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Metso Corporation
Metso Centrifugal Air Classifier for Fly Ash Processing

Metso Centrifugal Air Classifier for Fly Ash Processing

Product catalog summary

Introduction
Metso Minerals Industries, Inc. provides a centrifugal classifier designed for processing fly ash, a byproduct of coal-fired power stations. This document outlines the specifications, benefits, and operational procedures of the Metso centrifugal classifier.

Fly Ash Specifications
Fly ash is categorized into Class C and Class F based on its chemical composition and pozzolanic properties. Class F fly ash, derived from higher-grade coals, is preferred for its superior pozzolanic activity. Key specification requirements include:

Loss on ignition: <3%
Combined content of SiO2, Al2O3, Fe2O3: ≥70%
Moisture: <1% (on-line feed)
SO3: ≤5%

Metso Centrifugal Classifier Features
The Metso centrifugal classifier offers several advantages:

Efficient removal of waste sizes and sharp separation for increased product yield.
No rotating parts, reducing wear and maintenance needs.
Ceramic linings for enhanced wear life.
Adjustable settings for precise separation to meet specific requirements.
Low maintenance with no confined space requirements.

Operational Process
The classifier operates through a series of steps:

Pneumatic transport of feed to the classifier.
Separation of coarse particles by centrifugal force.
Air stream passes through a particle curtain, drawing finer particles to a filter.
Secondary air inlet scrubs remaining particles, recirculating fines back to the primary flow.
Coarse particles exit through an air lock.

Applications and Installations
The Metso centrifugal classifier is used globally, with installations in countries such as Australia, Belgium, China, and the USA. It handles fly ash tonnages ranging from 40 to 100 tons per hour, adaptable to various requirements.

Conclusion
The Metso centrifugal classifier is a robust solution for fly ash processing, offering precise separation, low maintenance, and adaptability to different operational needs.

Catalog excerpts

Metso Centrifugal Air Classifier for Fly Ash Processing-1

Expect results Expect results is our promise to our customers and the essence of our strategy. It is the attitude we share globally. Our business is to deliver results to our customers to help them reach their goals. metso Metso Minerals Industries, Inc., 2715 Pleasant Valley Road, York PA, 17402 USA, tel +1 717 843 8671, fax +1 717 845 5154, www.metso.com Metso centrifugal classifier for fly ash processing metso Expect results

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Metso Centrifugal Air Classifier for Fly Ash Processing-2

Fly ash - waste or opportunity? Coal-fired power stations produce large volumes of waste product in the form of fly ash. When treated, this fly ash can have industrial applications. This is mainly due to its pozzolanic properties that can make it a suitable replacement for ordinary portland cement. Most accurate air classifier solution • Highly efficient removal of waste sizes • More product gained by the sharp separation the centrifugal classifier offers • No drop-off in separation as parts wear • Fine adjustment options allow separations to be tuned exactly to meet specification requirements...

Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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