CN208803104U - Integrated poured blast furnace crucibe - Google Patents

Integrated poured blast furnace crucibe Download PDF

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CN208803104U
CN208803104U CN201821487705.0U CN201821487705U CN208803104U CN 208803104 U CN208803104 U CN 208803104U CN 201821487705 U CN201821487705 U CN 201821487705U CN 208803104 U CN208803104 U CN 208803104U
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blast furnace
furnace
castable
utility
material layer
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孙赛阳
刘贯重
章荣会
邓乐锐
秦颖
刘晓峰
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Beijing United Rong Da Engineering Materials Ltd By Share Ltd
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Beijing United Rong Da Engineering Materials Ltd By Share Ltd
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Abstract

The utility model discloses a kind of integrated poured blast furnace crucibes, it is related to blast furnace crucibe technical field, the blast furnace crucibe includes cupola well cooling wall, air port, as foot area and tapping hole, it further include the furnace wall highly heat-conductive material layer and ceramic cup sidewalls material layer that side wall is set gradually from inside to outside, the furnace bottom highly heat-conductive material layer and ceramic cup body bottom material layer that furnace bottom is set gradually from the bottom to top, it is equipped with the prefabricated mud drum of tapping hole at the tapping hole, is equipped with tuyere zone buffer layer at the air port.The construction time that the utility model can save blast furnace lining maintenance and repair, reduce difficulty of construction and production and construction cost, reduce the loss that the frequent blowing out damping down maintenance bring operating rate of blast furnace of blast furnace reduces, greatly improve operating rate of blast furnace, material consumption is reduced, production efficiency and technical economic benefit are improved.

Description

Integrated poured blast furnace crucibe
Technical field
The utility model relates to blast furnace crucibe technical fields, and in particular to a kind of short construction period saves labour, structure Rationally reparation is fast, the cost of overhaul is low, integrated poured blast furnace crucibe and its casting construction method with long service life.
Background technique
The resistance to material of blast furnace crucibe includes thermally conductive resistance to material and ceramic cup two parts, and thermally conductive resistance to material is generally carbon brick, and ceramic cup is made Be protection carbon brick isolation molten iron, and traditional ceramic cup structure be build brick.Iron Works cupola well is using certain time Afterwards, the related portion of blast furnace can be led to because of the influence of the factors such as construction quality, production operation, material quality, especially strengthening smelting Different degrees of damage occurs for position, such as: blast furnace crucibe ceramic cup is caused to peel off, be led under the influence of high temperature corrosion, material corrode Basic function is caused to lose;Cupola well position causes furnace bottom heat flow rate per unit area to improve because brick fuel liner body deteriorates, peel off, be thinned;Iron oral area Position also will appear different degrees of liner and corrode, peel off, keep tapping hole in the shape of a trumpet, so as to cause iron mouth depth shallower, blocks up Mouth is difficult, and stemming dosage increases;It tuyere zone position can be different due to the abrasion of furnace charge, the corrosion of high temperature, the impact of thermal current There is fire resisting liner body and is thinned and irregular situation in degree;Blast-furnace shaft (containing bosh, furnace bosh), position was due to by material impact, air-flow It washes away, the effect of chemical erosion, hot corrode etc., inner lining refractory (such as refractory brick, spray paint) is thinned or falls off, cooling wall Damage, loses refrigerating function.
Above-mentioned damage will lead to the flushing and casting environmental degradation of blast furnace, and there are serious security risks, and directly affect height The safety in production and service life of furnace.
In order to ensure blast fumance be normally carried out and the safety of site environment, extend the life of the blast furnace, develop skill economy Benefit needs to repair the damaged part of blast furnace, and in recent years, the repairing construction of blast-furnace shaft is generally sprayed using semidry method Coating or wet spray material (or saying jetting material) are carried out integral spray maintenance or are repaired in blast furnace using the method for building refractory brick Lining is safeguarded.
When carrying out blast furnace lining reparation using spray paint (or jetting material), after spray paint is dry and firing, structure Consistency is lower, and fire resistance is lower, and poor with the conjugation of former blast furnace lining structure, after the completion of repairing when in use, resistance to Fiery performance is lower, is easy to happen and falls off, and service life is shorter.
When carrying out blast furnace lining reparation using the method for building refractory brick, built using the refractory wass of the corresponding trade mark, no But the old and new's faying face is difficult to handle, and the feature of density difference of the new masonry due to refractory wass in conjunction with refractory brick, makes After a period of time, gap easy to form causes refractory brick liner body combination not close, is prone to wear, occurs falling off, is even local It collapses, service life is shorter.
Moreover carbon brick masonry+ceramic cup brick masonry design pattern is built there are brickwork joint, molten iron is easily gradually seeped from brickwork joint Thoroughly, first ceramic cup brick is eaten away, and then corrodes carbon brick, until burning out cooling wall and cupola well leakage iron accident occurring;Intermediate repair, Larger using masonry way difficulty: one side residue and residual lining cleaning difficulty is big, and on the other hand building brick needs prefabricated, delivery cycle It is long, and building construction is slow, low efficiency.
Utility model content
The purpose of this utility model is to provide a kind of short construction period, saving labour, structurally reasonable, reparation is fast, inspection Integrated poured blast furnace crucibe and its casting construction method at low cost, with long service life are repaired, to solve in above-mentioned background technique ?.
To achieve the goals above, the utility model takes following technical solution:
The integrated poured blast furnace crucibe of one kind provided by the utility model, the blast furnace crucibe include cupola well cooling wall, air port, It further include the highly heat-conductive material layer and ceramic cup body material layer that side wall is set gradually from inside to outside, furnace bottom as foot area and tapping hole The highly heat-conductive material layer that sets gradually from the bottom to top and ceramic cup body material layer are equipped with the prefabricated mud of tapping hole at the tapping hole It wraps, tuyere zone buffer layer is equipped at the air port.
Blast furnace crucibe described in the utility model carries out integrated poured construction by following process step:
Step S110: heat-conducting layer castable and ceramic cup body castable are prepared;
Step S120: cupola well is repaired in cleaning;
Step S130: the method for pumping automatic flowing moulding by casting pouring furnace bottom heat-conducting layer castable from the bottom to top is taken;
Step S140: installation supporting furnace wall heat-conducting layer casting mold;
Step S150: the method for taking pumping automatic flowing moulding by casting is poured furnace wall heat-conducting layer castable from the bottom to top;
Step S160: after the dehydration of furnace wall heat-conducting layer castable, hardened forming, the casting of furnace wall heat-conducting layer is removed from the bottom to top Mold;
Step S170: the method for pumping automatic flowing moulding by casting cast ceramics bottom of cup castable from the bottom to top is taken;
Step S180: installation supporting ceramics cup sidewalls casting mold;
Step S190: the method for pumping automatic flowing moulding by casting cast ceramics cup sidewalls castable from the bottom to top is taken;
Step S200: after the dehydration of ceramic cup body castable, hardened forming, ceramic cup sidewalls casting is removed from the bottom to top Mold.
Further, the heat-conducting layer castable is made of one of C-SiC matter, full SiC matter or full C-material.
Further, the ceramic cup body castable is made by one or more of corundum, SiC matter or mullite At.
Further, clear before the method for taking pumping automatic flowing moulding by casting from the bottom to top pouring furnace bottom heat-conducting layer castable Manage cupola well.
Further, the cleaning cupola well specifically includes: after confirmation construction site reaches execution conditions, repairing cooling wall The coke in cupola well, slag iron are cleaned out using oxyacetylene metal-cutting, pneumatic pick or drill rod in gap, and the residue in tapping hole, air port is clear Reason is clean.
Further, the casting height of the side wall heat-conducting layer castable is lower than the height in air port, in ceramic cup sidewalls When castable is poured into air port, supporting air port mold is installed.
Further, in pouring furnace bottom heat-conducting layer castable and ceramic cup body bottom pouring material, layering is poured;? When being poured furnace wall heat-conducting layer castable and ceramic cup sidewalls castable, furnace wall heat-conducting layer casting mold and pottery are installed in layering respectively Porcelain cup body sidewall casting mold, laminated pouring.
Further, in pouring furnace bottom heat-conducting layer castable, divide 4 layers and be poured;In casting furnace wall heat-conducting layer casting When material, point 3 layers of supporting mold are poured.
Further, in cast ceramics bottom of cup castable, divide two layers and be poured;In cast ceramics cup sidewalls When castable, point 3 layers of supporting mold are poured.
The utility model is the utility model has the advantages that be integrally formed heat-conducting layer and ceramic cup body using flow pattern pouring type is pumped from, no Crack is easily formed, the service life of blast furnace crucibe is extended;High thermal conductivity castable and ceramic cup body castable are not required to make a reservation in advance, The supply of material is fast, short construction period, can greatly save labour and overall cost;Repair blast furnace in, protectability cleaning residual carbon brick, In view of the good gravity flow filling effect of castable, to the cleaning surface smoothness of remaining brick without strict demand, can further improve Remediation efficiency and the reduction cost of overhaul.
The additional aspect of the utility model and advantage will be set forth in part in the description, these will be from following description In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical solution of the utility model embodiment The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings Obtain other attached drawings.
Fig. 1 is blast furnace crucibe structure chart integrated poured described in the utility model embodiment.
Fig. 2 is after integrated poured blast furnace crucibe described in the utility model embodiment is cleared up before being poured heat-conducting layer castable Status diagram.
Fig. 3 is shape of the integrated poured blast furnace crucibe after pouring heat-conducting layer castable described in the utility model embodiment State schematic diagram.
Fig. 4 is integrated poured blast furnace crucibe described in the utility model embodiment after pouring ceramic cup body castable Status diagram.
Wherein: 1- cooling wall;2- tuyere zone buffer layer;The furnace wall 3- highly heat-conductive material layer;4- tapping hole;5- ceramic cup side The wall material bed of material;The air port 6-;7- is as foot area;8- furnace bottom highly heat-conductive material layer;9- ceramics cup body bottom material layer.
Specific embodiment
The embodiments of the present invention is described in detail below, the example of the embodiment is shown in the accompanying drawings, wherein Same or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Lead to below The embodiment for crossing attached drawing description is exemplary, and is only used for explaining the utility model, and cannot be construed to the utility model Limitation.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being used in the specification of the utility model Wording " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or Add other one or more features, integer, step, operation, element and/or their group.It should be understood that used herein " connection " or " coupling " may include being wirelessly connected or coupling, and the wording "and/or" used includes one or more associated Any cell for listing item and all combination.
It should be noted that in embodiment described in the utility model unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense, and may be a fixed connection, may be a detachable connection, or integral, can be Mechanical connection, is also possible to be electrically connected, can be and be directly connected to, be also possible to be indirectly connected with by intermediary, can be two The interaction relationship of connection or two elements inside a element, unless having specific limit.For those skilled in the art For member, concrete meaning of the above-mentioned term in the utility model embodiment can be understood as the case may be.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields.Also It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
The utility model for ease of understanding is with reference to the accompanying drawing further explained the utility model with specific embodiment Illustrate, and specific embodiment does not constitute the restriction to the utility model embodiment.
It should be appreciated by those skilled in the art that attached drawing is the schematic diagram of embodiment, the component in attached drawing is not necessarily Implement necessary to the utility model.
Embodiment
As shown in Figure 1, the utility model embodiment provides a kind of integrated poured blast furnace crucibe, which includes Cupola well cooling wall 1, air port 6, as foot area 7 and tapping hole 4, further include the furnace wall highly heat-conductive material that side wall is set gradually from inside to outside Layer 3 and ceramic cup sidewalls material layer 5, the furnace bottom highly heat-conductive material layer 8 and ceramic cup body bottom that furnace bottom is set gradually from the bottom to top Portion's material layer 9 is equipped with the prefabricated mud drum of tapping hole at the tapping hole 4, is equipped with tuyere zone buffer layer 2 at the air port 6.
The monolithic casting construction method of blast furnace crucibe provided by the embodiment of the utility model includes the following steps:
Step S110: heat-conducting layer castable and ceramic cup body castable are prepared.
Step S120: cupola well is repaired in cleaning.As shown in Fig. 2, for integrated poured blast furnace described in the utility model embodiment Cupola well cleared up before being poured heat-conducting layer castable after status diagram.
Step S130: the method for pumping automatic flowing moulding by casting pouring furnace bottom heat-conducting layer castable from the bottom to top is taken.
Step S140: installation supporting furnace wall heat-conducting layer casting mold.
Step S150: the method for taking pumping automatic flowing moulding by casting is poured furnace wall heat-conducting layer castable from the bottom to top.
Step S160: after the dehydration of furnace wall heat-conducting layer castable, hardened forming, the casting of furnace wall heat-conducting layer is removed from the bottom to top Mold.
As shown in figure 3, pouring heat-conducting layer casting for integrated poured blast furnace crucibe described in the utility model embodiment Status diagram after material.
Step S170: the method for pumping automatic flowing moulding by casting cast ceramics bottom of cup castable from the bottom to top is taken.
Step S180: installation supporting ceramics cup sidewalls casting mold.
Step S190: the method for pumping automatic flowing moulding by casting cast ceramics cup sidewalls castable from the bottom to top is taken.
Step S200: after the dehydration of ceramic cup body castable, hardened forming, ceramic cup sidewalls casting is removed from the bottom to top Mold.As shown in figure 4, pouring ceramic cup body castable for integrated poured blast furnace crucibe described in the utility model embodiment Status diagram afterwards.
In a specific embodiment of the utility model, the heat-conducting layer castable is by C-SiC matter, full SiC matter or full C One of material is made.
In practical applications, the making material of above-mentioned heat-conducting layer castable is not limited by above-mentioned material, this field skill Art personnel can be specifically chosen the making material of heat-conducting layer castable according to the actual situation.
In a specific embodiment of the utility model, it is described ceramics cup body castable by corundum, SiC matter or not Lai One or more of stone matter is made.
In practical applications, the making material of above-mentioned ceramic cup body castable is not limited by above-mentioned material, this field Technical staff can be specifically chosen the making material of ceramic cup body castable according to the actual situation.
In a specific embodiment of the utility model, cupola well is cleared up before the heat-conducting layer castable of pouring furnace bottom.
In a specific embodiment of the utility model, the cleaning cupola well is specifically included: being reached in confirmation construction site To after execution conditions, the coke in cupola well, slag iron are cleaned out using oxyacetylene metal-cutting, pneumatic pick or drill rod in repairing cooling wall gap, Residue in tapping hole, air port is cleaned out.As shown in Fig. 2, inside cupola well after cleaning, cooling wall surface neat and tidy, There is no crack, it is ensured that the casting quality of heat-conducting layer.
On the top of cupola well and shaft, setting safety guard net and Build Security platform, clear up cupola well, lining of shaft position Scum, residue (residual iron), slag, and residue, molten tumor, Weathered Material, oxidation material are cleaned out, loose resistance to material cleaning are done Only, cooling wall surface is then rinsed using high pressure water.
In a specific embodiment of the utility model, the casting height of the heat-conducting layer castable is lower than the height in air port Degree installs supporting air port mold when ceramic cup body castable is poured into air port.As shown in figure 4, pouring heat-conducting layer casting After material, after air-drying molding, the whole height of heat-conducting layer is lower than the height in air port.
In a specific embodiment of the utility model, when being poured heat-conducting layer castable and ceramic cup body castable, Layering installation heat-conducting layer casting mold and ceramic cup body castable mold respectively, laminated pouring.
In a specific embodiment of the utility model, when being poured heat-conducting layer castable, the 4 layers of supporting in furnace bottom part point Mold, layering are poured;3 layers of supporting mold of sidewall sections point, laminated pouring.
In practical applications, when above-mentioned heat-conducting layer castable is poured, delamination is not limited by the above-mentioned number of plies, ability The number of plies of heat-conducting layer casting mold can be rationally arranged in field technique personnel as the case may be.
In a specific embodiment of the utility model, in cast ceramics cup body castable, ceramic cup body substrate portion Divide point 2 layers of supporting mold, layering is poured;3 layers of supporting mold of ceramic cup sidewalls and air port band part point, layering are poured Note.
In practical applications, when above-mentioned ceramic cup body castable casting, delamination is not limited by the above-mentioned number of plies, this The number of plies of ceramic cup casting mold can be rationally arranged in field technical staff as the case may be.
Construction method described in the utility model embodiment is constructed in Specific construction according to blast furnace, is transported in conjunction with the blast furnace Blast furnace crucibe design scheme can be adjusted flexibly in row feature and actual requirement, early period;After scheme determines, two kinds of mould material dosages, Mold dosage, auxiliary material dosage etc. all determine.Only need strict implement arrangement and method for construction.Pacify from the bottom to top inside blast furnace Shove charge cylinder, shaft construction formwork/mold, the height of every layer of installation are 1500mm, and the height of actual installation is according to the standard of template The height of height or place position casting liner body determines.Template/mold can be used steel material, can also using wood materials, It can also be carried out using steel and wood materials alternating, collocation.
It is installed from the bottom to top by cupola well (containing tapping hole, tuyere zone) → bosh → furnace bosh → shaft position, stationary phase Corresponding template/mold;It carries out simultaneously integrated poured to completion, formation pour mass, and the height of pour mass and template installation Height basic synchronization.
Wherein, when tuyere zone will be poured into, special tuyere zone template/mold should be installed, tuyere zone template/mould is installed It should be noted that the fixation with furnace shell and cupola well template when tool, tuyere zone template/mold size should setting as close possible to tuyere zone Size is counted, tuyere zone template/mold generally uses steel plate to make, and the thickness of steel plate is not less than 3mm, can also use wood materials Production, when installing tuyere zone template/mold, it should be ensured that the thickness of tuyere zone castable liner body is not less than 200mm, or makes to be poured Expect the dimensional thickness as close possible to the initial tuyere zone of newly-built blast furnace.
Blast furnace crucibe, the installation of shaft template/mold: blast furnace crucibe, the non-casting area of shaft template/mold, Ying Caiyong Steel structure support and fixation;Blast furnace crucibe, shaft template/die casting face top should also use steel structure support and fixation, The stabilization and fixation for ensuring mold, must not there is offset phenomena in all senses.By suitable supporting element fixed form/mold, Ensure template/mold entirety stabilization, secured and density, it is ensured that the globality and density of casting and constructing liner body.
When installing blast furnace crucibe, shaft template/mold, should confirm: casting thickness, air port Strip casting thickness, shaft pour Thickness of material feeding etc. as close possible to the initial designs type of furnace size, even if castable liner body is as close possible to newly-built State of Blast Furnace The thickness of cylinder, lining of shaft refractory material.
When the hardness of liner body to be cast reaches requirement standard, form removal/mold and security protection system are simultaneously spontaneously dried And baking casting liner body is to complying with standard.
In conclusion the utility model embodiment is by using in the integrated poured blast furnace crucibe of mode of integrated moulding by casting Pressure resistance/flexural strength, loading are soft after lining, integrally formed heat-conducting layer and ceramic cup body have higher refractoriness, drying and burn Change temperature, bulk density, lower apparent porosity and reheating change rate, good antiscour, anti-erosion, wear-corrosion resistance, together When have good thermal shock resistance.Due to being integrally formed castable compact structure, and intensity is higher, and fire resistance is higher, whole Property greatly improve, so that the lining of shaft is become " the fire resisting liner body " of firm compact, service life greatly improves.The flowing of castable Material Property it is preferable, construct quick and convenient, quick-drying anti-explosion function admirable, demoulding time is short, can save blast furnace lining maintenance and repair Construction time reduces difficulty of construction and production and construction cost, reduces the frequent blowing out damping down maintenance bring blast furnace of blast furnace and makees The loss that industry rate reduces, substantially increases operating rate of blast furnace, reduces material consumption, raising production efficiency, develop skill economy Benefit.
Those of ordinary skill in the art will appreciate that: the component in device in the utility model embodiment can be according to reality The description for applying example is distributed in the device of embodiment, can also carry out corresponding change positioned at one or more different from the present embodiment In a device.The component of above-described embodiment can be merged into a component, can also be further split into multiple subassemblies.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should It is subject to the protection scope in claims.

Claims (3)

1. a kind of integrated poured blast furnace crucibe, including cupola well cooling wall (1), air port (6), as foot area (7) and tapping hole (4), The furnace wall highly heat-conductive material layer (3) and ceramic cup sidewalls material set gradually from inside to outside it is characterized by also including side wall Layer (5), furnace bottom highly heat-conductive material layer (8) that furnace bottom is set gradually from the bottom to top and ceramic cup body bottom material layer (9), it is described out It is equipped with the prefabricated mud drum of tapping hole at iron mouth (4), is equipped with tuyere zone buffer layer (2) at the air port (6).
2. integrated poured blast furnace crucibe according to claim 1, it is characterised in that: the heat-conducting layer castable is by C- One of SiC matter, full SiC matter or full C-material are made.
3. integrated poured blast furnace crucibe according to claim 1, it is characterised in that: the ceramics cup body castable is by rigid One or more of Yu Zhi, SiC matter or mullite are made.
CN201821487705.0U 2018-09-12 2018-09-12 Integrated poured blast furnace crucibe Active CN208803104U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108893570A (en) * 2018-09-12 2018-11-27 北京联合荣大工程材料股份有限公司 Integrated poured blast furnace crucibe and its casting construction method
CN113136469A (en) * 2021-03-11 2021-07-20 首钢集团有限公司 Blast furnace hearth

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108893570A (en) * 2018-09-12 2018-11-27 北京联合荣大工程材料股份有限公司 Integrated poured blast furnace crucibe and its casting construction method
CN113136469A (en) * 2021-03-11 2021-07-20 首钢集团有限公司 Blast furnace hearth

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