国内铁矿石供给不足问题日显突出 ,我国钢铁生产所需铁矿石的来源构成将逐步由自产为主变为以进口为主、自产为辅。目前国内铁矿石探明储量约 486亿 t,但可开采储量不足 1 80亿 t,平均铁品位不到 30 %。以1 997年产铁矿石原矿 2 .5 6亿 t、耗费铁矿储量约5亿 t计算 ,可供开采的 The problem of insufficient supply of iron ore in China becomes increasingly prominent. The source composition of iron ore needed for the production of iron and steel in our country will gradually shift from self-produced to imported and supplemented by own production. At present, the proven reserves of domestic iron ore is about 48.6 billion tons, but the recoverable reserves are less than 180 billion tons and the average iron grade is less than 30%. To 997 annual output of iron ore ore 2.56 billion t, iron ore reserves of about 500 million tons of computing, for mining