The Influence of Microwave Pretreatment on the Surface Properties of Quartz and Feldspar Under Neutral Conditions
To address the challenge of ineffective flotation separation of quartz and feldspar,experiments were conducted employing microwave pretreatment to enhance the surface property differences between quartz and feldspar.The study investigated the impact of microwave pretreatment on the flotation recovery rates of quartz and feldspar under neutral conditions using a mixed collector of sodium oleate and dodecylamine,with sodium hexametaphosphate as an inhibitor.The experimental results showed that microwave pretreatment increased the flotation recovery rate difference by 11.87%.Adsorption experiments of reagents and Zeta potential measurements indicated that microwave pretreatment resulted in decreased adsorption capacity of reagents on quartz and increased Zeta potential,while it led to increased adsorption capacity of reagents on feldspar and decreased Zeta potential,suggesting that microwave pretreatment altered the adsorption capacity of minerals for reagents and increased the surface property differences between quartz and feldspar,thereby improving the separation efficiency.
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