Study on Pore Structure and Sulfur Fixation Characteristics of Alkali Industrial Waste

Pore structure of experiment alkali waste were investigated by Mercury Porosimetry, the influence of pore structure characteristics on their sulfur fixation performance were discussed, it can be found that little pores make a significant contribution to calcium utilization in the initial stage of reaction and at lower temperature, while bigger pores take effect in the later stage and at higher temperature, the range of effective aperture are different at different temperature, which respectively are from 0.005 μm to 0.02 μm at temperature from 1123K to 1223K and from 0.2 μm to 0.3 μm at temperature from 1223K to 1323K, the more pore in range of effective aperture, the better the sulfur fixation performance.