Sandvik debuts three-deck Doublescreen

Sandvik Mobile Crushers & Screens introduced the QA452 triple-deck mobile screen, which it says provides enhanced productivity, sustainability, flexibility, connectivity and safety. Photo: Sandvik Mining & Rock Solutions

Sandvik Mobile Crushers & Screens introduced the QA452, a three-deck Doublescreen solution that is the latest in Sandvik’s QA series.

The company says its Doublescreen technology typically outperforms traditional screens by up to 30 percent, offering tailored rock processing solutions for the quarry, recycling and mining industries.

Sandvik engineered the three-deck tracked mobile plant with independent screen-angle adjustments and hydraulic screen separation. The plant also features two triple-deck incline screen boxes with equal-size screen decks, providing 100 sq. ft. of screening area.

Productivity

Screen enhancements include an 11 percent longer bottom screen deck to extract more fines, Sandvik says.

Featuring independent screen-angle adjustment, the primary screen can be independently adjusted from the secondary screen, allowing operators to optimize their throughput, screening efficiency and product gradations. The primary screen serves as a fines extractor, while the secondary screen operates as a grader.

Sustainability

The new plant offers a hybrid “e” drive with electric plug-in, meaning operators can choose the most economical and efficient energy source.

The QA452 provides a lower environmental impact due to reduced fuel consumption, according to the company. Sandvik adds that the latest power pack onboard offers less operating noise and low emissions.

In addition, the hydraulic system was enhanced to reduce energy waste, and its hydraulic oil change intervals were extended from 2,000 to 4,000 hours. The company says this means up to 50 percent less hydraulic oil is consumed over 10,000 hours of machine usage.

Flexibility

The primary screen can be hydraulically separated to gain better access for maintenance and screen media changes.

The addition of a new oversize cross conveyor means greater oversize material extraction. This cross conveyor can also be reversed, allowing the plant to function like a two-deck screen with oversize and mid overs discharged together.

Each screen deck features end-tension screen media using Sandvik’s mesh tensioning system. This means faster screen mesh tensioning and removal​ when operators need uptime, Sandvik says.

The new range of Sandvik WX rubber media combines the high accuracy of wire screens with the durability of rubber, the company adds, offering up to 10 times longer wear life and up to 50 percent faster installation time compared to wire mesh. Having equal size panels also means the screen media is interchangeable between decks.