Pressure-resistant Design Scheme of Blast Furnace Bottom
A blast furnace shell and blast furnace technology, applied in the direction of the internal form, etc., can solve the problems of furnace body rising, insufficient, and the blast furnace bottom is not pressure-resistant and pressure-resistant, and achieve low manufacturing costs, accurate calculations, and appropriate selection effects
Active Publication Date: 2020-09-11
济南荣庆节能技术有限公司
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Problems solved by technology
[0009] The purpose and technical task of the present invention is to solve the problem that the existing blast furnace bottom is generally not pressure-resistant or the degree of pressure resistance is not enough, especially to provide a design scheme for the pressure resistance of the blast furnace bottom, so as to improve the pressure resistance level of the blast furnace bottom, thereby eliminating or completely Avoid problems such as "furnace bottom plate warping", "furnace bottom gas leakage", "furnace body rising" and other problems in blast furnaces, ensure the safety and longevity of blast furnaces, and improve the economic benefits of iron and steel enterprises
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[0030] Referring to the specification and drawings and in conjunction with specific embodiments, the blast furnace bottom pressure design scheme of the present invention will be described in detail below.
[0031] There are three types of specific embodiments of the blast furnace bottom pressure-resistant design scheme, one is a hemispherical furnace bottom design scheme; Shape, from the left view, right view, front view and rear view, it is elliptical, and 1 / 2 of it is the horizontal cross-section of its "flat circle") Spherical furnace bottom design scheme; The third is the rigid furnace bottom design scheme (The rigid furnace bottom is to use the huge bonding strength formed by the staggered welding of the "rib" and the furnace shell to pull the furnace shell so that it cannot rise, and to use the "rib" and the furnace bottom plate for large-area contact welding to make the "rib" "The supporting force is fully exerted, so that the furnace floor does not produce "bulging or ...
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The invention provides a blast furnace bottom pressure-resistant design scheme. The design scheme comprises a semi-spherical furnace bottom, a one-half flat circular spherical furnace bottom and a rigid furnace bottom, wherein the rigid furnace bottom further comprises five specific structural forms; the semi-spherical furnace bottom and the one-half flat circular spherical furnace bottom compriseannular supporting skirt plates (3), supporting ribs (18), heat dissipation windows (4), annular bases (5) and other basic components; for the rigid furnace bottom, the large binding strength formedby welding huge radial rib plates (11) or strip-shaped rib plates (15) and a blast furnace shell (1) in a staggered mode is utilized to tightly pull the blast furnace shell so that the blast furnace shell cannot rise, the rib plates are utilized to be welded to a furnace bottom plate in a large-area contact mode, so that the supporting force of the rib plates is brought into full play, and then the furnace bottom plate does not generate any deformation such as "bulging" and "upwarping"; and as long as the width and the thickness of the rib plates are accurately calculated and appropriately selected, and the rib plates are welded firmly, the pressure-resistant requirement of a blast furnace can be completely met, moreover, the manufacturing difficulty is low, the manufacturing cost is low,and implementation is easy.
Description
technical field [0001] The invention relates to the field of blast furnace bottoms, and is a design scheme for improving the pressure resistance level (capacity) of the blast furnace bottom. Background technique [0002] In China and even in the world, the blast furnaces used for ironmaking or ferroalloy production, regardless of their size, have not designed their bottom structures according to the pressure resistance standard. Therefore, many blast furnaces will experience "gas leakage at the bottom of the furnace" after a period of production. , "furnace body rising", "furnace bottom plate warping" and other problems, when the above problems occur, it generally needs to be treated from the outside. Although some problems (such as gas leakage problems) can be solved through external treatment, it is difficult to improve its durability. It is difficult to fundamentally solve the problem, so the present invention proposes a pressure-resistant design scheme for the bottom of ...
Claims
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IPC IPC(8): C21B7/02
CPCC21B7/02
Inventor 高新运高尚义毛雪芹
Owner 济南荣庆节能技术有限公司