CN105436492B - A kind of continuous casting production reworked material working lining and preparation method thereof - Google Patents

A kind of continuous casting production reworked material working lining and preparation method thereof Download PDF

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Publication number
CN105436492B
CN105436492B CN201510992438.7A CN201510992438A CN105436492B CN 105436492 B CN105436492 B CN 105436492B CN 201510992438 A CN201510992438 A CN 201510992438A CN 105436492 B CN105436492 B CN 105436492B
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working lining
carbon brick
magnesia carbon
waste magnesia
regeneration
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CN105436492A (en
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武治宏
武光君
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Shandong Iron and Steel Group Co Ltd SISG
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Shandong Iron and Steel Group Co Ltd SISG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/02—Linings
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay

Abstract

The present invention relates to a kind of continuous casting production reworked material working lining and preparation method thereof, is divided into impact zone working lining and non-percussion area working lining, interior to be affixed on permanent liner；Non-percussion area working lining is followed successively by bag along working lining from top to bottom, containment wall working lining, underwrite lining work, impact zone working lining is built by laying bricks or stones using waste magnesia carbon brick and regeneration coating pug wet method, containment wall working lining regenerates dry materials with use is underwrited lining work, overfall working lining and bag use regeneration coating along working lining, tamped using waste material in space between turbulence inhibitor both sides and containment wall permanent liner, and in waste magnesia carbon brick outer surface, waste material outer surface and the upper surface of turbulence inhibitor smear one layer of regeneration and smear the bed of material, to reach 33~38 hours using the invention enables the service life of continuous beam blank casting tundish, the refractory material cost of reworked material working lining reduces by more than 60% on year-on-year basis.

Description

A kind of continuous casting production reworked material working lining and preparation method thereof
Technical field
The invention belongs to Ferrous Metallurgy continuous casting production technology field, is related to a kind of continuous casting production reworked material work Lining and preparation method thereof.
Background technology
Continuous casting production liner is typically made up of permanent liner, working lining, permanent liner typically using castable it is integrated poured and Into working lining is typically formed using magnesia coating or dry materials construction.In recent years, with the maximizing of conticaster, efficient Continuous casting technology progress, continuous casting tundish dry material working lining obtain Rapid Popularization application.Continuous casting production prepared by prior art Subject matter existing for working lining：Dry materials work lining refractories cost height, impact zone using magnesia as main material production Local erosion's weight；Regeneration dry materials using waste magnesia carbon brick as development of raw materials, waste magnesia carbon brick particulate material with dosage is few, additive is more, Production cost is higher.Present steel industry enters the meagre profit existence epoch, researches and develops inexpensive high life tundish reworked material working lining Technology turns into one of research topic of present steel enterprise cost efficiency.
Chinese patent literature CN102133632B discloses a kind of continuous casting production synthetic operation lining and preparation technology, according to The Wear mechanism at each position of liner in dundish is different, from the refractory material of unlike material, its molten bath position, that is, wraps bottom and slag Containment wall below line, development and Application middle-grade magnesium dry-type vibration material, slag lining development and Application top grade magnesium dry-type vibration material, its The bag on overfall top is along the low-grade magnesia coating of position development and Application.The deficiency of the invention：The lining impact of tundish synthetic operation Local erosion of area weight, refractory material cost are higher.
The content of the invention
The goal of the invention of the present invention is the problem of presence for existing continuous casting production working lining technology, there is provided Yi Zhonglian Tundish reworked material working lining and preparation method thereof is cast, this liner in dundish is using waste magnesia carbon brick and dedusting ash to be main former Material, regeneration coating, the regeneration dry materials of the waste magnesia carbon brick directly utilized and regeneration are prepared, for continuous casting production work Make the different parts served as a contrast, creatively solve existing continuous casting production working lining impact zone local erosion weight, working lining fire resisting The problems such as material cost is high, the service life that the present invention is used for continuous beam blank casting tundish reach 33~38 hours, reworked material work The refractory material cost for making to serve as a contrast reduces by more than 60% on year-on-year basis, realizes low cost, the high life of continuous casting production working lining.
Term explanation
1st, waste magnesia carbon brick, waste magnesia carbon brick of the present invention, refer to that being used for steelmaking converter, electric furnace, refining furnace working lining uses Waste magnesia carbon brick afterwards, content of MgO >=65wt%.
2nd, dedusting ash, dedusting ash of the present invention, refer in fused magnesite, highly-purity magnesite, medium-grade magnesite, spinelle etc. The dedusting ash that particulate material is broken, grinding scene deduster is collected, Li Du≤0.047mm, content of MgO >=70wt%.
Detailed description of the invention：
A kind of continuous casting production reworked material working lining, it is divided into impact zone working lining (1) and non-percussion area according to position difference Working lining, it is interior to be affixed on permanent liner (8)；Impact zone working lining (1) is located at tundish impact area and non-percussion regional boundary face (C-C) Side, and be connected with overfall working lining (7)；Non-percussion area working lining is located at tundish impact area and non-percussion regional boundary face (C- C opposite side), non-percussion area working lining is followed successively by from top to bottom to be wrapped along working lining (6), containment wall working lining (5), underwrites lining work (4), it is characterised in that bag along working lining (6) it is lower along absolute altitude on tundish overfall working lining (7), and and overfall Working lining (7) connects, and the longitudinal centre line of turbulence inhibitor (3) and tundish overlaps, and the interior tundish for being affixed on permanent liner (8) Impact zone end, the upper surface of turbulence inhibitor (3) are connected with the end of impact zone working lining (1).
Preferably, impact zone working lining (1) is built by laying bricks or stones using waste magnesia carbon brick and the regeneration coating pug wet method prepared, containment wall Working lining (5) and underwrite lining work (4) using regeneration dry materials, overfall working lining (7) and bag along working lining (6) using regeneration Coating, space (10) outside between turbulence inhibitor (3) both sides and containment wall permanent liner (5) is wall (11), using processing Waste magnesia carbon brick and the regeneration coating pug wet method of preparation afterwards is built by laying bricks or stones, and space (10) are tamped using waste material, and and turbulence control The upper surface level height of device (3) is identical, and is applied in the upper surface of waste magnesia carbon brick outer surface, waste material outer surface and turbulence inhibitor Smear one layer of regeneration and smear the bed of material (2).
According to currently preferred, impact zone working lining (1) thickness x is 50~80mm, and the bed of material (2) thickness y is smeared in regeneration For 15~30mm.
Preferably, wrap and linearly reduce from top to bottom along the thickness of working lining (6) and containment wall working lining (5), the work of bag edge The upper thickness b for serving as a contrast (6) is 60~90mm, and the bottom thickness c of containment wall working lining (5) is 40~60mm.
According to currently preferred, it is 40~60mm to underwrite lining work (4) thickness a.
According to currently preferred, overfall working lining (7) thickness z is 30~50mm.
According to currently preferred, wall (11) thickness k is 50~80mm.
Preferably, the waste material for packing space (10), refer to remove after continuous casting production working lining use useless One kind in the useless castable removed after dry materials, useless coating, refining furnace working lining use.
The processing method for being directly used in the waste magnesia carbon brick for building impact zone working lining (1) and wall (11) by laying bricks or stones：Clean out Residual steel, the slag of waste magnesia carbon brick remained on surface, then with brick cutting machine the metamorphic layer of waste magnesia carbon brick and steel contacts cut away 10~ 15mm, sort out apparent mass is good and residual thickness >=50mm waste magnesia carbon brick, carries out spray hydration process, spontaneously dries 1~2 day Afterwards, it is reloaded into heating furnace and toasts：1. it is warming up to 120~150 DEG C since normal temperature with 9~11 DEG C/h programming rates；2. 120 ~150 DEG C of 4~8h of insulation；3. it is warming up to 235~265 DEG C from 120~150 DEG C with 9~11 DEG C/h programming rates again；4. 235 ~265 DEG C of 4~8h of insulation；5. natural cooling of ceasing fire, 12~16h of cool time, it will not expand crackle, efflorescence, apparent The measured waste magnesia carbon brick detection of matter, the waste magnesia carbon brick for being so far used to build impact zone working lining (1) and wall (11) by laying bricks or stones process Into.
It is described to be used to regenerate the regeneration painting for smearing the bed of material (2), tundish overfall working lining (7) and bag along working lining (6) Skinning loam, it is made up of by weight percentage materials described below：1mm≤granularity<3mm waste magnesia carbon brick particulate material 31~35%, granularity< 1mm waste magnesia carbon brick particulate material 30~35%, Li Du≤0.074mm magnesite clinker fine powder 10~13%, Li Du≤0.047mm Dedusting ash 15~19%, soft clay 2.0~3.0%, silicon powder 2.0~3.0%, sodium tripolyphosphate 0.5~0.7%, wood Quality sulfoacid calcium 0.3~0.5%, is weight percentage.
The regeneration dry materials for being used for containment wall working lining (5) and underwriting lining work (4), by weight percentage by following materials Material composition：3mm≤granularity<5mm waste magnesia carbon brick particulate material 30~35%, 1mm≤granularity<3mm waste magnesia carbon brick particulate material 15 ~20%, granularity<1mm waste magnesia carbon brick particulate material 13~18%, Li Du≤0.074mm magnesite clinker fine powder 14~20%, Li Du≤0.047mm aluminum-spinel 3~5%, Li Du≤0.047mm dedusting ash 3~5%, Li Du≤0.083mm gold Belong to silicon 2.0~2.5%, Li Du≤0.083mm carborundum 3.0~4.0%, Li Du≤0.083mm solid phenolic resin 3.5 ~4.0%, it is weight percentage.
The present invention also provides the waste magnesia carbon brick particulate material processing side for being used for preparation regeneration coating, regenerating dry materials Method, comprise the following steps：
1. hydration process：By after selection, residual thick ＜ 50mm waste magnesia carbon brick carry out spray hydration process, ageing mixture, natural wind Dry, effect is：Aggregate in waste magnesia carbon brick is can be easily separated with substrate material in broken, reduce the quantity of false particle, remove useless magnesium Al in carbon brick4C3；
2. the waste magnesia carbon brick after hydration process is broken machine using jaw slightly to be broken, the particulate material after slightly breaking passes through conveyer belt It is transported to twin rollers and carries out thin broken, be magnetic roller in the end of conveyer belt, first magnetic separation is carried out to waste magnesia carbon brick particulate material；
3. the waste magnesia carbon brick particulate material after twin rollers thin broken, first magnetic separation, then vibratory sieve is transported to by conveyer belt and carried out Screening, equally has magnetic roller in the end of conveyer belt, and second of magnetic separation is carried out to waste magnesia carbon brick particulate material；
4. vibratory sieve sieves waste magnesia carbon brick particulate material, the other waste magnesia carbon brick particulate material of three kinds of granular-grades is obtained：3mm≤grain Degree<5mm, 1mm≤granularity<3mm, granularity<1mm, class wrapping；
5. ＞ 5mm waste magnesia carbon brick particulate material send back to jaw break machine, repeat the above steps 2., 3., 4. crushed again, magnetic Choosing, screening.
Preferably, it is described to be used to regenerate the smearing bed of material (2), tundish overfall working lining (7) and bag along working lining (6) Coating is regenerated, is made up of by weight percentage materials described below：1mm≤granularity<3mm waste magnesia carbon brick particulate material 31%, granularity< 1mm waste magnesia carbon brick particulate material 35%, Li Du≤0.074mm magnesite clinker fine powder 10%, Li Du≤0.047mm dedusting ash 19%, soft clay 2.0%, silicon powder 2.0%, sodium tripolyphosphate 0.5%, calcium lignosulfonate 0.5%, it is weight percent Than.
It is described for containment wall working lining (5) and to underwrite lining work the regeneration dry materials of (4) according to currently preferred, press Percentage by weight is made up of materials described below：3mm≤granularity<5mm waste magnesia carbon brick particulate material 35%, 1mm≤granularity<3mm's is useless Magnesia carbon brick particulate material 15%, granularity<1mm waste magnesia carbon brick particulate material 13%, Li Du≤0.074mm magnesite clinker fine powder 20%, Li Du≤0.047mm aluminum-spinel 3%, Li Du≤0.047mm dedusting ash 5%, Li Du≤0.083mm gold Belong to silicon 2.5%, grain degree≤0.083mm carborundum 3.0%, grain degree≤0.083mm solid phenolic resin 3.5%, attach most importance to Measure percentage.
The magnesite clinker, it using content of MgO is 95wt% light calcined magnesia for raw material to be, is forged through pressure ball, high temperature vertical kiln The technique productions such as burning form, content of MgO 94~95wt% of percentage, particle volume density >=3.1g/cm3。
The mild-clay, refer to have plastic fire clay, plasticity index >=3.0, mineral composition is mainly Kaolinite, Al2O3Degree is 28~30wt%, SiO2Degree is 50~55wt%, refractoriness 1630~1670 DEG C, further preferred Guangxi clay.
The silicon powder, it is the byproduct for producing metallic silicon or Antaciron；SiO in silicon ash2Content >=92wt%, granularity All less than 5 μm, and granularity accounts for 80~85% less than 2 μm.
The calcium lignosulfonate, abbreviation calcium lignosulfonate, content of lignin >=50~65%, water-insoluble≤0.5~1.5%, PH 4.-6, moisture content≤8%, water-insoluble≤1.0%, reduzate 7~13%, for refractory material dispersant and adhesive.
The aluminum-spinel is that content of MgO percentage is 41.6wt%, Al2O3Percentage composition is 56.5wt% burning Tie spinelle.
The metallic silicon, it is that silica is reduced by carbon in electric furnace and is made, the content of silicon is 97~98%, and remaining is miscellaneous Matter is iron, aluminium, calcium etc..
The carborundum, it is commonly called as diamond dust, SiC content percentage >=94wt%.
By lot of experiments and research, it has been found that magnesia carbon brick is during applied at elevated temperature, metallic aluminium powder and silicon in brick Redox reaction generation Al will occur with carbon for powder4C3And SiC, the Al in waste magnesia carbon brick after use4C3Yi Yushui occurs anti- Should：Al4C3+12H2O=4Al (OH)3+3CH4↑, the expansion crack even efflorescence of waste magnesia carbon brick is caused, the present invention passes through shower water Change, the working process such as baking in heating furnace, the Al in waste magnesia carbon brick4C3Remove, have occurred and that expansion crack, efflorescence it is useless Magnesia carbon brick detect, solve waste magnesia carbon brick not through processing, be directly used in liner in dundish initiation bulging crackle even Collapse material problem, ensure that the safe application performance of waste magnesia carbon brick.
By lot of experiments and research, it has been found that the regeneration coating prepared using waste magnesia carbon brick particulate material as main material, Regenerate in dry materials has the function that Ultramicro-powder with addition of appropriate Li Du≤0.047mm dedusting ash, dedusting ash, it is possible to increase regeneration Coating, the bulk density for regenerating dry materials, through overtesting, we have found it is optimal match somebody with somebody dosage, removed with of the present invention Regeneration coating of the dirt ash with dosage preparation, regeneration dry materials, void among particles are filled by dedusting ash, and it is close to improve volume Degree, the mixing water amount of regeneration coating is caused to be reduced to 9~11% on year-on-year basis by 13~15% again, moisture excludes to leave after baking Stomata also reduce, thus reduce the apparent porosity of regeneration coating, and dedusting ash instead of magnesia powder, further reduce Regeneration dry materials, the production cost for regenerating coating.
Meanwhile regeneration coating, regeneration dry materials and prior art of the present invention are based on waste magnesia carbon brick particulate material The magnesium carbon coating material of raw material preparation, the development mechanism of magnesium carbonaceous dry materials are different.It is well known that granularity<1mm waste magnesia carbon brick Carbon content is higher (C (%) ＞ 20) in particulate material, of the invention in this, as " carbon " source, and with addition of appropriate in dry materials are regenerated Metallic silicon and carborundum are combined the elevated temperature strength for improving regeneration dry materials by carbon, solved existing as composite antioxidant Collapse material problem, and regenerate in coating caused by low intensity during the magnesium dry-type stock working lining high-temperature baking of technology production Not with addition of antioxidant, by the quick row for uniform minute opening stomata is formed after oxidation of coal realizing moisture in baking process Remove, solution regeneration coating working lining quick-fried problem of baking caused by moisture exclusion is not smooth, and the magnesia smearing that prior art produces Material must be with addition of anti-knock agents such as appropriate refractory fibre, steel fibres.The present invention passes through many experiments according to above-mentioned development mechanism Verified with performance test, it is determined that material is smeared in regeneration coating, the material composition for regenerating dry materials, regeneration dry materials, regeneration Waste magnesia carbon brick particulate material respectively reaches 63%, more than 65% with dosage in material composition, reduce further regeneration dry materials, regeneration The production cost of coating.
The present invention also provides a kind of construction fetal membrane (12) of continuous casting production reworked material working lining：Prepared in prior art Continuous casting production reworked material working lining construction fetal membrane (12) on set up two baffle plates (13), during two baffle plates are located at respectively Between bag impact zone and non-percussion regional boundary face C-C locate, the width of baffle plate (13) is wrapped along working lining (6) and containment wall working lining with corresponding (5) thickness is identical, i.e. upper thickness b is 70~90mm, and bottom thickness c is 40~60mm.The effect of baffle plate (13) is：Using When working lining dry materials construction loose tool (12) carries out the dry materials construction of tundish containment wall working lining (5), turn into a left side for dry materials Right shell body, not filler between left baffle (13), leaves blank in advance so as to build the position of waste magnesia carbon brick by laying bricks or stones in working lining impact zone (1) Between.
According to the present invention, the preparation method of the continuous casting production reworked material working lining, comprise the following steps：
1) preparation of the regeneration coating, regeneration dry materials for continuous casting production reworked material working lining：Will be above-mentioned After material is weighed by described proportioning, add in batch mixer and stir evenly, dry to stir 5~10 minutes, after stirring, pack is standby；
2) working lining dry materials construction loose tool (12) prepares：It is clear to working lining dry materials construction loose tool (12) surface before construction After reason is clean, uniformly brush oil is standby；
3) coating pug is regenerated to prepare：Described regeneration coating is added in batch mixer, it is dry stir 2~3 minutes after, add Enter to regenerate the water of coating gross weight 9~11%, stir 4~6 minutes, stir, it is standby；
4) tundish underwrites lining work the dry materials construction of (4), and the regeneration dry materials are put into tundish bag bottom, stand It is flat, then fully tamping, and surface is flattened into press polish.It is 40~60mm to underwrite lining work (4) thickness a；
5) the working lining dry materials construction loose tool (12) that step 2) prepares is placed into tundish to underwrite lining work on (4) Face, two baffle plates (13) is close to containment wall permanent liner (8), ensure seamless；
6) the regeneration dry materials construction of tundish containment wall working lining (5), the left and right of working lining dry materials construction loose tool (12) Not filler between two baffle plates (13), i.e., build the position headspace of waste magnesia carbon brick by laying bricks or stones in working lining impact zone (1), and reserved Outside space, described regeneration dry materials are put into the side wall and containment wall permanent liner (8) of working lining dry materials construction loose tool (12) Between headspace outside gap in, the loose bed of material should be shakeout first after filler, depth of packing reach 500~ During 600mm, with pneumatic pick according to the uniform ramming jolt ramming of certain order after, then will regeneration dry filler arrive overfall position, again general The loose bed of material shakeouts, ramming jolt ramming；
7) working lining dry materials shaping baking：1. by normal temperature uniformly, continuous warming to 120~150 DEG C, toast 50~60 points Clock, flame length control is in 400~450mm；2. by 120~150 DEG C of uniform, continuous warmings to 200~230 DEG C, baking 60~ 70 minutes, the length of flame was in 600~650mm；3. cease fire after cool down 4~8 hours, working lining dry materials construction loose tool (12) from Itd is proposed in tundish；
8) turbulence inhibitor (3) is installed：Patch tundish impact area end permanent liner (8) in turbulence inhibitor (3) is installed, The longitudinal centre line of turbulence inhibitor and tundish overlaps；
9) impact zone working lining is constructed：Space (10) between turbulence inhibitor (3) both sides and containment wall permanent liner (5) is outside Side, build wall (11) by laying bricks or stones with the waste magnesia carbon brick after processing and the regeneration coating pug wet method prepared first, then tamped with waste material Space (10), and it is identical with the upper surface level height of turbulence inhibitor (3), then with the waste magnesia carbon brick after processing and preparation Regeneration coating pug wet method builds impact zone working lining (1) by laying bricks or stones, finally in waste magnesia carbon brick outer surface, waste material outer surface and turbulent flow control The upper surface of device processed smears one layer of regeneration and smears the bed of material (2), and impact zone working lining (1) thickness x is 50~80mm, and wall (11) is thick Degree k is 50~80mm, and it is 15~30mm that the bed of material (2) y is smeared in regeneration；
10) tundish overfall working lining (7) and bag are constructed along working lining (6) regeneration coating：By above-mentioned preparation again Raw coating pug, construction overfall working lining (7) and bag are smeared along working lining (6) using trowel, is wrapped along working lining (6) thickness B is 60~90mm, and overfall working lining (7) thickness z is 30~50mm, natural Health preservation 4~8 hours, continuous casting production reworked material The preparation of working lining is completed.
The beneficial effects of the invention are as follows：
1) waste magnesia carbon brick for building tundish impact area working lining by laying bricks or stones has been carried out spray aquation, done naturally by the present invention The working process such as baking, achieves unexpected effect in dry, heating furnace：The Al in waste magnesia carbon brick4C3Remove, Expand crackle, efflorescence waste magnesia carbon brick detection, solve waste magnesia carbon brick not through processing, be directly used in tundish work The bulging crackle or even material problem of collapsing that lining triggers, ensure that the safe application performance of waste magnesia carbon brick.
2) present invention is used in the regeneration coating of continuous casting production reworked material working lining, regeneration dry materials with addition of appropriate Li Du≤0.047mm dedusting ash, achieve unexpected effect：Dedusting ash has the function that Ultramicro-powder, intergranular sky Gap is filled by dedusting ash, improves bulk density, causes the mixing water amount of regeneration coating to be reduced on year-on-year basis again by 13~15% To 9~11%, the stomata that moisture excludes to leave after baking is also reduced, and thus reduces the apparent porosity of regeneration coating, and is removed Dirt ash instead of magnesia powder, reduce further regeneration dry materials, regenerates the production cost of coating.
3) present invention is used in the regeneration coating of continuous casting production reworked material working lining, regeneration dry materials with addition of appropriate Granularity<1mm waste magnesia carbon brick particulate material, achieves unexpected effect：Granularity<Carbon contains in 1mm waste magnesia carbon brick particulate material Measure higher (C (%) ＞ 20), the present invention combines the elevated temperature strength for improving regeneration dry materials, solution by carbon in this, as " carbon " source Collapse material problem, and regenerate caused by low intensity during the magnesium dry-type stock working lining high-temperature baking of prior art of having determined production Coating realizes the quick exclusion of moisture in baking process by uniform minute opening stomata is formed after oxidation of coal, solves regeneration Coating working lining dries quick-fried problem, the thing of the present invention for regenerating coating, regenerating dry materials caused by moisture exclusion is not smooth Waste magnesia carbon brick particulate material respectively reaches 63%, more than 65% with dosage in material composition, reduce further regeneration dry materials, regeneration The production cost of coating.
4) continuous casting production reworked material working lining of the present invention, using waste magnesia carbon brick and dedusting ash as main raw material(s), prepare straight Connect regeneration coating, the regeneration dry materials of the waste magnesia carbon brick utilized and regeneration, the difference for continuous casting production working lining Position, it is high creatively to solve existing continuous casting production working lining impact zone local erosion weight, work lining refractories cost The problems such as, the invention enables continuous beam blank casting tundish service life to reach 33~38 hours, the fire proofed wood of reworked material working lining Expect that cost reduces by more than 60% on year-on-year basis, realize low cost, the high life of continuous casting production working lining.
5) present invention realizes waste magnesia carbon brick and the short flow high efficiency of dedusting ash utilizes, and had both saved mineral resources, has reduced Environmental pollution, reduces steel-making cost, low-cost competition advantage, Resources for construction economizing type, environment is made to iron and steel enterprise again Friendly enterprise has important strategic importance.
Brief description of the drawings
Fig. 1 is continuous casting production reworked material working lining structure top view of the present invention；
Fig. 2 is continuous casting production reworked material working lining impact zone A-A sectional views of the present invention；
Fig. 3 is continuous casting production reworked material working lining impact zone B-B sectional views of the present invention；
Fig. 4 is continuous casting production reworked material working lining dry materials of the present invention construction fetal membrane and striker plate schematic diagram.
Wherein, 1- impact zones working lining, the bed of material is smeared in 2- regeneration (to be had at 2, respectively positioned at the appearance of impact zone working lining 1 The outer surface in the space 10 between face, turbulence inhibitor both sides and containment wall permanent liner), 3-- turbulence inhibitors, 4- bags basic skill or training makees Lining, 5- containment wall working linings, 6- bags are along working lining, 7- overfall working linings, 8- permanent liners, 9- filling pipe ends, 10- turbulence inhibitors two Space between side and containment wall permanent liner, 11- walls, 12- working linings dry materials construction loose tool, 13- baffle plates.
Embodiment
Following examples are the preparation technology further explanations to invention, but the invention is not limited in this.In embodiment Waste magnesia carbon brick used is from LF, RH refining ladle of Laiwu branch company of Shandong Iron ＆ Steel Co., Ltd., steelmaking converter, electricity Waste magnesia carbon brick after the working lining use of stove, content of MgO >=65wt%.Dedusting ash is public from the safe eastern industry of Laiwu steel enterprise Take charge of and remove the particulate materials such as fused magnesite, highly-purity magnesite, medium-grade magnesite, spinelle are broken, grinding scene deduster is collected Dirt ash, Li Du≤0.047mm, content of MgO >=70wt%.Other raw materials are commercial products：
Magnesite clinker content of MgO 94~95wt% of percentage, particle volume density >=3.1g/cm3。
Aluminum-spinel is that content of MgO percentage is 41.6wt%, Al2O3Percentage composition is 56.5wt%.
Silicon powder SiO2Content >=92wt%, granularity is all less than 5 μm, and granularity accounts for 80~85% less than 2 μm.
Mild-clay is Guangxi clay.
The content of silicon is 97~98% in metallic silicon, and remaining impurity is iron, aluminium, calcium etc..
SiC content percentage >=94wt% in carborundum.
Content of lignin >=50~65% in calcium lignosulfonate, water-insoluble≤0.5~1.5%, PH 4.-6, moisture content ≤ 8%, water-insoluble≤1.0%, reduzate 7~13%.
Embodiment 1：
Shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of continuous casting production reworked material working lining, it is divided into impact zone according to position difference Working lining 1 and non-percussion area working lining, it is interior to be affixed on permanent liner 8；Impact zone working lining 1 is located at tundish impact area and non-percussion Regional boundary face C-C side, and be connected with overfall working lining (7)；Non-percussion area working lining is located at tundish impact area and non-punching Regional boundary face C-C opposite side is hit, non-percussion area working lining is followed successively by bag along working lining 6, containment wall working lining 5, bag bottom from top to bottom Working lining 4, it is characterised in that bag along working lining 6 it is lower along absolute altitude on tundish overfall working lining 7, and and overfall Working lining 7 connects, and the longitudinal centre line of turbulence inhibitor 3 and tundish overlaps, and the interior tundish impact area for being affixed on permanent liner 8 End, the upper surface of turbulence inhibitor 3 are connected with the end of impact zone working lining 1.
Impact zone working lining 1 is built by laying bricks or stones using the waste magnesia carbon brick after processing and the regeneration coating pug wet method prepared, containment wall Working lining 5 uses regeneration coating using regeneration dry materials, overfall working lining 7 and bag with underwriting lining work 4 along working lining 6, The outside of space 10 between the both sides of turbulence inhibitor 3 and containment wall permanent liner 5 is wall 11, using the waste magnesia carbon brick and system after processing Standby regeneration coating pug wet method is built by laying bricks or stones, and space 10 is tamped using waste material, and with the upper surface level height of turbulence inhibitor 3 It is identical, and smear one layer of regeneration in the upper surface of waste magnesia carbon brick outer surface, waste material outer surface and turbulence inhibitor and smear the bed of material 2.
The thickness x of impact zone working lining 1 is 80mm, and it is 15mm that the thickness y of the bed of material 2 is smeared in the regeneration.
The bag linearly reduces from top to bottom along the thickness of working lining 6 and containment wall working lining 5, wraps along the upper of working lining 6 Portion thickness b is 90mm, and the bottom thickness c of containment wall working lining 5 is 60mm.
The 4 thickness a that underwrite lining work are 60mm.
The thickness z of overfall working lining 7 is 50mm.
The thickness k of wall 11 is 80mm.
The waste material for packing space 10, refer to the useless dry materials removed after continuous casting production working lining use.
The processing method for being directly used in the waste magnesia carbon brick for building impact zone working lining 1 and wall 11 by laying bricks or stones：Clean out useless magnesium Residual steel, the slag of carbon brick remained on surface, then the metamorphic layer of waste magnesia carbon brick and steel contacts is cut away 10mm, sort out with brick cutting machine Apparent mass is good and residual thickness >=50mm waste magnesia carbon brick, carries out spray hydration process, after spontaneously drying 2 days, is reloaded into heating furnace Interior baking：1. it is warming up to 120 DEG C since normal temperature with 9 DEG C/h programming rates；2. it is incubated 8h at 120 DEG C；3. again from 120 DEG C with 9 DEG C/h programming rates are warming up to 235 DEG C；4. it is incubated 8h at 235 DEG C；5. natural cooling of ceasing fire, cool time 12h, will it not occur The good waste magnesia carbon brick detection of expansion crack, efflorescence, apparent mass, is so far used to build the useless of impact zone working lining 1 and wall 11 by laying bricks or stones Magnesia carbon brick machines.
It is described to be used to prepare regeneration coating, regenerate the waste magnesia carbon brick particulate material processing method of dry materials, including following step Suddenly：
1. hydration process：By after selection, residual thick ＜ 50mm waste magnesia carbon brick carry out spray hydration process, ageing mixture, natural wind Dry, effect is：Aggregate in waste magnesia carbon brick is can be easily separated with substrate material in broken, reduce the quantity of false particle, remove useless magnesium Al in carbon brick4C3；
2. the waste magnesia carbon brick after hydration process is broken machine using jaw slightly to be broken, the particulate material after slightly breaking passes through conveyer belt It is transported to twin rollers and carries out thin broken, be magnetic roller in the end of conveyer belt, first magnetic separation is carried out to waste magnesia carbon brick particulate material；
3. the waste magnesia carbon brick particulate material after twin rollers thin broken, first magnetic separation, then vibratory sieve is transported to by conveyer belt and carried out Screening, equally has magnetic roller in the end of conveyer belt, and second of magnetic separation is carried out to waste magnesia carbon brick particulate material；
4. vibratory sieve sieves waste magnesia carbon brick particulate material, the other waste magnesia carbon brick particulate material of three kinds of granular-grades is obtained：3mm≤grain Degree<5mm, 1mm≤granularity<3mm, granularity<1mm, class wrapping；
5. ＞ 5mm waste magnesia carbon brick particulate material send back to jaw break machine, repeat the above steps 2., 3., 4. crushed again, magnetic Choosing, screening.
It is described to be used to regenerate the regeneration coating for smearing the bed of material 2, tundish overfall working lining 7 and bag along working lining 6, press Percentage by weight is made up of materials described below：1mm≤granularity<3mm waste magnesia carbon brick particulate material 31%, granularity<1mm waste magnesia carbon brick Particulate material 35%, Li Du≤0.074mm magnesite clinker fine powder 10%, Li Du≤0.047mm dedusting ash 19%, soft clay 2.0%, silicon powder 2.0%, sodium tripolyphosphate 0.5%, calcium lignosulfonate 0.5%, it is weight percentage.
The regeneration dry materials for being used for containment wall working lining 5 and underwriting lining work 4, by weight percentage by materials described below group Into：3mm≤granularity<5mm waste magnesia carbon brick particulate material 35%, 1mm≤granularity<3mm waste magnesia carbon brick particulate material 15%, granularity< 1mm waste magnesia carbon brick particulate material 13%, Li Du≤0.074mm magnesite clinker fine powder 20%, Li Du≤0.047mm magnalium point Spar 3%, Li Du≤0.047mm dedusting ash 5%, Li Du≤0.083mm metallic silicon 2.5%, Li Du≤0.083mm carbon SiClx 3.0%, grain degree≤0.083mm solid phenolic resin 3.5%, is weight percentage.
The present invention also provides a kind of construction fetal membrane 12 of continuous casting production reworked material working lining：Prepared in prior art 2 baffle plates 13 are set up on the construction fetal membrane 12 of continuous casting production reworked material working lining, two baffle plates rush positioned at tundish respectively Hit area and at non-percussion regional boundary face C-C, the width of baffle plate 13 and corresponding bag be identical with the thickness of containment wall working lining 5 along working lining 6, That is upper thickness b is 90mm, and bottom thickness c is 60mm.The effect of baffle plate 13 is：Using working lining dry materials construction loose tool 12 When carrying out the dry materials construction of tundish containment wall working lining 5, turn into the left baffle of dry materials, do not filled out between left baffle 13 Material, so as to build the position headspace of waste magnesia carbon brick by laying bricks or stones in working lining impact zone 1.
The preparation method of the continuous casting production reworked material working lining, comprises the following steps：
1) preparation of the regeneration coating, regeneration dry materials for continuous casting production reworked material working lining：Will be above-mentioned After material is weighed by described proportioning, add in batch mixer and stir evenly, dry to stir 5 minutes, after stirring, pack is standby；
2) working lining dry materials construction loose tool 12 prepares：The construction removing surface of loose tool 12 of working lining dry materials is done before construction After net, uniformly brush oil is standby；
3) coating pug is regenerated to prepare：Described regeneration coating is added in batch mixer, it is dry stir 3 minutes after, add The water of coating gross weight 9% is regenerated, stirs 6 minutes, stirs, it is standby；
4) tundish underwrites lining work 4 dry materials construction, and the regeneration dry materials are put into tundish bag bottom, shakeout, Then fully tamping, and surface is flattened into press polish.It is 60mm to underwrite lining work 4 thickness a；
5) the working lining dry materials construction loose tool 14 that step 2) prepares is placed into tundish to underwrite lining work above 4, made Two baffle plates 13 are close to containment wall permanent liner 8, are ensured seamless；
6) the regeneration dry materials construction of tundish containment wall working lining 5, the left and right two of working lining dry materials construction loose tool 12 Not filler between baffle plate 13, i.e., build the position headspace of waste magnesia carbon brick by laying bricks or stones in working lining impact zone 1, and headspace it Outside, described regeneration dry materials are put into reserved between the side wall and containment wall permanent liner 8 of working lining dry materials construction loose tool 14 In gap outside space, the loose bed of material should be shakeout first after filler, depth of packing reach 500mm when, with pneumatic pick according to Certain order will again be shakeout the loose bed of material, ramming uniformly after ramming jolt ramming, then will regenerate dry filler to overfall position Jolt ramming；
7) working lining dry materials shaping baking：1. by normal temperature uniformly, continuous warming to 135 DEG C, toast 50 minutes, flame length Degree control is in 400~450mm；2. by 135 DEG C uniformly, continuous warmings to 215 DEG C, toast 60 minutes, the length of flame 600~ 650mm；3. being cooled down 4 hours after ceasing fire, working lining dry materials construction loose tool 12 is proposed out of tundish；
8) turbulence inhibitor 3 is installed：Patch tundish impact area end permanent liner 8 in turbulence inhibitor 3 is installed, turbulent flow control The longitudinal centre line of device and tundish processed overlaps；
9) impact zone working lining is constructed：The outside of space 10 between the both sides of turbulence inhibitor 3 and containment wall permanent liner 5, first Wall 11 is built by laying bricks or stones with the waste magnesia carbon brick after processing and the regeneration coating pug wet method prepared, then tamps space 10 with waste material, and It is identical with the upper surface level height of turbulence inhibitor 3, then with the waste magnesia carbon brick after processing and the regeneration coating mud prepared Material wet method builds impact zone working lining 1 by laying bricks or stones, is finally applied in the upper surface of waste magnesia carbon brick outer surface, waste material outer surface and turbulence inhibitor Smear one layer of regeneration and smear the bed of material 2, the waste magnesia carbon brick thickness x of impact zone working lining 1 is 80mm, and the thickness k of wall 11 is 80mm, and regeneration applies The thickness y of skinning loam layer 2 is 15mm；
10) tundish overfall working lining 7 and bag regenerate coating construction along working lining 6：The regeneration of above-mentioned preparation is applied Skinning loam pug, construction overfall working lining 7 and bag is smeared along working lining 6 using trowel, it is 90mm to wrap along the thickness b of working lining 6, is overflow The thickness z of head piece working lining 7 is 50mm, natural Health preservation 4 hours, and the preparation of continuous casting production reworked material working lining is completed.
Embodiment 2
, with embodiment 1, difference is for other：
The thickness x of impact zone working lining 1 is 50mm, and it is 30mm that the thickness y of the bed of material 2 is smeared in regeneration.
The bag is 60mm along the upper thickness b of working lining 6, and the bottom thickness c of containment wall working lining 5 is 40mm.
The 4 thickness a that underwrite lining work are 40mm.
The coating thickness z of overfall working lining 7 is 30mm.
The thickness k of wall 11 is 50mm.
The waste material for packing space 10, refer to the useless castable removed after refining furnace working lining use.
The processing for being directly used in the waste magnesia carbon brick for building impact zone working lining 1 and wall 11 by laying bricks or stones：Clean out waste magnesia carbon brick Residual steel, the slag of remained on surface, then the metamorphic layer of waste magnesia carbon brick and steel contacts is cut away 15mm with brick cutting machine, sort out is apparent Quality is good and residual thickness >=50mm waste magnesia carbon brick, carries out spray hydration process, after spontaneously drying 1 day, is reloaded into heating furnace and dries It is roasting：1. it is warming up to 150 DEG C since normal temperature with 11 DEG C/h programming rates；2. it is incubated 4h at 150 DEG C；3. again from 150 DEG C with 11 DEG C/ H programming rates are warming up to 265 DEG C；4. it is incubated 4h at 265 DEG C；5. natural cooling of ceasing fire, cool time 16h will be swollen without occurring The good waste magnesia carbon brick detection of spalling line, efflorescence, apparent mass, so far it is used for the useless magnesium for building impact zone working lining 1 and wall 11 by laying bricks or stones Carbon brick machines.
It is described to be used to regenerate the regeneration coating for smearing the bed of material 2, tundish overfall working lining 7 and bag along working lining 6, 1mm≤granularity<3mm waste magnesia carbon brick particulate material 33%, granularity<1mm waste magnesia carbon brick particulate material 32%, Li Du≤0.074mm Magnesite clinker fine powder 12%, Li Du≤0.047mm dedusting ash 17%, soft clay 2.6%, silicon powder 2.4%, trimerization phosphorus Sour sodium 0.6%, calcium lignosulfonate 0.4%, is weight percentage.
The regeneration dry materials for being used for containment wall working lining 5 and underwriting lining work 4, by weight percentage by materials described below group Into：3mm≤granularity<5mm waste magnesia carbon brick particulate material 32%, 1mm≤granularity<3mm waste magnesia carbon brick particulate material 17%, granularity< 1mm waste magnesia carbon brick particulate material 15%, Li Du≤0.074mm magnesite clinker fine powder 18%, Li Du≤0.047mm magnalium point Spar 4%, Li Du≤0.047mm dedusting ash 4.5%, Li Du≤0.083mm metallic silicon 2.3%, Li Du≤0.083mm's Carborundum 3.5%, grain degree≤0.083mm solid phenolic resin 3.7%, is weight percentage.
The construction fetal membrane 12 of the continuous casting production reworked material working lining, the upper thickness b of baffle plate 13 are 60mm, bottom Thickness c is 40mm.
The preparation method of the continuous casting production reworked material working lining, comprises the following steps：
1) preparation of the regeneration coating, regeneration dry materials for continuous casting production reworked material working lining：Will be above-mentioned After material is weighed by described proportioning, add in batch mixer and stir evenly, dry to stir 10 minutes, after stirring, pack is standby；
2) working lining dry materials construction loose tool 12 prepares：The construction removing surface of loose tool 12 of working lining dry materials is done before construction After net, uniformly brush oil is standby；
3) coating pug is regenerated to prepare：Described regeneration coating is added in batch mixer, it is dry stir 2 minutes after, add The water of coating gross weight 10% is regenerated, stirs 4 minutes, stirs, it is standby；
4) tundish underwrites lining work 4 dry materials construction, and the regeneration dry materials are put into tundish bag bottom, shakeout, Then fully tamping, and surface is flattened into press polish.It is 40mm to underwrite lining work 4 thickness a；
5) the working lining dry materials construction loose tool 12 that step 2) prepares is placed into tundish to underwrite lining work above 4, made Two baffle plates 13) it is close to containment wall permanent liner 8, ensure seamless；
6) the regeneration dry materials construction of tundish containment wall working lining 5, the left and right two of working lining dry materials construction loose tool 12 Not filler between baffle plate 13, i.e., build the position headspace of waste magnesia carbon brick by laying bricks or stones in working lining impact zone 1, and headspace it Outside, described regeneration dry materials are put into reserved between the side wall and containment wall permanent liner 8 of working lining dry materials construction loose tool 14 In gap outside space, the loose bed of material should be shakeout first after filler, depth of packing reach 550mm when, with pneumatic pick according to Certain order will again be shakeout the loose bed of material, ramming uniformly after ramming jolt ramming, then will regenerate dry filler to overfall position Jolt ramming；
7) working lining dry materials shaping baking：1. by normal temperature uniformly, continuous warming to 140 DEG C, toast 55 minutes, flame length Degree control is in 400~450mm；2. by 140 DEG C uniformly, continuous warmings to 220 DEG C, toast 65 minutes, the length of flame 600~ 650mm；3. being cooled down 6 hours after ceasing fire, working lining dry materials construction loose tool 12 is proposed out of tundish；
8) turbulence inhibitor 3 is installed：Patch tundish impact area end permanent liner 8 in turbulence inhibitor 3 is installed, turbulent flow control The longitudinal centre line of device and tundish processed overlaps；
9) impact zone working lining is constructed：The outside of space 10 between the both sides of turbulence inhibitor 3 and containment wall permanent liner 5, first Wall 11 is built by laying bricks or stones with the waste magnesia carbon brick after processing and the regeneration coating pug wet method prepared, then tamps space 10 with waste material, and It is identical with the upper surface level height of turbulence inhibitor 3, then with the waste magnesia carbon brick after processing and the regeneration coating mud prepared Material wet method builds impact zone working lining 1 by laying bricks or stones, is finally applied in the upper surface of waste magnesia carbon brick outer surface, waste material outer surface and turbulence inhibitor Smear one layer of regeneration and smear the bed of material 2, the waste magnesia carbon brick thickness x of impact zone working lining 1 is 50mm, and the thickness k of wall 11 is 50mm, and regeneration applies The thickness y of skinning loam layer 2 is 30mm；
10) tundish overfall working lining 7 and bag regenerate coating construction along working lining 6：The regeneration of above-mentioned preparation is applied Skinning loam pug, construction overfall working lining 7 and bag is smeared along working lining 6 using trowel, it is 60mm to wrap along the thickness b of working lining 6, is overflow The thickness z of head piece working lining 7 is 30mm, natural Health preservation 6 hours, and the preparation of continuous casting production reworked material working lining is completed.
Embodiment 3
, with embodiment 1, difference is for other：
The thickness x of impact zone working lining 1 is 70mm, and it is 20mm that the thickness y of the bed of material 2 is smeared in regeneration.
The bag is 80mm along the upper thickness b of working lining 6, and the bottom thickness c of containment wall working lining 5 is 50mm.
The 4 thickness a that underwrite lining work are 50mm.
The thickness z of overfall working lining 7 is 40mm.
The thickness k of wall 11 is 60mm.
The waste material for packing space 10, refer to the useless coating removed after continuous casting production working lining use.
The processing method for being directly used in the waste magnesia carbon brick for building impact zone working lining 1 and wall 11 by laying bricks or stones：Clean out useless magnesium Residual steel, the slag of carbon brick remained on surface, then the metamorphic layer of waste magnesia carbon brick and steel contacts is cut away 12mm, sort out with brick cutting machine Apparent mass is good and residual thickness >=50mm waste magnesia carbon brick, carries out spray hydration process, after spontaneously drying 1.5 days, is reloaded into heating Toasted in stove：1. it is warming up to 135 DEG C since normal temperature with 10 DEG C/h programming rates；2. it is incubated 6h at 135 DEG C；3. again from 135 DEG C 250 DEG C are warming up to 10 DEG C/h programming rates；4. it is incubated 6h at 250 DEG C；5. natural cooling of ceasing fire, cool time 14h, will not have The good waste magnesia carbon brick detection of crackle, efflorescence, apparent mass is expanded, is so far used to build impact zone working lining 1 and wall 11 by laying bricks or stones Waste magnesia carbon brick machine.
It is described to be used to prepare regeneration coating, regenerate the waste magnesia carbon brick particulate material processing of dry materials, comprise the following steps：
1. hydration process：By after selection, residual thick ＜ 50mm waste magnesia carbon brick carry out spray hydration process, natural air drying, make With being：Aggregate in waste magnesia carbon brick is can be easily separated with substrate material in broken, reduce the quantity of false particle, promote in waste magnesia carbon brick Al4C3Aquation；
2. the waste magnesia carbon brick after hydration process is broken machine using jaw slightly to be broken, the particulate material after slightly breaking passes through conveyer belt It is transported to twin rollers and carries out thin broken, be magnetic roller in the end of conveyer belt, first magnetic separation is carried out to waste magnesia carbon brick particulate material；
3. the waste magnesia carbon brick particulate material after twin rollers thin broken, first magnetic separation, then vibratory sieve is transported to by conveyer belt and carried out Screening, equally has magnetic roller in the end of conveyer belt, and second of magnetic separation is carried out to waste magnesia carbon brick particulate material；
4. vibratory sieve sieves waste magnesia carbon brick particulate material, the other waste magnesia carbon brick particulate material of three kinds of granular-grades is obtained：3mm≤grain Degree<5mm, 1mm≤granularity<3mm, granularity<1mm, class wrapping；
5. ＞ 5mm waste magnesia carbon brick particulate material send back to jaw break machine, repeat the above steps 2., 3., 4. crushed again, magnetic Choosing, screening.
It is described to be used to regenerate the regeneration coating for smearing the bed of material 2, tundish overfall working lining 7 and bag along working lining 6, press Percentage by weight is made up of materials described below：1mm≤granularity<3mm waste magnesia carbon brick particulate material 35%, granularity<1mm waste magnesia carbon brick Particulate material 30%, Li Du≤0.074mm magnesite clinker fine powder 13%, Li Du≤0.047mm dedusting ash 15%, soft clay 3.0%, silicon powder 3.0%, sodium tripolyphosphate 0.7%, calcium lignosulfonate 0.3%, it is weight percentage；
The regeneration dry materials for being used for containment wall working lining 5 and underwriting lining work 4, by weight percentage by materials described below group Into：3mm≤granularity<5mm waste magnesia carbon brick particulate material 30%, 1mm≤granularity<3mm waste magnesia carbon brick particulate material 20%, granularity< 1mm waste magnesia carbon brick particulate material 18%, Li Du≤0.074mm magnesite clinker fine powder 14%, Li Du≤0.047mm magnalium point Spar 5%, Li Du≤0.047mm dedusting ash 3%, Li Du≤0.083mm metallic silicon 2.0%, Li Du≤0.083mm carbon SiClx 4.0%, grain degree≤0.083mm solid phenolic resin 4.0%, is weight percentage；
The construction fetal membrane 12 of the continuous casting production reworked material working lining, the upper thickness b of baffle plate 13 are 80mm, bottom Thickness c is 50mm.
The preparation method of the continuous casting production reworked material working lining, comprises the following steps：
1) preparation of the regeneration coating, regeneration dry materials for continuous casting production reworked material working lining：Will be above-mentioned After material is weighed by described proportioning, add in batch mixer and stir evenly, dry to stir 7 minutes, after stirring, pack is standby；
2) working lining dry materials construction loose tool 12 prepares：The construction removing surface of loose tool 12 of working lining dry materials is done before construction After net, uniformly brush oil is standby；
3) coating pug is regenerated to prepare：Described regeneration coating is added in batch mixer, it is dry stir 2 minutes after, add The water of coating gross weight 11% is regenerated, stirs 5 minutes, stirs, it is standby；
4) tundish underwrites lining work 4 dry materials construction, and the regeneration dry materials are put into tundish bag bottom, shakeout, Then fully tamping, and surface is flattened into press polish.It is 50mm to underwrite lining work 4) thickness a；
5) the working lining dry materials construction loose tool 12 that step 2) prepares is placed into tundish to underwrite lining work above 4, made Two baffle plates 13 are close to containment wall permanent liner 8, are ensured seamless；
6) the regeneration dry materials construction of tundish containment wall working lining 5, the left and right two of working lining dry materials construction loose tool 12 Not filler between baffle plate 13, i.e., build the position headspace of waste magnesia carbon brick by laying bricks or stones in working lining impact zone 1, and headspace it Outside, described regeneration dry materials are put into reserved between the side wall and containment wall permanent liner 8 of working lining dry materials construction loose tool 14 In gap outside space, the loose bed of material should be shakeout first after filler, depth of packing reach 600mm when, with pneumatic pick according to Certain order will again be shakeout the loose bed of material, ramming uniformly after ramming jolt ramming, then will regenerate dry filler to overfall position Jolt ramming；
7) working lining dry materials shaping baking：1. by normal temperature uniformly, continuous warming to 150 DEG C, toast 60 minutes, flame length Degree control is in 400~450mm；2. by 150 DEG C uniformly, continuous warmings to 230 DEG C, toast 70 minutes, the length of flame 600~ 650mm；3. being cooled down 8 hours after ceasing fire, working lining dry materials construction loose tool 12 is proposed out of tundish；
8) turbulence inhibitor 3 is installed：Patch tundish impact area end permanent liner 8 in turbulence inhibitor 3 is installed, turbulent flow control The longitudinal centre line of device and tundish processed overlaps；
9) impact zone working lining is constructed：The outside of space 10 between the both sides of turbulence inhibitor 3 and containment wall permanent liner 5, first Wall 11 is built by laying bricks or stones with the waste magnesia carbon brick after processing and the regeneration coating pug wet method prepared, then tamps space 10 with waste material, and It is identical with the upper surface level height of turbulence inhibitor 3, then with the waste magnesia carbon brick after processing and the regeneration coating mud prepared Material wet method builds impact zone working lining 1 by laying bricks or stones, is finally applied in the upper surface of waste magnesia carbon brick outer surface, waste material outer surface and turbulence inhibitor Smear one layer of regeneration and smear the bed of material 2, the waste magnesia carbon brick thickness x of impact zone working lining 1 is 70mm, and the thickness k of wall 11 is 60mm, and regeneration applies The thickness y of skinning loam layer 2 is 20mm；
10) tundish overfall working lining 7 and bag regenerate coating construction along working lining 6：The regeneration of above-mentioned preparation is applied Skinning loam pug, construction overfall working lining 7 and bag are smeared along working lining 6 using trowel, wrap along the upper thickness b of working lining 6 and be 80mm, the thickness z of overfall working lining 7 are 40mm, natural Health preservation 8 hours, and the preparation of continuous casting production reworked material working lining is completed.
Comparative example：Chinese patent literature CN102133632B (application numbers：201110102385.9) disclose a kind of continuous casting Tundish synthetic operation serves as a contrast and preparation technology, its molten bath position, that is, wraps the containment wall below bottom and slag line, and development and Application middle-grade is magnesia Dry-type vibration material, slag lining development and Application top grade magnesium dry-type vibration material, the bag on its overfall top is along position development and Application Low-grade magnesia coating.
1-3 of the embodiment of the present invention and documents (Chinese patent literature CN102133632B (application numbers： 201110102385.9) a kind of continuous casting production synthetic operation lining and preparation technology) continuous casting production working lining structural wood Material, refractory material cost and the service life feelings on Laiwu branch company of Shandong Iron ＆ Steel Co., Ltd. continuous beam blank casting tundish Condition contrasts, as shown in table 1 below：
Table 1
The production cost ratio of the continuous casting production reworked material working lining prepared by the data comparison in upper table 1, the present invention Existing patent CN102133632B (application numbers：CN102133632B) the continuous casting production synthetic operation lining fire proofed wood of technology production Expect that cost reduces by more than 60% on year-on-year basis, and it is suitable for the service life of shaped blank base continuous casting production, it is 33~38 hours.

Claims (8)

1. a kind of continuous casting production reworked material working lining, it is divided into impact zone working lining according to position difference（1）With non-percussion Qu works Serve as a contrast, it is interior to be affixed on permanent liner（8）；Impact zone working lining（1）Positioned at tundish impact area and non-percussion regional boundary face（C-C）One Side, and with overfall working lining（7）Connection；Non-percussion area working lining is located at tundish impact area and non-percussion regional boundary face（C-C） Opposite side, non-percussion area working lining is followed successively by bag along working lining from top to bottom（6）, containment wall working lining（5）, underwrite lining work （4）, it is characterised in that wrap along working lining（6）It is lower along absolute altitude in tundish overfall working lining（7）On, and and overfall Working lining（7）Connection, turbulence inhibitor（3）Overlapped with the longitudinal centre line of tundish, and interior be affixed on permanent liner（8）Tundish Impact zone end, turbulence inhibitor（3）Upper surface and impact zone working lining（1）End connection；
Impact zone working lining（1）Built by laying bricks or stones using waste magnesia carbon brick and the regeneration coating pug wet method prepared, containment wall working lining（5）With Underwrite lining work（4）Using regeneration dry materials, overfall working lining（7）With bag along working lining（6）Using regeneration coating, turbulent flow Controller（3）Both sides and containment wall permanent liner（8）Between space（10）Outside is wall（11）, using the waste magnesia carbon brick after processing Built by laying bricks or stones with the regeneration coating pug wet method of preparation, space（10）Tamped using waste material, and and turbulence inhibitor（3）Upper surface Level height is identical, and smears one layer of regeneration in the upper surface of waste magnesia carbon brick outer surface, waste material outer surface and turbulence inhibitor and apply Skinning loam layer（2）；
It is described to be used to regenerate the smearing bed of material（2）, tundish overfall working lining（7）And wrap along working lining（6）Regeneration coating, It is made up of by weight percentage materials described below：1mm≤granularity<3mm waste magnesia carbon brick particulate material 31~35%, granularity<1mm's is useless Magnesia carbon brick particulate material 30~35%, Li Du≤0.074mm magnesite clinker fine powder 10~13%, Li Du≤0.047mm dedusting ash 15~19%, soft clay 2.0~3.0%, silicon powder 2.0~3.0%, sodium tripolyphosphate 0.5~0.7%, calcium lignosulfonate 0.3 ~0.5%, it is weight percentage；
It is described to be used for containment wall working lining（5）With underwrite lining work（4）Regeneration dry materials, by weight percentage by materials described below group Into：3mm≤granularity<5mm waste magnesia carbon brick particulate material 30~35%, 1mm≤granularity<3mm waste magnesia carbon brick particulate material 15~ 20%, granularity<1mm waste magnesia carbon brick particulate material 13~18%, Li Du≤0.074mm magnesite clinker fine powder 14~20%, Li Du≤ 0.047mm aluminum-spinel 3~5%, Li Du≤0.047mm dedusting ash 3~5%, Li Du≤0.083mm metallic silicon 2.0 ~2.5%, Li Du≤0.083mm carborundum 3.0~4.0%, Li Du≤0.083mm solid phenolic resin 3.5~4.0%, It is weight percentage.
2. continuous casting production reworked material working lining as claimed in claim 1, it is characterised in that impact zone working lining（1）Thickness x For 50~80mm, the bed of material is smeared in regeneration（2）Thickness y is 15~30mm.
3. continuous casting production reworked material working lining as claimed in claim 1, it is characterised in that wrap along working lining（6）With containment wall Working lining（5）Thickness linearly reduce from top to bottom, wrap along working lining（6）Upper thickness b be 60~90mm, containment wall work Lining（5）Bottom thickness c be 40~60mm；
Underwrite lining work（4）Thickness a is 40~60mm；
Overfall working lining（7）Thickness z is 30~50mm；
Wall（11）Thickness k is 50~80mm.
4. the continuous casting production reworked material working lining as described in any one of claims 1 to 3, it is characterised in that described directly to use In building impact zone working lining by laying bricks or stones（1）And wall（11）Waste magnesia carbon brick processing method：Clean out waste magnesia carbon brick remained on surface Residual steel, slag, then the metamorphic layer of waste magnesia carbon brick and steel contacts is cut away 10~15mm, sort out apparent mass with brick cutting machine Good and residual thickness >=50mm waste magnesia carbon brick, carries out spray hydration process, after spontaneously drying 1~2 day, is reloaded into heating furnace and dries It is roasting：1. it is warming up to 120~150 DEG C since normal temperature with 9~11 DEG C/h programming rates；2. it is incubated 4~8h at 120~150 DEG C；③ Again 235~265 DEG C are warming up to from 120~150 DEG C with 9~11 DEG C/h programming rates；4. it is incubated 4~8h at 235~265 DEG C；⑤ Truce natural cooling, 12~16h of cool time, it will not expand the good waste magnesia carbon brick of crackle, efflorescence, apparent mass and examine Go out, be so far used to build impact zone working lining by laying bricks or stones（1）And wall（11）Waste magnesia carbon brick machine.
5. the continuous casting production reworked material working lining as described in any one of claims 1 to 3, it is characterised in that described to be used to make Standby regeneration coating, the waste magnesia carbon brick particulate material processing method for regenerating dry materials, comprise the following steps：
1. hydration process：By after selection, residual thick ＜ 50mm waste magnesia carbon brick carry out spray hydration process, ageing mixture, natural air drying, make With being：Aggregate in waste magnesia carbon brick is can be easily separated with substrate material in broken, reduce the quantity of false particle, remove in waste magnesia carbon brick Al4C3；
2. the waste magnesia carbon brick after hydration process is broken machine using jaw slightly to be broken, the particulate material after slightly breaking is conveyed by conveyer belt Thin broken is carried out to twin rollers, is magnetic roller in the end of conveyer belt, first magnetic separation is carried out to waste magnesia carbon brick particulate material；
3. the waste magnesia carbon brick particulate material after twin rollers thin broken, first magnetic separation, then vibratory sieve is transported to by conveyer belt and sieved, Equally there is magnetic roller in the end of conveyer belt, second of magnetic separation is carried out to waste magnesia carbon brick particulate material；
4. vibratory sieve sieves waste magnesia carbon brick particulate material, the other waste magnesia carbon brick particulate material of three kinds of granular-grades is obtained：3mm≤granularity< 5mm, 1mm≤granularity<3mm, granularity<1mm, class wrapping；
5. ＞ 5mm waste magnesia carbon brick particulate material send back to jaw break machine, repeat the above steps 2., 3., 4. crushed again, magnetic separation, Screening.
6. continuous casting production reworked material working lining as claimed in claim 4, it is characterised in that described to be used to prepare regeneration smearing The waste magnesia carbon brick particulate material processing method of material, regeneration dry materials, comprises the following steps：
1. hydration process：By after selection, residual thick ＜ 50mm waste magnesia carbon brick carry out spray hydration process, ageing mixture, natural air drying, make With being：Aggregate in waste magnesia carbon brick is can be easily separated with substrate material in broken, reduce the quantity of false particle, remove in waste magnesia carbon brick Al4C3；
2. the waste magnesia carbon brick after hydration process is broken machine using jaw slightly to be broken, the particulate material after slightly breaking is conveyed by conveyer belt Thin broken is carried out to twin rollers, is magnetic roller in the end of conveyer belt, first magnetic separation is carried out to waste magnesia carbon brick particulate material；
3. the waste magnesia carbon brick particulate material after twin rollers thin broken, first magnetic separation, then vibratory sieve is transported to by conveyer belt and sieved, Equally there is magnetic roller in the end of conveyer belt, second of magnetic separation is carried out to waste magnesia carbon brick particulate material；
4. vibratory sieve sieves waste magnesia carbon brick particulate material, the other waste magnesia carbon brick particulate material of three kinds of granular-grades is obtained：3mm≤granularity< 5mm, 1mm≤granularity<3mm, granularity<1mm, class wrapping；
5. ＞ 5mm waste magnesia carbon brick particulate material send back to jaw break machine, repeat the above steps 2., 3., 4. crushed again, magnetic separation, Screening.
7. the preparation method of the continuous casting production reworked material working lining as described in any one of claim 1~6, including following step Suddenly：
1）The preparation of the regeneration coating, regeneration dry materials for continuous casting production reworked material working lining：By above-mentioned material After being weighed by described proportioning, add in batch mixer and stir evenly, dry to stir 5 ~ 10 minutes, after stirring, pack is standby；
2）Working lining dry materials construction loose tool（12）Prepare：To working lining dry materials construction loose tool before construction（12）Removing surface is done After net, uniformly brush oil is standby；
3）Coating pug is regenerated to prepare：Described regeneration coating is added in batch mixer, it is dry stir 2 ~ 3 minutes after, add again The water of raw coating gross weight 9 ~ 11%, stirs 4 ~ 6 minutes, stirs, standby；
4）Tundish underwrites lining work（4）Dry materials construction, the regeneration dry materials are put into tundish bag bottom, shakeout, so Fully tamping afterwards, and surface is flattened into press polish；Underwrite lining work（4）Thickness a is 40~60mm；
5）By step 2）The working lining dry materials construction loose tool of preparation（12）It is placed into tundish and underwrites lining work (4) above, makes Two baffle plates（13）With containment wall permanent liner（8）It is close to, ensures seamless；
6) tundish containment wall working lining（5）Regeneration dry materials construction, working lining dry materials construction loose tool（12）Left and right two Baffle plate（13）Between not filler, i.e., in impact zone working lining（1）Build the position headspace of waste magnesia carbon brick by laying bricks or stones, and in headspace Outside, described regeneration dry materials are put into working lining dry materials construction loose tool（12）Side wall and containment wall permanent liner（8）Between Headspace outside gap in, the loose bed of material should be shakeout first after filler, depth of packing reach 500~600mm when, With pneumatic pick according to the uniform ramming jolt ramming of certain order after, then will regeneration dry filler to overfall position, again by loose material Layer shakeouts, ramming jolt ramming；
7）The shaping baking of working lining dry materials：1. by normal temperature uniformly, continuous warming to 120~150 DEG C, toast 50 ~ 60 minutes, fire Flame length is controlled in 400 ~ 450mm；2. toasted 60 ~ 70 minutes to 200~230 DEG C by 120~150 DEG C of uniform, continuous warmings, The length of flame is in 600 ~ 650mm；3. cooled down 4 ~ 8 hours after ceasing fire, working lining dry materials construction loose tool（12）Out of tundish It is proposed；
8）Turbulence inhibitor（3）Installation：By turbulence inhibitor（3）Interior patch tundish impact area end permanent liner（8）Installation, turbulent flow Beam center superposition in the center of controller and tundish；
9）Impact zone working lining is constructed：Turbulence inhibitor（3）Both sides and containment wall permanent liner（8）Between space（10）Outside, it is first First wall is built by laying bricks or stones with the waste magnesia carbon brick after processing and the regeneration coating pug wet method prepared（11）, then with waste material tamp space （10）, and and turbulence inhibitor（3）Upper surface level height it is identical, then with processing after waste magnesia carbon brick and prepare regeneration Coating pug wet method builds impact zone working lining by laying bricks or stones（1）, finally in waste magnesia carbon brick outer surface, waste material outer surface and turbulence inhibitor Upper surface smear one layer regeneration smear the bed of material（2）, impact zone working lining（1）Thickness x is 50~80mm, wall（11）Thickness k For 50~80mm, the bed of material is smeared in regeneration（2）Y is 15~30mm；
10）Tundish overfall working lining（7）And wrap along working lining（6）Regenerate coating construction：The regeneration of above-mentioned preparation is applied Skinning loam pug, construction overfall working lining is smeared using trowel（7）With bag along working lining（6）, wrap along working lining（6）Upper thickness B is 60~90mm, overfall working lining（7）Thickness z is 30~50mm, natural Health preservation 4 ~ 8 hours, continuous casting production reworked material work The preparation for making to serve as a contrast is completed.
A kind of 8. construction fetal membrane group for the continuous casting production reworked material working lining for being exclusively used in the preparation method described in claim 7 Part, it is characterised in that in continuous casting production working lining dry materials construction fetal membrane（12）On set up two baffle plates（13）, two baffle plates Respectively positioned at tundish impact area and non-percussion regional boundary face（C-C）Place, baffle plate（13）Width with corresponding bag along working lining（6） With containment wall working lining（5）Thickness is identical, i.e. upper thickness b is 60~90mm, and bottom thickness c is 40~60mm；Baffle plate（13）'s Effect is：Using working lining dry materials construction loose tool（12）Carry out tundish containment wall working lining（5）Dry materials construction when, into For the left baffle of dry materials, left baffle（13）Between not filler, so as in impact zone working lining（1）Build waste magnesia carbon brick by laying bricks or stones Position headspace.
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