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CRUSHING OVERSIZE IS AN EASY TASK FOR AGGREGATE PRODUCER USING BREAKER TECHNOLOGY'S ROCKBREAKER SYSTEM
At its Dillsboro Quarry in western North Carolina, Harrison Construction mines and crushes granite aggregate for roadways, asphalt, concrete, erosion-control projects and building sites. The transformation process begins as material passes through a jaw crusher before being separated along a belt system. Frequently, oversize boulders, which are too large to pass directly through the jaw, are broken proactively with a BTI MRH20 boom system, pared with a BX40 hydraulic rockbreaker.
“We use the BX40 rockbreaker for secondary breakage at our jaw,” explained Quarry Superintendent Jeff Mathis. “We can catch and break any oversize boulders before they go into the jaw. The BX40 decreases the need for jaw repairs and that improves our uptime and profitability.”
The rockbreaker is attached to a permanently installed MRH20 rockbreaker boom system that provides 20 feet of reach to help Harrison Construction scrape and push approximately 400,000 tons of material through the breaker and jaw each year. The system delivers 4,000 foot-pounds of impact energy and is run by an operator stationed in an enclosed booth onsite. The firm installed the upgraded rockbreaking system in 2018 and realized immediate benefits.
“The BTI rockbreaker works twice as fast as our old machine,” noted Mathis. “It takes less than a minute to split a boulder and send it through the jaw. It’s very reliable maintenance-wise as well. We sit back and let it work.”
Site Foreman Kevin Rathbone added, “The BTI breaker works more efficiently and requires less attention, allowing me to focus on other areas of my job. Our operator doesn’t need to hammer one boulder for 30 minutes, either. The joystick controls make it easy to maneuver and push material through the jaw.”
Easily accessible service points for the machine have also been a significant upgrade for Harrison Construction.
“The centralized greasing system is one of the most important features,” stated Rathbone. “The machine has several points that move frequently and having easy access to those locations makes servicing the machine more efficient. It’s well-designed and, in general, the system has required minimal service.”
The MRH20 boom system and BX40 hydraulic rockbreaker provide a complete package to help Harrison Construction stay productive even when the machine isn’t breaking rocks.
“Sometimes, smaller rocks don’t fall into the jaw correctly,” said Mathis. “The hammer can adjust and rearrange those rocks. It’s absolutely instrumental to everything we do.”
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|Kevin Rathbone |