Storage and homogenization of various bulk materials is a significant part of the handling processes within the overall logistic networks of the bulk material processing industry.
Dynamic and efficient handling requires the stockyards to be equipped with appropriate technology (e.g., stackers, reclaimers, conveyor systems, etc.).
Our product line of stockyard technology encompasses conveying systems, stackers and scrapers of various types, as well as bucket wheel machines.
FAM stacking machines are primarily used to fill bulk materials into stockpiles or to create various types of blending beds serving for homogenization of materials with different properties.
In longitudinal stockyards the most common are rail-mounted mobile stackers. The discharge booms of these stackers are often slewable and/or can be raised and lowered.
In circular stockyards (or circular blending beds), the stacker is positioned in the center so that it can pivot. The material is fed from the conveyor bridge located above the stockyard directly in the stacker´s axis of rotation.
In the FAM designed semi-portal scrapers, the portal spans a stockpile that has a lateral or peripheral retaining wall.
One rail track is located at the foot of the stockpile and the opposite track supporting the portal end is located in a raised position on the retaining wall of the stockpile.
Semi-portal scrapers are also employed in circular stockyards. In this design, the portal is supported on one side by a ball-bearing slewing ring at the center column and on the other side by an undercarriage on a ring rail.
The portal of an FAM portal scraper fully spans the stockpile. It rests on two opposite undercarriages, allowing stockpiles of up to 75 m wide to be spanned.
The scraper boom is moved by a hoist. The bulk material is transferred to the discharge conveyor via a transfer trough (located outside the portal) or a feed table (inside the portal).
When used in outdoor stockyards, portal scrapers often have one or two main booms arranged in parallel. In their raised position, the booms extend beyond the contour of the portal.
FAM side scrapers consist of a scraper boom that can be raised and lowered, a counterweighted base frame, and a rail-mounted undercarriage. The scraper boom is articulately joint to a base frame and is held, lifted or lowered by a rope winch.
The position and angle of the scraper boom to the stockpile is regulated by a winch using ropes pulled through sheaves mounted on a pylon. The rail-mounted undercarriage is located only on one side of the stockpile. The stability of the device against tipping is guaranteed by an appropriately dimensioned counterweight.
The recovered bulk material is transferred onto a belt conveyor running parallel to the stockpile.
The design of FAM slewing scrapers resembles the design of side scrapers. However, the scraper boom is connected with the slewing gear platform in an articulated manner. They are employed primarily in circular stockyards.
When used in longitudinal stockyards, slewing scrapers are additionally equipped with a rail-borne or crawler-mounted undercarriage. Slewing scrapers allow material to discharge not only by means of tunnel belt conveyors, but also via gallery conveyor belts running along the storage structure.
FAM bridge-type reclaimers are exclusively employed in face reclamation.
For face reclamation, mainly bridge-type machines with scraper chains or bucket wheels as reclaiming elements are used.
The supporting structure is formed by a bridge girder under which the scraper chain or bucket wheel is installed. Harrow-type carriages with harrow arms are mounted on the bridge structure, on either one or both sides. Their shape is adapted to the cross-section of the stockpile.
FAM bucket wheel reclaimers equipped with bucket wheel booms are used in stockyards dealing with large masses of poorly flowing or extremely heavy bulk materials.
Our bucket wheel reclaimers primarily consist of a slewable superstructure and a rail-mounted base. Both the bucket wheel boom and the counterweight boom are hinge-mounted on the superstructure and guyed with ropes or tiebacks via a pylon.
The bucket wheel boom is raised and lowered by means of rope winches or hydraulic cylinders.
When stockpiling operations require stacking and reclaiming to be performed at the same time, separate machines are absolutely necessary but in most cases simultaneous stacking and reclaiming do not need to be performed.
This is when our stacker-reclaimers, or also called combined machines, become an excellent solution because their functional principle combines both types of operation.
Similar to a regular stacker, the stacker-reclaimer is fed via an upstream tripper car. The bucket wheel remains in its rest position while the stockpile is being filled.
In “endless” circular stockyards, the material is stored in a circle, or also referred to as a ring stockpile, by a spreader that can be swiveled around a central column.
A reclaimer, which can also be rotated around the center axis of the building, moves the material to a bottom hopper located underneath the center column where the material is received by a tunnel conveyor and transported further under the circular building.
Due to their compact design, FAM circular stacker-reclaimers are well suited for the roofed storage of bulk materials. In contrast to longitudinal stockyards, the continuous process of simultaneous loading and unloading of a single circular building is possible without restrictions.
The FAM Group has gained extensive experience in designing customized solutions which enables us to fulfill our customer orders with high precision and top quality.
Please feel free to contact us, we have the solution you are looking for!
Over the years we have gained extensive knowledge and experience, which we are happy to share with our customers in the form of consultations and training.
Our advisory services aim to enhance the availability and efficiency of the systems in close cooperation with our customers. This includes, for example, holistic optimization of machines and plants which helps reduce energy, spare parts, operating and human resource costs.
As a result, our customers benefit from suggestions for improvement and recommendations for the plant management, as well as from feasibility studies for upgrades and modernizations.