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1. 发明授权

US4604266A Process for purifying molybdenum trioxide 失效
标题翻译：纯化三氧化钼的方法
公开(公告)号：US4604266A
公开(公告)日：1986-08-05
申请号：US716727
申请日：1985-03-27
申请人： Michael J. Cheresnowsky , Timothy A. Brunelli , Robin W. Munn , Tai K. Kim
发明人： Michael J. Cheresnowsky , Timothy A. Brunelli , Robin W. Munn , Tai K. Kim
IPC分类号： C01G3/00 , C01G3/12 , C01G39/00 , C01G45/00 , C01G53/00
CPC分类号： C01G3/12 , C01G3/003 , C01G39/00 , C01G45/003 , C01G53/003 , C22B3/42 , Y02P10/234
摘要： Processes are described for preparing pure ammonium molybdate from impure roasted molybdenum concentrates. An aqueous solution of nitric acid and ammonium nitrate is contacted with impure molybdenum concentrate to solubilize a major portion of the impurities. The resulting molybdenum concentrate is digested in ammonium hydroxide under conditions that maximize iron precipitation and removal. The resulting ammonium molybdate solution is separated from the sludge and further purified by chelating cation exchange resin in the ammonium form.
摘要翻译：描述了从不纯的焙烧钼精矿制备纯钼酸铵的方法。将硝酸和硝酸铵的水溶液与不纯的钼浓缩物接触以溶解大部分杂质。所得的钼精矿在氢氧化铵中在使铁沉淀和除去最大化的条件下消化。将所得的钼酸铵溶液与污泥分离，并通过铵形式的螯合阳离子交换树脂进一步纯化。

2. 发明授权

US4525331A Process for purifying molybdenum trioxide 失效
公开(公告)号：US4525331A
公开(公告)日：1985-06-25
申请号：US584843
申请日：1984-02-24
申请人： Michael J. Cheresnowsky , Timothy A. Brunelli , Robin W. Munn , Tai K. Kim
发明人： Michael J. Cheresnowsky , Timothy A. Brunelli , Robin W. Munn , Tai K. Kim
IPC分类号： C01G3/00 , C01G3/12 , C01G39/00 , C01G45/00 , C01G53/00
CPC分类号： C01G3/12 , C01G3/003 , C01G39/00 , C01G45/003 , C01G53/003 , C22B3/42 , Y02P10/234
摘要： Processes are described for preparing pure ammonium molybdate from impure roasted molybdenum concentrates. An aqueous solution of nitric acid and ammonium nitrate is contacted with impure molybdenum concentrate to solubilize a major portion of the impurities. The resulting molybdenum concentrate is digested in ammonium hydroxide under conditions that maximize iron precipitation and removal. The resulting ammonium molybdate solution is separated from the sludge and further purified by chelating cation exchange resin in the ammonium form.

3. 发明授权

US4702895A Purification of molybdenum 失效
标题翻译：钼的净化
公开(公告)号：US4702895A
公开(公告)日：1987-10-27
申请号：US859290
申请日：1986-05-02
申请人： Michael J. Cheresnowsky , Timothy A. Brunelli , Tai K. Kim
发明人： Michael J. Cheresnowsky , Timothy A. Brunelli , Tai K. Kim
IPC分类号： C01F5/00 , C01G39/00
CPC分类号： C01G39/00 , C01F5/00
摘要： A method is disclosed for purifying molybdenum which involves adding to an ammoniacal ammonium molybdate solution containing the impurities of phosphorus and arsenic with the phosphorus concentration being from about 0.01 to about 0.12 g/l, a soluble magnesium salt to form a precipitate comprising magnesium ammonium salts of the phosphorus and arsenic, and to form a purified ammonium molybdate solution. The amount of the magnesium salt is sufficient to result in a concentration of from about 0.005 to about 0.04 moles/l in the ammoniacal ammonium molybdate solution. The resulting purified ammonium molybdate contains no greater than about 0.01 g P/l. The precipitate is separated from the purified solution which is then contacted with a chelating cation exchange resin supplying a sufficient amount of a cation to result in removal of the major portion of the magnesium ions from the purified solution and form a further purified ammonium molybdate solution.
摘要翻译：公开了一种用于纯化钼的方法，其涉及将磷浓度为约0.01至约0.12g / l的含有磷和砷的杂质的钼酸铵溶液加入到可溶性镁盐中以形成包含镁铵盐的沉淀物的磷和砷，并形成纯化的钼酸铵溶液。镁盐的量足以导致氨基钼酸铵溶液中浓度约为0.005至0.04摩尔/升。得到的纯化钼酸铵含有不大于约0.01g P / l。从纯化溶液中分离出沉淀物，然后与提供足量阳离子的螯合阳离子交换树脂接触，导致从纯化溶液中除去大部分的镁离子并形成另外的纯化的钼酸铵溶液。

4. 发明授权

US4643884A Purification of molybdenum trioxide 失效
标题翻译：三氧化钼的纯化
公开(公告)号：US4643884A
公开(公告)日：1987-02-17
申请号：US846170
申请日：1986-03-31
申请人： Michael J. Cheresnowsky , Timothy A. Brunelli , Robin W. Munn
发明人： Michael J. Cheresnowsky , Timothy A. Brunelli , Robin W. Munn
IPC分类号： C01G39/02
CPC分类号： C01G39/02 , C01P2006/80
摘要： A process is disclosed for removing potassium from relatively impure molybdenum trioxide. The process involves contacting the impure molybdenum trioxide containing greater than about 600 weight parts potassium per million with a first acid leach which consists essentially of nitric acid and ammonium nitrate at a temperature of at least about 50.degree. C. for a sufficient time and at above a 2 molar concentration of said nitric acid and an ammonium nitrate concentration of from about 1.5 to about 2 molar in said first acid leach to solubilize the major portion of the potassium and form a once leached molybdenum trioxide containing the remaining portion of the potassium which is separated from the resulting potassium containing acid leach and contacted with a second leach solution substantially similar to the first acid leach followed by separating the resulting twice leached molybdenum trioxide from the resulting potassium containing second leach. The twice leached molybdenum trioxide is contacted with sufficient water to remove any residual impurities followed by removal of the resulting wash water.
摘要翻译：公开了从相对不纯的三氧化钼中除去钾的方法。该方法包括使含有大于约600重量份百万分之比的钾的不纯三氧化钼与至少约50℃的温度下基本上由硝酸和硝酸铵组成的第一酸浸液接触足够的时间和在上述在所述第一酸浸液中，所述硝酸浓度为2摩尔浓度，硝酸铵浓度为约1.5至约2摩尔，以溶解钾的主要部分，并形成含有剩余部分钾的一次浸出的三氧化钼与所得的含钾酸浸出物分离，并与基本上类似于第一酸浸提液的第二浸出溶液接触，随后从得到的含钾第二浸出物中分离得到的两次浸提的三氧化钼。将两次浸提的三氧化钼与足够的水接触以除去任何残余杂质，然后除去所得洗涤水。

5. 发明授权

US4612172A Purification of molybdenum 失效
标题翻译：钼的净化
公开(公告)号：US4612172A
公开(公告)日：1986-09-16
申请号：US704685
申请日：1985-02-22
申请人： Timothy A. Brunelli , Michael J. Cheresnowsky
发明人： Timothy A. Brunelli , Michael J. Cheresnowsky
IPC分类号： C01G39/00
CPC分类号： C01G39/00
摘要： A process is disclosed for removing potassium from a relatively impure molybdenum trioxide and forming a molybdenum compound of high purity. The process involves first contacting the impure molybdenum trioxide with an acid leach which consists essentially of a mineral acid and the ammonium salt of the mineral acid in a weight ratio of above about 3 to 1 of acid leach to molybdenum trioxide at a sufficient temperature and for a sufficient time to solubilize the major portion of the potassium and form a leached molybdenum trioxide, followed by separating the leached molybdenum trioxide from the resulting potassium containing acid leach. The leached molybdenum trioxide is then water washed to remove residual impurities and the washed molybdenum trioxide is dissolved in ammonium hydroxide having an ammonium concentration sufficient to form an ammonium molybdate solution from which is crystallized the highly pure molybdenum compound.
摘要翻译：公开了从相对不纯的三氧化钼中除去钾并形成高纯度的钼化合物的方法。该方法包括首先使不纯的三氧化钼与酸浸出物接触，所述酸浸液基本上由无机酸和无机酸的铵盐以高于约3:1的酸浸出物与足够温度的三氧化钼浸出足够的时间溶解钾的主要部分并形成浸出的三氧化钼，然后从所得的含钾酸浸液中分离浸出的三氧化钼。然后将浸出的三氧化钼水洗以除去残留的杂质，并将经洗涤的三氧化钼溶解在铵浓度足以形成钼酸铵溶液的氢氧化铵中，从而使高度纯的钼化合物结晶。

6. 发明授权

US4595412A Production of molybdenum metal 失效
标题翻译：生产钼金属
公开(公告)号：US4595412A
公开(公告)日：1986-06-17
申请号：US757393
申请日：1985-07-22
申请人： Timothy A. Brunelli , Keith E. Landmesser
发明人： Timothy A. Brunelli , Keith E. Landmesser
IPC分类号： B22F9/22 , C22B5/12 , C22B34/34 , B22F9/00
CPC分类号： B22F9/22 , C22B34/34 , C22B5/12
摘要： A process is disclosed for producing molybdenum metal from an ammonium molybdate salt. The process involves heating the salt in a reducing atmosphere at a temperature of no greater than about 775.degree. C. for a sufficient time to convert the major portion of the salt to molybdenum dioxide, and heating the molybdenum dioxide in a reducing atmosphere at a temperature of no greater than about 1095.degree. C. to convert the major portion of the molybdenum dioxide to molybdenum metal.
摘要翻译：公开了一种从钼酸铵盐生产钼金属的方法。该方法包括在不大于约775℃的温度下在还原气氛中加热盐足够的时间以将盐的主要部分转化为二氧化钼，并在还原气氛中在温度下加热二氧化钼不大于约1095℃，以将主要部分的二氧化钼转化为钼金属。

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