A crushing feeder grizzly is a heavy-duty equipment component used in mining, quarrying, and aggregate processing to regulate the feed of material into a crusher while removing fines and undersized material. It improves crusher efficiency by preventing blockages and reducing wear.
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Key Features of a Grizzly Feeder:
1. Grizzly Bars – Parallel steel bars or grids that allow smaller material to pass through while larger rocks are directed to the crusher.
2. Vibrating Mechanism – Ensures consistent material flow and prevents clogging.
3. Heavy-Duty Construction – Made from high-strength steel to withstand impact from large rocks.
4. Adjustable Spacing – Grizzly bar gaps can be customized based on the required feed size.
5. Scalping Function – Separates oversized material before it reaches the crusher.
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Applications:
– Primary crushing stations (jaw or impact crushers)
– Aggregate processing plants
– Mining operations (ore handling)
– Recycling facilities (scrap metal, concrete)
Advantages:
– Protects crushers from oversized material
– Reduces downtime by preventing jams
– Improves overall crushing efficiency
– Extends crusher lifespan by reducing wear
Types of Grizzly Feeders:
1. Static Grizzly – Fixed bars, no vibration; used for pre-screening.
2. Vibrating Grizzly Feeder (VGF) – Motor-driven vibration for continuous feeding.
3. Chain & Apron Feeder with Grizzly Section – Used for heavy-duty applications.
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