Abstract:Rubidium is the main rare metal in an alkaline feldspar granite rubidium deposit in Hebei Province, accompanied by lithium, cesium, niobium and tantalum. Rubidium and cesium occur in the form of isomorphism in potassium feldspar and zinnwaldite, and lithium mainly exists in the form of zinnwaldite. Nb-Ta mainly exists in columbite-tantalite ore as an independent mineral. The combined mineral processing process of " low intensity magnetic - high intensity magnetic -flotation mica-feldspar quartz separation" was adopted. Columbite-tantalite concentrate was obtained with the Nb2O5 grade of 3241 g·t-1 and recovery of 54.32%, Ta2O5 grade of 1091 g·t-1and recovery of 45.45%. Mica concentrate was obtained with the Rb2O grade of 11941g·t-1 and recovery of 28.51%, Li2O grade of 25220 g·t-1 and recovery of 75.89%, Cs2O grade of 2265 g·t-1 and recovery of 54.77%. Feldspar concentrate was obtained with the Rb2O grade of 2276 g·t-1 and recovery of 54.58%. Quartz concentrate with SiO2 grade over 98% was obtained. Rare metal ores such as rubidium are recovered ,at the same time, mica, feldspar and quartz have also been sorted, recovered and comprehensively utilized.