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Active clay and preparation thereof

A technology of activated clay and soil blocks, which is applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of long activation time, high production cost, and high energy consumption, and achieve environmental protection, reduce energy consumption, Realize the effect of cleaning

Inactive Publication Date: 2009-06-24
ANHUI PENGRUN MINING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of long activation time, high energy consumption, inability to realize production automation and high production cost in the prior art activated clay production process, and provide a kind of activated clay and its preparation method

Method used

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  • Active clay and preparation thereof

Examples

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Effect test

preparation example Construction

[0034] figure 1 It is a schematic flow diagram of the method for preparing activated clay of the present invention. Such as figure 1 As shown, the method includes the following steps:

[0035] Step 10. Crush the bentonite into bentonite blocks and mix them evenly.

[0036] The step 10 is to crush the bentonite into bentonite blocks with a particle size of less than or equal to 5 mm. The bentonite is composed of any one or more of sodium bentonite, calcium bentonite, palygorskite clay, sepiolite clay and attapulgite clay. In this implementation, the bentonite is preferably calcium-based bentonite.

[0037] Step 20: Add mineral acid to the bentonite block and mix it evenly.

[0038] The inorganic acid is composed of any one or more of phosphoric acid, sulfuric acid or hydrochloric acid. In this implementation, the inorganic acid is preferably sulfuric acid. In this embodiment, put the evenly mixed bentonite block into the silo of the mixing device, open the valve under the silo, th...

Embodiment 1

[0068] First, crush 200 kg of calcium-based bentonite into calcium-based bentonite blocks with a particle size of 5 mm; secondly, add 50 kg of sulfuric acid to the calcium-based bentonite blocks and mix them evenly; again, mix the evenly mixed calcium-based bentonite containing sulfuric acid The block is activated by microwave heating at 90°C for 25 minutes; then, 800 kg of water is added to the activated material for pulping and beating treatment, and the beating-treated mixture is filtered to separate the solid and liquid. Wash the separated solids with 800 kilograms of water and perform pressure filtration; then, repeat the washing with 800 kilograms of water and perform pressure filtration to form a filter cake; finally, the filter cake is placed in QGS -4 type multifunctional drying and crushing equipment is dried at 200°C for 4 seconds, crushed and classified so that about 90% of the materials pass through a 200-mesh sieve, then activated clay can be obtained. Technical indi...

Embodiment 2

[0070] First, crush 200 kg of calcium-based bentonite into calcium-based bentonite blocks with a particle size of 2 mm; secondly, add 50 kg of sulfuric acid to the calcium-based bentonite blocks and mix them evenly; again, mix the evenly mixed calcium-based bentonite containing sulfuric acid The block is activated by microwave heating at 80°C for 20 minutes; then, 800 kg of water is added to the activated material for pulping and beating treatment, and the beating-treated mixture is filtered to separate the solid and liquid. Wash the separated solids with 800 kilograms of water and press filter; then, repeat three times to wash the separated solids with 800 kilograms of water and press filter to make a filter cake; finally, the filter cake is placed in QGS -4 type multifunctional drying and crushing equipment is dried at 200°C for 6 seconds, crushed and classified so that about 90% of the materials pass through a 200-mesh sieve, then activated clay can be obtained. Technical indic...

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Abstract

The invention relates to a method for preparing activated clay, which comprises the following steps that: bentonite is crushed into bentonite blocks and is well mixed; inorganic acid is added to the bentonite blocks and well mixed; the well mixed bentonite blocks containing inorganic acid is activated through microwave heating; the activated material is added with water and made into a filter cake; and the activated clay can be obtained after the filter cake is dried and ground. The invention also relates to activated clay prepared by the activated clay preparation method. The method utilizes the principles and characteristics of microwaves to improve the prior activation process of activated clay production, changes activation mechanism and mode so as to achieve optimum activation effects, reduces energy consumption, realizes the automation of activated clay production, reduces production cost, and simultaneously realizes clean environment.

Description

Technical field [0001] The invention relates to an activated clay and a preparation method thereof, in particular to an activated clay prepared by microwave synergistic activation and a preparation method containing microwave synergistic activation. Background technique [0002] Activated clay is also called bleaching clay, which is made by artificial activation of natural bentonite clay minerals. It is a porous white powder with a microporous network structure and a large specific surface area. It is a strong adsorbent; it can be used for petroleum refining, animal and vegetable oil decolorization, deodorization, and purification adsorbent for insulating oil. It can also be Raw material for cosmetics, medicine and paint. The granular activated clay can be used as a catalyst for the reforming, isomerization and disproportionation of aromatics. [0003] The production of activated clay generally uses inorganic acid to activate bentonite clay mineral powder, which can be divided in...

Claims

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Application Information

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IPC IPC(8): C01B33/40
Inventor 彭高萍唐晓波王清明
Owner ANHUI PENGRUN MINING TECH
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