Process of continuously leaching manganese oxide ore

Abstract

A method relates to extract the manganese dioxide from ore, its technological processes is as follows: according to the ratio of 1:0.10-0.40:0.2-0.6,mixing the manganese dioxide powder, pyrites, sulfuric acid or manganese sulfate, and then continuously putting them into the continuous bank which are composed of 1-6 agitated banks, so it can form continuously extraction, the temperature of whole process is controlled during 50 to 100 deg.C. During the whole extraction, it is the multilevel continuous extraction, feed liquid overflows from the upper-stage tank into the next agitated one, after the manganese dioxide powders are extracted in the bank for 1-8h, the feed liquid running out from the last lever bank are collected into the neutralization tank, then its Ph is adjusted between 4.5-6.0 by adding into the neutralization reagent, it can get the crude manganese sulfate by filtering the neutralization feed liquid and abandoning the residue. This invention can continuously feed, output and be controlled automatically, it also can decrease the number of workers and the intensity of work.

Description

(1) Technical field: [0001] The invention relates to a method for leaching manganese oxide ore, in particular to a method for continuously leaching manganese oxide ore with good production continuity. (two) background technology: [0002] At present, in the smelting production process, the leaching process can be divided into discontinuous leaching and continuous leaching. The current leaching and compounding of the manganese smelting industry adopts the discontinuous leaching process. The so-called intermittent leaching is to complete a series of reaction processes such as leaching and neutralization in a single reaction tank. In the production process of manganese smelting, it is to add sulfuric acid, water, manganese oxide ore, pyrite and other raw materials at one time for leaching. In the tank, after the leaching and compounding is completed, the materials in the leaching tank need to be transferred to the tank at one time before they can be fed again for production. Th...

AI Technical Summary

Problems solved by technology

The so-called intermittent leaching is to complete a series of reaction processes such as leaching and neutralization in a single reaction tank. In the production process of manganese smelting, it is to add sulfuric acid, water, manganese oxide ore, pyrite and other raw materials at one time for leaching. In the tank, after the leaching and compounding is completed, the materials in the leaching tank need to be transferred to the tank at one time before they can be fed again for production. This intermittent leaching process cannot realize continuous input and output of materials, resulting in a long turnaround time for materials between equipment , which reduces the effective utilization rate of equipment, increases the number of equipment used, and also increases production costs and labor intensity