| 摘要 |
non-ferrous metallurgy. SUBSTANCE: method involves leaching by 20-25% hydrochloric acid at catalyst : hydrochloric acid weight ratio of 1: (2.1-2.6); filtering; mixing solution obtained after filtering in equimolar ratio with precipitating agent such as 35-40% sodium formate; decomposing resultant sediment at temperature of 180-200 C. Method allows pure metal to be produced from worked out nickel catalysts. EFFECT: improved process, increased metal quality and improved ecology control. 1 tbl |
