【摘要】 利用超细粉磨工艺,制备出比表面积≥700 m2/kg的超细钢渣粉、超细S95矿粉。设计超细钢渣粉与超细S95矿粉按质量比7∶3、6∶4、5∶5复合,制得超细复合粉,并对其活性指数、流动度比、需水量比、初凝时间比、安定性进行测试。结果表明:超细钢渣粉28d活性指数达到100%、流动度比达到130%;各复合比例的超细复合粉7d、28d活性指数分别超过100%、95%,需水量比均小于95%,流动度比均大于120%,初凝时间比、安定性合格,均能达到S95矿粉要求。更多还原

【Abstract】 Ultrafine steel slag powder and ultrafine S95 ore powder with specific surface area ≥ 700 m2/kg were prepared by ultrafine grinding process. The superfine steel slag powder and the superfine S95 mineral powder were designed to be compounded according to the mass ratio of 7∶3, 6∶4 and 5∶5, and the superfine composite powder was prepared. The activity index, fluidity ratio, water demand ratio, initial setting time ratio and stability were tested. The results show that the 28 d activity index and fluidity ratio of ultrafine steel slag powder are 100% and 130%, respectively, and the 7 d and 28 d activity indexes of each composite proportion are over 100% and95%, the water demand ratio is less than 95%, the fluidity ratio is more than 120%, the initial setting time ratio and stability are qualified, all of which can meet the requirements of S95 mineral powder.更多还原