溢流分流兩段旋流器分選分級(jí)效果試驗(yàn)研究
發(fā)布時(shí)間：2018-08-10 20:45
【摘要】：基于多溢流管旋流器的概念,結(jié)合前人對(duì)煤泥旋流重選柱的研究,開發(fā)了一種新型兩段旋流器分選分級(jí)裝置,一段溢流經(jīng)分流后一部分直接由一段溢流管排出,另一部分沿切線由側(cè)溢流出口進(jìn)入二段旋流器進(jìn)行再一次分級(jí),可一次給料同時(shí)實(shí)現(xiàn)一段底流排矸,二段底流出精煤,一、二段溢流排細(xì)泥的目的。以麻家梁選煤廠粒度-3 mm煤泥為研究對(duì)象,分別對(duì)一段溢流管插入深度和側(cè)溢流連接口徑進(jìn)行了試驗(yàn)研究。結(jié)果表明:以上試驗(yàn)條件對(duì)該裝置的分選分級(jí)效果均有顯著影響,要保證一段分選分級(jí)效果,溢流管插入深度不能超過套筒深度;過大的連接口徑會(huì)造成二段底流精煤灰分偏高和二段旋流器分級(jí)性能下降。
[Abstract]:Based on the concept of multi-overflow cyclone and combined with previous researches on coal slime cyclone, a new type of separation and classification device for two-stage cyclone is developed. One section of overflow is discharged directly by a section of overflow pipe after shunting. The other part of the tangent line from the side overflow outlet into the two-stage cyclone for another classification, can feed at the same time to achieve a section of bottom flow waste, two stage bottom flow out of clean coal, the first and second stage overflow discharge of fine mud purposes. Taking the size 3-mm slime of Majialiang Coal preparation Plant as the research object, the penetration depth and the side overflow connection caliber of a section of overflow pipe were studied. The results show that the experimental conditions above have a significant effect on the separation and classification effect of the device. To ensure the separation and classification effect of one stage, the insertion depth of the overflow pipe can not exceed the sleeve depth. Too large connecting caliber will result in high ash content of two-stage bottom flow clean coal and poor classification performance of two-stage hydrocyclone.
【作者單位】： 太原理工大學(xué)化學(xué)化工學(xué)院;太原理工大學(xué)礦業(yè)工程學(xué)院;
【分類號(hào)】：TD462
[Abstract]:Based on the concept of multi-overflow cyclone and combined with previous researches on coal slime cyclone, a new type of separation and classification device for two-stage cyclone is developed. One section of overflow is discharged directly by a section of overflow pipe after shunting. The other part of the tangent line from the side overflow outlet into the two-stage cyclone for another classification, can feed at the same time to achieve a section of bottom flow waste, two stage bottom flow out of clean coal, the first and second stage overflow discharge of fine mud purposes. Taking the size 3-mm slime of Majialiang Coal preparation Plant as the research object, the penetration depth and the side overflow connection caliber of a section of overflow pipe were studied. The results show that the experimental conditions above have a significant effect on the separation and classification effect of the device. To ensure the separation and classification effect of one stage, the insertion depth of the overflow pipe can not exceed the sleeve depth. Too large connecting caliber will result in high ash content of two-stage bottom flow clean coal and poor classification performance of two-stage hydrocyclone.
【作者單位】： 太原理工大學(xué)化學(xué)化工學(xué)院;太原理工大學(xué)礦業(yè)工程學(xué)院;
【分類號(hào)】：TD462
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