Abstract: This paper investigates a HP compound tailing cementing agent composed of high water material (HWM) and portable cement (PC). Cementation test was made on the tailings at different concentrations, types and particle sizes, and measurement was made on the uniaxial compressive strength of 3d, 7d, 28d and 56d of the cemented blocks with a cement-sand ratio of 12%. The optimal proportioning ratio and application method of this new type compound cementing agent are determined through the comprehensive analysis of the cemented block strength and the cost of the cementing material. The test results show that the tailing pulp concentration has no impact on the proportioning ratio of the cementing agent and the effect of the aggregate type on the agent is in fact that of the aggregate particle size.

Key words: Cementing agent, Tailing cementing, Compound cementing agent, New type binder