Process Engineering

SENET’s process expertise is underpinned by a formidable hydrometallurgical process engineering team – one of the largest teams in Africa. Over the last three decades, SENET has established itself as a leading supplier of copper and cobalt processing solutions to the mining and metals sector.

SENET has completed more copper-cobalt solvent extraction (SX) and electrowinning (EW) plants on the African Copperbelt than any of its competitors. In addition to its copper-cobalt expertise, SENET has a substantial gold processing offering, encompassing knowledge across various mainstream technologies that include, but not necessarily limited to, carbon-in-leach (CIL), carbon-in-pulp (CIP) and carbon-in-solution (CIS) gold extractive technologies.

SENET boasts specialist knowledge in the extraction of gold from more complex orebodies such as refractory and sulphide ores. To that end, SENET has undertaken conceptual designs in general concentrator plants, bacterial leaching plants, and ultrafine grinding in combination with atmospheric or pressure leaching, to name but a few.

SENET’s process engineering department is supported by a full-time metallurgical test work engineer to ensure designs are rigorously managed and verified through a metallurgical test work programme. The engineer manages the daily tracking and reporting of results, thus relieving SENET’s clients of having to deal directly with laboratories during studies and projects.

SENET’s process engineering department possesses the full commissioning skills and resources to ensure that all projects have a seamless interface between the construction and commissioning phases, according to specification and within safety parameters.

Hydromet

SENET’s process expertise is underpinned by a formidable hydrometallurgical process engineering team. Over the last three decades, SENET has established itself as a leading supplier of copper and cobalt processing solutions to the mining and metals sector, having

completed more copper-cobalt solvent extraction (SX) and electrowinning (EW) plants on the African Copperbelt than any of its competitors.

Concentrators

SENET has designed a number of plants using the standard froth flotation technology to produce saleable concentrates. Recent flotation reference projects include the Proyecto Rio Tinto for Atalaya Mining where SENET successfully recommissioned

the processing plant facilities, consisting of crushing, fine grinding, flotation and concentrate thickening. As a result of this success, SENET was awarded another contract: to increase the run-of-mine (ROM) ore throughput to 7.5 Mt/a.

CIL/CIP

SENET has extensive experience utilising the well-proven carbon-in-leach (CIL)/ carbon-in-pulp (CIP) process technologies to produce saleable gold bullion from the treatment of oxide and sulphide ores.

SENET has delivered more than 24 West African project studies and projects to date in this commodity alone, cementing the company’s reputation further on the continent.

Heap-Leach

In the early 1990s, SENET developed a range of proprietary heap leach stacking and agglomeration equipment that soon enjoyed global success. SENET quickly evolved from being more than an equipment supplier to emerge as a leading engineering, procurement and construction management (EPC/EPCM) contractor for entire heap leach plants.

SENET’s first major installation was in 1994, the 1.2 Mt/a plant at Cluff’s Ayanfuri gold mine in Ghana, which ranked as one of the first heap leach facilities to be provided by an African company. Today SENET is considered a world leader in heap leach equipment technology, and SENET’s heap leach expertise includes having engineered, constructed and commissioned more than 12 different projects to date.

The success achieved by SENET in heap leach technology has extended to other commodities such as copper and uranium, where SENET has a demonstrated track record. SENET has further cemented its reputation as by offering tailored engineering and construction solutions, specific to a client’s business needs.

Featured Projects

PROJECT: COPPER - COBALT
Whole Ore Leach Project

SENET was contracted to carry out the design, engineering, procurement, inspection, expediting and logistics support activities required to impl...

PROJECT: GOLD
Varvarinskoye Gold Project

The Varvarinskoye Mine and Process Plant was built and commissioned by SENET in 2007. The tw o parallel streams were designed as follows: the fi...

PROJECT: COPPER - COBALT
Copper Cobalt Phase III

Phase III of the copper-cobalt project entailed upgrading the two existing copper-cobalt processing plants (Phases I and II) to increase the com...