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Ferrocoke production process adopting hot pressing

A production process and iron coke technology, applied in coke ovens, petroleum industry, special forms of dry distillation, etc., can solve problems such as poor thermal performance, difficulty in achieving production results, and low iron ore ratio, reducing production costs and improving Efficiency of energy utilization and effect of reducing energy consumption

Inactive Publication Date: 2018-05-29
WUHAN COSRED SCI & TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 iron ore ratio is low (the highest iron ore ratio can be up to 10%), and the thermal performance is poor, it is difficult to achieve the ideal production effect

Method used

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  • Ferrocoke production process adopting hot pressing
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Embodiment 1

[0040] Such as figure 1 As shown, the present invention provides a hot-pressed iron coke production process for producing iron coke that replaces part of blast furnace coke. The main production steps include:

[0041] 1) Mix the iron ore powder (0.3mm) and coal powder (0.3mm) that have reached the qualified particle size after pulverization, and then heat them after mixing. The heating temperature reaches 550°C, and then briquetting. 20-50mm;

[0042] 2) The briquetting material is fed from the top of the carbonization chamber by the charging device, and the carbonization chamber is completely filled with the briquetting material, and the material surface is higher than the body of the carbonization furnace by a certain height;

[0043] 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 cha...

Embodiment 2

[0050] The technique for producing iron coke of the present invention comprises the following steps:

[0051] 1) Fully mix the pulverized iron ore powder (0.5mm) and lignite (0.5mm) with an iron grade of 53%, and the mass ratio of iron ore powder to lignite is 30:70. After mixing, heat to 550°C. Then carry out hot pressing, the particle size of hot pressing block is about 30mm;

[0052] 2) The briquette material obtained above is loaded into the carbonization chamber from the top of the carbonization shaft furnace by the furnace top device, and the briquette material completely fills the carbonization chamber and is higher than the top surface of the carbonization shaft furnace by a certain height;

[0053] 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;

[0054] 4) The coal gas supplied to the burner through the pipeline and the combustion-supp...

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Abstract

The invention relates to a ferrocoke production process adopting hot pressing. Ferrocoke produced with the production process can partially replace coke as a main raw material for a blast furnace. Theferrocoke production process comprises the following main steps: iron ore and non-coking coal are smashed, uniformly mixed, heated and hot pressed, a hot-press block is added to an external heating type carbonization chamber of a carbonization shaft furnace by a feed device, reduction of iron and carbonization of the non-coking coal are completed in the carbonization chamber, so that the ferrocoke is formed, and the ferrocoke is cooled, discharged out of the furnace and fed into a ferrocoke tank for the blast furnace. The process is advanced and reliable, large-scale production of the ferrocoke can be realized, the product quality is good, coke dose and production cost of blast furnace ironmaking are reduced, production efficiency of blast furnace ironmaking is increased, CO2 emission ofblast furnace ironmaking is reduced.

Description

technical field [0001] The invention relates to the technical field of metal pyrometallurgy, in particular to a hot-pressed iron coke production process, 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 furnace...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/06C10B53/04C21B5/00
CPCC10B53/04C10B57/06C21B5/007
Inventor 周强李建涛唐恩陈泉锋汪朋
Owner WUHAN COSRED SCI & TECH LTD
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