CN106435073B - A kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick - Google Patents

A kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick Download PDF

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Publication number
CN106435073B
CN106435073B CN201611001478.1A CN201611001478A CN106435073B CN 106435073 B CN106435073 B CN 106435073B CN 201611001478 A CN201611001478 A CN 201611001478A CN 106435073 B CN106435073 B CN 106435073B
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blast furnace
mold
shaft
castable
template
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CN106435073A (en
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许树斌
柳萌
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WUHAN HONGCHENG METALLURGICAL MATERIAL CO Ltd
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WUHAN HONGCHENG METALLURGICAL MATERIAL CO Ltd
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B7/00Blast furnaces
    • C21B7/04Blast furnaces with special refractories
    • C21B7/06Linings for furnaces

Abstract

The invention discloses a kind of blast furnace lining monolithic casting construction methods for substituting spray paint and refractory brick, are related to blast furnace reparation and newly-built field, include the following steps:It determines blast furnace crucibe, shaft damaged part, clears up cupola well and shaft;Castable is prepared, high-strength Ultramicro-powder combined corundum SiC matter castable, high-strength Ultramicro-powder combined corundum SiC matter castable, high-strength Ultramicro-powder combination high alumina SiC matter castable and high-strength Ultramicro-powder combination high alumina mullite castable is respectively adopted in cupola well, bosh, furnace bosh and restoration of lower stack, upper shaft;Installation form/mold from the bottom to top inside blast furnace;Castable is poured into a mould from the bottom to top using vibrations or gravity flow pouring forming method, forms cast liner body;From top to bottom remove cast template/mold;After liner body hardness to be cast reaches requirement, form removal/mold, and through spontaneously drying and toasting.The present invention accesses that structure is dense, and fire resistance is higher, the longer blast furnace lining liner body of service life.

Description

A kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick
Technical field
The present invention relates to blast furnace reparation and newly-built fields, and in particular to a kind of blast furnace lining for substituting spray paint and refractory brick Monolithic casting construction method.
Background technology
The positions such as Iron Works cupola well (containing tapping hole, tuyere zone), shaft (containing bosh, furnace bosh) are in production a period of 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, especially material quality, strengthening smelting Different degrees of damage occurs for position:A, 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;B, cupola well position causes furnace bottom heat flow rate per unit area to improve because brick fuel liner body deteriorates, peel off, be thinned;C, Tie Kou Position also will appear different degrees of liner and corrode, peel off, and make tapping hole in bell mouth shape, so as to cause iron mouth depth shallower, It blocks up difficulty, the increase of stemming dosage;D, tuyere zone position, due to the abrasion of furnace charge, the corrosion of high temperature, the impact of thermal current, meeting There is fire resisting liner body in various degree to be thinned and irregular situation;E, blast-furnace shaft (containing bosh, furnace bosh) position by material due to being rushed It hits, airflow scouring, the effect of chemical erosion, hot corrode etc., inner lining refractory (such as refractory brick, spray paint) is thinned or de- It falls, cooling wall damage loses refrigerating function.
Above-mentioned damage can lead to the flushing and casting environmental degradation of blast furnace, there are serious security risk, and directly affect height The safety in production of stove and service life.
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 by laying bricks or stones Lining is safeguarded.
When carrying out blast furnace lining reparation using spray paint (or jetting material), after spray paint drying and firing, structure Consistency is relatively low, and fire resistance is relatively low, and poor with the conjugation of former blast furnace lining structure, after the completion of repairing when in use, resistance to Fiery performance is relatively low, easily falls off, and service life is shorter.
Although the technical indicator of presently disclosed spray paint is higher, when actually detected, substantially using cast What forming method was detected, for spray paint (material containing wet injection) due to taking spraying application, practical index compares theory index Want manyly low.
Moreover it when carrying out blast furnace lining reparation using the method for building refractory brick by laying bricks or stones, is grouted using the fire clay of the corresponding trade mark Build, not only the old and new's faying face is difficult to handle, and new masonry due to the density that refractory wass is combined with refractory brick it is poor the characteristics of, In use for some time, gap is easily formed, causes refractory brick liner body combination not close, it is easy to wear, occur coming off, even Partial collapse, service life are shorter.
Invention content
For defect in the prior art, the purpose of the present invention is to provide a kind of spray paint and refractory brick of substituting Blast furnace lining monolithic casting construction method, can obtain that structure is dense, and fire resistance is higher after reparation, service life is longer Blast furnace lining liner body.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick, includes the following steps:
S1, the cupola well for determining blast furnace, shaft damaged part, the cupola well include tapping hole and tuyere zone, the shaft Including bosh and furnace bosh, cupola well and shaft are cleared up;
S2, castable is prepared:Wherein, high-strength ultra micro is respectively adopted in cupola well, bosh, furnace bosh and restoration of lower stack, upper shaft Powder combined corundum-SiC matter castable, high-strength Ultramicro-powder combined corundum-SiC matter castable, high-strength Ultramicro-powder combination high alumina-SiC Matter castable and high-strength Ultramicro-powder combination high alumina-mullite castable;
S3, model sheetinstallat:Cupola well, shaft construction formwork/mold are installed from the bottom to top inside blast furnace;
It is S4, integrated poured:Vibrations or the molding method of gravity flow pouring is taken to pour into a mould castable from the bottom to top, forms cast lining Body;
S5, demoulding:Cast template/mold and other structural members, support element are from top to bottom removed, so that castable takes off Water, hardening;
S6, natural drying and baking:After the hardness of liner body to be cast reaches requirement, form removal/mold and through naturally dry Dry and baking, makes cast liner body slough moisture, reaches certain intensity.
Based on the above technical solution, the reparation thickness at the cupola well position is not less than 200mm;The shaft position Reparation thickness not less than 100mm or cause the size restoration of blast furnace lining to identical with initial designs size and the type of furnace.
Based on the above technical solution, the cupola well include tapping hole and tuyere zone, the shaft include bosh and Furnace bosh, cleaning cupola well and shaft specifically include following steps in the step S1:Reach safe construction item in confirmation construction site It is using the equipment such as oxyacetylene metal-cutting, pneumatic pick, drill rod or tool, the coke in cupola well and slag iron mixture complete liquidation is clean after part, it will Cupola well, tapping hole, tuyere zone inner wall residual iron, residue clean out, cupola well position should be cleared up to brick fuel position, until to be repaired The brick fuel at position exposes;Or cleaning till death iron layer with upper bit;
Using the equipment such as pneumatic pick, drill rod or tool, residual iron, the residue of the inner lining surface of blast-furnace shaft are cleaned out, and It by the refractory material of loosening, including refractory brick and spray paint, cleans out, until the fire resisting liner body and cooling wall of repairing position are shown Expose.
Based on the above technical solution, it is further comprising the steps of before the step S3:By Blast Furnace Bottom or ladle heel Layer is smooth with upper bit processing, and before blast furnace lining template/mold is installed, the blast furnace lining includes cupola well and shaft, in height Inner lining of furnace material surface smears one layer of antioxidizing paint;Meanwhile one is smeared against the one side of cast liner body in template/mould inner wall The miscella of layer, miscella are butter and used oil according to 2:1 ratio is made.
Based on the above technical solution, when being poured into tuyere zone, installation tuyere zone template/mold installs air port It should be noted that furnace shell and cupola well template are fixed during band template/mold, the thickness of tuyere zone castable liner body is not less than 200mm, i.e. root Deteriorate degree according to tuyere zone, castable liner body is made to restore to the size or thickness of the initial type of furnace of newly-built blast furnace.
Based on the above technical solution, the tuyere zone tool/die be made using thickness not less than 3mm steel plates, Or it is made of wood materials.
Based on the above technical solution, cupola well, shaft construction formwork/or mould are installed from the bottom to top in the step S3 During tool, the height installed every time is 1~3m;The practical height installed every time should be according to template/mold calibrated altitude or place The height of position cast liner body determines;Steel material can be used in template/mold, and wood materials can also be used;Steel can also be used Matter and wood materials alternating, collocation carry out.
Based on the above technical solution, cupola well, shaft construction formwork/mold are installed from the bottom to top in the step S3 When, the height installed every time is usually 1.5m.
Based on the above technical solution, the installation blast furnace crucibe, shaft template/mold are further comprising the steps of: In the non-casting area of blast furnace crucibe shaft template/mold, support element is set using steel construction, is used to support mold.
Based on the above technical solution, the installation blast furnace crucibe, shaft template/mold are further comprising the steps of: On the top in blast furnace crucibe, shaft die casting face, support element is set, is used to support template/mold.
Compared with prior art, the advantage of the invention is that:
(1) the blast furnace lining monolithic casting construction method of a kind of replacement spray paint of the invention and refractory brick, using cast Expect integrated poured blast furnace crucibe (containing tapping hole, tuyere zone), shaft (containing bosh, furnace bosh) liner, compared to spray paint, refractory brick, With pressure resistance/flexural strength, refractoriness under load, bulk density after higher refractoriness, drying and burning, relatively low apparent porosity With reheating change rate, good antiscour, anti-erosion, wear-corrosion resistance, while there is good thermal shock resistance.It detects and real Border is proved using result:All technical performance indexs of castable are superior to spray paint and refractory brick, since castable structure causes It is close, and intensity is higher, fire resistance is higher, and globality greatly improves, and the lining of shaft is made to become " the fire resisting liner body " of firm compact, is made It is greatly improved with the service life.
(2) the blast furnace lining monolithic casting construction method of a kind of replacement spray paint of the invention and refractory brick, castable material Liquid flowability is preferable, construction it is quick and convenient, quick-drying anti-explosion function admirable, demoulding time is short, can save blast furnace lining safeguard and The construction time of reparation.And castable, compared to spray paint, castable baking is without particular/special requirement, by normal before normal blast furnace opening Baking regime perform, appropriate adjustment is only made according to castable dosage and cast liner body thickness, it is difficult to reduce construction Degree.
(3) the blast furnace lining monolithic casting construction method of a kind of replacement spray paint of the invention and refractory brick, with existing skill " blast-furnace shaft liner " is made in art, is compared in particular by " concave-convex type ", " mosaic " fire resisting brick manufacturing process, technics comparing Simply, production and construction cost is reduced.
(4) the blast furnace lining monolithic casting construction method of a kind of replacement spray paint of the invention and refractory brick, obtained height The globality of the stove lining of shaft greatly improves, and has the space of bigger in terms of the planform design, processing of blast-furnace shaft liner, More importantly since the globality of cast liner body increases, the service life of blast-furnace shaft fire resisting liner body is greatly improved, so as to The furnace life of blast furnace is greatly improved, while reduces the loss that the operating rate of blast furnace that the frequent blowing out damping down maintenance of blast furnace is brought reduces, Operating rate of blast furnace is greatly improved, raising production efficiency, develop skill economic benefit.
(5) the blast furnace lining monolithic casting construction method of a kind of replacement spray paint of the invention and refractory brick, avoids spray The rebound of coating, on the one hand, reduce material consumption, resource is fully used, and reduces maintenance cost;It is another then, due to not having There is rebound to expect, reduce the clearance time of rebound material, so as to shorten the repair duration, improve the operating rate of blast furnace.
Specific embodiment
The present invention is described in further detail below in conjunction with subordinate list and case study on implementation.
Ginseng is shown in Table 1, and case study on implementation of the present invention provides a kind of replacement spray paint and the blast furnace lining of refractory brick integrally pours Construction method is noted, is included the following steps:
S1, the cupola well for determining blast furnace, shaft damaged part, cupola well include tapping hole and tuyere zone, shaft include bosh And furnace bosh:The position and erosion condition that confirmation blast furnace crucibe, shaft are etched;Confirm the depth of blast furnace crucibe, shaft damaged part Degree, area and volume;Meanwhile confirm whether blast furnace crucibe, the operating status of shaft are good, it is repaiied according to the confirmation of whole condition in damaged Multiple and arrangement and method for construction.
S2, the cupola well and shaft for clearing up blast furnace, and security protection system is installed:Blast furnace staying (blowing out) is carried out first, is made Blast furnace crucibe, the temperature of shaft position construction area, gas concentration are obtained in safe range, i.e., temperature is less than 35 DEG C, and coal gas is dense Degree is less than 50ppm.
Setting safety guard net and Build Security platform on the top of cupola well and shaft, cleaning cupola well, lining of shaft position Scum, residue (residual iron), slag, and residue, molten knurl, Weathered Material, oxidation material are cleaned out, loose resistance to material cleaning are done Only, high pressure water washing inner lining surface is then used.
It replaces and repairs the cooling wall being damaged in blast-furnace shaft, to ensure that the normal use of wind postcooling system is answered in blow-on.
Wherein, clear up cupola well (containing tapping hole, tuyere zone) the specific steps are:Using equipment such as gas cutting, pneumatic pick, drill rods or Tool, the coke in cupola well and slag iron mixture complete liquidation is clean, by cupola well, tapping hole, tuyere zone inner wall residual iron, residual Slag is cleaned out, and cupola well position should be cleared up to brick fuel and (iron layer till death at least be cleared up, when condition is permitted, preferably by ladle heel layer whole Clean up) position, until the brick fuel at position to be repaired exposes, convenient for castable and the close knot of cupola well position refractory material During contract, it is impossible to dispose original cupola well (or furnace bottom) brick fuel.
Clear up shaft position inner lining surface the specific steps are:It, will be high using equipment or tools such as pneumatic pick (electric drill), drill rods Residual iron, the residue on stove lining of shaft surface are cleaned out, and refractory material (containing refractory brick, spray paint etc.) cleaning of loosening is dry Only, until the fire resisting liner body for repairing position reveals, convenient for castable and lining of shaft refractory material and the tight of facility is cooled down Close combination.
S3, castable is prepared, wherein, cupola well (tapping hole, tuyere zone) is poured using high-strength Ultramicro-powder combined corundum-SiC matter Material feeding, bosh position use high-strength Ultramicro-powder combined corundum-SiC matter castables, and furnace bosh and restoration of lower stack use high-strength Ultramicro-powder With reference to high alumina-SiC matter castables, upper shaft uses high-strength Ultramicro-powder combination high alumina-mullite castable.
It is S4, Blast Furnace Bottom (ladle heel layer top) processing is smooth, and on the inner lining material surface at blast furnace crucibe, shaft position One layer of antioxidizing paint is smeared, in favor of combining closely for castable and refractory material, meanwhile, it demoulds for convenience, installation is high Before stove shaft template/mold, template/mould inner wall should be smeared one layer of (butter:Used oil=2:1) miscella.
S5, cupola well, shaft construction formwork/mold are installed from the bottom to top inside blast furnace, the height installed every time is 1~3m (being 1.5m in the present embodiment), the height of actual installation are true according to the height of the calibrated altitude of template or place position cast liner body It is fixed.Template/mold can be used steel material, can also use wood materials, can also use steel and wood materials alternating, take With progress.
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 is carried out at the same time integrated poured to completion, formation cast liner body, and the height of cast liner body and template peace The height basic synchronization of dress;The reparation thickness at blast furnace crucibe position, the reparation thickness at shaft position should be as close possible to initially setting The size of furnace lining is counted, to ensure the recovery of the initial type of furnace.
Wherein, when tuyere zone will be poured into, special tuyere zone template/mold, installation tuyere zone template/mould should be installed It should be noted that the fixation with furnace shell and cupola well template during tool, the size of tuyere zone template/mold should setting as close possible to tuyere zone Size is counted, tuyere zone template/mold is generally made of steel plate, and the thickness of steel plate can also use wood materials not less than 3mm It makes, when tuyere zone template/mold is installed, it should be ensured that the thickness of tuyere zone castable liner body is not less than 200mm or makes cast Expect dimensional thickness of the liner body as close possible to the initial tuyere zone of newly-built blast furnace.
The installation of blast furnace crucibe, shaft template/mold:The non-casting area of blast furnace crucibe, shaft template/mold, should use Steel structure support and fixation;Blast furnace crucibe, the top in shaft template/die casting face should also use steel structure support and fixation, Ensure stabilization and the fixation of mold, there must not be offset phenomena in all senses.By suitable support element fixed form/mold, Ensure the stabilization of template/mold entirety, secured and density, it is ensured that the globality and density of casting and constructing liner body.
In this example, when installing blast furnace crucibe, shaft template/mold, it should confirm:Cupola well cast thickness, tuyere zone pour Note thickness, shaft castable thickness etc. as close possible to the initial designs type of furnace size, even if castable liner body connects as far as possible The thickness of nearly newly-built blast furnace crucibe, lining of shaft refractory material.
Hardness when reaching requirement standard of S6, liner body to be cast, form removal/mold and security protection system are simultaneously done naturally Dry and baking cast liner body is to complying with standard.
The comparison of castable and spray paint technical performance and using effect:
1 castable of table safeguards blast-furnace shaft lining technique Economic contrast with spray paint
According to table 1:Compared with spray paint, castable is small, resistance to intensity height, good integrity, reheating linear change rate on reheating Performance of flushing is excellent, without rebound, service life is long the characteristics of, techno-economic effect is notable.
Method using the present invention carries out integrated poured construction and reparation to blast furnace crucibe, shaft using castable, obtains Cast liner body have higher drying and heat treatment structure intensity, relatively low Linear change rate, good wearability and antiscour Performance, high temperature hot performance is good, and refractoriness under load is high, while has good thermal shock resistance, heat resistanceheat resistant airflow scouring performance, There is good wearability to ore, coke etc. in stove, material liquid flowability is good, quick-drying anti-explosion function admirable, and demoulding time is short etc. Advantage.
The present invention is damaged by the fault of construction to blast furnace crucibe, lining of shaft refractory material and Wear mechanism, cooling wall The origin cause of formation carries out deep analysis, and combines theoretical research and the application practice of castable, while by spray paint (either half Dry spraying or wet injection material) and blast furnace lining refractory brick (brick of ceramic cup containing blast furnace crucibe) combined with high-strength Ultramicro-powder The comparison of serial castable (hereinafter referred to as castable) performance indicator, it is known that, castable has higher refractoriness, drying and burning Pressure resistance/flexural strength, refractoriness under load, bulk density afterwards, relatively low apparent porosity and reheating linear change rate on reheating, good anti-impact Brush, anti-erosion, wear-corrosion resistance, overall performance is excellent, especially with good thermal shock resistance, it may be said that the institute of castable There is technical performance index to be superior to spray paint and refractory brick.
In the following, by a kind of specific case study on implementation, the present invention will be described in detail.
The use of object is certain iron-smelter 1750m3Blast furnace, which has run more than 5 years, more than the blast-furnace bosh is thin-walled Lining Design, tuyere combined brick use silicon nitride combined silicon carbide brick, and cupola well takes big carbon block directly to build by laying bricks or stones, not using ceramic cup Design.
By site inspection, which loses substantially because corroding, peeling off Due function, cupola well brick fuel liner body because of the deteriorating of high-temperature molten material, denude, occur peeling off, thinning phenomenon, cause furnace bottom hot Intensity of flow is higher (cupola well brick fuel depth of erosion up to 200~300mm);Tapping hole position also has different degrees of close to cupola well position It corrodes, peeling phenomenon;Tuyere zone fire resisting liner body occurs being thinned or uneven because high temperature corrode, furnace charge abrasion, high pressure draught wash away Phenomenon (tuyere zone lower part depth of erosion reaches 220mm);Shaft (containing bosh, furnace bosh position) fire resisting liner body is because of high temperature corrode, furnace charge Abrasion, high pressure draught impact, exist be thinned or non-uniform phenomenon, blast-furnace shaft liner corrode, peel off it is more serious, in shaft Lining protection silicon nitride combined silicon carbide brick (bosh lower part), phosphorus leaching leck brick are peeled off and are finished substantially, cooling wall inlaid brick (nitrogen SiClx silicon carbide matter) it also corrodes serious (corroding thickness up to 1/3~1/2).
More than tuyere combined brick 2 sections of cooling wall inlaid bricks still exist, but are protected from third section cooling wall to the liner of throat armour Brick substantially completely comes off, and cooling wall dovetail groove has appeared, especially the 4th section of cooling wall be damaged it is serious there are seepy questions, lost Remove normal refrigerating function (this section of cooling wall is all replaced before integrated poured construction operation);Tuyere combined brick region, in Heart line combination of the above brick corrodes damage seriously, and the following modular tile of center line has part and damages and loosen;Tuyere zone lower part cupola well Brick fuel, tuyere combined brick lower edge to following 1.5m regions, brick fuel diametrically depth of erosion up to 200~300mm.There are certain Security risk.
2 blast furnace crucibe of table, shaft recovery project Specific construction timetable
It is basic to restore the initial designs type of furnace after method using the present invention carries out construction reparation, through integrated poured, naturally dry Dry, baking, cast liner body intensity is high, good integrity.Without layering scaling defects, be conducive to blast furnace normal operation, it is ensured that in blast furnace The globality of lining refractories substantially reduces the denuding of the resistance to material of blast furnace lining, damaged, peeling phenomenon, effectively extends making for blast furnace With the service life, there is higher Technological Economy value and benefit.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as the protection of the present invention Within the scope of.The content not being described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.

Claims (10)

1. a kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick, which is characterized in that including following step Suddenly:
S1, the damaged part for determining blast furnace crucibe, shaft, the cupola well include tapping hole and tuyere zone, and the shaft includes stove Abdomen and furnace bosh clear up cupola well and shaft;
S2, castable is prepared:Wherein, high-strength Ultramicro-powder knot is respectively adopted in cupola well, bosh, furnace bosh and restoration of lower stack, upper shaft Corundum-SiC matter castable, high-strength Ultramicro-powder combined corundum-SiC matter castable, high-strength Ultramicro-powder combination high alumina-SiC matter is closed to pour Material feeding and high-strength Ultramicro-powder combination high alumina-mullite castable;
S3, model sheetinstallat:Cupola well, shaft construction formwork/mold are installed from the bottom to top inside blast furnace;
It is S4, integrated poured:Vibrations or the molding method of gravity flow pouring is taken to pour into a mould castable from the bottom to top, forms cast liner body;
S5, demoulding:Cast template/mold and other structural members, support element are from top to bottom removed, in favor of castable dehydration, firmly Change;
S6, natural drying and baking:After the hardness of liner body to be cast reaches requirement, form removal/mold and through spontaneously dry and Baking, makes cast liner body slough moisture, reaches certain intensity.
2. a kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick as described in claim 1, special Sign is:The reparation thickness at the cupola well position is not less than 200mm;The reparation thickness at the shaft position not less than 100mm or So that the size restoration of blast furnace lining is to identical with initial designs size and the type of furnace.
3. a kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick as described in claim 1, special Sign is:The cupola well includes tapping hole and tuyere zone, and the shaft includes bosh and furnace bosh, cupola well is cleared up in the step S1 Following steps are specifically included with shaft:After confirming that construction site reaches safe construction condition, using oxyacetylene metal-cutting, pneumatic pick or drill rod, Coke in cupola well and slag iron mixture complete liquidation is clean, residual iron, the residue of cupola well, tapping hole, tuyere zone inner wall is clear Reason is clean, and cupola well position should be cleared up to brick fuel position, until the brick fuel at position to be repaired exposes;Or clear up iron layer till death With upper bit;
Using pneumatic pick or drill rod, residual iron, the residue of blast-furnace shaft inner lining surface are cleaned out, and by the refractory material of loosening, It including refractory brick and spray paint, cleans out, until the fire resisting liner body and cooling wall of repairing position reveal.
4. a kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick as claimed in claim 3, special Sign is:It is further comprising the steps of before the step S3:Blast Furnace Bottom or ladle heel layer is smooth with upper bit processing, it is installing Before blast furnace lining template/mold, the blast furnace lining includes cupola well and shaft, and one layer of oxygen is smeared in blast furnace lining material surface Change coating;Meanwhile smear one layer of miscella against the one side of cast liner body in template/mould inner wall, miscella for butter and Used oil is according to 2:1 ratio is made.
5. a kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick as claimed in claim 3, special Sign is:When being poured into tuyere zone, installation tuyere zone template/mold, when installation tuyere zone template/mold should be noted that furnace shell and The fixation of cupola well template/mold, the thickness of tuyere zone castable liner body deteriorate degree according to tuyere zone, make not less than 200mm Castable liner body is restored to the size or thickness of the initial type of furnace of newly-built blast furnace.
6. a kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick as claimed in claim 3, special Sign is:Tuyere zone template/the mold is made or is made of wood materials not less than 3mm steel plates using thickness.
7. a kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick as described in claim 1, special Sign is:When cupola well, shaft construction formwork/or mold are installed from the bottom to top in the step S3, the height installed every time for 1~ 3m;The practical height installed every time should be determined according to the height of the calibrated altitude of template/mold or place position cast liner body;Mould Plate/mold is steel material and/or wood materials.
8. a kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick as claimed in claim 7, special Sign is:When installing cupola well, shaft construction formwork/mold in the step S3 from the bottom to top, the height installed every time is usually 1.5m。
9. a kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick as described in claim 1, special Sign is:The installation blast furnace crucibe, shaft template/mold are further comprising the steps of:In blast furnace crucibe shaft template/mold Non- casting area sets support element using steel construction, is used to support template/mold.
10. a kind of blast furnace lining monolithic casting construction method for substituting spray paint and refractory brick as described in claim 1, special Sign is:The installation blast furnace crucibe, shaft template/mold are further comprising the steps of:In blast furnace crucibe, shaft template/mold The top of casting area sets support element, is used to support template/mold.
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