Research and application of new flotation reagents in Shaqu Coal Preparation Plant
WANG Jinlong
Abstract：To fundamentally eliminate potential safety hazards,reduce occupational health risks,improve the on-site environment of coal slime flotation,enhance flotation efficiency and resource utilization,and fundamentally resolve the issue of"heavy medium ash carry-over"caused by fluctuations in clean coal ash content,this study adhered to the principles of safety,environmental protection,efficiency,and economy.Through comparative laboratory-scale flotation tests and industrial trials on coal slime at Shaqu Coal Preparation Plant,the physico-chemical properties of the new collector DVS4U058 and frother N88050 were investigated to verify their adapt-ability,separation efficiency,and economic feasibility.The results demonstrated that DVS4U058 and N88050 fully comply with green standards for coal flotation reagents.Their enhanced safety and environmental perform-ance better ensured safe production and improved the operational environment during flotation,while exhibiting higher selectivity.The comprehensive unit consumption of reagents decreased by 28.57%year-on-year,the clean coal yield increased by 2.59 percentage points,the standard deviation of clean coal ash content was only 0.11%,and the tailings ash content increased by 1.98 percentage points.Compared with the existing process,the annual sales revenue could increase by 8.845 6 million yuan,demonstrating significant environmental and eco-nomic benefits.
Keywords：Coal slime flotationflotation reagentslaboratory-scale flotation testclean coal yieldclean coal ash content
Publication Date：2025-08-31
Online Publishing Date：2025-12-29(First online date of this platform, not the publication date of the document)
Pages：7( 67-73 )