Fly ash is a kind of active mineral powder resources, research shows that, the fineness of fly ash is different, the influence of silicate hydrates are also different, the fineness of fine, the higher is the activity. Pulverized fly ash fly ash into concrete to make commercial role of raw material market, require the use of technology and the quality of its uniformity in accordance with the structure of concrete.
General grinding process can be divided into two kinds of open and closed circuit system. The closed loop system is the modern cement industry in order to improve the ability of a grinding vertical roller mill to reduce the cost of advanced technology is widely used in the series, is a classifier in the vertical roller mill back, make coarse, fine powder classification by fine grinding fineness by classifier, with fine particle processing requirements to finished products, and the do not meet the requirements of the coarse particle fineness returned to the vertical roller mill processing.
The most finely powdered fly ash grinding processing, domestic use of open system, some factories to reduce energy consumption, improve the efficiency of vertical roller mill, the fly ash into the vertical roller mill, coarse, fine grading by the first classifier, which meet the requirements of the fineness of fine ash no longer after grinding machine, directly into the finished product warehouse.
vertical roller mill production and comprehensive utilization of the project has been widely used in the fly ash, not only effectively reduce the pollution of the environment, but also to give the new economic value of fly ash. In the comprehensive utilization of fly ash, mainly the use of grinding machine for processing of fly ash, and then mixed with cement or lime mixing used as roadbed filler. Fly ash, lime and other mixed material to construct roads, airport and port road surface base has been widely used, and has achieved great success, but also greatly improve the...