Abstract
The result of the experiment of manufacturing mullite refractories from SiO2, Al2O3 type minerals was reported as follows:-
(1) The ore deposite of andalusite and cyanite in Korea.
(2) Physical and chemical properties of mullite refractories made from Korean andalusite in comparison with German sillimanite bricks.
(3) The present new mullite bricks ("Slasist A-1" bricks) has the characteristics of both silica and chamotte bricks, so that it is convinced that the former would develop more excellent results than the hitherto used silica or chamotte bricks, when used in the bottom, hearth, bosh and shaft of the blast furnace or used in the roof and gas parts of the open hearth and electric furnace.
