盐和无水气态HCl的方法。 将MCl x和发烟硫酸与含水液体混合在一起,形成气态HCl和含硫酸盐或复盐的溶液。 盐从溶液中沉淀出来,并且在一个优选的实施方案中,来自沉淀的上清液在随后的反应循环中作为含水液体循环到反应混合物中。 在一个优选的实施方案中,从反应混合物排出的HCl被洗涤以除去灰尘,水蒸气和微量H 2 SO 4,得到纯度> 90%的无水HCl 。 含水液体与发烟硫酸之间反应的放热性足以使得与现有技术中已知的方法不同,该方法快速有效地进行而无需额外加热反应混合物。 该方法提供了高纯度的低氯硫酸盐,包括新型硫酸钾复盐K(下标4)(SO4) 2K,3K,2K,4K,4K,4K和3KK 2 SO 2 2 2 > 4 * 的Ca <子>名词镁<子> 2-正 SO <子> 4