| 摘要 |
A rotary hearth furnace for use in the iron and steel industry comprises a furnace ( 12, 112 ) with plan in the shape of an annulus, closed at the bottom by a rotary hearth ( 14, 114 ), lined at the top with refractory material ( 15, 115 ), and a base ( 28, 128; 30, 130 ) of the furnace ( 12, 112 ). Said hearth ( 14,114 ) comprises a plurality of sectors of an annulus ( 17, 117; 17', 117' ), all the same as one another and connected to form an annulus, complementary to that of the internal plan of the furnace ( 12, 112 ), which rotate around the central axis of the annulus, by means of two concentric sets of wheels ( 26, 126 ) arranged according to two circumferences, set at equal instances, with supports ( 25,125 ), fixed to the base ( 28 ) or below the hearth ( 114 ), complementary to two circular rails ( 20, 120 ), fixed respectively below the hearth ( 14 ) or the base ( 128 ). According to the invention, both said sets of wheels ( 26, 126 ) and said two rails ( 20, 120 ) are positioned in such a way as to have an equal load distribution. |
