Analysis on Electricity Consumption for Titanium Slag Smelting with Prereduced Concentrate Pellets

Electricity consumption for titanium slag smelting with Panzhihua titanium concentrates is higher than that of the international advanced smelting technologies.However,it can be significantly reduced as prereduced Panzhihua titanium concentrates are used for the smelting.According to basic data obtained in industrial tests that have been carried out,combined with the main components of titanium concentrates and reducing agents,the chemical compositions of prereduced concentrate pellets with different metallization ratio are tested and calculated.On this basis,through thermodynamic calculation,electricity consumption for the smelting with the prereduced pellets charged into furnace at room temperature or 800℃ are calculated.The results show that prereduction of titanium concentrates is an effective way to reduce the electricity consumption of slag smelting.As the pellets with a metallization ratio of 60% instead of fine ores are charged into the furnace,the electricity consumption for smelting 1 metric ton of titanium slag is reduced from 2 800 kWh to 1 948.5 kWh.As they are charged at the temperature of 800℃,it can be further reduced to 1 523.1 kWh,which shows a good application prospect.