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Crushing, Screens & Feeders, Mobile Plant, Recycling













Compact crushers, screens impress at live demos

The global Terex company’s involvement in the quarrying application spans more than 80 years. After manufacturing and distributing numerous reputable mobile brands, Terex has developed a portfolio of crushing and screening solutions for smaller aggregate and recycling producers.

This month in Nashville, Tennessee, the US aggregate market will have the opportunity to view live working demonstrations of three recent additions to the Evoquip compact crushing and screening portfolio: the Cobra 230R and Cobra 290 impact crushers and the Colt 1000 scalping screen.

The Cobra 230R is an evolution of the Cobra 230. This closed-circuit version incorporates a 2.4m x 1.2m (8’ x 4’) post-screen that ensures the required product specification is achieved before recirculating or stockpiling oversize material.

The complete after-screen system, including oversize conveyor, can be quickly detached, allowing the machine to be run in standard mode or separate transport.

The Cobra 290 has a throughput potential of 290 tonnes per hour, depending on feed material and apron setting. The unit, which was also showcased at Hillhead UK in June this year, is powered by a 234kW Volvo engine that powers the fuel-efficient, high performance direct drive system.

The tracked unit is capable of crushing on-site within minutes of set-up. It can process reinforced concrete, recycled asphalt, construction and demolition (C&D) materials and virgin rock.

The 290 features a Terex CR055 impact crusher with a rotor size of 1000mm x 1034mm (40” x 41.5”). The tip speed of the rotor can be varied, depending on the crushing application and product requirements.

Throughout the crushing process, the Cobra 290 constantly monitors the engine load and automatically regulates the feed as required.

Like the 230 crusher, the 290 features two independent, hydraulic-controlled aprons that enable the operator to optimise material throughput and detection.

The unit’s patented hydraulic overload protection system not only protects the impact crusher should an uncrushable piece of aggregate enter the chamber, but it also minimises apron bounce and reduces the amount of oversize material passing. A hinged inlet/outlet reduces the risk of material bridging at the feed-in point.

Below the impact crusher, the producer has the option of a full length conveyor design or a vibrating under-pan feeder, which offers belt protection in heavy-duty recycling applications.

ModelLengthWidthHeightDouble-deck screenOutputHopper capacityEngine optionsConveyors
Colt 60011m2.2m2.5m2.3m x 1.1m280 tph3m3Deutz Tier 3 D2011: 36kW@2300 rpm1000mm wide 4-ply plain belt; 650mm wide fines conveyor, with 2.9m discharge; 650mm wide mid-size side conveyor, with 2.8m discharge; 1000mm wide oversize tail conveyor, with 2.7m discharge
Colt 8009.2mm2.5m3.1m2.7m x 1.2m280 tph3m3Deutz Tier 3 D2011: 49kW@2300 rpm;
Cat Tier 4 C3.4: 55kW@2300 rpm
1050mm wide collection conveyor with SCS scraper; 650mm wide fines conveyor option, with 3.8m discharge; 650mm wide mid-grade conveyor option, with 3.6m discharge; 1050mm wide oversize conveyor with 3m discharge
Colt 100011m2.5m3.1m4.1m x 1.2m360 tph5m3Cat Tier 4 C3.4: 55kW@2300 rpm1000mm wide collection conveyor with SCS scraper; 800mm wide fines conveyor, with 3.9m discharge; 650mm wide mid-grade conveyor option, with 3.6m discharge; 1050mm wide oversize conveyor with 3m discharge

Like the 230, there is also the option on the 290 for a single-deck after-screen system. This incorporates a 2.7m x 1.5m (9’ x 5’) screen, which provides the producer with a sized end product.

The after-screen system, including oversize conveyor, can also be quickly detached, enabling the 290 to be run in standard mode or to be transported separately. It is possible for the producer to purchase and retrofit the after-screen system after it begins operating the Cobra 290.

For ease of use and serviceability, the Cobra 290 provides the producer with unimpeded ground level access to the engine, hydraulics and service and refuelling points. The hinged radiator pack, hinged diesel tank and product conveyor can all be easily detached for major maintenance. The operator can activate the machine either manually – with an intuitive, two-button start-up sequence – or remotely pilot the crusher from the excavator cab.

The Colt 1000 scalping screen is designed to operate in heavy-duty and precision screening applications, such as recycled aggregates (pictured).
The Colt 1000 scalping screen is designed to operate in heavy-duty and precision screening applications, such as recycled aggregates (pictured).

Scalping green

The Colt 1000 scalping screen, which also featured at Hillhead, is designed to operate in heavy-duty and precision screening applications, thanks to a variable screening angle and other screen media options. It is the largest mobile screen in its portfolio after the Colt 600 and Colt 800 scalpers, yet maintains a compact footprint.

The 1000’s robust 4m x 1.2m (13’ x 4’) double-deck screen can process up to 360 tph, depending on the application. The four-metre bottom deck ensures optimal classification in fine screening applications.

ModelLengthWidthHeightRotor diameterOutputHopper capacityEngine optionsConveyors
Cobra 2309.3m2.4m2.9m830mm x 860mm250 tph2.6m3John Deere: 194kW@1800 rpm
Volvo T4F: 205kW@1800 rpm
900mm wide belt with 3m discharge height; optional 500mm wide by-pass conveyor with 2.4m discharge height
Cobra 230R13.3m2.5m3m830mm x 860mm250 tph2.6m3John Deere: 194kW@1800 rpm
Volvo Tier 4 Final: 205kW@1800 rpm
2.4m x 1.2m single-deck after-screen; 500mm wide oversize conveyor, with 3.1m discharge height; 1000mm wide fines conveyor with 2.5m discharge height
Cobra 26012m2.5m3.2m830mm x 860mm250 tph2.3m3Caterpillar Tier 3 C7.1:
186kW@1800 rpm
Cat Tier 4 C7.1: 202kW@1800 rpm
900mm wide product conveyor with 3.2m discharge height
Cobra 260R15m3m3.2m830mm x 860mm250 tph2.3m3Cat Tier 3 C7.1:
186kW@1800 rpm
Cat Tier 4 C7.1: 202kW@1800 rpm
900mm wide product conveyor with 3.2m discharge height
Cobra 2909.9m2.5m3.1m1000mm x 1034mm290 tph3.3m3Volvo Tier 3: 235kW@1500-1800 rpm variable
Volvo Tier 4 Final: 235kW@1500-1800 rpm variable
1000mm wide product conveyor option, with 3.4m discharge height; 500mm wide side conveyor option, with 2.3m discharge height; 500mm wide by-pass conveyor option, with 2.4m discharge height
Cobra 290R14.76m2.9m3.1m1000mm x 1034mm290 tph3.3m3Volvo Tier 3: 235kW@1500-1800 rpm variable
Volvo Tier 4 Final: 235kW@1500-1800 rpm variable
2.7m x 1.5m single-deck after-screen; 500mm wide variable speed conveyor, with 3.1m discharge height; 1200mm wide belt fines conveyor with 3m discharge height

The Colt 1000’s conveyor discharge heights can also generate stockpiles as tall as three to four metres. The feeder system is equipped with folding hopper extensions, including a 1000mm (40”) wide collection conveyor with SCS scraper, an 800mm (31”) wide fines conveyor with 3.9m discharge, a 650mm (26”) wide mid-grade conveyor with 3.6m discharge, and a 1050mm (41”) wide oversize conveyor with 3m discharge. The 1000mm wide collection conveyor complements the screen width to ensure maximum screen area is managed from the feed point.

In a standard configuration, the Colt 1000 discharges the fines product to the right side of the plant, with the mid-grade to the left. There is the option to place both conveyors on the same side of the unit once the Colt 1000 is in the field. A two-way split conversion can also be undertaken, relocating the tail conveyor to collect both top and bottom deck pieces.

The Cobra 230 is fed by a Telestack TC 424 X mobile conveyor.
The Cobra 230 is fed by a Telestack TC 424 X mobile conveyor.

Telematics system

All the Evoquip models can be fitted with the T-Link telemetry system, which was introduced on the Terex Finlay range of mobile plant in 2016.

T-Link enables owners to remotely manage, stay connected to and keep track of their equipment. They can also use the program to monitor work progress, manage logistics, access critical machine information, analyse and optimise machine performance, and perform remote operator support.

Data collected via the system can be accessed securely through an online portal that has accessibility 24 hours per day, seven days per week, 365 days per year.

Owners are issued with a log-in and password that gives them immediate access to their machine data from any internet-enabled computer or mobile device.

The Evoquip compact crushing and screening portfolio is distributed in Australia by Tricon Equipment (New South Wales, Queensland, Victoria, Tasmania) and OPS Screening & Crushing Equipment (Western Australia, Northern Territory).

Source: Terex Evoquip

Cobra 230 delivers the goods in northern NSW

A major northern New South Wales quarry business has acquired and successfully implemented an Evoquip Cobra 230 tracked impact crusher.

The producer (which preferred not to be named for the purposes of this article) was making changes to its concrete plant, where it was essential that material coming through be at a particular specification to meet production requirements.

The Cobra 230 tracked impact crusher at work in a northern NSW quarry.
The Cobra 230 tracked impact crusher at work in a northern NSW quarry.

The Cobra 230 (which has been supplied by Tricon Equipment) aided in these requirements, as the machine can produce a consistent rock shape.

It was also important for the producer to acquire more fines and dust for the concrete plant, which the Cobra 230 could also generate.

The producer initially inquired about a machine that could crush rock in the pit, and although this is still the long-term intention, it is currently being used in-line to crush quartz.

A fixed jaw feeds the material onto a Telestack TC 424 X mobile conveyor (which is also supplied by Tricon Equipment), before being fed into the Evoquip Cobra 230 at 200 tph, then being fed into a fixed crush plant.

The producer’s change of tactic demonstrates how flexible it can be having this mobile crusher on-site, combined with its ability to work with other mobile equipment and fixed plant. The Cobra 230 was able to keep up with the fixed plant’s production requirements at 200 tph, thereby matching the fixed plant’s output and resulting in no downtime.

Once it is ready to be used in the pit, the Cobra 230 can be manoeuvred with ease, as is the case once it is in the pit and at work. The 230 is one of the few crushers on the market that can move around while in operation.

The fact it can be used almost anywhere as a primary crusher, being fed straight away from the source, or a secondary unit, further demonstrates its value and effectiveness.

The producer has been impressed with the Cobra 230’s performance.

It had questioned the 230’s compact size before purchase, but has been pleasantly surprised at how easily the mobile unit handles the workload.

Some work spaces within the quarry come at a premium, so the compact size has come in handy.

The Cobra 230 has many positive features that will benefit the producer once the machine is in the pit. These include T-Link telematics, which make it much easier to track its progress while crushing, the machine’s accessibility, and its ability to be easily maintained.

Source: Tricon Equipment

 



















Tuesday, 22 January, 2019 01:22pm
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