ISO Tumbler Test Device | Double Drum

STANDART: ISO 3271:2015

LT-M1566 ISO Tumbler Test Device | Double Drum

The ISO Tumbler Test Device | Double Drum is designed to determine the resistance of iron ore materials to size degradation caused by impact and abrasion. Its dual-drum configuration allows two test samples to be processed simultaneously, increasing laboratory testing capacity.

ISO 3271 testing: Supports determination of tumble and abrasion indices for iron ore materials.
Double-drum system: Operates two test drums simultaneously.
Applicable materials: Suitable for lump ores, sinters and hot-bonded pellets.
Adjustable rotation speed: The automation system allows the operator to control drum speed according to the test programme.
Programmable revolution count: Required revolutions can be preset through the control system.
Digital monitoring: The panel displays test time and completed revolutions.
Automatic positioning: The drums automatically stop at a suitable loading or unloading position.
Sealed drum covers: Easy-opening covers help minimise dust and material leakage.
Discharge tray: Supports controlled collection of the sample after testing.
Safety enclosure: A protective steel cabinet separates moving components from the operator.
Door safety interlock: Prevents drum operation while the protective door is open.
Emergency stop: Allows immediate shutdown when required.
Noise-controlled cabinet: Liya Test states that enclosure noise does not exceed approximately 85 dB.
Standard compliance: Designed for tests according to ISO 3271:2015.

What Is a Double Drum ISO Tumbler Test Device?

The Double Drum ISO Tumbler Test Device evaluates the resistance of iron ore materials to degradation caused by mechanical impact and abrasion. The test exposes a prepared sample to repeated tumbling inside a rotating drum and evaluates the resulting particle-size changes.

The method is used for lump ores, sinters and hot-bonded pellets intended for blast-furnace and direct-reduction applications. ISO 3271 defines the determination of both the tumble index and abrasion index, providing a relative measure of material resistance to mechanical degradation.

Double-Drum Testing System

The Liya Test system can rotate two drums simultaneously. This configuration allows laboratories to process two specimens within the same operating cycle and can improve throughput in routine iron-ore quality control.

The operator loads the prepared specimens, closes the drum covers and selects the required test programme. The automation system controls drum movement, test duration and revolution count.

Liya Test specifically states that the machine can operate two drums at the same time and that both speed and revolution count can be controlled through the automation system.

Programmable Speed and Revolution Control

The control panel displays the number of revolutions and test duration. Before each new test, the counter can be reset and a new operating programme can be selected.

When the programmed cycle is complete, the system automatically stops the drums. Automatic positioning also brings the equipment to a suitable loading or unloading position, simplifying sample handling.

This controlled operating sequence helps laboratories apply consistent test conditions to consecutive specimens.

Sealed Drum Covers and Sample Collection

Each drum uses a sealed cover designed to integrate with the internal drum surface. The cover can be opened and closed easily while helping limit material and dust loss during operation.

A discharge tray positioned beneath the system helps collect the specimen after tumbling. This arrangement simplifies transfer of the material to the subsequent sieving and weighing stages.

Protective Enclosure and Safety System

The rotating equipment is enclosed inside a protective cabinet. A safety switch on the enclosure door prevents the machine from operating while the door is open.

An emergency-stop system provides additional protection when immediate shutdown is required. Liya Test also states that the protective enclosure is designed to keep the sound level at approximately 85 dB or below.

Tumble and Abrasion Testing According to ISO 3271

ISO 3271:2015 specifies the determination of tumble and abrasion indices for blast-furnace and direct-reduction iron-ore feedstocks. The standard applies to lump ores, sinters and hot-bonded pellets.

The 2015 edition underwent another systematic review in 2026 and was confirmed as current, so there is no need to replace it with another edition on the new website.

Overall, the Double Drum ISO Tumbler Test Device combines simultaneous two-drum operation, programmable control, automatic positioning and integrated safety functions. Therefore, iron-ore laboratories can perform tumble and abrasion testing under controlled and repeatable conditions.