求翻译：中国对化学二氧化锰制备方法的研究以碳酸锰热分解法居多, 此法虽然工艺步骤较多, 但各工序操作条件较易控制, 原材料来源广, 特别是可使用低品位菱锰矿, 比较适合中国国情。但生产过程中有二氧化碳气体产生, 不适应当今环境保护的要求, 且碳酸锰热解转化率较低, 产品的整体质量不高, 满足不了电池工业对二氧化锰的品质要求, 须进一步提高其产品质量。是什么意思？

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China 2 of manganese oxide chemical preparation methods of the study in manganese carbonate thermal decomposition method, this method, while the more steps, but the process is easy to control operating conditions, and sources of raw materials, in particular, you can use low-grade manganese ore, Mits

China to chemistry manganese dioxide preparation method research by manganese carbonate thermal decomposition law majority, this law although the craft step are many, but various working procedures operating condition is easy to control, raw material originates broadly, specially may use the low-gra

Study on preparation methods of chemical manganese dioxide in China mostly to manganese carbonate thermal decomposition method, this method more process steps, but the process operating conditions are easier to control, sources of raw materials wide, especially using low-grade rhodochrosite, more su

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