With urban economic growth,the urban ecological and environmental pollution is deteriorating. In turn,ecological and environmental pollution restricts urban economic growth. To realize coordinated development of urban...With urban economic growth,the urban ecological and environmental pollution is deteriorating. In turn,ecological and environmental pollution restricts urban economic growth. To realize coordinated development of urban economic growth and urban ecological environment,it is recommended to vigorously develop low carbon economy. On the basis of basic situations of ecological and environmental pollution in Jiangxi Province,following the connotation and development principle of the low carbon economy,this paper discussed ideas of ecological and environmental protection in Jiangxi Province,to lay a solid foundation for better promoting social and economic growth.展开更多
Fluorine in mold powder is known as harmful to human health and the environment. Being the advocate of green production, Baosteel developed an environmentally friendly mold powder without fluorine. The main problem of...Fluorine in mold powder is known as harmful to human health and the environment. Being the advocate of green production, Baosteel developed an environmentally friendly mold powder without fluorine. The main problem of fluorine-free flux film is small heat resistance and thus the heat transfer intensity of the mold is too large, which to some extent hinders the increase of the casting speed. With the heat flow simulation equipment, controlling precipitation of crystal in flux and solidification temperature properly, fluorine-free mold powder for low carbon steel,which substitutes F with B203 ,was successfully developed and applied in industrial production. The production results show that, by using boronic fluorine-free mold powder,the boron increment in molten steel is less than 1.3ppm for conventional aluminium killed low carbon steel.展开更多
文摘With urban economic growth,the urban ecological and environmental pollution is deteriorating. In turn,ecological and environmental pollution restricts urban economic growth. To realize coordinated development of urban economic growth and urban ecological environment,it is recommended to vigorously develop low carbon economy. On the basis of basic situations of ecological and environmental pollution in Jiangxi Province,following the connotation and development principle of the low carbon economy,this paper discussed ideas of ecological and environmental protection in Jiangxi Province,to lay a solid foundation for better promoting social and economic growth.
文摘Fluorine in mold powder is known as harmful to human health and the environment. Being the advocate of green production, Baosteel developed an environmentally friendly mold powder without fluorine. The main problem of fluorine-free flux film is small heat resistance and thus the heat transfer intensity of the mold is too large, which to some extent hinders the increase of the casting speed. With the heat flow simulation equipment, controlling precipitation of crystal in flux and solidification temperature properly, fluorine-free mold powder for low carbon steel,which substitutes F with B203 ,was successfully developed and applied in industrial production. The production results show that, by using boronic fluorine-free mold powder,the boron increment in molten steel is less than 1.3ppm for conventional aluminium killed low carbon steel.
