A rolled, rigidized surface finish and high MOR give a tough, economic refractory grade product. 通过滚压刚化表面涂饰和高MOR,得到的坚固、经济的耐火级产品。
Greece has been producing refractory grade chromite ore for more than a hundred years. 希腊生产耐火级铬铁矿石已有百余年历史。
Present situation and prospects of bacterial leaching for refractory low grade gold ore 难处理低品位金矿细菌堆浸的现状和前景
With large-scale gold mining, free milling resources increasingly depleted, refractory, low grade gold deposit will become the main resources of gold industry. 随着金矿的大规模开采,易浸的金矿资源日渐枯竭,难处理、低品位金矿将成为今后黄金工业的主要资源。
Thiosulfate leaching of refractory copper-bearing and low grade oxide ore in Mexico 硫代硫酸盐法浸出墨西哥某低品位、难处理含铜金矿石的研究