Abstract
The suitable size and shape of refractory blocks which are used for furnace constructioh, are investigated from the following points.
(1) suitable size for handling by brick masonry.
(2) efficiency of shaping during production.
(3) accuracy of size of finished products.
(4) prevention of damage on manufacturing.
(5) relation between shape and thermal expansion tendency.
(6) espansion and dynamics of arch are studied on small models.
