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Preparation method of low-cost humidifying plastering gypsum

A low-cost technology for plaster plastering, which is applied in the field of plaster plastering and can solve problems such as the decline in anti-cracking performance

Inactive Publication Date: 2020-10-30
湖州五好建材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the condition of the same dosage, the total surface area of ​​fine sand is larger, while that of coarse sand is smaller, while the traditional process usually uses powdery quartz sand, which will bring anti-cracking after exceeding a certain thickness. performance degradation

Method used

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  • Preparation method of low-cost humidifying plastering gypsum

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing low-cost humidity-adjusting plaster plaster, comprising the following steps:

[0019] A. After the desulfurized gypsum is pre-dried at 82°C, it enters the fluidized calciner, calcined at 128°C, and then grinds it in an impact mill, and ages after cooling;

[0020] B. Stir the aged desulfurized gypsum and caustic white mud slag evenly, grind them repeatedly, and pass through a 325-mesh sieve;

[0021] C. Then add hydroxypropyl methylcellulose, lignocellulose, zinc oxide, Bonet and super high gel protein powder, stir evenly, grind and pass through a 200-mesh sieve.

[0022] The aging time in the described step A is 9 days.

[0023] In the step B, the causticizing white mud slag is causticizing white mud slag recovered from papermaking alkali with a water content of 12%.

[0024] In the step C, the raw material of the super high gelatinity protein powder is eggs. In the step C, the gel degree of the super high gel degree protein powder is 1300g*cm...

Embodiment 2

[0027] A method for preparing low-cost humidity-adjusting plaster plaster, comprising the following steps:

[0028] A. After the desulfurized gypsum is pre-dried at 90°C, it enters the fluidized calciner, calcined at 120°C, and then grinds it in an impact mill, and ages after cooling;

[0029] B. Stir the aged desulfurized gypsum and caustic white mud slag evenly, grind them repeatedly, and pass through a 325-mesh sieve;

[0030] C. Then add hydroxypropyl methylcellulose, lignocellulose, zinc oxide, Bonet and super high gel protein powder, stir evenly, grind and pass through a 200-mesh sieve.

[0031] The aging time in the described step A is 7 days.

[0032] In the step B, the causticizing white mud slag is causticizing white mud slag recovered from papermaking alkali with a water content of 15%.

[0033] In the step C, the raw material of the super high gelatinity protein powder is eggs. In the step C, the gel degree of the super high gel degree protein powder is 1200g*cm...

Embodiment 3

[0036] A method for preparing low-cost humidity-adjusting plaster plaster, comprising the following steps:

[0037] A. After the desulfurized gypsum is pre-dried at 80°C, it enters the fluidized calciner, calcined at 130°C, and then grinds in an impact mill, and ages after cooling;

[0038] B. Stir the aged desulfurized gypsum and caustic white mud slag evenly, grind them repeatedly, and pass through a 325-mesh sieve;

[0039] C. Then add hydroxypropyl methylcellulose, lignocellulose, zinc oxide, Bonet and super high gel protein powder, stir evenly, grind and pass through a 200-mesh sieve.

[0040] The aging time in the described step A is 10 days.

[0041] In the step B, the causticizing white mud slag is causticizing white mud slag recovered from papermaking alkali with a water content of 8%.

[0042] In the step C, the raw material of the super high gelatinity protein powder is eggs. In the step C, the gel degree of the super high gel degree protein powder is 1400g*cm -...

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Abstract

The invention discloses a preparation method of low-cost humidifying plastering gypsum, which comprises the following steps: calcining desulfurized gypsum to obtain beta-hemihydrate gypsum, uniformlystirring the beta-hemihydrate gypsum and causticized white sludge, and uniformly stirring the beta-hemihydrate gypsum, the causticized white sludge, hydroxypropyl methyl cellulose, lignocellulose, zinc oxide, Bonite and protein powder with ultrahigh gel degree. According to the low-cost humidifying plastering gypsum, imported rubber powder and a retarder which are high in cost do not need to be added, causticized white mud slag and protein powder with the ultrahigh gel degree are adopted for replacement, the strength of the plastering gypsum can be achieved, the cost is low, and the shrinkagecracking phenomenon cannot be caused. A small amount of Bonite is added, the strength of the plastering gypsum can be effectively improved, a small amount of zinc oxide is added as a catalyst, and humidity adjustment is facilitated.

Description

technical field [0001] The invention relates to the technical field of plaster plaster, in particular to a method for preparing plaster plaster with low-cost humidity control. Background technique [0002] At present, the bottom plaster plaster on the market is usually manufactured by mixing the purchased mixed sand with the surface plaster plaster in proportion. The performance of the product produced by this method is highly dependent on the stability of the sand. If the supply quality of the sand is unstable, It will greatly affect the product performance. Among them, the thickness and mixing ratio of sand, that is, sand particles of different particle sizes, have a great influence on the performance of plaster plaster. The reason is that in concrete, the surface of sand needs to be wrapped by gypsum slurry, and the greater the total surface area of ​​sand, the greater the total surface area of ​​sand. The more gypsum slurry that needs to wrap the surface of the sand gra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B11/036C04B14/00C04B18/24C04B22/06C04B24/14
CPCC04B11/036C04B14/00C04B18/243C04B22/06C04B24/14C04B28/144C04B2103/10C04B2111/00482C04B2201/50C04B24/383Y02W30/91
Inventor 邱忠
Owner 湖州五好建材股份有限公司
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