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四、废钢利用情况1.废钢资源废钢与铁矿石都可以做生产钢铁的原料,在预测铁矿石需求量时,首先要测算废钢利用量。废钢是一种可以再生与循环利用的资源,钢铁制品使用一定年限后报废,成为废钢,回收加工后再回炉炼钢。钢铁产品中可回收部分每20～30年一个轮回,并且自然损耗很低。?
Fourth, the use of scrap 1. Scrap scrap steel and iron ore can do the production of steel raw materials, iron ore demand in the forecast, we must first estimate the amount of scrap utilization. Scrap is a renewable and recyclable resource. Scrapped steel products are scrapped after being used for a certain period of time and become scrap steel, which is recycled to steelmaking after processing. The recyclables in steel products are recycled once every 20 to 30 years and have low natural losses. ?