CN2301278Y

CN2301278Y - Integral casting liner for ladle wall

Info

Publication number: CN2301278Y
Application number: CN 97215132
Authority: CN
Inventors: 方善华; 史国敏; 汪锡章
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 1997-04-29
Filing date: 1997-04-29
Publication date: 1998-12-23
Anticipated expiration: 2007-04-29

Abstract

The utility model relates to an integral casting inner lining for steel ladle walls, which is composed of a permanent layer 1, an integral pouring layer 2, etc. The position which is in pouring materials and is adjacent to the permanent layer is provided with a masonry refractory brick layer 3, and the thickness of the refractory brick layer 3 is 25% to 35% of the integral thickness of a pouring material layer. The structure can save one third of corundum pouring materials, can reduce the cost of ladle inner linings, and can keep the use features and the life time of an original structure. The heat-insulating property of steel ladles is enhanced, encrustation and flaking off of the inner linings can be postponed, and simultaneously, that steel leaking of cracks of the pouring materials reaches the permanent layer can be prevented, and the use safety of the steel ladles is enhanced. The utility model has the advantages that unpacking is convenient, and the use of the permanent layer of the steel ladle walls is changed from once to many times.

Description

The integrated poured liner of ladle wall

The utility model relates to a kind of ladle liner structure, especially the integrated poured inner lining structure of ladle wall.

In the prior art, the inner lining structure of ladle is that the permanent layer of outside and inner pouring layer two parts are formed, and using at pouring layer just needed dismounting to keep in repair, and remaining pouring layer, permanent layer all will be built by laying bricks or stones again at about 1/3 o'clock, water material feeding and be generally corundum, cost is higher.Chinese patent application CN86210609 discloses a kind of " the concrete prefabricated ladle lining of oil immersion Al-Mg material ", be to make prefabricated pad by definite shape, size with oil immersion magnalium raw material, in ladle, build by laying bricks or stones then and form by required shape, this method only is applicable to small-sized ladle, and be difficult for working good between each prefabricated pad, the slit is big, promptly use pug to make amends for one's faults after, after molten steel corrodes, still have the slit.In recent years, the integrated poured structure of the many employings of large-scale ladle liner both domestic and external, has the labor productivity height, integrated cost is low, molten steel is polluted characteristics such as little, but baking from ladle, use, aspects such as repairing, integrated poured liner is owing to unavoidably can produce many irregular splittings in baking, varying length, width is from about 0～4mm, once use, molten steel promptly enters until permanent layer by big crackle, and permanent layer brick layer only is that 50mm is thick, it is dangerous to cause ladle to use, and, be lined with many cold steel, the difficulty of unpacking during repairing in whole because crackle and crust ooze steel.

The purpose of this utility model is intended to make improvements according to problems of the prior art, obtain the integrated poured inner lining structure of a kind of ladle wall, can reduce the cost of ladle integral pouring liner, improve the security that ladle uses, alleviate peeling off, damaging of liner.

For achieving the above object, the technical solution that the utility model proposes is:

The integrated poured liner of a kind of ladle wall is made up of permanent layer 1 and integrated poured layer 2 etc., and there is the fire brick layer 3 of building by laying bricks or stones at the position adjacent with permanent layer in watering material feeding.

The thickness of fire brick layer 3 is 25～35% of cast bed of material gross thickness.

Fire brick layer 3 upper ends be total height 3～5% water material feeding.

Accompanying drawing is the integrated poured inner lining structure schematic diagram of the utility model ladle wall.

Introduce an embodiment of the present utility model below in conjunction with effect:

The integrated poured inner lining structure of ladle wall that the utility model obtains is in permanent layer and waters and add one deck fire proof material brick between the material feeding.Referring to accompanying drawing, present embodiment is 300 tons of ladles, and 1 is the thick permanent layer of 50mm, and 2 is Al ₂O ₃Water material feeding, top is that 170mm is thick, and the bottom is that 210mm is thick, and the thickness of the slight expansion high-alumina brick 3 that the centre builds is 65mm, the best vacant total height 3～5% in the upper end of high-alumina brick, and top is slag line 4 on the magnesia carbon brick.This structure can be saved 1/3 corundum castable, and deduction is built the cost of slight expansion high-alumina brick by laying bricks or stones, still can reduce by tens0000 yuan of ladle liner costs, and keeps the handling characteristics and the life-span of original structure; Because watering the main component of material feeding is corundum, its volume density and thermal conductivity factor also can improve the heat-insulating property of ladle all greater than high-alumina brick, and the crust of liner peels off and can delay nearly 20 times; After building refractory brick by laying bricks or stones simultaneously, water oozing steel to this layer brick and can being blocked of material feeding crackle, improve the safety in utilization of ladle, unpack conveniently, wall permanent layer is used by once using to become repeatedly.

Claims

1. integrated poured liner of ladle wall, it comprises: permanent layer [1] and integrated poured layer [2], it is characterized in that: there is the fire brick layer [3] of building by laying bricks or stones at the position adjacent with permanent layer in watering material feeding.

2. the integrated poured liner of ladle wall according to claim 1 is characterized in that: the thickness of described fire brick layer [3] is 25～35% of cast bed of material gross thickness.

3. the integrated poured liner of ladle wall according to claim 1 and 2 is characterized in that: described fire brick layer [3] upper end for total height 3～5% water material feeding.