Lurgi Roaster Improve The Adaptability And Capacity Increasing Emissions Reduction Technology

In recent years, that the production of alumina calcination process, the Lurgi Roaster because of its high productivity, low energy consumption, environmental protection, etc to be widely adopted. Therefore, the matching cycle roaster system equipment and process modification to achieve the purpose of saving energy is a hot issue of concern.This paper point out the Lurgi Roaster (1#) poor adaptability, high quality requirements on raw materials, especially for thinner AH Bayer poor adaptive capacity due to low output load (loading rate can only add 60%), dust removal no compliance issues were studied. through the electric dust collector roaster, mechanical dust collector, cyclone dust collector and the corresponding locking devices of the system detects,and raw materials for baking AH, stove in the middle of calcined AO materials and finished sample analysis, using comparative research method, will run Lurgi Roaster and roaster in good condition compared to another study, obtained on the oven roasting crisp AH The effects of loading rate, in this based on the proposed adaptive capacity roaster Collecting reasonable way to improve.In fact, in 1# roaster system electrical and mechanical dust collector under the premise without any transformation, only the carrier for its preheating and cooling cyclone separator to improve the center tube, you can improve Lurgi Roaster system AH Bayer crisp and adaptability. Cyclone transformation of the central cylinder of exhaust pipe significantly reduces the return to the average particle size of materials to make 1# baking the dust collection system pressure greatly reduced emissions of dust concentration decreased from 609 mg/Nm3 to 99mg/Nm3; stove loading rate from 60% to 100%, unit energy consumption reduced by 20%.