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公开(公告)号：US4342728A
公开(公告)日：1982-08-03
申请号：US225904
申请日：1981-01-19
CPC分类号： C22B34/36 , C22B1/005 , Y02P10/212
摘要： Oxide ores or ore concentrates containing organic matter are slurried with water and heated to a temperature of at least about 230.degree. C. under an oxygen partial pressure of at least about 25 psi to oxidize the organic matter. Advantageously, the process in accordance with the present invention can be used in the treatment of tungsten concentrates and can be employed while the tungsten concentrates are being digested with sodium carbonate or sodium hydroxide solutions.
摘要翻译： 含有有机物的氧化物矿石或矿石浓缩物用水制浆，并在至少约25psi的氧分压下加热到至少约230℃的温度以氧化有机物质。 有利地，根据本发明的方法可以用于钨精矿的处理，并且可以在钨酸精矿用碳酸钠或氢氧化钠溶液消化的同时使用。
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公开(公告)号：US4320095A
公开(公告)日：1982-03-16
申请号：US225913
申请日：1981-01-19
摘要： A process for the soda ash digestion of refractory tungsten concentrates is provided, the process comprising forming a slurry of the concentrate in an aqueous solution to which sodium carbonate is added in stages while digesting the slurry in an autoclave at a selected elevated temperature of at least about 180.degree. C. to control the concentration of the sodium carbonate during digestion to provide high extraction yields of the contained WO.sub.3. The total amount of the Na.sub.2 CO.sub.3 added stage-wise to complete the digestion is substantially inversely correlated to the digestion temperature and substantially directly correlated to the Na.sub.2 CO.sub.3 /WO.sub.3 weight ratio such as to effect dissolution of at least about 97%, and generally at least about 98%, of the WO.sub.3 in the concentrate and provide a pregnant liquor containing WO.sub.3, the stage-wise addition of the sodium carbonate being such as to inhibit the dissolution of gangue minerals, such as silica, contained in the concentrate.
摘要翻译： 提供了一种用于对难熔钨精矿进行苏打灰消化的方法，该方法包括在阶段中加入碳酸钠的水溶液中形成浓缩物的浆液，同时在高压釜中以选定的升高的温度至少消化浆料 约180℃以控制消化期间碳酸钠的浓度，以提供含有WO 3的高提取产率。 逐步添加以完成消化的Na 2 CO 3的总量与消化温度基本上成反比，并且与Na 2 CO 3 / WO 3重量比基本上直接相关，例如至少约97％的溶解，并且通常至少约 98％的浓缩物中的WO 3，并提供含有WO 3的怀孕液体，逐步加入碳酸钠以抑制浓缩物中所含的脉石矿物如二氧化硅的溶解。
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13.发明授权Chemical treatment of low-grade wolframite concentrate having high Mo/WO.sub.3 ratio 失效化学处理具有高Mo / WO3比的低等级的白钨矿精矿
公开(公告)号：US4303622A
公开(公告)日：1981-12-01
申请号：US225908
申请日：1981-01-19
摘要： A process is disclosed for recovering tungsten and molybdenum values from tungsten concentrates containing molybdenum in an amount at least about one-twentieth of the amount of contained WO.sub.3. The concentrate, generally a wolframite concentrate, is subjected to dissolution in hot NaOH solution to provide a pregnant liquor or solution containing tungsten and molybdenum values. The solution, after purification, is treated with a sulfide precipitation agent to precipitate MoS.sub.3 and some WS.sub.3 using a stoichiometric excess of a sulfide precipitating agent to produce a filtrate containing tungsten substantially free of molybdenum. The sulfide precipitate is dissolved in dilute NaOH solution and again precipitated using a stoichiometric deficient amount of the sulfide precipitating agent to produce a precipitate of MoS.sub.3 low in tungsten. The foregoing sulfide precipitation steps may be reversed.
摘要翻译： 公开了一种用于从含有至少约含有WO 3的量的约二十分之一的量的含钨钼精矿中回收钨和钼值的方法。 将浓缩物（通常为钨酸盐浓缩物）在热NaOH溶液中溶解以提供含有钨和钼值的怀孕液体或溶液。 纯化后的溶液用硫化物沉淀剂处理以使用化学计量过量的硫化物沉淀剂沉淀MoS 3和一些WS 3，以产生含有基本上不含钼的钨的滤液。 将硫化物沉淀物溶解在稀NaOH溶液中，并使用化学计量不足量的硫化物沉淀剂再次沉淀，以产生低的钨的MoS 3沉淀物。 上述硫化物沉淀步骤可以颠倒。
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公开(公告)号：US4325919A
公开(公告)日：1982-04-20
申请号：US225910
申请日：1981-01-19
CPC分类号： C01G41/00 , C22B34/36 , Y10S423/05
摘要： A continuous process with feedback control is disclosed for the soda ash digestion of tungsten concentrates in which a slurry of the concentrate in an aqueous sodium carbonate solution is digested in an autoclave at a temperature of at least about 180.degree. C. to provide a pregnant solution of WO.sub.3. High dissolution efficiency is maintained during digestion by continuously monitoring the pregnant solution which includes determining the specific gravity and the Na.sub.2 CO.sub.3 concentration of the pregnant liquor from which feedback signals are produced which are used to control the amount of Na.sub.2 CO.sub.3 and H.sub.2 O fed to the slurry in accordance with the digestion conditions predetermined to provide the desired dissolution efficiency.
摘要翻译： 公开了一种具有反馈控制的连续方法，用于苏打灰消除钨精矿，其中浓缩物在碳酸钠水溶液中的浆液在高压釜中在至少约180℃的温度下消化以提供怀孕溶液 的WO3。 在消化期间通过连续监测怀孕溶液来维持高溶解效率，其包括确定产生反馈信号的怀孕液体的比重和Na 2 CO 3浓度，其用于控制按照下列方式供给到浆料中的Na 2 CO 3和H 2 O的量 预定消化条件以提供所需的溶解效率。
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公开(公告)号：US4320096A
公开(公告)日：1982-03-16
申请号：US225905
申请日：1981-01-19
摘要： A process for the soda digestion of mixed wolframite and scheelite concentrates is provided, the process comprising forming a slurry of the mixed wolframite and scheelite concentrates in an aqueous sodium carbonate solution and then digesting the slurry in an autoclave at a temperature of at least about 180.degree. C. During digestion a predetermined amount of sodium hydroxide is added calculated stoichiometrically to react with NaHCO.sub.3 formed as a result of the hydrolysis of FeCO.sub.3 or FeCO.sub.3 and MnCO.sub.3 produced during the digestion of the wolframite and convert it to Na.sub.2 CO.sub.3. The concentration of the Na.sub.2 CO.sub.3 solution is substantially inversely correlated to the digestion temperature and substantially directly correlated to the Na.sub.2 CO.sub.3 /WO.sub.3 weight ratio ranging from about 0.9 to 2 such as to effect dissolution of at least about 95% of the WO.sub.3 in the concentrate and provide a pregnant liquor containing said WO.sub.3.
摘要翻译： 提供了一种用于混合的白钨矿和白钨矿浓缩物的苏打水消解的方法，该方法包括将混合的黑钨矿和白钨矿精矿的浆料形成在碳酸钠水溶液中，然后在高压釜中在至少约180℃的温度下消化浆料 在消化期间，按化学计量计算加入预定量的氢氧化钠，与作为在硫酸镁消化过程中产生的FeCO 3或FeCO 3和MnCO 3的水解产生的NaHCO 3反应并将其转化为Na 2 CO 3反应。 Na 2 CO 3溶液的浓度与消化温度基本上成反比，并且与Na 2 CO 3 / WO 3重量比基本上直接相关，其范围为约0.9至2，例如至少约95％的WO 3在浓缩物中的溶解，并提供 含有WO3的怀孕液体。
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16.发明授权
公开(公告)号：US4900522A
公开(公告)日：1990-02-13
申请号：US888310
申请日：1986-07-22
申请人： Eddie C. Chou , Leo W. Beckstead
发明人： Eddie C. Chou , Leo W. Beckstead
CPC分类号： C22B3/0067 , C01G51/003 , C01G53/003 , C22B3/0017 , C22B3/0066 , C22B3/0068 , C22B3/0095 , Y02P10/234 , Y10S423/14
摘要： Sulfate solutions containing nickel and cobalt ions are treated by solvent extraction to provide a nickel raffinate with a high Ni:Co ratio and a cobalt raffinate with a high Co:Ni ratio and with low recycle of cobalt by treating the solution with a cobalt extractant to provide a nickel raffinate of high Ni:Co ratio and a loaded extractant, acid stripping the loaded extractant to provide a cobalt sulfate solution containing some nickel and a regenerated cobalt extractant, treating the cobalt sulfate solution with a nickel extractant to provide a cobalt raffinate with a high Co:Ni ratio and acid stripping the loaded nickel extractant to regenerate the extractant and to provide a recyclable sulfate solution containing only a small proportion of the original cobalt.
摘要翻译： 通过溶剂萃取处理含有镍和钴离子的硫酸盐溶液，通过用钴萃取剂处理溶液来提供具有高Ni:Co比的镍萃余液和Co:Ni比高的钴萃余液和钴的低循环 提供高Ni:Co比的镍提余液和负载的萃取剂，酸性汽提负载的萃取剂以提供含有一些镍的钴硫酸盐溶液和再生的钴萃取剂，用镍萃取剂处理硫酸钴溶液以提供钴萃余液， 较高的Co:Ni比和酸性汽提负载的镍萃取剂以再生萃取剂，并提供仅含少量原始钴的可再循环硫酸盐溶液。
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公开(公告)号：US4761177A
公开(公告)日：1988-08-02
申请号：US66437
申请日：1987-06-26
CPC分类号： B22F9/26 , C22B23/0461
摘要： Fine cobalt or nickel powder is produced by hydrogen reduction of a sulfate solution in the presence of a base and a strong reductant such as a metal borohydride wherein the base is added stagewise to the solution with the initial addition of base being sufficient to insure an essentially neutral pH at the time of reductant addition.
摘要翻译： 在碱和强还原剂例如金属硼氢化物的存在下，通过硫酸盐溶液的氢还原来制备细钴或镍粉，其中碱与阶段性地加入到溶液中，初始添加碱足以保证基本上 还原剂添加时的中性pH值。
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公开(公告)号：US4443415A
公开(公告)日：1984-04-17
申请号：US391027
申请日：1982-06-22
CPC分类号： C01G31/00 , C22B23/0415 , C22B34/22 , Y02P10/234
摘要： Vanadium and nickel values are selectively recovered from a petroleum coke residue by slurrying the coke in an aqueous solution of sodium carbonate providing an excess of the stoichiometric amount of sodium for formation of sodium vanadate and sodium sulfate, and then digesting the slurry at moderately elevated temperature in a pressurized autoclave under an oxygen overpressure supplying at least the stoichiometric amount of oxygen based on the vanadium and sulfur content of the slurry and advantageously sufficient additional oxygen to provide the thermal requirements of the digestion step by oxidation of carbon. In a continuous embodiment, the feed slurry temperature and feed solids content are adjusted according to a substantially inversely correlated relationship. The digestion temperature for a given total pressure and gas flow rate in the autoclave is adjusted to generate a pregnant liquor containing about 20 gpl to about 100 gpl of vanadate (V.sub.2 O.sub.5) from which at least about 50% of the input water has been converted to steam during the digestion. The vanadate liquor is separated from the digestion residue, which is then sequentially selectively leached for recovery therefrom of nickel and residual vanadium values.
摘要翻译： 通过将焦炭在碳酸钠水溶液中浆化，提供过量的化学计量的钠以形成钒酸钠和硫酸钠，然后在适度升高的温度下消化浆料，从石油焦炭残渣中选择性回收钒和镍的值 在加压高压釜中，在氧气超压下，基于浆料的钒和硫含量至少提供化学计量的氧气，并且有利地具有足够的额外的氧气，以通过氧化碳来提供消化步骤的热需求。 在连续的实施方案中，根据基本上相反的关系来调整进料浆料温度和进料固体含量。 调节高压釜中给定的总压力和气体流速的消化温度以产生含有约20gp1至约100gp1钒酸盐（V2O5）的怀孕液体，至少约50％的输入水已转化为 蒸煮消化过程中。 将钒酸盐液体与消化残余物分离，然后依次选择性地浸提以从镍中回收镍和残留的钒值。
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公开(公告)号：US4397821A
公开(公告)日：1983-08-09
申请号：US337558
申请日：1982-01-04
申请人： Leo W. Beckstead , Paul B. Queneau
发明人： Leo W. Beckstead , Paul B. Queneau
CPC分类号： C01G41/00
摘要： Synthetic scheelite (calcium tungstate) having a low sulfur content is produced in high yield from an aqueous solution of sodium tungstate, that can be contaminated with sulfate ion dissolved therein, by digesting the solution with solid calcium sulfate whereby low-sulfur calcium tungstate precipitates. The solution remaining after filtration of the calcium tungstate product can be treated with calcium sulfate to precipitate additional purified calcium tungstate or to generate a calcium tungstate-calcium sulfate mixture that can be recycled for digestion with additional sulfate-contaminated sodium tungstate solution.
摘要翻译： 通过用固体硫酸钙消化溶液，由钨酸钨低沉淀析出，从钨酸钠水溶液中产生硫酸盐含量低的合成白钨矿（钨酸钙）可以被溶解在其中的硫酸根离子污染。 过滤钨酸钙产品后剩下的溶液可以用硫酸钙处理以沉淀另外的纯化的钨酸钙，或者产生钨酸钙 - 硫酸钙混合物，其可再循环用于另外的硫酸盐污染的钨酸钠溶液的消化。
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公开(公告)号：US4328190A
公开(公告)日：1982-05-04
申请号：US225906
申请日：1981-01-19
申请人： Leo W. Beckstead , Dale K. Huggins
发明人： Leo W. Beckstead , Dale K. Huggins
CPC分类号： C22B3/0012 , C01G41/003 , Y02P10/234
摘要： A process for extracting tungsten values from an aqueous phase into an organic phase, comprises(a) providing an aqueous phase containing tungsten values dissolved therein, and having an initial pH of about 2.2 to about 4.0,(b) providing an organic phase depleted in tungsten and containing a secondary amine or tertiary amine extractant, a modifier, and the balance a liquid hydrocarbon solvent,(c) extracting tungsten values from said aqueous phase into said organic phase in a plurality of extraction stages operating in countercurrent fashion, and(d) recovering the organic phase enriched in tungsten values and an aqueous raffinate having a pH of about 0.3 to about 4.5.
摘要翻译： 提供从水相中将钨值提取到有机相中的方法包括（a）提供含有钨值的水相溶解在其中，并且初始pH为约2.2至约4.0，（b）提供耗尽的有机相 钨，并含有仲胺或叔胺萃取剂，改性剂，余量为液态烃溶剂，（c）在逆流运行的多个萃取阶段将钨值从所述水相萃取到所述有机相中，和（d ）回收富含钨值的有机相和pH为约0.3至约4.5的含水萃余液。
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