Rotary hearth furnace for use in the iron and steel industry

Rotary hearth furnace for use in the iron and steel industry, comprising 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), wherein 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 distances, 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), wherein 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 and wherein both said wheels (26, 126) of the two sets are the same as one another, and that said rails (20, 120) have the same section.

Rotary hearth furnace for use in the iron and steel industry, comprising 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), wherein 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 distances, with sonorous (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), wherein 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 wherein said sectors (17, 117) are divided into two semi-sectors (17′, 117′) along arcs (18) of an intermediate circumference between the two end circumferences, internal and external, of the annulus of the hearth (14, 114), said arcs (18) dividing the sectors (17, 117) into two equally loaded semi-sectors (17′, 117′).

Rotary hearth furnace for use in the iron and steel industry, comprising 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), wherein 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 distances, 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), wherein 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 and wherein said base (28, 128) is held up by a support structure (16, 116), comprising concentric circumferential sets of columns (30, 130), aligned in groups on the same radii of said circumferences, where said radii are spaced at equal distances from one another, and having the same number of sectors (17, 17′).