公开(公告)号：US4330508A

公开(公告)日：1982-05-18

申请号：US200126

申请日：1980-10-24

Applicant: Donald R. Weir ,  Derek G. E. Kerfoot ,  Hugh C. Scheie

Inventor： Donald R. Weir ,  Derek G. E. Kerfoot ,  Hugh C. Scheie

IPC: C01G3/10 ,  C01B19/00 ,  C01B19/04

CPC classification number: C01B19/001

Abstract: A process for removing dissolved selenium IV values from an acidic aqueous copper sulphate solution includes passing the solution through a tubular member in a plug flow manner and injecting sulphur dioxide or a sulphite solution into the solution as it enters the tubular member. When the sulphate solution also contains dissolved selenium (VI) values, the ratio of dissolved selenium (IV) values to dissolved selenium (VI) values is preferably at least 3 to 1.

Abstract translation: 从酸性硫酸铜水溶液中除去溶解的硒IV值的方法包括使溶液以插塞流方式通过管状构件，并且当溶液进入管状构件时将二氧化硫或亚硫酸盐溶液注入溶液中。 当硫酸盐溶液也含有溶解的硒（VI）值时，溶解的硒（IV）值与溶解的硒（VI）值的比优选为至少3:1。

公开(公告)号：US5584908A

公开(公告)日：1996-12-17

申请号：US340330

申请日：1994-11-14

Applicant: Hugh C. Scheie

Inventor： Hugh C. Scheie

IPC: B22F1/00 ,  B22F9/26 ,  C22B23/00 ,  C22C1/04

CPC classification number: B22F1/0011 ,  B22F9/26 ,  C22B23/0461 ,  C22C1/0433 ,  B22F2998/00

Abstract: A process is provided for the production of a nickel metal powder by reduction of an ammoniacal nickel (II) carbonate solution essentially free of metallic nickel. A soluble silver salt is added in an amount to provide a soluble silver to nickel weight ratio of 1.0 to 10.0 grams per kilogram of nickel, an organic dispersant, such as gelatin, is added in the amount of 5.0 to 20.0 grams per kilogram of nickel Ni (II), together with a spheroid-promoting agent such as anthraquinone in an amount of about 1.0 to 5.0 grams per kilogram of nickel. The solution is heated to a temperature in the range of 150.degree. to 180.degree. C., with agitation, under a hydrogen pressure of about 3.5 MPa for a time sufficient to reduce the ammoniacal ammonium nickel (II) carbonate solution to micron-sized nickel metal powder. A high purity, micron-sized nickel metal powder of generally spheroid particulate configuration is produced. The nickel metal powder has an average particle size of about 0.5 microns. The metal powder is characterized in having an iron impurity content of less than 100 ppm.

Abstract translation: 提供了通过还原基本上不含金属镍的氨基碳酸镍（II）溶液来生产镍金属粉末的方法。 加入可溶性银盐以提供可溶性银与镍的重量比为1.0至10.0克/千克镍，有机分散剂如明胶的加入量为5.0至20.0克/千克镍 Ni（II），以及量为约1.0至5.0克/千克镍的球形促进剂如蒽醌。 在约3.5MPa的氢气压力下，将该溶液在搅拌下加热到150-180℃的温度足以将氨酸铵（II）的碳酸盐溶液还原成微米级的镍 金属粉末。 生产出通常为球状颗粒构型的高纯度，微米级的镍金属粉末。 镍金属粉末的平均粒径约为0.5微米。 金属粉末的特征在于铁杂质含量小于100ppm。

公开(公告)号：US5246481A

公开(公告)日：1993-09-21

申请号：US966627

申请日：1992-10-26

Applicant: Hugh C. Scheie

Inventor： Hugh C. Scheie

IPC: B22F9/26 ,  B22F9/24 ,  B23D61/18 ,  B24D3/06 ,  B24D3/10 ,  C22B20060101 ,  C22B3/26 ,  C22B3/44 ,  C22B23/00 ,  C22C19/07 ,  C22C26/00

CPC classification number: C22B23/0461

Abstract: A process for the production of powdered metallic cobalt by reduction of cobaltous ammonium sulphate solutions. A soluble silver salt, preferably silver sulphate, is added in an amount to provide a soluble silver to cobalt weight ratio in the range of 1 to 10 g silver:1 kg cobalt, an organic dispersant such as bone glue or polyacrylic acid, or mixture thereof, is added in an amount of 0.01. to 2.5% of the weight of the cobalt, an ammonia to cobalt mole ratio of about 1.5:1 to 3.0:1 is established, and the solution is heated to a temperature in the range of 150 to 250.degree. C., preferably about 175.degree. C., with agitation under a hydrogen pressure of 2500 to 5000 kPa for a time sufficient to reduce the cobaltous sulphate to cobalt metal powder.

Abstract translation: 通过还原钴铵硫酸铵溶液来生产粉末状金属钴的方法。 加入可溶性银盐，优选硫酸银，以提供可溶的银与钴的重量比，其范围为1至10g银：1kg钴，有机分散剂如骨胶或聚丙烯酸，或混合物 的添加量为0.01。 至2.5重量％的钴，氨与钴的摩尔比为约1.5:1至3.0:1，并将溶液加热至150-250℃，优选约175℃ 在2500至5000kPa的氢气压力下搅拌一段时间，足以将硫酸钴还原成钴金属粉末。