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Pit & Quarry

P&Q Staff

Pit & Quarry magazine serves the aggregates mining industry with coverage of the equipment and technology used by producers of crushed stone, sand and gravel. The editorial staff covers the industry from the field, traveling thousands of miles each year to visit quarries, sand and gravel plants, and attend industry trade shows and conferences.

Caterpillar: H75Es and H95Es

Caterpillar is expanding the E Series Hammer line with the addition of the new H75Es and H95Es, designed for backhoe loaders and small excavators. E Series Hammers are wholly designed, engineered and manufactured by Caterpillar. The hammers are fully supported by Cat dealers, so customers can work with a single organization for machine and work tool parts and service. E Series hammers feature automatic shutoff, which instantly stops the hammer when the tool breaks through material. The system increases hammer reliability and durability by eliminating the high internal stresses created by blank firing. Sound suppression is standard, for environmental protection and improved operator comfort. www.Cat.com Photo: Caterpillar Keep Reading

KPI-JCI: 9400P

The KPI-JCI 9400P portable fines recovery plant can help aggregate producers reduce the volume of fine material reporting to their settling ponds without the use of flocculants. Key material processing components of the plant include a rubber-lined slurry pump with variable frequency drive, rubber-lined hydrocyclones, a heavy-duty dewatering screen and a dual inlet slurry sump with bypass capabilities, all on a road-portable chassis. To reach maximum capacity, operators can adjust sump, pump, cyclone and screen sizes and quantities. Additionally, an air suspension axle assembly, hydraulic leveling jacks, hydraulically folding cyclone support system and gas/hydraulic power pack ensure ease of plant setup and teardown, without the use of external equipment. www.KPIJCI.com Keep Reading

Wilden: HX400S

Rather than relying on costly external boosters or amplifiers, one of the liquid chambers on Wilden’s new HX400S high-pressure, air-operated double-diaphragm (AODD) pump is used as an amplification chamber. This allows the pump to generate a 2:1 ratio of discharge fluid pressure to air inlet pressure – resulting in the ability to achieve a discharge fluid pressure of up to 250 psig. Additionally, the HX400S pump, which is available with 1.5-in. inlet and discharge connections, is outfitted with Wilden’s Pro-Flo X Air Distribution System. The Pro-Flo X ADS features a state-of-the-art Efficiency Management System, which allows the operator to dial in the actual operational parameters regardless of the application demands or pump size. www.Wildenpump.com Photo: Wilden Keep Reading

Sandvik: CI511/512 crusher

The second generation of compact horizontal impact crushers from Sandvik provides low capital cost solutions, optimum performance and good cubical shape — all while ensuring low operating cost per ton. The all-new patented and highly modularized Sandvik CI511/512 crusher combines the ability to configure one base crusher into either a primary or a secondary configuration. In addition, the crusher is able to produce products with just two curtains for greater breakage. It’s equipped with an infinite hydraulic curtain adjustment, combined with a brake positioning system — relieving pressure and setting when uncrushable objects enter the crusher. No hydraulic power is required during normal operation, thus saving on operating power and reducing total power consumption. www.construction.Sandvik.com Photo: Sandvik Keep Reading

McLanahan: Dewatering screens

Dewatering screens were introduced in the late 1970s by McLanahan and quickly became the standard in the mining industry. McLanahan dewatering screens feature heavy side plates, stress relieved bridges and cross-beams. The cross-beams are Huck-fastened together (not welded) so that individual components can be replaced. Heavy-duty screen media is utilized for all applications and is manufactured in-house by McLanahan’s Polymers Division. This rugged, easily maintained design, along with the versatility of media combinations, is key to superior long-term performance and flexibility. McLanahan dewatering screens offer multiple advantages for construction and specialty aggregate producers including a drier, drip-free product that other types of equipment cannot provide. www.Mclanahan.com Photo: Mclanahan Keep Reading

Griswold Pump Co.: 811 Series (ANSI) centrifugal pumps

Griswold Pump Co.’s 811 Series American National Standards Institute (ANSI) centrifugal pumps are ideal for tank transfer and truck loading and unloading in low-temperature and low-pressure conditions. They have two times the wear area between the case and impeller when compared to closed-impeller designs, the company says. The 811’s open-impeller design also minimizes concentrated wear by balancing the hydraulic thrust load and reducing stuffing-box pressure. The pumps are available in a full range of sizes with flow rates up to 4,000 gpm, with the ability to operate in temperatures up to 500º F. www.GriswoldPump.com Photo: Griswold Pump Keep Reading

Terex MPS: MVP380X

The new Terex Cedarapids MVP380X cone crusher from Terex MPS boasts numerous features that increase the machine’s productivity and ease of use. Major new enhancements include high-speed clearing of jammed material and quick crusher separation capability for faster manganese changes. The new 300-hp MVP380X incorporates pinned cylinder ends that remove quickly to allow fast cone separation, which results in faster manganese changes. At the press of a button, fully guided, dual-action tramp relief cylinders provide 6-in. lift for easy clearing of jammed feed material. The hydro-pneumatic tramp iron relief system instantly resets the crusher setting after passing uncrushable material without having to activate valves and pumps. Rollercone patented super bearing design provides higher efficiency, making more horsepower available for crushing. www.TerexMPS.com Photo: Terex MPS Keep Reading

Caterpillar: 966K XE wheel loader

Caterpillar's 966K XE wheel loader delivers up to a 25 percent fuel efficiency improvement, the company says. The 966K XE utilizes an integrated, continuously variable transmission system. A hydraulic pump and motor allow for a smooth and continuous gear ratio change between engine speed and machine speed. According to Cat, the variator provides this ratio flexibility while reducing the heat load generated by the drivetrain when the machine is digging, pushing and climbing under heavy load. Power is transmitted through the variator unit, as well as a parallel mechanical gear path. Power through the variator and mechanical paths are combined through a series of planetary gear sets to maximize the transmission efficiency over a range of operating conditions. The unit's engine can deliver 290 hp. www.Cat.com Photo: Caterpillar Keep Reading

IRock: TS-409

The TS-409 open-style feeder track screening plant is one in a line of five IRock models the company has designed for small to midsized producers looking for a more economical, compact plant. The TS-409 can accommodate topsoil, mulch, sand and gravel, asphalt, coal, limestone and demolition debris, and it is powered by a 66.2-hp Deutz engine. The plant is capable of processing materials at a rate of up to 300 tph. It features an open-style hopper feeder with a 5.02-cu.-yd. capacity, and it has a 42-in.-wide belt feeder conveyor. www.IRockcrushers.com Keep Reading

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