论文部分内容阅读
本文通过浮选试验、电化学测试、电子能谱、X-射线衍射试验、ζ-电位测定及吸附量测定结果和溶液化学计算,系统地研究了硫化矿物无捕收剂浮选机理。提出:将硫化矿物的无捕收剂可浮性分为天然可浮性、自诱导可浮性与硫诱导可浮性。天然可浮性由矿物本身的结构决定。自诱导及硫诱导可浮性是在特定的矿浆电位条件下,或在特定的调整剂存在下,硫化矿物表面被诱发出疏水物质而形成的可浮性。元素硫是硫化矿物自诱导及硫诱导浮选时表面的主要疏水物质。
In this paper, flotation mechanism, non-collector flotation mechanism of sulfide minerals was systematically studied by means of flotation test, electrochemical test, electron spectroscopy, X-ray diffraction test, ζ-potential measurement, adsorption capacity measurement and solution chemistry calculation. It is proposed that the non-collector floatability of sulfide minerals can be divided into natural floatability, self-induced floatability and sulfur-induced floatability. Natural floatability is determined by the structure of the mineral itself. Self-induced and sulfur-induced floatability is the buoyancy created by the hydrophobic species being induced on the surface of sulphide minerals at a specific slurry potential or in the presence of a specific conditioner. Elemental sulfur is the major hydrophobic species on the surface of sulphide minerals induced by self-induction and sulfur-induced flotation.