The influence of bauxite grade decline on brown fused alumin

Writer： admin Time：2021-06-29 Browse：℃

Brown fused alumina is made by melting bauxite and coke (anthracite) at high temperature in an electric arc furnace. Brown fused alumina abrasive is suitable for grinding metals with high tensile strength. Brown fused alumina has the advantages of high purity, good crystallinity, strong fluidity, small linear expansion, corrosion resistance, etc. The product has the advantages of no introduction, no breakage, etc. during use. The characteristic of non-cracking, its cost-effectiveness is much higher than that of traditional brown fused alumina, and it is the best aggregate and filler for brown fused alumina refractories.
 
The influence of bauxite grade decline on my country's brown fused alumina smelting technology
 
Brown fused alumina is an industrial raw material. Brown fused alumina has become a ceramic material in ceramics, metallurgy and other fields due to its high hardness, high temperature oxidation resistance, good chemical stability, and good grinding performance. It is widely used as refractory raw materials and abrasives in construction materials and mechanical processing. Bauxite is an important raw material for brown fused alumina smelting, and it is also the prerequisite for the survival of brown fused alumina. Most of the bauxite resources in my country are used to melt aluminum, and only a small part is used as refractory materials. fused alumina abrasive materials, ceramics and other chemical products have also been used as raw materials.
 
The rapid expansion of aluminum production in my country will result in a shortage of high-quality bauxite resources, and there are fewer bauxite sources that can be used to smelt brown fused alumina. At the same time, the quality of the bauxite ore of molten brown fused alumina is continuously decreasing, which means that the content of mineral impurities in the raw materials for smelting brown fused alumina is continuously increasing. This not only affects the smelting process and product quality of brown fused alumina, but also greatly increases the energy consumption of the melt. , The increase in energy consumption and production cost of high-temperature brown fused alumina smelting puts a lot of pressure on the survival of brown fused alumina manufacturers, with low profits and even losses.
With the increasing shortage of high-quality bauxite mines and the gradual decrease in production quality, the cost of raw materials for brown fused alumina smelting has continued to increase, and energy consumption has also increased. This is not conducive to the current industrial development strategy of energy saving and emission reduction of modern industrial technology, and is not conducive to molten brown fused alumina. Increasing the effective comprehensive utilization rate of my country's bauxite resources can enable the healthy and sustainable development of my country's brown fused alumina industry.