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Shaft furnace process for producing iron coke

A technology for iron coke and shaft furnace, which is applied in the field of shaft furnace technology for producing iron coke, can solve the problems of poor thermal performance, difficult to achieve production effect, low iron ore ratio, etc., so as to reduce production cost, reduce temperature, reduce The effect of coke consumption

Inactive Publication Date: 2017-05-10
WUHAN COSRED SCI & TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that traditional coking equipment can be used to produce iron coke, the cold strength of iron coke meets the requirements of actual blast furnace production, the output is large, and the process is mature; the disadvantage is that the proportion of iron ore is low, and its thermal performance is poor To achieve the ideal production effect

Method used

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  • Shaft furnace process for producing iron coke
  • Shaft furnace process for producing iron coke

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Embodiment 1

[0039] like figure 1 As shown, the present invention provides a shaft furnace process for producing iron coke, which is used to produce iron coke that replaces part of the blast furnace coke, and its main production steps include:

[0040] 1) Mix the iron ore powder (0.3mm) and coal powder with a qualified particle size after pulverization, and then briquette after mixing. The particle size of the briquette is 20-50mm, and then dry;

[0041] 2) The dried briquette is fed from the top of the carbonization chamber by the charging device, and the carbonization chamber is completely filled with the briquette, and the material surface is higher than the carbonization furnace body by a certain height;

[0042]3) The briquetting material runs downward by gravity in the carbonization chamber, and the carbonization process is completed after passing through the preheating section and the carbonization section. The temperature in the carbonization chamber is 1100 ° C. The heat required...

Embodiment 2

[0053] The technique for producing iron coke of the present invention comprises the following steps:

[0054] 1) Fully mix the pulverized iron ore powder and lignite with an iron grade of 53% and binder, the mass ratio of iron ore powder and lignite is 30:70, and briquetting after mixing, the particle size after briquetting About 30mm, after being dried by the dryer, it is transported to the silo under the tank;

[0055] 2) Put the dried block material obtained above into the carbonization chamber from the top of the carbonization furnace by the furnace top device, and the compact material will completely fill the carbonization chamber and be higher than the top surface of the carbonization furnace by a certain height;

[0056] 3) The preheating section and carbonization section of the carbonization chamber are rectangular, with a width of 300-800mm, a length of 1000-1800mm, and a height of 10000-18000mm;

[0057] 4) The coal gas supplied to the burner through the pipeline an...

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Abstract

The invention relates to a shaft furnace process for producing iron coke. The iron coke produced by the shaft furnace process can partially replace an important raw material coke for blast furnace production. The shaft furnace process for producing the iron coke comprises the following main steps: crushing iron ore and non-coking coal, and carrying out uniform mixing, briquetting and drying on a crushed material and a binder; then adding a mixture into a carbonization chamber of a carbonization furnace by adopting a charging device; finishing reduction of iron and carbonization of the non-coking coal in the carbonization chamber by a preheating section and a carbonizing section, thereby forming the iron coke; cooling the iron coke, discharging and then charging into an iron coke groove. The shaft furnace process disclosed by the invention has remarkable advantages that a process is advanced and reliable, large-scale production of the iron coke can be realized, the quality of a product is good, the consumption of coke for blast furnace iron-making is reduced, the production cost of the blast furnace iron-making is reduced, the production efficiency of the blast furnace iron-making is improved, CO2 emission of the blast furnace iron-making is reduced, and the like.

Description

technical field [0001] The invention relates to the technical field of metal pyrometallurgy, in particular to a shaft furnace process for producing iron coke, which is mainly used to produce iron coke to replace part of the coke required for blast furnace production. Background technique [0002] Coke is an important raw material for blast furnace smelting. It plays the role of molten iron carburizing agent, heating agent, reducing agent and material column skeleton at the same time in the blast furnace. Blast furnace ironmaking must not only ensure the smooth operation of the blast furnace, but also reduce coke consumption as much as possible. Therefore, the requirements for the quality of coke in blast furnaces are high thermal strength and high reactivity. [0003] In order to ensure the quality of coke, special coking coal is used as the raw material for coke production. However, coking coal resources are very limited. In order to reduce the consumption of coke, blast fu...

Claims

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Application Information

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IPC IPC(8): C10B3/00C10B3/02C10B57/00C10B57/06
CPCC10B3/00C10B3/02C10B57/00C10B57/06
Inventor 李建涛
Owner WUHAN COSRED SCI & TECH LTD
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