Abstract: The slag-adhering-resistant spraying mix was prepared with recycled material of used Mg-C bricks as main starting material，magnesite clinker as fine aggregate, fused magnesite, SiC, graphite, silicon micro powder and α-Al₂O₃ micro powder as powder lot, alumina cement as firming agent, sodium hexametahposphate as binder, lignin sulfonic acid calcium as water reducing agent, and polypropylene fiber as anti-explosion agent. The prepared spraying mix is low-cost, slag adhering resistance efficiently and easily to clean up. The industrial test and application of the prepared spraying mix showed that the slag-adhering-cleaned frequency reduced from 2~3 times to 1~2 times per shift, and the slag-adhering-cleaned time decreased from 15~30 min to 10~15 min each time. The application of the spraying mix increased the efficiency of slag-adhering-cleaned and decreased the time of non-production.

Key words: converter, slag adhering resistance, recycled refractory