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Process for removing mica from machine-made sand through two-stage wet method

A technology of machine-made sand and mica, applied in wet separation, chemical instruments and methods, solid separation, etc., can solve the problems of dust pollution, limited effect, mica exceeding standard, etc., and achieve good effect.

Pending Publication Date: 2021-10-26
宁化日昌升新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some granites contain more mica, and the machine-made sand produced from this type of granite is easy to exceed the standard mica, resulting in unqualified products
The traditional dry mica removal will cause dust pollution to the environment. The traditional wet method washes the mica with water. The mica that can be washed away with water is only a small part of the mica floating on the water surface, and the effect is limited.

Method used

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  • Process for removing mica from machine-made sand through two-stage wet method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: A second-stage wet mica removal process for machine-made sand, comprising the following steps:

[0025] Step 1. Slurry mixing process: fully mix the raw material sand with water to obtain a mixed product a, the water content of the product a is 60% by weight;

[0026] Step 2, the first magnetic separation process: the product a obtained in step 1 is subjected to magnetic separation through a wet drum magnetic separator with a magnetic field strength of 3500Gs to obtain product b adsorbed by the magnetic separation equipment and product b not adsorbed by the magnetic separation equipment product c;

[0027] Step 3, the second magnetic separation process: the product b obtained in step 2 is subjected to magnetic separation through a wet drum magnetic separator with a magnetic field strength of 4500Gs to obtain product d adsorbed by the magnetic separation equipment and product d not adsorbed by the magnetic separation equipment product e;

[0028] Step 4, ...

Embodiment 2

[0032] Embodiment 2: A second-stage wet mica removal process for machine-made sand, comprising the following steps:

[0033] Step 1. Slurry mixing process: fully mix the raw material sand with water to obtain a mixed product a, the water content of the product a is 55% by weight;

[0034] Step 2, the first magnetic separation process: the product a obtained in step 1 is subjected to magnetic separation through a wet drum magnetic separator with a magnetic field strength of 3000Gs to obtain product b adsorbed by the magnetic separation equipment and product b not adsorbed by the magnetic separation equipment product c;

[0035] Step 3, the second magnetic separation process: the product b obtained in step 2 is subjected to magnetic separation through a wet drum magnetic separator with a magnetic field strength of 5500Gs to obtain product d adsorbed by the magnetic separation equipment and product d not adsorbed by the magnetic separation equipment product e;

[0036] Step 4, ...

Embodiment 3

[0040] Embodiment 3: A second-stage wet mica removal process for machine-made sand, comprising the following steps:

[0041] Step 1. Slurry mixing process: fully mix the raw material sand with water to obtain a mixed product a, the water content of the product a is 55% by weight;

[0042] Step 2, the first magnetic separation process: the product a obtained in step 1 is subjected to magnetic separation through a wet drum magnetic separator with a magnetic field strength of 2800Gs to obtain product b adsorbed by the magnetic separation equipment and product b not adsorbed by the magnetic separation equipment product c;

[0043] Step 3, the second magnetic separation process: the product b obtained in step 2 is subjected to magnetic separation through a vertical ring high gradient magnetic separator with a magnetic field strength of 4000Gs to obtain the product d adsorbed by the magnetic separation equipment and the product d not adsorbed by the magnetic separation equipment th...

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PUM

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Abstract

The invention discloses a process for removing mica from machine-made sand through a two-stage wet method, and relates to the field of sandstone production. The process comprises a size mixing process, a first magnetic separation process, a second magnetic separation process, a sand washing process, a concentration process and a filtering process. Compared with the prior art, the process has the beneficial effects that a wet process is adopted, so that dust pollution is avoided; two-stage magnetic separation is adopted to remove redundant mica, and compared with a traditional process, the mica removal effect is good; the byproduct mica can be obtained for other purposes; and for sand with relatively high iron-containing minerals, the iron-containing minerals can be recycled.

Description

technical field [0001] The invention relates to the field of sand and gravel production, in particular to a second-stage wet mica removal process for machine-made sand. Background technique [0002] With the development of the sand and gravel industry, the production of machine-made sand from granite is an important production method. However, some granites contain more mica, and the machine-made sand produced from this type of granite is easy to exceed the standard mica, resulting in unqualified products. Traditional dry mica removal will cause dust to pollute the environment. Traditional wet mica removal by washing with water, the mica that can be washed away with water is only a small part of mica floating on the water surface, and the effect is limited. Therefore, a new wet mica removal process is needed. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a second-stage wet mica remova...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B9/00B03C1/02B03C1/30B03D1/00
CPCB03B7/00B03B9/00B03C1/02B03C1/30B03D1/00
Inventor 金雯雯陈炳金夏忠勇陈桂木
Owner 宁化日昌升新材料有限公司