Citric acid gypsum hollow block and preparation method thereof

A citric acid gypsum and hollow block technology, which is applied in the field of gypsum hollow blocks, can solve problems such as difficulty in utilization, environmental pollution, and prolonged setting time, and achieve the effect of excellent color and alleviating environmental pollution problems

Inactive Publication Date: 2013-03-13
ANHUI SENKE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

1.5 tons of citric acid gypsum can be obtained for every 1 ton of citric acid produced; because citric acid gypsum contains certain residual acid and organic matter (mycelium), the strength of the produced hemihydrate gypsum is low, the setting time becomes longer, and it is difficult to use; It has not been effectively utilized for a long time and has been accumulated in large quantities, causing pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of citric acid gypsum hollow block, raw materials and parts by weight: citric acid gypsum powder (β type): 63.25 parts; desulfurized gypsum powder (β type): 22 parts; reinforcing agent: 2.5; neutralizing agent parts: 10.5 parts ; Water reducing agent: 1 part; water to material ratio: 0.75 part.

[0031] The production steps are as follows:

[0032] (1) Ingredients: All raw materials are prepared in proportion through the automatic metering device;

[0033] (2) Material transportation: the raw materials are automatically transported to the designated storage tank through the transportation device;

[0034] (3) Stirring: First add the specified proportion of water to the mixing drum, turn on the mixer, add the specified proportion of retarder, and then put other materials into the mixing drum and mix for about 30 seconds;

[0035] (4) Forming: Inject the evenly stirred slurry into the mold cavity for forming, and the semi-finished product can be obtained in about 15 minutes...

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PUM

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Abstract

The invention discloses a citric acid gypsum hollow block and its preparation method. The citric acid gypsum hollow block comprises the following raw materials by weight: 59-69.95 parts of citric acid gypsum powder (beta type); 20-25 parts of desulfurized gypsum powder (beta type); 2-3 parts of a reinforcing agent; 8-12 parts of a neutralizer; and 0.05-1 part of a water reducer. The hollow block provided in the invention has an excellent color better (whiter than ordinary gypsum hollow blocks), is more conducive to wall decoration, and has the effects of light weight, waterproofness as well as thermal insulation. With all indexes meeting the JC / T698-2010 and GB6566-2001 building materials radionuclide limited standards of gypsum blocks, the hollow block is also in line with the requirements of low carbon, environmental protection, energy saving and consumption reduction, and recycling economy, and alleviates the environmental pollution problem to certain extent.

Description

Technical field: [0001] The invention mainly relates to a hollow gypsum block, in particular to a hollow block of citric acid gypsum and a preparation method thereof. Background technique: [0002] Gypsum hollow block is generally a new type of interior partition wall material produced by building gypsum. Because of its low cost, light weight, waterproof, and conform to low carbon, environmental protection, energy saving, consumption reduction, simple production, good insulation effect, strong and durable, etc. The advantages are widely used in the partition walls of buildings, so creating a new industrial waste as the main raw material has become the leading direction for the development of gypsum hollow blocks. [0003] The main raw material citrate gypsum in the present invention is an industrial waste slag mainly composed of calcium sulfate dihydrate, which is produced when the citric acid is produced by the deep method: citrate gypsum. For every ton of citric acid produced, 1...

Claims

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Application Information

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