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A kind of cementitious material containing coal-to-oil coarse residue and preparation method thereof

A cementitious material and coal-to-oil technology, which is applied in cement production and other directions, can solve the problems of complex processing process and high cost, and achieve the effect of simple process, easy operation and reduced cycle load

Active Publication Date: 2022-03-04
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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  • A kind of cementitious material containing coal-to-oil coarse residue and preparation method thereof
  • A kind of cementitious material containing coal-to-oil coarse residue and preparation method thereof
  • A kind of cementitious material containing coal-to-oil coarse residue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Preparation of steel slag particles

[0054] The raw material of converter 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 screening, coarse particles I and fine particles are produced. Particle I, the particle size of coarse particle I is greater than 10mm, and the particle size of fine particle I is less than 5mm; coarse particle I returns to the roller press to continue crushing after being removed by the drum type iron remover, forming a closed loop; fine particle I passes through the powder separator Finally, steel slag sand and fine particle II are formed, the particle size of steel slag sand is 3mm, and the particle size of fine particle II is 2mm. The fine particles II are the prepared steel slag particles.

[0055] (2) Pretreatment of slag, gypsum, coal oil coarse residue

[0056] Water-quenched blast fu...

Embodiment 2

[0062] (1) Preparation of steel slag particles

[0063] The raw material of converter 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 screening, coarse particles I and fine particles are produced. Particle I, the particle size of coarse particle I is greater than 10mm, and the particle size of fine particle I is less than 5mm; coarse particle I returns to the roller press to continue crushing after being removed by the drum type iron remover, forming a closed loop; fine particle I passes through the powder separator Finally, steel slag sand and fine particle II are formed, the particle size of steel slag sand is 3mm, and the particle size of fine particle II is 2mm. The fine particles II are the prepared steel slag particles.

[0064] (2) Pretreatment of slag, gypsum, coal oil coarse residue

[0065] Water-quenched blast fu...

Embodiment 3

[0071] (1) Preparation of steel slag particles

[0072] The raw material of converter 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 screening, coarse particles I and fine particles are produced. Particle I, the particle size of coarse particle I is greater than 10mm, and the particle size of fine particle I is less than 5mm; coarse particle I returns to the roller press to continue crushing after being removed by the drum type iron remover, forming a closed loop; fine particle I passes through the powder separator Finally, steel slag sand and fine particle II are formed, the particle size of steel slag sand is 3mm, and the particle size of fine particle II is 2mm. The fine particles II are the prepared steel slag particles.

[0073] (2) Pretreatment of slag, gypsum, coal oil coarse residue

[0074] Water-quenched blast fu...

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Abstract

The invention relates to a cementitious material containing coal-to-oil coarse slag and a preparation method thereof. The cementitious material comprises the following raw materials in parts by weight: 3-30 parts of coal-to-oil coarse slag, 20-60 parts of slag, steel slag 10-40 parts of granules, 5-20 parts of gypsum. The cementitious material effectively utilizes coarse slag from coal to oil, and solid waste such as steel slag, slag, gypsum, etc.; the material is well graded, and has good stability and excellent mechanical properties. The invention provides a corresponding preparation method, which has the advantages of simple process, easy operation, low energy consumption, no waste, no pollution, high efficiency and environmental protection.

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 gelling material containing coal-to-oil coarse residue and a preparation method thereof. Background technique [0002] Coal oil slag is a kind of coal gasification slag, which usually includes coarse slag and fine slag. The output of coal gasification slag in Yulin City alone is expected to reach 10.319 million tons in 2020. Coarse slag is generally produced in the gasifier. Under high temperature and high pressure conditions, the coal particles are slurried and then melted, chilled, and condensed. They are discharged from the slag hopper at the bottom of the gasifier, and contain a certain amount of water and residual carbon. . At present, most of the coal-to-oil coarse residues are disposed of by stockpiling or landfilling. Because they contain a variety of metals, they can easily pollute surface wate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/24C04B7/38C04B7/52
CPCC04B7/24C04B7/38C04B7/52Y02P40/10
Inventor 巴浩静杨兑亨赵智利倪文杨海杨志江
Owner SHEXIAN QINGZHANG CEMENT MFG CO LTD
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