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Phosphogypsum-based simulative heat-preservation building material and preparation method of same

A technology of building materials and phosphogypsum, which is applied in the manufacture of tools, ceramic molding machines, etc., can solve problems such as not being seen, and achieve the effects of avoiding water pollution, improving toughness, and high flexural strength

Inactive Publication Date: 2015-11-11
GUIZHOU KAILIN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, no technical solutions for imitating thermal insulation materials have been seen in the process of using phosphogypsum to prepare building materials. Therefore, through a large number of researches and experiments, the inventors have used phosphogypsum as the main raw material to produce a thermal insulation material after processing. performance building materials

Method used

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  • Phosphogypsum-based simulative heat-preservation building material and preparation method of same
  • Phosphogypsum-based simulative heat-preservation building material and preparation method of same
  • Phosphogypsum-based simulative heat-preservation building material and preparation method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Formula: phosphogypsum 35kg, electrolytic yellow phosphorus slag 20kg, quicklime 1.75kg, silica sand 10kg, glass fiber 7kg, pulp 6kg.

[0037] Preparation:

[0038] (1) Ingredients: Take phosphogypsum and quicklime according to the mass ratio of 20:1 and neutralize them for 1 minute, put them into a mixer, add silica sand, glass fiber, and pulp and stir for 30 seconds, then turn on the mixer, add electrolytic yellow phosphorus slag to continue Stir for 60s to obtain the mixed material, then dry the mixed material until the free water ≤ 1%, put it into a ball mill and grind for 40 minutes;

[0039] (2) Aging: aging the mixed material after ball milling in step (1) after calcining at a temperature of 140° C. for 3 hours, and the aging time is 24 hours;

[0040] (3) Forming: put the aged material into the vibration forming machine, and vibrate and form according to the required shape;

[0041] (4) Autoclave curing: after the vibratory forming material is naturally cured ...

Embodiment 2

[0046] Formula: phosphogypsum 85kg, electrolytic yellow phosphorus slag 65kg, quicklime 4.25kg, silica sand 10kg, glass fiber 7kg, pulp 6kg.

[0047] Preparation:

[0048] (1) Ingredients: Take phosphogypsum and quicklime according to the mass ratio of 20:1 and neutralize them for 1 minute, put them into a mixer, add silica sand, glass fiber, and pulp and stir for 30 seconds, then turn on the mixer, add electrolytic yellow phosphorus slag to continue Stir for 60s to obtain the mixed material, then dry the mixed material until the free water ≤ 1%, put it into a ball mill and grind for 42 minutes;

[0049] (2) Aging: aging the mixed material after ball milling in step (1) after calcining at a temperature of 145° C. for 3 hours, and the aging time is 24 hours;

[0050] (3) Forming: put the aged material into the vibration forming machine, and vibrate and form according to the required shape;

[0051](4) Autoclave curing: After the vibration-formed material is naturally cured fo...

Embodiment 3

[0056] Formula: 55kg of phosphogypsum, 30kg of electrolytic yellow phosphorus slag, 2.75kg of quicklime, 10kg of silica sand, 7kg of glass fiber, and 6kg of pulp.

[0057] Preparation:

[0058] (1) Ingredients: Take phosphogypsum and quicklime according to the mass ratio of 20:1 and neutralize them for 1 minute, put them into a mixer, add silica sand, glass fiber, and pulp and stir for 30 seconds, then turn on the mixer, add electrolytic yellow phosphorus slag to continue Stir for 60s to obtain the mixed material, then dry the mixed material until the free water ≤ 1%, put it into a ball mill and grind for 46 minutes;

[0059] (2) Aging: aging the mixed material after ball milling in step (1) after calcining at a temperature of 152° C. for 4 hours, and the aging time is 34 hours;

[0060] (3) Forming: put the aged material into the vibration forming machine, and vibrate and form according to the required shape;

[0061] (4) Autoclave curing: After the vibratory forming materi...

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Abstract

The invention discloses a phosphogypsum-based simulative heat-preservation building material and a preparation method of same. The material includes the following raw materials, by weight, 35-85 parts of phosphogypsum, 20-65 parts of electrolytic yellow phosphorus slag and 1.75-4.25 parts of quick lime. The preparation method includes the following steps: material preparing, aging, moulding, autoclaved curing, preparation of a phosphogypsum base material, and drying to obtain the finish product. The phosphogypsum-based simulative heat-preservation building material is simple in construction technology, is light in weight, is good in waterproof and fireproof performance, is high in compressive strength and flexural strength, is strong in weather resistance and has excellent decorative effects as an indoor decorative building material. The method has quite important significance in protection of environment and achievement of sustainable development since large quantity of the phosphogypsum is consumed.

Description

technical field [0001] The invention relates to the field of chemical building materials, in particular to a phosphogypsum-based imitation thermal insulation building material and a preparation method thereof. Background technique [0002] Phosphogypsum is the main industrial by-product when phosphate and compound fertilizer enterprises use phosphate rock and sulfuric acid as raw materials to produce phosphoric acid. The wet-process phosphoric acid production process is to produce extraction slurry by decomposing phosphate rock powder with sulfuric acid, and then filtering to obtain phosphoric acid, which is filtered and washed. Phosphogypsum waste is generated in the process. [0003] With the development of ammonium phosphate industry and high-concentration phosphate compound fertilizer, the discharge of phosphogypsum is increasing year by year. At present, the annual increase of phosphogypsum discharge in the world is 280 million tons, and China is about 50 million tons, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B16/02B28B11/24
Inventor 杨步雷杨永彬向前勇王伟刘小成胡新菊李泽钢李显权
Owner GUIZHOU KAILIN GRP CO LTD
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