基于集料破碎面模型的母岩分档破碎

针对母岩破碎前的处理工艺现状,根据母岩破碎后新鲜破碎面的变化规律,并考虑不同颗粒形状的差异性,通过建立数学模型,从理论上证明对母岩材料进行分档破碎的可行性,并根据算例得出不良母岩分档筛分破碎的筛孔控制范围。研究结果表明：实际生产中,可据此建立相应的破碎控制系统,得出各档集料破碎前后的要求粒径和筛孔,从而有效提高路用集料生产质量,同时达到资源利用最大化、能源利用最小化的目的。

Grading-broken of parent rock based on aggregate broken surface model

According to the treatment processing status of the parent rock before its broken in producing aggregates,the change rule of fresh broken surfaces after the parent rock broken,and the differences of the different particle shapes,a mathematical model method was adopted to prove the feasibility of grading-broken theoretically,the control scope of screen hole size for undesirable rocks in grading-broken was obtained by an example.The results show that the broken control system can be developed by the above model to get the needed particle size and screen hole size before and after the crushing in practice,so the production quality of the aggregates can be improved,and the purpose of resource utilization maximization and energy consumption minimum is achieved at the same time.4 tabs,2 figs,8 refs.