Laboratory Spiral Concentrator 1. The appliions of laboratory Spiral Concentrator Glass fiber reinforced plastic spiral concentrator is used for the concentration of finegrained metallic minerals such as iron ores, titanic iron ores, chrome iron ores, pyrite, tungstentin ores, niobiumtantalum ores, alluvial gold ores, coastal monazite, rutile, zirconite, and other metallic and ...