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A kind of high temperature resistant concrete for bearing steelmaking furnace body and preparation method thereof

A technology of high temperature resistance, steelmaking furnace, applied in the field of concrete, can solve the problem of poor high temperature resistance performance of concrete, achieve the effect of simple and easy mixing scheme, improve stability and compactness, and improve efficiency

Active Publication Date: 2022-07-01
靖江市恒生混凝土制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the problem of poor high temperature resistance of concrete bearing the steelmaking furnace body, in the first aspect, the present application provides a high temperature resistant concrete for bearing the steelmaking furnace body, characterized in that the concrete used for carrying the steelmaking furnace The high-temperature-resistant concrete is made of the following raw materials by weight: 40-50 parts of heat-resistant coarse aggregate, 30-40 parts of fine aggregate, 8-10 parts of cement, 6-8 parts of water, 4-6 parts of ore Powder, 2 to 3 parts of fly ash and 0.1 to 0.5 parts of admixture; the heat-resistant coarse aggregate is porous basalt particles with a particle size of 8 to 12 mm

Method used

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  • A kind of high temperature resistant concrete for bearing steelmaking furnace body and preparation method thereof
  • A kind of high temperature resistant concrete for bearing steelmaking furnace body and preparation method thereof
  • A kind of high temperature resistant concrete for bearing steelmaking furnace body and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Take the porous basalt particles, crush and grind them through an 8mm screen, collect the screened particles, wash them with water, and then dry them naturally. According to the mass ratio of 10:1, stir and mix the screened particles with the silane coupling agent and collect the mixed particles. After drying to constant weight at 100°C, the dried modified particles were collected;

[0039] In parts by weight, 45 parts of silicic acid, 10 parts of polyaluminum chloride solution, and 3 parts of 0.5 mol / L acetic acid were weighed and placed in a stirred tank, stirred and mixed, and heated to a viscosity of 25 Pa in a water bath at 70°C. After s, the modified gel solution is obtained;

[0040]According to the mass ratio of 1:20, the modified gel liquid and the dry modified particles were stirred and mixed and placed in a stirring tank, then dried at 100 °C for 6 hours, and then heated to 800 °C at 2 °C / min, and calcined for 1 hour. , stand and cool to room temperature to ...

Embodiment 2

[0044] In Example 2, porous basalt particles were used to replace the heat-resistant coarse aggregate in Example 1, and other conditions and component ratios were the same as those in Example 1.

Embodiment 3

[0046] In Example 3, porous basalt particles modified by a silane coupling agent were used to replace the heat-resistant coarse aggregate in Example 1, and other conditions and component ratios were the same as those in Example 1.

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Abstract

The application relates to the field of coatings, and specifically discloses a high-temperature-resistant concrete for supporting a steelmaking furnace body and a preparation method thereof. The high-temperature-resistant concrete used to support the steel-making furnace body is made of raw materials containing the following parts by weight: 40-50 parts of heat-resistant coarse aggregate, 30-40 parts of fine aggregate, 8-10 parts of cement, 6-8 parts of water , 4-6 parts of mineral powder, 2-3 parts of fly ash and 0.1-0.5 parts of admixture; the heat-resistant coarse aggregate is porous basalt particles with a particle size of 8-12 mm; the preparation method is: first take cement, Fine aggregate and coarse aggregate are stirred and mixed, then mineral powder and fly ash are added to the mixer, and the mixing is continued. Finally, water and admixtures are added to the mixer, mixed and poured, dried and demoulded. Standard curing, The high-temperature-resistant concrete used for bearing the steel-making furnace body can be prepared; the concrete of the present application has excellent high-temperature resistance performance. In addition, the preparation method of the present application is simple and easy to operate, and effectively reduces the preparation cost.

Description

technical field [0001] The present application relates to the field of concrete, and more particularly, to a high-temperature-resistant concrete used for bearing a steel-making furnace body and a preparation method thereof. Background technique [0002] The basic task of converter steelmaking is molten iron pretreatment and smelting: molten iron is the basic raw material for converter steelmaking, which is supplied by ironworks. The molten iron for steelmaking requires a high temperature. High molten iron temperature is conducive to stable operation and automatic control of the converter. If the temperature is too low, it will affect the oxidation process of each component element in the molten iron and the heating rate of the molten pool, which is not conducive to slag formation. and remove impurities, resulting in splashing. [0003] Therefore, it is precisely because the converter steelmaking requires a higher temperature for smelting, resulting in a large temperature ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B14/14C04B14/06C04B16/06C04B14/46C04B111/28
CPCC04B28/04C04B14/14C04B14/06C04B16/0633C04B14/4656C04B2111/28C04B2201/50C04B18/12C04B18/08C04B24/24
Inventor 朱鹏程蔡连鑫
Owner 靖江市恒生混凝土制造有限公司