Cost comparison between top-mounted and side-mounted coke ovens
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For new coking projects being built in China today, top-charging type coke ovens (rammed coke ovens) are commonly used. What is the difference in investment costs between these and bottom-charging coke ovens? Could someone explain the infrastructure investment requirements for producing 1 million tons of coke?
Definitely, ramming requires a large investment; just the rammer itself costs 20,000 to 30,000. However, in the long run, tamping is still profitable. Firstly, in terms of raw material costs, in the coal mixture used for ramming, the proportion of bituminous coal can exceed 35%. Currently, the price of ordinary coking coal is as high as 600–700 yuan per ton. This results in a significant reduction in raw material costs. Moreover, an increased use of bituminous coal leads to an increase in both the quality and quantity of coke oven gas, thereby increasing the output of products derived from chemical processing. In fact, the main external economic benefit of coking plants comes from the chemical products sector!
The design cost for a 1 million-ton side-loading coke oven is 5 million. That’s all I know; the investment might be 200 million
Tamped coke ovens have higher costs, but offer better long-term benefits; the quality of the coke can be relatively well controlled, and there is a broad market for it.
It depends on the type of furnace: those being developed are 4.3m, 5.5m, and 6.25m in size; while those with a top-mounted design are 6.0m, 7.0m, and 7.63m in size； The investment costs for different furnace types vary greatly; how can they be compared? Based on production volume? It’s still an investment in tons of coke.
An investment of just over 200 million for 1 million tons is way too little; here we plan to invest at least 480 million.
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