影响镍渣蒸压制品抗压强度的因素研究

Some factors affecting the compressive strength of nickel slag autoclaved product

试验利用镍渣、水泥熟料、熟石灰、电石渣等原料制备镍渣蒸压制品，探索了成型压力、增强剂加入量、加水量和蒸养制度等因素对镍渣蒸压制品抗压强度的影响规律。结果表明，本试验合适的成型压力为15～20MPa，增强剂的最佳加入量为0．5％，合理的加水量为8．57％-10．00％，最佳的蒸压养护温度为180℃或190℃，对应的蒸压养护时间为8h或9h。此外，使用电石渣代替熟石灰利用相同工艺条件制备蒸压制品的抗压强度无明显差异。

Prepared from autoclaved product of nickel slag, cement clinker, slaked lime,carbide slag, the experiment studied some factors that affecting the compressive strength of nickel slag autoclaved product,such as molding pressure,content of enhancer, content of water added,steam curing system and so on. The results show that the suitable molding pressure is 15-20 MPa; the optimum enhancer content is 0.5%;the reasonable amount of water added is 8.57%-10.00%;the best autoclaving temperature is 180 ℃ or 190 ℃;autoclaving time is eight or nine hours. In addition,under the same process conditions,autoclaved product was successfully prepared if using carbide slag instead of slaked lime, and the compressive strength of autoclaved product had no significant difference.