Dry enrichment complex (DEC)
New technology for the extraction of metal-bearing minerals (gold, silver, platinum, copper, etc.). Also, non-metallic (semi-precious and precious stones, such as diamonds) from loose ore deposits and from manufacturing waste (slag) from mining, ore-dressing and metallurgical industries.
The technology is based on pilot studies carried out on various types of raw materials:
- enrichment of semi-oxidized and oxidized quartzite to obtain concentrate, where Fe total is 67-68%;
- enrichment of gold-bearing ore deposits in Ukraine, ephel dumps in the Magadan region and Yakutia in Russia with the extraction of fine, floating gold;
- processing of metallurgical slags of Kryvorizhstal, Dneprospetsstal, Makeevka plant in Ukraine with the production of Fe total ~ 99% and oxides with Fe total ~ 53-60%;
- waste processing of the Production Association Southern Machine-Building Plant in Ukraine with the extraction of Fe, Ni, Mn;
- processing waste from the Nikopol ferroalloy plant in Ukraine and Tulachermet in Russia to obtain FeMn and FeV.
The enrichment process begins at the first processing stage directly into the "know-how." rotary self-grinding mill. Technological possibilities for the enrichment of mineral raw materials in a dry environment, thanks to the features of the developed design of the mill and separators, provide the extraction of metal inclusions with sizes of 20 microns or more. It is also possible to extract the finely dispersed metal, including. They were floating gold in sulphides with dimensions up to 1 micron or less. Extraction of finely dispersed metal is provided at the level of 90-99% for particles> 0.01 mm, in dry enrichment mode without the use of water and chemical components.
The quality of the resulting concentrate, where the gold content reaches 90%, allows metallurgical smelting directly at the mining and enrichment site. The resulting complex concentrate, if necessary, taking into account its further processing, will enable you to extract both "non-ferrous" and "ferrous" metals (Cu, Al, Fe, Mo, W, Sn, etc.). Further, the technological scheme provides for separate enrichment of coarse, medium and fine sand fractions.
Separate processing of various fractions makes it possible to optimize the technological parameters of enrichment, taking into account the morphology and properties of raw materials of different sizes and, as a result, increase its efficiency and eliminate losses (especially among finely dispersed raw materials).
The developed equipment for dry enrichment technology has a low weight and block-modular design. Easy to supply processed raw materials between individual technological operations, tubular conveyors and pneumatic transport are used.
All this makes it possible to significantly reduce the volume of capital construction work and design a periodically mobile complex. The primary and auxiliary equipment for dry enrichment has a considerably longer service life and operational reliability level than equipment operating on technologies using water (no corrosion).
Preliminary economic indicators DEC
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