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| Discussion on the Technical Transformation of LBTF2750 Pusher Grate Cooler |
| Gansu Jinchang Cement (Group) Co., Ltd. , Jinchang Gansu 737200, China |
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Abstract The LBTF2750 inflatable beam pusher grate cooler has issues with the structure of the rapid cooling grate bed and the unreasonable air distribution design. The secondary and tertiary air temperatures are low, leading to "air escape branch" and internal air leakage. Additionally, there are design flaws in the matching of the inflatable beam and the grate plate, which cannot meet the production requirements after kiln production. By replacing the rapid cooling grate bed and adjusting the fan configuration, converting the inflatable beam of the movable grate bed into an air chamber for air supply, demolishing and correcting the wear-resistant wall of the rapid cooling grate bed, and adding a "snow pusher" device, these problems have been effectively solved. After the transformation, the thickness of the material layer on the rapid cooling grate bed can be controlled within 800-1 000mm, and the air flow under the grate cannot blow through the material layer. The temperature of the second air is above 1 040℃, and the temperature of the tertiary air is above 920℃. The production output during cement grinding has increased by 5%, and the heat recovery efficiency and cooling efficiency of the grate cooler have improved significantly, resulting in obvious production increase and efficiency improvement.
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Received: 26 March 2023
Published: 25 September 2023
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