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Method for recycling mica, feldspar and quartz sand from kaolin tailings

A technology for kaolin tailings and quartz sand, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of polluting the environment, disrupting ecological balance, resource loss, etc., achieving large processing capacity and strong applicability , the effect of reducing the load

Active Publication Date: 2017-12-26
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the current resource development situation, the utilization rate of kaolin in Guangdong, Guangxi, Fujian, Jiangxi, etc. in southern my country does not exceed 20%, and the tailings output rate has reached about 80%. Stacking or backfilling for reclamation will seriously pollute the environment, destroy the ecological balance, and cause a large loss of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] It is selected from kaolin tailings in a certain place in Guangdong. The particle size is mainly concentrated above 0.045um. The main minerals are quartz, muscovite, biotite, dark brown green tourmaline, and a small amount of magnetite, hematite, and rutile.

[0026] A method for reclaiming mica and feldspar and quartz sand from kaolin tailings, comprising the following steps:

[0027] (1) Add water to the kaolin tailings and send them to the rod mill for selective grinding, the pulp concentration is 40%, the ore feeding rate is 20T / h, and the sand d of the grinding product is controlled max =0.6mm;

[0028] (2) The grinding product is sieved through a 0.6mm high-frequency sieve, the crude product on the sieve is flake mica and enters step (6), and the minerals with a particle size of less than 0.6mm are under the sieve;

[0029] (3) Minerals with a particle size of less than 0.6mm pass through the hydraulic classifier, and by adjusting the water volume of the hydrauli...

Embodiment 2

[0036] Selected from kaolin tailings in a certain place in Jiangxi, the particle size is mainly concentrated above 0.038um, the main minerals are quartz and muscovite, muscovite is colorless and transparent, some have iron staining, a small amount of magnetite, hematite, zircon , Monazite.

[0037] A method for reclaiming mica and feldspar and quartz sand from kaolin tailings, comprising the following steps:

[0038] (1) Add water to the kaolin tailings and send them to the rod mill for selective grinding, the pulp concentration is 60%, the ore feeding rate is 15T / h, and the sand d of the grinding product is controlled max =0.6mm;

[0039] (2) The ore grinding product passes through a 0.6mm cylindrical sieve, and the crude product on the sieve is flake mica and enters step (6), and the minerals with a particle size of less than 0.6mm are under the sieve;

[0040] (3) Minerals with a particle size of less than 0.6mm are adjusted by a hydrocyclone to remove fine sand and mud w...

Embodiment 3

[0047] It is selected from kaolin tailings in a certain place in Guangxi. The particle size is mainly concentrated above 0.054um. The main minerals are quartz and muscovite. Muscovite is colorless and transparent, and some have iron staining, a small amount of magnetite, hematite, and zircon. , Monazite.

[0048] A method for reclaiming mica and feldspar and quartz sand from kaolin tailings, comprising the following steps:

[0049] (1) Add water to the kaolin tailings and send them to the rod mill for selective grinding, the pulp concentration is 60%, the ore feeding rate is 15T / h, and the sand d of the grinding product is controlled max =0.6mm;

[0050] (2) The ore grinding product passes through a 0.6mm cylindrical sieve, and the crude product on the sieve is flake mica and enters step (6), and the minerals with a particle size of less than 0.6mm are under the sieve;

[0051] (3) Minerals with a particle size of less than 0.6mm pass through the hydrocyclone to remove fine sa...

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Abstract

The invention provides a method for recycling mica, feldspar and quartz sand from kaolin tailings. The method includes the following steps that the kaolin tailings are subjected to selective milling; then screening is conducted, oversize coarse products are almost flaky pure mica, and undersize products are subjected to hydraulic classification so that fine sand containing mud can be removed; classification settled sand is reselected repeatedly so that heavy minerals can be removed; reselected fine sand is subjected to medium magnet and strong magnet operations and then magnetic separation fine sand can be obtained; the magnetic separation fine sand is subjected to the first segment of flotation, the mica can be separated at first, and a fragmental mica product is obtained; the feldspar is separated from quartz in the second segment of flotation; and finally the mica, feldspar and quartz product can be obtained, and the fine sand and milltailings produced in the beneficiation process can be used for unfiring of new building materials like aerated bricks. By adoption of the method, kaolin tailing resources can be utilized comprehensively and effectively; and moreover, the technological process is simple, energy consumption is low, 'zero' release of solid waste is realized, the policy requirements of environmental protection act can be met, and the economic, social and environmental protection benefits are good.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of kaolin tailings, in particular to a method for recovering mica, feldspar and quartz sand from kaolin tailings. technical background [0002] Kaolin is an important industrial raw material, widely used in many fields such as paint, coating, papermaking, rubber, plastic, cable, ceramics, enamel, refractory materials, textile, cement, automobile, chemistry, environmental protection, agriculture, etc. With the development of national economy Need, kaolin resources are more developed and utilized. According to the current resource development situation, the utilization rate of kaolin in Guangdong, Guangxi, Fujian, Jiangxi, etc. in southern my country does not exceed 20%, and the tailings output rate has reached about 80%. Stacking or backfilling for reclamation will seriously pollute the environment, destroy the ecological balance, and cause a large loss of resources. [0003] The silicate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 彭寿尚德兴毛素马立云段树桐吴建新
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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