The Efficiency Change of Spiral Classifier with Different Overflow Discharge Methods

Xing Long Zhou; Xiang Wang; Xiao Ming Zhang; Luo Xiao Qing

doi:10.4028/www.scientific.net/AMR.412.453

Paper Titles

Investigation on ABS Hydrophobic and Oleophobic Processes
p.436

Influencing Factors on the Determination of Corundum Particle Parameters by SEM and Image Analysis
p.441

Observation Technique of Internal Microstructure of Micro-Powder by Electron Microscopy
p.445

In Vivo Stability and Biodistribution of Quantum Dots by Inductively Coupled Plasma-Atomic Emission Spectrometry
p.449

The Efficiency Change of Spiral Classifier with Different Overflow Discharge Methods
p.453

Drying Kinetics of Granules in a Fluidized Bed Dryer
p.459

Drying Model of Paste Materials in Fluidized Bed with Inert Particles and Immersed Heating Tubes
p.463

Influences of Different Calcination Ambiences on Phase Composition, Morphologies of Ceramic Coatings on Ti–6Al–4V Alloy by Micro-Arc Oxidation
p.469

Preparation of Barium Titanate Powders by Gel-Solid Reaction
p.473

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 412The Efficiency Change of Spiral Classifier with...

The Efficiency Change of Spiral Classifier with Different Overflow Discharge Methods

Abstract:

The basic structure, classification principle and low efficiency of the traditional spiral classifier were analyzed. The trial industrial comparative experiment was carried out by using φ300×4500 spiral classifier with the two-sided overflow and the port side overflow at the same parameter. The experimental results showed that, the qualified fine materials could overflow with the shortest distance by using two-sided overflow method, which avoided circulation circuit of fine materials and reduced the content of-200 mesh fine materials in the sinking sand down lower 2-5 percentage points compared with the port side overflow. At the same time, adjusting the overflow emissions height of two-sided overflow could delay the settling time of coarse mineral which reduced the content of +200 mesh materials of the overflow discharge lower 5-8 percentage points than the port side overflow. Compared with the port side overflow, the classification efficiency was improved about from 40% to 60%, and the average increase rate was up to 17%. The improvement of overflow discharge can be used not only for the adjusting of present spiral classifiers but also for making new machines, which is of a significant application prospect.