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Purification technology of attapulgite clay

An attapulgite clay and process technology, applied in inorganic chemistry, non-metallic elements, silicon compounds, etc., can solve problems such as adverse effects of adsorption performance and colloidal performance, achieve retention of high adsorption performance and colloidal performance, improve colloidal performance and Adsorption performance, effect of retaining particle dispersibility

Inactive Publication Date: 2018-09-11
苏州中材非金属矿工业设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This purification process overcomes the shortcomings of the existing technology that it is difficult to realize industrial production and obtain qualified purified products. However, the use of additives will have a negative impact on the adsorption performance and colloidal performance of the product.

Method used

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  • Purification technology of attapulgite clay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The purification process of the attapulgite clay of the present embodiment comprises the steps:

[0047] (1) crushing the low-grade attapulgite clay raw ore with a grade of 35% to below 2 cm;

[0048] (2) After adding an appropriate amount of water to the crushed product, mash, the mashing concentration is 15%, and the mashing time is 30 minutes;

[0049] (3) The product after mashing is sieved, and the sieving particle size is 45 μm, and the coarse particles are directly thrown to the tail;

[0050] (4) Utilize a high-pressure homogenizer to carry out high-pressure high-shear dispersion to the classified fine particles, and the pressure is 200MPa;

[0051] (5) The dispersed product is subjected to classification and purification, and the classification particle size is 3 μm;

[0052] (6) Use a vacuum freeze dryer to freeze-dry the fine-grained products after classification, the freezing temperature <-30°C, and the vacuum degree <20Pa to obtain a concentrate product w...

Embodiment 2

[0055] The purification process of the attapulgite clay of the present embodiment comprises the steps:

[0056] (1) crushing the low-grade attapulgite clay raw ore with a grade of 30% to below 2 cm;

[0057] (2) After adding an appropriate amount of water to the crushed product, mash, the mashing concentration is 20%, and the mashing time is 20 minutes;

[0058] (3) The product after mashing is sieved, and the sieving particle size is 74 μm, and the coarse particles are directly thrown to the tail;

[0059] (4) Utilize a high-pressure homogenizer to carry out high-pressure high-shear dispersion to the classified fine particles, and the pressure is 300MPa;

[0060] (5) The dispersed product is subjected to classification and purification, and the classification particle size is 2 μm;

[0061] (6) Use a vacuum freeze dryer to freeze-dry the fine-grained products after classification, the freezing temperature <-30 ° C, and the vacuum degree < 20 Pa to obtain a concentrate produ...

Embodiment 3

[0064] The purification process of the attapulgite clay of the present embodiment comprises the steps:

[0065] (1) crushing the low-grade attapulgite clay ore with a grade of 27% to below 2 cm;

[0066] (2) After adding an appropriate amount of water to the crushed product, mash it, the mashing concentration is 30%, and the mashing time is 30 minutes;

[0067] (3) The product after mashing is sieved, and the sieving particle size is 74 μm, and the coarse particles are directly thrown to the tail;

[0068] (4) Utilize a high-pressure homogenizer to carry out high-pressure high-shear dispersion to the classified fine particles, and the pressure is 200MPa;

[0069] (5) Carrying out classification and purification to the dispersed product, the classification particle size is 1 μm;

[0070] (6) Use a vacuum freeze dryer to freeze-dry the fine-grained product after classification, the freezing temperature <-30 ° C, and the vacuum degree < 20 Pa to obtain a concentrate product wit...

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Abstract

The invention provides a purification technology of attapulgite clay. The purification technology of the attapulgite clay comprises the following steps of 1, crushing low-grade attapulgite clay raw ore to 2 cm or below; 2, pulping the product crushed in step 1; 3, screening the pulped product in step 2, and discarding tailings of screened coarse particles; 4, conducting high-pressure homogenous dispersion on screened fine particles in step 3; 5, conducting graded purification on the product which is subjected to high-pressure homogenous dispersion in step 4; 6, freeze-drying a fine product which is graded and purified in step 5 to obtain a concentrate product. According to the production technology of the attapulgite clay, the low-grade raw ore is adopted to obtain the high-grade concentrate, and the attapulgite in the obtained product is fully separated; meanwhile, it is guaranteed that the performance of the attapulgite clay is not influenced by agentia like a dispersing agent, and the adsorbing performance and the colloidal performance of the attapulgite product purified through a wet process are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of clay mineral purification, and relates to a purification process of attapulgite clay, in particular to a purification process of high-grade attapulgite clay. Background technique [0002] Attapulgite clay refers to a clay mineral with attapulgite as the main component. Attapulgite is a crystalline hydrated magnesium aluminum silicate mineral, which has a unique layer chain structure. The crystals are needle-like, fibrous or fibrous, and has unique dispersion, high temperature resistance, and salt-alkali resistance. Excellent colloidal properties and high adsorption and decolorization ability. Due to the special physical and chemical properties and technological properties of attapulgite clay, it has been widely used in petroleum, chemical industry, building materials, papermaking, medicine, agriculture, etc. It is an important boost for the development and growth of mineral functional materials in my cou...

Claims

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Application Information

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IPC IPC(8): C01B33/40
CPCC01B33/40C01P2006/22C01P2006/80
Inventor 程飞飞于阳辉刘克起杨启帆贺洋
Owner 苏州中材非金属矿工业设计研究院有限公司
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