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1.发明授权In-situ treatment of waste stacks, soils or earth materials to immobilize metals contained therein 失效废物堆，土壤或土壤材料的原位处理，以固定其中所含的金属
公开(公告)号：US5710361A
公开(公告)日：1998-01-20
申请号：US772174
申请日：1996-12-18
CPC分类号： B09C1/10 , B09B1/00 , B09C1/08 , B09C2101/00
摘要： A process for in situ immobilization of metals in waste stack affected zones including a waste stack and any adjacent boundary zone. One form of the process includes: (a) forming at least one treatment passageway which extends within the waste stack affected zone; (b) injecting a treatment liquid into the treatment passageway; said treatment liquid including at least one microbe nutrient which is capable of sustaining activity of the at least one microbe; (c) providing at least one microbe in sufficient proximity to the treatment passageway to receive treatment liquid therefrom; said at least one microbe being capable of growing in the presence of said treatment liquid; said at least one microbe also being capable of producing microbial sulfides which are sulfide by-products of microbial activity in the waste stack affected zone; (d) reacting the microbial sulfides in situ with metal ions or metal-containing compounds contained in said waste stack affected zone to form metal sulfides; (e) reducing solubility of the metal ions or metal-containing compounds contained in the waste stack affected zone as a result of forming the metal sulfides; and (f) inhibiting the migration rate of metal ions or metal-containing compounds within or from the waste stack affected zone.
摘要翻译： 在废物堆叠影响区域中原位固定金属的方法，包括废物堆叠和任何相邻的边界区域。 该方法的一种形式包括：（a）形成在废物堆叠影响区域内延伸的至少一个处理通道; （b）将处理液注入治疗通道; 所述处理液体包括能够维持至少一种微生物活性的至少一种微生物营养物质; （c）提供足够接近治疗通道的至少一个微生物以从其接收治疗液体; 所述至少一种微生物能够在所述处理液体存在下生长; 所述至少一种微生物还能够产生微生物硫化物，所述微生物硫化物是废物堆影响区的微生物活性的硫化物副产物; （d）将微生物硫化物原位与包含在所述废物堆叠影响区中的金属离子或含金属化合物反应形成金属硫化物; （e）由于形成金属硫化物，降低了包含在废物堆叠影响区域中的金属离子或含金属化合物的溶解度; 和（f）抑制废物堆叠影响区内或从废物堆叠影响区域内的金属离子或含金属化合物的迁移速率。
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公开(公告)号：US4511541A
公开(公告)日：1985-04-16
申请号：US446362
申请日：1982-12-02
CPC分类号： C22B3/0064 , C01G11/003 , C01G39/003 , C01G53/003 , C01G9/003 , C22B3/007 , Y02P10/234
摘要： A process for the selective recovery of cadmium, molybdenum, zinc, nickel and other metal values from wet process phosphoric acid and other acidic to slightly basic carrier solutions, wherein the metal-bearing solution is contacted with an organophosphene extractant to precipitate the metal values for subsequent separation from the solution. Separation may be effected by mechanical means or by scrubbing with a water-immiscible organic solvent such as kerosene for subsequent recovery of the metal values. The metal specie recovered is determined by the concentration of the organophosphene, which may be selectively adjusted to recover a series of metal values in a sequence of stages.
摘要翻译： 从湿法磷酸和其他酸性至微碱性载体溶液中选择性回收镉，钼，锌，镍和其他金属值的方法，其中使含金属溶液与有机膦萃取剂接触以沉淀金属值 随后与溶液分离。 分离可以通过机械方法进行或通过与水不混溶的有机溶剂如煤油洗涤以随后回收金属值。 回收的金属物质可以通过有机聚合物的浓度来确定，有机聚合物的浓度可以选择性地调整，以便在一个阶段中回收一系列的金属值。
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公开(公告)号：US4367197A
公开(公告)日：1983-01-04
申请号：US238061
申请日：1981-03-02
申请人： Gary L. Long , Roger B. Humberger
发明人： Gary L. Long , Roger B. Humberger
IPC分类号： C01B25/225 , C01B25/226 , C23F11/04
CPC分类号： C01B25/226 , C01B25/225 , C23F11/04
摘要： Methods for control of excessive corrosion in wet process phosphoric circuits are effected by oxidation of reduced ion species in the acid with maintenance of EMF value of the acid above about 190 millivolts (S.C.E. reference) through the digestion circuit. Supplementary monitoring is by a ceric red-ox titration procedure. In one embodied form, the present invention is utilized to control corrosion in a phosphoric acid plant digestion system (and subsequent processing equipment) operating by a dihydrate (gypsum) process even when such a process employs a calcined western U.S. phosphate ore feed from a relatively highly carbonaceous ore. The invention is also applicable for treating wet process phosphoric acid in phosphoric acid plants having a digester system operating by a hemihydrate process. In a presently preferred embodiment, additions of manganese dioxide to a primary digester in a sufficient amount effective to achieve an EMF value over about 190 millivolts will significantly control the occurrence of excessive corrosion in phosphoric acid circuits. In yet another preferred embodiment, an oxygen autoclave oxidation is used to oxidize the reduced ion species present in the acid to inhibit corrosion.
摘要翻译： 用于控制湿法磷酸回路中过度腐蚀的方法是通过在酸中氧化还原的离子物质来实现的，其中通过消化回路维持高于约190毫伏（S.C.E.参考）的酸的EMF值。 补充监测是通过氧化铈滴定法。 在一个实施形式中，本发明用于控制在二水合物（石膏）方法中操作的磷酸设备消化系统（和随后的加工设备）中的腐蚀，即使这种方法使用来自相对的 高含碳矿石。 本发明也适用于在具有通过半水合法处理的蒸煮器系统的磷酸设备中处理湿法磷酸。 在目前优选的实施方案中，以足以实现大约190毫伏的EMF值的足够量的一次蒸煮器添加二氧化锰将显着控制磷酸回路中过度腐蚀的发生。 在另一个优选的实施方案中，使用氧气高压釜氧化来氧化存在于酸中的还原离子种类以抑制腐蚀。
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4.发明授权In situ immobilization of metals in waste stacks and waste stack affected zones 失效在废物堆栈和废物堆叠影响区域中原位固定金属
公开(公告)号：US5632715A
公开(公告)日：1997-05-27
申请号：US573230
申请日：1995-12-15
CPC分类号： B09C1/10 , B09B1/00 , B09C1/08 , B09C2101/00
摘要： A process for in situ immobilization of metals in waste stack affected zones including a waste stack and any adjacent boundary zone. One form of the process includes: (a) forming at least one treatment passageway which extends within the waste stack affected zone; (b) injecting a treatment liquid into the treatment passageway; said treatment liquid including at least one microbe nutrient which is capable of sustaining activity of the at least one microbe; (c) providing at least one microbe in sufficient proximity to the treatment passageway to receive treatment liquid therefrom; said at least one microbe being capable of growing in the presence of said treatment liquid; said at least one microbe also being capable of producing microbial sulfides which are sulfide by-products of microbial activity in the waste stack affected zone; (d) reacting the microbial sulfides in situ with metal ions or metal-containing compounds contained in said waste stack affected zone to form metal sulfides; (e) reducing solubility of the metal ions or metal-containing compounds contained in the waste stack affected zone as a result of forming the metal sulfides; and (f) inhibiting the migration rate of metal ions or metal-containing compounds within or from the waste stack affected zone.
摘要翻译： 在废物堆叠影响区域中原位固定金属的方法，包括废物堆叠和任何相邻的边界区域。 该方法的一种形式包括：（a）形成在废物堆叠影响区域内延伸的至少一个处理通道; （b）将处理液注入治疗通道; 所述处理液体包括能够维持至少一种微生物活性的至少一种微生物营养物质; （c）提供足够接近治疗通道的至少一个微生物以从其接收治疗液体; 所述至少一种微生物能够在所述处理液体存在下生长; 所述至少一种微生物还能够产生微生物硫化物，所述微生物硫化物是废物堆影响区的微生物活性的硫化物副产物; （d）将微生物硫化物原位与包含在所述废物堆叠影响区中的金属离子或含金属化合物反应形成金属硫化物; （e）由于形成金属硫化物，降低了包含在废物堆叠影响区域中的金属离子或含金属化合物的溶解度; 和（f）抑制废物堆叠影响区内或从废物堆叠影响区域内的金属离子或含金属化合物的迁移速率。
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公开(公告)号：US4883586A
公开(公告)日：1989-11-28
申请号：US208170
申请日：1988-06-16
摘要： Ores containing mineral values are separated into two slurries, one having primarily fine particles and gangue and the other having primarily coarse particles. The slurry having fine particles and gangue is adjusted to a solids content of less than about 15 percent, as necessary, and then conditioned by the addition of appropriate promoter reagents, a flotation collector, and a froth modifier. The gangue, containing a disproportionate share of impurities, is floated in a column flotation cell wherein the fine particulates are not mechanically agitated, and removed. The remaining fine particulate underflow, containing a disproportionate share of the minearl values, is then processed directly, or combined with the slurry containing the coarse particulate to yield a flow having reduced impurity content and increased recovery of the mineral values.
摘要翻译： 含有矿物质的矿石被分成两个浆料，一个具有主要的细颗粒和脉石，另一个具有主要的粗颗粒。 根据需要，将具有细颗粒和脉石的浆料调节至小于约15％的固体含量，然后通过加入合适的助催化剂，浮选收集器和泡沫改性剂进行调理。 含有不相称的杂质份额的g石漂浮在柱浮选池中，其中细颗粒不被机械搅拌和除去。 然后，将含有不相称份数的矿砂值的剩余的细颗粒下溢直接加工，或与含有粗颗粒的浆料混合，产生杂质含量降低且矿物质回收率提高的流程。
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公开(公告)号：US4277454A
公开(公告)日：1981-07-07
申请号：US76574
申请日：1979-09-18
申请人： Gary L. Long , Roger B. Humberger
发明人： Gary L. Long , Roger B. Humberger
IPC分类号： C01B25/225 , C01B25/226 , C23F11/04
CPC分类号： C01B25/226 , C01B25/225 , C23F11/04
摘要： Methods for control of excessive corrosion in wet process phosphoric circuits are effected by oxidation of reduced ion species in the acid with maintenance of EMF value of the acid above about 190 millivolts (S.C.E. reference) through the digestion circuit. Supplementary monitoring is by a ceric red-ox titration procedure. In one embodied form, the present invention is utilized to control corrosion in a phosphoric acid plant digestion system (and subsequent processing equipment) operating by a dihydrate (gypsum) process even when such a process employs a calcined western U.S. phosphate ore feed from a relatively highly carbonaceous ore. The invention is also applicable for treating wet process phosphoric acid in phosphoric acid plants having a digester system operating by a hemihydrate process. In a presently preferred embodiment, additions of manganese dioxide to a primary digester in a sufficient amount effective to achieve an EMF value over about 190 millivolts will significantly control the occurrence of excessive corrosion in phosphoric acid circuits. In yet another preferred embodiment, an oxygen autoclave oxidation is used to oxidize the reduced ion species present in the acid to inhibit corrosion.
摘要翻译： 用于控制湿法磷酸回路中过度腐蚀的方法是通过在酸中氧化还原的离子物质来实现的，并通过消化回路维持高于约190毫伏（S.C.E.参考）的酸的EMF值。 补充监测是通过氧化铈滴定法。 在一个实施形式中，本发明用于控制在二水合物（石膏）方法中操作的磷酸设备消化系统（和随后的加工设备）中的腐蚀，即使这种方法使用来自相对的 高含碳矿石。 本发明也适用于在具有通过半水合法处理的蒸煮器系统的磷酸设备中处理湿法磷酸。 在目前优选的实施方案中，以足以实现大约190毫伏的EMF值的足够量的一次蒸煮器添加二氧化锰将显着控制磷酸回路中过度腐蚀的发生。 在另一个优选的实施方案中，使用氧气高压釜氧化来氧化存在于酸中的还原离子种类以抑制腐蚀。
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