Effect of frother type and operational parameters on nano bubble flotation of quartz coarse particles
Effect of frother type and operational parameters on nano bubble flotation of quartz coarse particles
复制标题
起泡剂类型和操作参数对石英粗颗粒纳米气泡浮选的影响
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
B. Shahbazi
中科院分区：
文献类型：
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作者：
Sabereh Nazari;S. Z. Shafaei;M. Gharabaghi;R. Ahmadi;B. Shahbazi
利用纳米气泡(NBS)考察了起泡剂种类(MIBC、松油和A65)和操作参数(叶轮转速和空气流量)对石英粗粒浮选的影响。采用粒度为-425+106 mm的石英粉和三种起泡剂进行浮选试验。叶轮转速为600~1300rpm，空气流量分别为30和60 L/h。在没有NBS的情况下，松油起泡剂的采收率最高，叶速为1000rpm，空气流量为60 L/h。在NBS的存在下，松油的采收率最高，叶速为900rpm，空气流量为30 L/h。但与没有NBS的MIBC相比，增加采收率的效果更好。使用该起泡剂的采收率提高了25%，而使用松油的采收率提高了23%。在有NBS存在的情况下，使用A65的回收率最低。此外，与不使用NBS相比，使用NBS提高了所有三个组分的回收率，但NBS的存在增加了-212+106 mm颗粒的回收率，比-300+212和-425+300 mm范围内的颗粒回收率高。
In this work, the effects of the types of frother (MIBC, pine oil, and A65) and operational parameters (impeller speed and air flow rate) on the flotation of quartz coarse particles was investigated using nano bubbles (NBs). Quartz particles of the size of -425+106 mm and three types of frother were used for the flotation experiments. Also the impeller speed was 600 to 1300 rpm, and the air flow rates were 30 and 60 L/h. In the absence of NBs, the maximum recovery was achieved with the pine oil frother, an impeller speed of 1000 rpm, and an air flow rate of 60 L/h. In the presence of NBs, the maximum recovery was achieved using pine oil at an impeller speed of 900 rpm and an air flow rate of 30 L/h. However, increasing the recovery in the presence of NBs, compared to the absence of NBs for MIBC, was more than the other two frothers, and the recovery using this frother to increase up to 25% but using pine oil, the recovery increased up to 23%. The lowest recovery in the presence of NBs was obtained using A65. Also the use of NBs increased recovery in all the three fractions compared to the absence of NBs but the presence of NBs increased the recovery of particles with size of -212+106 mm more than the particle size in the ranges of -300+212 and -425+300 mm.