辽宁鞍本地区某铁矿废石碎磨特性研究

为解决废石堆存造成的一系列环境及安全问题，明确铁矿废石制备砂石骨料工艺流程，以辽宁鞍本地区某铁矿废石为例，在对其性质进行分析的基础上，开展了基于Bond球磨功指数试验与JK落重试验的碎磨特性参数研究。Bond球磨功指数试验结果显示，该铁矿废石Bond球磨功指数Wib为12.05 kWh/t。JK落重试验结果显示，该铁矿废石抗冲击粉碎模型为t10=71.25(1-e-0.52ECS) ，其中冲击粉碎参数A×b的值为37.05；磨蚀系数ta的值为0.17；相对密度为3.06。试验结果表明，该铁矿废石抗冲击粉碎能力属于硬范畴，抗磨蚀粉碎能力属于极硬范畴。结合上述试验结果，最终确定了该铁矿废石的生产设备与利用工艺。

Study on Comminution Characteristics of Waste Rock in Iron Mine from Anben Region in Liaoning Province

In order to solve a series of environmental and safety problems caused by waste rock storage ,and clarify the process of producing sand and gravel aggregates from iron ore waste rock,a certain iron ore waste rock in Anben area of Liaoning Province was regarded as the test sample.Based on the analysis of its basic properties,a study on the parameters of comminution characteristics based on Bond ball mill work index test and JK drop weight test was carried out.The Bond ball milling work index test results show that the Bond ball milling work index Wib of the iron ore waste is 12.05 kWh/t.The results of JK drop weight test show that the impact crushing model of the iron ore waste is t10=71.25(1-e-0.52ECS),where impact crushing parameter A×b is 37.05.The abrasion comminution parameter ta is 0.17.The relative density is 3.06.The test results show that the impact crushing resistance of the iron ore waste rock belongs to the hard category,and the abrasion crushing resistance belongs to the extremely hard category.Combined with the above test results,the production equipment and utilization process of the iron ore waste rock were finally determined.