随着峨口铁矿露天开采进入后期,采出矿石贫化率增加,入磨品位降低,选矿生产成本逐年加大。通过研究粉矿干选工艺,将该工艺嵌入磨选老工艺中,研究形成了一系列关键技术,使粉矿干选工艺在老矿山应用取得了成功。 With the open pit mining Ekou iron ore into the late mining ore dredging rate increased, lower grinding grade, dressing production costs increased year by year. By studying the dry process of powder ore, the process is embedded into the old process of grinding and grinding, and a series of key technologies have been studied to make the successful application of the dry process of powder ore in old mines.