公开(公告)号：US4562058A

公开(公告)日：1985-12-31

申请号：US715708

申请日：1985-03-25

申请人： William B. Dancy ,  Hsi Meng

发明人： William B. Dancy ,  Hsi Meng

IPC分类号： C01D5/10 ,  C01D15/06 ,  C01F5/38

CPC分类号： C01D5/10

摘要： An improved process for the production of potassium sulfate crystals by the reaction of saturated solution of potassium chloride with langbeinite in the solid phase at a temperature of from 45.degree.-55.degree. C., thereby forming potassium sulfate crystals and magnesium chloride solution comprising the step of conducting the reaction in the presence of a growth enhancer comprising monosulfonated or monosulfated surfactant and a neutralized disulfonated surfactant in a weight ratio of from about 0.14 to 0.69.

摘要翻译： 通过在45℃-55℃的温度下，将固体相中的氯化钾饱和溶液与朗氏沸石反应生成硫酸钾晶体的改进方法，从而形成硫酸钾晶体和包含步骤 在包含单磺化或单硫酸化表面活性剂和中和的二磺酸盐表面活性剂的生长增强剂存在下进行反应，重量比为约0.14至0.69。

公开(公告)号：US4438083A

公开(公告)日：1984-03-20

申请号：US418547

申请日：1982-09-15

申请人： Michael H. Willems ,  Winfried J. W. Vermijs

发明人： Michael H. Willems ,  Winfried J. W. Vermijs

IPC分类号： C01C1/18 ,  C01F5/38 ,  C05C1/02 ,  C01F11/14

CPC分类号： C01C1/18 ,  C01C1/185 ,  C01F5/38 ,  C05C1/02 ,  C01P2006/12

摘要： Process for preparing magnesium nitrate hexahydrate without the need for filtering aids. A process for preparing magnesium nitrate hexahydrate essentially comprises: (a) forming a magnesium oxide or magnesium carbonate suspension in melted magnesium nitrate hexahydrate at a suspension temperature in excess of 90.degree. C.; (b) adding a nitric acid solution to the suspension while stirring thereby forming a reaction mixture containing additional magnesium nitrate hexahydrate; (c) filtering the liquid reaction mixture to obtain a clear magnesium nitrate hexahydrate filtrate; (d) discharging as product a part, corresponding to the amount of magnesium oxide or magnesium carbonate introduced, of the liquid magnesium nitrate hexahydrate obtained as clear filtrate; (e) utilizing the remaining part as liquid medium for the conversion of magnesium oxide or magnesium carbonate with nitric acid. Thermally stabilized ammonium nitrate containing granules may also be prepared containing magnesium nitrate hexahydrate according to the above process.

摘要翻译： 制备硝酸镁六水合物的方法，无需过滤助剂。 制备硝酸镁六水合物的方法主要包括：（a）在熔融的硝酸镁六水合物中在悬浮温度超过90℃下形成氧化镁或碳酸镁悬浮液。 （b）在搅拌下向该悬浮液中加入硝酸溶液，形成含有另外的硝酸镁六水合物的反应混合物; （c）过滤液体反应混合物，得到透明的硝酸镁六水合物滤液; （d）将作为透明滤液得到的液体硝酸镁六水合物的一部分相当于导入的氧化镁或碳酸镁的量排出的部分; （e）利用剩余部分作为液体介质，用于将氧化镁或碳酸镁与硝酸转化。 根据上述方法，还可以制备含有水合硝酸铵的颗粒，其含有六水合硝酸镁。

公开(公告)号：US4201750A

公开(公告)日：1980-05-06

申请号：US899168

申请日：1978-04-24

申请人： Frank Pitts

发明人： Frank Pitts

IPC分类号： C01F5/30 ,  C01F5/38 ,  C01F5/40

CPC分类号： C01F5/38 ,  C01F5/30 ,  C01F5/40

摘要： A process for the preparation of magnesium compounds from breunnerite or from mineral concentrates or tailings containing breunnerite in which the mineral is calcined and treated with an acid and the magnesium salt solution so formed is separated from insoluble matter.

摘要翻译： 从Breunnerite制备镁化合物的方法或从含有矿物的矿物质浓缩物或尾矿中制备镁化合物的方法，其中该矿物被煅烧并用酸处理并且如此形成的镁盐溶液与不溶物质分离。

公开(公告)号：US12091727B2

公开(公告)日：2024-09-17

申请号：US18375341

申请日：2023-09-29

申请人： James G. Blencoe ,  Arend Groen

发明人： James G. Blencoe ,  Arend Groen

IPC分类号： C22B3/06 ,  C01D15/02 ,  C01F5/38 ,  C22B21/00 ,  C22B26/12

CPC分类号： C22B3/065 ,  C01D15/02 ,  C01F5/38 ,  C22B21/0007 ,  C22B21/0015 ,  C22B26/12

摘要： An improved beta(β)-spodumene (˜LiAlSi2O6) nitric acid conversion process produces discrete lithium (Li), aluminum (Al) and silica (SiO2) materials by: (i) converting lithium nitrate, LiNO3, to lithium carbonate, Li2CO3; (ii) creating a Al-rich precipitate either by thermally decomposing aluminum nitrate, Al(NO3)3, or by reacting Al(NO3)3 with aqueous and/or solid ammonium carbonate, (NH4)2CO3; and (iii) forming a solid SiO2-rich aluminosilicate residue by selectively leaching Li and Al from β-spodumene. Three key reactants consumed during processing—nitric acid (HNO3), ammonia (NH3), and magnesium oxide (MgO)—may be regenerated internally by closed-loop chemical cycles, this feature of the process greatly improving its economics in commercial applications.

公开(公告)号：US4724132A

公开(公告)日：1988-02-09

申请号：US903633

申请日：1986-09-04

申请人： Carl J. Fabry

发明人： Carl J. Fabry

IPC分类号： B01J8/08 ,  C01D5/02 ,  C01D9/04 ,  C01F5/00 ,  C01F5/38 ,  C01F11/00 ,  C01F11/38 ,  C01G3/08 ,  C01G9/00 ,  C01G45/08 ,  C05C5/02 ,  C05D1/02 ,  C01F5/30 ,  C01G3/05 ,  C01G9/04

CPC分类号： C05C5/02 ,  B01J8/085 ,  C01D5/02 ,  C01D9/04 ,  C01F11/00 ,  C01F11/38 ,  C01F5/00 ,  C01F5/38 ,  C01G3/08 ,  C01G45/08 ,  C01G9/00 ,  C05D1/02 ,  C01P2004/61

摘要： A continuous process for the manufacture of a metal salt solution is described which provides more economical products with higher quality than current processes. The process is safer, both to operating personnel and to the environment, than currently used processes. The process comprises feeding an aqueous metal compound slurry, e.g., a metal oxide/hydroxide slurry and a mineral acid, e.g., nitric acid, and water to a reactor which includes a zone of extreme mixing and agitation, most preferably a cross-pipe reactor provided with an optional static in-line mixer. A cross-pipe reactor provides complete and efficient reaction by providing greater surface area, high agitation and a long reaction time.

摘要翻译： 描述了用于制造金属盐溶液的连续方法，其提供比当前方法更高质量的更经济的产品。 这个过程比操作人员和环境更安全，比目前使用的流程更安全。 该方法包括将含水金属化合物浆料，例如金属氧化物/氢氧化物浆料和无机酸（例如硝酸和水）加入到包括极端混合和搅拌区域的反应器中，最优选的是跨管反应器 配有可选的静态在线搅拌机。 横管式反应器提供了更高的表面积，高搅拌和较长的反应时间，从而提供了完整和有效的反应。

公开(公告)号：US4289736A

公开(公告)日：1981-09-15

申请号：US71175

申请日：1979-08-31

申请人： Jean M. Lalancette

发明人： Jean M. Lalancette

IPC分类号： C01F5/30 ,  C01F5/00 ,  C01F5/38 ,  C01F5/40

CPC分类号： C01F5/00

摘要： The addition of an excess of asbestos tailings in the course of the extraction of magnesium from asbestos tailings by digestion with an acid greatly facilitates the elimination of silica and other impurities by filtration of the resulting reaction mixture. The improvement reduces the filtration time and the filtration leaves a cake which is much easier to dispose.

摘要翻译： 在通过用酸消化从石棉尾矿提取镁的过程中加入过量的石棉尾矿极大地促进了通过过滤所得到的反应混合物来消除二氧化硅和其它杂质。 该改进减少了过滤时间，并且过滤留下了更容易处理的蛋糕。

公开(公告)号：US4145404A

公开(公告)日：1979-03-20

申请号：US850380

申请日：1977-11-10

申请人： Shigeo Miyata ,  Masataka Kuroda ,  Akira Okada ,  Tosihumi Okazaki ,  Mitsuo Takasu

发明人： Shigeo Miyata ,  Masataka Kuroda ,  Akira Okada ,  Tosihumi Okazaki ,  Mitsuo Takasu

IPC分类号： C01F5/14 ,  C01F5/30 ,  C01F5/38 ,  C08K3/22 ,  C08K9/04

CPC分类号： C08K9/04 ,  C01F5/14 ,  C01F5/30 ,  C01F5/38 ,  C08K3/22 ,  C01P2002/52 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2004/10 ,  C01P2004/61 ,  C01P2004/82 ,  C01P2006/12

摘要： A novel magnesium hydroxide of the formula Mg(OH).sub.2 having (i) a strain in the direction of not more than 3.0 .times. 10.sup.-3, (ii) a crystallite size in the direction of more than 800 A, and (iii) a specific surface area of less than 20 m.sup.2 /g. The magnesium hydroxide, if desired as coated with anionic surfactants, is useful, for example, as fire retardants for thermoplastic synthetic resins and aqueous paints. The novel magnesium hydroxide is prepared by heating in an aqueous medium at an elevated pressure a novel basic magnesium chloride or nitrate of this invention expressed by the formula Mg(OH).sub.2-x A.sub.x .sup.. mH.sub.2 O wherein A is Cl or NO.sub.3, x is a number of more than 0 but less than 0.2, and m is a number of 0 to 6.

公开(公告)号：US20240132991A1

公开(公告)日：2024-04-25

申请号：US18375341

申请日：2023-09-29

申请人： James G. Blencoe ,  Arend Groen

发明人： James G. Blencoe ,  Arend Groen

IPC分类号： C22B3/06 ,  C01D15/02 ,  C01F5/38 ,  C22B21/00 ,  C22B26/12

CPC分类号： C22B3/065 ,  C01D15/02 ,  C01F5/38 ,  C22B21/0007 ,  C22B21/0015 ,  C22B26/12

摘要： An improved beta(β)-spodumene (˜LiAlSi2O6) nitric acid conversion process produces discrete lithium (Li), aluminum (Al) and silica (SiO2) materials by: (i) converting lithium nitrate, LiNO3, to lithium carbonate, Li2CO3; (ii) creating a Al-rich precipitate either by thermally decomposing aluminum nitrate, Al(NO3)3, or by reacting Al(NO3)3 with aqueous and/or solid ammonium carbonate, (NH4)2CO3; and (iii) forming a solid SiO2-rich aluminosilicate residue by selectively leaching Li and Al from β-spodumene. Three key reactants consumed during processing—nitric acid (HNO3), ammonia (NH3), and magnesium oxide (MgO)—may be regenerated internally by closed-loop chemical cycles, this feature of the process greatly improving its economics in commercial applications.

公开(公告)号：US08524114B2

公开(公告)日：2013-09-03

申请号：US11989466

申请日：2006-07-27

申请人： John Arthur Bewsey

发明人： John Arthur Bewsey

IPC分类号： C09K3/00 ,  C01B21/50 ,  C01F5/38 ,  C01F11/36

CPC分类号： C01F11/44 ,  C01F5/38 ,  C01F11/42 ,  C01P2006/82

摘要： A method of producing anhydrous calcium nitrate, anhydrous magnesium nitrate or mixture thereof involves removing water from a solution of calcium nitrate, magnesium nitrate or mixture thereof in a pulse combustion drier. The invention also provides a mixture of anhydrous calcium nitrate, anhydrous magnesium nitrate and the individual anhydrous nitrate salts in a sealed container.

公开(公告)号：US20090189117A1

公开(公告)日：2009-07-30

申请号：US11989466

申请日：2006-07-27

申请人： John Arthur Bewsey

发明人： John Arthur Bewsey

IPC分类号： C09K3/00 ,  C01F11/36 ,  C01F5/38

CPC分类号： C01F11/44 ,  C01F5/38 ,  C01F11/42 ,  C01P2006/82

摘要： A method of producing anhydrous calcium nitrate, anhydrous magnesium nitrate or mixture thereof involves removing water from a solution of calcium nitrate, magnesium nitrate or mixture thereof in a pulse combustion drier. The invention also provides a mixture of anhydrous calcium nitrate, anhydrous magnesium nitrate and the individual anhydrous nitrate salts in a sealed container.

摘要翻译： 制备无水硝酸钙，无水硝酸镁或其混合物的方法包括在脉冲燃烧干燥器中从硝酸钙，硝酸镁或其混合物的溶液中除去水。 本发明还提供了在密封容器中的无水硝酸钙，无水硝酸镁和各种无水硝酸盐的混合物。