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我国至今没有专门生产铸造用焦的企业铸造焦的生产与应用长期没有引起人们的注意,建国三十多年来铸造用焦一直以冶金焦、化工焦或土焦代用,以致铸件质量差、废品率高,寿命短,严重影响机械工业的发展。铸造用焦与冶金用焦要求不同,冶金焦主要作为高炉冶炼的还原剂和热源;铸造焦主要用于加热熔化金属料以得到过热铁水(达1500℃以上,若用冶金焦代用只能达1420℃左右)。因此要求铸造焦块度大。强度高,
China has so far not specifically produced casting coke production and application of coke has not attracted people's attention for more than 30 years since founding of the foundry coke has been to metallurgical coke, coke or coke substitute, resulting in poor quality castings, waste High rate, short life, a serious impact on the development of machinery industry. Foundry coke and metallurgical coke requirements are different, metallurgical coke mainly as a blast furnace smelting reductant and heat; casting coke is mainly used for heating and melting of metal materials to obtain overheated hot metal (up to 1500 ℃, if the metallurgical coke substitute can only reach 1420 ℃ or so). Therefore, a large degree of coke casting requirements. high strength,