Coke oven coal collapse
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This post was last edited by cjzhou2 on 2011-9-13 09:48. Coal often collapses during loading – how to solve this? Thank you all.
Is the humidity of the coal briquettes within the required range? The last time I was on a business trip in Qitaihe, it happened to be the time when an accident occurred at a certain coking plant, where coal cakes collapsed and buried people. Safety incidents resulting in casualties must be given due attention.
1. Moisture content of coal fed into the furnace: 9.5–10.5. 2. Fineness of coal fed into the furnace: 88. 3. Ramming time. 4. Stroke of the ramming hammer: 400–450 mm
What was said upstairs is absolutely correct, but I would like to add something: when I’m on site, I encounter situations where the rammers lack responsibility and don’t perform their work properly. Attention should also be paid to the issue of missing tamping hammers.
I think there are several reasons for coal collapse: 1. The quality of the coal itself is not very good. 2. The ratio is inappropriate. 3. The specifications for the blending coal are not met. 4. There are problems with the equipment, such as a lack of ramming hammers or abnormal operation, or shaking of the coal loading vehicle. 5. Careless operation.
I think there are several reasons for coal collapse: 1. The quality of the coal itself is not very good. 2. The ratio is inappropriate. 3. The specifications for the blending coal are not met. 4. There are problems with the equipment, such as a lack of ramming hammers or abnormal operation, or shaking of the coal loading vehicle. 5. Careless operation.
I think there are several reasons for coal collapse: 1. The quality of the coal itself is not very good. 2. The ratio is inappropriate. 3. The specifications for the blending coal are not met. 4. There are problems with the equipment, such as a lack of ramming hammers or abnormal operation, or shaking of the coal loading vehicle. 5. Careless operation.
Make sure the bottom coal is crushed thoroughly; don’t make the ends too high! ! ! Personal advice!
The moisture and fineness of the coal fed into the furnace are crucial; especially moisture is a complex and problematic factor, as it causes severe coal collapse on rainy days. Experience in tamping coal loading operations must be continuously summarized, and efforts in this area must be sustained.
The main factors affecting this are coal quality and operating procedures. Regarding coal quality, attention should be paid to moisture levels and the degree of fineness control. As for operating procedures, it is important to consider the time taken for ramming; if this time is too long, the friction between the coal support plate and the coal cake increases, which can lead to the collapse of the coal when trying to remove the support plate. If the ramming time is too short, the strength of the ramming is insufficient, again resulting in coal collapse.