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Cold press braise ball and its application

A coke powder and cold-pressing technology, applied in the field of cold-pressed coke powder balls, can solve the problems of complex processing procedures, high energy consumption, failure to popularize and use, etc., and achieve the effects of huge economic benefits, simple processing technology, and low processing cost

Inactive Publication Date: 2005-10-19
张玉山 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can make full use of the coke powder, the processing procedure is complicated and the energy consumption is high, so the processing cost is too high, so far it has not been popularized and used in industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] 80% coke powder and 20% bentonite binder are mixed and stirred, pressed into pillow-shaped agglomerates with more reasonable shape and stronger strength with a high-pressure double-roller briquetting machine, and then dried naturally to obtain a finished product. Product particle size: 30-50mm, compressive strength: 110Kg; the content of fixed carbon in it is 2-3% lower than that of raw coke powder, and other components remain unchanged. Adding 15-20% of the total amount of coke into the blast furnace can make the coke 100% utilized.

Embodiment 2

[0012] Mix and stir 75% of coke powder and 25% of bentonite binder, use a high-pressure double-roller briquetting machine to form pillow-shaped agglomerates with more reasonable shape and stronger strength, and then dry naturally to obtain the finished product.

Embodiment 3

[0014] Mix and stir 85% of coke powder and 15% of bentonite binder, use a high-pressure double-roller briquetting machine to form pillow-shaped agglomerates with more reasonable shape and stronger strength, and then dry naturally to obtain the finished product.

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PUM

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Abstract

A cold pressed braize ball for blast furnace is prepared from braize powder (75-85 wt.%) and bentonite or paper pulp (15-25 wt.%) through mixing and die pressing.

Description

Technical field: [0001] The invention relates to coke technology, and specifically provides a cold-pressed coke powder ball made of cheap coke powder, which can partially replace coke blocks for blast furnace smelting process. Background technique: [0002] The blast furnace smelting process is the process of putting iron concentrate, coke and other auxiliary materials into the furnace, and replacing iron through a series of redox reactions. In the blast furnace smelting process, coke mainly plays the role of heat source, reducing agent and skeleton, and is irreplaceable. However, whether it is self-produced or purchased coke, coke powder will inevitably be produced, accounting for about 15-20% of the total. Due to the small particle size and poor strength of coke powder, except for a small amount that can be used to produce calcium carbide and other products, most of the It can only be used as an ordinary fuel, and the price is low, causing a huge waste of resources. For ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/00C21B5/00
Inventor 张玉山王春福
Owner 张玉山