外文翻译(中英文)立式辊磨机.doc

OK Vertical roller millMain features:OK vertical roller mills use 30%-50% less energy than ball mill systems. Simple layout and fewer machines in the mill circuit high run-factor and low maintenance costs. Excellent drying capability when grinding blast furnace slag or blended cements with wet components .Roller and table profile improve operating stability and reliability.Consistent cement quality with easy to adjust quality parameter Special design features for iron removal during slag grinding minimize wear Optimal wear-protection all internal surfaces Space-saving design reduces civil construction costsFlexibility to operate with two or four rollers guarantees long term availability.Application advantages Proven commercially, the OK mill is the premier roller mill for finish grinding of portland cement, slag and blended cemtrents. With a 30%-45% reduction in the energy requirements for cement grinding and 40%-50% for slag as com-pared with traditional ball mill operations, the OK mill can contribute significantly to your profitability and competitiveness. The design combines the drying, grinding and separation processes into just one unit, thus simplifying the plant lay-out. A low noise level makes outdoor installation feasible, substantially reducing civil construction costs and improving the working environment. Because of its highly effective drying performance, the OKmill is a natural choice for grinding blended cements with one or more wet componentsDesign advantages The OK mill uses a hydro-pneumatic system to press its grinding rollers against the material bed on the roatting grinding table. The grooved roller profile has two grinding zones, an inner and outer. This creates a high and concentrated grinding pressure on the outer path, allowinair to escape into the grooved centre. The inner path serves to prepare the grinding bed, by compressing the feedmaterial as it moves under the rollers nto the high pressure grinding zone. Segmented roller wear parts are made of the hardest possible material without risk of cracking and are very well suited or hard facing. Re-positioning of rollers is possible for evening out wear. These features ensure maximum longevity.Operating advantages The rollers are in a lifted position when the mill is started, ensuring trouble-free start-up . This eliminates the need for an auxiliary drive. A control system monitors the machinery and facilitates operation.Mill arrangement This schematic illustrates a typical grinding installation. The arrangement is very simple and the operation is correspondingly flexible and reliable. To maintain the appropriate temperature in the mill circuit. For example to ensure adequate dehydration of the gypsum when grinding cement-the layout is prepared with provisions for recirculation of hot exit gas to the mill inlet. In case the mill feed is wet slag or includes a significant portion of wet additives, addition heat must be provided, for inentance form a heat generator. Otherwise, if the mill feed is very hot, the mill exit temperature controls a damper for cold air intake.Nozzle ring bypass system For slag grinding, a specially designed nozzle ring bypass allow the iron particles to segregate through nozzles without airflow and subsequently be removed by a magnetic separator to minimise wear of the mill internals.One mill, many products The OK mill efficiently grinds blended cements, with a wide range of additives such as slag puzzolana, limestone and fly ash. Its versatility is demonstrated by the ability to switch between a wide variety of mixes, and to vary the particle size to meet individual needs.Particle size distribution Example of adjustment of particle sizedistribution when grinding to the sameBlaine surface. The required steepness of the particle size distribution curve is attained by sdjustment of the separatorrotor speed, the mill airflow rate and the grinding pressure, in combination with the appropriate height of the dam ring.Optimisation of operation Adjustment of mill airflow and grinding pressure for optimisation of the operatinon, including adjustment of the particle size distribution, can be made immediately. Adjustment of the dam ring, however, requires a mill stop, but only for a few hours. Switching between different types of products, for example from portland cement to slag, only requires easily made operating adjustments. Adjustment of the dam ring is not required. However, if the mill is to operate for a long time with one specific product only it may be expedient to adjust the dam ring to optimise the Residue(%)mill for operation with this specific product.Wear liners The wear liners of the grinding table and the rollers are of the segmented type and are therefore easy to replace when worn out.For mills grinding very abrasiva materallike slag, hardfaceing is an interedting and viable means of achievving a highavailability of the grinding system, optimising the grinding process and saving refurbishment costs. Hardfacing is an economical alternative to changing wear parts and is very Suitable for the high chrome cast iron grinding parts used in the OK mill. Being of the segmented type the wearliners can be hardfaced numerous times throughout their life.立式辊磨机主要特点：立式辊磨机比系统较简单的球磨机能够多利用30%-50%的能源。立式磨电路的简单的规划和较少的机器确保高流动因数和低的维护费用。当粉磨高炉熔渣或用湿的元素混合水时，具有优秀的干燥能力。轧辊及辊道剖面改善运转稳定性和可靠性。方便调整一致的水泥性质质量参数。特别的设计功能为在磨的熔渣期间将铁耗减到最少。在所有内部表面有着优秀的磨耗保护装置。节省空间设计减少工厂建筑成本。灵活的操作保证二个或四个辊的长期有效性。应用好处商业上证明，好的立式磨是最后加工的第一的辊轧机卜特兰水泥的轮磨，熔渣和混合水泥。用30%-45%减少能量需求的营业额为水泥磨矿渣作为比较，与传统球磨机营运组成，立式辊磨机可以到来很好的盈利。设计结合了干燥、粉磨和分离过程作为一个单元，因此减少了的开支。低噪音水平使室外安装可行，大大降低工厂建筑费用，改善工作环境。由于其高度有效的干燥性能，立式辊磨机是一种自然选择一个或一个以上的湿组件研磨混合材。设计优势立式辊磨机使用液压机启动系统坚持它的磨碎滚筒针对物质的床在轮流磨盘。槽滚筒剖面有而磨区，以内部和外部。产生一高的而且集中地外部路径的磨辊的压力，物料逃进沟槽中心。内路径服务准备砂轮清理台，由压缩给料物质由于它举动下滚筒不高压研磨区。被分割的滚轮磨耗零配件利用最难的合理的材料做成。没有风险裂纹而且非常很好地被适合或溶接硬面法。关于-轧辊的定位出自合理的磨耗。这些特征最大的限度的保证了利用率。经营优势无障碍启动辊磨机时，滚轮被举起。这就不需要一个辅助的驱动器。一种控制系统监控的机械和便于操作。辊磨机的布置这也就说明了一个典型的磨削原理