Waste recovery process in production process of nickel-cobalt-manganese ternary precursor
A production process, nickel-cobalt-manganese technology, which is applied in the field of nickel-cobalt-manganese ternary precursor waste recycling, can solve the problems of strict environmental protection requirements and danger, and achieve the goal of reducing the cost of impurity removal, less control points, and reasonable wastewater Effect
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Embodiment 1
[0028] Based on the above description, the following specific examples are provided: For example, the main content of nickel-cobalt-manganese ternary precursor waste: Co 12.19%; Ni 31.48%; Mn 18.33%;
[0029] Step 1: Use sodium sulfide to precipitate and recover the valuable metals in the mother liquor of the nickel-cobalt-manganese ternary precursor production process. The content of metal sulfide after precipitation: Co 0.3%; Ni 12.66%; Mn 12.32%;
[0030] Step 2: Use 1.25mol / L sulfuric acid solution to carry out acid-dissolution leaching of the nickel-cobalt-manganese ternary precursor waste, the liquid-solid ratio is 5:1, the reaction temperature is 90°C, and the reaction time is 4h; the leaching residue is ready for use; the filtrate is sent as a product solution To the ternary precursor precipitation process to produce precursor products, the main content of nickel-cobalt-manganese solution: Co 19.85g / L; Ni 52.73g / L; Mn 0.004g / L; PH=1.13;
[0031] Step 3: Weigh the leach...
Embodiment 2
[0034] Provide the recovery process of nickel-cobalt-manganese ternary precursor waste such as the main content: Co 12.19%; Ni 31.48%; Mn 18.33%:
[0035] Step 1: Use sodium sulfide to precipitate and recover the valuable metals in the mother liquor of the nickel-cobalt-manganese ternary precursor production process. The content of metal sulfide after precipitation: Co 0.3%; Ni 12.66%; Mn 12.32%;
[0036] Step 2: Use 1.25mol / L sulfuric acid solution to carry out acid-dissolution leaching of the nickel-cobalt-manganese ternary precursor waste, the liquid-solid ratio is 5:1, the reaction temperature is 90°C, and the reaction time is 4h; the leaching residue is ready for use; the filtrate is sent as a product solution To the ternary precursor precipitation process to produce precursor products, the main content of nickel-cobalt-manganese solution: Co 19.85g / L; Ni 52.73g / L; Mn 0.004g / L; PH=1.13;
[0037]Step 3: Weigh the leaching slag and metal sulfide from step 2, and the weighin...
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