The Terex Finlay 684 2 Deck Quarry Screener is a used screener — sometimes referred to as a screening plant or classifying screen — built for separating and grading bulk materials such as crushed rock, gravel, and aggregates in quarry and mining operations. Terex Finlay is a well-established manufacturer of mobile crushing, screening, and conveying equipment, supplying machines to the quarry, mining, recycling, and construction industries worldwide. This 2022 example is located in California, USA, and is offered at $289,500.
The feed system is generously proportioned, with a hopper capacity of 8 m³ (10.5 yd³) and a feed width of 4.77 m (15 ft 8 in) including grid wing plates, accepting large feed volumes without restriction. The feed height stands at 3.45 m (11 ft 4 in), allowing direct loading from wheeled loaders and other mobile plant.
At the core of the machine are two screen decks, each measuring 4.3 m x 1.7 m (14 ft x 5 ft 7 in), delivering a total screening area of 14.6 m² (156 ft²). The screen angle is hydraulically adjustable across a wide range of 18° to 37°, giving operators meaningful control over throughput and separation efficiency to suit varying material types and moisture conditions. An abrasion-resistant impact plate protects the screen structure at the feed point, and galvanised access catwalks are fitted at both sides and the top end of the screen box, providing safe working access for inspection and maintenance.
The fines conveyor features a 650 mm (26 in) wide belt with a chevron two-ply EP250 specification, equipped with hydraulic folding for ease of transport. It discharges to a height of 4.76 m (15 ft 7 in) and can build a stockpile of up to 194 m³ (254 yd³). The main cross conveyor runs at 1 m (40 in) wide, is steel skirted along its full length to contain material effectively, and is fitted with three anti-rollback plates to prevent material rollback during operation or in the event of a stoppage.
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