Millstone type rotary hearth furnace
A rotary hearth furnace and grinding disc technology, applied in the field of metallurgy, can solve the problems of restricting the application of rotary hearth furnaces and the inability to meet the production scale needs of large iron and steel enterprises, and achieve the effects of simple structure, reduced floor space and reliable operation
Inactive Publication Date: 2013-05-08
柯妍
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Problems solved by technology
This capability greatly limits the application of rotary hearth furnaces in large ironmaking plants, and cannot meet the production scale needs of large iron and steel enterprises.
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[0018] A kind of disc type rotary hearth furnace of the present invention, its preferred embodiment is:
[0019] As shown in the figure, a disc type rotary hearth furnace of the present invention has a main body consisting of an upper furnace pan 2, a distribution plate 4, a lower furnace pan 5, a scraper plate 7 and a furnace wall 11. The upper oven tray 2 and the furnace wall 11 are fixed, and the lower oven tray 5 can move in a circle around the center. In order to form a closed space, a water seal or a sand seal 8 is set between the lower furnace pan 5 and the furnace wall 11 .
[0020] The center of the upper furnace plate 2 is provided with a feed pipe 1 for feeding materials. A certain number of burners 3 are installed at the bottom of the upper furnace plate 2, and the materials are heated by the flames emitted by the burners 3.
[0021] The upper part of the lower furnace pan 5 is a distributing plate 4, the bottom is a support mechanism 9, and one or several pairs o...
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The invention provides a millstone type rotary hearth furnace. A main body is composed of an upper furnace plate, a material arranging plate, a lower furnace plate, material scrapping plates and a furnace wall. The upper furnace plate and the furnace wall are fixed, the material arranging plate, the lower furnace plate and the material scrapping plates can move circularly round a center, and a water seal or a sand seal is arranged between the lower furnace plate and the furnace wall. A feed pipe is arranged in the center of the upper furnace plate, and a nozzle is formed in the bottom portion of the upper furnace plate. The material arranging plate is arranged on the upper portion of the lower furnace plate, a supporting mechanism is arranged on the bottom portion of the lower furnace plate, and a pair or multiple pairs of material scrapping plates are symmetrically arranged all around the lower furnace plate. Each material scrapping plate is an inlaid milling face, and a plurality of radial tooth grooves are formed in the milling face. Through centrifugal force produced by the rotation of the material arranging plate, the functions of material arranging and material turnover can be achieved. Materials are concentrated to a discharge pipe through the material scrapping plates to be discharged. The millstone type rotary hearth furnace has the advantages of being simple in structure, reliable in running, small in occupied area, high in efficiency and the like.
Description
technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a disc-type rotary hearth furnace. Background technique [0002] The Rotary Hearth Furnace started as an annular heating furnace for rolling steel, and has been transplanted into smelting equipment for more than ten years to deal with iron-containing and zinc-containing dust in steel plants, and then evolved into equipment for producing sponge iron. Compared with other ironmaking methods, the rotary hearth furnace has the advantages of flexible requirements for raw materials, fuels and reducing agents, simple process, and easy manufacturing of equipment, so the investment is low and the cost is low. [0003] The rotary hearth furnace is composed of a rotatable furnace bottom part and an annular tunnel formed by a fixed furnace wall and furnace top part. The ring-shaped furnace roof is composed of several sectors, which can be vaulted or suspended. The furnace wall is divid...
Claims
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IPC IPC(8): F27B13/00F27B13/06
Inventor 柯妍
Owner 柯妍