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

Releaching method of waste residue produced by leaching manganese carbonate ore with sulfuric acid

A manganese carbonate ore and leaching technology, applied in the direction of improving process efficiency, can solve the problems of low leaching rate of target metal manganese, waste of resources, etc., and achieve the effects of fast reaction speed, reduction of waste of resources, and improvement of leaching rate

Inactive Publication Date: 2016-01-20
SICHUAN NORMAL UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since manganese carbonate contains a certain amount of MnO 2 ,MnO 2 Insoluble in sulfuric acid, resulting in the use of sulfuric acid to leach 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: 2000g of sulfuric acid leaching the waste residue (6.2% of manganese, 15.1% of iron, particle size of 180 mesh) and 125g of corncob powder (≤1.5mm) produced by leaching manganese carbonate ore with sulfuric acid are added 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. washing. According to the test and analysis results of the leached slag after washing, the leaching rate of manganese is 96.9%.

Embodiment 2

[0023] Example 2: Add 20kg of waste residue (containing 6.2% manganese, 15.1% iron, particle size 180 mesh) and 1.5kg corncob 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, the liquid-solid separation and the washing of the leaching residue are carried out. According to the laboratory analysis results of the washed leaching slag, the leaching rate of manganese is 99.2%.

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 releaching method of the waste residue produced by sulfuric acid leaching manganese carbonate ore introduced by the present invention is to grind the waste residue produced by sulfuric acid leaching manganese carbonate ore to a particle size of ≤180 mesh and add pressure-resistant, sulfuric acid-resistant and ≤1.5mm corn cob powder together. Add the mixed solution of sulfuric acid and nitric acid to the reaction kettle corroded by nitric acid, and carry out stirring and leaching under airtight 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 carbon...

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 Patents(China)
IPC IPC(8): C22B7/00C22B47/00C22B3/08
CPCY02P10/20
Inventor 龙炳清周讯方绪坤
Owner SICHUAN NORMAL UNIV