English
In the production of alumina, the filtering and washing efficiency of aluminum hydroxide directly affects the quality of the product alumina, equipment capacity, and energy consumption for calcining alumina. By adding a small amount of filter aid to the aluminum hydroxide washing water, it can adsorb onto the surface of aluminum hydroxide particles, transforming their hydrophilic nature to hydrophobicity. Consequently, the water adsorbed on the particle surface is repelled, while other water can smoothly flow out from the pores of the aluminum hydroxide particles, serving as a dehydration and filtering aid. This significantly enhances the efficiency of the filtering equipment and the production capacity of the calciner.
Due to the reduction in moisture content of the aluminum hydroxide entering the kiln, the amount of heat used for evaporating the entrained water is significantly reduced, thereby enhancing the production capacity of the calciner. After the use of a filter aid, the aluminum hydroxide slurry becomes easier to disperse and less prone to agglomeration, ensuring stable operation of the filter and increased filtration speed, which can improve the production efficiency of the filtration equipment.
This dewatering filter aid is inexpensive, produces minimal foam during use, can replace imported products, and can be used without altering the process equipment. It can save the amount of high-temperature washing water used and increase the output of the filter,
Reducing energy consumption in roasting and other processes has a significant effect on lowering energy consumption per unit of production and increasing production capacity.
