含碱高炉渣排碱、脱硫能力的实验研究

为探讨高炉渣排碱、脱硫能力间的关系,根据广钢实际高炉渣成分,通过实验研究了w(CaO)/w(SiO2),w(MgO),w(Al2O3)对炉渣排碱、脱硫的影响.结果表明:w(CaO)/w(SiO2)对炉渣的排碱、脱硫能力影响较大,二者相互矛盾;w(MgO)升高,炉渣排碱能力降低,含碱炉渣最佳脱硫对应的w(MgO)比普通炉渣低3%.w(Al2O3)升高,炉渣的排碱能力变化不大,而脱硫能力迅速降低.广钢高炉适宜的炉渣成分为:w(CaO)/w(SiO2)保持在1.0,w(MgO)保持在12%,w(Al2O3)保持在15%.

Experimental Investigation on Dealkalization and Desulphurization of Alkaliferous BF Slag

Investigates experimentally the relationship between dealkalization and desulphurization of alkaliferous BF slag.The influences of w(CaO)/w(SiO2),w(MgO) and w(Al2O3) on the two removabilities are studied according to the actual BF slag composition of GuangSteel.The results reveal that w(CaO)/w(SiO2) has great influence on both the two removabilities and they contradict each other.The dealkalizing rate falls with rising w(MgO),and the w(MgO) corresponding to best desulphurizing rate on alkaliferour slag is 3% lower than on normal slag.The change of dealkalizing rate is little but the desulphurizing rate decreases rapidly with rising w(Al2O3).For the sample slag appropriate composition is that the w(CaO)/w(SiO2) shall be kept 1.0,with w(MgO) 12% and w(Al2O3) 15%.