For the industrial beneficiation of primary and secondary raw materials, crushing procedures for the production of certain grain sizes, forms, surfaces or for the outcrop of multi-component materials play a central role.
The utilised crusher must meet stringent requirements of today's time when processing rocks, ores and coals. Materials to be crushed become more and more difficult in terms of handling, high throughput capacities are required and the energy input is a key focus.
Furthermore, crushing plants have changed to compact solutions due to investment cost. Consequently, crushers with low space requirements are having advantages, even for fully-mobile systems. Therefore the application of energy-efficient roll sizers with high throughput rates becomes more and more important from the economic and ecologic point of view.
The HAZEMAG Sizer meets these requirements and is characterized by the following points:
The operating principle is based on a continuous generation of pressure between two counter-rotating rolls, so that crushing takes place without interruptions in contrast to the intermittent jaw crushers. Due to the small number of high teeth big lumps can immerse deep between the rolls and are crushed immediately. The force acting on material is punctual and even not plane as it is typical for jaw crushers. The result is a minimization of fine generation.
The direct drive consists of electric motor, fluid coupling and gear. The fluid coupling provides excellent protection against blows and impacts in heavy-duty use and therefore serves as overload protection. If a non-breakable tramp metal enters the machine, the fluid coupling will disconnect the drive from the crushing rolls.
Housing and drive bracket of the HAZEMAG Sizer are very sturdy and thus suitable for heavy-duty applications. They are fitted with easy to exchange wear parts. The modular design of the housing-system allows matching specific customer requirements. For example, a track lifting device for moving the crusher from the working position into maintenance position is available.
The crushing rolls for primary and secondary crushers consist of rolls with crushing rings which are fitted with exchangeable crushing caps. The crushing rolls for secondary and tertiary crushers are respectively made up of shafts being equipped with exchangeable crushing segments. As a result of the specific geometry between roll body and crushing segments an optimum tight fit is achieved, thus being able to stand up to the high crushing forces. Depending on the respective task definition, the shape of teeth and their number are selected.
Further features of the HAZEMAG Sizer series:
The following typical raw materials are processed with the HAZEMAG Sizer: Limestone, clay, gypsum, coal, coke, phosphate, marl, chalk, salts, quarry material, quicklime …