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Stirring Desulfurization of Molten Iron is an effective pretreatment process aimed at reducing the sulfur content in molten iron to meet the stringent requirements for sulfur content in subsequent steelmaking processes. Below is a detailed introduction to Stirring Desulfurization of Molten Iron:

Process Principle

Stirring Desulfurization of Molten Iron primarily involves immersing a stirrer (also known as a stirring paddle) into the molten iron and rotating it to create a vortex. This vortex enables the added desulfurizing agent to fully mix and contact with the molten iron, thereby facilitating the desulfurization reaction. The desulfurizing agent reacts chemically with the sulfur elements in the molten iron, generating sulfides that float to the surface of the molten iron. Subsequently, these sulfides are removed through slagging operations, achieving the purpose of desulfurization.

Main Methods

Stirring Desulfurization of Molten Iron mainly includes the following specific methods:

KR Stirring Method: The KR method (Kambara Reactor) is a widely used stirring desulfurization technique developed by Nippon Steel Corporation's Hirohata Ironmaking Plant in 1965. This method employs a stirrer made of refractory materials that rotates in the molten iron ladle to create a "V"-shaped vortex. This vortex causes the desulfurizing agent particles to be dispersed within the paddle end area due to turbulent action, allowing them to fully contact, mix, and stir with the molten iron, achieving efficient desulfurization. The advantages of the KR method include high desulfurization efficiency, low consumption of desulfurizing agent, low metal loss, and short stirring time.

Other Mechanical Stirring Methods: Besides the KR method, there are also mechanical stirring methods such as the DO method, RS method, and NP method. These methods are similar to the KR method in terms of process principles but may differ in specific equipment and operating parameters.

Process Characteristics

Efficiency: Stirring Desulfurization enhances the contact and mixing of the desulfurizing agent with the molten iron through mechanical stirring, increasing the rate and efficiency of the desulfurization reaction.

Flexibility: Stirring Desulfurization allows for adjustments to the stirrer's rotation speed, immersion depth, and the type and amount of desulfurizing agent based on different desulfurization requirements and molten iron conditions, adapting to various production demands.

Wuhan Nanrui Engineering Technology Co., Ltd. is a high-tech enterprise engaged in the research and development, manufacturing, marketing, and technical services of industrial automation, metallurgical complete sets of equipment, system engineering, and continuous casting special measuring instruments. The company's management department is located in Wuhan Donghu High tech Zone, Optics Valley, China, and the production and manufacturing base is located in the adjacent Gedian Economic and Technological Development Zone. At present, we have more than ten patents, copyrights, and software products with independent intellectual property rights. The equipment production plant covers an area of more than 30 acres and has obtained ISO9001:2008 quality system certification; Wuhan University of Science and Technology is a teaching and research practice base with the ability to provide corresponding equipment for the metallurgical industry in terms of production, complete design, and supporting facilities.

Wuhan Nanrui Engineering Technology Co., Ltd. is a high-tech enterprise engaged in the research and development, manufacturing, marketing, and technical services of industrial automation, metallurgical complete sets of equipment, system engineering, and continuous casting special measuring instruments. The company's management department is located in Wuhan Donghu High tech Zone, Optics Valley, China, and the production and manufacturing base is located in the adjacent Gedian Economic and Technological Development Zone. At present, we have more than ten patents, copyrights, and software products with independent intellectual property rights. The equipment production plant covers an area of more than 30 acres and has obtained ISO9001:2008 quality system certification; Wuhan University of Science and Technology is a teaching and research practice base with the ability to provide corresponding equipment for the metallurgical industry in terms of production, complete design, and supporting facilities.

Wuhan Nanrui adheres to the concept of "people-oriented, customer first", and has gathered a team of high-level scientific research and development, production and manufacturing, marketing, and engineering services that are sincere and united. Over the years, with its forward-looking decision-making, strong capabilities, excellent quality, and comprehensive after-sales service, it has established a good corporate image in China. The corporate spirit of dedication, cooperation, and innovation has created Wuhan Nanrui.

Wuhan Nanrui adheres to the concept of "people-oriented, customer first", and has gathered a team of high-level scientific research and development, production and manufacturing, marketing, and engineering services that are sincere and united. Over the years, with its forward-looking decision-making, strong capabilities, excellent quality, and comprehensive after-sales service, it has established a good corporate image in China. The corporate spirit of dedication, cooperation, and innovation has created Wuhan Nanrui.

Wuhan Nanrui Engineering Technology Co., Ltd. is a high-tech enterprise engaged in the research and development, manufacturing, marketing, and technical services of industrial automation, metallurgical complete sets of equipment, system engineering, and continuous casting special measuring instruments. The company mainly produces products such as spray marking machines, deburring machines, blast furnace hot blast stoves, taper gauges, and iron desulfurization. Our management department is located in Wuhan Donghu High tech Zone, Optics Valley, China, and our production and manufacturing base is located in the adjacent Gedian Economic and Technological Development Zone. At present, we have more than ten patents and copyrights with independent intellectual property rights, and have obtained ISO9001:2008 quality system certification; Capable of providing corresponding equipment for the metallurgical industry in terms of production, complete design, and supporting capabilities.

Wuhan Nanrui Engineering Technology Co., Ltd. is a high-tech enterprise engaged in the research and development, manufacturing, marketing, and technical services of industrial automation, metallurgical complete sets of equipment, system engineering, and continuous casting special measuring instruments. The company mainly produces products such as spray marking machines, deburring machines, blast furnace hot blast stoves, taper gauges, and iron desulfurization. Our management department is located in Wuhan Donghu High tech Zone, Optics Valley, China, and our production and manufacturing base is located in the adjacent Gedian Economic and Technological Development Zone. At present, we have more than ten patents and copyrights with independent intellectual property rights, and have obtained ISO9001:2008 quality system certification; Capable of providing corresponding equipment for the metallurgical industry in terms of production, complete design, and supporting capabilities.

Wuhan Nanrui Engineering Technology Co., Ltd. is a high-tech enterprise engaged in the research and development, manufacturing, marketing, and technical services of industrial automation, metallurgical complete sets of equipment, system engineering, and continuous casting special measuring instruments. The company mainly produces products such as spray marking machines, deburring machines, blast furnace hot blast stoves, taper gauges, and iron desulfurization. Our management department is located in Wuhan Donghu High tech Zone, Optics Valley, China, and our production and manufacturing base is located in the adjacent Gedian Economic and Technological Development Zone. At present, we have more than ten patents and copyrights with independent intellectual property rights, and have obtained ISO9001:2008 quality system certification; Capable of providing corresponding equipment for the metallurgical industry in terms of production, complete design, and supporting capabilities.

Wuhan Nanrui Engineering Technology Co., Ltd. is a high-tech enterprise engaged in the research and development, manufacturing, marketing, and technical services of industrial automation, metallurgical complete sets of equipment, system engineering, and continuous casting special measuring instruments. The company mainly produces products such as spray marking machines, deburring machines, blast furnace hot blast stoves, taper gauges, and iron desulfurization. Our management department is located in Wuhan Donghu High tech Zone, Optics Valley, China, and our production and manufacturing base is located in the adjacent Gedian Economic and Technological Development Zone. At present, we have more than ten patents and copyrights with independent intellectual property rights, and have obtained ISO9001:2008 quality system certification; Capable of providing corresponding equipment for the metallurgical industry in terms of production, complete design, and supporting capabilities.

Wuhan Nanrui Company has developed a mature and economically beneficial blast furnace coal injection technology based on its successful experience in large blast furnace coal injection technology; KR molten iron desulfurization and single blowing granular magnesium desulfurization systems have been successfully used in multiple steel mills in China; Wuhan Nanrui has a complete product line of various continuous casting complete sets of equipment, with 17 years of experience in the production and service of continuous casting complete sets of equipment. Its flying hammer continuous casting slab deburring machine has excellent deburring effect and is the pioneer of deburring technology for both the upper and lower end faces of stainless steel slabs; The continuous casting slab arc aluminum wire spray marking machine produced works stably, with clear handwriting, and adopts full process automatic control, running well; The stability, accuracy, and functionality of the taper meter and opening degree detector for slab crystallizers exceed the level of domestic peers, and their products have been widely recognized by domestic slab manufacturers; The environmentally friendly automatic carbon spraying system can achieve full process automatic control and continuous flow adjustment; The intelligent electric furnace bundle oxygen gun and carbon oxygen combustion system can completely replace similar foreign products. Independently developed high-temperature ink wash coating, with smooth and clear printing without clogging the nozzle.

Wuhan Nanrui Company has developed a mature and economically beneficial blast furnace coal injection technology based on its successful experience in large blast furnace coal injection technology; KR molten iron desulfurization and single blowing granular magnesium desulfurization systems have been successfully used in multiple steel mills in China; Wuhan Nanrui has a complete product line of various continuous casting complete sets of equipment, with 17 years of experience in the production and service of continuous casting complete sets of equipment. Its flying hammer continuous casting slab deburring machine has excellent deburring effect and is the pioneer of deburring technology for both the upper and lower end faces of stainless steel slabs; The continuous casting slab arc aluminum wire spray marking machine produced works stably, with clear handwriting, and adopts full process automatic control, running well; The stability, accuracy, and functionality of the taper meter and opening degree detector for slab crystallizers exceed the level of domestic peers, and their products have been widely recognized by domestic slab manufacturers; The environmentally friendly automatic carbon spraying system can achieve full process automatic control and continuous flow adjustment; The intelligent electric furnace bundle oxygen gun and carbon oxygen combustion system can completely replace similar foreign products. Independently developed high-temperature ink wash coating, with smooth and clear printing without clogging the nozzle.

Wuhan Nanrui adheres to the concept of "people-oriented, customer first", and has gathered a team of high-level scientific research and development, production and manufacturing, marketing, and engineering services that are sincere and united. Over the years, with its forward-looking decision-making, strong capabilities, excellent quality, and comprehensive after-sales service, it has established a good corporate image in China. The corporate spirit of dedication, cooperation, and innovation has created Wuhan Nanrui.

Wuhan Nanrui adheres to the concept of "people-oriented, customer first", and has gathered a team of high-level scientific research and development, production and manufacturing, marketing, and engineering services that are sincere and united. Over the years, with its forward-looking decision-making, strong capabilities, excellent quality, and comprehensive after-sales service, it has established a good corporate image in China. The corporate spirit of dedication, cooperation, and innovation has created Wuhan Nanrui.

Wuhan Nanrui adheres to the concept of "people-oriented, customer first", and has gathered a team of high-level scientific research and development, production and manufacturing, marketing, and engineering services that are sincere and united. Over the years, with its forward-looking decision-making, strong capabilities, excellent quality, and comprehensive after-sales service, it has established a good corporate image in China. The corporate spirit of dedication, cooperation, and innovation has created Wuhan Nanrui.