DATMOS® Technology

The In-House Technology Development Division (DDTP) has developed a technology for the direct leaching of metal sulfides at atmospheric pressure that enables high metal recoveries under mild conditions and with short reaction times.

The DATMOS® technology enables the recovery of zinc directly from metal sulfides without the need for a roasting stage and without the limitation of having to use high-grade zinc concentrates.

Under the standard reaction conditions of the DATMOS® technology, it is also possible to leach other metals present in the ore or polymetallic concentrate; however, to estimate leaching efficiencies, it is necessary to experimentally study the behavior of the material.

The DATMOS® technology consists of the following units:

Direct Leaching I

Zinc sulfide is dissolved under mild acidic conditions using O2 as an oxidizing agent and the acid solution produced in the direct leaching stage II.

Direct Leaching II

The solid resulting from the previous stage is treated with a mixture of O2 and SO2, which creates more oxidizing reaction conditions and effectively dissolves the zinc sulfide.

Zinc sulfide is dissolved under mild acidic conditions using O2 as an oxidizing agent and the acid solution produced in the direct leaching stage II.

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