Study on Sintering Perforated Brick Technology Using Magnetite Ore Tail and Gangue

The tailing belongs to Handan-tailing which is a high calcium, magnesium tailings, the main mineral component is pyroxene, calcite, chlorite, white mica, etc. secondary mineral component is quartz, pyrite, feldspar. The average partical size of the mineral is 0.37 mm, viscous particle content of 18%. The plasticity of the tailings is better, and drying sensitivity of the tailings is lower. All tailings in condition of the water content 18% increase a certain amount of coal gangue , by the mixing, extrusion and forming could make Φ40 mm× 40 mm cylindrical samples, sintering at the temperature of 1110~1160 °C after natural dry, and its performance fully meet the requirements of GB13544-2000 standard and the middle strength for the MU20.