To address dust pollution from haul roads in the Zijinshan Gold-Copper Mine, an environmentally friendly dust suppressant, ZJ801, was developed and tested in an industrial setting. The results show that ZJ801 has a

price advantage over commercially available products. When tailings powder was sprayed with 1 % ZJ801 solution, the moisture volatilization rate after 8 h was significantly better than the rate of 79.28 % under plain water spraying, indi-cating a pronounced moisturizing effect. However, increasing the concentration to 5 % did not significantly enhance the effect. In field trials using ZJ801, concentrations of PM2,, PM,o, and TSP gradually increased 3 days after spraying, with short-term exceedances in PM,,' and PM,o levels observed. Nevertheless, PM,s and PM,o concentrations per 24 h and hourly TSP meet the standards, i.e., the ambient air quality is consistent with the industrial zone standards throughout the 8-day test period after the dust suppressant is sprayed. ZJ801 showed significant suppression of PM,s and PM 10, comparable to the effect of more than 5 water sprayings per day on clear days. Based on these findings, it is recommended that when only water spraying is used, a minimum of 5 applications per day be scheduled between 20:00-06:00 and 12:00-18:00. When using ZJ801, a concentration of 2.5 % is advised, with gradually increasing spraying intervals until a dust suppressant film forms on the surface.