Rock Products

SEP 2017

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22 • ROCK products • September 2017 our concrete contractors in, we had all that engineering done ahead of time and pieces started going up in November." E q u i p m e n t I n s t a l l a t i o n Underway One of the biggest challenges of the proj- ect was beating the cold winter weather. Rivisto commented that five months during a Minnesota winter can quickly become three or four months of avail- able working days. "The contractors and the fabrication delivery, that's manage- able, but weather is weather and you have to deal with it up here in Minne- sota," he said. Thankfully, a long fall season allowed the project to move ahead of schedule before winter hit. Superior installed 20 new conveyors into Kraemer's plant, integrating them with crushing, screening and washing equipment from other vendors. Back in 1997, Kraemer purchased the first-ever Telestacker Conveyor, Superior's flagship prod- uct. "It's still operating, still runs like a champ," commented Rivisto. For the new plant, Kraemer added two more Telestacker Conveyors and four radial stacking conveyors. "Superior came up with some really interesting ways to convey material," said Rivisto. The design incorporated several splitters and diverters, giving Kraemer extra flexibility in moving material from one side of the plant to the other. A large surge tunnel was also added to the floor of the quarry to feed a screened product to the wash plant, allowing Kraemer's second shift crew to operate later into the evening. By March 15, 2017, the project was sub - stantially complete. The crew started bumping motors and adjusting the new equipment – getting the flow of material just right. The 1,000-tph capacity plant was finally on the bottom of the quarry floor with the dry and wash sides sitting opposite of each other. "We took a couple weeks longer than we hoped for, just to work all the bugs out," Rivisto said, "But, to pull this off in such a short period of time was really a testimony to several things. One, Superior certainly gets a big pat on the back. Other vendors do as well. They all came together, everybody worked together with us as the gen- eral contractor." Being a Good Neighbor In order to maintain good relationships with the city of Burnsville and nearby neighbors, Kraemer made sure to move a mass of old iron within eyesight of the interstate down to the quarry floor. Running a plant in a highly populated area can be tricky business. Noise and dust generated at quarries are often cause for concern to surrounding com- munities. "Most of our neighbors don't even know we exist here and we take a lot of pride in that," said Rivisto. Kraemer has an agreed-upon, long- term use development plan with the city of Burnsville. The agreement includes permission for Kraemer to mine further west in the quarry, allow- ing the company to tap into 30 more years of material reserves. Kraemer's partnership with Superior to restruc- ture the design of the plant will enable the company to continue mining over the next few decades in a more ener- gy-efficient manner. "Sixty years ago, they put the first shovel in the ground in Burnsville, a company from Plain, Wis., called Edward Krae- mer and Sons. Now, in 2017 we have a state-of-the-art limestone processing plant that will be very cost effective for 20 or 30 more years," said Rivisto. Information for this article courtesy of Superior Industries. QUARRY FLOOR

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