Laboratory Spiral Concentrator 1. The applications of laboratory Spiral Concentrator Glass fiber reinforced plastic spiral concentrator is used for the concentration of fine-grained metallic minerals such as iron ores, titanic iron ores, chrome iron ores, pyrite, tungsten-tin ores, niobium-tantalum ores, alluvial gold ores, coastal monazite, rutile, zirconite, and other metallic and ...