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A preparation system for making floor gypsum powder from construction waste and using method thereof

A preparation system and technology of gypsum powder, which are applied in the directions of climate sustainability, sustainable waste treatment, grain treatment, etc., can solve the problems such as the restriction of reuse of waste gypsum board, the adverse effect of gypsum board strength and shape, etc., and achieve high production efficiency. , the residence time is consistent, and the effect of ensuring the quality of calcination

Active Publication Date: 2022-07-12
CHINA CONSTR SECOND ENG BUREAU LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved is: the waste gypsum board contains a lot of impurities that are difficult to remove, which will have an adverse effect on the strength and shape of the gypsum board made from it, which has brought serious restrictions on the reuse of waste gypsum board

Method used

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  • A preparation system for making floor gypsum powder from construction waste and using method thereof

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Embodiment Construction

[0030] like figure 1 As shown, a preparation system for making floor gypsum powder from construction waste uses waste gypsum board to prepare floor gypsum powder, including a pulverizing subsystem 1 for pulverizing the waste gypsum board into coarse gypsum powder. The impurities in the coarse gypsum powder are , impurities with a true density greater than gypsum are recorded as heavy impurities, and impurities with a true density less than gypsum are recorded as light impurities; heavy impurities include rust and gravel, and light impurities include organic stains, paper fibers, waste coatings and waste glue; prepared from construction waste The device for cleaning the floor gypsum powder also includes an airflow sorting device for removing heavy impurities in the coarse gypsum powder, and a cyclone boiler 3 for removing light impurities in the coarse gypsum powder.

[0031] The cyclone boiler 3 here is a typical structure of a cyclone separator, including a feed port, a flue ...

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Abstract

The invention relates to the technical field of a method or equipment specially suitable for incinerating waste or low-grade fuel, and discloses a preparation system for making floor gypsum powder from construction waste and a method for using the same. A crushing subsystem for crushing waste gypsum boards into coarse gypsum powder, an air separation device for removing heavy impurities in coarse gypsum powder, and a cyclone boiler for removing light impurities in coarse gypsum powder; the output of the crushing subsystem The material port leads to the feed port of the air separation device along the conveyor, and the flue gas outlet of the cyclone boiler leads to the desulfurization and denitrification device. In the present invention, the light impurities and gypsum in the coarse gypsum powder are swept out through a venturi tube to form a mixture that can be transported pneumatically with air, and then mixed and burned with gas in a cyclone boiler to complete the removal of light impurities and the removal of gypsum particles in one step. Calcination, and collection of gypsum particles.

Description

technical field [0001] The invention relates to the technical field of a method or equipment specially suitable for incinerating waste or low-grade fuel, in particular to a preparation system for making floor gypsum powder from construction waste and a method for using the same. Background technique [0002] In the process of building decoration, the application of gypsum board is extremely common. It is not only used in ceilings, but also in wall sound insulation and wall insulation, or as decorative boards / floors. This means that every renovation or redecoration or demolition of a house will generate a huge amount of waste gypsum board as construction waste. [0003] Compared with other construction waste, the composition of gypsum board is relatively simple, so it can be mixed into the raw material of gypsum board after grinding to realize regeneration. However, since waste gypsum board contains a lot of impurities, the proportion of waste gypsum board powder mixed into ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C21/00B02C23/00
CPCY02W30/91
Inventor 李辉郑军委王树森王健孙孝蕾杨帅
Owner CHINA CONSTR SECOND ENG BUREAU LTD
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