SCSE--表征矿石半自磨可磨度的新指标

摘要

JK落重试验及SMC试验作为测定矿石粉碎特性的试验方法在半自磨机选型和工艺条件优化中得到越来越多的应用。由JK落重试验或SMC试验获得的物料特性参数A和b是一种建立在特定粉碎数学模型基础之上的模型参数，这两个参数本身没有明确的物理意义，尽管其乘积A×b可作为衡量矿石抵抗冲击粉碎能力的一个指标，但A×b取值大小的工艺意义只有通过模型计算结果才能体现出来。为弥补这方面的不足，JKTech公司和SMCT公司新近联合推出了一种表征矿石半自磨可磨度的新指标———SCSE值。在综述JK落重试验、SMC试验以及利用JKSimMet软件进行半自磨磨矿流程模拟的方法和原理的基础上，介绍了这个新指标的定义、意义及局限性。%JK drop test and SMC test as a test method for determination of ore crushing characteristics has more and more applications in model selection and process optimization.Material characteristic parameters of A and b obtained from JK drop test or SMC test is a kind of model parameters based on a specific grinding mathematical model.These two parameters itself has no definite physical meaning,although its product A×b can be used as a measure for ability to resist impact crushing of ore,the A×b value of the size of the process meaning can be reflected only by model calculation.To make up for the deficiency,JKTech Company and SMCT Company recently launched a new index of the ore on grindability by SAG:SCSE values.Based on the re-view on JK drop test,SMC test and using JKSimMet software to simulate SAG process method and principle,a brief introduction of definition,significance and the limitations on the new index was presented.