论文部分内容阅读
1.前言在钢铁工业中,原科、烧结、炼焦、高炉、炼钢、初轧、连铸、轧制等工序都要使用大量的水,其综合用量约为每吨粗钢100—200米~3海水和淡水。目前在一个年产粗钢500—800万吨的钢铁厂,每日约耗150—200万米~3水。钢铁企业所需巨大的水量不能全靠外界供给,历来都要靠利用循环水解决。新锐某钢铁厂用水的循环回收如表1所列,已达91—99％。在整个钢铁企业中工业水的回收率远远超过60％,可以认为水的循环再使用基本上已经成功。但自两次石油危机以
1. Foreword In the steel industry, a large amount of water is used in the processes of raw materials, sintering, coking, blast furnace, steelmaking, initial rolling, continuous casting and rolling. The comprehensive consumption is about 100-200 meters per ton of crude steel ~ 3 sea water and fresh water. Currently in an annual output of crude steel 500-800 tons of steel mills, about 150-200 million meters per day ~ 3 water. The huge amount of water needed by steel companies can not be supplied by the outside world and has always been to rely on the use of recycled water. New steel recycling water recycling plant listed in Table 1, has reached 91-99%. The recovery rate of industrial water in the entire steel industry far exceeds 60%. It can be considered that the recycle of water has basically succeeded. But since the oil crisis came twice