Method for preparing manganese sulfate by manganese oxide ore

A technology of manganese oxide ore and manganese sulfate, applied in the direction of manganese sulfate, etc., can solve problems such as difficulty in realizing industrial production, hindering the smooth progress of the reaction, and having no industrial application value, and achieves low price, improved recovery rate and leaching rate, and short reaction time Effect
CN101157481AInactive Publication Date: 2008-04-09汪云华 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
汪云华
Publication Date
2008-04-09
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention provides a method for preparing manganese sulfate from manganese oxide ore. The method comprises the following processing steps: a, adding manganese oxide ore, ferrous sulfate or sulfur and water into a reactor; b, allowing for reaction; c, performing solid-liquid separation and slag washing to obtain iron concentrate and ready-to-use filtrate; d, removing impurities from the filtrate to get manganese sulfate solution. The extraction rate of manganese can exceed 85 percent. The manganese sulfate preparing method of the invention has the advantages of environment friendliness, short course and high manganese recovery, and can not only overcome problems of long course, low recovery, high cost, environmental pollution, etc. of traditional methods and significantly improve the recovery and extraction rate of manganese, but also utilize low grade manganese ore (iron-manganese ore in particular) and transform slag into products. The invention has prominent technological progress and outstanding substantial characteristics, and can produce excellent social and economic benefits.
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Description

technical field

[0001] The invention relates to a method for preparing manganese sulfate from manganese oxide ore, in particular to a method for preparing manganese sulfate from ferromanganese ore. Background technique

[0002] Manganese sulfate is the main raw material for the preparation of manganese dioxide, trimanganese tetraoxide and electrolytic manganese. There are three main methods for preparing manganese sulfate with manganese ore reduction:

[0003] 1. Coal reduction roasting - sulfuric acid leaching method. This method is a traditional production process, the technology is mature, and the quality of manganese sulfate is better; but SO 2 The flue gas is large, the dust pollution is serious, and the coal consumption is large.

[0004] 2. Two ore roasting method. The manganese ore and pyrite are crushed and mixed separately, roasted at 500°C to 700°C for about 1 hour, and then leached with water or dilute sulfuric acid. This method also produces a large amount ...

Claims

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