Acid Regeneration Sprayroasting - New Technology Hard Pellets Instead Powder Oxide

by Dr. Gerhard Frithum

Publisher - VALUTEQ process development GmbH Schönbrunnerstrasse 59-61, 1050 Wien, Austria

Category - Engineering & IT

Two main technologies are available on the market for HCl Acid Regeneration: Fluid Bed and Sprayroasting. Fluid Bed produces pellets 1-2 mm, but is more complex in operation and consumes +30% thermal energy. Sprayroasting produces fine red powder with flexible and stable operation and low energy consumption. Sprayroasting oxide has been the state of art technology especially installed in SE-Asia due to better economics and good market for the powder oxide up to now (Ferrites). During the last years market saturation for sprayroasted oxide has put pressure on the fine powder resulting in lower prices and difficulties to sell lower qualities. ASTEC Engineering has developped together with VALUTEQ a new process to make valuable oxide product by producing hard pellets for the reuse in the steel industry instead of powder – SINTOX Process.This new application combines only advantages of sprayroasting - (low consumptions and costs, flexible production) with fluid bed technology (pellets production). The produced hard pellets meet requirements of oxide pellets for steel production and have very interesting (global) sales price. Two main technologies are available on the market for HCl Acid Regeneration: Fluid Bed and Sprayroasting. Fluid Bed produces pellets 1-2 mm, but is more complex in operation and consumes +30% thermal energy. Sprayroasting produces fine red powder with flexible and stable operation and low energy consumption. Sprayroasting oxide has been the state of art technology especially installed in SE-Asia due to better economics and good market for the powder oxide up to now (Ferrites). During the last years market saturation for sprayroasted oxide has put pressure on the fine powder resulting in lower prices and difficulties to sell lower qualities. ASTEC Engineering has developped together with VALUTEQ a new process to make valuable oxide product by producing hard pellets for the reuse in the steel industry instead of powder – SINTOX Process.This new application combines only advantages of sprayroasting - (low consumptions and costs, flexible production) with fluid bed technology (pellets production). The produced hard pellets meet requirements of oxide pellets for steel production and have very interesting (global) sales price.

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