RESEARH, TECHNICAL AND ECONOMICAL ANALYSIS OF THE THERMAL MEYHODS OF PRODUCTION ALUMINA (AL_2O_3), TECHNICAL ALUMINIUM AND ITS ALLOYS AT THE HIGH-TEMPERATURE SHAFT FURNACE

摘要

One of the most power consumption Industrial process is production of Al from bauxites (about 45000KWt. hour electrical energy for production of 1 ton. of technical Al). This process is based at the low efficiency and productivity electrolysis technology. Last years IVTAN investigations give to us information about possibility to use of high temperature shaft- furnaces for efficiency production of alumina (Al_2O_3), technical aluminium and some alloys on the base of the high temperature carbon- thermal reduction process. At this case power consumption for production of unit of last, product will be less at the 3-4 times. The carbon-thermal method is allow produce alumina (Al_2O_3), technical Al and its alloys not only from deficient bauxites, but practically inexhaustible reserve of other tipes of Al-contain row materials (cianite, sillimonite and so on/ The thermal-chemical and technical-economical analises of technology are fulfilled at the IVTAN, especially for production of alumina. Base ones arguments on facts of production at the high temperature shaft-furnace technical Al and its alloys.