Study and application of flotation equipment renovation scheme in Huoerxinhe coal preparation plant
GUO Lijie
Abstract：In order to tackles the problems of low and inconsistent ash content in flotation tailings and high con-sumption of flotation reagents,based on the study and implementation of relevant national energy policies and environmental protection requirements,Huoerxinhe coal preparation plant analyzes the current status of domest-ic and international coal slime flotation technology and working principle of mechanical agitation flotation ma-chine,at the same time,by comparing and analyzing the adaptability of mechanical agitation flotation machines and microbubble flotation columns to changes in feed properties,and combining with the coal quality character-istics and production reality of the plant,a technical renovation plan is proposed to replace the original three FC-SMC5 500 mm×7 000 mm microbubble flotation columns with two XJM-S36 mechanical agitation flotation machines,the production effects before and after the replacement of the equipment are also compared and ana-lyzed.The results show that the XJM-S36 mechanical agitation flotation machine has stronger adaptability to the changes in the properties of coal slime in the coal preparation plant,after replacement,the ash content of flota-tion tailings is stabilized at 72%～73%from the previous 40%～52%,with a significant increase in tailings ash content and a significant enhancement in stability;the consumption of flotation agents is decreased from 1.52 kg/t before the transformation to 1.26 kg/t,and with a significant reduction in reagent consumption.
Keywords：coal slime flotationmechanical agitation flotation machinemicro-bubble flotation columnflota-tion performancereagent consumption.
Publication Date：2025-04-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 65-71 )