Theoretical and experimental study on high-entropy flotation of micro-fine cassiterite

Tin is a critical metal for various industries, making its recovery from low-grade cassiterite ores crucial. This study aimed to optimize the flotation recovery of cassiterite using multi-component collector systems. Several collectors were initially selected through micro-flotation tests, leading to the identification of optimal proportions for a four-component collector system (SHA-OHA-SPA-DBIA in a 4:3:2:1 ratio). Molecular dynamics simulations and surface tension tests were used to investigate the micellar behavior of these collectors in aqueous solution. The adsorption characteristics were quantified using microcalorimetry, enabling the determination of collection entropy and changes in Gibbs free energy.…