公开(公告)号：US5178665A

公开(公告)日：1993-01-12

申请号：US649387

申请日：1991-01-30

申请人： Kazi E. Haque

发明人： Kazi E. Haque

IPC分类号： C22B3/44 ,  C22B11/00

CPC分类号： C22B11/04

摘要： A process is disclosed for the direct recovery of gold from cyanide leach liquor, thiourea leach liquor or Bio-D leach liquor. The process comprises reduction precipitation of the gold from solution by the addition of stabilized alkali metal borohydride, preferably sodium, potassium, lithium or ammonium borohydride, at ambient temperature and pressure. High purity gold is obtained by heating the reduced precipitate to about 1200.degree. C. The barren solution is in a condition such that it can be recycled to the upstream process.

摘要翻译： 公开了一种用于从氰化物浸出液，硫脲浸出液或Bio-D浸出液直接回收金的方法。 该方法包括在环境温度和压力下通过加入稳定的碱金属硼氢化物，优选钠，钾，锂或铵硼氢化物，从溶液中还原析出金。 通过将还原的沉淀物加热至约1200℃获得高纯度金。贫溶液处于使其可以再循环到上游方法的条件下。

公开(公告)号：US4374096A

公开(公告)日：1983-02-15

申请号：US62801

申请日：1979-08-01

申请人： James M. Skeaff ,  Gordon M. Ritcey ,  Kazi E. Haque ,  Bernard H. Lucas

发明人： James M. Skeaff ,  Gordon M. Ritcey ,  Kazi E. Haque ,  Bernard H. Lucas

IPC分类号： C01G43/00 ,  C22B3/28 ,  C22B30/04 ,  C22B60/00 ,  C22B60/02 ,  C01F15/00 ,  C01G28/00 ,  C01G49/00

CPC分类号： C22B60/00 ,  C22B3/0012 ,  C22B3/24 ,  C22B3/42 ,  C22B30/04 ,  C22B60/0208 ,  C22B60/023 ,  C22B60/0291 ,  Y02P10/234

摘要： Uranium ores, concentrates, calcines or tailings are processed to remove radium and thorium as well as uranium. Selected ores, concentrates or tailings, or if more appropriate, chlorination calcines thereof, are leached by selected aqueous chlorine-containing media (preferably in two stages) until uranium, radium and thorium are substantially all dissolved, with the insoluble residual solids being suitable for disposal. The leach solution is treated to recover sequentially uranium, usually thorium, and radium by selected techniques. The radium recovered can be disposed of in any environmentally-acceptable manner. The amount of iron in the residual leach liquor should be controlled to avoid iron build-up, with the barren leach solution being suitable for recycle.

摘要翻译： 处理铀矿石，浓缩物，煅烧物或尾矿以除去镭和钍以及铀。 选择的矿石，浓缩物或尾矿，或者如果更合适的话，其氯化煅烧物被选定含水的含氯介质（优选两个阶段）浸出，直到铀，镭和钍基本上全部溶解，其中不溶残余固体适用于 处置。 通过选择的技术处理浸出溶液以依次回收铀，通常为钍和镭。 回收的镭可以以任何环境可接受的方式处理。 应控制残留浸出液中的铁的量，以避免铁堆积，贫瘠浸出溶液适合循环使用。

公开(公告)号：US5091160A

公开(公告)日：1992-02-25

申请号：US608684

申请日：1990-11-05

申请人： Peter D. Kondos ,  Kazi E. Haque ,  John C. MacDonald ,  Wesley F. Griffith ,  Daniel Laforest ,  Joe Iuliano

发明人： Peter D. Kondos ,  Kazi E. Haque ,  John C. MacDonald ,  Wesley F. Griffith ,  Daniel Laforest ,  Joe Iuliano

IPC分类号： B01J19/12 ,  C01F3/02 ,  C22B3/08

CPC分类号： C01F3/02 ,  B01J19/126 ,  C22B3/08 ,  Y02P10/234

摘要： A method of eliminating the foam above a slurry of a corrosive liquid and solid matter where the foam is caused by a gas evolved by the reaction between the heated corrosive liquid and the solid matter comprising providing the heating energy by microwaves. This method has been found to be particularly useful in the sulphuric acid leaching of an ore concentrate in the production of beryllium hydroxide.

摘要翻译： 一种消除在腐蚀性液体和固体物质的浆料上方的泡沫的方法，其中泡沫由通过加热的腐蚀性液体和固体物质之间的反应产生的气体引起，包括通过微波提供加热能量。 已经发现，该方法在生产氢氧化铍中的矿石浓缩物的硫酸浸出中特别有用。