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Preparation process of environment-friendly pollution-free regenerated gypsum powder for building materials

A preparation process and technology of gypsum powder, which is applied in the field of recycled gypsum powder preparation process, can solve the problems of occupying land resources, imperfect technology, environmental pollution, etc., and achieve the effects of reducing production costs, reducing production costs, and convenient processing

Inactive Publication Date: 2022-02-15
泰山石膏(襄阳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an environmentally friendly and pollution-free regenerated gypsum powder preparation process for building materials, to solve the above-mentioned background technology. However, the preparation of gypsum powder for building materials currently on the market has been impossible due to relatively imperfect technology. To meet people's needs, the gypsum powder in the prior art is often prepared and processed through natural gypsum ore. This method not only increases the cost of gypsum, but also makes the ore scarce due to the large amount of natural gypsum ore collected. The waste gypsum in the construction waste has not been effectively treated, which will not only pollute the environment, but also occupy unnecessary land resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The invention provides a technical solution: a preparation process of environmentally friendly and pollution-free recycled gypsum powder for building materials, which includes the following steps in sequence:

[0025] (1) Pretreatment steps of waste gypsum: Firstly, rough select the recycled waste building materials, pick out the waste with gypsum, and break them into large pieces and wait for standby. The broken pieces are 50mm, and the crusher adopts jaw pulverizer;

[0026] (2) Waste gypsum grinding treatment step: add the large pieces of waste building material gypsum in step (1) to a pulverizer for crushing, and wait for standby after the crushing is completed;

[0027] (3) Waste gypsum powder sorting and processing steps: first put the waste gypsum crushed in step (2) into the drying box for drying treatment, so that the waste gypsum powder is in a dry state, and then the waste gypsum powder in the waste gypsum powder is separated by magnetic separation The metal...

Embodiment 2

[0033] The invention provides a technical solution: a preparation process of environmentally friendly and pollution-free recycled gypsum powder for building materials, which includes the following steps in sequence:

[0034] (1) Waste gypsum pretreatment step: First, rough selection of recycled waste building materials, pick out the waste with gypsum, and break into large pieces and wait for standby. The broken pieces are 55mm, and the crusher adopts jaw pulverizer;

[0035] (2) Waste gypsum grinding treatment step: add the large pieces of waste building material gypsum in step (1) to a pulverizer for crushing, and wait for standby after the crushing is completed;

[0036] (3) Waste gypsum powder sorting and processing steps: first put the waste gypsum crushed in step (2) into the drying box for drying treatment, so that the waste gypsum powder is in a dry state, and then the waste gypsum powder in the waste gypsum powder is separated by magnetic separation The metal is sorte...

Embodiment 3

[0042] The invention provides a technical solution: a preparation process of environmentally friendly and pollution-free recycled gypsum powder for building materials, which includes the following steps in sequence:

[0043] (1) Pretreatment steps of waste gypsum: Firstly, the recycled waste building materials are roughly selected, and the waste with gypsum is sorted out, and then broken into large pieces for later use. The broken pieces are 60mm, and the crusher adopts jaw pulverizer;

[0044] (2) Waste gypsum grinding treatment step: add the large pieces of waste building material gypsum in step (1) to a pulverizer for crushing, and wait for standby after the crushing is completed;

[0045] (3) Waste gypsum powder sorting and processing steps: first put the waste gypsum crushed in step (2) into the drying box for drying treatment, so that the waste gypsum powder is in a dry state, and then the waste gypsum powder in the waste gypsum powder is separated by magnetic separation...

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Abstract

The invention discloses a preparation process of environment-friendly pollution-free regenerated gypsum powder for building materials. The preparation process sequentially comprises the following steps: pretreatment of waste gypsum; a waste gypsum grinding treatment step; sorting and treatment of the waste gypsum powder; a waste material impurity removal treatment step; dehydration of the gypsum slurry; and steps of roasting of the gypsum powder and grinding of the finished product gypsum. According to the preparation process of the environment-friendly pollution-free regenerated gypsum powder for the building materials, waste gypsum in construction waste is adopted as a raw material, so that the gypsum in the construction waste is treated, recycled and reused, the production cost of the gypsum can be reduced, natural ore does not need to be continuously exploited, and the preparation process is more environment-friendly and economical. Besides, after the waste gypsum is smashed, metal impurities in the waste are separated and sorted out in a magnetic separation mode, in this way, sorting can be more convenient, and the sorted metal is more convenient to treat in the later period.

Description

technical field [0001] The invention relates to the technical field of regeneration of waste gypsum powder, in particular to an environmentally friendly and pollution-free regenerated gypsum powder preparation process for building materials. Background technique [0002] The application of gypsum has a long history, but it was simply used to make chalk, putty, tofu and simple handicrafts in the early stage, lacking in-depth research and development, so it has not attracted people's attention. In the late 1970s, especially since the implementation of reform and opening up in my country, with the rapid development of the economy, the demand for gypsum in buildings, building materials and other related industries that consume a lot of gypsum has increased sharply, and gypsum has attracted more and more attention. At present, a huge new industry has been formed. In recent years, along with the development of the gypsum products industry, various gypsum powders for different purp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B11/00C04B11/02
CPCC04B11/005C04B11/02
Inventor 卢保举韩复强黄猛猛何争琼尹衍伟
Owner 泰山石膏(襄阳)有限公司
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