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Complex conveyor protective KKZ-1 (metal detector)

Complex conveyor protective KKZ-1 (metal detector)

Complex conveyor protective KKZ-1 is intended to prevent failure of the crushing equipment, due to the ingress of rudozasoryayuschih not crushable metal bodies.

System of conveyor protection KKZ-1M is designed for detection of non-crushing metal fragments such as drill bits and rods, lining fragments, reinforcing rods, etc .Ores with magnetic and electrically conductive properties are feasible for detection also. We guarantee the detection of metal fragments in a wide range of sizes, different form factors, from magnetic and non-magnetic alloys, including high-manganese steels and non-ferrous alloys. The system is installed on conveyor belts with rubber-fabric tape.

 All harmful materials must be removed as far as possible at an early stage in treatment in order to reduce the number of plant downtime due to damages to the conveyor belt and crushing equipment. Otherwise, the plant can incur significant losses.

Detection is based on the principle of electromagnetic pulse sensing. The conveyor pile is analyzed by electromagnetic waves penetrating the material surface, which ensures reliable determination of the metal fragment, regardless of its position on the belt.

The system is a completely digital, thus ensuring the stability of indication. KKZ-1M is a device with a high degree of automation. The required operating settings are set during tuning and stored in the device memory. All parameters and operating results are accessible to the operator through the local computer network of the plant. Also it is enabled for offline operation without connection to the plant network. KKZ-1M enables to make program changes to the tuning mode in order to search for the smallest metal fragments, or, on the contrary, to exclude responses for small fragments that are not harmful to the plant equipment.

If a metal fragment is detected, the system activates light signal indicating location of the fragment, then the belt conveyor is stopped for manual removal or a guard magnet is activated for automatic removal. KKZ-1M reduces the down time of the conveyor and the labor consumption of removing the detected metal fragment by accurately indicating its location in the conveyor embankment with a special light indicator.

To protect our station from oversized lumps of ore we also offer protective device against oversize material, named ZUN-1, which enables to avoid emergencies.

Installation of KKZ-1M does not involve construction and installation works, modification of conveyor structures, or other additional measures. The device is installed on a standard conveyor belt with a supplied kit.

System of conveyor protection KKZ-1M includes: receiving and transmitting units, microprocessor control unit and support frame. The transmitter unit is installed above the conveyor belt. The receiving unit is installed under the conveyor belt.

The complex consists of the following, blocks:
-generator unit;
-transmitting unit;
-receiving unit;
-the control unit, the light and sound alarm.


Principle of the device is a logical time probing ore flow in two different, different in several times frequencies of the electromagnetic field. A probe signal generator is formed by a special shape, arranged in the generator unit, and fed to a transmitting unit, which is a rectangular elongated flat inductor located above (or below) the conveyor in a plane parallel to the flow of the ore.

Technical parameters KKZ-1

Parameter name


Rated voltage, V


Rated frequency, Hz


Operating temperature range, ° C

от -10 до +40

Power consumption, not more than, W


Setup time, not more than, min


Belt width, mm

от 1000 до 2500

Conveyor speed, m / s

от 0,5 до 3,0

Transported materials

Ore containing magnetite pyrrhotite with an iron content not more than 50%, and other materials

Layer height of transported material, no more, mm


Lifetime, at least, years


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