Our reporter Xia Jiesheng

　　From the end of April to the beginning of May 2019, the No. 2 blast furnace steel of Shanxi Jianbang Iron and Steel Group Tongcai Trading Co., Ltd. has a volume of 1860 cubic meters. After the supporting hot blast furnace is completely cooled, some experts enter the furnace to check and see When taking pictures, it was found that the burner structure and nozzle structure were not damaged at all, which was the same as the original state of the masonry. The facts fully show that the working environment of the burner of the hot blast stove is very good, the burner structure is designed reasonably, the material is selected appropriately, and it has created a historical record of high air temperature in China, which has not been surpassed so far. It is currently the best, most stable and most successful in China. High-power energy-saving burner for hot blast stove. Moreover, the hot blast outlet of the hot blast stove did not appear oval, brick falling, or damage; the checker brick bed surface in the upper high temperature zone of the hot blast stove was flat without unevenness, indicating that the high temperature flue gas flow field generated by the upward spray mixed combustion was uniformly distributed. The hot blast stove project was contracted by Henan Yuxing Hot Stove Engineering Technology Co., Ltd. (hereinafter referred to as Yuxing Company) to construct Yuxing catenary vault-fired hot blast stove technology independently developed and designed.

Domestic marketing is in full swing

　　At present, Yuxing catenary vault top-fired hot blast stove and Yuxing four-section top-fired hot blast stove have not only become the preferred furnace type and development trend for the development of large-scale blast furnaces in my country, but also popular overseas. Since 2017, there have been 13 blast furnaces of 2000-3580 cubic meters that have been transformed and replaced only in Hebei Province, a major steel province in my country, of which 11 blast furnaces are equipped with Yuxing top-fired hot blast furnaces; the volume is below 2000 cubic meters Yuxing hot blast furnaces equipped with blast furnaces are even more numerous.

　　The reason why Yuxing hot blast stoves have developed so fast, and they are favored by so many customers in the major province of Hebei Iron and Steel, is actually a review of the history of the development of nearly 500 Yuxing top-fired hot blast stoves in my country’s steel industry since 2006. Trend analysis. For example, the two 1,360 cubic meters of blast furnaces built and put into operation in 2013 by Tangshan Ruifeng Iron and Steel Company, the 1416 that was built thereafter, and the 2,100 cubic meters of blast furnaces currently ordered are all equipped with Yuxing catenary top-fired hot blast furnaces. Among them, the hot blast furnace supporting the 1,360 cubic meter blast furnace has been expanded and transformed. When the furnace is shut down, the burner, hot blast outlet, vault (with a slight plug peeling off the door), and checker bricks are all intact. Such perfect results have enabled the company to obtain the right to order matching production capacity replacement hot blast furnaces for large blast furnaces.

　　Hebei Pingshan Jingye Iron and Steel Company has adopted 34 Yuxing catenary top-fired hot blast stoves since 2010, maintaining the characteristics of high air temperature, energy saving, and longevity. It also tested several catenary top-fired flue gases. The average nitrogen oxide content in the composition is only 37.5 mg/m3. Therefore, the hot blast stove system for the large blast furnace replaced by the new capacity was commissioned by Yuxing. So far, the total number of dedicated Yuxing catenary top-fired hot blast stoves There are 38 seats.

　　The No. 3 and No. 4 blast furnaces of Tangshan Zongheng Group Fengnan Iron and Steel Company are also equipped with Yuxing catenary top-fired hot blast furnaces. They are also in Tangshan Ruifeng Iron and Steel Company, Shanxi Tongcai Industry and Trade Company, Hebei Jingye Iron and Steel Company, Hebei Aosen Iron and Steel Company The company and other supporting Yuxing top-combustion hot blast stoves are signed for use on the basis of good use effect, high air temperature, and stable organization.

　　Laoting 3X3000m³, Jinxi 2X2000, and other large blast furnaces are equipped with Yuxing catenary top-fired hot blast furnaces.

International cooperation in the ascendant

　　Internationally, the blast furnace groups of iron and steel enterprises in India, Vietnam, Russia, Ukraine, Kazakhstan, South Korea, Malaysia, Turkey, Japan, Indonesia and other countries have been equipped with Yuxing hot blast stove technology and hot blast stove burner technology. Products.

　　Yuxing catenary vault top-fired hot blast stove technology is favored by India. India’s largest production capacity (with an annual output of 27.5 million tons of steel) Tata Steel Company. India’s annual steel output of 18 million tons, 14.86 million tons, 3.5 million tons of JSW, SAIL Steel Authority, Hoaphat Steel Company, and India’s largest state-owned steel design institute all invited Yuxing Company to these companies in India Conduct technical exchanges and discussions on catenary vault-fired hot blast stoves. The first Yuxing top-combustion hot blast stove equipped with the Indian Atibirndustries blast furnace has been completed and put into production, and its air temperature is about 150°C higher than that of the traditional hot blast stove. In addition, the company's second blast furnace is also equipped with Yuxing top-fired hot blast stove. The 600 cubic meter blast furnace of Gulong Iron and Steel Company in Indonesia is also equipped with Yuxing catenary vault-fired hot blast furnace. It can be said that Yuxing Company's catenary vault top-fired hot blast stove technology has penetrated into the iron and steel industry of Southeast Asian countries. It has become the industry's first choice for energy-saving, high-air temperature, long-life, and low-NOX technology products.

　　As early as 2008, Yuxing Company authorized the Russian Karukin Company the exclusive right to distribute Yuxing top-fired hot blast stove burner HRK products in the CIS countries, and cooperated with Danieli Company, PW Company and Siemens in Europe. Metallurgical engineering technology companies such as voestalpine, Kalugin of Russia, Mecon of India, and Pohang of South Korea have established technical cooperation relationships. Cooperating with Siemens VAI to jointly promote the use of Yuxing top-combustion hot blast stove technology in the international arena, especially cooperating with Siemens VAI on the Yuxing catenary top-combustion type supporting the 3800 cubic meter large blast furnace MMK11 in Russia Yuxing is here to bid for the hot blast stove and also wish Siemens VAI a successful bid.

For the fresh water

　　豫兴公司内外营销能取得如些骄人业绩，靠的是什么?该公司董事长刘世聚一语道破。靠的是十几年持续开展科技创新，以及积极推动产、学、研、用相结合，还靠优势的技术服务，并努力和国际国内知名冶金公司开展长期横向技术沟通合作，才打造了驰名中外的适用于顶燃式热风炉的燃烧器工艺和制品品牌，以及豫兴悬链线拱顶顶燃式热风炉、豫兴四段式顶燃式热风炉两种热风炉国际品牌技术。依靠上述品牌技术，豫兴公司为用户创造了价值，为企业节能减排降本增效做出了贡献，并赢得了用户的信任。豫兴四段式热风炉是原三段式顶燃式热风炉热风出口和锥形拱顶易高温、易垮塌、影响风温的条件下优化改进性技术，四段式顶燃式热风炉热风出口和锥形拱顶设计分离，巧妙的将热风出口和锥形拱顶的叠加应力和盲板力以及集中的其他应力分散转移至炉壳托板之上，可以使热风出口直段的涨缩自由而互不影响，经过改进后的四段式顶燃式热风炉是可以实现长期单一高风温的。豫兴悬链线顶燃式热风炉和四段式热风炉相比，具有低NOX、功率大、燃气省、效率高、风温高、寿命长等综合优越特点。