How choosing the right equipment can save uptime

By |  January 12, 2022
The Eriez SP magnet seen here at a Carmeuse Lime & Stone operation removes large amounts of ferrous materials conveyed in heavy burden depths. Photo: Eriez

The Eriez SP magnet seen here at a Carmeuse Lime & Stone operation removes large amounts of ferrous materials conveyed in heavy burden depths. Photo: Eriez

Like their mechanical counterparts, vibratory feeders and conveyors quickly and easily move difficult material. Low energy, simple controls and AC operation increase the productivity and reliability of vibratory feeders and conveyors. High-volume feeders swiftly handle bulk material in volumes up to 2,250 tph.

Low-profile mechanical and vibratory feeders and conveyors require limited installation headroom and are designed for easy access to components to speed up and simplify maintenance.

Heavy-duty vibratory screening with grizzly trays can be used for scalping larger particles, allowing for effective removal of coarser product. Screening trays can also be designed for separation by size, dedusting or dewatering.

A closer look

Conveyors engineered for aggregate producers feature various components for optimum operation, including a drive system to generate the vibration, a trough to carry the material and springs to give the vibration amplitude creating motion.

Systems must be mounted from above or below to produce a consistent force. An AC or DC power source is required for operation.

Mechanical drives are the most common types of drives found in heavy-duty conveyors for processing aggregate materials. These drives create a back-and-forth motion of a trough caused by either direct mechanical linkage or by a stimulation motion with out-of-balance weights, and then amplifying that vibration into the trough through a set of springs.

Springs are used to convert the vibration from the drive to the trough and are available in a variety of materials, sizes and configurations. Dense rubber springs provide stability and motion control between the drive and trough, but they are limited to use in environments below 120 degrees. Steel coil springs are used in heavy-duty and high-temperature applications up to 300 degrees.

Troughs can be fabricated from mild steel or stainless steel. Mild steel is ideal for a variety of aggregate applications.

Troughs are lined with abrasion-resistant steel, stainless steel, polyethylene, epoxy, rubber or other coatings. Shape, length and width options are practically limitless. Every configuration of flat, curved, v-channel and tubular designs are available. Standard conveyors are offered in sizes up to 30 ft. in length.

More on magnetic separators

Suspended magnetic separators automatically remove copious amounts of ferrous from nonferrous materials conveyed in heavy burden depths on almost any type of conveyor or chute.

These units are a great match for separation applications on wet or dry, fine, or coarse materials in large or small tonnages.

Suspended magnetic separators are typically used to protect downstream crushers and other valuable material processing equipment. They are available in both manual and self-cleaning models. A range of standard sizes and models in both permanent and electromagnetic designs provides options ideally suited for any application.

Magnetic drums remove large and small pieces of tramp iron contamination from material processing lines. Crisscross, agitating and rare earth magnet circuits provide a variety of separation solutions to many different tramp iron problems.

Heavy-duty drum magnets are high-volume ferrous separators typically used to remove or recover metals. They are available in up to 84-in. diameters and 72-in. widths, featuring up to a 15-in. magnetic field reach.

More on metal detectors

Metal detectors are designed to detect ferrous, nonferrous and non-magnetic stainless steel metals in limestone, rock, coal and other materials.

Metal detectors are rugged and easy to install and maintain on flat and troughed conveyors. They are extremely stable and will not false trip when subject to industrial vibration.


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