Low-cost mineral processing technology for high-silicon high-calcium magnesite

A high-calcium magnesite, low-cost technology, applied in the field of beneficiation, can solve the problems of vulnerable equipment, large floor space, small processing capacity, etc., and achieve the effect of saving basic investment, less floor space, and small size.

Active Publication Date: 2017-12-01
中冶北方(大连)工程技术有限公司
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this flotation process are that the mechanical agitation flotation machine has a complex structure and a large area; the beneficiation enrich

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-cost mineral processing technology for high-silicon high-calcium magnesite

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1.

[0029] The present invention is a low-cost beneficiation process for high-silicon and high-calcium magnesite. The main chemical components of the processed high-silicon and high-calcium magnesite are: 46.20% magnesium oxide, 2.28% silicon dioxide, and 1.92% calcium oxide. The high-pressure roller mill obtains medium crushed products with a product size of 2 mm or less, and feeds the medium crushed products with a particle size of 2 mm or less into a grid type ball mill for grinding. The grinded product particle size of the grid type ball mill is -0.076 mm. 40%, the particle size of the one-stage lattice ball mill is -0.076mm, accounting for 40% of the grinding products are fed into the closed-circuit grinding composed of the second-stage lattice ball mill and spiral classifier for grinding operations, and the particle size of the second-stage lattice ball mill is -0.076mm 70-80% of the overflow products enter the next flow flotation operation, and the spiral c...

Example Embodiment

[0030] Example 2.

[0031] The present invention is a low-cost beneficiation process for high-silicon and high-calcium magnesite. The main chemical components of the processed high-silicon and high-calcium magnesite are: 45.80% magnesium oxide, 2.28% silicon dioxide, and 1.50% calcium oxide. High-pressure roller mill, the product size is 2mm or less, and the medium crushed product with the product size of 2mm or less is obtained. The medium crushed product with the particle size of 2mm or less is fed into a grid type ball mill for grinding, and the grinding product of the grid type ball mill for the first stage The particle size is -0.076mm accounting for 45%, and the particle size of the one-stage lattice ball mill is -0.076mm accounting for 45%. The grinding product is fed into the closed-circuit grinding composed of the second-stage lattice ball mill and the spiral classifier for grinding operation. The overflow product of the ball mill with a particle size of -0.076mm, accoun...

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

No PUM Login to view more

Abstract

The invention relates to a low-cost mineral processing technology for high-silicon high-calcium magnesite. The low-cost mineral processing technology comprises the steps of raw material crushing operation, grinding operation and flotation operation. The low-cost mineral processing technology is characterized by comprising the following specific technological steps that raw magnesite is crushed through a medium crusher, grinding operation is conducted through a closed circuit grinding assembly composed of a primary grate ball mill, a secondary grate ball mill and a spiral grading machine, an overflow product with the particle size of 70-80% of the overflow product being -0.076 mm is obtained and subjected to flotation operation adopting primary reverse flotation and primary obverse floatation, the magnesite comprising 46.50-47.00% of magnesium oxide, 0.80-1.50% of silicon dioxide and 0.90-2.00% of calcium oxide is obtained, wherein the concentrate yield is 82.00-90.00%, and the recovery rate is 81.45-85.00%. The low-cost mineral processing technology has the advantages that flotation operation adopting only primary reverse flotation and primary obverse floatation, thus, the grade of the silicon dioxide in the high-silicon high-calcium magnesite can be lowered to 0.5-1.5% from 2%, the content of silicon is lowered by 50% or above, the grade of the calcium oxide is lowered to 1-2% from 3%, and the content of calcium is lowered by 50% or so.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a low-cost mineral processing process for high-silicon and high-calcium magnesite. Background technique [0002] Magnesite is one of the advantageous mineral resources in my country, and its reserves, output, and export volume all rank first in the world. The proven reserves of magnesite in the world are about 13 billion tons. my country's proven reserves are about 3.12 billion tons, accounting for 25%-30% of the world's proven reserves, mainly distributed in Liaoning and Shandong. The 12 production areas in Liaoning have reserves of 2.57 billion tons, accounting for about 86% of my country's total reserves. Magnesite is widely used in refractory materials, military industry, national defense technology, machinery manufacturing, automobile, textile, electronics and other fields. [0003] At present, due to the lack of planning of some miners, they mine a...

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
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 孟光栋韩卫涛闫文光陈江华宋峰汪明月
Owner 中冶北方(大连)工程技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap