Abstract: Under the trend of large-scale stimulated reservoir volume （SRV） fracturing，the cost of hydraulic fracturing proppants has already accounted for more than 50% of the total cost of fracturing materials. The cost of proppants for a single well has risen sharply. Nickel-iron slag is an industrial solid waste，which has a bulk density of 1.78 g/cm³，and a crushing rate of 21.8% at 52 MPa closure pressure. With adhesive agent，curing agent，modifier and other additives added，nickel-iron slag can be made into a new fracturing proppant with a bulk density of 1.62 g/cm³ and a crushing rate of 6.7% at 52 MPa closure pressure by applying multi-stage technologies for shaping，such as micro-powder processing，continuous grading granulation，and composite granulation coating. The new proppant made from solid waste not only adds an additional choice to the types of fracturing proppants，but also contributes to the control of environmental problem caused by industrial waste and the increase of its comprehensive utilization rate by breaking through the restriction of traditional hydraulic fracturing proppants to the efficient development of oil and gas fields.

Key words: nickel-iron slag, solid waste proppant, micro-powder processing technology, composite granulation coating technology

摘要： 目前大规模体积压裂作业量逐年上升，压裂支撑剂占压裂材料整体成本已经突破50%，单井支撑剂费用大幅攀升。以工业固体废弃物镍铁渣作为主要原料，加入粘接剂、固化剂、改性剂等添加剂，运用微粉处理技术、连续级配造粒技术、复合型造粒包覆技术等多级技术整形，可将体积密度为1.78 g/cm³、52 MPa闭合压力下破碎率为21.8%的镍铁渣制备成体积密度为1.62 g/cm³、52 MPa闭合压力下破碎率为6.7%的新型压裂支撑剂。新型固废支撑剂不但丰富了压裂支撑剂类型选择，而且突破了传统压裂支撑剂对油气田高效开发的制约，为解决工业固体废弃物环保及综合利用率低的难题做出了贡献。

关键词: 镍铁渣, 固废支撑剂, 微粉处理技术, 复合型造粒包覆技术