Fote Heavy Machinery
Fote is a leader in high-end mining machinery in Asia
emailsales@sinofote.com
News & Events
Home > News > News Detail

The Classification of Spiral Screw Classifier

12/11/2014 8:27:30 AM12/11/2014 8:27:30 AM

Spiral screw classifier is widely used in mineral processing plants, gravity concentrator, metals beneficiation process, etc. because of its simple structure, reliable work, convenient operation, and so on. Spiral screw classifier has many types, for example, high weir single spiral screw classifier and double spiral screw classifier, low weir single spiral screw classifier and double spiral screw classifier, and submerged single spiral screw classifier and double spiral screw classifier. Low Weir type spiral screw classifier now is rarely used. The mainly used spiral screw classifiers are high weir type and submerged type.

Low weir spiral screw classifier

Its overflow weir is lower than the helical axis of the screw. In the actual application, low weir spiral screw classifier is only used for washing sand that has less mud and removing water for big size materials because of its settlement area. It is seldom used in grinding cycle.

High weir spiral screw classifier

Its overflow weir is higher than the helical axis of the screw but lower than the upper border of the screw. The depression area of this type spiral screw classifier is bigger than the low weir spiral screw classifier’s. And the height of the weir can be adjusted within a certain range. It means that its depression area can be adjusted within a certain range, so that users can adjust the grading granularity. Low weir spiral screw classifier is a commonly used device in grinding cycle.

Submerged spiral screw classifier

Submerged spiral screw classifier has 4~5-spiral leaves at the overflow weir end which are all sunk in the pulp. The depression area of this type spiral screw classifier is large. The classification pool is deep, so the stirring of spiral has little influence to the surface area of pulp. The grading surface is smooth, and overflow is big and thin. It is often used as the grinding classification equipment for fine grinder or two-stage grinder.

Request a Quote

You can also send a message to us by this email sales@sinofote.com, we will reply to you within 24 hours. Now tell us your needs, there will be more favorable prices!

Product Name*
Your Name:
E-mail*
Phone:
Message:

Copyright © 2017 Fote Heavy Machinery. All rights reserved. Site Map