Technology for producing electrolytic metal manganese from low-grade manganese mine

A technology of electrolytic manganese metal and low-grade manganese ore, which is applied in the direction of photographic process, photographic auxiliary process, process efficiency improvement, etc., can solve the problems of high production cost, complicated process, strong corrosion of materials, etc. The effect of high utilization efficiency and resource recycling

Inactive Publication Date: 2014-12-24
无锡市森信精密机械厂
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AI Technical Summary

Problems solved by technology

Most of these leaching methods have complex processes, high production costs, strong material corrosion, or serious pollution, and are not suitable for the recovery and extraction of manganese in low-grade manganese oxide ores.

Method used

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Examples

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Embodiment 1

[0087] A process for producing electrolytic manganese metal from low-grade manganese ore, the process flow includes: ore grinding, sulfuric acid preleaching, sulfur dioxide combustion to prepare sulfur dioxide, sulfur dioxide reduction leaching, solid-liquid separation, leachate purification, dithionate separation, electrolytic manganese metal production , Decomposition of dithionite, production of anhydrous sodium sulfate, and recovery of production water.

[0088] The composition of the low-grade manganese ore is (%): 48.8SiO2, 0.4TiO2, 10.9Al2O3, 2.3Fe, 10.6Mn, 0.9MgO, 4.4CaO, 1.6Na2O, 4.6K2O, 0.1P2O5, 1.7Ba.

[0089] 1 Grinding

[0090] The manganese ore first enters the silo through the grid screen, and the large ore on the grid screen is rolled by a bulldozer to force it to pass through the grid screen into the material bin. After entering the warehouse, the manganese ore enters the crushing system consisting of a hammer crusher and a drum screen; crushed to a particle ...

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PUM

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Abstract

The invention relates to a technology for producing electrolytic metal manganese from low-grade manganese mine. The technological flow comprises ore grinding, sulfuric acid pre-leach, combusting sulfur for preparing sulfur dioxide, sulfur dioxide reduction leaching, solid-liquid separation, purifying of a leaching liquid, separation of dithionate radical, production of electrolytic metal manganese, decomposition of dithionate radical, production of anhydrous sodium sulfate and recovery of production water. The technology is simple, resource is cycled for utilization, the reduction leaching rate of manganese is even up to 98%, and the recovery utilization efficiency is high.

Description

technical field [0001] The invention relates to a process for producing electrolytic metal manganese from low-grade manganese ore. Background technique [0002] my country's manganese ore resources are very rich. By the end of 2005, it was found that the national reserves were 746 million tons, including 215 million tons of reserves and basic reserves, and 530 million tons of resources. The main type is manganese carbonate ore, accounting for about 73% of the total reserves, followed by iron-manganese ore and manganese oxide ore, and manganese-rich ore only accounts for 6.4% of the total reserves. In recent years, my country's annual manganese ore mining volume is about 10 million tons, of which manganese carbonate ore accounts for about 45%, resulting in the depletion of high-grade manganese ore. 90% of the manganese ore is mainly used in the iron and steel industry to produce manganese-based ferroalloys and electrolytic manganese metals. With the rapid development of my ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/04C25C1/10
CPCY02P10/20
Inventor 华兆红
Owner 无锡市森信精密机械厂
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