GZ Electromagnetic Vibrating Feeder | Precise Feeder

Wed, 17 Jun 2026 16:57:54 +0000

Where the GZ electromagnetic feeder fits

The GZ electromagnetic vibrating feeder is the precision metering device of a mineral plant. Where the heavy ZSW grizzly feeder handles surging run-of-mine, the electromagnetic feeder excels at fine, controlled dosing of smaller, drier material, feeding a steady, even stream onto belts, into mills, ahead of screens, or to reagent and concentrate dosing points. Its hallmark is responsiveness: output can be ramped from zero to full instantly by varying the control current.

How it works

An electromagnet pulses against a spring-loaded armature, driving the trough in a high-frequency, short-stroke vibration (typically near 3,000 cycles per minute on standard mains). Each micro-throw nudges material forward in tiny hops, so flow is smooth and continuous. Because the feed rate is set purely by the electromagnet’s current, it can be regulated precisely with a simple thyristor controller and tied into automatic plant control.

Why choose electromagnetic

The feeder has no rotating bearings, no eccentric and no motor to lubricate, so wear and maintenance are minimal and energy use is very low, often under 1.5 kW even on large troughs. As a rule of thumb, choose an electromagnetic feeder when you need accurate, fast-responding control of dry fines or granular material; choose a heavy mechanical feeder for coarse, abrasive run-of-mine. Xinhai sizes trough width and length to your rate and material bulk density.

Instant, stepless feed-rate control
No rotating parts – low wear and maintenance
Very low energy consumption
Easy automation via current control

Selection and operation

Material should be reasonably dry and free-flowing; very wet or sticky feed damps the vibration and reduces output, and abrasive material calls for a wear-lined trough to protect service life. The feeder is commonly mounted under a hopper to meter onto a belt or into a crusher or grinding circuit, complementing the coarse-duty ZSW grizzly feeder at the plant front end where surging run-of-mine arrives. Accurate, steady feed stabilizes downstream units such as a vibrating screen or a mill, improving sizing and grinding efficiency, because most processing equipment performs best at a constant feed rate rather than a fluctuating one.

See the full feeders and conveying range. For help selecting trough size and controller for your duty, contact our engineers.

ZSW Vibrating Grizzly Feeder | Primary Feeder

Wed, 17 Jun 2026 16:57:54 +0000

What the ZSW grizzly feeder does

Every crushing plant starts with a feeder, and the ZSW vibrating grizzly feeder is the standard choice ahead of primary crushing. It sits under the dump hopper and delivers a steady, controlled stream of run-of-mine ore to the jaw crusher, smoothing out the surges that come from a truck or loader tipping. Just as important, its grizzly section pre-screens the feed so the crusher only handles rock that actually needs crushing.

How it works

Twin vibrating motors (or an eccentric exciter) drive the feeder trough in a linear motion that conveys material forward. The first section is a solid pan; the discharge section is a grizzly of spaced, wear-resistant bars. As ore travels along, fines and dirt below the bar spacing drop through and bypass the crusher, while oversize continues into the crushing chamber. Bar gap is set to your crusher’s closed-side setting so you never crush material that is already on size.

Why pre-screening pays

Scalping fines before the crusher is one of the cheapest ways to raise plant capacity. Removing 10-25% undersize means the crusher does less work, wears more slowly and passes more on-spec product. As a rule of thumb, the more fines and clay in your run-of-mine, the more a grizzly section earns its keep. Xinhai sizes trough width, length and bar gap to your feed and to the crusher mouth it serves.

Surge control for steady choke-feeding of the crusher
Grizzly bars that scalp fines and bypass the crusher
Wear-lined trough for abrasive run-of-mine
Adjustable amplitude to set the feed rate

Selection and operation

The feeder should be sized to comfortably exceed the crusher’s appetite so it never starves the chamber, with feed rate trimmed by the vibrating-motor amplitude or a variable-speed drive. The fines that drop through the grizzly typically join the crusher product on a vibrating screen downstream. For finer, controlled metering into furnaces or grinding circuits, see the electromagnetic vibrating feeder.

Browse the full feeders and conveying range. A well-matched feeder is the foundation of a stable crushing circuit, so for sizing help contact our engineers.

Feeders & Conveying – Xinhai Mineral Processing EPC

GZ Electromagnetic Vibrating Feeder | Precise Feeder

Where the GZ electromagnetic feeder fits

How it works

Why choose electromagnetic

Selection and operation

ZSW Vibrating Grizzly Feeder | Primary Feeder

What the ZSW grizzly feeder does

How it works

Why pre-screening pays

Selection and operation