中州铝厂一期工程于1992年10月试车投产后,没有急于按设计进行石灰石矿山建设,而是从企业实际和当地资源条件出发,采取“民采矿+联办矿+自加工矿”三元化供矿新模式,稳妥解决了氧化铝生产所需石灰石问题。截止1999年9月底累计完成供矿量163.8万吨,矿石二级以上品级率稳定到85％以上,与初步设计相比,节约项目投资 After the first phase of Zhongzhou Aluminum Plant was commissioned in October 1992, it was not in a rush to construct limestone mines according to the design. Instead, it proceeded from the actual and local resource conditions of the enterprises and adopted the strategy of “mining + coal mine + self-processing ore” The new model for the supply of minerals, safe solution to the alumina production of limestone required. As of the end of September, 1999, the total amount of ore supply was completed, reaching 1.368 million tons. The ore grade level above Grade II was stable above 85%. Compared with the preliminary design, the project investment was saved