OPERATING EFFICIENCY OF ROTARY CHARGING UNIT AS USED ON BLAST FURNACES AT THE WEST SIBERIA STEEL WORKS

摘要

As of late, there has been a growing interest among ironmakers in Russia and abroad towards the performance of the Rotary Charging Unit (RCU), used on blast furnaces, which has lead to the necessity to analyse once again its efficiency at the West Siberia Steel Works, both at the time of it being commissioned and what it is nowadays. The experts from WSSW and Totem Co. Ltd have carried out such an analysis jointly. RCU is an up-to-date charging device of new generation, with its salient feature being its rotating distributor of burden, which is located inside the furnace and designed as a five vane rotating propeller. The general view of RCU is given in Figure 1. RCU consists of the following main parts: guiding funnels to guide stock as it goes from skips to the receiving funnel; upper bell, transfer hopper/ lock with a gas isolator, which receives stock before it is sent into the furnace; lower bell; angular gearbox for the rotor drive; vane rotor. The charging process is controlled automatically through a specific automatic control system called "Rotor".