1. Production cycle is long. The production cycle of ordinary power graphite electrode is about 45 days, and the production cycle of ultra-high power graphite e
1. Production cycle is long. The production cycle of ordinary power graphite electrode is about 45 days, and the production cycle of ultra-high power graphite electrode is more than 70 days, while the production cycle of graphite electrode joint requiring multiple impregnated is longer.
2. High energy consumption. Production of 1t ordinary power graphite electrode requires about 6000kw h, thousands of cubic meters of gas or natural gas, and about 11t. of metallurgical coke particle and metallurgical coke powder。
3. There are many production processes. Production process includes raw material calcining, crushing and grinding powder, ingredients, mixing, molding, impregnation, graphite, and machining, etc.Its production needs many special machinery equipment and special structure of kilns, construction investment, investment long recovery period.
4. With a certain amount of dust and harmful gases generated in the production process, it is necessary to take perfect ventilation and dust removal and environmental protection measures to eliminate harmful gases.
5. Production of carbon raw material petroleum coke and coal asphalt for refining enterprises and coal chemical industry and processing by-products, raw material quality and stability is difficult to fully guarantee, especially high power and ultra high power graphite electrode production needle coke, modified electrode asphalt and low quinoline insoluble content special dipping agent asphalt, urgent attention and positive cooperation.
shengmiao
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
shengmiao
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