ENGINEERING DOBERSEK GmbH

ENGINEERING DOBERSEK GmbH delivers separation plants for separation and classification of solid materials for various applications. The ContiClass®System patented by ENGINEERING DOBERSEK GmbH provides continuous classification of ores. An essential precondition for perfect separation is constant pressure at the hydrocyclone inlet. The ContiClass®System is designed to enable pressure variations to be counterbalanced by a speed-controlled pump. As an additional effect the pump lifetime is extended tenfold, because, amongst further positive effects, cavitation is avoided. 

A regular problem in ore treatment plants is that constant ore feed cannot be guaranteed. In order to counteract feed variations, mills and pumps have to be switched on and off. This is not necessary for those plants equipped with the ContiClass®System delivered by ENGINEERING DOBERSEK GmbH. 

Separation plants are mainly used for non-ferrous, precious and heavy metal extraction. To digest extracted ore, e. g. nickel or copper, the ore is ground in ore mills and mixed with water in order to achieve a pumpable suspension. For perfect digestion of the contained metal a particular grain size is necessary. However, after grinding the grinding the ore grain sizes vary strongly and cannot be easily altered.
The ContiClass®System solution for a profit-increased extraction of non-ferrous, precious and heavy metals (like copper, nickel, zinc, gold) as well as of mineral ore (phosphates) is increasingly used by our customers. Other possible applications are mine refilling, silica sand extraction and coal treatment.

ENGINEERING DOBERSEK GmbH is a “full line supplier” of turnkey installations for metallurgy, specialized in engineering, design as well as erection and commissioning of complete plants for extraction of non-ferrous and precious metals, like e. g. copper, lead or gold. These metals are extracted from primary materials like ore, concentrates and intermediates.

Together with our customers we develop and realize integrated plant concepts using processes and aggregates for pyrometallurgical (e. g. melting and refining furnaces) and hydrometallurgical metal extraction(e. g. copper refinery). Planning and implementation also includes all necessary devices for the supply of process materials (water, pressed air, fuel, oxygen …) and electrical engineering.

Due to the substantial know-how of their personnel, ENGINEERING DOBERSEK GmbH is able to supply all peripheral installations necessary for plant operation, starting from heat recovery via burnt gas treatment up to cleaning. All installations are designed under consideration of country-specific and governmental obligations.

This unique design allows separate cleaning of granular and slurry fraction in one machine.

This device can be used for mechanical activation of non-ferrous and ferrous metal ores as well as for coal or other mineral resources whose particles have been in prolonged contact with the liquid phase and flotation agents.

ContiMAC is used before desorption, before selective separation of concentrates and before subsequent cleaning in the extraction of the finished concentrate.