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Preparation system for preparing floor gypsum powder from construction waste and use method of preparation system

A preparation system, gypsum powder technology, applied in the direction of climate sustainability, sustainable waste treatment, grain treatment, etc., can solve problems such as the limitation of waste gypsum board reuse, the adverse effects of gypsum board strength and shape, and achieve high production efficiency , Consistent residence time, fuel saving effect

Active Publication Date: 2022-04-15
CHINA CONSTR SECOND ENG BUREAU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Preparation system for preparing floor gypsum powder from construction waste and use method of preparation system

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Embodiment Construction

[0030] Such as figure 1 As shown, a preparation system for making floor gypsum powder from construction waste, using waste gypsum boards to prepare floor gypsum powder, including a crushing subsystem 1 for crushing waste gypsum boards into coarse gypsum powder, impurities in coarse gypsum powder , impurities with a true density greater than gypsum are recorded as heavy impurities, and impurities with a true density lower than gypsum are recorded as light impurities; heavy impurities include rust and gravel, and light impurities include organic stains, paper fibers, waste paint and waste rubber; prepared from construction waste The device for cleaning floor gypsum powder also includes an airflow separation device for removing heavy impurities in coarse gypsum powder, and a cyclone boiler 3 for removing light impurities in coarse gypsum powder.

[0031] The cyclone boiler 3 here is a typical cyclone separator structure, including a feed inlet, a flue gas outlet for discharging g...

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Abstract

The invention relates to the technical field of methods or equipment specially suitable for incinerating waste or low-grade fuel, and discloses a preparation system for preparing floor gypsum powder from construction waste and a use method of the preparation system. Comprising a crushing subsystem for crushing waste gypsum boards into coarse gypsum powder, an airflow sorting device for removing heavy impurities in the coarse gypsum powder, and a cyclone boiler for removing light impurities in the coarse gypsum powder, a discharge port of the crushing subsystem is communicated with a feed port of the airflow sorting device along the conveyor; and a flue gas outlet of the cyclone boiler is communicated with the desulfurization and denitrification device. According to the invention, light impurities and gypsum in the coarse gypsum powder are blown out through the Venturi tube to form a pneumatic conveying mixture with air, and then the mixture is mixed with fuel gas for combustion in the cyclone boiler, so that the removal of the light impurities, the calcination of gypsum particles and the collection of the gypsum particles are completed in one step.

Description

technical field [0001] The invention relates to the technical field of methods or equipment specially suitable for incineration of waste or low-grade fuels, in particular to a preparation system for making floor gypsum powder from construction waste and its application method. Background technique [0002] In the process of building decoration, the application of gypsum board is very common. It is not only used in ceiling, but also used in wall sound insulation and wall insulation, or used as decorative board / floor. This means that every time renovation or redecoration or house demolition, a huge amount of discarded gypsum boards will be generated 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 achieve regeneration. However, since waste gypsum board contains a lot of impurities, the proportion of waste gypsum board powder m...

Claims

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Application Information

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Patent Type & Authority Applications(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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