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Preparation method of gypsum board coagulant and gypsum board coagulant prepared by preparation method

A coagulant and gypsum board technology, applied in the field of gypsum board coagulant, can solve the problems of disturbing the production stability of gypsum board, reducing the compressive strength of gypsum board, affecting the pulverization effect of ball mill, etc., and achieve small bulk density and particle size distribution , the time required for coagulation is short, and the effect of promoting coagulation is good

Inactive Publication Date: 2020-09-01
CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many kinds of coagulant accelerators that can be selected by factories, such as potassium sulfate, waste boards or scraps from ball milling. Although these coagulant accelerators have certain coagulation accelerator effects, they also have certain shortcomings.
If the amount of potassium sulfate is too much, a large amount of potassium ions will be introduced, which will lead to low strength and poor bonding performance of the gypsum board; while waste boards or scraps contain a lot of paper scraps, which will affect the pulverization effect of the ball mill and disrupt the gypsum board. the stability of the board production, it may even reduce the compressive strength of the plasterboard

Method used

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  • Preparation method of gypsum board coagulant and gypsum board coagulant prepared by preparation method
  • Preparation method of gypsum board coagulant and gypsum board coagulant prepared by preparation method
  • Preparation method of gypsum board coagulant and gypsum board coagulant prepared by preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0024] According to the waste board with a certain water content and impurity content provided in Table 1 as raw material, and according to the equipment feed rate and operating frequency set in Table 1, the gypsum board coagulant is prepared, wherein Examples 1-3 and Comparative Examples The equipment used in 2-3 is the vertical impact mill of the model CSM410-V manufactured by Alpine Company, and the equipment used in Comparative Example 1 is the planetary ball mill of the model QXQM-2.

[0025] Table 1

[0026]

[0027] Performance Testing

[0028] 1. Use the gypsum board coagulant prepared by above-mentioned embodiment and comparative example to carry out the test of bulk density and its specific surface area respectively, the specific surface area of ​​coagulant is measured by Blaine specific surface area measuring instrument to it, and the measuring method of bulk density is as follows :

[0029] Bulk density test method: the gypsum board coagulant in the embodiment...

Embodiment 2

[0043] Example 2 Compared with Comparative Example 2, the impact mill is also used to prepare the coagulation accelerator for gypsum board. The lower the moisture content of the waste board, the shorter the time required for the coagulation of the gypsum board, and the better coagulation-accelerating effect of the coagulation accelerator. And the strength of gypsum board has also been improved to a certain extent. Embodiment 3 Compared with comparative example 3, the coagulation accelerator for gypsum board is also prepared by using impact mill, the higher the impurity content of the waste board, the shorter the time required for gypsum board coagulation, and the coagulation accelerator effect of the coagulation accelerator is better, The strength of gypsum board has also been improved to a certain extent.

[0044] In summary, compared with the gypsum board coagulant prepared by ball mill, the coagulant for gypsum board prepared by impact mill has smaller bulk density, larger ...

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Abstract

The invention discloses a preparation method of a gypsum board coagulant. The raw material of the coagulant is waste generated during gypsum board production; the gypsum board coagulant is prepared after the waste is sent into an impact mill to be crushed. The invention also discloses application of the gypsum board coagulant prepared by the preparation method of the gypsum board coagulant in a gypsum board. According to the preparation method of the gypsum board coagulant provided by the invention, the waste is used as the raw material of the coagulant, so that the cyclic utilization of the waste is realized, the cost is saved, benefits are brought to a factory, and the requirements of environmental protection are met; the gypsum board coagulant prepared by utilizing the impact mill is smaller in volume weight and particle size distribution and larger in specific surface area, so that the coagulant has a better coagulation accelerating effect to meet production requirements.

Description

technical field [0001] The present application relates to but not limited to the technical field of new building materials, in particular to a preparation method of a gypsum board coagulant and the prepared gypsum board coagulant. Background technique [0002] When producing paper-faced gypsum board, the setting time of desulfurized gypsum itself often cannot meet the demand, and the factory needs to add a coagulant to make the desulfurized gypsum set as soon as possible to meet the production demand. At present, there are many kinds of coagulation accelerators available for factories to choose, such as potassium sulfate, waste boards or leftovers from ball milling. Although these coagulation accelerators have certain coagulation-accelerating effects, they also have certain shortcomings. If the amount of potassium sulfate is too much, a large amount of potassium ions will be introduced, which will lead to low strength and poor bonding performance of the gypsum board; while w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/24
CPCC04B40/0039C04B2103/10C04B18/04C04B18/241Y02W30/91
Inventor 丛宇李帆戚婷婷张赫
Owner CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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