Pneumatic drying method and system for manganese dioxide

Abstract

The invention provides an airflow drying method and system for manganese dioxide, and the system comprises an airflow drying device which comprises a crushing unit and a drying unit, the crushing unit is communicated with the drying unit, and a scattering distributor is arranged at the joint of the crushing unit and the drying unit; the feeding device is communicated with the drying unit, and the joint of the feeding device and the drying unit is adjacent to the scattering distributor; the heating device is communicated with the crushing unit; and the dust removal device is communicated with the drying unit. According to the pneumatic drying system for the manganese dioxide, a double-shaft stirring self-cleaning type feeding mode is arranged in the feeding device, and the problems of bonding, blocking and the like of the manganese dioxide with high moisture content and high viscosity are prevented; in addition, part of the dried materials are returned into the feeding device, continuous and stable conveying of the manganese dioxide materials can be guaranteed, and the materials can be prevented from being bonded and held in a pole.

Description

technical field [0001] The invention relates to the technical field of manganese ore production, in particular to a method and system for drying manganese dioxide by air flow. Background technique [0002] At present, the main methods of producing manganese dioxide are manganese carbonate ore method and manganese oxide reduction roasting method. In China, manganese carbonate ore method is mostly used, that is, manganese carbonate ore powder is leached with sulfuric acid to obtain manganese sulfate solution, and then filtered, purified and electrolyzed. In foreign countries, manganese oxide reduction roasting method is mostly used, that is, manganese dioxide is obtained by pulverization, reduction leaching, purification and electrolysis. [0003] However, when the manganese dioxide wet material is dried, it is easy to cause difficulty in conveying due to its relatively high viscosity, and at the same time, it is also prone to the problem of incomplete drying. SUMMARY OF THE...

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Problems solved by technology

[0004] The invention provides an airflow drying method and system for manganese dioxide, so as to overcome the problems in the prior art such as difficulty in conveying and incomplete drying caused by the high viscosity of manganese dioxide wet materials.

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