The unique features of the DNi Process™

The DNi Process™ uses nitric acid to dissolve and recover any saleable metal found in lateritic ores, tailings and waste material from other processes including, potentially, slag produced by ferro-nickel plants.

The unique and patent-protected aspect of the DNi Process™  is that 95% of the nitric acid is recycled (with 5% remaining in a nitrogen-rich residue).

Whilst originally developed to produce products for use in the steel industry, its flexible and smart chemistry enables the DNi Process™ to produce products ideally suited to refining for the EV battery market, principally nickel and cobalt, with a number of other saleable products produced such as haematite for the steel or pigment industry and magnesium oxide, which has many applications.

The DNi Processtreats the entire lateritic ore profile, limonite, saprolite and any transition zone which may be present – maximising mine profitability. It is a flexible process able to adapt to changing market demands and can produce nickel metal or battery precursors (such as nickel sulphate, cobalt sulphate and cobalt oxide), an MHP or an MOP and extract any metal which will dissolve in nitric acid.

The DNi Process™ may also be applied to mine tailings and the waste products of pyro-metallurgical processes (subject to confirmation by testing).

The DNi Process™ is a hydrometallurgical process making it easily scalable and because nitric acid does not attack stainless steel, the materials of construction for the plant are inexpensive and easily sourced.

The DNi Process™ is environmentally sympathetic setting it apart from any other hydrometallurgical or pyrometallurgical processes – and:

The DNi Process™ is cost effective technology

The DNi Process™ will deliver nickel, cobalt and other co-products at a cheaper cost than any currently utilised technology.

The DNi Process™ utilises continuous,  rapid  tank  leaching,  to achieve  high  metal  recovery rates, particularly of nickel and cobalt but also of haematite, magnesium oxide, scandium or any other metal which will dissolve in nitric acid.

The DNi Process™ delivers better  economic  use  of  the mined resource, effectively doubling mine utilisation.

The DNi Process™  does  not  require  high  pressures  or  high  temperatures,  or  exotic  materials  of  construction – with a minimum threshold plant size of around 5,000 tonnes per annum nickel output this is significantly smaller than the entry-level plant which competing technologies must build.