Ardealite-based cement retarder and preparation method thereof

A coagulant and phosphogypsum technology, which is applied in the field of building material production, can solve the problems of phosphogypsum environmental pollution, etc., achieve significant economic and social benefits, reduce processing pressure, and stabilize performance

Active Publication Date: 2015-01-07
SHANDONG HONGYI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a phosphogypsum-based cement coagulation regulator. The coagulation regulator of the present invention uses industrial waste residue-phosphogypsum as a raw material, which not only solves the environmental pollution problem of phosphogypsum, but also prepares cement coagulation regulator with excellent performance. agent, realizing the transformation of waste into treasure

Method used

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  • Ardealite-based cement retarder and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] Mix 92kg of phosphogypsum with 2.6kg of quicklime, 1.3kg of calcined alunite, and 3.1kg of sodium metasilicate to obtain material 1; add 44g of ethylene glycol, 22g of calcium lignosulfonate, and 34g of tetramethylammonium iodide to 8kg Stir evenly in water to obtain material 2; spray material 2 evenly on material 1, age for 48 hours, and dry at 30°C to obtain a phosphogypsum-based cement coagulant.

Embodiment 2

[0027] Mix 94.5kg of phosphogypsum with 1.6kg of quicklime, 1.7kg of calcined alunite, and 1.7kg of sodium metasilicate to obtain material 1; add 200g of ethylene glycol, 200g of calcium lignosulfonate, and 100g of tetramethylammonium iodide Stir evenly in 30kg of water to obtain material 2; spray material 2 evenly on material 1, age for 36 hours, and dry at 50°C to obtain a phosphogypsum-based cement coagulant.

Embodiment 3

[0029] Mix 97kg of phosphogypsum with 1kg of quicklime, 1.4kg of calcined alunite, and 0.5kg of sodium metasilicate to obtain material 1; add 310g of ethylene glycol, 630g of calcium lignosulfonate, and 60g of tetramethylammonium iodide into 40kg of water Stir evenly to obtain material 2; spray material 2 evenly on material 1, age for 24 hours, and dry at 80°C to obtain a phosphogypsum-based cement coagulant.

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Abstract

The invention discloses an ardealite-based cement retarder and a preparation method thereof. The ardealite-based cement retarder is prepared from the following matters in percentage by mass: 92-97% of ardealite, 2.9-7% of a modifier and 0.1-1% of a dispersant. The preparation method of the ardealite-based cement retarder comprises the following steps: uniformly spraying the dispersant into uniformly mixed ardealite and modifier; and aging and drying to obtain the ardealite-based cement retarder. The retarder disclosed by the invention, by using industrial waste residues ardealite as a raw material, solves the environmental pollution problem of ardealite, and the cement retarder which is excellent in performance is prepared, thereby turning waste into wealth. The retarder disclosed by invention is simple in preparation method, low in cost and convenient to process and use, and has very important meaning for efficient utilization of ardealite.

Description

technical field [0001] The invention relates to the field of building material production, in particular to a phosphogypsum-based cement coagulant and a preparation method thereof. Background technique [0002] Phosphogypsum is the waste residue discharged during the wet process of phosphoric acid production in the phosphorus chemical industry. For every ton of phosphoric acid produced, 5 tons of phosphogypsum are discharged. The annual production of phosphogypsum in China is about 50 million tons, and the comprehensive utilization rate is only 20%. The annual discharge of phosphogypsum in my country is about 70 million tons, and the cumulative stockpiled phosphogypsum has exceeded 250 million tons, which not only encroached on a large amount of land, but also caused environmental pollution. The "Twelfth Five-Year Plan for the Development of Energy Conservation and Environmental Protection Industry" pointed out that it is necessary to strengthen the comprehensive utilizatio...

Claims

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Application Information

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IPC IPC(8): C04B24/18C04B22/14C04B24/12
Inventor 冯恩娟朱化雨赵洪义宋南京
Owner SHANDONG HONGYI TECH
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