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Method for producing gypsum plaster board by using calcium lignosulphonate/naphthalene-series composite water-reducing agents

A technology of plasterboard and composite water reducer, which is applied in the production of plasterboard, wood calcium and naphthalene composite water reducer, which can solve the problem of large water demand, waste of water resources and limited production capacity in gypsum board production and other issues, to achieve the effect of saving resources and energy, reducing water consumption, and reducing the ratio of water to paste

Pending Publication Date: 2018-11-30
泰山石膏(辽宁)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the traditional gypsum board production requires a lot of water and a large amount of evaporation, so that there is a lot of waste of water resources, high energy consumption, and limited production capacity

Method used

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  • Method for producing gypsum plaster board by using calcium lignosulphonate/naphthalene-series composite water-reducing agents

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] As shown in the figure, the desulfurized gypsum from different origins is mixed with raw materials according to a certain proportion 1, the mixed raw materials enter the silo and the raw materials are homogenized 2 and mixed. , control the water of crystallization at 10% to 11%, the clinker calcined in the first step is calcined at a low temperature and slow in the second part 4, the calcination time is 25min, the powder output temperature is controlled at 155°C, after the first step calcination and the second part After calcining, the cooked powder enters the ball mill for grinding 5, and before the cooked powder enters the ball mill, a quantitative wood calcium water reducer is added through the screw conveyor 11; the ground cooked powder enters the storage bin for aging 6, and the cooked powder After the powder is aged, water is added and ingredients are added for slurry preparation 7. At the same time, quantitative naphthalene-based water reducer is added through a s...

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Abstract

The invention provides a method for producing a gypsum plaster board by using calcium lignosulphonate / naphthalene-series composite water-reducing agents. The method comprises the following steps: adding raw materials into desulfurized gypsum, allowing the added raw materials to enter a silo, carrying out homogenizing and uniform mixing, subjecting the uniformly-mixed raw materials to primary calcination so as to obtain a clinker, subjecting the clinker obtained by primary calcination to secondary calcination, allowing an obtained clinker to enter a ball mill for grinding to obtain clinker powder, and adding a quantitative calcium lignosulphonate water-reducing agent through a screw conveyor; placing obtained clinker powder into a material storage bin, subjecting the clinker powder to aging, after the clinker powder is aged, adding water, carrying out batching so as to prepare a slurry, and adding a quantitative naphthalene water-reducing agent at the same time; and after the slurry isprepared, carrying out molding of a gypsum board, drying, segmenting and packaging so as to complete production of the gypsum plaster board. According to the invention, the calcium lignosulphonate water-reducing agent is added through the screw conveyor before the clinker is ground into powder, so standard thickness of gypsum powder is reduced, and the evaporation amount of used water is decreased; the naphthalene water-reducing agent is added in the preparation process of the slurry through the screw conveyor, so the usage amount of water for production is reduced; and the method provided bythe invention is applicable to production of the gypsum plaster board.

Description

technical field [0001] The invention proposes a production method of plasterboard in the field of construction, which mainly uses wood calcium and naphthalene composite water reducing agents. Specifically, it is a method for producing paper-faced gypsum boards by applying wood calcium and naphthalene-based composite water reducers. Background technique [0002] Paper-faced gypsum board is a widely used construction and decoration material with the characteristics of light weight, sound insulation, high strength and fast construction speed. Using natural gypsum or industrially modified gypsum as raw material, it goes through the processes of calcining powder, stirring pulp, foaming sticky paper forming, drying, dividing and packaging. [0003] However, the traditional gypsum board production requires a lot of water and a large amount of evaporation, so that there is a lot of waste of water resources, high energy consumption, and limited production capacity. Based on this cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/144C04B24/18C04B24/00
Inventor 张伟王锐吕振涛吕杨杨伟
Owner 泰山石膏(辽宁)有限公司
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