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公开(公告)号：US4299799A
公开(公告)日：1981-11-10
申请号：US138484
申请日：1980-04-09
CPC分类号： C01D7/126
摘要： Improved process for preparing sodium carbonate from crude trona without carbon column scaling by evaporating a portion of water from a clarified sodium carbonate solution to crystallize sodium carbonate crystals therefrom, separating the sodium carbonate crystals from the crystallizer liquor, passing only the crystallizer liquor which contains organic impurities through a carbon column to reduce the organic impurity concentration therein, and evaporating a portion of water from the carbon treated crystallizer liquor to crystallize additional sodium carbonate crystals.
摘要翻译： 通过从澄清的碳酸钠溶液中蒸发一部分水以从其中结晶出碳酸钠晶体，从粗制天然碱制备碳酸钠而不进行碳柱结垢的改进方法，从结晶器液体中分离出碳酸钠晶体，仅将含有有机物的结晶器液体 杂质通过碳柱减少其中的有机杂质浓度，并蒸发一部分来自经碳处理的结晶器液体的水以结晶另外的碳酸钠晶体。
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公开(公告)号：US5043149A
公开(公告)日：1991-08-27
申请号：US574837
申请日：1990-08-29
CPC分类号： E21B41/0057 , C01D7/126 , E21B43/28 , E21B43/40
摘要： Process for disposing of insoluble tailings that remain when solubilizing uncalcined or calcined trona in the process of producing soda ash, in which the tailings are slurried with water or waste solutions of sodium carbonate and/or sodium bicarbonate, pumping the slurry into a well connected to an underground mined-out cavity with sufficient pressure to prevent build-up of tailings from plugging the bottom of the well opening, dispersing and settling said tailings in the cavity, removing a liquor from said cavity whose concentration of sodium carbonate and/or sodium bicarbonate has been increased and recovering such enriched liquor for use in the manufacture of sodium-containing chemicals such as soda ash.
摘要翻译： 在生产苏打灰的过程中溶解未煅烧或煅烧的天然碱时留下的不溶性尾矿的处理方法，其中尾矿用水或碳酸钠和/或碳酸氢钠的废溶液浆化，将浆料泵入与 一个具有足够压力的地下开采空腔，以防止尾矿堆积堵塞井口底部，将所述尾矿分散和沉淀在空腔中，从所述腔中除去浓度为碳酸钠和/或碳酸氢钠的浓度 已经增加并回收了用于制造含钠化学物质如苏打灰的这种富含液体。
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公开(公告)号：US4401635A
公开(公告)日：1983-08-30
申请号：US226288
申请日：1981-01-19
申请人： William R. Frint
发明人： William R. Frint
摘要： A method for recovering alkali values from subterranean deposits of trona ore associated with sodium chloride by contacting the trona with an aqueous mining solution containing sodium hydroxide and subsequently utilizing the alkali values contained in the resultant salt- and sodium carbonate-containing solution. The alkali values are preferably crystallized as substantially salt-free sodium carbonate monohydrate, which is dried to recover soda ash. The mother liquor containing all of the salt is then treated to prepare a dilute sodium hydroxide solution, which may be employed as aqueous mining solution in a cyclic method to recover additional alkali values from trona.
摘要翻译： 通过使天然碱与含有氢氧化钠的含水开采溶液接触并随后利用所得到的含有和含碳酸钠的溶液中所含的碱值，从与氯化钠相关的天然碱矿石的地下沉积物中回收碱值的方法。 碱值优选作为基本上无盐的碳酸钠一水合物结晶，其被干燥以回收苏打灰。 然后处理含有所有盐的母液以制备稀氢氧化钠溶液，其可以循环方法用作含水开采溶液，以从天然碱中回收额外的碱值。
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公开(公告)号：US5262134A
公开(公告)日：1993-11-16
申请号：US839641
申请日：1992-02-21
摘要： A process is described for producing sodium-based chemicals from a brine containing sodium carbonate and sodium bicarbonate by heating the brine to evaporate water and drive off carbon dioxide and obtain a solution that will crystallize sodium sesquicarbonate, cooling the solution, precipitating sodium sesquicarbonate crystals and separating a first mother liquor from the sesquicarbonate crystals. The first mother liquor is then cooled to a lower temperature to precipitate sodium carbonate decahydrate crystals, the decahydrate crystals are separated from a second mother liquor and the decahydrate crystals are recovered for use in the manufacture of sodium-containing chemicals, such as sodium carbonate monohydrate, anhydrous sodium carbonate or soda ash.
摘要翻译： 描述了从含有碳酸钠和碳酸氢钠的盐水生产钠基化学品的方法，该方法是通过加热卤水蒸发水并排出二氧化碳，并获得将使倍半碳酸钠结晶的溶液，冷却该溶液，沉淀倍半碳酸钠晶体和沉淀 将第一母液与倍半碳酸盐晶体分离。 然后将第一母液冷却至较低温度以沉淀碳酸钠十水合物晶体，将十水合物晶体与第二母液分离，并回收十水合物晶体用于制造含钠化学品，例如碳酸钠一水合物 ，无水碳酸钠或苏打灰。
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公开(公告)号：US5238664A
公开(公告)日：1993-08-24
申请号：US722031
申请日：1991-06-27
CPC分类号： E21B41/0057 , C01D7/126 , E21B43/28 , E21B43/40
摘要： Process for disposing of insoluble tailings that remain when solubilizing uncalcined or calcined trona in the process of producing soda ash, in which the tailings are slurried with water or waste solutions of sodium carbonate and/or sodium bicarbonate, adding an alkali metal hydroxide or alkaline earth metal hydroxide in effective amounts up to about 10% by weight of the aqueous slurrying solution, pumping the slurry into a well connected to an underground mined-out cavity with sufficient pressure to prevent build-up of tailings from plugging the bottom of the well opening, dispersing and settling said tailings in the cavity, removing a liquor from said cavity whose concentration of sodium carbonate and/or sodium bicarbonate has been increased and recovering such enriched liquor for use in the manufacture of sodium-containing chemicals such as soda ash.
摘要翻译： 在生产苏打灰的过程中溶解未煅烧或煅烧的天然碱时留下的不溶性尾矿的处理方法，其中尾矿用水或碳酸钠和/或碳酸氢钠的废溶液浆化，加入碱金属氢氧化物或碱土金属 金属氢氧化物，其有效量高达水性浆料溶液的约10重量％，将浆料以足够的压力将浆料泵送到连接到地下开采腔的井中，以防止尾矿堆积以堵塞孔口底部 ，将所述尾矿分散和沉淀在空腔中，从已经增加碳酸钠和/或碳酸氢钠浓度的所述空腔中除去液体，并回收这种用于制造含钠化学物质如苏打灰的富集液体。
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公开(公告)号：US5192164A
公开(公告)日：1993-03-09
申请号：US735586
申请日：1991-07-25
CPC分类号： E21B41/0057 , C01D7/126 , E21B43/28 , E21B43/40
摘要： Process for disposal of insoluble tailings that remain when solubilizing uncalcined or calcined trona in the process of producing soda ash, in which tailings are slurried with a saturated or substantially saturated solution of sodium carbonate, sodium bicarbonate and mixtures thereof, pumping said slurry into a well connected to an underground mined-out cavity with sufficient pressure to prevent the build-up of tailings from plugging the bottom of the well opening, dispersing and settling said tailings and a retained portion of the solution in the cavity, removing solution from said cavity and conveying it to the surface, recovering the removed solution for recycle and slurrying of additional tailings, and adding as make-up liquor to replace the solution retained in the cavity, a saturated or substantially saturated solution of sodium carbonate, sodium bicarbonate and mixtures thereof. The preferred solution employed in this process is purge solution which is discarded from a crystallizer circuit.
摘要翻译： 在生产苏打灰的过程中溶解未煅烧或煅烧的天然碱时留下的不溶性尾矿的处理方法，其中尾矿用饱和或基本饱和的碳酸钠，碳酸氢钠溶液及其混合物浆化，将所述浆料泵入孔中 连接到具有足够压力的地下开采空腔，以防止尾矿堆积堵塞井口的底部，将所述尾矿分散和沉降并将溶液的一部分保留在空腔中，从所述空腔中除去溶液， 将其输送到表面，回收去除的溶液用于再循环和再浆化附加尾矿，并加入作为补充液来代替保留在空腔中的溶液，饱和或基本上饱和的碳酸钠，碳酸氢钠溶液及其混合物。 在该方法中使用的优选溶液是从结晶器回路中丢弃的清洗溶液。
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7.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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