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公开(公告)号：US4021526A
公开(公告)日：1977-05-03
申请号：US587585
申请日：1975-06-17
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
CPC分类号： C01D7/37
摘要： In the process of making sodium carbonate from trona by the method involving crushing the trona, calcining it and dissolving it in an aqueous medium for purification by crystallization, soluble silicate contamination of the crystallization liquor is reduced by an improvement which involves: (a) segregating the calcined trona into a coarse and a fine fraction; (b) separately dissolving the coarse and fine fractions to obtain aqueous solutions of sodium carbonate, sodium silicates and insoluble impurities; (c) optionally adding to the solution of the fine fraction insoluble impurities which have been separated from a solution of such fine fraction in a previous operation; followed by (d) digesting the solution of the fine fraction containing added insolubles at elevated temperature to insolubilize soluble silicates and separating the digested solution from insoluble impurities.
摘要翻译： 在通过包括粉碎天然碱的方法制备碳酸钠的过程中，将其煅烧并将其溶解在水性介质中以通过结晶进行纯化，结晶液的可溶性硅酸盐污染通过改进降低，其包括：（a）分离 将煅烧的天然碱变成粗和细级分; （b）分别溶解粗细级分，得到碳酸钠，硅酸钠和不溶性杂质的水溶液; （c）任选地在以前的操作中向已经从这种细级分溶液中分离出的细小级不溶性杂质溶液中加入; 然后（d）在升高的温度下将含有不溶物的细小级分的溶液消化，使可溶性硅酸盐不溶解并将消化的溶液与不溶性杂质分离。
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公开(公告)号：US4422907A
公开(公告)日：1983-12-27
申请号：US335773
申请日：1981-12-30
申请人： Albert A. Birkmaier , Gary A. Harpell , Bruce E. Kurtz , Gordhanbhai N. Patel , Rustom P. Poncha , Adam L. Skovrinski , James M. Lesco
发明人： Albert A. Birkmaier , Gary A. Harpell , Bruce E. Kurtz , Gordhanbhai N. Patel , Rustom P. Poncha , Adam L. Skovrinski , James M. Lesco
CPC分类号： C23C18/22 , H05K3/181 , H05K3/381 , Y10S205/924 , Y10S205/928
摘要： This invention relates to a process for conditioning the surfaces of natural and synthetic plastic materials for electroless plating of a metal coating thereon by exposing such materials to an atmosphere comprising an effective amount of ozone and thereafter contacting said exposed materials with an effective amount of a conditioning solvent, such as an aqueous solution of sodium, potassium or lithium hydroxide.
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3.发明授权
公开(公告)号：US4044097A
公开(公告)日：1977-08-23
申请号：US723681
申请日：1976-09-16
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
CPC分类号： C01D7/00
摘要： Soda values from the crystallizer mother liquor purge in the process of making sodium carbonate from trona are recovered by (1) mixing the purge with treating agent of magnesium oxide, aluminum oxide, bauxite, certain fine particle size calcined trona, insoluble impurities obtained in the trona-soda ash process, or mixtures thereof, (2) evaporating the resulting mixture to dryness and calcining it to insolubilize soluble silicates and to reduce contamination with carbonaceous impurities, and (3) leaching the calcined mixture with water or aqueous sodium carbonate solution.
摘要翻译： （1）将吹扫与氧化镁，氧化铝，铝土矿，某些细粒度的煅烧天然碱的处理剂混合，得到的不溶性杂质，可以回收来自三氯生碳酸钠的过程中结晶器母液吹扫的苏打值 （2）将所得混合物蒸发至干，并煅烧以使可溶性硅酸盐不溶解，并减少含碳杂质的污染，和（3）用水或碳酸钠水溶液浸提煅烧的混合物。
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4.发明授权
公开(公告)号：US4022867A
公开(公告)日：1977-05-10
申请号：US587575
申请日：1975-06-17
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
CPC分类号： C01D7/37
摘要： In the process for making sodium carbonate from trona, the soluble silicate content of crystallizer mother liquor from which sodium carbonate precursor crystals are obtained by evaporative crystallization is reduced by the method which comprises:1. digesting said mother liquor at elevated temperature for time sufficient to reduce soluble silicates, in the presence as treating agent of insolubles which have been obtained by (a) calcination of crushed trona, (b) segregation of a fine particle size fraction from the calcined trona, (c) dissolution of said fine particle size fraction in an aqueous medium to obtain a solution comprising sodium carbonate and insolubles, followed by (d) separating insolubles, and2. separating the insolubles from the digested mother liquor, and recycling the mother liquor to the process.
摘要翻译： 在从天然碱制造碳酸钠的方法中，通过蒸发结晶获得碳酸钠前体晶体的结晶器母液的可溶性硅酸盐含量通过以下方法减少：
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5.发明授权
公开(公告)号：US3991160A
公开(公告)日：1976-11-09
申请号：US587581
申请日：1975-06-17
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
摘要： Soda values from the crystallizer mother liquor purge in the process of making sodium carbonate from trona are recovered by (1) mixing the purge with treating agent of magnesium oxide, aluminum oxide, bauxite, certain fine particle size calcined trona, insoluble impurities obtained in the trona-soda ash process, or mixtures thereof, (2) evaporating the resulting mixture to dryness and calcining it to insolubilize soluble silicates and to reduce contamination with carbonaceous impurities, and (3) leaching the calcined mixture with water or aqueous sodium carbonate solution.
摘要翻译： （1）将吹扫与氧化镁，氧化铝，铝土矿，某些细粒度的煅烧天然碱的处理剂混合，得到的不溶性杂质，可以回收来自三氯生碳酸钠的过程中结晶器母液吹扫的苏打值 （2）将所得混合物蒸发至干，并煅烧以使可溶性硅酸盐不溶解，并减少含碳杂质的污染，和（3）用水或碳酸钠水溶液浸提煅烧的混合物。
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公开(公告)号：US4738836A
公开(公告)日：1988-04-19
申请号：US923249
申请日：1986-10-27
申请人： Rustom P. Poncha , Ronald E. Sorg
发明人： Rustom P. Poncha , Ronald E. Sorg
摘要： Sodium carbonate having a high bulk density and pseudo-cubic crystal structure is prepared from impure trona purge liquors from the crystallizers containing high concentration of organics, silica and sulfate by a sequence of steps involving (1) treatment of the liquors with MgO; (2) separation of the treated liquor from the insoluble reaction products; (3) addition of Ca and Mg compounds to the liquor; (4) evaporating the solution to obtain sodium carbonate monohydrate crystals; (5) separating the crystals from the mother liquor; and (6) heating the crystals at temperature of about 150.degree.-200.degree. C. to convert to dense ash.
摘要翻译： 具有高堆积密度和假立方晶体结构的碳酸钠由含有高浓度有机物，二氧化硅和硫酸盐的结晶器的不纯天然碱清洗液通过一系列步骤制备，所述步骤包括（1）用MgO处理液体; （2）将处理液与不溶性反应产物分离; （3）向酒中加入Ca和Mg化合物; （4）蒸发溶液得到一水合碳酸钠晶体; （5）从母液中分离晶体; 和（6）在约150℃-200℃的温度下加热晶体以转化成致密的灰分。
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7.发明授权Process for the conversion of light ash to absorptive low bulk density alkali products 失效将轻灰转化为吸收性低堆积密度碱产品的方法
公开(公告)号：US4285925A
公开(公告)日：1981-08-25
申请号：US934137
申请日：1978-08-16
申请人： Rustom P. Poncha
发明人： Rustom P. Poncha
CPC分类号： C01D7/14
摘要： A method for production of absorptive particles of Wegscheider's Salt (Na.sub.2 CO.sub.3.3NaHCO.sub.3) having low bulk density and acceptable flow properties, by reaction of anhydrous sodium carbonate particles with water and carbon dioxide is disclosed. Particles of anhydrous sodium carbonate having a bulk density less than about 750 g/l are contacted with water up to 1.55 times the stoichiometric amount of water required for the formation of sodium carbonate monohydrate. Carbon dioxide is added in two stages; in the first, the reaction zone is maintained at ambient temperatures, the second, the reaction zone is preheated and the reaction temperature is maintained at between about 90.degree. and 105.degree. C. until at least about 50 weight percent Wegscheider's Salt is produced. Water is added to the carbon dioxide in the second stage if less than about 1.20 times the stoichiometric amount of water is added to the particles of anhydrous sodium carbonate in the first stage and when about 1.20 to 1.55 of the stoichiometric amount of water is added to the particles of anhydrous sodium carbonate in the first stage substantially dry carbon dioxide is used in both stages. 2
摘要翻译： 公开了通过无水碳酸钠颗粒与水和二氧化碳的反应来生产具有低堆积密度和可接受的流动性质的Wegscheider's Salt（Na 2 CO 3·3HaCO 3）吸收性颗粒的方法。 体积密度小于约750g / l的无水碳酸钠颗粒与达到形成碳酸钠一水合物所需化学计量量的1.55倍的水接触。 二氧化碳分两个阶段加入; 首先，将反应区保持在环境温度，其次，将反应区预热，并将反应温度保持在约90℃至105℃之间，直到产生至少约50重量％的Wegscheider盐。 如果在第一阶段中少于加入无水碳酸钠颗粒的化学计量量的约1.20倍，则向第二阶段的二氧化碳中加入水，当加入约1.20至1.55的化学计量量的水 在两个阶段都使用第一阶段的无水碳酸钠颗粒基本上干燥的二氧化碳。
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公开(公告)号：US4022868A
公开(公告)日：1977-05-10
申请号：US587576
申请日：1975-06-17
申请人： Rustom P. Poncha
发明人： Rustom P. Poncha
CPC分类号： C01D7/37
摘要： In the process of making sodium carbonate from trona involving the steps of crushing the trona, calcining the crushed trona, dissolving the calcined trona to obtain a solution comprising sodium carbonate and insoluble impurities contaminated by soluble silicates and soluble carbonaceous matter, contamination of the sodium carbonate solution with soluble carbonaceous matter is reduced by the improvement which comprises calcining the crushed trona at temperature of 300.degree. C. to 600.degree. C. in the presence of magnesium oxide. When the trona is calcined in the presence of magnesium oxide at temperature of 350.degree. to 600.degree. C., then the sodium carbonate solution is low in both soluble carbonaceous matter as well as insoluble silicates.
摘要翻译： 在从天然碱制造碳酸钠的过程中，包括粉碎天然碱的步骤，煅烧破碎的天然碱，将煅烧的天然碱溶解，得到包含可溶性硅酸盐和可溶性碳质物质污染的碳酸钠和不溶性杂质的溶液，碳酸钠的污染 通过包括在氧化镁存在下在300℃至600℃的温度下煅烧破碎的天然碱的改进来降低可溶性碳质物质的溶液。 当在350℃至600℃的温度下在氧化镁存在下煅烧天然碱时，碳酸钠溶液中的可溶性碳质物质以及不溶性硅酸盐都较低。
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公开(公告)号：US3944500A
公开(公告)日：1976-03-16
申请号：US540615
申请日：1975-01-13
申请人： Alan B. Gancy , Rustom P. Poncha
发明人： Alan B. Gancy , Rustom P. Poncha
摘要： Low bulk density products containing at least 10% Wegscheider's Salt (Na.sub.2 CO.sub.3.3NaHCO.sub.3), by weight, in needlelike form are produced from sodium bicarbonate by heating in two distinct steps an aqueous feed mixture comprising by weight at least about 50% sodium bicarbonate and about 3 to 25% Wegscheider's Salt.
摘要翻译： 含有至少10％的Wegscheider's盐（Na 2 CO 3·3H 2 CO 3）的低体积密度产物，以重量计，由碳酸氢钠通过在两个不同的步骤中加热制备含有至少约50％碳酸氢钠和约 3至25％Wegscheider's Salt。
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10.发明授权
公开(公告)号：US5137640A
公开(公告)日：1992-08-11
申请号：US695824
申请日：1991-05-06
申请人： Rustom P. Poncha
发明人： Rustom P. Poncha
CPC分类号： C02F1/5236 , C01G28/02 , C01G49/00 , C01P2002/72 , C01P2002/74 , C01P2002/77 , C01P2006/60 , Y10S210/911
摘要： A process for reducing arsenic levels in a solution containing sulfuric acid, water, and arsenic acid by adding copper or a copper-containing compound to the solution to form dissolved copper arsenate, adding alkali solution to precipitate the copper arsenate and to neutralize arsenic and sulfuric acid. The copper arsenate is separated, and the remaining solution is treated with a ferric compound and an alkali in order to form ferric arsenate to remove residual arsenate. The ferric arsenate is separated and the remaining solution contains less than about 0.79 ppm arsenic. The ferric compound is added so that the ratio of iron to arsenic is about 8:1 to about 10:1 and alkali is added during this step to adjust the pH to from about 5 to about 7.
摘要翻译： 通过向溶液中加入铜或含铜化合物来形成溶解的砷酸铜，通过添加碱溶液来沉淀砷酸铜并中和砷和硫，从而降低含有硫酸，水和砷酸的溶液中的砷含量的方法 酸。 分离出砷酸铜，剩余的溶液用铁化合物和碱处理，以形成砷酸铁以除去残留的砷酸盐。 砷酸铁被分离，剩余的溶液含有少于约0.79ppm的砷。 添加铁化合物使得铁与砷的比例为约8:1至约10:1，并且在该步骤中加入碱以将pH调节至约5至约7。
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