The invention relates to a nonstick
coating used on an
oxygen lance of a
steelmaking converter, which comprises
refractory powders and a wedding agent, wherein, the
refractory powders are 30 to 50 percent by weight percentage, and the wedding agent is 50 to 70 percent by weight percentage. The
refractory powders include the materials as follows by weight percentage: 40 to 70 percent of
graphite in soil form, 10 to 30 percent of high
alumina bauxite, 5 to 15 percent of refractory clays, 3 to 8 percent of swell soils and 3 to 8 percent of Tylose; the wedding agent is a water-based wedding agent, and includes the materials as follows by weight percentage: 15 to 30 percent of yellow
starch gums, 8 to 15 percent of
sodium hudroxide and 5 to 15 percent of
boric acid. The nonstick
coating solves the problems that the surface of the
oxygen lance of the
steelmaking converter is stuck with steel
slag severely, and the steel
slag is hard to scrape down. The
coating on the
oxygen lance prevents the steel
slag from directly contacting an oxygen lance body, the coating that has worse wettability with the steel slag leads the
adhesive property of the steel slag splashed onto the surface of the oxygen lance to become worse, and the oxygen lance does not bond with the steel slag no longer basically after the steel slag is scraped down through an oxygen lance slag scraper, thereby leading the work intensity of workers to be reduced greatly, and avoiding the hidden dangers when deslagging by using a knockout bar.