Phosphogypsum-based steel mesh frame composite wallboard and preparation method thereof

A technology of steel wire grid and composite wallboard, which is applied in the field of building materials, can solve problems such as unstable product performance indicators, comprehensive utilization of phosphogypsum, and damage to the ecological environment. Good performance and waterproof performance

Pending Publication Date: 2019-01-11
兴义市黔城商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of comprehensive utilization, smelters in the non-ferrous metal industry at home and abroad mostly store phosphogypsum in the open air or solidify and backfill mines. Open-air storage not only occupies cultivated land and pollutes the environment, but also harmful substances in phosphogypsum will seep into the soil with the erosion of rainwater. , causing pollution of surface water and groundwater sources, destroying the ecological environment, and also causing waste of enterprise resources and increasing production costs; and only less than 40% of phosphogypsum is used as raw materials to produce other building materials to achieve comprehensive utilization, but some performance indicators of the products Unstable, poor durability
[0004] In the existing application technology, the comprehensive utilization of phosphogypsum has always been a problem, especially the water resistance and durability, which limit its application in the field of building materials

Method used

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  • Phosphogypsum-based steel mesh frame composite wallboard and preparation method thereof
  • Phosphogypsum-based steel mesh frame composite wallboard and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A phosphogypsum-based steel wire grid composite wallboard, comprising the following components by weight on a dry basis: 70 parts of phosphogypsum powder, 15 parts of mineral powder, 2 parts of active mineral powder, 5 parts of cement, 8 parts of quicklime, and a foaming agent 1 part, 0.5 part of admixture, 3 parts of steel wire grid, 0.5 part of glass fiber mesh cloth.

[0030] When preparing, first place the steel wire mesh frame in the mold for use, then weigh phosphogypsum powder, mineral powder, active mineral powder, cement, quicklime and foaming agent and pour them into a mixer to stir and mix to obtain the mixture A. Add water with a material-to-water ratio of 0.45-0.55 into the admixture to obtain an admixture solution, add the admixture solution to mixture A and stir for 1 min with a mixer at a speed of 200 rpm to form a mixed slurry; put the mixed slurry in the mold It is poured and formed at a temperature of 40-48°C, sent to a curing room at 45°C, and left t...

Embodiment 2

[0032] A phosphogypsum-based steel wire grid composite wallboard, comprising the following components by weight on a dry basis: 65 parts of phosphogypsum powder, 15 parts of mineral powder, 5 parts of active mineral powder, 7 parts of cement, 8 parts of quicklime, foaming 1 part of additive, 0.4 part of admixture, 3 parts of steel wire mesh frame, and 0.5 part of glass fiber mesh cloth.

[0033] When preparing, first place the steel wire mesh frame in the mold for use, then weigh phosphogypsum powder, mineral powder, active mineral powder, cement, quicklime and foaming agent and pour them into a mixer to stir and mix to obtain the mixture A. Add water with a material-to-water ratio of 0.45-0.55 into the admixture to obtain an admixture solution, add the admixture solution to mixture A and stir for 1 min with a mixer at a speed of 200 rpm to form a mixed slurry; put the mixed slurry in the mold It is poured and formed at a temperature of 40-48°C, sent to a curing room at 45°C, ...

Embodiment 3

[0035] A phosphogypsum-based steel wire grid composite wallboard, comprising the following components by weight on a dry basis: 60 parts of phosphogypsum powder, 20 parts of mineral powder, 5 parts of active mineral powder, 5 parts of cement, 10 parts of quicklime, foaming 1 part of additive, 0.3 part of admixture, 3 parts of steel wire mesh frame, and 0.5 part of glass fiber mesh cloth.

[0036]When preparing, first place the steel wire mesh frame in the mold for use, then weigh phosphogypsum powder, mineral powder, active mineral powder, cement, quicklime and foaming agent and pour them into a mixer to stir and mix to obtain the mixture A. Add water with a material-to-water ratio of 0.45-0.55 into the admixture to obtain an admixture solution, add the admixture solution to mixture A and stir for 1 min with a mixer at a speed of 200 rpm to form a mixed slurry; put the mixed slurry in the mold It is poured and formed at a temperature of 40-48°C, sent to a curing room at 45°C, ...

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Abstract

The invention discloses a phosphogypsum-based steel mesh frame composite wallboard, and relates to the technical field of building materials. The wallboard includes phosphogypsum powder, mineral powder, activated mineral powder, cement, quicklime, a foaming agent, an admixture, a steel mesh frame and fiberglass mesh. The preparation method comprises the following steps: firstly placing the steel mesh frame into a mold for standby, then weighing the phosphogypsum powder, the mineral powder, the activated mineral powder, the cement, the quicklime and the foaming agent and stirring and mixing uniformly, adding water into the admixture, adding the admixture into the above mixture and stirring to form a mixed slurry; pouring the mixed slurry into the mold for moulding, demolding the formed product and cutting, laying the fiberglass mesh, and spraying a cement paste protective layer onto the broadside so as to obtain the phosphogypsum-based steel mesh frame composite wallboard. The preparedphosphogypsum-based steel mesh frame composite wallboard has advantages of effective resources utilization, good stability, high compressive strength, durability and good water resistance.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a phosphogypsum-based steel wire grid composite wallboard and a preparation method thereof. Background technique [0002] Phosphogypsum is a solid waste discharged during the production of phosphate fertilizer and phosphoric acid. About 4.5-5t of phosphogypsum is produced for every 1t of phosphoric acid produced. Phosphogypsum is divided into dihydrate gypsum (CaSO4·2H2O) and hemihydrate gypsum (CaSO4·1 / 2H2O), most of which are dihydrate gypsum, which is acidic and contains a little harmful substances. [0003] In recent years, with the increase of phosphate fertilizer production, the discharge and storage of phosphogypsum have also increased. In terms of comprehensive utilization, smelters in the non-ferrous metal industry at home and abroad mostly store phosphogypsum in the open air or solidify and backfill mines. Open-air storage not only occupies cultivated land a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14
CPCC04B28/143C04B2111/27C04B2111/40C04B2201/32C04B2201/50C04B7/02C04B18/141C04B18/12C04B22/04C04B22/064C04B2103/302C04B14/42C04B14/48C04B38/02
Inventor 张鸿彭德川许颈舸彭延云邓力
Owner 兴义市黔城商品混凝土有限公司
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