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walking into the laboratory of shanxi chaopai calcined kaolin co., ltd., the reporter saw that the r&d personnel were testing a newly developed refractory material. after fully testing the chemical composition and strength, expansion coefficient and other indicators, the r&d personnel will continue to optimize the process formula in order to lay a solid foundation for further industrial production.

this high-tech enterprise located in the economic and technological development zone of shanyin county, shuozhou city, shanxi province, uses industrial solid waste coal gangue and fly ash as raw materials and clean energy natural gas as fuel. it produces kaolin products through closed calcination, which are applied to coatings, papermaking, rubber, refractory materials, precision casting and other industries, thus realizing the comprehensive utilization of solid waste resources. shi xingshun, the company's deputy general manager, told reporters that the company's newly developed products are made of 90% coal gangue and other non-metallic mineral materials, and are a refractory material with excellent comprehensive performance.

as one of the first 12 national demonstration bases for comprehensive utilization of industrial solid waste and pilot cities for regional industrial green transformation and development identified by the ministry of industry and information technology, shuozhou city continues to promote the transformation and development of the coal-fired power resource-based economy, relying on the coal-based kaolin resources associated with the coal production process to vigorously develop the comprehensive utilization of solid waste industry. at present, there are 170 solid waste comprehensive utilization enterprises, and the comprehensive utilization rate of coal-fired power waste has reached 73%. jiang siqing, secretary of the shuozhou municipal party committee, said that shuozhou city insists on placing the comprehensive utilization of industrial solid waste in a prominent position, relying on national and provincial scientific research institutes and platform institutions, and constantly exploring new channels for the comprehensive utilization of industrial solid waste. a large number of new technologies and new products have been born in shuozhou, and an effective way to utilize industrial solid waste resources has been initially explored.

shanxi jinkun mineral products co., ltd. is located in beiping circular economy park, pinglu district, shuozhou city. in its oil catalytic cracking precursor production workshop, coal gangue is calcined at high temperature to become white powdery kaolin, and then in the pulping tank, after multiple processes such as grinding and gelling, it becomes an oil catalytic product. li yajun, chairman of the company, said that the oil catalyst precursors produced by the company can improve the efficiency of oil refining, reduce production emissions, and improve the quality and efficiency of oil refining companies. so far, the company has turned "waste" into treasure using coal gangue as raw materials, producing more than 20 new products, and at the same time increasing the added value of the products.