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A kind of activator of converter thermally stewed steel slag powder and its preparation method and application

A technology of activator and steel slag powder, which is applied in the field of chemical additives, can solve the problems that the application effect is not obvious and cannot significantly improve the hydration activity of converter hot-simmered steel slag powder, and achieve significant social and economic benefits, accelerate steel slag hydration, and comprehensive The effect of excellent performance

Active Publication Date: 2020-05-05
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, currently there are few special activators for converter hot-steamed steel slag powder, and the usual cement grinding aids and concrete additives cannot significantly improve the hydration activity of converter hot-steamed steel slag powder, and the actual application effect is not obvious

Method used

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  • A kind of activator of converter thermally stewed steel slag powder and its preparation method and application
  • A kind of activator of converter thermally stewed steel slag powder and its preparation method and application
  • A kind of activator of converter thermally stewed steel slag powder and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] First, take 20 parts of alkali slag dry powder, 30 parts of low-alkalinity sulfoaluminate cement, 40 parts of blast furnace water-quenched slag fine powder, 10 parts of calcium formate and 0.5 part of polyvinyl ammonium phosphate to make powder, and then 0.5 part of monoethanol diisopropanolamine and 0.01 part of polydimethylsiloxane are evenly sprayed or dropped on the above powder, and mixed uniformly to prepare converter hot-steamed steel slag powder activator 1.

Embodiment 2

[0053]First, take 50 parts of alkali slag dry powder, 35 parts of low-alkalinity sulfoaluminate cement, 10 parts of blast furnace water-quenched slag micropowder, 5 parts of calcium formate and 0.8 part of polyvinyl ammonium phosphate to make powder, and then Spray or drop 2 parts of monoethanol diisopropanolamine and 0.02 parts of polydimethylsiloxane evenly on the above-mentioned powder, and finally mix them uniformly to prepare converter hot-steamed steel slag powder activator 2.

Embodiment 3

[0055] First, take 40 parts of alkali slag dry powder, 20 parts of low-alkalinity sulfoaluminate cement, 35 parts of blast furnace water-quenched slag micropowder, 5 parts of calcium formate and 0.5 part of polyvinyl ammonium phosphate to make powder, and then 1 part of monoethanol diisopropanolamine and 0.02 part of polydimethylsiloxane were evenly sprayed or dropped on the above powder, and finally mixed evenly to prepare converter hot-steamed steel slag powder activator 3.

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Abstract

The invention discloses an activating agent for a heat-stewing steel slag powder of a converter as well as a preparation method and application thereof, and belongs to the field of chemical additives in technical fields of resource utilization of industrial waste slag building materials. The activating agent is prepared from the following raw materials in parts by weight: 20 to 60 parts of alkaline residues, 15 to 40 parts of sulphoaluminate cement, 10 to 40 parts of water-quenched slag micropowder of blast furnace, 2 to 10 parts of calcium formate, 0.5 to 1 part of ammonium alcohol polyvinyl phosphate, 0.5 to 3 parts of diethanolisopropanolamine, and 0.01 to 0.05 part of defoaming agent. Compared with the alkaline excitation or common early strength agent or grinding additive, the activating agent has the advantages that the early and later activities of the heat-stewing steel slag of the converter are obviously improved, and the comprehensive effect breaks through the existing level; a large amount of chemical byproducts of alkaline slag is utilized, the activating effect is obvious, the cost is reduced, the green and environment-friendly effects are realized, and the purpose of treating wastes by wastes is certainly realized.

Description

technical field [0001] The invention relates to the field of chemical additives used in the technical field of resource utilization of industrial waste slag building materials, in particular to an activator for converter hot-simmered steel slag powder and its preparation method and application. Background technique [0002] Converter hot-steamed steel slag is the steel slag obtained from the converter steel slag discharged by iron and steel enterprises after thermal-steaming treatment. Due to the thermal-steaming treatment, the content of free calcium oxide and free magnesium oxide in the converter steel slag has been effectively controlled, thereby significantly improving the converter steel slag. Therefore, in recent years, there is a great potential to grind converter hot-steeled steel slag into steel slag powder as an auxiliary cementitious material in cement or concrete. However, compared with slag powder, the activity of steel slag powder is low, which seriously limits...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B5/06
CPCC04B5/06
Inventor 赵计辉阎培渝杨亮
Owner TSINGHUA UNIV
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