A Method for Stage Grinding of Steel Slag-Industrial By-Product Gypsum Composite Powder

摘要

#$%^&*AU2020101464A420201001.pdf#####Abstract The present invention discloses a method for stage grinding of steel slag-industrial by-product gypsum composite powder, which is operated as following steps: remove iron in advance to remove large-particle metallic iron from steel slag block, so as to prevent large-particle iron from entering crusher and thus affecting crushing efficiency; combine two stages of crushing with separation and iron removal, so as to prevent a large number of iron from entering into tube mill and thus increasing the circulating load of tube mill due to the poor grinding property of metallic iron; mix the industrial by-product gypsum with steel slag and grind in the secondary grinding, so as to avoid the situation of easy adhesion to equipment, easy over-grinding and easy agglomeration when separately grinding the industrial by-product gypsum and to obtain steel slag-industrial by-product gypsum composite powder with low iron content, high specific surface area and low moisture content through effective mixture of materials, which promotes the synergistic utilization of steel slag and industrial by-product gypsum as industrial solid waste.Drawing of Description SuqmdeLddze p ~ tm- u slag podu&t y- Rollerl press ! DvwHot-blas stov gh eicie Crde steel Dysimic V-typw pwder %bconcentrator concentrator loop iro Plt udie ps telslag-deslfize tube PlateM ..idized ........... gypsum compote ilae Figure 1