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A hydrometallurgical process was developed for recovery of nickel and cobalt from the hydrochloric acid leaching solution of alloy scraps. The process consists of five major unit operations: 1) leaching with 6 mol/L hydrochloric acid under the L/S ratio of 10:1 at 95 °C for 3 h; 2) copper replacement by iron scraps under pH value of 2.0 at 80 °C, and stirring for 1 h; 3) removal of iron and chromium...
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