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Working environment of argon permeable bricks for bottom blowing in steel ladles
In the steelmaking process, the bottom-blowing argon process using porous plugs in the ladle is crucial. The function of the bottom-blowing argon porous plug is to stir the molten steel through bottom-blowing argon gas, allowing the molten steel to circulate and achieve the purpose of adjusting the molten steel composition and removing inclusions. Therefore, the permeability of the ladle porous plug has a significant impact on the secondary refining. If the permeability is poor or insufficient, the molten steel refining process cannot be completed. Conversely, excessive permeability will affect the service life of other refractory materials in the ladle lining.
Construction of overall breathable bricks and water-mouth bricks for steel ladles
The quality of ladle lining directly impacts the service life of the permeable bricks and water-mouth bricks, and may also affect the quality of the finished steel. Before lining, the existing refractory lining of the ladle needs to be removed. Before dismantling, adequate preparation is necessary. Firstly, carefully inspect the thickness of the ladle wall, bottom, water-mouth bricks, and permeable bricks, checking for any large gaps. Before entering the ladle, check the upper part of the ladle for any hanging or loose steel slag and address it accordingly to prevent injury from falling slag during operation.
Several factors affecting the use of steel ladle linings
Refractory materials used for steel ladle linings include porous bricks, water-mouth bricks, magnesia-carbon bricks, castables, etc. In addition to the influence of the ladle lining materials themselves, certain factors during use will accelerate their consumption, leading to a reduction in service life. (Figure) The temperature of the steel ladle pouring molten steel: To be precise, it should be the temperature of the molten steel in the steel ladle. The higher the temperature, the faster the dissolution and corrosion, and the shorter the service life. The steel ladle will go through baking, steel tapping, refining, and continuous casting processes, during which the temperature of the steel ladle fluctuates greatly, causing significant stress on the refractory lining.
The reason why argon-blown permeable brick ladles are used for continuous casting after refining
After the molten steel in the ladle is refined by argon blowing through porous bricks, it will be continuously cast. The role of continuous casting is to continuously cast the refined molten steel to produce steel products: qualified steel ingots or billets. The molten steel produced from the converter is transferred to the ladle, and after being refined by argon blowing through porous bricks, it will be cast into billets of the corresponding shape according to the steel plant's production process and requirements. The main equipment of the continuous casting section includes a turntable, intermediate vessel, crystallizer, cooling nozzle, flame cutter, etc.
Kechuang New Materials organized a joint party building activity
On June 26, Kexin New Materials, Zhongzhong Casting & Forging, China CITIC Bank, and CITIC Securities jointly organized a party-building activity to commemorate the founding of the Communist Party of China and celebrate its 100th anniversary. More than 30 people attended the event, including Wei Wenxu, Chairman of Kexin New Materials; Li Changyi, Deputy Factory Director of Zhongzhong Casting & Forging; Ma Xiaodong, President of China CITIC Bank Luoyang Pilot Free Trade Zone Technology Branch; and Zhang Qizhan, General Manager of CITIC Securities Luoyang.
Welcome County Party Secretary Zong Guoming to guide the work of Kechuang New Materials
On the morning of June 23, Zong Guoming, Secretary of the County Party Committee, led the heads of relevant departments including the Development and Reform Commission, the Natural Resources Bureau, the Science and Technology Bureau, the Statistics Bureau, and the Supervision and Inspection Bureau to conduct on-site office work in the Luoxin Industrial Cluster Zone, including several enterprises such as Kechuang New Materials, to coordinate and resolve the difficulties and problems encountered in the development of the industrial zone. County leaders Zhang Chaofeng and Jiang Zhiguo also participated in the activity.
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