酒钢西沟矿数字化开采技术研究

Research on Digital Mining Technology in JISCO Xigou Mine

西沟矿露天开采境界内的石灰石资源依据CaO含量和SiO_2含量被划分为3种品级的熔剂石灰石、水泥灰岩BI和水泥灰岩BII。在西沟矿扩能改造完成前,因受产能制约及开采技术条件限制,资源利用率相对较低。近几年,西沟矿为了满足不同用户对石灰产品的需求,提高市场竞争力,高效利用和节约石灰石资源,开展了数字化开采技术应用、矿石贫化规律和合理采剥方法的研究,调查了用户对石灰石产品的需求及相关质量标准,建设和完善了生产工艺系统,制定了石灰石产品质量控制体系。在原有普通熔剂石灰石产品和水泥粉矿产品基础上,成功开发出不锈钢转炉用高品级石灰石块矿,同时实现了表外低品位矿石的回收利用,使矿石回采率大幅度提高,开采效益明显增强。

The limestone resources within open-pit mining boundary of Xigou Mine are divided into three grades includ- ing flux limestone,grade BI cement limestone and grade BII cement limestone,according to the contents of CaO and SiO2.Be- fore the completion of capacity expansion in Xigou mine,the utilization rate of resources was relatively low due to the capacity constraints and the mining technical conditions.In recent years,in order to meet the needs of different customers on limestone products,improve market competitiveness,and efficiently make use of and save the limestone resources,investigation on the application of the digital mining technology,the rule for the ore dilution and the reasonable caving-stripping method are car- ried out.Through surveying the customer's demand on limestone products and the relevant quality standards,the complete production process system was established and the quality control system of limestone products was formulated.Based on the original common flux limestone and the cement limestone powder,the high-grade limestone blocks for stainless steel convert- er have been successfully prepared,and meanwhile,low-grade ores can be recovered and utilized,which can greatly in- crease the recovery rate of the ore and significantly improve the mining benefit.