On June 29, Yankuang Group announced that the world's first coke oven powered by liquefied petroleum gas (LPG) was successfully operated on June 28 at 5:26 PM at Yankuang International Coking Co., Ltd. The facility produced 46.8 tons of metallurgical coke in its first run. This milestone marks a significant breakthrough in China’s coking industry. Wang Yashuai, a renowned expert in domestic coking technology, highlighted that this is the first large-scale coke oven in China and represents a successful integration and adaptation of German technology. He noted that China’s coking technology has made remarkable progress over the past two decades, now reaching an advanced global level. Yanjiao International Coking Co., Ltd. operates two high-efficiency coke ovens standing at 7.63 meters tall, making them the tallest in Asia. These ovens are 1.63 meters taller than the highest coke oven in China, located at Baosteel. They also feature the highest level of automation and the most comprehensive environmental protection systems in the country. Each oven contains 60 chambers, totaling 120 holes. The entire process from coal to coke takes just 25 hours per batch. Each chamber can handle 78.84 cubic meters of coal, with a designed output of 47.6 tons per hole. Together, the two ovens produce 2 million tons of coke annually—equivalent to the output of four of the most advanced 6-meter coke ovens domestically. Compared to traditional small-scale coking plants, Yanjiao International Coking’s wet quenching and dry quenching system reduces dust emissions to just 10 grams per ton of coke, far below the conventional 130 grams per ton in China. The gas purification and recovery system uses advanced technologies such as high-efficiency cooling, washing, desulfurization, and recycling, achieving a gas purity of 99.5%. These innovations represent some of the most advanced coking technologies globally and serve as a model for the future of China’s coking industry. Yankuang International Coking Company is a joint venture between Yankuang Group, Brazil’s CVRD, and Japan’s Itochu Corporation, with a total investment of 2.284 billion yuan. In addition to producing 2 million tons of coke annually, the facility also produces 200,000 tons of methanol and other chemical products like benzene and hydrazine. It incorporates advanced equipment and technology from the Sastur Coking Plant in Germany’s Ruhr region, along with upgrades to antimony ore processing. This allows each chamber to push 47.6 tons of coal using only 60 tons of coal, maximizing resource utilization of gas coal, fat coal, and main coking coal. Domestic coal currently costs 290 yuan per ton, but the first-class metallurgical coke produced by Yanjiao International Coking sells for 1,300 yuan per ton, increasing the value of coal conversion by 1,000 yuan per ton. This achievement not only helps the province’s steel industry save costs by avoiding foreign coke imports but also plays a vital role in advancing Shandong’s metallurgical sector. Furthermore, the production of high-quality, cost-effective coke is expected to drive structural adjustments within the local coking industry, pushing outdated, polluting, and energy-intensive small coking plants out of the market. This development signals a new era of sustainable and efficient coking in China.

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