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Autoclave plaster brick and preparation method thereof

A gypsum block and autoclaved technology, which is applied in the field of autoclaved gypsum block and its preparation, can solve the problem of low dosage of phosphogypsum, achieve the effects of reducing land occupation and environmental pollution, good quality, and saving production costs

Active Publication Date: 2017-01-25
中盐安徽红四方新型建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides an autoclaved gypsum block and a preparation method thereof, which solves the problem that when phosphogypsum is used to prepare autoclaved gypsum blocks in the prior art, the amount of phosphogypsum added is not high, and it needs to be prepared in advance. Preprocessing Technical Issues

Method used

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  • Autoclave plaster brick and preparation method thereof
  • Autoclave plaster brick and preparation method thereof
  • Autoclave plaster brick and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The autoclaved gypsum block of this embodiment includes the following raw materials in weight percentage: phosphogypsum 30%, carbide slag 6%, fly ash 20%, aggregate 25%, slag ash 4%, composite activator 15%, composite activator It is a mixture of silica fume and sulfate solution, wherein the mass ratio of silica fume and sulfate solution is 2:0.6.

[0033] Wherein the preparation method of the composite activator is: add the silica fume and the sulfate solution into a mixer at the same time, mix and stir evenly, and the stirring time is 5 minutes to obtain a mixed material, and then send the mixed material into a digestion bin for storage It can be digested for 0.5 hours, and the water content is controlled to 6%.

[0034] According to the percentage by weight of the raw materials of this embodiment, the preparation method of the autoclaved gypsum block comprises the following steps:

[0035] S1. Weigh each raw material according to the percentage by weight of the raw ...

Embodiment 2

[0039] The autoclaved gypsum block of this embodiment includes the following raw materials in weight percentage: phosphogypsum 65%, carbide slag 6%, fly ash 12%, aggregate 5%, slag ash 2%, composite activator 10%, composite activator It is a mixture of silica fume and sulfate solution, wherein the mass ratio of silica fume and sulfate solution is 5:1.5.

[0040] Wherein the preparation method of the composite activator is as follows: the silica fume and the sulfate solution are added to the mixer at the same time, mixed and stirred evenly, and the stirring time is 8 minutes to obtain the mixed material, and then the mixed material is sent into the digestion chamber for storage It can be digested for 2 hours, and the water content is controlled to 8%.

[0041] According to the percentage by weight of the raw materials of this embodiment, the preparation method of the autoclaved gypsum block comprises the following steps:

[0042] S1. Weigh each raw material according to the pe...

Embodiment 3

[0046] The autoclaved gypsum block of this embodiment includes the following raw materials in weight percentage: phosphogypsum 60%, carbide slag 18%, fly ash 10%, aggregate 5%, slag ash 2%, composite activator 5%, composite activator It is a mixture of silica fume and sulfate solution, wherein the mass ratio of silica fume and sulfate solution is 2:1.5.

[0047] Wherein the preparation method of the composite activator is: add the silica fume and the sulfate solution into a mixer at the same time, mix and stir evenly, and the stirring time is 6 minutes to obtain a mixed material, and then send the mixed material into a digestion bin for storage It can be digested for 1 hour, and the water content is controlled to 7%.

[0048]According to the percentage by weight of the raw materials of this embodiment, the preparation method of the autoclaved gypsum block comprises the following steps:

[0049] S1. Weigh each raw material according to the percentage by weight of the raw mater...

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Abstract

The invention provides an autoclave plaster brick and a preparation method thereof, and relates to the technical field of construction materials. The autoclave plaster brick is prepared from the following raw materials: phosphogypsum, carbide slag, pulverized fuel ash, aggregate, slag ash and a compound exciting agent. The autoclave plaster brick adopts the high-addition phosphogypsum as a raw material, and the new compound exciting agent is added, so that pretreatment does not need to be performed on the raw material phosphogypsum in advance, the phosphogypsum addition quantity can be improved, and the prepared autoclave plaster brick product is good in performance; the autoclave plaster brick has high sound insulation, heat insulation and heat preservation effects; the preparation method is capable of lowering the production cost, improving the utilization ratio of the phosphogypsum, and reducing land occupation and environmental pollution caused by accumulation of a large amount of phosphogypsum.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an autoclaved gypsum block and a preparation method thereof. Background technique [0002] Phosphogypsum is an industrial by-product of wet process production of phosphoric acid in the phosphating industry, and its main component is dihydrate gypsum (Ca 2 SO 4 2H 2 O), usually 85% to 95% of dihydrate gypsum in phosphogypsum. The comprehensive utilization of phosphogypsum to produce sulfuric acid co-production of cement technology lacks promotional value due to high energy consumption and poor economy. A large amount of phosphogypsum is stockpiled as solid waste, and the cumulative stockpiled phosphogypsum has exceeded 200 million tons, which not only takes up a lot of land, but also causes environmental pollution. Accelerating the resource utilization of phosphogypsum has become an urgent problem to be solved for the sustainable development of the phosphating indus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14B28B11/24B28B3/00
CPCB28B3/00B28B11/24C04B28/143C04B2201/50C04B18/0427C04B18/08C04B14/02C04B18/146C04B22/142
Inventor 方立贵孙梦雅吴根水韩凯锋凌辉勋赵勇薛松姚怀洲王军杨旭东
Owner 中盐安徽红四方新型建材科技有限公司
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