CN2479025Y

CN2479025Y - Copper core composite cooling wall for blast furnace

Info

Publication number: CN2479025Y
Application number: CN 01213883
Authority: CN
Inventors: 张勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-01-05
Filing date: 2001-01-05
Publication date: 2002-02-27
Anticipated expiration: 2011-01-05

Abstract

Provided is a composite cool-down wall with a brass core for a high furnace, comprising a casing body of the cool-down wall of steel, cast steel or cast iron, a cast copper core body, a water-passing cavity, a heat copper conductor and the like. The cast copper core body, the water-passing cavity and the heat copper conductor are packed inside the casing body of the cool-down wall. The heat copper conductor can extend to different portions of the casing body of the cool-down wall, which strengthens cool-down protection to the projections of hot surfaces of the casing body of the cool-down wall. The utility model keeps the advantages of the original cool-down wall, and develops the unique feature of brass, such as high heat transmission. The utility model has the advantages that design of the inner type is convenient in the operation of the high furnace, energy-saving effect is obvious, service life is prolonged and effect is better. In particular, the service life of the utilization of bosh portion is prolonged. Compared with the investment in a brass cool-down wall of the existing technology, the investment in the utility model is saved approximately to a half.

Description

The blast furnace compound cooling stave of copper core

The utility model belongs to technical field of metallurgical equipment, relates to blast furnace stove internal cooling the equipment energy-conservation and long-livedization structure of (comprising cupola well, bosh, the furnace bosh of blast furnace, the cooling stave of shaft middle and lower part) particularly.

Because soon, body of heater middle and lower part, furnace bosh, the especially interior bricking of the stove of bosh position protection cooling apparatus just damaged substantially, protect body of heater and keep blast furnace operating by cooling apparatus fully after blast furnace came into operation.For making the blast furnace can be long-lived, aspect cooling apparatus, adopted many technology, its medium cast iron, cast steel cooling wall are the cooling apparatuss that generally adopts, copper cooling wall has also begun to promote the use of on blast furnace.In the prior art, the cooling stave that is used for the cooling apparatus at each position of blast furnace has: cast-iron cooling wall, cast steel cooling wall, copper cooling wall.

The cast-iron cooling wall investment is less, and the application time on blast furnace is the longest, also the most general.Though used the hemisphere spheroidal graphite cast iron material of partly wriggling now, owing to the easy carburizing when the casting of the water pipe in it becomes fragile, be affected work-ing life.In addition, the thermal shock resistance of the cooling stave matrix of cast iron quality is relatively poor relatively, is destroyed by thermal stresses easily.For this reason, people have used cast steel cooling wall.

Cast steel cooling wall is for the cooling stave of cast iron quality, and the thermal shock resistance of its matrix improves relatively, and thermal stresses weakens relatively to the destruction of cooling stave matrix.But the easy carburizing and the problem that becomes fragile does not thoroughly solve when casting of the water pipe in it, and because the restriction of its structure, the cooling intensity relative deficiency at the outstanding position of limit, angle and other hot side is still destroyed by thermal stresses easily.In order to solve thermal stresses, the chemical erosion destruction to cooling stave, people have used copper cooling wall.

Copper cooling wall is for the cooling stave of steel, iron material matter, because its good heat transfer performance has been avoided the destruction of thermal stresses to the cooling stave matrix, chemical erosion has not almost had implantation yet, and its work-ing life is longer relatively.But the copper cooling wall heating surface adopts tamping unshape refractory in simple oat tail groove structure, the dovetail-indent; wall is smooth; be difficult for dross to form protection lining body; the furnace charge that the slag crust that leans on strong cooling to form more easily is lowered by impacts, collides and comes off; wall body copper metal is often exposed, and bosh position copper metallic matrix directly contacts with the high temperature sludge flowing molten iron because of there is certain elevation angle its use location, easily by melting loss; other position then thermal resistance diminishes, and blast furnace heat energy loss and working cost strengthen.And the investment of its cooling apparatus of the same area exceeds several times than the cooling stave of steel, iron material matter.

The purpose of this utility model is exactly at the problems referred to above, it is moderate relatively to propose a kind of investment, the thermal resistance of wall body own is big, change its configuration design, help the compound cooling wall structure pattern of copper core of blast furnace lines design according to the difference of using the position, thereby reaches the long-lived and energy-conservation effect than the structural shape of prior art.

The purpose of this utility model realizes in the following manner, but copper core cooling stave comprises the intravital heat conduction copper body tamping unshape refractory of crossing the water cavity, fusing with core body of steel or cast steel or cast-iron cooling wall housing, cast copper core body, core or the filler groove of edge brick.It is characterized in that: steel or cast steel or cast-iron cooling wall housing are by means manufacturings such as casting, machinings, its inner surface configuration is to guarantee the cast copper core body and can be cast for prerequisite with heat conduction copper body that core body fuses, and according to the design and the heat transfer needs of water cavity are suitably adjusted excessively, dwindle the formed cavity volume of internal surface most possibly, save the consumption of copper, its external surface shape then uses the position difference to change according to it, can be the light face as the cupola well position, the hot side at bosh and other position can be with groove to be used for tamping unshape refractory or edge brick; The cast copper core body, in established the water cavity, external water pipe is filled among the cooling stave housing by cast with heat conduction copper body; Cross the water cavity, can be designed to single or multiplely as required, be connected with the exterior cooling water system by external water pipe, to satisfy the heat exchange needs; Heat conduction copper body can extend to the different position of cooling stave housing as required, and the high thermal conductivity that utilizes copper is to strengthen the cooling protection to the outstanding position of its cooling stave housing hot side.

The utility model is described in further detail below in conjunction with Figure of description:

Fig. 1: cooling stave side cutaway view.

Fig. 2: cooling stave top view sectional view.

The blast furnace of the utility model with copper core cooling stave by the heat conduction copper body 1 that fuses with core body, cooling stave housing 2, cross water cavity 3, cast copper core body 4, filler groove 5 and form.

Heat conduction copper body 1; fuse with core body; as required; extend to the different position of cooling stave housing; the high thermal conductivity that utilizes copper to be strengthening the cooling protection to the outstanding position of its cooling stave housing hot side, thus avoided steel, iron material matter the outstanding position of cooling stave limit, angle and other hot side the cooling intensity relative deficiency and easily by thermal stresses institute destructive defective.In addition, its shaped design can guarantee that housing 2 is connected with the effective of cast copper core body 4.

Cooling stave housing 2, by steel or cast steel or cast-iron cooling wall housing by casting, means manufacturings such as machining form, its inner surface configuration is to guarantee cast copper core body 4 and can be cast for prerequisite with heat conduction copper body 1 that core body fuses, and according to the design and the heat transfer needs of water cavity are suitably adjusted excessively, dwindle the formed cavity volume of internal surface most possibly, to save the consumption of copper, its external surface shape then uses the position difference to change (but being illustrated as the external surface shape that hot side has the groove 5 of tamping unshape refractory or edge brick) according to it, both increased thermal resistance, avoided lower copper direct of high temperature sludge flowing molten iron and fusing point to contact again, not only energy-conservation but also saved the consumption of copper.

The intravital water cavity 3 of crossing of core, utilize copper pipe processing, welding forming, adopt and bury underground in advance, wrapped up by cast copper core body 4 by cast, be connected with the exterior cooling water system by external water pipe, utilized the good heat conduction and the extension performance of copper, guaranteed to cross not being destroyed of water cavity 3, and can spread out of heat quickly, lower working temperature be arranged to guarantee cast copper core body 4.

Cast copper core body 4 and the heat conduction copper body 1 that fuses with core body are filled in by cast among the formed cavity of cooling stave housing 2 internal surfaces, with cooling stave housing 2, cross water cavity 3 and form an integral body.Heat conduction copper body 1 and cast copper core body are passed to water body with the heat that cooling stave housing 2 imports into rapidly, have lower and uniform working temperature to guarantee cooling stave housing 2 internal surfaces, have improved the execution of thermal stresses to the cooling stave housing 2 of steel, iron material matter.

The utility model owing to kept the flowing molten iron of anti-slag corrode and the bigger advantage of thermal resistance of the traditional cast iron or the cast steel cooling wall of prior art, has utilized the high heat transfer rate of copper again compared with the prior art, and itself is prolonged in the life-span, energy-saving effect improves.Especially bosh position, because the singularity of its use location, after bricking damaged in the stove of protection cooling apparatus, the high temperature sludge flowing molten iron did not directly contact with the lower copper of fusing point, relies on slag crust protection preferably, its life-span prolonged, energy-saving effect also is improved.

The utility model, the position is different to be changed with the design needs owing to external surface shape can be used according to it, helps the planner when utilizing all kinds of cooling apparatus, can select easily, and guarantee to have the interior type of blast furnace operating preferably.

All kinds of cooling walls of the utility model and prior art relatively have longer service life, energy-conservation, joint Economize the remarkable advantage of copper resource, and help to keep the preferably interior type of blast furnace operating, reduce blast furnace and produce This. Save nearly half investment than the copper cooling wall of prior art.

Claims

1. blast furnace is with copper core compound cooling stave, comprise cooling stave housing, cast copper core body, core intravital cross the water cavity, with heat conduction copper body and filler groove that core body fuses, it is characterized in that:

(1) cast copper core body and the heat conduction copper body that fuses with core body are filled among the formed cavity of cooling stave shell inner surface by cast, with the cooling stave housing, cross the water cavity and form an integral body.

(2) cooling stave shell inner surface and the outside surface of crossing the water cavity form the cavity that a cast copper core body and heat conduction copper body can be poured into a mould.

According to the said blast furnace of claim 1 with the compound cooling stave of copper core, it is characterized in that described cooling stave housing is formed by means manufacturings such as casting, machinings by steel or cast steel or the cold wall housing of cast iron.

3. according to claim 1 or the 2 said blast furnaces compound cooling staves of copper core, it is characterized in that the cooling stave housing outer surface is the profile of cooling stave, can make the cooling stave of band groove, also can cancel groove, make light face cooling stave.

4. according to the said blast furnace of the claim 1 compound cooling stave of copper core, it is characterized in that the heat conduction copper body that fuses with core body can be arranged into each place in the cooling stave housing as required.