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Method for preparing coke

A technology of coke and coke powder, which is applied in the field of coke making in vertical 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

[0058] 1) Raw material crushing

[0059] Main coking coal, anthracite, coke powder, pitch and petroleum coke are separately pulverized and sieved separately to produce main coking coal powder with a particle size of 40 mesh, anthracite coal powder with a particle size of 60 mesh, fine coke powder with a particle size of 100 mesh, and fine coke powder with a particle size of 30 mesh Asphalt powder and petroleum coke powder with a particle size of 60 mesh, and the pulverized raw material powders are stored in corresponding raw material bins for future use.

[0060] 2) Weighing and mixing of raw materials

[0061] 2A) Weigh the raw materials according to the following weight ratio (×10kg)

[0062]

[0063] 2B) Put main coke coal powder, anthracite coal powder, petroleum coke powder, fine coke powder, and asphalt powder in a double-screw mixer and mix them evenly to prepare mixed raw material powder, wherein the stirring rate is 80rpm.

[0064] 3) heat treatment

[0065] Put...

Embodiment 2

[0085] 1) Crushing of raw materials

[0086] Main coking coal, anthracite, coke powder, pitch and petroleum coke are separately crushed and sieved separately to make main coking coal powder with a particle size of 30 mesh, anthracite coal powder with a particle size of 50 mesh, fine coke powder with a particle size of 80 mesh, and fine coke powder with a particle size of 30 mesh Asphalt powder and petroleum coke powder with a particle size of 50 mesh, and the pulverized raw material powders are stored in corresponding raw material bins for future use.

[0087] 2) Weighing and mixing of raw materials

[0088] 2A) Weigh the raw materials according to the following weight ratio (×10kg)

[0089]

[0090]

[0091] 2B) Put main coke coal powder, anthracite coal powder, petroleum coke powder, fine coke powder, and asphalt powder in a double-screw mixer and mix them evenly to prepare mixed raw material powder, wherein the stirring rate is 100r / min.

[0092] 3) heat treatment

...

Embodiment 3

[0106] 1) Crushing of raw materials

[0107] Main coking coal, anthracite, coke powder, pitch and petroleum coke are separately crushed and sieved separately to produce main coking coal powder with a particle size of 50 mesh, anthracite coal powder with a particle size of 70 mesh, fine coke powder with a particle size of 150 mesh, and fine coke powder with a particle size of 40 mesh Asphalt powder and petroleum coke powder with a particle size of 70 mesh, and the pulverized raw material powders are stored in corresponding raw material bins for future use.

[0108] 2) Weighing and mixing of raw materials

[0109] 2A) Weigh the raw materials according to the following weight ratio (×10kg)

[0110]

[0111] 2B) Put main coke coal powder, anthracite coal powder, petroleum coke powder, fine coke powder, and asphalt powder in a double-screw mixer and mix them evenly to prepare mixed raw material powder, wherein the stirring rate is 50r / min.

[0112] 3) heat treatment

[0113] ...

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Abstract

The invention provides a method for preparing coke. The invention provides a preparation method of formed coke in a vertical coke oven. The method comprises the step of carrying out dry distillation on the raw materials including coking 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 a vertical coke oven and a coking method for the vertical 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 of coking coal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10B57/04
Inventor 柴玉军王青木田永杰
Owner SHANDONG JUMING ENERGY
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