一、铝土矿的资源概况铝工业是第二次世界大战后,发展最快的工业部门。目前,世界铝的年产能力达1800万吨,铝土矿的年产量为7000—8000多万吨。铝土矿是生产氧化铝的主要原料,当前除苏联有5个以霞石和明矾石为原料的氧化铝厂外,世界上氧化铝产量的98%都是以铝士矿为原料的。据不完全统计,国外铝土矿储量在一亿吨以上的国家有28个,资源总量达360亿吨, First, the bauxite resource profile Aluminum industry is the fastest-growing industrial sector after the Second World War. At present, the annual output of aluminum in the world reaches 18 million tons and the annual output of bauxite is more than 7,000-8,000 tons. Bauxite is the main raw material for the production of alumina. At present, except for the five alumina plants in the Soviet Union that are made of nepheline and alunite, 98% of the world’s alumina production is based on aluminous ore. According to incomplete statistics, there are 28 foreign bauxite reserves in more than 100 million tons, with a total resource of 36 billion tons,