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Method for preparing water body defluorination material from steam pressure concrete blocks

A technology for concrete blocks and fluorine materials, which is applied in the field of waste resource utilization, can solve the problems of high cost of fluorine removal, secondary pollution of steam pressurized concrete blocks, etc., and achieves the effect of high specific surface energy

Active Publication Date: 2017-12-15
YANGTZE NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above-mentioned deficiencies existing in the prior art, the object of the present invention is to provide a method for preparing water body defluoridation materials by using waste steam-pressurized concrete blocks, so as to solve the problem of high cost of defluorination of existing chemical agents, and at the same time solve the problem of waste Secondary Pollution of Steam Pressurized Concrete Blocks

Method used

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  • Method for preparing water body defluorination material from steam pressure concrete blocks
  • Method for preparing water body defluorination material from steam pressure concrete blocks
  • Method for preparing water body defluorination material from steam pressure concrete blocks

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Embodiment 1

[0027] In this embodiment, the method for preparing a water body defluoridation material using waste steam pressurized concrete blocks is as follows:

[0028] (1) Use a small hammer crusher to crush the discarded steam-pressurized concrete blocks, and control the output particle size to ≤6mm.

[0029](2) Put the material crushed in step (1) into a ball mill for ball milling. During the ball milling process, add lignosulfonate with a mass of 0.07% of the mass of the ball milled material for surface dispersion treatment, and control the ball milling time to 40 minutes.

[0030] (3) The ground material is selected and separated by an airflow classifier, and the particles with a particle size of ≤80 μm are collected to obtain the water body defluoridation material.

Embodiment 2

[0032] In this embodiment, the method for preparing a water body defluoridation material using waste steam pressurized concrete blocks is as follows:

[0033] (1) Use a small hammer crusher to crush the discarded autoclaved aerated concrete blocks, and control the output particle size to ≤6mm.

[0034] (2) Put the crushed material in step (1) into a ball mill for ball milling. During the ball milling process, add 0.08% lignosulfonate, 0.04% ethylene glycol and 0.05% triisopropanol, respectively Amines were used for surface dispersion treatment, and the ball milling time was controlled to be 35 minutes.

[0035] (3) The ground material is selected and separated by an airflow classifier, and the particles with a particle size of ≤80 μm are collected to obtain the water body defluoridation material.

[0036] figure 2 The microscopic scanning electron microscope picture of the water body defluoridation material prepared for Example 2. It can be seen from the figure that the sur...

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Abstract

The invention discloses a method for preparing a water body defluorination material from steam pressure concrete blocks. The method comprises the following steps: by taking waste steam pressure concrete blocks as raw materials, crushing, performing bal milling, separating a powder material after ball milling, and collecting granules of which the particle size is less than 80mu m, thereby obtaining the water body defluorination material. The building waste, namely the steam pressure concrete blocks, is applied to the field of fluoride-containing sewage treatment, the prepared water body defluorination material is rapid in reaction speed in the water body defluorination process, is free of extreme mixing amount, high in utilization efficiency and stable in defluorination effect and can be operated at room temperature, and the resource utilization efficiency of the waste steam pressure concrete blocks is improved.

Description

technical field [0001] The invention belongs to the field of resource utilization of waste, and in particular relates to a method for preparing a water body defluorination material by using steam-pressurized concrete blocks. Background technique [0002] Steam pressurized concrete blocks are made by adding a small amount of aluminum powder as an air-entraining agent to the ingredients of calcareous materials (such as cement, lime) and natural siliceous materials (such as sand, fly ash, slag). , gas expansion, pre-cured cutting, and then cured by high-pressure steam is a porous silicate block. Autoclaved aerated concrete block is an energy-saving and environmentally friendly material with superior performance. It has the advantages of good thermal insulation function, reliable strength, high construction efficiency, low production energy consumption, firm and reliable wall pipeline embedding, and wide source of raw materials. In September 2005, the State Council clearly requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/28B01J20/30C02F1/28C02F101/14
CPCB01J20/041B01J20/06B01J20/08B01J20/103B01J20/28016B01J2220/4887C02F1/281C02F2101/14
Inventor 刘东升周丽新李巍陈昔勇张鹏吕利平时建伟
Owner YANGTZE NORMAL UNIVERSITY
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