Knotting method for integral vacuum circulating degasification furnace vacuum chamber

A technology of vacuum circulation and vacuum chamber, which is applied in the field of the auxiliary working layer of vacuum circulation degassing furnace integral knotting vacuum chamber, can solve the problems that have not been seen, the increase of refining cost, the waste of labor and materials, etc., and achieve the reduction of masonry difficulty and structure Simple, safe to use and reliable results

Inactive Publication Date: 2008-05-14
ANGANG STEEL CO LTD
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Problems solved by technology

Therefore, it causes waste of labor and materials, and increases the refining cost.
And so far, there is no effective way to solve this problem and related materials and reports

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  • Knotting method for integral vacuum circulating degasification furnace vacuum chamber

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] As can be seen from the accompanying drawings, the present invention includes a heat insulating layer 4, a heat insulating layer 3, a working layer 1 and a knotting auxiliary working layer 2, and a refractory castable is knotted between the heat insulating layer 2 and the working layer 4 to form an integral vacuum chamber. Knot auxiliary working layer 3. The specific construction process and steps are:

[0015] In the construction of the heat insulation layer 4, in order to ensure the quality of the masonry, the heat insulation board after the masonry is ironed and flattened. According to the size of the vacuum chamber structural part body, the heat insulation board needs to be cut into a suitable size, usually cut into a size It is a square of 200×200mm, and then the cut heat insulation board is pasted on the structural part of the vacuum chamber body with ref...

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Abstract

The invention relates to a knotting method of a vacuum chamber of an integral vacuum circulating degasser, which knots refractory casting materials between a heat preservation layer and a working layer and forms a knotting auxiliary working layer of the integral vacuum chamber. Firstly, a heat preservation board is stuck on the body structure of the vacuum chamber through daub to form a heat insulating layer; secondly, vertical bricks of high alumina bricks are closely clung to the heat insulating layer so as to lay the heat preservation layer; at 50-80 mm away from the heat preservation layer, horizontal bricks of magnesia-chrome bricks are used for laying the working layer; Magnesia refractory casting materials are filled in a gap between the heat preservation layer and the working layer while in laying and are simultaneously vibrated and tamped so as to lead the heat preservation layer and the working layer to form an integral knotting liner. Since the integral knotting is adopted, the inspiration of a bottom groove body structure part of the vacuum chamber or bricklaying over standard are avoided, and the service life of the vacuum chamber is prolonged by more than one time; except for the working layer, the vacuum chamber can be used repeatedly without replacing the bottom groove, thus saving manpower and materials and reducing the application cost.

Description

technical field [0001] The invention belongs to the field of secondary refining equipment for steelmaking, and in particular relates to a method for integrally knotting an auxiliary working layer of a vacuum chamber in a vacuum circulation degassing furnace used for secondary refining. Background technique [0002] At present, domestic steelmaking plants have generally installed vacuum circulation degassing furnace refining equipment, and the inner wall of the bottom groove of the vacuum chamber of the vacuum circulation degassing furnace adopts a 3-4 layer masonry method, that is, different vacuum chambers are used in the vacuum chamber according to needs. The materials are used to build the heat insulation layer, heat preservation layer, auxiliary working layer and working layer. The working layer is seriously corroded due to direct contact with molten steel, so the thickness of the working layer is relatively large. When the working layer is erode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/10
Inventor 臧绍双邢贵彬白鹏马升
Owner ANGANG STEEL CO LTD
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