Metallurgy and mining industry
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Vacuum casting Reducing the pressure above the molten metal affects the processes occurring in the gas phase: When melting metals, it is used to remove dissolved gases (oxygen, hydrogen, nitrogen) and easily evaporating metal impurities (for example, zinc and lead) from the melt, regulate the content of non–metallic inclusions, etc.; when casting, it is used to remove gases from a mold filled with molten metal, which makes it possible to obtain high–quality castings. This method is used in the vacuuming of steel, in the production of high-purity metals and alloys (for example, niobium, tantalum, high-temperature alloys based on nickel, cobalt), etc. Pressure reduction in the steel filling ladle is provided by high-performance water ring vacuum pumps of the LRE and LRF series. |
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Vacuum furnaces
Vacuum heat-treating furnaces are essential in the production of aluminum alloys used in the structure of aircrafts and jet engine blade coatings. Because aircrafts need to function at optimum levels dependent on the environmental conditions, a plane’s life relies on the structure of its alloy that is produced in the vacuum furnace. In the aerospace industry, heat treatment is performed to improve the overall life and functionality of components and enhance their resistance to wear and corrosion. The vacuum furnace is used to heat metals to extremely high temperatures while achieving high consistency and low contamination of gases, blocking oxygen and reducing rapid oxidation. |
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Vacuum pumps for vacuum filters of dewatering and drying processes in water-slurry facilities A vacuum filter is an apparatus for separating suspensions, i.e. liquids containing suspended solids. Separation occurs as a result of the pressure difference created by the vacuum pump above and below the filter partition. The choice of a liquid ring vacuum pump in terms of performance is carried out based on the condition of the specific air consumption for filtering and dewatering the sediment on the filter belt, equal to approximately 5 m3/m2-h. LRF series pumps are highly efficient and successfully create the required vacuum in all operating modes. |
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Pumping out the methane-air mixture Explosion-proof liquid ring pumps of the LRE and LRF series are also used for mine degassing in the coal industry. The suction, collection and removal of firedamp from underground mine workings to the surface is carried out through pipelines laid in the mine workings or through boreholes connecting the workings to the surface. Vacuum pumps are located on the surface of the shafts and ensure gas movement in the degassing system. The use of mine degassing has led to the creation of a new technology for the development of gas-bearing coal seams, taking into account the associated methane production. |
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- CVU 100-20 GSL
- CVU 100-40 GSL
- CVU 100-63 GSL
- CVU 300-40 GSL
- CVU 300-63 GSL
- CVU 300-100 GSL
- CVU 500-200 GSL
- CVU 500-300 GSL
- CVU 300-160 GSL
- CVU 300-20 GDL
- CVU 300-40 GDL
- CVU 500-40 GDL
- CVU 500-63 GDL
- CVU 500-100 GDL
- CVU 900-100 GDL
- CVU 900-200 GDL
- CVU 900-300 GDL
- CVU 100-10 GDL
- CVU 300-20 GTL
- CVU 500-20 GTL
- CVU 500-40 GTL
- CVU 500-63 GTL
- CVU 900-63 GTL
- CVU 900-100 GTL
- CVU 900-200 GTL
- CVU 900-300 GTL
- CVU 500-71 Q
- CVU 900-71 Q
- CVU 900-101 Q
- CVU 900-201 Q
- CVU 1600-201 Q
- CVU 900-301 Q
- CVU 1600-301 Q