Pilot experiment of 300t/a chemical manganese dioxide(CMD) prepared with manganese carbonate pyrogenation oxidation overall, some problems in the course of producing CMD and information of each technology target of the products were described.

• 采用碳酸锰沉淀热解法进行300t/a化学二氧化锰（CMD）中试开发研究,就生产中的一些问题做了叙述,介绍了中试产品的各项技术指标。