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Method for preparing coke

A technology of coke and carbonization, which is applied in the formulation field of shaped coke in inclined bottom coke ovens. It can solve the problems of poor thermal stability and poor hot and cold strength of marking lines, and achieve the effects of low porosity, increased strength and reduced loss.

Active Publication Date: 2014-12-10
SHANDONG JUMING ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of the products produced by the original process is that the marking line is poor in cold and hot strength, especially the thermal stability in practical use.

Method used

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  • Method for preparing coke
  • Method for preparing coke
  • Method for preparing coke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] 1) Crushing of raw materials

[0078] Main coking coal, lean coal, anthracite, coke powder, pitch and petroleum coke are separately pulverized to produce main coke coal powder, lean coal powder, anthracite powder, fine coke powder, pitch powder and petroleum coke powder. The particle size of pulverized coal is 40 mesh, the particle size of lean coal is 40 mesh, the particle size of anthracite powder is 60 mesh, the particle size of fine coke powder is 100 mesh, the particle size of asphalt powder is 30 mesh, and the particle size of petroleum coke is 60 mesh. The final raw material powders are stored in the corresponding raw material bins respectively for standby.

[0079] 2) Weighing and mixing of raw materials

[0080] 2A) Weigh the raw materials according to the following weight ratio (×10kg)

[0081]

[0082] 2B) Put main coke coal powder, lean coal powder, anthracite coal powder, fine coke powder, asphalt powder and petroleum coke powder in a double-screw mixe...

Embodiment 2

[0105] 1) Crushing of raw materials

[0106] Separately pulverize main coking coal, lean coal, anthracite, pitch and petroleum coke to produce main coking coal powder, lean coal powder, anthracite powder, pitch powder and petroleum coke powder, wherein the particle size of main coking coal powder after crushing is 30 mesh , The particle size of lean coal powder is 50 mesh, the particle size of anthracite powder is 50 mesh, the particle size of asphalt powder is 20 mesh, and the particle size of petroleum coke powder is 150 mesh. The crushed raw material powder is stored in the corresponding raw material warehouse for standby.

[0107] 2) Weighing and mixing of raw materials

[0108] 2A) Weigh the raw materials according to the following weight ratio (×10kg)

[0109]

[0110] 2B) Put coking coal powder, lean coal, anthracite coal powder, asphalt powder and petroleum coke powder in a twin-screw mixer and mix them evenly to prepare mixed raw material powder, wherein the stirr...

Embodiment 3

[0125] 1) Crushing of raw materials

[0126] Main coking coal, lean coal, anthracite, coke powder, pitch and petroleum coke are separately pulverized to produce main coke coal powder, lean coal powder, anthracite powder, fine coke powder, pitch powder and petroleum coke powder. The particle size of pulverized coal is 50 mesh, the particle size of lean coal is 30 mesh, the particle size of anthracite powder is 70 mesh, the particle size of fine coke powder is 150 mesh, the particle size of asphalt powder is 40 mesh, and the particle size of petroleum coke is 80 mesh. The final raw material powders are stored in the corresponding raw material bins respectively for standby.

[0127] 2) Weighing and mixing of raw materials

[0128] 2A) Weigh the raw materials according to the following weight ratio (×10kg)

[0129]

[0130] 2B) Put main coke coal powder, lean coal powder, anthracite coal powder, fine coke powder, asphalt powder, and petroleum coke powder in a double-helix mix...

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Abstract

The invention provides a method for preparing coke and in particular provides a preparation method of formed coke in a sloping bottom type coke oven. The method comprises the step of carrying out dry distillation on the raw materials including coking coal, lean coal, anthracite, coke powder, asphalt and petroleum coke. The formed coke is prepared by stirring blending coal at high temperature and high pressure according to a certain proportion and carrying out forming, charging and carbonizing processes. The method has the beneficial effects that a formula effectively solves the problem of impacts of plastic mass change under the conditions of high temperature and rapid heating; the coke quality reaches the A-level rate, which is above 95%, in the national standard; the coke has the characteristics of uniform product specification, high lumpiness, high strength, lower porosity and reactivity and low ash content and sulfur content.

Description

technical field [0001] The invention relates to a formula for making molded coke, in particular to a formula for making molded coke in an inclined-bottom coke oven and a coking method for the inclined-bottom coke oven. Background technique [0002] In recent years, due to the continuous increase in global steel production, the demand for coke has further increased. With the development of large-scale iron and steel blast furnaces and high-pressure injection technology, the requirements for the quality and stability of coke in large-scale blast furnaces are getting higher and higher. Moreover, due to the increasing scarcity of coking coal resources, the price of incoming coal has remained high for a long time, coupled with the increasingly low price of coke, coking enterprises are required to reduce the cost of incoming coal and improve the quality of coke products. For this reason, the coking industry requires optimization of the furnace coal scheme, reducing the proportion...

Claims

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Application Information

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IPC IPC(8): C10B53/08C10B57/04
Inventor 柴玉军王青木田永杰
Owner SHANDONG JUMING ENERGY
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