Abstract: Considering the unsatisfactory conditions of our existing grate cooler, i.e. the poor failure resistance, unstable operation, inconvenience for on-site inspection, slow troubleshooting, low stability of clinker layer control and high leak volume, some improvements were made, including changing the 6-row grate bed to 9-row grate bed, adopting the touch screen at the site and the double display in the central control room, developing the clinker bed temperature detection system to control the clinker layers, adding hydraulic oil flow pressure self-correction and feed forward control, optimizing algorithms and adopting the automatic adjustment to the pressure system settings. After the improvements, the operation reliability of the grate cooler is significantly improved, the secondary air temperature increases from 1 050℃ to 1 152℃, the average temperature of clinkers out of the grate cooler is about 85℃, and the power consumption for clinker production decreases to 60kWh/t.
