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Method for removing impurities from attapulgite clay ores

A technology of attapulgite clay and ore, which is applied in the direction of aluminum silicate and silicate, can solve the problems affecting the industrialization of attapulgite clay wet purification process, unacceptable purified products, difficult dehydration and drying, etc., to achieve Low cost, simple method, stable quality effect

Inactive Publication Date: 2012-09-26
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the good colloidal properties of attapulgite clay, there are problems such as dehydration, drying difficulties, high energy consumption and high cost in the process of wet purification of attapulgite clay, which makes it difficult to accept the purified product market and affects the wet purification of attapulgite clay. industrialization of craft

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In this embodiment, the attapulgite clay ore is subjected to impurity removal treatment through the combined process of weathering-sieving, and the specific method is as follows:

[0027] 1. Air-dry the attapulgite clay ore until the water content is less than 18%, then soak in water to make the attapulgite clay ore absorb water to saturation and keep it for 5 hours, repeat the air-drying and soaking process once, drain and air-dry until the water content is less than 30% % get material a;

[0028] 2. Sieve the material a with a drum sieve with double-layer screens, collect the pellets between the double-layer screens to obtain enriched attapulgite mineral powder, and collect the pellets passing through the double-layer screens to obtain enriched montmorillonite ore powder, the rest is impurity material rich in opal, dolomite and basalt particles;

[0029] The aperture of the outer screen of the double-layer screen used in this embodiment is 1 mm, and the aperture of t...

Embodiment 2

[0031] In this embodiment, the attapulgite clay ore is subjected to impurity removal treatment through the combined process of freeze-thaw-sieving, and the specific method is as follows:

[0032] 1. Add water to the attapulgite clay ore to absorb water to saturation and keep the attapulgite clay ore for 5-8 hours to obtain material a, cool and freeze the material a for 24 hours, then heat and melt, repeat the freezing and melting process once, and obtain material b;

[0033] 2. Sieve the material b with a drum sieve with double-layer screens, collect the pellets between the double-layer screens to obtain attapulgite-enriched mineral powder, and collect the pellets passing through the double-layer screens to obtain enriched montmorillonite ore powder, the rest is impurity material rich in opal, dolomite and basalt particles;

[0034] The aperture of the outer screen of the double-layer screen used in this embodiment is 2 mm, and the aperture of the inner screen of the double-l...

Embodiment 3

[0036] In this embodiment, the attapulgite clay ore is subjected to impurity removal treatment through the combined process of weathering-sieving, and the specific method is as follows:

[0037] 1. Air-dry the attapulgite clay ore until the water content is less than 18%, then soak in water to make the attapulgite clay ore absorb water to saturation and keep it for 8 hours, repeat the air-drying and soaking process once, drain and air-dry until the water content is less than 30% % get material a;

[0038] 2. Sieve the material a with a drum sieve with double-layer screens, collect the pellets between the double-layer screens to obtain enriched attapulgite mineral powder, and collect the pellets passing through the double-layer screens to obtain enriched montmorillonite ore powder, the rest is impurity material rich in opal, dolomite and basalt particles;

[0039] The aperture of the outer screen of the double-layer screen used in this embodiment is 1.5 mm, and the aperture of...

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Abstract

The invention discloses a method for removing impurities from attapulgite clay ores, which is characterized by being used for pretreating the attapulgite clay ores by using weathering and screening or freeze thawing and screening combined processes. In the invention, the attapulgite clay ores are screened to remove impurities by using different weather resistance properties of various ores without crushing the attapulgite clay ores. The method provided by the invention is simple and has low energy consumption and low cost.

Description

1. Technical field [0001] The invention relates to a non-metallic ore beneficiation method, in particular to a method for removing impurities from attapulgite clay ore. 2. Background technology [0002] Attapulgite clay is a characteristic non-metallic mineral resource in my country. According to the latest mineral geological survey report, the proven reserves of attapulgite clay in Jiangsu and Anhui areas are 150 million tons. Jiangsu and Anhui areas have become the largest attapulgite clay ore concentration area in the world. [0003] At present, attapulgite clay is used as raw material to produce activated clay, desiccant, adsorbent, salt-resistant mud, fertilizer and pesticide additives, feed additives, adhesives, etc., which have been widely recognized by the market. Attapulgite clay is known as "the king of a thousand soils, with ten thousand uses". All kinds of attapulgite products basically use the two characteristics of attapulgite's excellent adsorption and colloid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/26
Inventor 陈天虎谢晶晶谢巧勤
Owner HEFEI UNIV OF TECH
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