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本文研究了在浮选中泡沫相对疏水颗粒的捕收。研制了能将泡沫相与矿浆分隔开的连续浮选机。粒度为d80 =87μm的赤铁矿在矿浆中用常规的油酸钠浮选 ,将类似粒度的 (d80 =82 μm)玻璃颗粒在添加清洗水时添加到泡沫相中。用接触角 0°～ 82°的 4种玻璃颗粒作为试验样品。研究结果表明 ,泡沫对疏水颗粒的捕收效率是很高的。颗粒的疏水性和泡沫中适于颗粒附着的表面积对该过程影响很大。对泡沫相浮选捕收玻璃颗粒推荐了一些参数 ,特别是以接触角描述的疏水性、泡沫厚度、向泡沫给料的固体浓度、空气流速和清洗水流速
This paper investigates the collection of relatively hydrophobic particles in flotation. A continuous flotation machine was developed that separates the foam phase from the pulp. Hematite with a particle size of d80 = 87 μm was flotated in the slurry with conventional sodium oleate, and glass particles of similar particle size (d80 = 82 μm) were added to the foam phase upon addition of wash water. Four kinds of glass particles with a contact angle of 0 ° to 82 ° were used as test samples. The results show that the foam collection efficiency of hydrophobic particles is very high. The hydrophobicity of the particles and the surface area suitable for particle attachment in the foam greatly influence the process. Some parameters are recommended for capturing glass particles by froth phase flotation, particularly the hydrophobicity described in terms of contact angle, the thickness of the froth, the solids concentration fed to the froth, the air flow rate, and the wash water flow rate