| abstract |
The invention discloses a method for comprehensively extracting valuable metals from laterite nickel ore. Carry out pressure leaching to obtain the first leaching solution and the first leaching residue, conduct the neutralization reaction of the first leaching residue to obtain the second leaching residue and the second leaching solution through solid-liquid separation; (3) subject the second leaching residue to pickling and extraction , washing, back extraction, and precipitation to obtain scandium hydroxide; the second leaching solution is subjected to alkalization, impurity removal, complexation and precipitation to obtain nickel cobalt manganese hydroxide. The method of the invention has the advantages of low investment cost, low acid consumption and high recovery rate of valuable metals. |