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公开(公告)号：US4490339A
公开(公告)日：1984-12-25
申请号：US577103
申请日：1984-02-06
摘要： A process is provided for recovering molybdenum and tungsten separately from a sulfide cake containing the same along with arsenic as an impurity. The process comprises dissolving essentially all of the tungsten and molybdenum values contained in the cake in a caustic solution containing at least about 5 but not more than about 6 moles of sodium hydroxide per mole of tungsten plus molybdenum contained in the cake, separating insoluble material from the resulting leach solution and then precipitating one metal value from the group consisting of molybdenum and tungsten preferentially from the other.
摘要翻译： 提供了从含有砷的硫化物饼和作为杂质的砷分别回收钼和钨的方法。 该方法包括将包含在滤饼中的基本上所有钨和钼的值溶解在含有至少约5但不超过约6摩尔氢氧化钠的苛性碱溶液中，每摩尔钨加上蛋糕中所含的钼加钼，将不溶物从 所得到的浸出溶液，然后从另一个优先从钼和钨组成的组中沉淀出一个金属值。
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2.发明授权
公开(公告)号：US4504448A
公开(公告)日：1985-03-12
申请号：US583904
申请日：1984-02-27
CPC分类号： C22B34/36 , B03D1/08 , C22B3/24 , Y02P10/234
摘要： Foaming in the hydrometallurgical treatment of a tungsten-containing aqueous solution due to the presence of carbonaceous organic material impurities, such as flotation reagents, is substantially inhibited by the addition of effective amounts of powdered activated carbon, the carbon with the adsorbed impurities being thereafter separated from the solution by filtering. The activated carbon also protects the solvent extraction circuit from contamination. The method is particularly applicable to slurries of tungsten oxide concentrates during the high temperature, high pressure leaching thereof with sodium carbonate solutions in an autoclave.
摘要翻译： 通过添加有效量的粉末状活性炭，由于存在碳质有机物质杂质（如浮选试剂），在含钨水溶液的湿法冶金处理中发泡，其后吸附的杂质被分离 从解决方案通过过滤。 活性炭还可以保护溶剂萃取回路免受污染。 该方法特别适用于在高压釜中用碳酸钠溶液高温高压浸出的情况下，氧化钨浓缩物的浆料。
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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：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：US4303623A
公开(公告)日：1981-12-01
申请号：US225915
申请日：1981-01-19
摘要： Dissolved molybdenum is removed from sodium tungstate solutions by adding sulfuric acid to lower the pH value of the solution to between about 8 and about 5, adding to the sodium tungstate solution a water-soluble sulfide in an amount of at least 0.5 gram per liter (gpl) in excess of that required to precipitate as sulfides molybdenum and certain other metals, then lowering the pH value of the sodium tungstate solution to between about 4.0 and about 1.5 as rapidly as possible with sulfuric acid in such a way as to precipitate molybdenum trisulfide while minimizing co-precipitation of tungsten.
摘要翻译： 通过加入硫酸将溶解的钼从钨酸钠溶液中除去，将溶液的pH值降低至约8至约5之间，向钨酸钠溶液中加入至少0.5克/升的水溶性硫化物（ gpl）超过硫化物钼和某些其他金属沉淀所需的量，然后使硫酸钠溶液的pH值尽可能快地降低到约4.0和约1.5之间，以使三硫化钼沉淀 同时最小化钨的共沉淀。
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公开(公告)号：US4551314A
公开(公告)日：1985-11-05
申请号：US599127
申请日：1984-04-11
CPC分类号： C22B3/001 , B01D11/0457 , C01G41/003 , Y02P10/234
摘要： A solvent extraction process is provided for transferring metal values from one immiscible liquid phase to another, whereby the two liquid phases are vigorously mixed together in a first mixer under conditions in which one liquid phase is rendered continuous, the mixing being continued to effect complete transfer of metal values, and the mixture then passed to a second mixer and the two phases mixed under conditions in which the other phase is rendered continuous, whereby when the two phases are fed to a settler, the rate of disengagement of the two immiscible liquids is substantially increased.
摘要翻译： 提供了一种溶剂萃取方法，用于将金属值从一个不混溶的液相转移至另一液相，由此两个液相在一个液相连续的条件下在第一混合器中剧烈混合在一起，混合继续进行完全转移 的金属值，然后将混合物送至第二混合器，两相混合，在另一相连续的条件下，当两相进料至沉降器时，两种不混溶液体的脱离速率为 大大增加。
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公开(公告)号：US4338287A
公开(公告)日：1982-07-06
申请号：US225912
申请日：1981-01-19
摘要： A process for conditioning a tungsten concentrate containing tungsten as WO.sub.3, sulfur as sulfide, and calcite to fix at least a portion of the sulfur as calcium sulfate by reaction with the calcite, comprises providing a tungsten concentrate having a calcite content such that less than about 15 wt. % calcium sulfate based on the weight of the WO.sub.3 in the concentrate will be formed and heating the concentrate to a temperature of at least about 500.degree. C. in an oxidizing atmosphere to oxidize substantially all the sulfur in the concentrate to provide a conditioned concentrate having a calcium sulfate content less than about 15% based on the weight of the WO.sub.3, whereby the conditioned concentrate can be efficiently leached with alkali metal carbonates or hydroxides and the resulting alkali metal tungstate solution can be effectively treated to recover an ammonium tungstate solution.
摘要翻译： 一种用于将含钨的钨浓缩物作为WO 3，硫作为硫化物和方解石调节以通过与方解石反应固定硫酸钙的至少一部分硫的方法，包括提供具有方解石含量的少于约 15重量％ 将形成基于浓缩物中WO 3的重量的硫酸钙，并在氧化气氛中将浓缩物加热至至少约500℃的温度，以将浓缩物中的所有硫基本上全部氧化，从而提供具有 基于WO 3的重量计，硫酸钙含量小于约15％，由此可以用碱金属碳酸盐或氢氧化物有效地浸出调理的浓缩物，并且可以有效地处理所得的碱金属钨酸盐溶液以回收钨酸铵溶液。
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公开(公告)号：US4610722A
公开(公告)日：1986-09-09
申请号：US696977
申请日：1985-01-31
CPC分类号： C22B17/04 , C01G9/003 , C22B1/2406 , C22B13/04 , C22B19/22 , C22B19/26 , C22B3/0063 , C22B3/06 , C22B7/02 , Y02P10/216 , Y02P10/234 , Y10S75/961
摘要： A process is provided for hydrometallurgical processing of steel plant dusts containing cadmium, lead, zinc, and iron values, along with impurities such as chloride and fluoride salts of sodium, potassium, magnesium, etc. The first step in the process involves leaching the dust in a mixed sulfate-chloride medium that dissolves most of the zinc and cadmium. Any iron and aluminum dissolved in this step is precipitated by oxidation and neutralization. Zinc is recovered from the resulting solution by solvent extraction which provides a raffinate which is recycled to the leaching step with a bleed stream also provided for recovery of cadmium and removal of other impurities from the circuit. The lead sulfate residue from the leaching step is leached with caustic soda, and zinc dust is used to cement the lead out from the caustic solution, which then joins the main solution for zinc recovery. The residue from the lead leaching step is mixed with iron-aluminum oxide precipitate and agglomerated into pellets using cement. These pellets can be charged into steel furnaces for iron recovery or stored as a nontoxic waste.
摘要翻译： 提供了含有镉，铅，锌和铁价值的钢厂粉尘以及钠，钾，镁等氯化物和氟化物等杂质的湿法冶金加工的方法。该方法的第一步涉及浸出粉尘 在溶解大多数锌和镉的混合硫酸盐 - 氯化物介质中。 在该步骤中溶解的铁和铝通过氧化和中和沉淀。 通过溶剂萃取从所得溶液中回收锌，其提供残液，其提供用于回收镉和从回路中除去其它杂质的排出流再循环至浸出步骤。 来自浸出步骤的硫酸铅残留物用苛性钠浸出，锌粉用于从苛性碱溶液中水解铅，然后将其与主溶液接合以进行锌回收。 来自铅浸出步骤的残渣与铁 - 氧化铝沉淀物混合并用水泥凝聚成颗粒。 这些颗粒可以装入钢铁炉中用于铁回收或作为无毒废物储存。
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公开(公告)号：US07842107B2
公开(公告)日：2010-11-30
申请号：US11486349
申请日：2006-07-13
申请人： Robert F. Hogsett , Philippus J. Meyer , Michael F. Ray , Michael L. Schlegel , Sheldon L. Schultz
发明人： Robert F. Hogsett , Philippus J. Meyer , Michael F. Ray , Michael L. Schlegel , Sheldon L. Schultz
IPC分类号： C10L5/00
CPC分类号： C10L9/06 , B01J8/0065 , B01J2208/00132 , B01J2219/00038 , B01J2219/0004 , C10L9/08 , F28C3/14 , F28D7/00
摘要： Carbonaceous materials are thermally upgraded in a pressurized steam environment to remove moisture and other byproducts. A variety of water/solid separation devices may be employed in a process vessel to maximize moisture removal from the upgraded charge. Heating media inlet nozzles and process chamber vents are strategically positioned at the process vessel wall to minimize short circuiting of heating media to vessel outlet vents and to continuously separate hot water removed from the charge and condensed steam, such that the upgraded material removed from the process vessel is not discharged with accompanying free moisture. After upgrading, the charge may be rehydrated to improve its stability during shipping and storage.
摘要翻译： 碳质材料在加压蒸汽环境中热升级以除去水分和其它副产物。 可以在处理容器中使用各种水/固体分离装置，以使从升级的装料中除去湿度最大化。 加热介质入口喷嘴和处理室通风口在策略上位于过程容器壁处，以最小化加热介质到容器出口通气口的短路，并连续分离从电荷和冷凝蒸汽中除去的热水，使得从过程中除去的升级的材料 船只不伴随自由水分排放。 升级后，充电可以重新水化，以提高运输和储存期间的稳定性。
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公开(公告)号：US20100037516A1
公开(公告)日：2010-02-18
申请号：US12603069
申请日：2009-10-21
申请人： Robert F. Hogsett , Philippus J. Meyer , Michael F. Ray , Michael L. Schlegel , Sheldon L. Schultz
发明人： Robert F. Hogsett , Philippus J. Meyer , Michael F. Ray , Michael L. Schlegel , Sheldon L. Schultz
IPC分类号： C10L5/00
CPC分类号： C10L9/06 , B01J8/0065 , B01J2208/00132 , B01J2219/00038 , B01J2219/0004 , C10L9/08 , F28C3/14 , F28D7/00
摘要： Carbonaceous materials are thermally upgraded in a pressurized steam environment to remove moisture and other byproducts. A variety of water/solid separation devices may be employed in a process vessel to maximize moisture removal from the upgraded charge. Heating media inlet nozzles and process chamber vents are strategically positioned at the process vessel wall to minimize short circuiting of heating media to vessel outlet vents and to continuously separate hot water removed from the charge and condensed steam, such that the upgraded material removed from the process vessel is not discharged with accompanying free moisture. After upgrading, the charge may be rehydrated to improve its stability during shipping and storage.
摘要翻译： 碳质材料在加压蒸汽环境中热升级以除去水分和其它副产物。 可以在处理容器中使用各种水/固体分离装置，以使从升级的装料中除去湿度最大化。 加热介质入口喷嘴和处理室通风口在策略上位于过程容器壁处，以最小化加热介质到容器出口通气口的短路，并连续分离从电荷和冷凝蒸汽中除去的热水，使得从过程中除去的升级的材料 船只不伴随自由水分排放。 升级后，充电可以重新水化，以提高运输和储存期间的稳定性。
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