Study on low-temperature calcination technology of aluminum hydroxide
Alumina hydroxide calcination is the last process in alumina production,whose energy consumption accounts for about 30％of the alumina re-finery's entire energy consumption.How to reduce energy consumption per unit product is of great significance for cutting down operating costs,carbon and other pollutant emissions.Based on the research and analysis of the theory and field application of the gas suspension calcinator,this paper focuses on the relationship between the loss on ignition(LOI),weight loss rate,particle diameter,residence time and the calcination temperature,and puts forward a new low-temperature calcination technology to further reduce the calcination temperature on the basis of gas suspension calcination,thereby reducing the energy consumption per unit product as well as the emission of carbon dioxide and nitrogen oxides.
calcinatorlow-temperature calcinationLOIparticle diameterresidence time
万方数据
维普
