A large molybdenum ore beneficiation plant, ore processed belongs veinlets disseminated deposit. Metallic minerals are mainly pyrite, molybdenite, followed by brass ore, magnetite, hematite, and a small amount of bornite, pyrrhotite. Gangue minerals are quartz, biotite, orthoclase, muscovite, followed by chlorite, sericite, calcite, fluorite apatite and a small amount of rutile.
The molybdenum ore is a flaky and scaly aggregate, which is immersed in veins and scatters in the gangue, and a small amount passes through the pyrite. The particle size is uniform. The general lamellae width is 0.27-0.054 mm and the length is 0.12 mm. The ore has a true specific gravity of 2.7, a pseudo specific gravity of 1.68, a Platt hardness of 12-14, an ore containing 0.1% molybdenum, copper 0.028%, and sulfur 2.8%. (II) Construction scale and main technical parameters Treatment of raw ore 5,000 tons / day, 1.65 million tons / year, 3,000 tons of molybdenum concentrate, 45% of molybdenum concentrates, recycling 85%. (3) Determine the equipment selection of the concentrator according to the final process flow and main technical parameters recommended by the ore dressing test. 1, design selection of major equipment Coarse crush: jaw crusher 1500×2100; Medium crush: φ2200 cone crusher (medium); Finely divided: φ2200 cone crusher (short head type); Vibrating screen: 1800×3600 inertial vibrating screen; Grinding: φ3600×4000 wet lattice ball mill ; Re-grinding: φ1500×3000 wet overflow ball mill; Classifier: φ3000×10500 high-grade double-helical classifier; Hydrocyclone: ​​φ250 mm; Rough selection: Rough selection operation φ3000×8000 flotation column; Sweeping operation φ3000×6000 flotation column; Rough selection operation φ1.5×8000 flotation column; sorting 1.1 cubic meters, aerated agitation flotation machine (type A); Featured 0.35 cubic meters, aerated agitation flotation machine (type A); 2, auxiliary equipment Sand pump: 10PS ash pump; Thickener: φ9000 center transmission Filter: 10 square meters external filter cylinder filter; Dryer: φ1400×9000 external heating dryer.Fully refined paraffin refers to a product obtained by using oil-containing wax as the raw material, degreased by sweating or solvent, and then refined by clay or hydrogenation.
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