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Method for separating nickel and cobalt from active material contained in spent nickel-metal hydride battery
Method for separating nickel and cobalt from active material contained in spent nickel-metal hydride battery
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机译:从废镍氢电池中所含活性物质中分离镍和钴的方法
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摘要
A method for separating nickel, cobalt and a rare earth element from a material containing positive and negative electrode active materials of a nickel-metal hydride battery includes mixing a material containing positive and negative electrode active materials with a sulfuric acid solution and dissolving therein, and then separating a leachate from a residue; adding an alkali metal sulfate to the leachate to obtain a mixed precipitate of double sulfate of rare earth elements, and a rare-earth-element-free solution; and adding a sulfurizing agent to the rare-earth-element-free solution to separate a nickel and cobalt sulfide raw material and a residual solution.
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