论文部分内容阅读
一序言 1973年的石油危机之前,每桶原油大约为二美元,现在为三十美元以上,估计再经过十年后为八十美元,由于最近原油价格明显地高涨,因此要认真地考虑节省能源的措施。根据资源统计年报的计算,由铝土矿冶炼一吨铝,需要16,146千瓦·小时的电力和525升的重油,煤油及轻油(合计量)。大部分电力依赖于输入原油的火力发电,实际要把一千瓦·小时换算成0.227升重油,冶炼一吨铝,则需要4.190升重油。此外,当用回收的废铝来生产再生原铝时,每吨需要95千
I. INTRODUCTION Prior to the oil crisis of 1973, crude oil was about two U.S. dollars a barrel, now more than thirty U.S. dollars and estimated to be another eighty dollars a decade later. Consideration should be given to energy conservation due to the recent sharp rise in crude oil prices The measure. According to the resource statistics annual report, smelting a tonne of aluminum from bauxite requires 16,146 kilowatt-hours of electricity and 525 liters of heavy oil, kerosene and light oil (total). Much of the electricity relies on thermal power from imported crude oil, actually converting 1 kilowatt-hour to 0.227 liters of heavy oil and smelting one tonne of aluminum, then 4.190 liters of heavy oil. In addition, when recovered aluminum is used to produce recycled primary aluminum, it needs 95 thousand tons per tonne