摘要
为解决浮选精矿泡沫稳定性强、粘度大,难以自然消除的问题,以河南神火矿区浮选精矿为对象,探索通过机械搅拌消除泡沫的可行性。试验结果表明:试验范围内,搅拌轴转速、搅拌时间、叶轮片数均对消泡效果有极显著或显著的影响,且叶轮片数的影响最显著,搅拌时间次之,搅拌轴转速影响最小;随着搅拌速度或叶轮片数的增加,消泡率呈先增加后减少的趋势,随着搅拌时间的增加,消泡率呈先增加后趋于稳定的趋势;试验范围内,在搅拌轴转速为418 r/min、搅拌时间为3 min、叶轮片数为4个的条件下,浮选精矿消泡效果最好,消泡率平均值高达84.93%。
Flotation concentrate is hard to get naturally defoamed because the foam is highly stable and viscous in nature. To tackle this problem,experimental study is made on the feasibility of defoaming through mechanical agitation with the flotation concentrate from Shenhuo mining area,Henan Province as the object of study. Result of test shows that the agitator speed,stirring time and number of blades all exert significant or noticeable effect on defoaming efficacy. Among them,the number of blades plays a most pronounced role which is followed by stirring time,with the stirring speed producing a least influence. With the increase of speed and number of blades,the rate of defoaming tends to first go up and then drop down. With the increase of stirring time,the defoaming rate is seen to first increase and then remain stable. An optimum defoaming performance can be expected at a stirring speed of 418 r / m,a stirring time of 3 minutes and a number of 4 blades. In this case,the defoaming rate is up to 84. 93 percent on average.
出处
《选煤技术》
CAS
2016年第1期19-23,共5页
Coal Preparation Technology
关键词
浮选精矿泡沫
机械搅拌
稳定性
粘度
消泡率
flotation concentrate froth
mechanical agitation
stability
viscosity
defoaming rate
作者简介
徐胜（1982-），男，重庆市丰都县人，工程师，从事选煤厂设计管理工作。E—mail：hyxs118@126．com Tel：15836936055
