Process for the preparation of high alumina cement

A process for the preparation of high alumina cement comprising:

• introducing a solid batch material for preparation of high alumina cement into a melter comprising submerged burners and melting chamber walls;
• melting the solid batch material in the melter by submerged combustion to form a liquid melt;
• withdrawing at least a portion of the liquid melt from the melter;
• cooling said discharged liquid melt to obtain a solidified melt;
• and
• grinding the solidified melt to appropriate grain size;
• wherein the melting chamber walls are cooled using double steel walls separated by circulating cooling liquid and are not covered by a refractory lining.