July 13, 2016

Designed as primary-stage loading and screening mechanisms, grizzly feeders work in concert with primary crushers to reduce coarse rock into a sorted stream of aggregate matter. In fact, vibrating grizzly feeders for mining operations function at the front line of the mine, like the armoured mouth and teeth of some gargantuan sorting mechanism, one that transforms coarse rock piles into a manageable commodity, but what other features pair with this tank-like profile to tame such raw geological conditions?


Everything else, every other screen and processing station, takes its lead from this essential processing stage. In employing a biological metaphor once more, the grizzly and its accompanying crusher are like a mouth and teeth, so, just like poorly masticated food, a substandard feeder/crusher pairing would cause a nasty choking effect. Unsized and uncrushed rocks would quickly subvert the whole operation. Therefore, vibrating grizzly feeders for mining applications prevent rocky geological forces from thwarting our engineering processes by occupying prime real estate space right at the spearhead of the process.


The telling of the grizzly tale thus far has focused on the material assets and location of this essential mechanism, but it takes more than an armoured hide to create a functional pre-screening tool. The separation of ore and minerals begins right here, down at the toughened bars. The high-tensile steel cross-members are intelligently spaced so that the vibratory component can incite the crushed rocks to fall through the gaps and move forward to the next stage. Rocks that haven’t yet been crushed small enough are recycled and re-crushed until they tilt over the gap and tumble forward into that next screening stage.


The broad strokes of our illustrated guide are being filled in with details. Form still dominates, with high-tensile alloys providing the material backbone, but keen engineering assets come next. A high stroke vibratory mechanism introduces a brute force “shocking” force, which ensures a constant flow rate despite the coarseness of the aggregate. Clogging cannot be afforded in this pure-flow scenario. The wear-resistant and shockproof build is also step-decked to maximise rock distribution and screen optimisation, plus material wastage is avoided by incorporating deep-sided channels.

These are familiar vibratory sorting principles on exhibition here, but the upstream coarseness of this feeding stage represents a far more challenging environment. Fortunately, vibrating grizzly feeders for mining purposes are as functionally adept as they are tough.

Screening Technology Pty Ltd T/AS Hawk Machinery

Address: 7 Lantana St Blackburn North Vic 3130
Contact Person: Bohdan Blaszczyk
Phone: +61 3 9877 7777
Fax: +61 3 9877 8177
Mobile: 0411 099 989


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