Method for producing carbon iron composite

By pre-pulverizing molding powder to a specific particle size and blending it with new raw materials, the method stabilizes molding pressure and enhances ferro-coke strength while reducing raw material consumption.

JP2026015197APending Publication Date: 2026-01-29JFE STEEL CORP
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Patent Information

Application Number
JP2025082479
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-07-18
Filing Date
2025-05-16
Publication Date
2026-01-29

AI Technical Summary

Technical Problem

Existing methods for producing ferro-coke face challenges in stabilizing molding pressure variations due to the reuse of molding powder, leading to inconsistent production of high-strength ferro-coke, and there is a demand for reducing the amount of new raw materials used by effectively reusing this powder.

Method used

A method involving pre-pulverizing molding powder to a predetermined particle size, blending it with new raw materials in a specific ratio, and using a double-roll molding machine to control molding pressure variations, ensuring the top particle size of the molding powder is 2/3 or less than that of the new raw material, with a blending amount of 20% or more.

Benefits of technology

This approach suppresses molding pressure variations, enhances the strength of the ferro-coke product, and reduces raw material usage, thereby lowering production costs.

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Abstract

To provide a method for producing ferrocoke, which can suppress variation in molding pressure during blending of molding powder by pulverizing the molding powder to a predetermined particle size in advance.SOLUTION: A method for producing carbon iron composite according to the present invention includes a molding step of molding a molding material with a double roll molding machine to produce a molded material, a separation step of separating the molded material into a molded material for carbonization and a molding powder, and a carbonization step of carbonizing the molded material for carbonization to produce carbon iron composite, wherein the molding material contains a new material and the molding powder, the new material contains coal, an iron source material, and a binder, and in the molding step, a top particle size of the molding powder satisfies a condition based on a top particle size of the new material.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

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