With the cross design mixing process and the single factor experiment, the properties of the high alumina mouidable refractory materials were studied on the following items: the effects of aggregate particle size distribution; the quantity of both the fine alumina powder and the combining clay; and the variety and quantity of the bonders. The main technical parameters were obtained. The factors which affect the properties of the mouldable refractory materials were discussed. It was found that under the cond...