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炭窑口硫铁矿的尾矿库选在距选厂3.5公里的山坡地带。为建造抗震性强、安全性高的尾矿坝,决定先进行水力旋流的尾矿分级和筑坝试验。 试验的主要设备为1台2/2PS砂泵和2台D250水力旋流器。经试验发现,若以43微米为分级界限,则沉砂中+43微米含量均可达90％左右,最大可达98.47％。沉砂的浓度约70％。溢流中-43微米的含量为55％,溢流浓度在20～30％之间。分级效率为56.65％,最高可为73.07％。水力旋流器的工作效果与进料压力关系密切,在炭窑口硫铁矿的尾矿分级试验中发现,当进料压力为0.4～0.6公斤/厘米_2时,工作效果较佳,进料压力>0.8公斤/厘米_2时,也有较好的分级效果。 在试验中,水力旋流器的进料方式分别为:高位矿浆槽进料、山上压送、直接泵压,这三种进料方式的分级效果如表所列。
Tailings of pyrite from charcoal kilns are selected on the slopes of 3.5 km from the mill. In order to build a tailings dam with strong earthquake resistance and high safety, it is decided to carry out tailing classification and dam construction test of the hydrocyclone first. The main equipment for the test is a 2 / 2PS sand pump and 2 D250 hydrocyclones. The test found that if the classification of 43 microns boundaries, grit +43 micron content can reach about 90%, up to 98.47%. Grit concentration of about 70%. The content of -43 micron in overflow is 55% and the overflow concentration is between 20 and 30%. Grading efficiency of 56.65%, up to 73.07%. The effect of hydrocyclone is closely related to the feed pressure. It is found in the graded tailing test of pyrite in charcoal kiln that when the feed pressure is 0.4-0.6 kg / cm 2, the effect is better. Material pressure> 0.8 kg / cm _2, there is a better grading effect. In the experiment, hydrocyclone feeding methods were: high slurry tank feed, pressure on the mountain, direct pump pressure, the grading effect of these three feeding methods are listed in the table.