Societe Europeenne Des Produits Refractaires

Bruno Pascal Albert Aleonard

Alain Paul Bernard Zanoli

A process for producing fused alumina-zirconia grits includes mixing raw materials suitable to produce grits with the following chemical composition, in % by weight: ZrO+HfO: 10&#x2013;60%, AlO: 38&#x2013;90%, SiO: &#x3c;0.8%, and Impurities: &#x3c;1.2%. The process also includes adding carbon and aluminum metal to the mixture of raw materials to obtain a charged batch containing, in % by weight,: Carbon: 0.4&#x2013;1% Aluminum metal: 0.5&#x2013;2.5%. The process further includes melting the charged batch in an electric arc furnace with a voltage of 175&#x2013;205 V and a delivered specific electrical energy of 2.5 to 4 kWh per kg of charge.

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Avignon, France

Bruno Pascal Albert Aleonard