Extraction method of treating oxytetracycline crystallizing mother solution was simple and good for economic performance and environmental protection.
萃取法处理土霉素结晶母液工艺简单、效率高，具有良好的经济和环境效益。
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。
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