外文翻译外文文献英文文献新型粉煤灰烘干机技术性能介绍英文

Technical performance of the new dryer introduction of fly ash Drying technology is the production of fly ash, slag powder and other key technologies must be matched, I wet fly water for large proportion of small, fine grain size, and other notable features, the development of new and efficient drying of fly ash machine, the device compared with other drying equipment, production capacity, continuous operation; structure is simple, easy to operate; less failure, low maintenance costs; for a wide range of fluid resistance is small, you can use it dry granule-like material, for adhesion of the material that is also very beneficial to large; operating flexibility, allowing the production of greater fluctuations in the flow of product range, will not affect the quality of the product; cleaning easy. The equipment is now in Henan, Anhui and other enterprises put into use, and create considerable economic benefits. New Fly Ash dryer - energy efficient, environmentally friendly.

China's cement industry in recent years, a major breakthrough in comprehensive utilization of resources, waste cement industry consumptive use of solid waste in the country total more than 80%. By using less clinker cement industry, more powder, the cement produced in low-capital technologies that can maximize the consumption of electric power, metallurgy, coal industry produced fly ash, slag, coal gangue and other industrial waste. Our process uses traditional cement clinker produced, mixed material mixing mill, mill production is low, high energy consumption, waste slag and other materials used only as a hybrid, mixing amount of not more than 30%. Use of clinker, slag grinding process, respectively, the use of slag fine powder in the high state of good activity can be used as the main component of cement characteristics, the preparation of "blending" of cement, admixture of 50% -60%, can substantially reduce the cement produced in the capital. Waste produced by the cement industry, based on a variety of waste powder admixture fair match to progress in concrete density, the formation of low density, high density, low defect structure, much progress in concrete life.

China's annual industrial waste slag produced billion -16 billion tons of fly ash and gangue -6 reached 400 million tons, flooded areas in the department. Take advantage of cheap local coal ash, slag and other waste of resources produced in low-capital high performance green cement, cement

manufacturing is the transformation of the region an important way.

Energy saving is a saving society, an important prerequisite for a harmonious society, but also cement the most effective way to profit growth. Energy efficiency is progress, but decided to advance the hub grinding efficiency is to reduce the moisture content of raw materials. Because fly ash, slag, etc. into the plant when the water is too large, is not conducive to ground, resulting in low yield milling system, full grinding and grinding, such as grinding paste deterioration in working conditions, must first dried before grinding into dehydration. Therefore, the fly ash produced dryer comprehensive utilization of fly ash with good development prospects. New Fly Ash dryer is produced in high energy-saving technology of fly ash, slag powder and other equipment necessary for supporting the hub, in the promotion of energy efficiency of cement, representing centrifugal dewatering equipment, the old vertical dryer, in the design, energy efficiency and practical applications have great breakthrough.

Old vertical dryer. Equipment from external burner, vertical dryer composed of host and environmental protection equipment, vertical assemble a brick inside the dryer, how abdominal group and the sliding hopper feed bowl set. Its working principle is: material handling equipment into the upper vertical dryer, set by its own gravity through the hopper, slide pots expected drop in sink. Burner to create heat, heat exchange through the vertical dryer, after discharge of environmental protection equipment. Course materials collection hopper and slip angle of the basin slowed down the speed of the material to extend the time for heat exchange materials, but materials, materials in the collection hopper and slip sliding is the central basin discharge, the formation of the wind tunnel is in use a lot of heat Air filter materials, coupled with the continued cooling tube burner, thermal efficiency is only about 50%. The device's strengths are: small size, less investment; disadvantage is that: ① the high consumption of coal, about 50% utilization of geothermal energy; ② high power consumption, power consumption 4kWh tons of dry material around; ③ adaptability, and tend to occur the material, sealing; ④ more stringent requirements on

coal-fired heating; ⑤ drying quality can not control.

Previous centrifugal dewatering machinery, equipment expensive, low capacity, dehydration rate of small, usually only one precipitation 10% --- 20% of the remaining 15 water. The new full set of fly ash from the dryer three sectors: heating system, heat exchange system and to take the air dust removal system. Heating systems using hot stove technology sector, adequate heat, heat effect, structural simplicity; heat exchange system is the drying cylinder, the cylinder body lifting plate arranged in spiral staggered repeatedly Young Caesar materials, high efficiency heat exchange ;