外文翻译---细粒方铅矿和闪锌矿的絮凝浮选

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1、附录 相关文献原文及译文 英文原文： Fine-grained galena and sphalerite flotation flocculation Abstract: In this paper, the formation of floc in the conduct of fine-grained galena and sphalerite flotation, flocculation and flotation that. By potassium amyl xanthate and kinetic energy change caused by the hydrophobic

2、flocculation of mineral to form floc.The study is the monomer-20m trace minerals flotation and floc size determination. Of pH, potassium amyl xanthate (PAX) concentrations, kerosene dosage and mixing intensity and other parameters on the flocculation Flotation. The results show that the floc size on

3、 the effect of flocculation flotation great influence.The appropriate operating conditions, galena and sphalerite flocculation flotation recovery rate 100%, while the conventional flotation recovery rate of only 40%.The experiment also found that adding a small amount of kerosene to improve the flot

4、ation, which greatly reduces the amount of PAX.Also used in Mexico ReydePlata disseminated sulfide minerals (lead, zinc, silver and gold) for the flocculation flotation test. The results show that not only reduces the loss of valuable metals in tailings, and the selection efficiency has been greatly

5、 improved concentrate grade and recovery rate is much higher than conventional flotationThe former may be due to the high rate of fine useful minerals, which may be due to floc formation and the addition of kerosene to make useful minerals flotation faster. Keywords: Sulfide minerals Fine dressing F

6、locculation Foam flotation Summary: Froth flotation ore only a narrow particle size fraction is more effective on the other flotation of ore particle size fraction effect is greatly reduced (Gaudin, et al, 1931； Colins and Jamesion, 1976； Arbiter, 1979). The effective grain size with the flotation o

7、f mineral types and pharmaceutical systems change, for example, the effective flotation of galena grain size for the 6-70m, sphalerite for the 8-90m, chalcopyrite for the 15-60m, yellow iron ore for the 20-150m (Trahar and Warren, 1976). Generally considered difficult to flotation of fine mineral wa

8、s mainly due to the quality of small and large specific surface area, leading to mineral particles and the small probability of bubble collision and adhesion. However, if the ore particle surface composition, oxidation, mineralogical composition and the concentration of soluble ions and other factor

9、s also affect the fine mineral flotation (Somasundaran, 1980). There are two difficulties to improve the flotation of fine mineral methods: the particle size increased flotation and reducing bubble size. The former is by selective flotation particles together, then formed floc flotation of fine part

10、icles, the law shall flocculation flotation. The latter is represented by the vacuum flotation and electrolytic flotation. In the flocculation flotation, flocculation interactions instead of fine particles and bubbles, fine particles and air bubbles to avoid the collision and adhesion of the small c

11、hance of problems. The floc is usually formed through hydrophobic flocculation can lead to mineral particles of hydrophobic and kinetic energy changes (Xu and Yoon, 1989； Warren, 1992； Song and Lu, 1994； Lu, et al, 1999). Coagulation with the electrolyte and polymer floc comparison, hydrophobic floc

12、 foam flotation is more suitable because of their hydrophobic surface, the structure is more compact, more intense flocculation. With selective hydrophobic flocculation of fine mineral-based flocculation flotation shown in Figure 1. Flocculation flotation is the core of fine-grained selective hydrop

13、hobic flocculation of minerals, including decentralization, selective and hydrophobic hydrophobicity of the formation of floc. Add mixed with pH adjustment agent dispersion effects dispersant can play the role, to prevent condensation of fine minerals, which reduces the efficiency of mineral separat

14、ion. In addition to the natural hydrophobicity of minerals, the selectivity generally by hydrophobic adsorption of collector on the flotation of the particles formed. Hydrophobic floc is formed by mechanical agitation, by the hydrophobicity of mineral particles enter the kinetic energy to overcome t

15、he energy barrier to form. Hydrophobic flocculation depends on the degree of hydrophobic particles, adding non-polar oil (Capes and Germain, 1982； Song, et al, 1999) or hydrophobic coarse particles (Chia and Somasundaran, 1983) and bubble (Drzymala, et al, 1986 ) greatly enhanced through the hydroph

16、obic flocculation. Fig 1: basis of selective hydrophobic flocculation flotation diagram. Arrows indicate the composition of the process of flocculation-flotation method Flocculation and carrier flotation flotation has long used the shear flocculation flotation. Carrier through hydrophobic flocculati

17、on flotation to fine particles adhesion on the basis of coarse particles, and coarse particle flotation. For example, the use of coarse particles as carrier, tall oil and fuel oil for flotation, Flotation of anatase from kaolin effect has been greatly improved (Seeton, 1961； Greene and Duke, 1962).

18、Another example is coarse-grained hematite and hematite mineral mud sodium and kerosene oil is available for collectors to separate (Cristoveanu and Meech, 1985). Shear flocculation and flotation for the first time disseminated in scheelite ore flotation experiments (Koh and Warren, 1977), fine-grained scheelite flocculation is due to the adsorption of oleic acid and the application of strong shear stress caused. This method has been successfully used in Sweden Yxjoberg Scheelite Ore Dressing