Oxidized Diesel for Lignite Flotation #worldresearchawards #researchaward #researcher #coalflotation

Lignite, a low-rank coal with high moisture content and abundant oxygen-containing functional groups, is notoriously difficult to process using conventional flotation techniques. Its naturally hydrophilic surface limits collector adsorption and reduces separation efficiency. This video explores how oxidized diesel can significantly enhance lignite flotation by modifying surface chemistry and improving hydrophobicity, leading to higher recovery and better coal quality.

Oxidized diesel contains polar functional groups such as carboxyl, hydroxyl, and carbonyl species formed during controlled oxidation. These groups interact strongly with the oxygen-rich surface of lignite through hydrogen bonding and chemical adsorption. At the same time, the hydrocarbon chains of diesel provide hydrophobic character, allowing lignite particles to attach more easily to air bubbles during froth flotation. This dual functionality makes oxidized diesel an effective and selective collector for lignite.

Experimental studies have shown that oxidized diesel improves lignite recovery, flotation kinetics, and selectivity while reducing reagent consumption. It also enhances bubble–particle attachment and stabilizes froth structure, resulting in more efficient separation from ash-forming minerals. Compared to traditional nonpolar collectors, oxidized diesel offers better compatibility with low-rank coal surfaces and performs well across a wider range of pH and operating conditions.

Beyond efficiency, this approach supports more sustainable coal processing by lowering chemical waste and improving resource utilization. Enhanced lignite flotation reduces energy losses, minimizes environmental impact, and supports cleaner fuel production.

Join us as we dive into the chemistry, mechanisms, and industrial significance of oxidized diesel in lignite flotation where surface science meets smarter mineral processing.

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