采用铁尾矿调制不同酸度系数的熔融高炉渣进行离心成纤实验. 结果表明，随着酸度系数的增加，纤维直径、渣球含量和含水率整体呈增长趋势；当酸度系数大于1.4时，纤维直径增长明显且超出国标范围；酸度系数为1.0~1.25时，渣球含量较少，纤维质量较好；酸度系数为1.15~1.3时，纤维含水率变化不大且保持在0.66%左右，抗拉强度和韧性较好. 以不同的酸度系数调制高炉渣粘度，在满足成纤条件的前提下，酸度系数应控制在1.0~1.4为宜.

Slag fiber was prepared with centrifugal spinning apparatus by adjusting the acidity coefficient of molten blast furnace slag with iron ore tailing. The results show that with the increase of acidity coefficient, the diameter, slag ball content and moisture content of slag fiber increase. When the acidity coefficient is 1.4, the fiber diameter increases significantly, being over standard range. When the acidity coefficient is between 1.0 and 1.25, and the content of slag ball is lower, the quality of fiber is better. When the acidity coefficient is between 1.15 and 1.3, the moisture content of fiber changes little and remains at about 0.66%, its tensile strength and toughness are better. In adjusting the viscosity of quenched slag for preparation of the fiber at appropriate acidity coefficient, the coefficient should be controlled between 1.0 and 1.4 on the premise of fiber forming conditions.