风淬钢渣对高炉渣基微晶玻璃性能的影响

Effect of air quenched steel slag on properties of glass-ceramic based on blast furnace slag

以风淬钢渣和高炉渣为主要原料,采用一次烧结法制备微晶玻璃。结果表明,该方法制备的微晶玻璃主晶相为钙铝黄长石(Ca2Al2SiO7),还有少量的镁黄长石(Ca2MgSi2O7),钢渣最大用量达到50%;随着风淬钢渣含量的增加,样品的最佳烧结温度逐渐增加;烧结温度对样品析晶性能的影响明显大于风淬钢渣含量的影响;样品的抗折强度随风淬钢渣的增加呈现出先增大后减小的趋势;样品的密度随风淬钢渣的增加而逐渐减小;直接用风淬钢渣和高炉渣制备出的微晶玻璃具有良好的抗折强度和耐酸碱性,抗折强度最大可达90 MPa,该方法为综合治理冶金渣污染及其综合利用开辟了新的途径。

To investigate the effect of steel slag on glass-ceramics, air quenched steel slag and blast furnace slag were used to prepared glass-ceramics by a single sintering process. The major crystalline phase of the samples is gehlenite （Ca2Al2SiO7 ） , and it contains a small amount of akermanite （Ca2MgSi2O7 ）. The optimum sin- tering temperature increases with increasing steel slag, and the effect of sintering temperature on crystallization of samples is larger than that of air quenched steel slag. The bending strength of samples first increases, then de- creases with increasing amount of air quenched steel slag, and the density of samples decreases with increasing a- mount of air quenched steel slag. The samples present good mechanical properties and chemical resistance, and it provides a promising way for treating pollution and utilization of blast furnace slag and air Quenched steel slag.