Low-grade lead-zinc oxidized ore resource utilization method

• Main Authors: YANG DAJIN, DAI LONGGUO, MA YANHONG, YANG WEI, ZHAO HONGMEI, LI YANLIN, PEI QIFEI, JIA ZHUHONG, SUN CHENGYU
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2019
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; FERROUS OR NON-FERROUS ALLOYS; LIME, MAGNESIA; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; REFRACTORIES; SLAG; TREATMENT OF ALLOYS OR NON-FERROUS METALS; TREATMENT OF NATURAL STONE

The invention relates to a low-grade lead-zinc oxidized ore resource utilization method and belongs to the field of lead-zinc oxidized ore resource comprehensive utilization. The method comprises thespecific technological steps of conducting crushing and ball milling on low-grade lead-zinc oxidized ores and then conducting bulk flotation to select lead-zinc concentrates and flotation tailings; conducting magnetic separation on the flotation tailings to enable the iron content of the tailings to be 3%-5% and obtaining iron ore concentrates and magnetic separation tailings; adding a finely ground reducing agent, limestone and shale to the magnetic separation tailings to be subjected to even mixing and pelletizing, and conducting lead-zinc reduction volatilization in a rotary kiln to obtainlead-zinc oxide smoke dust through a dust collection system; and feeding kiln slag into a cement kiln to be subjected to calcinating to obtain cement clinker. Through the low-grade lead-zinc oxidizedore resource utilization me