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Electric Arc Furnace

 
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 Within the recent years - for the different types of Electric-Arc-Furnaces (EAF) enormous technological developments have been the reasons for major changes of process parameters whilst productivity and economic efficiency of EAF- mills rised over time.
CIMM accompanies these process improvements actively. The refractory lining concepts are continuously improved in order to meet those challenges; added by innovative machines and gas purging systems. 
With these solutions for EAF- steel production CIMM proves not only refractory cost optimization but remarkable technological added values too.

In EAFs with a need of high-power input and therefore with a long-arc melting procedure, water cooling panels are a common standard in the upper furnace sections. Lower side wall sections in state-of-the-art EAFs are lined with Magnesia-Carbon bricks of highest quality. The combination of raw materials and a specific bonding system lead to the aimed highest thermal flexibility, combined with lowest porosity and optimized slag resistance.
 
An electric arc furnace used for steelmaking consists of a refractory-lined vessel, usually water-cooled in larger sizes, covered with a retractable roof, and through which one or more graphite electrodes enter the furnace. The furnace is primarily split into three sections:
the shell, which consists of the sidewalls and lower steel bowl; 
the hearth, which consists of the refractory that lines the lower bowl; 
the roof, which may be refractory-lined or water-cooled, and can be shaped as a section of a sphere, or as a frustum (conical section). The roof also supports the refractory delta in its centre, through which one or more graphite electrodes enter.
  150T EAF
 
100T UHP EAF
 
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