One factory. One guarantee.
Since 1998 we have built mineral processing machinery for mines in more than 30 countries — and we still assemble, test and commission every line ourselves.
Who we are
Machines first. Everything else follows.
DODIAG began as a workshop supplying wear parts and small mills to local mines. Twenty-five years later the same principle still runs the company: understand the ore, build the machine properly, then stand behind it.
Today we design and manufacture fourteen machine families covering the full beneficiation flowsheet. A single project team owns the flowsheet, the equipment list, the fabrication schedule and the commissioning — so there is no gap for a problem to fall into.
- ISO 9001:2015 certified
- National High-Tech Enterprise
- In-house R&D centre
- Turnkey EPC delivery
How we work
From ore sample to handover.
Four stages, one team. You always know which stage the project is in and who owns it.
01 · Test & flowsheet
Bench and pilot tests on your sample establish liberation size, recovery route and reagent regime.
02 · Engineering
Mass balance, equipment sizing, layout, structural and electrical drawings — issued for approval before fabrication.
03 · Manufacturing
Fabrication, machining and assembly in our own halls, with in-process inspection and a trial run before shipment.
04 · Commissioning
Site installation supervision, cold and hot commissioning, operator training and a performance test against the guarantee.
Spare parts
Wear liners, rotors, stators and bearings held in stock or produced to drawing, shipped within days.
After-sales
Remote diagnostics, scheduled inspections and upgrade studies for plants that need more throughput.
The works
Everything under one roof.
Plate cutting, rolling, machining, gear cutting, assembly and testing all happen on the same site. That means a mill shell, its girth gear and its trunnion bearings are matched to each other before they ever reach a container.
It also means we can test a complete circuit — crusher, mill, classifier and flotation bank — as a system, then ship it as a matched package with a single set of drawings.
- Fabrication & machining
- Gear cutting
- Assembly & trial run
- Electrical integration
Where we work
Projects in more than 30 countries.
Africa, Southeast Asia, South America, Central Asia and the Middle East — gold, copper, iron, tin, tungsten, chrome and industrial minerals.
Gold
Gravity and CIL/CIP circuits, from 20 t/d alluvial plants to 1,500 t/d hard-rock concentrators.
Copper & polymetallic
Crushing, grinding and differential flotation for copper, lead, zinc and mixed sulphides.
Iron & chrome
Multi-stage crushing, wet drum magnetic separation and gravity upgrading.
Work with us
Tell us what the ore needs to become.
Whether it is one machine or a complete plant, the first step is the same: describe the feed and the product you want.