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1.发明授权
公开(公告)号：US4283372A
公开(公告)日：1981-08-11
申请号：US116511
申请日：1980-01-29
摘要： A method for recovering alkali value from sodium bicarbonate-containing ore by utilizing an aqueous solvent containing ammonia. The aqueous ammonia solvent is contacted with the ore to solubilize the sodium bicarbonate-containing ore. The alkali values in the resulting solution are crystallized, preferably as sodium carbonate monohydrate or as sodium sesquicarbonate, which may be processed to recover soda ash. Aqueous ammonia solvent is preferably regenerated from the mother liquor remaining after recovery of the solids, the ammonia solvent then being employed in a cyclic method to recover additional alkali values from the ore.
摘要翻译： 一种利用含氨水溶剂从含碳酸氢钠矿石中回收碱值的方法。 氨水溶剂与矿石接触以溶解含碳酸氢钠的矿石。 所得溶液中的碱值优选结晶，优选为碳酸钠一水合物或倍半碳酸钠，其可被加工以回收苏打灰。 氨水溶剂优选从回收固体后剩余的母液中再生，然后以循环方法使用氨溶剂以从矿石中回收额外的碱值。
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2.发明授权
公开(公告)号：US4134798A
公开(公告)日：1979-01-16
申请号：US885499
申请日：1978-03-13
申请人： Michael L. Pinsky
发明人： Michael L. Pinsky
IPC分类号： C07D251/32 , G01N27/333 , G01N27/56
CPC分类号： G01N27/3335 , C07D251/32
摘要： An electrode that is specific for the isocyanurate ion, and capable of rapid determination of the free isocyanurate ion activity directly in solution uses as its sensing element a platinum wire covered with a polyvinyl chloride membrane. The membrane is plasticized with a solution of a quaternary ammonium salt of isocyanuric acid. When this electrode and a commercial reference electrode are immersed in a solution containing the isocyanurate ion, a differential voltage proportional to the isocyanurate ion concentration is generated which is detected by a pH meter.
摘要翻译： 对于异氰脲酸根离子具有特异性，并且能够直接在溶液中快速测定游离异氰脲酸根离子活性的电极用作其感测元件，覆盖有聚氯乙烯膜的铂丝。 膜用异氰脲酸的季铵盐的溶液增塑。 当将该电极和商业参考电极浸入含有异氰脲酸酯离子的溶液中时，产生与异氰酸酯离子浓度成比例的差分电压，其通过pH计检测。
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3.发明授权Enhanced recovery of soda ash from aqueous sodium carbonate solutions containing Na.sub.2 SO.sub.4 - and NaCl 失效从含Na 2 SO 4和NaCl的碳酸钠水溶液中提高苏打灰的回收率
公开(公告)号：US4519806A
公开(公告)日：1985-05-28
申请号：US444640
申请日：1982-11-26
CPC分类号： C01B7/24
摘要： A method for enhancing the recovery of dense soda ash from Na.sub.2 SO.sub.4 - and NaCl-containing aqueous sodium carbonate solutions by first co-crystallizing anhydrous sodium carbonate and burkeite and next introducing the co-crystallized solids to an aqueous medium at elevated temperature to dissolve the burkeite and cause reversion of the anhydrous sodium carbonate solids to crystalline sodium carbonate monohydrate, which is then separated from the dissolved sulfate and recovered as product.
摘要翻译： 通过首先使无水碳酸钠和伯克碱共结晶，然后将共结晶的固体在高温下引入含水介质中以溶解烧碱，从而提高从含有Na 2 SO 4和含NaCl的碳酸钠水溶液中回收致密苏打灰的方法 并引起无水碳酸钠固体转化为结晶碳酸钠一水合物，然后将其从溶解的硫酸盐中分离出来并作为产物回收。
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公开(公告)号：US4344650A
公开(公告)日：1982-08-17
申请号：US216096
申请日：1980-12-15
申请人： Michael L. Pinsky , John Walden
发明人： Michael L. Pinsky , John Walden
CPC分类号： E21B43/28 , C22B3/12 , C22B3/14 , E21B43/40 , Y02P10/234
摘要： A cyclic method for recovering alkali values from subterranean trona deposits. The ore is contacted via solution mining with an aqueous mining solvent containing sodium hydroxide, the resulting Na.sub.2 CO.sub.3 -containing solution is withdrawn and carbonated, and sodium sesquicarbonate and/or sodium bicarbonate is crystallized and separated from the solution. The crystallized solids are calcined in a direct coal-fired calciner, and the resultant anhydrous soda ash is recrystallized in water to form sodium carbonate monohydrate or anhydrous sodium carbonate, which is recovered as a dense alkali product. Aqueous mining solvent is regenerated by causticization of one or more of the various liquor streams, and the recovery cycle is repeated.
摘要翻译： 从地下天然碱沉积物中回收碱值的循环方法。 矿石通过溶液开采与含有氢氧化钠的含水开采溶剂接触，取出所得的含有Na 2 CO 3的溶液并碳酸化，并将倍半碳酸钠和/或碳酸氢钠结晶并与溶液分离。 结晶固体在直接燃煤煅烧炉中煅烧，所得无水苏打灰在水中重结晶，形成碳酸钠一水合物或无水碳酸钠，将其作为致密碱产物回收。 通过一种或多种各种液流的苛化来再生水性采矿溶剂，并重复回收循环。
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公开(公告)号：US4316879A
公开(公告)日：1982-02-23
申请号：US807698
申请日：1977-06-17
IPC分类号： C01B15/10
CPC分类号： C01B15/103
摘要： Sodium carbonate peroxide stabilized against loss of its active oxygen content is prepared by incorporating into sodium carbonate peroxide an ethylene oxide-derivative stabilizing agent selected from the group consisting of polyethylene glycol, polyethoxy fatty acid tertiary amines, diamines and quaternary ammonium salts thereof, N,N-polyethoxy fatty acid amides and polyethoxy fatty acid esters and recovering the sodium carbonate peroxide as a dry, free-flowing solid.
摘要翻译： 通过将碳酸钠过氧化物加入到由聚乙二醇，聚乙氧基脂肪酸叔胺，其二胺和季铵盐组成的组中的环氧乙烷衍生物稳定剂，N， N-聚乙氧基脂肪酸酰胺和聚乙氧基脂肪酸酯，并将碳酸钠过氧化物作为干燥，自由流动的固体回收。
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