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Concrete containing coal-to-liquid (CTL) coarse slag and preparation method of concrete

A coal-to-oil and concrete technology, applied in the direction of cement production, etc., can solve the problems of complex processing process and high cost, and achieve the effects of reasonable compatibility, reduction of preparation cost, and reduction of cement consumption

Active Publication Date: 2020-06-05
SHEXIAN QINGZHANG CEMENT MFG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is still only suitable for the treatment of coal gasification fine slag with high residual carbon content, and does not involve the treatment method of coal-to-oil coarse slag with almost no residual carbon, and the treatment process is complicated and the cost is high

Method used

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  • Concrete containing coal-to-liquid (CTL) coarse slag and preparation method of concrete
  • Concrete containing coal-to-liquid (CTL) coarse slag and preparation method of concrete
  • Concrete containing coal-to-liquid (CTL) coarse slag and preparation method of concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1. Preparation of gelling material

[0050] (1.1) Preparation of steel slag grains and steel slag sand

[0051] Primary crushing and pre-removal of steel slag raw materials: The raw materials of converter steel slag are fed and pre-removed with a hanging iron remover. The steel slag after pre-removed iron enters the roller press for primary crushing, and then enters the vibrating screen for screening. After sieving, coarse particles I and fine particles I are produced. The particle size of the coarse particle I is 15mm, and the particle size of the fine particle I is 10mm; the coarse particle I returns to the roller press after being removed by the drum type iron remover to continue crushing, forming a closed loop; the fine particle I is separated by the powder separator, and prepared Steel slag sand and fine particle II are obtained, the particle size of the steel slag sand is 5 mm, and the particle size of the fine particle II is 2.8 mm; the fine particle II is the s...

Embodiment 2

[0070] 1. Preparation of gelling material

[0071] (1.1) Preparation of steel slag grains and steel slag sand

[0072] Primary crushing and pre-removal of steel slag raw materials: The raw material of electric furnace steel slag is fed, and pre-removed by hanging iron remover. The steel slag after pre-removed iron enters the roller press for primary crushing, and then enters the vibrating screen for screening. After sieving, coarse particles I and fine particles I are produced, the particle size of coarse particles I is 10mm, and the particle size of fine particles I is 5mm; coarse particles I return to the roller press after iron removal by the drum type iron remover to continue crushing, forming a closed loop ; After the fine particle I is selected by the powder separator, steel slag sand and fine particle II are formed. The particle size of the steel slag sand is 3mm, and the particle size of the fine particle II is 2mm; the fine particle II is the steel slag particle.

[...

Embodiment 3

[0091] 1. Preparation of gelling material

[0092] (1.1) Preparation of steel slag grains and steel slag sand

[0093] Primary crushing and pre-removal of steel slag raw materials: The raw material of electric furnace steel slag is fed, and pre-removed by hanging iron remover. The steel slag after pre-removed iron enters the roller press for primary crushing, and then enters the vibrating screen for screening. After sieving, coarse particles I and fine particles I are produced, the particle size of coarse particles I is 10mm, and the particle size of fine particles I is 5mm; coarse particles I return to the roller press after iron removal by the drum type iron remover to continue crushing, forming a closed loop ; After the fine particle I is selected by the powder separator, steel slag sand and fine particle II are formed. The particle size of the steel slag sand is 3mm, and the particle size of the fine particle II is 2mm; the fine particle II is the steel slag particle.

[...

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Abstract

The invention relates to concrete containing CTL coarse slag and a preparation method of the concrete. The concrete is prepared from the following raw materials in parts by weight: 15 to 20 parts of cementing material, 30 to 40 parts of fine aggregate, 40 to 50 parts of coarse aggregate, 3.75 to 9 parts of water and 0.015 to 0.4 part of water reducing agent, wherein the cementing material is prepared from the following components in parts by weight: 3 to 30 parts of CTL coarse slag, 20 to 60 parts of mineral slag, 10 to 40 parts of steel slag particles, 5 to 20 parts of gypsum and 2 to 15 parts of cement. The concrete provided by the invention is reasonable in raw material grading and has excellent mechanical properties; industrial solid wastes, such as CTL coarse slag, mineral slag, steelslag and gypsum, are effectively utilized, so that the method is low in cost, economical and environmentally friendly. The invention also provides a corresponding preparation method. The preparationmethod realizes no waste, no pollution and high efficiency in the whole process.

Description

technical field [0001] The invention relates to the field of resource utilization of industrial solid waste and the technical field of building materials, in particular to a concrete containing coal-to-oil coarse residue and a preparation method thereof. Background technique [0002] my country is rich in coal reserves, but oil reserves are relatively scarce, which is far from meeting the demand for oil in my country's industrial development. The coal-to-liquids industry is a technology that uses coal as raw material to produce petrochemical products. Coarse slag and fine slag will be produced during the coal-to-oil process, and the production volume in Yulin City alone is expected to reach 10.319 million tons in 2020. At present, most of the coal-to-oil coarse residues are disposed of by stockpiling or landfilling, which not only takes up a large area of ​​land, but also easily pollutes surface water, groundwater, and soil. Stockpiling is also prone to air pollution such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B11/30C04B7/24C04B7/147C04B7/02
CPCC04B28/14C04B28/143C04B28/144C04B28/142C04B11/30C04B7/24C04B7/147C04B7/02C04B2201/50C04B2111/00017C04B18/142C04B14/06C04B18/0427Y02P40/10
Inventor 巴浩静赵智利杨兑亨倪文杨志江杨海
Owner SHEXIAN QINGZHANG CEMENT MFG CO LTD
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