CN106191923A - Electric tank cathode carbon block heating means and heater - Google Patents
Electric tank cathode carbon block heating means and heater Download PDFInfo
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- CN106191923A CN106191923A CN201610776110.6A CN201610776110A CN106191923A CN 106191923 A CN106191923 A CN 106191923A CN 201610776110 A CN201610776110 A CN 201610776110A CN 106191923 A CN106191923 A CN 106191923A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
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Abstract
The present invention relates to a kind of electric tank cathode carbon block heating means and heater, heater includes cathode carbon pieces and rectangular box, described rectangular box sidewall and top seal, bottom opening, is provided with along its length and adds heat pipe in described rectangular box；It is provided with locating support in described rectangular box；Add heat pipe to embed in detent；Described locating support inserts in the groove of cathode carbon pieces.Directly heating cap is heated on cathode carbon pieces；Heat time heating time is short, power consumption is little, can be with heating；Avoid the Secondary Transport of cathode carbon pieces, the cathode carbon pieces shown up can be directly heated；Not affected by the cathode carbon pieces quantity heated, every day, construction volume was flexible, for the overhaul engineering of the task weight that is pressed for time, break tour also can be used to construct continuously；Simple in construction, easy to operate, reduce labor strength, improve efficiency of construction, the reduction of erection time, safe and reliable, improve construction quality, reduce engineering cost.
Description
Technical field
The present invention relates to a kind of electrolysis bath construction method, specifically, relate to a kind of electric tank cathode carbon block heating side
Method.
Background technology
Heating before the assembling of current domestic electric tank cathode carbon block, the method that heating furnace is built in many employings by laying bricks or stones is carried out, and tradition adds
Heat furnace method construction process, its technique suffers from the drawback that
(1) needing to build cathode carbon pieces heating furnace in advance by laying bricks or stones, floor space is big.
(2) heating furnace heat time heating time is it is generally required to about 12 hours, heat time heating time length, power consumption big.
(3) the carbon block rehandling after heating furnace heating increases construction cost, and easily causes the breakage of material.
(4) heating the whole night, heat time heating time are carried out in needing cathode carbon pieces handling is entered heating furnace due to construction proxima luce (prox. luc)
Long, power consumption is big, and next day, construction work amount was restricted by the cathode carbon pieces quantity heated the day before yesterday, is likely to result in the work holdup existing
As, cause the waste of human resources.
Summary of the invention
For above-mentioned deficiency of the prior art, the present invention provides a kind of simple in construction, easy to operate, improves construction effect
Rate, reduces construction cost, reduces energy resource consumption, safe and reliable electric tank cathode carbon block heating means.
The technical solution used in the present invention is:
A kind of electric tank cathode carbon block heating means, comprise the steps:
Rod iron sand washing；
Overhead traveling crane, by cathode steel bar handling qualified for inspection to sand washing platform, shifts sand washing workshop onto；
Sand washing workshop air-introduced machine to be possessed, is extracted into quartz sand dust in workshop the dedusting workshop of outside, will draw by being flexible coupling
Blower fan couples together with dust arrester；
Dust pollution is dropped to discharge standard and just allows to construct by the sprinkling equipment in dust arrester, and remaining dust is by pipe
Road enters in air；
Blast nozzle is directed at sand washing face and carries out rod iron sand washing by the hand-held airduct of workmen；
Every time sand washing is one group with 10, exposes silver gray metallic luster when one side sand washing to its surface and is qualified, then makes
Rod iron, sand washing another side is stirred, until all sand washing is qualified with rod iron turner；
Material heats；
Thickener heats；
The kneading pot heating rod iron using about 1000L is stuck with paste, and in heating process, workmen uses infrared thermometer to carry out temperature
Control, preserve stand-by in the thickener heated is poured into couveuse；
Rod iron, carbon block heat
Use heating furnace to carry and carry out the heating of cathode steel bar the previous day；
Heating cap is used to carry out the heating of cathode steel bar and cathode carbon pieces；
Cathode carbon pieces assembles step；
Overhead traveling crane, by carbon block handling to assembly platform, uses compressed air by clean for purging in carbon block groove, it is ensured that not have before assembling
Stone can be started after dust foreign material；
Graphite powder is poured in carbon block groove by workmen, and uses scraper plate to be struck off by graphite powder；
Strike off rear overhead traveling crane by the clean rod iron handling of purging to carbon block groove, start to prick solid rod iron paste；
Workmen's use is made rifle firm by ramming and is combined with cathode steel bar rod iron paste by cathode carbon pieces；
Bottom land is built by laying bricks or stones；
Survey bottom land absolute altitude and then start pot shell unwrapping wire, cell body sidewall draws all refractory material absolute altitude control lines；
Lay the heat-insulating shield being made up of ceramic fibre and calcium silicate heat-preserving plate；
Paving heat-insulating shield spreads toward two ends from groove transversal line centrage, is not paved into straight joint, and with wooden mallet gently urgent；
Gap should be not more than 1mm, and fill up the space of heat-insulating shield and pot shell surrounding with dry type impervious material；
Dry method building heat-insulation brick；
The laid dry on calcium silicate board of one layer of heat preservation brick, interlayer brickwork joint interlocks；
Brickwork joint alumina powder fills up, and the insulating brick surrounding away from pot shell fills dry type impervious material；
Filling, compacting dry type impervious material；
Being poured into by material in groove, charging limit, limit rake is put down, and is paved with full groove；
Strike off with scraper plate；The material struck off covers Polypropylence Sheet；
Cover iron plate, two plate overlaps 200mm；
Vibrate with vibrator.Vibrator straight line is carried out；
Running route periphery-longitudinal direction-laterally；Guarantee edge and corner tamping；
The installation of carbon cathode blocks；
The most good and sound window board on the rod iron of carbon block group external part, and rod iron kraft paper is wrapped, then carry out installing and make
Industry；
Forbidding crowbar to damage carbon block and rod hole baffle plate when adjusting carbon block group, rod hole baffle plate leans on tight, in case inserts spills with pot shell；
Interspace between rod and baffle plate；
Gap error between carbon block group is ± 0.5mm, and adjacent two carbon block end face elevation differences are less than ± 5mm, and error in length is not
More than 10mm；
Between cathode steel bar and baffle edge, waterglass asbestos putty in gap fills up；Behind greasy stopper hole, carbon block group is inaccurate mobile；
During lower carbon block, for preventing from damaging dry type impervious material, spread steel plate the most temporarily；
Build by laying bricks or stones around groove；
The lightening casting material construction of cell body short side；
Short side cast lightening casting material；
Lightening casting material shakes with immersible concrete vibrator after adding, and exposes to surface swimming；
With sack or covered rearing with plastic film after cast, conditioned time is no less than 24 hours；
After cast, the surface of castable is level, and surface irregularity degree is not more than 2mm；
Big face is against pot shell sidepiece steel plate, one layer of ceramic beaverboard of laid dry and one layer low strong insulating brick, and gross thickness is 85mm；
In insulating brick upper berth layer of plastic film；
Short side and the castable in big face, cast rear surface is level, and its surface irregularity degree is not more than 2mm；
The refractory brick building one layer of δ=65mm on castable is levelling；
Sidepiece charcoal silicon nitride bonded silicon block is built by laying bricks or stones；
Being cleaned out by mud on dirt on pot shell and surrounding brick surface before building by laying bricks or stones, the side block both sides that preparation is built by laying bricks or stones are in advance
Polish；
Side block is built by laying bricks or stones as laid dry, it is necessary to start operation from corner, is arranged to A, B, C, D tetra-jiaos, and AB Yu CD is long side.
AC, BD are termination minor face, after four angle carbon block puzzle, start to prolong clockwise direction from A angle and start to build by laying bricks or stones, close door at B angle；
The dorsal suture of corner carbon block and side block alumina powder is filled, and after pricking admittedly, dorsal suture also needs secondary to fill；
Charcoal is stuck with paste and is pricked admittedly；
Prick solid vertical seam；
Before electrolysis bath heating, applied compression air is cleaned out in groove, then carries out heating operation, and vertical seam heating uses self-control
Adding heat pipe to heat, the vertical seam of per pass is placed one group and is added heat pipe, and often group adds heat pipe and added heat pipe by 3 and form；
Add paste layer time and make size firm by ramming；
Prick solid seam around；
Around sticking with paste after pricking solid to the 4th layer, its face is put down with cast bed of material surface, long side；
Being divided in two parts and carry out, seam is located at short side；
All spraying one layer of cut-back asphalt with sticking with paste contact site, thickness is about 0.5mm；
Each point of flute length side has been pricked for 6 times, and the short side of groove divides 10 bundles solid；
Slope is divided 3 times and is made firm by ramming, and during work, tamping tool blast is not less than 0. 6MPa, and compression ratio is (1.6～1.8): 1；
When pricking solid slope, for making interlayer linking firmly, with claw type beater, surface is broken into pitted skin, then repave paste and prick solid.Around
Sticking with paste joint to toast with fired heater, brigadier does not sticks with paste compound of charring, and heating-up temperature is 90～115 DEG C；
The upper surface sticking with paste last layer around pricking is same high with vertical seam carbon cap by its apparent height of blowing-in burden(ing) block side, and is pressed into surface of the block
About 10mm, avris hand hammer press polish makes surfacing bright and clean, without pitted skin.
It is 100 DEG C ± 10 DEG C that described rod iron sticks with paste heating temperature range.
Described cathode steel bar preheating temperature is 100 DEG C ± 10 DEG C, is respectively surveying 1 point with central authorities at the 650mm of rod iron both ends,
And make its surface cleaning；Winter heat time heating time of rod iron and carbon block is not less than 12h, is not less than 10h summer, and temperature range controls
100℃±10℃。
A kind of cathode carbon pieces heater, including cathode carbon pieces and rectangular box, described rectangular box sidewall and top envelope
Close, bottom opening, be provided with along its length in described rectangular box and add heat pipe；
It is provided with locating support in described rectangular box；
Locating support top is connected with rectangular box top；
The described heat pipe that adds is arranged on locating support；
It is provided with detent on described locating support；
Add heat pipe to embed in detent；
Described locating support inserts in the groove of cathode carbon pieces；
Cathode carbon pieces is buckled in the cavity of rectangular box by described rectangular box；
The top of rectangular box left end face is provided with left hand grip；
The top of rectangular box its right end face is provided with right hand grip；
Described left hand grip and right hand grip are respectively two, and left hand grip includes left side front handle and left back handle；
Right hand grip includes right front handle and right side back handle.
Described heat pipe of building is made up of layer 2-3, and every layer of quantity adding heat pipe is that 3-5 props up.
Described locating support is 2-3 group..
The beneficial effect of hinge structure of the present invention:
Electric tank cathode carbon block heating means of the present invention, simple in construction, easy to operate, reduce labor strength, improve construction
Efficiency, the reduction of erection time, safe and reliable, improve construction quality, reduce engineering cost.
Electric tank cathode carbon block heating means of the present invention, remove and build heating furnace link by laying bricks or stones, use heating cap cathode blocks
Heat.Have only to according to quantities and schedule, the quantity of reasonable arrangement heating cap.
Electric tank cathode carbon block heating means of the present invention, cathode carbon pieces heating technique, with little need for occupation of land, directly will add
Hot tap covers and heats on cathode carbon pieces；Heat time heating time is short, power consumption is little, can be with heating；Avoid cathode carbon pieces
Secondary Transport, can directly heat the cathode carbon pieces shown up；Do not affected by the cathode carbon pieces quantity heated, every day construction volume
Flexibly, for the overhaul engineering of the task weight that is pressed for time, break tour also can be used to construct continuously.
Accompanying drawing explanation
Fig. 1 is electric tank cathode carbon block heating means process chart of the present invention；
Fig. 2 is the plan structure schematic diagram of cathode carbon pieces heater of the present invention；
Fig. 3 is the A-A sectional structure schematic diagram of Fig. 2；
Fig. 4 is the B-B sectional structure schematic diagram of Fig. 2；
Fig. 5 is the cathode carbon pieces sectional structure schematic diagram of cathode carbon pieces heater of the present invention；
Fig. 6 is that cathode carbon pieces heater of the present invention removes the sectional structure schematic diagram adding heat pipe.
Critical piece symbol description in accompanying drawing:
In figure:
1, cathode carbon pieces 2, rectangular box
3, heat pipe 4, locating support are added
5, the groove of detent 6, cathode carbon pieces
7, the cavity 8 of rectangular box, left hand grip
9, right hand grip.
Detailed description of the invention
Referring to the drawings and embodiment the present invention will be described in detail:
Accompanying drawing 1-6 understands, a kind of electric tank cathode carbon block heating means, comprises the steps:
Rod iron sand washing；
Overhead traveling crane, by cathode steel bar handling qualified for inspection to sand washing platform, shifts sand washing workshop onto；
Sand washing workshop air-introduced machine to be possessed, is extracted into quartz sand dust in workshop the dedusting workshop of outside, will draw by being flexible coupling
Blower fan couples together with dust arrester；
Dust pollution is dropped to discharge standard and just allows to construct by the sprinkling equipment in dust arrester, and remaining dust is by pipe
Road enters in air；
Blast nozzle is directed at sand washing face and carries out rod iron sand washing by the hand-held airduct of workmen；
Every time sand washing is one group with 10, exposes silver gray metallic luster when one side sand washing to its surface and is qualified, then makes
Rod iron, sand washing another side is stirred, until all sand washing is qualified with rod iron turner；
The good Rainproof moisture-proof measure of rod iron that sand washing is good, flitch of bottom pad 50 × 50mm；
Material heats；
Thickener heats；
The kneading pot heating rod iron using about 1000L is stuck with paste, and in heating process, workmen uses infrared thermometer to carry out temperature
Control, preserve stand-by in the thickener heated is poured into couveuse；
Rod iron, carbon block heat
Use heating furnace to carry and carry out the heating of cathode steel bar the previous day；
Heating cap is used to carry out the heating of cathode steel bar and cathode carbon pieces；
Cathode carbon pieces assembles step；
Overhead traveling crane, by carbon block handling to assembly platform, uses compressed air by clean for purging in carbon block groove, it is ensured that not have before assembling
Stone can be started after dust foreign material；
Graphite powder is poured in carbon block groove by workmen, and uses scraper plate to be struck off by graphite powder；
Strike off rear overhead traveling crane by the clean rod iron handling of purging to carbon block groove, start to prick solid rod iron paste；
Workmen's use is made rifle firm by ramming and is combined with cathode steel bar rod iron paste by cathode carbon pieces；
Cathode steel bar longitudinal center line must match with carbon block steel bar trough longitudinal center line, and deviation is forbidden to exceed carbon block length
1 ‰, the most no more than 3.38mm, after rod iron assembles, total length deviation is not more than ± 15mm, and flexibility is not more than 3mm.
Secondary of level three times four times five times six times seven times
Make rear thickness (mm) 35 35 35 35 30 30 30 firm by ramming.
Blast when making firm by ramming is not less than 0.6Mpa；Pricking solid compression ratio is: (1.6～1.8): 1.
Carbon block surface and rod iron surface, rod iron surface and cathode carbon pieces surface spacing 0-3mm is measured, it is impossible to prominent after assembling
Cathode carbon pieces.
Compactor stroke moves about 1cm every time, forbids to smash cone and breaks carbon block.Prevent foreign body from entering in paste.
Bottom land is built by laying bricks or stones；
Survey bottom land absolute altitude and then start pot shell unwrapping wire, cell body sidewall draws all refractory material absolute altitude control lines；
Lay the heat-insulating shield being made up of ceramic fibre and calcium silicate heat-preserving plate；
Paving heat-insulating shield spreads toward two ends from groove transversal line centrage, is not paved into straight joint, and with wooden mallet gently urgent；
Gap should be not more than 1mm, and fill up the space of heat-insulating shield and pot shell surrounding with dry type impervious material；
Dry method building heat-insulation brick；
The laid dry on calcium silicate board of one layer of heat preservation brick, interlayer brickwork joint interlocks；
Brickwork joint alumina powder fills up, and the insulating brick surrounding away from pot shell fills dry type impervious material；
Filling, compacting dry type impervious material；
Being poured into by material in groove, charging limit, limit rake is put down, and is paved with full groove；
Strike off with scraper plate；The material struck off covers Polypropylence Sheet；
Cover iron plate, two plate overlaps 200mm；
Vibrate with vibrator.Vibrator straight line is carried out；
Running route periphery-longitudinal direction-laterally；Guarantee edge and corner tamping；
Check tamping material surface appearance and height, it is desirable to surface is horizontal, and its flatness tolerance is △ 2mm, and it is the most public
Difference is △ ± 1.5mm；
Dry Impervious Materials should be positioned over and be dried place, prevent into water；Just can vibrate after striking off material, otherwise tamping material surface there will be
Loose material speckle；The material surface struck off, forbids that people steps on；Reduce people after material tamping to walk about above as far as possible.If can not be at once
Carbon cathode blocks is installed, its surface should be protected not go to pot；Dry Impervious Materials thickness after tamping by design drawing requirement, filling
The compression ratio that bulk cargo height is provided by manufacturer determines after field test.
The installation of carbon cathode blocks；
The most good and sound window board on the rod iron of carbon block group external part, and rod iron kraft paper is wrapped, then carry out installing and make
Industry；
Forbidding crowbar to damage carbon block and rod hole baffle plate when adjusting carbon block group, rod hole baffle plate leans on tight, in case inserts spills with pot shell；
Interspace between rod and baffle plate；
Gap error between carbon block group is ± 0.5mm, and adjacent two carbon block end face elevation differences are less than ± 5mm, and error in length is not
More than 10mm；
Between cathode steel bar and baffle edge, waterglass asbestos putty in gap fills up；Behind greasy stopper hole, carbon block group is inaccurate mobile；
During lower carbon block, for preventing from damaging dry type impervious material, spread steel plate the most temporarily；
Build by laying bricks or stones around groove；
The lightening casting material construction of cell body short side；
Short side cast lightening casting material；
Lightening casting material shakes with immersible concrete vibrator after adding, and exposes to surface swimming；
With sack or covered rearing with plastic film after cast, conditioned time is no less than 24 hours；
After cast, the surface of castable is level, and surface irregularity degree is not more than 2mm；
Big face is against pot shell sidepiece steel plate, one layer of ceramic beaverboard of laid dry and one layer low strong insulating brick, and gross thickness is 85mm；
In insulating brick upper berth layer of plastic film；
Short side and the castable in big face, cast rear surface is level, and its surface irregularity degree is not more than 2mm；
The refractory brick building one layer of δ=65mm on castable is levelling；
Sidepiece charcoal silicon nitride bonded silicon block is built by laying bricks or stones；
Being cleaned out by mud on dirt on pot shell and surrounding brick surface before building by laying bricks or stones, the side block both sides that preparation is built by laying bricks or stones are in advance
Polish；
Side block is built by laying bricks or stones as laid dry, it is necessary to start operation from corner, is arranged to A, B, C, D tetra-jiaos, and AB Yu CD is long side.
AC, BD are termination minor face, after four angle carbon block puzzle, start to prolong clockwise direction from A angle and start to build by laying bricks or stones, close door at B angle；
Masonry quality requires vertical seam less than 0.5mm, and sleeping seam is less than 2mm less than 1mm, dorsal suture, and faulting of slab ends is less than 3mm.
Building and adjust side block by laying bricks or stones should use wooden mallet to beat, and forbids to use metal hammer to beat.With antisitic defect side block.Sidepiece
Between block and pot shell, gap uses refractory wass to tamp.
The dorsal suture of corner carbon block and side block alumina powder is filled, and after pricking admittedly, dorsal suture also needs secondary to fill；
Charcoal is stuck with paste and is pricked admittedly；
Prick solid vertical seam；
Before electrolysis bath heating, applied compression air is cleaned out in groove, then carries out heating operation, and vertical seam heating uses self-control
Adding heat pipe to heat, the vertical seam of per pass is placed one group and is added heat pipe, and often group adds heat pipe and added heat pipe by 3 and form；
One electrolysis bath places 25 groups, calculates by pricking solid 2 electrolysis baths every day, needs altogether heater 50 groups.
Heat time heating time in winter is not less than 12h, and heat time heating time in summer is no less than 10h, and heating and temperature control is 100 ± 10 DEG C.
Prick before Gu Pu sticks with paste and again blow cleaning；Measuring cathode carbon pieces heating-up temperature, every piece of cathode carbon pieces surveys 3 points；Inoperative people
Member is prohibited from entering in groove, and operating personnel's sole must keep clean；Carbon block vertical seam in pole is all coated with one layer of Colophonium and coal tar, thickness
About 0.5mm；Adding paste according to quantity, application model strikes off, then carries out pricking solid operation.Prick solid once reciprocal no less than two, vertical seam point
Pricked for eight times, above three times need to guide plate guide make firm by ramming, in case breaking carbon block, operating point blast is not less than 0.6Mpa, compression ratio
For (1.6～1.8): 1；Prick solid charcoal cap to carry out in template, in case breaking carbon block.Charcoal cap should exceed cathode carbon pieces upper surface,
But must not exceed 5mm, width 50mm, scalps two side burr and uses hand hammer press polish, making surfacing, smooth, without pitted skin.
Add paste layer time and make size (vertical seam) firm by ramming；
For the first time, for the second time, for the third time, the 4th time, the 5th time, the 6th time, the 7th time, the 8th time make rear thickness (mm) firm by ramming
It is followed successively by: 65,65,65,65,65,55,50 and 55 mm；
Prick solid seam around；
Around sticking with paste after pricking solid to the 4th layer, its face is put down with cast bed of material surface, long side；
Being divided in two parts and carry out, seam is located at short side；
Requiring the application fired heater baking of seam heating around, should blow cleaning before heating, heating-up temperature is 90～115 DEG C
(before and after Fen, district's two parts respectively survey 3 points at two and central authorities).
All spraying one layer of cut-back asphalt with sticking with paste contact site, thickness is about 0.5mm；
Each point of flute length side has been pricked for 6 times, and the short side of groove divides 10 bundles solid；
Slope is divided 3 times and is made firm by ramming, and during work, tamping tool blast is not less than 0. 6MPa, and compression ratio is (1.6～1.8): 1；
When pricking solid slope, for making interlayer linking firmly, with claw type beater, surface is broken into pitted skin, then repave paste and prick solid.Around
Sticking with paste joint to toast with fired heater, brigadier does not sticks with paste compound of charring, and heating-up temperature is 90～115 DEG C；
The upper surface sticking with paste last layer around pricking is same high with vertical seam carbon cap by its apparent height of blowing-in burden(ing) block side, and is pressed into surface of the block
About 10mm, avris hand hammer press polish makes surfacing bright and clean, without pitted skin.
It is 100 DEG C ± 10 DEG C that described rod iron sticks with paste heating temperature range.
Described cathode steel bar preheating temperature is 100 DEG C ± 10 DEG C, is respectively surveying 1 point with central authorities at the 650mm of rod iron both ends,
And make its surface cleaning；Winter heat time heating time of rod iron and carbon block is not less than 12h, is not less than 10h summer, and temperature range controls
100℃±10℃。
A kind of cathode carbon pieces heater assembly, including cathode carbon pieces 1 and rectangular box 2, described rectangular box 2 sidewall and
Top seal, bottom opening, it is provided with along its length in described rectangular box 2 and adds heat pipe 3；
It is provided with locating support 4 in described rectangular box 2；
Locating support 4 top is connected with rectangular box 2 top；
The described heat pipe 3 that adds is arranged on locating support 4；
It is provided with detent 5 on described locating support 4；
Add heat pipe 3 to embed in detent 5；
Described locating support 4 inserts in the groove 6 of cathode carbon pieces；
Cathode carbon pieces 1 is buckled in the cavity 7 of rectangular box by described rectangular box 2；
The top of rectangular box 2 left end face is provided with left hand grip 8；
The top of rectangular box 2 its right end face is provided with right hand grip 9；
Described left hand grip and right hand grip are respectively two, and left hand grip includes left side front handle and left back handle；
Right hand grip includes right front handle and right side back handle.
Described heat pipe 3 of building is made up of layer 2-3, and every layer of quantity adding heat pipe is that 3-5 props up.
Described locating support 4 is 2-3 group.
(1) heating cap field fabrication, its cost of manufacture is low, and selection is convenient, also can install temperature monitoring apparatus, effectively control
Cathode carbon pieces heating-up temperature processed, it is to avoid the problems such as heating-up temperature is inadequate and overheated.
(2) cathode blocks heats, and before construction on the same day, half an hour will heat cap at the cathode carbon pieces cleaned out
On, switch on power, heating process is measured heating-up temperature at any time, treat that temperature reaches specification and the temperature designing requirement gets final product (about
Half an hour).Now close power supply, heating cap is moved to heat on other cathode carbon pieces.
(3) cathode carbon pieces heated is hoisted to assembling position and carries out the making of cathode block group.
(4) heating cap cathode blocks is heated to specification and design requires it is generally required to about 30 minutes, and completes one piece
The making of carbon cathode blocks takes around about 15 minutes, and therefore two heating caps can meet the requirement that Infinite Cyclic uses.
Cathode carbon pieces heater of the present invention, simple in construction, the problem solving occupation of land in cathode carbon pieces heating process,
Shorten heat time heating time, only need to heat before cathode carbon pieces assembles and just can meet the temperature that detail design requires more than half a hour；
While satisfied design requires, save electric power resource, reduce the labor intensity of workman, reduce the handling time of cathode carbon pieces
Number, reduces construction cost, improves efficiency of construction.
Cathode carbon pieces heater construction precautions of the present invention:
(1) making of heating cap insulation processing to be carried out, prevents electric leakage from damaging personnel.
(2) to cut off the electricity supply during transfer heating cap after cathode carbon pieces heating-up temperature is up to standard, forbid hot line job.
The above, be only presently preferred embodiments of the present invention, and not the structure to the present invention is made any pro forma
Limit.Every any simple modification, equivalent variations and modification above example made according to the technical spirit of the present invention, all
In the range of belonging to technical scheme.
Claims (7)
1. electric tank cathode carbon block heating means, it is characterised in that comprise the steps:
Rod iron sand washing；
Overhead traveling crane, by cathode steel bar handling qualified for inspection to sand washing platform, shifts sand washing workshop onto；
Sand washing workshop air-introduced machine to be possessed, is extracted into quartz sand dust in workshop the dedusting workshop of outside, will draw by being flexible coupling
Blower fan couples together with dust arrester；
Dust pollution is dropped to discharge standard and just allows to construct by the sprinkling equipment in dust arrester, and remaining dust is by pipe
Road enters in air；
Blast nozzle is directed at sand washing face and carries out rod iron sand washing by the hand-held airduct of workmen；
Every time sand washing is one group with 10, exposes silver gray metallic luster when one side sand washing to its surface and is qualified, then makes
Rod iron, sand washing another side is stirred, until all sand washing is qualified with rod iron turner；
Material heats；
Thickener heats；
The kneading pot heating rod iron using about 1000L is stuck with paste, and in heating process, workmen uses infrared thermometer to carry out temperature
Control, preserve stand-by in the thickener heated is poured into couveuse；
Rod iron, carbon block heat
Use heating furnace to carry and carry out the heating of cathode steel bar the previous day；
Heating cap is used to carry out the heating of cathode steel bar and cathode carbon pieces；
Cathode carbon pieces assembles step；
Overhead traveling crane, by carbon block handling to assembly platform, uses compressed air by clean for purging in carbon block groove, it is ensured that not have before assembling
Stone can be started after dust foreign material；
Graphite powder is poured in carbon block groove by workmen, and uses scraper plate to be struck off by graphite powder；
Strike off rear overhead traveling crane by the clean rod iron handling of purging to carbon block groove, start to prick solid rod iron paste；
Workmen's use is made rifle firm by ramming and is combined with cathode steel bar rod iron paste by cathode carbon pieces；
Bottom land is built by laying bricks or stones；
Survey bottom land absolute altitude and then start pot shell unwrapping wire, cell body sidewall draws all refractory material absolute altitude control lines；
Lay the heat-insulating shield being made up of ceramic fibre and calcium silicate heat-preserving plate；
Paving heat-insulating shield spreads toward two ends from groove transversal line centrage, is not paved into straight joint, and with wooden mallet gently urgent；
Gap should be not more than 1mm, and fill up the space of heat-insulating shield and pot shell surrounding with dry type impervious material；
Dry method building heat-insulation brick；
The laid dry on calcium silicate board of one layer of heat preservation brick, interlayer brickwork joint interlocks；
Brickwork joint alumina powder fills up, and the insulating brick surrounding away from pot shell fills dry type impervious material；
Filling, compacting dry type impervious material；
Being poured into by material in groove, charging limit, limit rake is put down, and is paved with full groove；
Strike off with scraper plate；The material struck off covers Polypropylence Sheet；
Cover iron plate, two plate overlaps 200mm；
Vibrate with vibrator；
Vibrator straight line is carried out；
Running route periphery-longitudinal direction-laterally；Guarantee edge and corner tamping；
The installation of carbon cathode blocks；
The most good and sound window board on the rod iron of carbon block group external part, and rod iron kraft paper is wrapped, then carry out installing and make
Industry；
Forbidding crowbar to damage carbon block and rod hole baffle plate when adjusting carbon block group, rod hole baffle plate leans on tight, in case inserts spills with pot shell；
Interspace between rod and baffle plate；
Gap error between carbon block group is ± 0.5mm, and adjacent two carbon block end face elevation differences are less than ± 5mm, and error in length is not
More than 10mm；
Between cathode steel bar and baffle edge, waterglass asbestos putty in gap fills up；Behind greasy stopper hole, carbon block group is inaccurate mobile；
During lower carbon block, for preventing from damaging dry type impervious material, spread steel plate the most temporarily；
Build by laying bricks or stones around groove；
The lightening casting material construction of cell body short side；
Short side cast lightening casting material；
Lightening casting material shakes with immersible concrete vibrator after adding, and exposes to surface swimming；
With sack or covered rearing with plastic film after cast, conditioned time is no less than 24 hours；
After cast, the surface of castable is level, and surface irregularity degree is not more than 2mm；
Big face is against pot shell sidepiece steel plate, one layer of ceramic beaverboard of laid dry and one layer low strong insulating brick, and gross thickness is 85mm；
In insulating brick upper berth layer of plastic film；
Short side and the castable in big face, cast rear surface is level, and its surface irregularity degree is not more than 2mm；
The refractory brick building one layer of δ=65mm on castable is levelling；
Sidepiece charcoal silicon nitride bonded silicon block is built by laying bricks or stones；
Being cleaned out by mud on dirt on pot shell and surrounding brick surface before building by laying bricks or stones, the side block both sides that preparation is built by laying bricks or stones are in advance
Polish；
Side block is built by laying bricks or stones as laid dry, it is necessary to start operation from corner, is arranged to A, B, C, D tetra-jiaos, and AB Yu CD is long side；
AC, BD are termination minor face, after four angle carbon block puzzle, start to prolong clockwise direction from A angle and start to build by laying bricks or stones, close at B angle
Door；
The dorsal suture of corner carbon block and side block alumina powder is filled, and after pricking admittedly, dorsal suture also needs secondary to fill；
Charcoal is stuck with paste and is pricked admittedly；
Prick solid vertical seam；
Before electrolysis bath heating, applied compression air is cleaned out in groove, then carries out heating operation, and vertical seam heating uses self-control
Adding heat pipe to heat, the vertical seam of per pass is placed one group and is added heat pipe, and often group adds heat pipe and added heat pipe by 3 and form；
Add paste layer time and make size firm by ramming；
Prick solid seam around；
Around sticking with paste after pricking solid to the 4th layer, its face is put down with cast bed of material surface, long side；
Being divided in two parts and carry out, seam is located at short side；
All spraying one layer of cut-back asphalt with sticking with paste contact site, thickness is about 0.5mm；
Each point of flute length side has been pricked for 6 times, and the short side of groove divides 10 bundles solid；
Slope is divided 3 times and is made firm by ramming, and during work, tamping tool blast is not less than 0. 6MPa, and compression ratio is (1.6～1.8): 1；
When pricking solid slope, for making interlayer linking firmly, with claw type beater, surface is broken into pitted skin, then repave paste and prick solid；
Around sticking with paste joint to toast with fired heater, brigadier does not sticks with paste compound of charring, and heating-up temperature is 90～115 DEG C；
The upper surface sticking with paste last layer around pricking is same high with vertical seam carbon cap by its apparent height of blowing-in burden(ing) block side, and is pressed into surface of the block
About 10mm, avris hand hammer press polish makes surfacing bright and clean, without pitted skin.
Electric tank cathode carbon block heating means the most according to claim 1, it is characterised in that: described rod iron sticks with paste heating-up temperature model
Enclose is 100 DEG C ± 10 DEG C.
Electric tank cathode carbon block heating means the most according to claim 1, it is characterised in that: described cathode steel bar preheating temperature
It is 100 DEG C ± 10 DEG C, at the 650mm of rod iron both ends, is respectively surveying 1 point with central authorities, and make its surface cleaning；Rod iron and carbon block
Winter heat time heating time is not less than 12h, is not less than 10h summer, and temperature range controls at 100 DEG C ± 10 DEG C.
4. using a cathode carbon pieces heater for electric tank cathode carbon block heating means described in claim 1, its feature exists
In: including cathode carbon pieces and rectangular box, described rectangular box sidewall and top seal, bottom opening, in described rectangular box
It is provided with along its length and adds heat pipe；
It is provided with locating support in described rectangular box；
Locating support top is connected with rectangular box top；
The described heat pipe that adds is arranged on locating support；
It is provided with detent on described locating support；
Add heat pipe to embed in detent；
Described locating support inserts in the groove of cathode carbon pieces；
Cathode carbon pieces is buckled in the cavity of rectangular box by described rectangular box；
The top of rectangular box left end face is provided with left hand grip；
The top of rectangular box its right end face is provided with right hand grip.
Cathode carbon pieces heater the most according to claim 4, it is characterised in that: described left hand grip and right hand grip are respectively
Being two, left hand grip includes left side front handle and left back handle；Right hand grip includes right front handle and right side
Back handle.
Cathode carbon pieces heater the most according to claim 4, it is characterised in that build heat pipe described in: and be made up of layer 2-3, every layer
The quantity adding heat pipe is that 3-5 props up.
Cathode carbon pieces heater the most according to claim 4, it is characterised in that: described locating support is 2-3 group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776110.6A CN106191923A (en) | 2016-08-31 | 2016-08-31 | Electric tank cathode carbon block heating means and heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610776110.6A CN106191923A (en) | 2016-08-31 | 2016-08-31 | Electric tank cathode carbon block heating means and heater |
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| Publication Number | Publication Date |
|---|---|
| CN106191923A true CN106191923A (en) | 2016-12-07 |
Family
ID=58089929
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610776110.6A Pending CN106191923A (en) | 2016-08-31 | 2016-08-31 | Electric tank cathode carbon block heating means and heater |
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| CN (1) | CN106191923A (en) |
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| EP0905284A1 (en) * | 1994-09-08 | 1999-03-31 | MOLTECH Invent S.A. | Aluminium electrowinning cell with drained cathode |
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Application publication date: 20161207 |