Agglomeration-Flotation of Finely Ground Chalcopyrite and Quartz: Effects of Agitation Strength during Agglomeration Using Emulsified Oil on Chalcopyrite

被引：30

作者：

Hornn, Vothy ^{[1
]}

Ito, Mayumi ^{[2
]}

Shimada, Hiromasa ^{[1
]}

Tabelin, Carlito Baltazar ^{[3
]}

Jeon, Sanghee ^{[2
]}

Park, Ilhwan ^{[2
]}

Hiroyoshi, Naoki ^{[2
]}

机构：

[1] Hokkaido Univ, Div Sustainable Resources Engn, Grad Sch Engn, Sapporo, Hokkaido 0608628, Japan

[2] Hokkaido Univ, Div Sustainable Resources Engn, Fac Engn, Sapporo, Hokkaido 0608628, Japan

[3] Univ New South Wales, Sch Minerals & Energy Resources Engn, Sydney, NSW 2052, Australia

来源：

MINERALS | 2020年 / 10卷 / 04期

关键词：

agglomeration; emulsified oil; agitation strength; flotation; chalcopyrite; fine particles; separation efficiency; SELECTIVE AGGLOMERATION; COLUMN FLOTATION; COAL; FLOCCULATION; PARTICLES; RECOVERY; SULFIDES; AIR;

D O I：

10.3390/min10040380

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In flotation, the size of mineral particles is one of the most important parameters: when the size becomes fine, collision efficiency of the particles and air bubbles becomes low, causing low flotation recovery. To improve the collision efficiency and flotation kinetics, agglomeration using the emulsified oil of finely ground chalcopyrite (D-50 = 3.5 mu m) was carried out before flotation. In this study, the effects of agitation strength during agglomeration, kerosene dosage and potassium amyl xanthate (KAX) dosage on the flotation were investigated. Agglomeration using emulsified oil improved Cu recovery because the median diameter of agglomerate increased. With increasing agitation strength, KAX and kerosene dosages, Cu recovery was further increased. Agglomeration-flotation of a mixture containing chalcopyrite and quartz with 1:1 ratio (w/w, weight by weight) showed that Si recovery in froth was low and did not change with varying conditions (agitation strength, KAX and kerosene dosages); however, Cu recovery was significantly improved with increasing agitation strength, KAX and kerosene dosages, and thus the separation efficiency was improved.

引用

页数：12

共 33 条

[1] FLOCCULATION OF SULFIDES AND THE ROLE OF A COMPLEXING AGENT IN IT [J].