The Advantages and Disadvantages of Oil-based Needle Coke and Coal-based Needle CokeWhether it is oil-based needle coke or coal-based needle coke, the producti
The Advantages and Disadvantages of Oil-based Needle Coke and Coal-based Needle Coke
Whether it is oil-based needle coke or coal-based needle coke, the production process consists of three parts: raw material pretreatment, delayed coking and calcination.
The main difference in the production process between coal-based needle coke and oil-based needle coke is the pretreatment of raw materials. Oil-based needle coke is processed from heavy oil, and coal-based needle coke is processed from coal tar.
Oil-based coke products have a lower CTE value than coal-based coke products and have better thermal shock resistance. The resistivity of oil-based coke products is slightly lower than that of coal-based coke products.
Oil-based coke is more suitable for the production of high-quality graphitized electrodes, the main difference lies in the CTE value
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Harm of too high temperature: when molten steel out of cooper mold, the billet shell is thin and easy to break out; The accelerated erosion of refractory can ea
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1. The barrier function (mainly completed by the liquid slag layer) isolates the contact between air and molten steel, blocks the secondary oxidation of molten
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In continuous casting, low corrosion resistance often occurs, which directly leads to uneven composition and will eventually affect the smelting quality. In or