公开(公告)号：US06730279B2

公开(公告)日：2004-05-04

申请号：US09852207

申请日：2001-05-09

申请人： Robert W. Balliett ,  Wolfgang Kummer ,  John E. Litz ,  Lawrence F. McHugh ,  Harry H. K. Nauta ,  Paul B. Queneau ,  Rong-Chien Wu

发明人： Robert W. Balliett ,  Wolfgang Kummer ,  John E. Litz ,  Lawrence F. McHugh ,  Harry H. K. Nauta ,  Paul B. Queneau ,  Rong-Chien Wu

IPC分类号： C01G3900

CPC分类号： C01G39/003 ,  C01G39/02

摘要： High purity ammonium dimolybdate or molybdenum oxide is produced by the pressure oxidation of low grade molybdenite concentrates or molybdenum intermediates. The process entails nearly complete oxidation of the sulfide minerals while optimizing the process chemistry and autoclave conditions to solubilize as little of the molybdenum values as possible. The autoclave discharge 12 is then subjected to a leaching step, either an alkaline leach 50, 400 or ammonium leach 250 process, before or after a liquid/solid separation step 20, 220, 410. The solution is then subjected to (a) filtration 60, 410, solvent extraction 70, 440, crystallization 90,450, and calcination 120, 480 or (b) filtration 260, 280, crystallization 290, and calcination 320 to produce a product suitable for chemical-grade molybdenum oxide 125, 325, 485.

摘要翻译： 通过低品位辉钼矿浓缩物或钼中间体的压力氧化产生高纯度的二钼酸铵或氧化钼。 该过程需要几乎完全硫化矿物氧化，同时优化工艺化学和高压釜条件以溶解尽可能少的钼值。 然后在液体/固体分离步骤20,220,410之前或之后对高压釜排出口12进行浸出步骤，碱浸液50,400或铵浸出250处理。然后将溶液进行（a）过滤 60,410，溶剂萃取70,440，结晶90,450和煅烧120,480或（b）过滤260,280，结晶290和煅烧320以产生适合于化学级氧化钼125,325,485的产物。

公开(公告)号：US06818191B2

公开(公告)日：2004-11-16

申请号：US09851920

申请日：2001-05-09

申请人： John E. Litz ,  Paul B. Queneau ,  Rong-Chien Wu

发明人： John E. Litz ,  Paul B. Queneau ,  Rong-Chien Wu

IPC分类号： C22B300

CPC分类号： C22B34/34 ,  C01G39/02 ,  C22B3/02 ,  Y02P10/234

摘要： The process chemistry during the oxidation of molybdenite concentrates in an oxygen pressure leach can be controlled by regulating the amount of ferric iron and excess sulfuric acid recycled as autoclave discharge slurry or filtrate to the autoclave feed. A computer model capable of predicting the concentration of soluble molybdenum in the autoclave discharge and based on the concentrate and recycle analyses was developed.

摘要翻译： 在氧压力浸出中辉钼矿浓缩氧化过程中的过程化学性质可以通过调节作为高压釜排出浆液或滤液再循环到高压釜进料中的三价铁和过量硫酸的量来控制。 开发了能够预测高压釜排出物中可溶性钼的浓度并基于浓缩物和再循环分析的计算机模型。

公开(公告)号：US20050019247A1

公开(公告)日：2005-01-27

申请号：US10477080

申请日：2001-09-26

申请人： Robert Balliett ,  Wolfgang Kummer ,  John Litz ,  Lawrence MHugh ,  Harry Nauta ,  Paul Queneau ,  Rong-Chien Wu

发明人： Robert Balliett ,  Wolfgang Kummer ,  John Litz ,  Lawrence MHugh ,  Harry Nauta ,  Paul Queneau ,  Rong-Chien Wu

IPC分类号： C01G39/00 ,  C01G39/02 ,  C22B3/14 ,  C22B3/26 ,  C22B3/44 ,  C22B34/34

CPC分类号： C22B3/14 ,  C01G39/003 ,  C01G39/02 ,  C01P2006/80 ,  C22B3/0005 ,  C22B3/44 ,  C22B34/34 ,  Y02P10/234

摘要： High purity ammonium dimolybdate or molybdenum oxide is produced by the pressure oxidation of low grade molybdenite concentrates or molybdenum intermediates. The process entails nearly complete oxidation of the sulfide minerals while optimizing the process chemistry and autoclave conditions to solubilize as little of the molybdenum values as possible. The autoclave discharge 12 is then subjected to a leaching step, either an alkaline leach 50, 400 or ammonium leach 250 process, before or after a liquid/solid separation step 20, 220, 410. The solution is then subjected to (a) filtration 60, 410, solvent extraction 70, 440, crystallization 90, 450, and calcination 120, 480 or (b) filtration 260, 280, crystallization 290, and calcination 320 to produce a product suitable for chemical-grade molybdenum oxide 125, 325, 485.

摘要翻译： 通过低品位辉钼矿浓缩物或钼中间体的压力氧化产生高纯度的二钼酸铵或氧化钼。 该过程需要几乎完全硫化矿物氧化，同时优化工艺化学和高压釜条件以溶解尽可能少的钼值。 然后在液体/固体分离步骤20,220,410之前或之后对高压釜排出口12进行浸出步骤，碱浸液50,400或铵浸出250处理。然后将溶液进行（a）过滤 60,410，溶剂萃取70,440，结晶90,450和煅烧120,480或（b）过滤260,280，结晶290和煅烧320以产生适合于化学级氧化钼125,325的产物， 485。