The Kani Karan Asia Spiral Classifier is designed to operate continuously for washing, classification, desliming, or dewatering of industrial materials as well as metallic minerals. This unit is built in three different sizes to fit the variety of problems encountered in continuous test work. The wide adjust¬able overflow weir with straight line surface flow provides efficient classi¬fication of coarse and fine material. An outstanding mechanical advan¬tage, especially for intermittent operation, is provided by having the lower bearing entirely above the pool. No contamination of pulp is caused by surplus of forced lubrication required in other classifiers. Adjustable cast iron flights are easily replaced. Steel tanks include supporting legs to form a complete unit. Completely covered units available.