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Troughed belt conveyors with horizontal curves were brought to industrial use by BEUMER. Because of their curved routing and minimum curve radii, these systems offer a low-cost alternative to systems, made of straight-line units with transfer points. By transporting material simultaneously in both directions utilizing the top and bottom belt strand, it permits the customer to operate the system in an even more economical way.
With this technology BEUMER has set new milestones.
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Transport devices are intended for continuous transport of overburden, coal or extracted rock in open-pit mine conditions.
The basic transport devices manufactured by UNEX Inc. are conveyors with rubber belts stiffened with textile or steel-cord meshwork. Belt width ranges from 1 200 to 2 250 mm and their max. transport capacity is up to 10 000 m3/h. Depending on the mining technology conveyors can be design in two versions: movable or immovable.
Driving and return stations can move on rails (in axis or fanlike fashion) using rails or caterpillar undercarriages (rigid or load sensitive).
For extreme conditions (contact pressure of lower than 0,07 Mpa) the driving and return station can be design by means of hydraulic walking undercarriages.
Adjusting and adapting every individual conveyor in accordance with customer requirements and technological conditions is a matter of course.
All parameters of transport devices are in-tune with a series of UNEX bucket wheel excavators. Together with additional equipment for loading, directing and deflecting material flow they form complete technological complexes. The conveyors are able to work in fully or semi-automatic mode. Maintenance costs are minimal.
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With its closed design, a tube belt conveyor allows optimum adaptation of the conveying route to topographic conditions. Since the conveyed material is completely enclosed, it can be transported dustfree, and even extremely steep gradients are safely coped with. This technology is based on proven machine components and a special belt design which ensures a safe operation.
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MULTIDOS weighfeeders are complete weighing systems with extensive variants to adapt to different feed rates, bulk solids properties, and application-specific marginal conditions.
- feed rates: up to approx. 1000 t/h
- main fields of use:cement, steel, and minerals industries
- for granular bulk solids (clinker, gypsum, lump coal)
- for powdery and mealy bulk solids (raw meal, fly ash, filter dust)
- for difficult to handle/sticky bulk solids (clay, marl, gypsum from flue gas desulfurization)
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Belt conveyors of the LEGMET are dedicated for underground mining of ores and should be installed in haulage routes incorporating high-capacity conveyors. The LEGMET conveyors can be also used in other industrial sectors whenever haulage equipment with adequate parameters is desired.
Design of the LEGMET conveyors makes it possible to use the equipment for heavy-duty and very specific applications. The conveyors are widely operated in copper ore mines of the KGHM Polska Miedź S.A. (KGHM Polish Copper plc.)
The LEGMET conveyors use belts of 1000 - 1200 mm width. They can be applied to material haulage with rates up to 1000 - 2000 t/h in underground workings with incline angle up to +15° and decline angle to -5°.
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Based on an original idea combining know-how and technical innovation, this handling system makes it possible not only to preserve the environment but also to protect the product conveyed.
The tubular conveyor can be used to convey all types of products in bulk, from the finest to the coarsest, with a tube diameter two and a half times greater than the maximum grain size.
The types of materials which can be conveyed by the tubular conveyor are extremely varied and currently include various sorts of materials of a powdery nature (cements, ash, fly ash, etc.) or otherwise (coal, coke, ore, limestone, gypsum, sludge, fertiliser, sugar, wood chips, etc.).
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Milltronics weighfeeders from Siemens can improve the accuracy of processing, blend consistencies, accountability, and record keeping. All weighfeeders come standard with a belt weigh bridge and speed sensor. An integrator is required to complete the system.
The weighfeeder is used to deliver an accurate mass flow rate of material. In the majority of applications, material is profiled by an adjustable mechanical shear gate, which fixes the correct material bed depth for a given particle size.
The feed rate is then maintained and adjusted by varying the speed of the belt. However, in some cases the belt speed is constant with rate control (if any) done by a pre-feeding device.
The system consists of three components: weight and speed sensing, integration and control, and the mechanical conveying system.
Using the belt load and the belt speed signals, small incremental totals of weight per time are measured by the integrator and then the flow rate is calculated. The measured flowrate is compared against the desired flowrate and the on-board PID controller makes necessary corrections to the belt speed.
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These machines are suitable to dose in continuous powder, granular and fibre materials. They are particularly suitable for fluid materials and can reach feed rates up to several tons per hour.
As belt feeders can be installed directly under a silo or pre-storage hoppers, while as weighing belts can be re-filled in continuous from other extractor machines such as screws, stellar valves other belts. These machines are equipped with a weighing bridge with loading cells and they can be also equipped with different control devices suitable to satisfy the most various dosing and weighing needs, both in continuous and batch.
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Sandvik RBF-series belt feeders can be assembled in various ways to match the application exactly due to their modular structure . Available with ten belt widths from 650-2400 mm and in lengths from 1.5-15 m, they are designed for applications with capacities up to 2600 m3/h. The RBF-series belt feeders suit for materials that have at least moderate internal cutting properties such as coal, lime, Fe-pellets, metal concentrates and different rocky materials.
Sandvik RBF-series belt feeders have wide and adjustable capacity range while they are reliable, silent, steady and have low raise of dust. Due to the adjustable and controllable output the RBF-series belt feeder can be used in applications where accurate feeding is needed.
Sandvik RBF-series belt feeders are easy to assemble, install and operate. With a wide range of standard modules and components they can be tailored exactly to meet the application requirements. At the same time, they are versatile, easy to adapt and easy to service.
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Thermo Electron Corporation's Ramsey weighbelt feeders are designed for demanding industrial applications and provide accurate monitoring and control.
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Its incorporation into PRODECO, a.s. production program enables to deliver to its customers comprehensive technological units for overburden dumping, i.e. excavator - belt conveyer - overburden spreader.
At present orders concerning the supply of belt transportation conveyers with a width of 1 600 and 1 800 mm have become reality. The production range includes belt conveyors with a belt width from 1 200 to 2 250 mm.
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Belt Conveyor Systems continuously transport bulk materials, excavated and crushed rock material in a clean and efficient manner over long distances, through curves and up and down via considerable inclinations. The design parameters strongly determined the climatic conditions and material properties.
Tenova TAKRAF Belt Conveyors can be stationary, shift able, enclosed, running in tunnels over long distances, mounted on sleepers, on rails and onto the tunnel roof. The belt width ranges from 1 m to 3 m, the maximum belt speed today reaches 6,1 m/s in copper mines (even 10 m/s on conveyor bridges).
Besides countless belt conveyors in lignite mines worldwide, in 2000 Tenova TAKRAF built a conveyor system with the world longest 16.8 km single conveyor , thereof 16 km inside of an inclined tunnel. Milestones in the development of conveyor systems are installed downhill overland conveyor of El Abra and the in pit and ex pit conveyors of the Escondida mine in Chile.
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ASGCO's Impact Beds are designed for whatever you throw at them. Our impact beds provide impact protection for the conveyor belt, as well as a tool to help control spillage in the conveyor-loading zone.
Absorbs Impact - with our impact bars that are manufactured with our absorbent, 40-durometer rubber that can really take the shock of large material.
Modular Designed - beds can be manufactured in 2' (600mm), 4' (1200mm) or 5' (1500mm) long, depending upon the size of your material impact area.
Custom Built - beds are designed for your specific application.
Meets CEMA - design standards.
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Dura-Sleeve return idlers are a patented abrasion resistant urethane sleeve that is easily clamped on any existing or new rubber or urethane disc return idler shaft.
* Patented Design - of our idler sleeve clamping system utilizes you to replace worn out rubber or other urethane disc return idlers.
* Abrasion Resistant Urethane - compounds provide wear ability that exceeds 5 times the wear life of standard rubber disc return idlers.
* Meets all CEMA Standards - and available in any belt width and inside and outside roller diameter.
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DRX (Dual Relief Xtra™) Impact beds are designed with one simple goal: protect the belt.
Slide-Out Service™ makes maintenance convenient and safe. DRX Impact beds separate in the middle and the two sides slide apart. A complete bar change out takes just one or two hours.
Velocity Reduction Technology™ is found only in the DRX line! Two levels of reaction force reduction absorb impact energy and minimize transmission back to the belt.
Impact Bar Supports enhance bar function. Made from high-strength steel, our inverted-design Impact Bar Supports allow the impact bars to expand and function properly to absorb more impact energy.
Channel Crossbeams efficiently transfer damaging impact energy to the isolation mounts.
Four Models Available:
DRX200 - for light-duty applications, up to 200 lb-ft
DRX750 - for medium-duty applications, 200-750 lb-ft
DRX1500 - for heavy-duty applications, 750-1500 lb-ft
DRX3000 - for extreme applications, 1500-3000 lb-ft.
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Rugged, reliable, maintenance free
The simple, cost efficient way to reduce belt damage, increase belt life and virtually eliminate maintenance at load points.
Features / Benefits
- Large surface area maximises conveyor belt support.
- Steel-backed rubber impact bars absorb repetitive drop-shocks from heavy free-falling particles.
- Abrasion-resistant UHMW polyethylene surface minimises contact friction.
- Tapered leading edge reduces risk of belt tears or belt clip damage.
- No moving parts
- Removable side-sections simplify maintenance.
- Modular design minimises material build-up.
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A key requirement in the construction of any conveyor transfer point is proper support of the belt. The belt support system must provide a stable, sag-free line that prevents spillage and entrapment damage.
Martin Engineering offers an array of belt support systems to match your application, conveyor specification, and load criteria.
MARTIN® GUARDABELT™ Heavy-Duty Impact Cradle
MARTIN® GUARDABELT™ Heavy-Duty Impact Cradle is engineered to withstand impact forces from 12,000 to 17,000 pounds of force (53.4 to 75.6 kN). This complies with the Heavy-Duty (H) Classification as specified in CEMA Standard 575-2000 Bulk Material Belt Conveyor Impact Bed/Cradle Selection and Dimensions.
Rugged Impact Bars
Bars feature a top layer of slick UHMW molded to a base of impact-absorbing SBR Rubber.
Steel Backbone for Bars
Each impact bar is reinforced with a steel support structure.
Meets CEMA Design Standards
MARTIN® GUARDABELT™ Heavy-Duty Impact Cradle classified as Heavy Duty (H) as specified in CEMA Standard 575-2000.
Engineered To Fit Your Conveyor
MARTIN® GUARDABELT™ Heavy-Duty Impact Cradle fits CEMA E6 or E7 configurations.
Structure Built for Abuse
Sturdy impact cradle is specially designed to withstand the high-impact forces of conveyor loading zone.
Slide-In/Slide-Out Maintenance
Cradle incorporates MARTIN® TRAC-MOUNT™ concept for ease of bar replacement.
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