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Alkali slag water-retaining agent and preparation method and application thereof

A technology of water-retaining agent and alkali slag, which is applied in the field of alkali-slag water-retaining agent and its preparation, to achieve the effects of convenient use, alleviating environmental pollution problems, and low production energy consumption

Active Publication Date: 2016-11-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is: use the chlor-alkali slag to prepare a new type of powder water-retaining agent, which is applied in the field of building materials, which not only solves the performance problems of mortar and concrete, but also uses a large amount of alkali slag to effectively alleviate the damage caused by the alkali slag. Pollution problem, realize turning waste into wealth

Method used

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  • Alkali slag water-retaining agent and preparation method and application thereof
  • Alkali slag water-retaining agent and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] 1) Mix the alkali residue and water uniformly to obtain a mixture of alkali residue and water. The mixture of alkali residue and water is dehydrated. After dehydration, the moisture content is 96%, and the chloride ion content is 1.3wt% of the total solid mass in the mixture. Of chlor-alkali residue;

[0029] 2) Drying the chlor-alkali slag with the chloride ion content of 1.3 wt% of the total solid mass in the mixture to obtain the chlor-alkali slag;

[0030] 3) After mixing the prepared chlor-alkali slag and granulated blast furnace slag powder at a ratio of 80wt%:20wt%, they are added to a ball mill and pulverized to a 0.30mm sieve residue of 9wt% mixed powder to obtain alkali Slag water retention agent.

Embodiment 2

[0032] 1) After mixing the alkali residue and water uniformly, a mixture of alkali residue and water is obtained. The mixture of alkali residue and water is dehydrated. After dehydration, the water content is 94%, and the chloride ion content is 0.9wt% of the total solid mass in the mixture. Of chlor-alkali residue;

[0033] 2) Drying the chlor-alkali slag with the chloride ion content of 0.9 wt% of the total solid mass in the mixture to obtain the chlor-alkali slag;

[0034] 3) After mixing the prepared chlorinated alkali slag and limestone powder at a ratio of 60wt%:40wt%, they are added to a ball mill and pulverized to a mixed powder with a 0.30mm sieve residue of 7wt% to obtain an alkali slag water retaining agent .

Embodiment 3

[0036] 1) After mixing the alkali residue and water uniformly, a mixture of alkali residue and water is obtained. The mixture of alkali residue and water is dehydrated. After dehydration, the moisture content is 95%, and the chloride ion content is 0.5wt% of the total solid mass in the mixture. Of chlor-alkali residue;

[0037] 2) Drying the chlor-alkali slag with the chloride ion content of 0.5 wt% of the total solid mass in the mixture to obtain the chlor-alkali slag;

[0038] 3) The prepared chlor-alkali slag and fly ash are mixed uniformly in the ratio of 70wt%: 30wt%, then added to the ball mill, pulverized to a 0.30mm sieve residue of 6wt% mixed powder, to obtain the alkali slag water retention Agent.

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Abstract

The invention discloses an alkali slag water-retaining agent and a preparation method and application thereof. The alkali slag water-retaining agent is composed of dechlorination alkali slag and a mixed material. The method for preparing the alkali slag water-retaining agent comprises the steps of evenly mixing the dechlorination alkali slag and the mixed material by mass percentage, adding the dechlorination alkali slag and the mixed material into a grinding device, performing grinding treatment to mixed powder with 0.30 mm residue on sieve smaller than 10 wt%, and obtaining the alkali slag water-retaining agent. The alkali slag water-retaining agent is good in water-retaining property, can be used for improving water-retaining property of mortar and contractibility of concrete, and is economical and environmentally friendly.

Description

Technical field [0001] The invention belongs to the field of building materials, and in particular relates to an alkali slag water retaining agent used for improving and enhancing the performance of mortar and concrete and a preparation method thereof. Background technique [0002] Soda ash is the waste slag produced from the production of soda ash by the ammonia-soda method. my country is currently the world's largest soda ash producer. The annual output of soda ash is as high as 3 million tons. Such a large amount of soda ash has long caused many environmental pollution problems. . However, the content of chloride ions in alkali slag is very high. In the dry state, the mass fraction of chloride ions can reach 10%, which brings great difficulties to the comprehensive treatment of alkali slag. At present, the utilization rate of alkali slag in my country is only 3 to 4 %, mainly due to storage or reclamation treatment, which also caused great environmental problems. [0003] Throug...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/14C04B18/08C04B18/04C04B103/46C04B111/34
CPCC04B18/0481C04B40/0039C04B2103/465C04B2111/346C04B18/141C04B14/28C04B18/08Y02W30/91
Inventor 杨医博覃文杰傅国强郭文瑛普永强庞珺然梁竣杰王恒昌蔡泽鑫
Owner SOUTH CHINA UNIV OF TECH
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