斜窄流螺旋分级机的研制与工业试验

Development and Industrial Test of Tilting Narrow Upflow Spiral Classifier

为解决斜窄流分级设备高度高,与磨机构成闭路时给料不能形成自流而需耗费动力用泵输送的问题,将斜窄流分级设备与螺旋提砂器相结合,研制出了一种新的分级设备——斜窄流螺旋分级机。在云锡公司个旧卡房选厂的工业试验结果表明,与现场使用的螺旋分级机相比,斜窄流螺旋分级机的分级质效率提高3～15个百分点,单位能耗降低45%,而且单位造价处理能力是螺旋分级机的2.14倍。

The tilting narrow upflow classifier can not form a gravity flow of the feed when used in close circuit with grinding mill due to its great height and requires power for pumping. In view of this, new classification equipment is developed- tilting narrow upflow spiral classifier, which is based on the combination of tilting narrow flow classifier and spiral sand lifter. Its industrial test in Gejiu Kafang Concentrator of Yunan Tin Corp. shows that, compared with the site used spiral classifier, tilting narrow upflow spiral classifier can raise the quality efficiency of classification by 3 - 15 percentage points and reduce the unit energy consumption by 45% while the capacity per unit cost is 2.14 times that of spiral classifier.