Penncrusher - Typical Posimetric feeder applications such as coal feeders and raw mill feeding

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Typical Feeder Applications

Materials Handled and Capacity Range

coal feeder application This feeder readily handles materials having an extraordinary range of characteristics regardless of whether wet, dry, lumpy, sticky, abrasive or granular. Virtually immune to jams, it will, for example, feed dry, light particles at 1,200 pounds per hour or heavy, sticky minerals at 1,800 tons per hour with absolute consistency. Its reliability is so great that it eliminates any need for an operator standing by to clear pluggage. Additionally, the feeder does not agitate nor degrade the material in any way.

Materials Fed

The Pennsylvania Crusher Posimetric Feeder can feed a wide range of bulk materials including coal, limestone, culm, dry chemicals, biomass, crushed stone, shale, sand, roofing granules, wood chips, cereal and grain.

Coal Feeders for Power Plants:
Documented Gains in Boiler Performance

At a coal fired US power plant - using an extremely difficult-to-handle-fuel - many benefits were recognized following the retrofit with Posimetric feeders. These include:

Improved boiler availability and efficiency
Reduced wear and maintenance
Reduced excess oxygen
Reduced unburned carbon (LOI)

Feeders for Cement Production:
Improved Productivity and Less Down Time with Posimetric Feeding of Coal Pulverizers and Raw Mill Feeding

In a Utah cement plant:

A Posimetric Feeder with a single-duct spool and a separate livewall hopper to replace a rotary system feeding and sealing the coal pulverizer
A Posimetric Feeder replaces a triple-gate valve used to seal the 250-tph raw mill

"Ash Grove Cement’s Leamington, Utah plant chose to confront a problem that has long posed a challenge in cement production: material handling. Although improvements in storage bunker designs and conveyance systems have helped to alleviate many problems, the traditional feeding devices used for the delivery of coal to pulverizers and of raw product to mills are universally prone to plugging and damage. As a result, they represent a high-maintenance item that can limit production runs and kiln availability.

"Ash Grove’s Leamington Plant Engineer Alan Finch sought to improve the reliability of feed systems at that 840,000-tpy facility. After evaluating alternative equipment designs, he contacted Pennsylvania Crusher, the manufacturer of a device called the Posimetric Feeder. Although this equipment had established a 10-year track record within the power generation industry, it was virtually unknown among cement producers. Seeing that the Posimetric concept offered advantages over other designs, Finch and his colleagues investigated the feasibility of retrofits of the plant’s coal feeders and raw material feeders with the Posimetric Feeder." -- Read the full story as published in Cement Americas (PDF)

Visit these other K-Tron Websites
K-Tron International | Jeffrey | Gundlach | K-Tron Feeders | Premier Pneumatics

Pennsylvania Crusher Corporation
P.O. Box 100, Broomall, PA 19008 USA
Phone +1.610.544.7200 Fax +1.610.543.0190