HCS | Center Sizer

Secondary Sizer HCS 

Housing

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. 

• Solid front wall to absorb the main crushing forces coming from crushing rolls 
• Solid and rugged welded steel construction for the side walls including wear plate and adjustable and exchangeable scrapers 
• Internal wall with wear plates and protection for bearings 

Crushing Segments

The crushing segments are made of wear resistance steel 
and are replaceable with the rolls in situ! 

Changing Segments:

• Remove the screws 
• Push segment to the side 
• Lift up segment 

Segment Options

Design

The HCS center sizer is designed and engineered for reliability, excellent performance in adverse raw material conditions, low power consumption, low maintenance, and reduced operating costs. The design and operational features of the HCS center sizer truly remain second to none. The success of the HAZEMAG HCS center sizer is realized in its ability to process a range of raw materials, for example: 

General Operation & Breaking Action 

The crushing rolls consist of rolls with crushing rings which are fitted with exchangeable crushing caps. The two crushing rolls turn towards each other, and as a result, the roll body and crushing segments subject the material to multiple stress points. These rollers are designed to stand up to the high crushing forces and maintain consistent crushing. 

Three-stage Breaking Action

Initially, the material is gripped by the leading faces of opposed roll teeth. These subject the rock to multiple point loading, inducing stress into the material to exploit any natural weaknesses. 

Housing System / Main Frame

The HCS center sizer housing and its drive support platform are designed and fabricated as a heavy-duty, very rugged system that has proven to be suitable for the most difficult applications. For protection, the housing system is fitted with wear resistant, exchangeable liners. Some notable features of the HCS housing are: 

• Solid, extra heavy-duty housing front wall that will absorb the stress and forces that are generated during the crushing process. 
• A very heavy-duty, welded steel side wall construction that is fitted with wear liners and exchangeable scrapers that help to serve the purpose of keeping the rotor free from blockage and buildup (mostly associated with clays). 
• Front and rear wall protection; liners that serve to protect the bearings and adjustment of the breaker bar at the discharge side of the sizer.

MASSIVE CRUSHING ROLLS

Crushing Rolls: The heart and most severely tested part of the HCS center sizer is its massive crushing rolls. Its crushing teeth are arranged or positioned in a helical pattern, ensuring the proper gripping of large feed materials. Due to its heavy construction and massive design, the HCS center sizer operates in a smooth, uninterrupted manner. 

Shaft: The crushing roll shaft is produced from tempered steel and is quenched. It is designed as a form-fit system where the crushing ring and shaft are hexagonal for optimum strength and torque. 

ROLL LOCKING DEVICE

With safety in mind, the crushing rolls can be locked or secured into position for safe inspections or maintenance. This roll locking device is integrated into the crusher interlocking system. 

CAP SYSTEM

• Crushing teeth cap mounted on crushing ring 
  with patent-registered form-fit-system 
  by HAZEMAG 
• Crushing ring with three or four teeth 
• Crushing ring material out of high tensile strength 
  quenched and tempered steel, under ambient 
  temperature weldable 
• Wedge principle for connection 
• Easy maintenance 

REPLACEABLE WEAR CAP

BREAKER BAR

Adjustable & Fitted with Replaceable Wear Caps

The adjustable breaking bar facilitates and helps to control the product size leaving the HCS Center Sizer. Its design is one that can be adjusted, lowered to reduce the crushing effect or raised to increase the crushing effect. In addition, further crushing or product size control is realized by the intersection or path-way of the crushing roll teeth related to the breaker bar caps. The crushing roll teeth are positioned so that they pass through or between the breaker bar teeth. The result is a higher level of control, ensuring that oversize lumps are further reduced as the teeth and caps intersect each other. The final result is a cubical product with minimal fines. 

Drive System

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.

THE TRACK LIFTING SYSTEM

The HAZEMAG HCS center sizer is designed with a track roll lifting device. This system facilitates the movement of the sizer from its working position to its maintenance or inspection position.

In this view, the sizer is positioned in its working position, under the hopper feed hood. Prior to the transport or movement of the sizer, all fasteners will be removed from both hood and the sizer base frame. Additionally, the crushing rolls will be secured or locked into position via the crushing roll locking device. 

With the sizer now free from all securing fasteners, the sizer can be lifted or raised hydraulically into its mobile position. 

Facilitated by a winch device, the sizer is pulled out from under the hopper to its inspection or maintenance position. 

Now in its inspection or maintenance position, the sizer is lower and re-secured for safety. On an as needed basis, inspections or the exchange of any wear parts can now be performed. 

Application

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.

• For the processing of soft to medium-hard raw materials
• Excellent solution when the raw material contains cohesive materials (clay) with a high moisture content
• Reduction of the feed material is generally achieved by a combination of compression and shearing, induced by two inward rotating crushing rolls operating at low speeds
• High capacity in a relatively small machine
• Easy installation due to minimal height