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STANDARDS :GB1625-79
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Items |
INDEX
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Cell Grade
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First Grade
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Second Grade
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ZnCl2 % ≥ |
98.0
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98.0
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96.0
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ZnO % |
1.8~2.2
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2.0
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2.2
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SO4 % ≤ |
0.01
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0.01
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0.005
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Ba % ≤ |
0¨¡.1
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0.1
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0.2
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Fe % ≤ |
0.0005
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0.001
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0.002
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Pb % ≤ |
0.0005
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0.001
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0.002
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Hcl % ≤ |
0.01
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0.01
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0.01
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Corrosion test of Zinc |
PASS
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PASS
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PASS
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Liquid zinc chloride and hydrochloric acid aqueous solution and barium chloride, zinc material material after the reaction kettle let stand after supernatant fluid pump into the tank, adding potassium permanganate solution inside the tank, to precipitate solid impurities, and then adjusted by ammonium bicarbonate solution pH value to 4 ~ 5; After pressure filtration, the filtrate is heated to 80 + 5 ¡æ, add too much pure zinc powder, replacement of the metal ions in the filtrate; Add potassium permanganate solution to the water in a liquid for secondary removal of mass; The filtered liquid zinc chloride was. The present invention can provide a low liquid iron impurities zinc chloride, contain less impurity, high purity, convenient fine chemical production enterprises and the production of battery production enterprises.
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