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1. 发明授权

US6026965A Process for recovering mineral particles, metal particles or small precious stones from an aqueous slim associated with an ore body or mineral deposit or processing thereof 失效
标题翻译：从与矿体或矿物沉积物相关的水性苗条或其处理中回收矿物颗粒，金属颗粒或小宝石的方法
公开(公告)号：US6026965A
公开(公告)日：2000-02-22
申请号：US275976
申请日：1999-03-25
申请人： Roberto Berardi , David Krofchak , Peter A. C. A. Howe , David M. Howe
发明人： Roberto Berardi , David Krofchak , Peter A. C. A. Howe , David M. Howe
IPC分类号： B03B1/00 , B03B1/04 , B03B5/28 , B03D3/06
CPC分类号： B03B1/04 , B03B5/28 , B03D3/06 , C22B11/04 , Y10S209/902
摘要： A process for recovering mineral particles, metal particles or small precious stones from an aqueous slime associated with an ore body or mineral deposit or processing thereof, said aqueous slime containing mineral particles, metal particles or small precious stones in suspension with slime particles. The process includes adding a sufficient amount of deflocculating agent to the aqueous slime to cause deflocculation of the slime particles and produce a deflocculated suspension containing the mineral particles, metal particles or small precious stones. The deflocculated suspension is allowed to settle, and the settled material containing the mineral particles, metal particles or small precious stones is recovered.
摘要翻译：从与矿体或矿物沉积物或其加工物相关的水性粘土中回收矿物颗粒，金属颗粒或小宝石的方法，所述含水泥液含有矿物颗粒，金属颗粒或与粘泥颗粒悬浮的小宝石。该方法包括向含水泥液中加入足够量的抗絮凝剂以引起粘泥颗粒的絮凝，并产生含有矿物颗粒，金属颗粒或小宝石的抗絮凝悬浮液。使絮凝的悬浮液沉降，并回收含有矿物颗粒，金属颗粒或小宝石的沉降物质。

2. 发明授权

US06440194B1 Recovery of precious metals from metal alloys produced aluminothermically from base metal smelter slag 失效
标题翻译：从金属冶炼炉渣中回收从铝合金制成的贵金属
公开(公告)号：US06440194B1
公开(公告)日：2002-08-27
申请号：US09716425
申请日：2000-11-21
申请人： David Krofchak , Roberto Berardi
发明人： David Krofchak , Roberto Berardi
IPC分类号： C22B308
CPC分类号： C22B7/04 , C22B3/08 , C22B11/023 , Y02P10/214 , Y02P10/234
摘要： A method of recovering precious metals from metal alloys produced aluminothermically from base metal smelter slag, includes treating the metal alloy with aqueous sulphuric acid solution having a pH of not greater than about 2 to cause dissolution of nickel and/or cobalt and iron and to cause formation of hydrogen sulfide which reacts with copper in the metal alloy to form a copper sulfide precipitate containing at least one precious metal, and separating the copper sulphide precipitate containing at least one precious metal from the remaining solution containing cobalt sulphate and/or nickel sulphate and ferrous sulphate.
摘要翻译：从金属冶炼炉渣铝热回收的金属合金中回收贵金属的方法包括用pH不大于约2的硫酸水溶液处理金属合金，引起镍和/或钴和铁的溶解并引起形成硫化氢，其与金属合金中的铜反应形成含有至少一种贵金属的硫化铜沉淀物，以及从含有硫酸钴和/或硫酸镍的剩余溶液中分离含有至少一种贵金属的硫化铜沉淀物，以及硫酸亚铁。

3. 发明授权

US06231767B1 Treatment of phosphatic wastes 失效
标题翻译：处理磷酸盐废物
公开(公告)号：US06231767B1
公开(公告)日：2001-05-15
申请号：US09250151
申请日：1999-02-16
申请人： David Krofchak , Roberto Berardi
发明人： David Krofchak , Roberto Berardi
IPC分类号： C02F100
CPC分类号： C04B7/24 , B03B9/061 , C04B18/0481 , C05B11/08 , C05B17/00 , Y02P40/145 , Y02W30/91 , Y10S210/906 , Y10S210/907 , C04B20/02
摘要： A process for treating thickened phosphatic clay suspensions, waste clay and phosphogypsum produced in the processing of phosphate ore by water beneficiation and chemical processing, the thickened phosphatic clay suspension having a solid content of from about 4 to about 40 percent by weight, includes mixing a sufficient amount of deflocculating agent with a thickened phosphatic clay suspension to cause deflocculation of the suspension to an extent sufficient to reduce the viscosity thereof to a value enabling the deflocculated suspension to be readily pumped from one location to another, the deflocculating agent comprising an alkali compound of a phosphorus oxide. The deflocculated suspension of reduced viscosity is pumped from one location to another and separated into a clay suspension and a phosphatic mineral and sand suspension. The non-clay minerals are dissolved in the phosphatic mineral and sand suspension in dilute sulfuric acid to separate a phosphatic fraction as phosphoric acid from a sand fraction. A cementitious material is produced by heating clay, phosphogypsum and sand in a kiln, and the cementitious material is mixed with the clay suspension and the sand fraction in an amount sufficient to cause the formation of large silicate molecules with resultant gelling and setting of the suspensions into an inert solid material.
摘要翻译：一种处理通过水精选和化学处理在磷酸盐矿石加工中产生的增稠的磷酸钙粘土悬浮液，废粘土和磷石膏的方法，固体含量为约4至约40重量％的增稠的磷酸粘土悬浮液包括混合足够量的具有增稠的磷酸钙粘土悬浮液的抗絮凝剂以使悬浮液的抗絮凝程度足以将其粘度降低到能够使絮凝的悬浮液容易地从一个位置泵送到另一个位置的值，所述抗絮凝剂包含碱性化合物的磷氧化物。降低粘度的絮凝悬浮液从一个位置泵送到另一个位置，并分离成粘土悬浮液和磷矿物和砂悬浮液。将非粘土矿物质溶解在稀硫酸中的磷酸矿物和砂悬浮液中，以从磷砂中分离磷酸盐级分。通过在窑中加热粘土，磷石膏和砂子来生产水泥材料，并且将水泥质材料与粘土悬浮液和沙子组分混合，其量足以引起大的硅酸盐分子的形成，从而形成胶凝和凝固悬浮液成为惰性固体材料。

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