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Method for producing molded product for ferro-coke

A manufacturing method and molding technology, which can be used in coke ovens, furnace types, special forms of dry distillation, etc., and can solve problems such as small effects.

Inactive Publication Date: 2018-02-23
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is simple, there is a problem that the effect of using both a high softening point adhesive and a low softening point adhesive is small

Method used

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  • Method for producing molded product for ferro-coke
  • Method for producing molded product for ferro-coke
  • Method for producing molded product for ferro-coke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] In this example, a high-speed stirring mixer with an effective volume of 375 L was used as the kneader. The molding machine was a twin-roll molding machine with a roll size of 715 mmφ×424 mm. The supply of the raw material to the roll is carried out by gravity loading, and the inflow of the raw material to the roll is adjusted by the vertical movement of the adjustment plate installed on the upper part between the two rolls, and the molding pressure is adjusted. The peripheral speed of the roller is set to 0.2m / s, and the linear pressure is set to 3-4t / cm. The size of the molded product is 30mm×25mm×18mm (6cc), and the shape is egg-shaped. The compounding ratios of coal, iron ore, high softening point binder, and low softening point binder were set to 65.8% by mass, 28.2% by mass, 2% by mass, and 3% by mass, respectively, with respect to the total raw material weight. The particle size of coal is 2.8 mm or less in total, and an indirect heating kiln is used for drying...

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Abstract

The invention discloses a method for producing a molded product for ferro-coke. The method enables advantageously producing a high-strength molded product for ferro-coke without requiring investment in specialized equipment and without involving troublesome operations. [Solution] This method is for producing a molded product for ferro-coke by molding a raw material mixture comprising coal, an ironsource material, a high softening point binder with a softening point of 150 DEG C or higher and a low softening point binder with a softening point of less than 150 DEG C, wherein the mixing and molding are carried out after the iron source material and / or the high softening point binder have been pre-heated to a temperature no less than 20 DEG C lower than the softening point of the high softening point binder.

Description

technical field [0001] The present invention relates to a method for producing a molded product for iron coke, which comprises molding coal and iron source raw materials using a binder to manufacture a molded product for iron coke. Background technique [0002] In recent years, the need to reduce carbon dioxide emissions has been advocated at home and abroad. Carbon dioxide emissions from the iron and steel industry are very large, and iron and steel account for about 12% of carbon dioxide emissions in Japan (Non-Patent Document 1). [0003] Carbon dioxide gas emissions from blast furnaces, which reduce iron ore to carbon to produce milled iron, are said to be particularly high in ironworks. Therefore, recently, efforts have been made to reduce carbon dioxide gas emissions from blast furnaces by operating at a low reducing agent ratio. That is, attention has been paid to the use of iron coke obtained by molding and carbonizing a mixture of coal and iron ore as a partial su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/08C10B57/06
CPCC10B53/08C10B57/06C21B5/007
Inventor 藤本英和庵屋敷孝思塩沢亨
Owner JFE STEEL CORP