method used in processing high al-si content ore
in 1858, le • sate lee proposed the sintering process used in producing aluminum oxide, a two-component sintering process by using bauxite and sodium carbonate. this method can only be used to process bauxite with low content of sio2. if we use this method in processing bauxite with high content of silica, it is no application for the large loss of al2o3 and na2o during the process.
from 1888 to 1892, k • j • bayer, austrian, raised two patents: seed crystal decomposition and dissolution; marked the advent of bayer process. processing bauxite with low content of silica by these methods has the advantages of simple process, low energy consumption, good product quality and so on, becoming the main methods of production of aluminum oxide. but the bayer cannot be used in processing bauxite with high content of silica.
in 1880 and 1902, muir and pasqua respectively made substantial improvements to sintering process proposed by le • sate lee, that is, in addition to adding na2co3 in raw meal, also adding an appropriate amount of lizenithne, sintering process (soda lime sintering process) is becoming the method able to handle bauxite with high content of silicon and aluminum-containing raw materials. bayer method and the sintering method of continuous improvement through over hundred years have become the basic methods of industrial production for aluminum oxide.
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processing high al-si content ore by sintered method
sintering process is usually used for processing bauxite with high content of silica. however, in certain conditions, it is also used to process quality bauxite with high content of silica. the former soviet union has long-term experience of using high-grade bauxite to produce alumina by sintering method. their use of high-quality bauxite as raw material for sintering system, because it can greatly reduce the material flow rate of sintering system, reducing the clinker equivalent ratio, lower sintering energy consumption, and will help simplify the production process.
shanghai zenith is professional in processing bauxite with high content of silica by sintering method, we can provide you not only reliable machine, but also a whole set of service, including pre-sale service, sale service and after-sale service. shanghai zenith warmly welcomes you to come to inspect our factory, and we would like to design the most suitable proposal as per your requests.