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Method for removing lead from high-lead type manganese resources

A resource and high-lead technology, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve problems such as difficult separation of lead and manganese minerals

Active Publication Date: 2018-01-09
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem of difficult separation of lead and manganese minerals in the deleading process of high-lead manganese resources in the prior art, the purpose of the present invention is to provide a method of using iron-containing materials with high-lead manganese resources for high-temperature roasting, by regulating iron and manganese The formation of composite oxides and the migration of lead elements can be used to achieve efficient deleading methods by means of grinding and magnetic separation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] With TMn 43.6%, Pb 12.5% ​​electrolytic manganese anode slime, magnetite, and hematite as raw materials, finely ground limestone and quicklime as flux, adjust the binary alkalinity of the mixture to 0.05, and the Mn / Fe mass ratio to 1.5, Finely grind the mixture until the particle size of -200 mesh accounts for 100%, and the particle size of -400 mesh accounts for 80%; then the mixture is pelletized to make pellets of 10-12mm, and the water content of the mixture is 8%, the pellets were dried in a 120°C drying oven to obtain dry pellets; the dry pellets were placed in a muffle furnace, the first-stage calcination temperature was 600°C for 60 minutes, and the second-stage calcination temperature was 1350°C. The time is 30 minutes; after cooling, the roasted agglomerate is ground until the mass percentage of -200 mesh size is 100%, and magnetic separation is performed under a magnetic field intensity of 1000Gs. The recovery rates of manganese and iron in the obtained magn...

Embodiment 2

[0030] Using TMn 38.2%, Pb 3.4% lead-containing manganese ore, hematite, goethite and limonite as raw materials, finely ground limestone and quicklime as flux, adjust the binary alkalinity of the mixture to 0.45, and the mass ratio of Mn / Fe 0.5, finely grind the mixture until the -200 mesh size accounts for 100%, and the -400 mesh size accounts for 85%; The water content of the material is 8%, and the pellets are dried in a drying oven at 120°C to obtain dry pellets; the dry pellets are placed in a muffle furnace, and the first-stage roasting temperature is 900°C for 10 minutes, and the second-stage roasting temperature is 1250°C for 60 minutes; after cooling, grind the calcined agglomerate until the particle size of -200 mesh accounts for 100% by mass, and perform magnetic separation under a magnetic field strength of 900Gs. The recovery rates of manganese and iron in the obtained magnetic separation concentrate are 93.1% and 92.7%, and the removal rate of lead is 94.6%. The...

Embodiment 3

[0032] With TMn 45.2%, Pb 6.8% electrolytic zinc anode slime and magnetite as raw materials, finely ground limestone and quicklime as flux, adjust the binary alkalinity of the mixture to 0.30, and the mass ratio of Mn / Fe to 1.0, the mixture Finely grind until the -200 mesh particle size accounts for 100%, and the -400 mesh particle size accounts for 90%; then the mixture is pelletized to make pellets of 5-8mm, and the water content of the mixture is 8%. The pellets were dried in a drying oven at 120°C to obtain dry pellets; the dry pellets were placed in a muffle furnace, the first-stage roasting temperature was 800°C for 30 minutes, the second-stage roasting temperature was 1200°C, and the roasting time was 180 min; after cooling, grind the roasted agglomerate until the mass percentage of -200 mesh size is 100%, and perform magnetic separation under the magnetic field strength of 1050Gs. The recovery rates of manganese and iron in the obtained magnetic separation concentrate ...

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Abstract

The invention discloses a method for removing lead from high-lead manganese resources. The method is to finely grind high-lead manganese resources, iron-containing materials and calcium flux respectively, then mix ore, mix and form agglomerates, and the obtained agglomerates are dried Finally, two stages of roasting are carried out to obtain roasted agglomerates; the roasted agglomerates are ground and magnetically separated to obtain magnetic iron concentrate and lead-rich tailings; the gangue content in the magnetic concentrate obtained by this method is low, especially The content of harmful element lead is extremely low, and it is a high-quality raw material for manganese alloys.

Description

technical field [0001] The invention relates to a method for deleading high-lead manganese resources, in particular to a method for roasting high-lead manganese resources by using iron-containing auxiliary materials and high-lead manganese resources to achieve high-efficiency deleading of high-lead manganese resources and obtain high-quality manganese alloys The raw material method belongs to the technical field of metallurgical raw material pretreatment. Background technique [0002] At present, with the development of the economy and industry, especially the development of the steel industry, the market demand for manganese ore is increasing. As a result, the gap between China's manganese ore consumption and ore production has been increasing year by year. The main reason for this situation is that the grade of manganese ore in my country is low, and there are almost no high-grade and high-quality manganese-rich ore resources. The characteristics of poor, miscellaneous a...

Claims

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Application Information

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IPC IPC(8): C22B1/02B03C1/015
Inventor 张元波刘兵兵王娟姜涛李光辉苏子键彭志伟饶明军范晓慧黄柱成张鑫路漫漫古佛全刘继成韩本来
Owner CENT SOUTH UNIV
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