Mineral processing

This Department performs the scientific, research and design activities in the field of mineral processing, dressing and concentration. It includes laboratory scale tests, pilot and large-scale test. In addition, it prepares the basic and preliminary projects, techno-mechanical projects, revisions and nostrifications of domestic and abroad produced technical documentation, including introduction of process automatisation of machines, instruments and plant technological processes.
This department is organised in four specialised groups for:

• technological, laboratory and pilot tests,
• non-ferrous metals,
• remaining metals, non-metallic and energy resources,
• technological and mechanical designing,

with aim to satisfy the mineral industry requirements.

In the previous period, a large number of scientific and research projects have been prepared, mainly with the direct co-operation with other mining organisations in Macedonia. They include projects for dressing of lead, zinc, pyrite, copper, precious and rare metals, non-metallic minerals and energetic raw materials.
The most important achievements of the specialised staff of this department, which can be stated as an exceptionally scientific and research activities, on the base of which many complex projects have been worked out and realised in our country. Some of these activities can be mentioned as:

• Bulk flotation of Pb-Zn minerals and valuation of pyrite in Sasa mine, where better technological parameters of Pb-Zn and silver recovery have been accomplished, with reduction of environment pollution with toxically reagents.
• Gypsum dewatering at HIV Chemical Industry-Veles where a gypsum deposition by a double hydro-cyclone process has been accomplished for the first time, while the produces deposit of gypsum can be used in the cement industry.