A coke enhancing modifier and its preparation method and coke modification method
By spraying modified agents composed of boron anhydride and other modification agents on the surface of the coke, the problems of poor coke modification effect and high cost are solved, the coke reactivity and strength are reduced, and the cost of blast furnace iron smelting is reduced.
CN116751614BActive Publication Date: 2025-09-02CHENGDU XIANGWEI METALLURGICAL MATERIAL
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Patent Information
- Application Number
- CN202310701074.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-14
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2043-06-14
AI Technical Summary
Technical Problem
The existing coke passivating agent has poor modification effect, high modification cost, and large amount, making it difficult to reduce coke reactivity and improve post-reaction strength.
Method used
Coke reinforcement modifier is used, composed of boron anhydride, solid water glass, mineralizer, film forming agent and surface wetting agent. By spraying it on the surface of the coke, it forms a wrapping layer to improve the toughness and strength of the coke and delay the dissolution and loss reaction.
Benefits of technology
Significantly reduce the reactivity of coke, improve the post-reaction strength, reduce the modification cost, reduce the coke ratio, and improve the economic benefits of blast furnace iron smelting.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention provides a coke strengthening and modifier, its preparation method, and a coke modification method, belonging to the field of blast furnace ironmaking technology. The coke strengthening and modifier provided by the present invention comprises the following raw material components: 15-30 parts boric anhydride; 10-14 parts solid water glass; 3-5 parts mineralizer; 5-8 parts film-forming agent; and 2-8 parts surface wetting agent. The mineralizer is a mixture of yttrium nitrate and cerium chloride in a 1:1 weight ratio. The coke strengthening and modifier provided by the present invention can form a coating on the coke surface, improving the toughness and strength of the coke, and slowing the dissolution reaction of the coke, thereby reducing the cost of existing blast furnace ironmaking. The coke strengthening and modifier has a wide range of raw material sources, a simple preparation process, and low cost. It is simple to use, requires a small amount, and has excellent modification effects. It can significantly reduce the reactivity of the coke and significantly increase the post-reaction strength of the coke. The method of the present invention can reduce the coke ratio, increase pig iron production, and reduce carbon emissions.
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