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Ferro-coke producing method and producing device

A manufacturing method, iron coke technology, applied to coke ovens, coke ovens with vertical carbonization chambers, direct heating and dry distillation, etc., can solve the problems of not being able to directly use molded coke, and achieve equipment simplification, energy consumption reduction, and recovery Raw material ratio reduction effect

Active Publication Date: 2012-05-23
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the case of iron coke, reduction of iron-containing substances is required, and the existing manufacturing method of formed coke cannot be directly used, and various operating elements such as the distribution of gas volume at each tuyere need to be considered

Method used

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  • Ferro-coke producing method and producing device
  • Ferro-coke producing method and producing device
  • Ferro-coke producing method and producing device

Examples

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Embodiment 1

[0076] use as Figure 7 In the shown ferrocoke manufacturing test apparatus, a ferrocoke manufacturing test was carried out with and without using the cooling gas extraction tuyeres 10 . Use a cross-sectional area of ​​1.67m 2 vertical retort furnace. It is considered here that in the prior art of Patent Document 1, the cross-sectional area of ​​the cooling gas introduction part is smaller than that of the high-temperature gas injection part. , the cooling gas selectively flows through the center of the furnace, and the mixing of high-temperature gas and cooling gas decreases. In the present invention, the cross-sectional area of ​​the cooling gas injection part and the high-temperature gas injection part are the same, and the gas mixing properties of both are improved. In addition, by sieving the molded product as the raw material of iron coke, charging the molded product into the carbonization furnace while removing powder and fragments of the molded product with a partic...

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Abstract

Ferro-coke is produced by charging a dry distillation furnace with a molded material consisting of carbon-containing material and iron-containing material, dry-distilling the molded material in a dry distillation zone, injecting a cooling gas through a cooling gas injection tuyere provided in a cooling zone, cooling the ferro-coke, ejecting the in-furnace gas through a vent in the top of the furnace, and ejecting the ferro-coke from the lower portion of the cooling zone. The dry distillation is conducted by elevating into the dry distillation zone the cooling gas heat-exchanged with the ferro-coke in the cooling zone, injecting a high-temperature gas through a high-temperature gas injection tuyere provided in the lower portion of the dry distillation zone, and injecting a low-temperature gas through a low-temperature gas injection tuyere provided in the intermediate portion of the dry distillation zone.

Description

technical field [0001] The present invention relates to a method and a device for producing ferrocoke that continuously conducts carbonization and iron-containing formations in a vertical carbonization furnace to produce metallic iron in coke. Background technique [0002] In blast furnace operation, metallurgical coke produced by dry distillation of coal in a coke oven is generally used. In recent years, from the viewpoint of improving the reactivity of coke, the technique of using iron coke for metallurgy produced by mixing iron ore with coal and carbonizing it in blast furnace operation has been known. Iron coke can use the catalytic effect of reduced iron ore to increase the CO of coke in iron coke 2 Reactivity, the ratio of reducing materials can be reduced by lowering the temperature in the holding zone. [0003] As a technology for producing iron coke by dry distillation of carbonaceous substances such as coal and iron-containing substances such as iron ore as raw m...

Claims

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Application Information

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IPC IPC(8): C10B53/08C10B3/00C10B57/06
CPCC10B57/06C10B49/06C10B53/08C10B47/20C10B3/00
Inventor 佐藤健山本哲也藤本英和庵屋敷孝思
Owner JFE STEEL CORP
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