Home > Encyclopedia

Grizzly screen

Grizzly screen

The name grizzly screen is often given to a screen surface for separating particles at a very coarse size e.g. >25mm and often 200 to 250mm. As a consequence, the screen surface must be extremely robust and often comprises a series of parallel or slightly divergent alloy steel bars or rails. Indeed, simple fixed or static grizzles may be constructed from rail section or I-section girders. If fixed, the grizzly screen surface must be steeply inclined (40-60 ~ ) to promote material flow. It may also be incorporated in a vibrating frame at a lesser inclination to act as both a sizing device and a regulated feeder device. 'Live' grizzly screens are also constructed using a series of rotating cylindrical or elliptical rolls and travelling link assemblies. These devices are less prone to blockage, provide a very positive control upon feed rate to the crusher and can be mounted horizontally to save headroom. The aperture of the grizzly may also be varied if desired. Common applications are described  below.

(1) To prevent occasional oversize particles from entering a primary crusher or a materials transport system such as a field conveyor. The oversize may be broken separately by drop-ball machine, hydraulic  hammer etc or simply rejected to waste.

(2) To remove undersize material from the feed to primary crusher either to by-pass this stage of comminution or to form a distinct quarry product often known as 'scalpings'. This product may be sold or  processed separately

>>Previous: Trommel Screen

>>Next: Scalping and Sizing of the Aggregate in Quarry

Get Support & Quotation

Please fill in the form below(* are required), and we will get in touch with you as soon as possible.

Concrete Plant Concrete Mixer Crusher Other


  • Andesite Manufactured Sand Production LineAndesite Manufactured Sand Production Line

    The Andesite Manufactured Sand Production Line designed by Camelway Machinery has the advantages of reasonable configuration, high automation degree, low operation cost, high crushing ratio, low energy consumption, high productivity and simple maintenance...

  • Mason Sand Making Solution, Plaster Sand Making Plant, Sand Crushing PlantMason Sand Making Solution

    Mason Sand is also called as Plaster Sand, one type of important building material in construction industry. Mason sand has a maximum particle size of 9.5 mm, a...

  • Nuclear Power Concrete Production LineNuclear Power Concrete Production Line

    Nuclear power project is less than hydropower project in concrete pouring volume, but compared with other projects, it still needs a large volume of concrete and its structure is more complex than hydropower project....

  • Building Aggregates Manufacturing SolutionBuilding Aggregates Manufacturing Solution

    Camelway Machinery specilizes in providing professional building aggregates solution and can offer various crusher and sand maker to meet your practical demand for differen kinds of aggregate....

  • Diabase Crushing, Screening and Sand Making Production LineDiabase Crushing, Screening and Sand Making Production Line

    Diabase is a superior building material that can be used as asphalt concrete crushed stones for super highway pavement. The production mainly consists of jaw cr...

Contact Us

Tel: 008637165861518

Fax: 008637165861528


Mobile: 008618838109566

WhatsApp: 008618838109566

Skype: Camelway1983