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method for the treatment of zinnabfaellen from (continued and brillantblechfabrikation
method for the treatment of zinnabfaellen from (continued and brillantblechfabrikation
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机译：（续和辉煌漂白制造）治疗zinnabfaellen的方法
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Palmitin, zinc chloride, and tin are recovered from the scruff from tinning pots. The scruff is crushed, agitated with water below 60 DEG F., and the liquid is drawn off and filtered in a filter press. The remaining sludge in the tank contains palmitin and palmitic acid, tin, tin oxide and a small proportion of chloride of zinc and is ground with water to a paste and screened to remove the heavier particles of tin. "Tin soap," which consists of tin oxide and palmitine, and a proportion of the lighter particles of tin are also separated in the screening operation and are then agitated in a vessel when the tin sinks and the supernatant palmitine and tin oxide is filtered to remove water treated with sufficient hydrochloric acid to dissolve any zinc and tin oxychlorides, filtered, dried and distilled. The distillate contains a mixture of palmitin and oil.ALSO:Zinc chloride is recovered from the scruff from tinning pots The scruff is crushed to pieces about 1/4 in. in diameter, agitated in a tank with about one-fifth as much water below 60 DEG F. until the zinc chloride solution obtained has a specific gravity of 1.3 when it is drawn off and filtered in a filter press. The remaining sludge in the tank contains palmitine, which term includes palmitin and palmatic acid, tin, tin oxide and a small proportion of chloride of zinc, and is ground with water to a paste and screened to remove the heavier particles of tin. "Tin soap" which consists of tin oxide and palmitine, and a proportion of the lighter particles of tin are also separated in the screening operation and are then agitated in a vessel when the tin sinks and the supernatant palmitine and tin oxide is filtered to remove water, treated with sufficient hydrochloric acid to dissolve any zinc and tin oxychlorides, filtered, dried and distilled. The distillate contains a mixture of palmitine and oil.
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