Durga Metal Profiles, Belgaum manufactures Spiral Classifier with Adjustable Speed. Durga Metal Profiles, Belgaum is an ISO 9001:2000 certified company. Durga Metal Profiles, Belgaum is the supplier of mineral processing machinery. Spiral Classifier with Adjustable Speed has the classifying operation which is carried out in a pool of fluid pulp confined in a tank arranged to allow the coarse solids to settle out, whereupon they are removed by mechanical means. Spiral Classifier with Adjustable Speed is provided with triple start spirals which gives maximum agitation and greater raking capacity. The main advantage of spiral classifier is being slow operating speed giving close separation and high raking.