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公开(公告)号：US11572605B2
公开(公告)日：2023-02-07
申请号：US16620011
申请日：2018-06-07
摘要： A process for leaching a mineral particulate material comprising the steps of feeding the mineral particulate material to a leaching step (10) in which at least one valuable metal in the mineral particulate material is leached into a leach solution to form a pregnant leach liquor and a solid residue containing undissolved mineral matter, the leaching step being conducted under conditions such that elemental sulphur is formed in the leaching step, wherein beads or particles that take up elemental sulphur are added to the leaching step such that elemental sulphur is taken up by or collects on the beads or particles, and separating the beads or particles from the pregnant leach liquor and the solid residue. The beads or particles may be treated to remove sulphur and the beads or particles are returned to the leaching step. Alternatively the mineral doesn't need to comprise a soluble component and can be a refractory sulphide of iron and/or arsenic containing precious metals that require oxidation before downstream conventional processes such as cyanidation.
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公开(公告)号：US11111559B2
公开(公告)日：2021-09-07
申请号：US16553825
申请日：2019-08-28
申请人： Ethox Chemicals, LLC
摘要： A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer.
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公开(公告)号：US10927431B2
公开(公告)日：2021-02-23
申请号：US15540225
申请日：2015-12-15
摘要： Embodiments disclosed herein include multilayer films that have at least two layers. More particularly, disclosed in embodiments herein are multilayer films that include at least a first layer and a second layer, wherein the first layer includes at least one polyethylene polymer, wherein the second layer includes at least one water-soluble polymer, wherein the second layer is insoluble in water at a temperature of less than 20° C., wherein the second layer is soluble in water at a temperature of 20° C. or greater, and wherein the first layer has one or more openings through the first layer to expose the second layer. Also disclosed herein are methods of using such multilayer films for extracting metal from metal ore.
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公开(公告)号：US10604821B2
公开(公告)日：2020-03-31
申请号：US15398846
申请日：2017-01-05
申请人： Ethox Chemicals, LLC
摘要： A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer.
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公开(公告)号：US10017837B2
公开(公告)日：2018-07-10
申请号：US14521211
申请日：2014-10-22
CPC分类号： C22B11/08 , C22B3/46 , C22B7/009 , C22B11/048 , Y02P10/214 , Y02P10/234
摘要： This application provides a metallurgical extraction technique, comprising: a) re-pulping a feed filter cake to make a filter cake slurry; b) grinding the filter cake slurry; c) leaching the ground filter cake slurry in a hot alkaline cyanide solution to provide dissolved platinum group metals; d) liquid-solid separating of the dissolved platinum group metals; and e) recovering the dissolved platinum group metals by cementing the dissolved platinum group metals with a precipitating metal comprising an aluminum or a zinc; wherein the feed filter cake has the platinum group metals at a total amount from 0.1 to 1.5 wt % and a halide anion content from zero to less than 4 wt %. This application provides a process for platinum group metal recovery, comprising: converting a catalyst which was in contact with a water reactive ionic liquid catalyst into a non-water reactive filter cake and extracting the platinum group metals.
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公开(公告)号：US20180187286A1
公开(公告)日：2018-07-05
申请号：US15398846
申请日：2017-01-05
申请人： Ethox Chemicals, LLC
CPC分类号： C22B11/08 , C22B3/12 , C22B3/1608 , C22B3/1666 , C22B3/20 , C22B15/0065 , C22B15/0084 , C22B43/00 , C22B60/0247 , C22B60/0252 , Y02P10/234 , Y02P10/236
摘要： A solution for leaching metals from clay containing ore and a method of leaching ore is described. The solution comprises a cyanide; a wetting agent; and a clay stabilizing polymer.
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公开(公告)号：US20170356066A1
公开(公告)日：2017-12-14
申请号：US15539552
申请日：2015-12-04
CPC分类号： C22B11/08 , B01J20/3416 , B01J38/485 , C01B17/033 , C22B3/24 , C22B11/04 , Y02P10/234
摘要： The present invention is intended for effectively removing copper, iron, sulfur, which are impurities, from activated carbon on which gold is adsorbed before gold eluting in the point of view of gold recovery, and is related to a method for eluting gold from an activated carbon on which at least sulfur (S) and gold (Au) are adsorbed, whereas the activated carbon is washed with an alkali solution before eluting the gold, and then the gold is eluted from the activated carbon.
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公开(公告)号：US09694390B1
公开(公告)日：2017-07-04
申请号：US15262387
申请日：2016-09-12
申请人： Masataka Tsutsumi
发明人： Masataka Tsutsumi
IPC分类号： D01G23/08 , B07B1/22 , B01D33/46 , B01D33/11 , B01D33/76 , B01D33/80 , C22B3/00 , C22B11/08 , C22B3/22 , C22B3/12 , C22B3/16 , B07B1/55 , B07B1/42
摘要： An apparatus for separating carbon or resin from slurry. The apparatus comprises a frame, a rotary cage screen assembly, a cage screen support and rotary drive system, a carbon collection assembly and a hopper moveably connected to the rotary cage screen assembly. The apparatus is positional partially within an adsorption tank or other container capable of containing slurry.
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公开(公告)号：US20160083816A1
公开(公告)日：2016-03-24
申请号：US14856277
申请日：2015-09-16
申请人： Ecolab USA Inc.
发明人： Ronald V. Davis , Daniel E. Child , Walter Gerlach
摘要： A method of recovering gold from refractory ore containing a carbonaceous material, a sulfide and gold is provided. Gypsum seed crystals are added to a slurry containing a roasted refractory ore or a pressure-oxidized refractory ore to decrease gypsum encapsulation of gold and improve gold recovery.
摘要翻译： 提供了一种从含有碳质材料，硫化物和金的难熔矿中回收金的方法。 将石膏晶体加入到含有耐火矿石或压力氧化的耐火矿石的浆料中，以减少黄金的石膏封装并改善黄金回收率。
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10.发明授权公开(公告)号：US08673055B2
公开(公告)日：2014-03-18
申请号：US13201872
申请日：2010-03-04
申请人： Bomi P Framroze
发明人： Bomi P Framroze
摘要： The invention provides a novel process for improving the recovery of precious metals from recalcitrant refractory ores by the use of hydrofluoric acid dissolved in ionic liquids. The solution of hydrogen fluoride gas in an ionic liquid is contacted with dry crushed ore at a temperature and for a period of time commensurate with the fracturing of a specific recalcitrant refractory ore. The excess ionic liquid is separated from the ore and the fractured ore is further treated with dilute sodium cyanide solution to extract precious metals in greater yields.
摘要翻译： 本发明提供了一种通过使用溶解在离子液体中的氢氟酸来改善贵重金属从顽固耐火矿石中回收的新方法。 在离子液体中的氟化氢气体的溶液与干压碎矿石在特定顽固耐火矿石的压裂温度和时间相接触的时间内接触。 从矿石中分离出过量的离子液体，用稀释的氰化钠溶液进一步处理断裂的矿石，以更高的产率提取贵金属。
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