日本三井炼铝公司研制成功的高炉炼铝法,不仅在日本,就是在美、英、法等国也有专利。高炉法的炼铝过程如下:首先把原来的矿物(过去不仅使用优质矾土而且还使用低质矾土,在日本多使用粘土等)和焦炭同时投入炉 Japan’s Mitsui aluminum foundry blast furnace aluminum method developed successfully, not only in Japan, that is, the United States, Britain, France and other countries also have patents. The blast furnace process aluminum refining process is as follows: First, the original mineral (in the past not only the use of high quality bauxite, but also the use of low quality bauxite in Japan, more use of clay, etc.) and coke into the furnace