The processes and technologies used in the non-ferrous metal industries place many specific and challenging demands on furnaces and refractory materials used.
Our experienced engineers are constantly working to provide our customers with the best possible refractory solutions to meet their individual requirements.
VGH offers refractory brick lining using high-quality Magnesia-Chrome Bricks.
The lining design should contain highly abrasion and oxidation resistant refractory materials. The grades and geometries of the kiln lining bricks are matched to the kiln size and the different stresses caused by the operating process.
VGH offers lining designs with Magnesia-Spinel Bricks made of high-quality magnesia and synthetic spinel.
The Flash Smelting Furnace uses a pyrometallurgical process for smelting copper sulphide concentrates.
VGH offers refractory brick linings made of high-quality raw materials.
We are dedicated to always meet the specific operational requirements of our customers in order to promote cost-efficient and safe operations.
The refractories implemented in the lining design are selected to meet the various challenges that accrue during the smelting process.
VGH lining designs for the Flash Smelting Furnace utilizes direct-bonded magnesia-chrom refractory bricks as their material properties are conducive to the melting process.
Theramer refractory bricks for the anode furnace are made of different components depending on the section of the furnace and the different stresses to which these sections are subjected during the melting process.
Lining materials by application area
Rebounded Magnesia-Chrome Brick
Direct Bonded Magnesia-Chrome Brick
Direct Bonded Magnesia-Spinel Brick
VGH offers lining designs implementing various types of Theramer refractory bricks.
Aluminum and its alloys is an important key raw material for many industrial sectors. Aluminum plays an important role e.g. in electronic products, as a building and construction material, in the packaging industry and in many more.
Refractory materials are an essential component in almost all manufacturing steps, both in production and in recycling processes.
The refractory materials in the ABF must be able to withstand a whole range of stressors during production. Severe corrosion can occur due to the effects of alkalies, sulfur and fluorine. Next to chemical attacks the refractories must also be able to encounter mechanical stresses, thermal cycling and high temperature deformation.
Because of these specific requirements for refractories used in the ABF, a variety of products based on, for example, andalusite, tabular, fused mullite, or reactive alumina are recommended because their product properties meet these requirements and therefore promote long refractory life, better overall performance, and low maintenance.
The reduction of aluminum during the manufacturing process is achieved by using an electrolyte bath containing cryolite.
Due to this process, the refractory materials in the pot furnace must have high resistance to alkali- and fluoride-induced corrosion in addition to thermal cycling.
Therefore, theramer refractories for the pot furnace are designed to provide the following characteristics:
The refractory materials in this furnace can be subject to corundum outgrowths that can form where atmosphere, aluminum and refractory materials meet.
This happens due to a direct reaction between silica and aluminum, which can be suppressed by the use of anti-wetting components.
Theramer refractory materials for the Melting and Holding Furnace are specially designed to have high resistance to attacks from molten aluminum. To achieve this, high purity fused alumina with a modified matrix structure is utilized.
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