Special slag adhering prevention spray coating for converter oxygen lance and preparation process of special slag adhering prevention spray coating

Abstract

The invention is applicable to the technical field of preparation of novel metallurgical materials, and provides a preparation process of a special slag adhering prevention spray for a converter oxygen lance, which comprises the following steps: S1) preparing materials: 10-35 parts of soil sampling graphite, 30-45 parts of magnesia powder, 3-25 parts of boron nitride, 3-12 parts of sodium silicate, 1-20 parts of acetone, 5-13 parts of borax, 1-5 parts of deflocculating agent, 1-3 parts of defoaming agent and 1-3 parts of plasticizer for later use; s2) homogenizing: putting the raw materials in the step S1 into a stirrer for stirring; s3) weighing: weighing and grouping the stirred mixture; s4) bagging: bagging the grouped mixture, naturally air-drying and reasonably maintaining, and curing and forming, S5) checking: checking the quality of the bagged and formed mixture, and S6) warehousing: warehousing and storing the qualified mixture, the performance is excellent, and the problems of slag sticking, gun sticking, difficult cleaning and influence on the production rhythm can be avoided.

Description

technical field [0001] The invention relates to the technical field of preparation of new metallurgical materials, in particular to a special anti-slag spray coating for a converter oxygen lance and a preparation process thereof. Background technique [0002] Recently, the most widely used steelmaking method in my country is top-blown oxygen converter steelmaking. When the oxygen lance is inserted into the converter to blow oxygen, it is easy to slag and stick to steel. When the oxygen lance slagging and sticking to steel is serious, it will not only increase the mechanical load of the oxygen lance lifting equipment, but also may cause the oxygen lance to fail to insert or pull out the nitrogen seal, affecting normal production and leaving a safety hazard. [0003] Aiming at the problem of oxygen lance slagging and steel sticking, some steel mills use slag scraper to scrape slag. If the bonding strength between the slag and the oxygen lance is high, it is very difficult fo...

AI Technical Summary

Problems solved by technology

If the bonding strength between the slag and the oxygen lance is high, it is very difficult for the slag scraper to scrape the slag, and it often needs to be repeated several times; The service life of the gun is reduced, and even a vicious equipment accident that causes the steel rope of the oxygen gun to break, endangering equipment and personal safety

[0004] During the converter smelting process, the oxygen lance is strongly washed by steel slag, and the slag is extremely oxidizing, and sometimes metallic splashes occur, which will cause the oxygen lance to stick to slag and steel, and the working environment is very harsh

Images