Crushing is one of the most important links in the production of brown fused alumina, some of which need to be crushed a few times, it is inevitable to produce dust. But the dust is not external pollution, but the composition of brown fused alumina itself. Excessive inhalation of dust will harm the health of workers, the dust in the product will affect its performance and indicators. The vast majority of dust we will be through the professional dust collect equipment to be recycled, the dust product known as brown fused alumina dust collector fines. The residual dust is cleaned by the following methods.
1; Dry Wash: in the screening or magnetic separation process, through the use of natural wind blowing equipment to remove dust. This method has the advantages of low cost and high efficiency. However, it is only suitable for products with larger particle size
2; Water Wash: the screening of the brown fused alumina into the water immersion, and then drying in the drying equipment, or natural drying. This method can effectively remove dust, as well as the vast majority of impurities
3; Acid Wash: the screening of brown fused alumina into the sulfuric acid immersion, and then water washed. This process in addition to the effect of washing, pickling process will also be a part of the reaction in advance to enhance the performance of brown corundum. The washed brown corundum has better grinding ability, adhesion and hydrophilicity, and chemical stability However, the cost of water washing and pickling is high, and the efficiency is very low, to a certain extent, it will have an impact on the environment. Only suitable for high quality requirements of fine grain cleaning.