Ultra-high Basicity Sintering Production Practice of Pangang

Through Panzhihua V-Ti magnetite concentrate ultra-high basicity sintering production practice, the characteristics of ultra-high basicity sintering production are explored.The process should strengthen the use of quick lime and activity of ash, improve the agglomerate ratio of solvent, and take thick material layer and the principle of slow-speed machine, and the ratio of grain size of less than 3 mm for coke and anthracite can be controlled between 70% to 80%, FeO content of sintering ore can be controlled about 7.7%, Suitable moisture is between 7.2% to 7.3%.At the same time, the improvements on the burden distribution of a magnetic roller and the fuel secondary sub-plus and pairs of oblique igniter furnace are carried out, which will create conditions for improving the technical and economic indices of the high basicity sintering.The results showed that sintering crystallization conditions are improved, mineral compositions are optimized, metallurgical performance is improved, and the strength of sinter is improved.It should be noted that production of ultra-high basicity sintering greatly impact on the stability index of sinter, in particular, the R₀ stability rate of No.1 and No.2 period sinters has declined by 4.43 and 3.09 percentage points, the stability rate of TFe content of sinter decreased by 2.1 and 2.46 percentage points, which needs further technical breakthrough.