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Gypsum hollow block and semi-dry production method of same

A hollow block and production method technology, applied in the field of hollow block production for building houses, can solve the problems of large storage yard, long cycle, high cost, etc., and achieve the effect of large storage yard and high cost

Inactive Publication Date: 2016-10-05
ANHUI SENKE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Remove the water requirement for gypsum crystallization (only about 18.62%), and the excess free water (greater than 60%) causes the problems of large drying capacity, high cost, long cycle and large storage yard, which restricts the development of gypsum hollow blocks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A semi-dry method for producing gypsum hollow blocks, comprising the following steps:

[0023] 1) Prepare 24Kg of water at 5°C, then slowly add 0.1Kg of methylcellulose and 0.2Kg of carboxymethylcellulose, and add 1Kg of quicklime while stirring Homogenously, a water mixture is obtained;

[0024] 2) Weigh 80Kg of building gypsum powder prepared by 0.6Kg citric acid, 0.2Kg naphthalenesulfonate formaldehyde condensate, 10Kg fly ash and desulfurized gypsum and mix evenly to obtain a mixed powder;

[0025] 3) Add the mixed powder of step 2) and the water mixture of step 1) into the mixer for high-speed stirring at a stirring speed of 500-600r / min to obtain a semi-dry gypsum colloid, and then distribute the material evenly to the gypsum through the gypsum mortar conveying device The hollow block forming machine is combined with mold cavity, external pressure is formed, and then hydraulic pressure is ejected from the cavity to obtain a gypsum hollow block.

[0026] Accordin...

Embodiment 2

[0028] A semi-dry method for producing gypsum hollow blocks, comprising the following steps:

[0029] 1) Prepare 27Kg of water at 10°C, then slowly add 0.2Kg of methylcellulose and 0.3Kg of carboxymethylcellulose, and add 1.5Kg of slag during the melting process of methylcellulose and carboxymethylcellulose, while Stir well to obtain a water mixture;

[0030] 2) Weigh 90Kg of building gypsum powder prepared by 0.8Kg citric acid, 0.4Kg naphthalenesulfonate formaldehyde condensate, 15Kg fly ash and titanium gypsum and mix evenly to obtain a mixed powder;

[0031] 3) Add the mixed powder of step 2) and the water mixture of step 1) into the mixer for high-speed stirring at a stirring speed of 500-600r / min to obtain a semi-dry gypsum colloid, and then distribute the material evenly to the gypsum through the gypsum mortar conveying device The hollow block forming machine is combined with mold cavity, external pressure is formed, and then hydraulic pressure is ejected from the cavit...

Embodiment 3

[0034] A semi-dry method for producing gypsum hollow blocks, comprising the following steps:

[0035] 1) Prepare 36Kg of water at 20°C, then slowly add 0.15Kg of methyl cellulose and 0.2Kg of carboxymethyl cellulose, and add 2Kg of cement while stirring Homogenously, a water mixture is obtained;

[0036] 2) Weigh 0.7Kg of citric acid, 0.5Kg of naphthalenesulfonate formaldehyde condensate, 20Kg of fly ash and 90Kg of building gypsum powder prepared by phosphogypsum production and mix evenly to obtain a mixed powder;

[0037] 3) Add the mixed powder of step 2) and the water mixture of step 1) into the mixer for high-speed stirring at a stirring speed of 500-600r / min to obtain a semi-dry gypsum colloid, and then distribute the material evenly to the gypsum through the gypsum mortar conveying device The hollow block forming machine is combined with mold cavity, external pressure is formed, and then hydraulic pressure is ejected from the cavity to obtain a gypsum hollow block.

...

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PUM

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Abstract

The invention proposes a gypsum hollow block, which is composed of the following raw materials in parts by weight: building gypsum powder: 80-90 parts, fly ash: 10-20 parts, water reducer: 0.2-0.5 parts, Coagulant: 0.6-0.8 parts, methyl cellulose: 0.1-0.2 parts, carboxymethyl cellulose: 0.2-0.3 parts, activator: 1-2 parts; wherein, the weight ratio of water to building gypsum powder is 0.3 -0.4:1, the water temperature is 5-25℃. In the semi-dry production method of the gypsum hollow block, the mixed powder and water mixture are added to a mixer for high-speed stirring at a stirring speed of 500-600r / min to obtain a semi-dry gypsum colloid, which is then uniformly distributed to Gypsum hollow block molding machine combined mold cavity, external pressure molding, and then hydraulically ejected from the mold cavity. The gypsum hollow block produced by the production method has a low water-to-paste ratio, and the free water of the gypsum block is very low after forming. After forming, the gypsum block can be sent to the construction site to directly build walls, saving storage yards and exempting from drying (natural and artificial drying).

Description

technical field [0001] The invention belongs to the technical field of producing hollow blocks for building houses, and in particular relates to a gypsum hollow block and a semi-dry production method thereof. Background technique [0002] In the prior art, the wall materials for construction mainly include: dry coal bricks, sintered ordinary bricks, aerated block bricks, ordinary chemical gypsum blocks, aerated concrete blocks, pearl shale hollow blocks and cement hollow blocks Wait. In order to facilitate construction and achieve the purpose of heat preservation, sound insulation, energy saving and efficiency enhancement, hollow blocks of various structures have emerged as the times require. In order to ensure the fluidity of the mixture of gypsum powder and water in mechanical production, the weight ratio of water to gypsum (that is, the water-plaster ratio) of the gypsum hollow blocks produced for the inner wall of the building is generally 0.8-0.9:1, and some gypsum ( ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B26/28
Inventor 张庚福
Owner ANHUI SENKE NEW MATERIAL
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