Haver & Boecker unveils world’s largest grizzly

Haver & Boecker Niagara has custom-engineered the largest vibrating grizzly screen in the world. 

Manufactured with Hardox steel perforated plates and grizzly bars for a large Brazilian iron ore operation, the Niagara XL-Class vibrating grizzly screen boasts a capacity of 8,000 tons per hour and a cut size of 200 millimeters. 

As the largest exciter-driven machine in the industry, the XL-Class provides the operation with high-capacity screening while maximizing uptime and production. Combined with the grizzly technology, the XL-Class offers the necessary ability to remove large stones, relieving pressure on the primary crusher. 

“At 120 tons, the machine’s size required a modular approach, so Haver & Boecker Niagara engineered the XL-Class vibrating grizzly screen as two bodies,” the company said.

“With this customization, the 1.3-meter particles did not allow for the normal placement of exciters, resulting in adjusting the design to place three exciters beneath each body rather than the standard overhead location. Effectively screening material top sizes of 1.3 m, the XL-Class grizzly vibrating screen removes oversized materials to relieve the crusher.”

Sales manager Denilson Moreno said the company recognizes no two operations are the same, which is why it aims to understand all of its mining and quarry customers.

“We have worked with this customer for many years, but as they began production at what is the largest iron ore operation in the world, we realized to truly maximize output, it would require a durable and extremely efficient primary screen. That’s what led us to engineer and manufacture this XL-Class, which is now the largest vibrating grizzly screen on the market,” Moreno added.

Haver & Boecker Niagara listened to the operation’s challenges and employed their signature NIAflow plant simulation software to address them. The software analyzed the proposed plans, processes, goals and material for plant optimization, providing information to the customer and Haver & Boecker Niagara to design and custom engineer the one-deck vibrating grizzly screen.

To maximize uptime, the customer opted to equip the XL-Class vibrating grizzly screen with Haver & Boecker Niagara’s signature Pulse condition monitoring (Pulse CM) system. The advanced technology provides the producer with 24/7 access to the health of its vibrating screen.

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