Highly efficient ore dressing system of medium-low class aluminium ore

A technology of low-grade bauxite and mineral processing methods, applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of large consumption of chemicals and achieve low production costs, stable operation, and stable indicators

Inactive Publication Date: 2005-04-06
NORTHEASTERN UNIV
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] On the surface, the process flow is a classification-flotation process where the two operations of classification and flotation are interchanged, but the coarse particles will still pass through the flotation operation, so the chemical consumption is greater than that of the classification-flotation process.

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
  • Highly efficient ore dressing system of medium-low class aluminium ore

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047] Example 1: Grinding the pulverized raw materials with a ball mill. The working conditions of the ball mill are as follows: ball mill specification Φ305×305mm, wet ball mill grinding, spherical medium diameter and ratio are Φ30mm: Φ20mm: Φ15mm = 30%: 50%: 20%, medium filling rate is 40%, material-ball ratio is 1.2, the speed rate is 91%, the grinding weight concentration is 70%, the grinding time is 8 minutes, and the grinding fineness reaches -200 mesh, accounting for 48.22%. The resulting product is made into a slurry with a weight concentration of 30%, and is classified by a hydrocyclone to control d 50 The structural parameters and operating parameters of the hydrocyclone are as follows: diameter 50mm, ore feeding port diameter 10mm, overflow pipe diameter 13mm, sand outlet diameter 6mm, cone angle 20°, ore feeding pressure 0.06MPa, here Under the conditions, the ratio of aluminum to silicon is 9.18, the yield is 43.34%, and the Al 2 o 3 The recovery rate is 47.05...

example 2

[0048] Example 2: Grinding fineness -200 mesh accounts for 52.55%, and the grinding product is made into pulp with a weight concentration of 40%. The feeding pressure of the hydrocyclone in the classification operation is 0.09MPa, and the feeding weight concentration is 40%; desliming, The ore feeding pressure of the hydrocyclone in the concentration operation is 0.12MPa, the ore weight concentration is 30%; the weight concentration of the flotation pulp is 35%, and the flotation time is 8 minutes. The collector uses sodium oleate, and the dosage is 825g / t raw ore; the dispersant Sodium carbonate is used in an amount of 1.8kg / t raw ore to obtain flotation concentrate. Other conditions are the same as Example 1, and the available aluminum-silicon ratio is 9.47, yield 43.23%, Al 2 o 3 Coarse grade concentrate with a recovery rate of 47.89%, the aluminum-silicon ratio of the mixed concentrate is 9.38, Al 2 o 3 The recovery rate was 88.56%.

example 3

[0049] Example 3: Grinding fineness -200 mesh accounts for 54.96%, and the grinding product is made into slurry with a weight concentration of 50%, for classification operations, the feeding pressure of the hydrocyclone is 0.12MPa, and the feeding weight concentration is 50%; desliming , Concentration operation hydrocyclone feed pressure 0.16MPa, feed ore weight concentration 20%; flotation pulp weight concentration 40%, flotation time 10min, the collector uses a mixture of oxidized paraffin soap and sodium oleate (oxidized paraffin Soap:sodium oleate=1:1, weight ratio), the dosage is 1000g / t raw ore; the dispersant uses sodium carbonate, the dosage is 2.0kg / t, to obtain the flotation concentrate. Other conditions are the same as Example 1, and the available aluminum-silicon ratio is 9.28, productive rate 43.52%, Al 2 o 3 Coarse grade concentrate with a recovery rate of 47.16%, the aluminum-silicon ratio of the mixed concentrate is 9.57, Al 2 o 3 The recovery rate was 88.11...

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 designs the center low-grade bauxite dressing method, takes the center low-grade one water duralumin stone bauxite as the raw material, the main point is uses the 'selective rubbing, the graduation, escapes the putty, the concentration, the narrow rank flotation process' technical process, the selective rubbing uses the ball mill or the vibration rub; The graduation is separates the qualified large grain ore concentrate, chooses water used grain-by-grain selection flowing; escapes the putty, the concentration is carries on the escapes the putty to the ore slime which is smaller than 10mu m and to cause the pulp concentration, satisfies the pulp density request of the following flotation process, uses the water power cyclone; The narrow rank flotation process uses the flotation process craft, the flotation reagent is the ore-dressing;the catche receive medicinal preparation is the fatty acid, the dispersing agent is the sodium carbonate,merges the graduation work obtained large grain ore concentrate with the flotation concentrate and final obtain the ore concentrate,the aluminum silicon ratio in the large grain ore concentrate is bigger than 9, the production rate 30~50%, the Al2O3returns-ratio 40~50%, the mix ore concentrate aluminum silicon ratio is 9~10, the Al2O3returns-ratio is bigger than 88%.The technical process structure is simple,the production cost is low, the movement is steady, the target is stable, has a stronger adaptiveness to the center low-grade one water duralumin stone bauxite.

Description

technical field [0001] The invention relates to a processing method of bauxite, in particular to a beneficiation method of middle and low grade bauxite. Background technique [0002] Bauxite is an important strategic resource and an important raw material for alumina industry, refractory material industry and building material industry. The world is rich in bauxite resources, mainly distributed in Australia, Guinea, Vietnam, Jamaica, India, Suriname, Indonesia, Greece and China. The ore types are mainly divided into: gibbsite type, boehmite type and diaspore type. Most of them in foreign countries are gibbsite type, which is characterized by low aluminum and silicon, high aluminum-silicon ratio, and generally high iron oxide content. [0003] my country is rich in bauxite resources, and most of the ore is diaspore type. The aluminum-silicon ratio of bauxite is mostly distributed between 4 and 10, accounting for about 85.61% of the national reserves. Bauxite reserves with...

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): B02C17/00B02C19/16B03B5/34B03B7/00B03D1/002
Inventor 韩跃新王泽红袁致涛印万忠于福家
Owner NORTHEASTERN UNIV
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