The stability of the red pigment in litchi shell, which was extracted by acidic solution leaching from litchi shell, was studied.
以荔枝壳为原料，在酸性条件下浸提荔枝壳红色素，并对其稳定性进行了研究。
The technical approach of acidic leaching of pyrolusite ore, purifying of manganese leaching solution, and crystallizing of manganese carbonate from purified manganese solution was studied.
探讨了软锰矿直接酸浸、含锰浸出液净化除杂、锰净化液碳化结晶等工艺条件。
This paper made study on gold extraction by leaching copper anode mud with acidic thiourea solution.
本文研究了用酸性硫脲溶液从铜阳极泥中浸取金的方法。
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