Abstract:

By-products from different locations of the lime production lines were collected and analyzed.The absorbent suitable for LJS sintering fume dry desulfurization was prepared by compound method using different kinds of by-product samples.According to the characterization of TGA,BET,XRF,etc.,the compound of 90% screening by-product and 10% suspension kiln by-product was qualified to be used as  absorbent for sintering fume.The analysis results showed that absorbent prepared from the above mentioned compound contains more than 60% Ca(OH)2,the BET surface above 19m2·g-1 and D50 below 45μm,Fe2O3 is below 0.2%,Cl is below 0.007%,with little risk for the equipment corrosion and erosion.Using by-products from lime kiln for sintering fume cleaning in the same iron and steel plant is technically feasible with good economy.