Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for re-leaching waste residue generated through leaching manganese carbonate ore with sulfuric acid

A manganese carbonate ore leaching technology, applied in the direction of improving process efficiency, etc., can solve the problems of low leaching rate of target metal manganese, waste of resources, etc., achieve fast response, reduce waste of resources, and avoid environmental pollution.

Inactive Publication Date: 2014-04-30
SICHUAN NORMAL UNIVERSITY
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because manganese carbonate contains a certain amount of MnO2, and MnO2 is insoluble in sulfuric acid, when sulfuric acid is used to leaching manganese carbonate, the leaching rate of the target metal manganese is not high, resulting in waste of resources

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Add 2000g of waste residue (containing 6.2% manganese, 15.1% iron, particle size 180 mesh) and 125g corn stalk powder (≤1.5mm) produced by leaching manganese carbonate ore with sulfuric acid into a titanium-lined pressure reactor with a volume of 5L. Add 4.52L of a mixed solution with a sulfuric acid concentration of 0.5mol / L and a nitric acid concentration of 2g / L, and leaching at 40°C to 50°C with closed stirring (stirring speed 80r / min) for 2 hours. of washing. According to the laboratory analysis results of the washed leaching residue, the leaching rate of manganese is 97.5%.

Embodiment 2

[0023] Example 2: Add 20kg of waste residue (containing 6.2% manganese, 15.1% iron, particle size 180 mesh) and 1.5kg corn stalk powder (≤1.5mm) produced by leaching manganese carbonate ore with sulfuric acid into a titanium-lined pressure reactor with a volume of 50L , add 33L of a mixed solution with a sulfuric acid concentration of 0.7mol / L and a nitric acid concentration of 5g / L, and leaching at 60°C to 70°C with closed stirring (stirring speed 70r / min) for 1h. After the leaching is finished, liquid-solid separation and washing of the leaching residue are carried out. According to the test and analysis results of the leached slag after washing, the leaching rate of manganese is 99.0%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for re-leaching waste residue generated through leaching manganese carbonate ore with sulfuric acid. The method comprises the steps of grinding the waste residue which is generated through leaching the manganese carbonate ore with sulfuric acid until the particle size is not greater than 180 meshes, then, adding the ground waste residue and corn stalk powder with the particle size being not greater than 1.5mm together into a reaction kettle which is resistant to pressure and the corrosion of sulfuric acid and nitric acid, adding a mixed solution of sulfuric acid and nitric acid, and leaching while stirring under closed conditions.

Description

technical field [0001] The invention relates to a re-leaching method of waste residue produced by leaching manganese carbonate ore with sulfuric acid. Background technique [0002] Manganese carbonate ore is an important raw material for the production of manganese metal, manganese sulfate, manganese dioxide, manganese nitrate and other materials. The wet process is the main process for producing the above materials, and the leaching process is an essential process in this process. In the wet process of producing metal manganese, manganese sulfate and manganese dioxide, sulfuric acid leaching system is basically used. Since manganese carbonate contains a certain amount of MnO 2 , MnO 2 It is insoluble in sulfuric acid, so that when sulfuric acid is used to leach manganese carbonate ore, the leaching rate of the target metal manganese is not high, resulting in waste of resources. At present, the waste slag generated and stockpiled by sulfuric acid leaching manganese carb...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B3/08C22B47/00
CPCY02P10/20
Inventor 龙炳清林春李贵
Owner SICHUAN NORMAL UNIVERSITY