Spiral Classifier

Production Capacity: 80-11880 t/h Spiral Diameter: 300-3000 mm Motor Power: 1.1-40 KW

Spiral classifiers are mainly divided into four types: high-weir single spiral and double spiral, low-weir single spiral and double spiral, and submerged single spiral and double spiral classifiers. This equipment performs mechanical classification based on the principle that solid particles of different sizes and specific gravities settle at different velocities in a liquid. Applicable materials: iron ore, gold ore, quartz sand, steel slag, ore sand, fine mud, slurry, cement clinker, quartz stone, etc.

PRODUCT INTRODUCTION

Spiral classifiers mainly include four types: high-weir single spiral and double spiral, low-weir single spiral and double spiral, and submerged single spiral and double spiral classifiers. It is a type of equipment used for mechanical classification based on the principle that solid particles of different sizes and specific gravities settle at different rates in liquid. Spiral classifiers are widely used in concentrators to form closed-circuit cycles with ball mills for the distribution and separation of ore sand, or in gravity concentrators to classify ore sand and fine sludge. They are also used for particle size classification of slurry in metal beneficiation processes, as well as for de-sludging and dewatering in ore washing operations. They are one of the primary pieces of equipment in mineral processing.

ADVANTAGE

Advanced Technology and Energy Efficiency:** The equipment utilizes frequency conversion control, offering a high degree of automation and simple, convenient operation. It can be seamlessly connected to grinding mills in closed-circuit grinding processes. Compared to hydrocyclones, it consumes less power.
Wide Range of Applications:** It is widely used in gravity concentrators for classifying ore sand and fine sludge, as well as for particle size classification in slurry processing during metal ore beneficiation. It is also suitable for desliming and dewatering in ore washing operations.
High Classification Fineness with Flexible Adjustment:** The classifier achieves high classification fineness, effectively eliminating oversized particles and sieve residues in the product. It allows easy and flexible control over the quality and fineness of the stone powder.
Wear-Resistant Components and Easy Maintenance:** The lower support of the machine features a live sleeve and nylon bushing structure, ensuring easy maintenance and replacement. The base is constructed with channel steel, and the body is welded from steel plates. The water inlet head and shaft head of the spiral shaft are equipped with cast iron sleeves, providing excellent wear resistance and durability.

WORKING PRINCIPLE

The spiral classifier is a type of classification equipment that operates based on the principle of differing settling velocities of solid particles in liquid due to variations in particle size and specific gravity. Fine ore particles float in the water and overflow, while coarse ore particles settle at the bottom of the tank and are pushed upward by the spiral for discharge. This equipment mechanically classifies the material ground by the mill by filtering the fine particles and returning the coarse material to the mill’s feed inlet via the spiral blades. The filtered fine particles are discharged through the overflow pipe. The base of the machine is made of channel steel, and the body is constructed from welded steel plates. The water inlet head and shaft head of the spiral shaft use cast iron sleeves for wear resistance and durability. The lifting device is available in both electric and manual versions.