Third-generation grate cooler
2025-09-22
Third-generation grate cooler I. Basic information: Application and purpose: Dedicated for cement plants. Packaging: Sea freight. Automation level: Customizable according to customer needs. Origin: China. Customization services: Available for customization. II. Operating principle: Hot clinker is unloaded from the kiln mouth onto the grate bed, and is pushed along the entire length of the grate bed by reciprocating grate plates, forming a material bed of a certain thickness. Cooling air is blown into the material layer from below, penetrating and diffusing to cool the hot clinker. The cooling air after cooling the clinker becomes hot air, and the high-temperature hot air at the hot end is used as combustion air to enter the kiln and decomposing furnace (precalcining kiln system). Some of the hot air can also be used for drying. The use of hot air can achieve heat recovery, thereby reducing the heat consumption of the system; excess hot air will be discharged into the atmosphere after dust collection treatment. The cooled small clinker pieces fall into the conveyor behind the grate cooler through a screen; large clinker pieces are crushed and then cooled before being collected in the conveyor; fine clinker particles and dust leak through the grate seams and holes of the grate bed into the collection hopper. When the material level in the hopper reaches a certain height, the airlock valve controlled by the material level sensing system automatically opens, and the leaked fine material enters the material leakage chain conveyor below the machine and is conveyed away. When the residual fine material in the hopper can still seal the airlock valve, the valve plate is closed to ensure no air leakage.
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