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摘要:
为解决正浮选赤铁矿精矿泡沫过于稳定的问题，从油酸钠的浓度、溶液的温度和pH值以及细粒赤铁精矿的粒级、浓度方面对泡沫稳定进行了研究。结果表明：油酸钠浓度对泡沫稳定性有显著影响，随着油酸钠浓度的增加，泡沫稳定性先增强后减弱最后基本保持不变，浓度为1×10-3 mol/L时泡沫稳定性最强；油酸钠在低浓度条件下，温度对泡沫稳定性有一定影响；在高浓度条件下，温度对泡沫的稳定性无显著影响；油酸钠在低浓度条件下，pH值为6~8时，泡沫稳定性最强，油酸钠在高浓度条件下，pH值为4~6时，泡沫稳定性最强；三相泡沫的稳定性与细粒赤铁精矿的粒级和浓度有关，在细粒级和高浓度条件下，泡沫的稳定性很强。
Abstract:In order to solve the problem of over-stable foam in the hematite concentrate of direct flotation, foam stability was investigated from the aspects of sodium oleate concentration, solution temperature, pH value, and the grain size and concentration of fine hematite concentrate. The results showed that the concentration of sodium oleate had a significant impact on foam stability. With the increase of sodium oleate concentration, foam stability increased firstly, then decreased, and finally remained basically unchanged. The most stable foam appeared when the concentration was 1×10-3 mol/L. Under the condition of low concentration of sodium oleate, the temperature had a certain effect on foam stability. At high concentration, temperature had no significant effect on foam stability. In the condition of low sodium oleate concentration, the foam stability was the strongest with the pH value of 6~8. In the condition of high sodium oleate concentration, the foam stability was the strongest with the pH value of 4~6. The stability of three-phase foam was related to the grain size and the concentration of fine hematite concentrate. Under the condition of fine grain size and high concentration, the stability of foam was strong.
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Key words:
- sodium oleate /
- foaming stability /
- fine hematite concentrate
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表 1 试样粒度分布结果
Table 1. Grain size distribution of the sample
粒级/μm +74 74~38 38~15 15~10 10~5 -5 产率/% 4.29 12.52 23.81 16.47 18.92 23.99 
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