CN103726072A - Anti-seepage method for aluminium electrolytic cell - Google Patents
Anti-seepage method for aluminium electrolytic cell Download PDFInfo
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Abstract
The invention discloses an anti-seepage method for aluminium electrolytic cells, and relates to an anti-seepage method used for the aluminium electrolytic cells in nonferrous metallurgical industry to prevent low-temperature electrolyte fused salts containing sylvite from seeping into the electrolytic cells. The anti-seepage method is characterized by adopting and uniformly mixing 55%-65wt% of fire-proof granules, 30%-40wt% of fire-proof powder, and 1%-7% of an additive as anti-seepage materials; during utilization of the electrolytic cells in furnace building, the anti-seepage materials are uniformly paved above thermal insulation materials and are tamped, a layer of admixture is uniformly scattered on the surface layer of the tamped anti-seepage materials, then inner lining materials are paved, and the furnace building is finished. Through adopting the method, further seepage from the low-temperature electrolyte fused salts containing sylvite to the thermal insulation materials of the electrolytic cells is effectively blocked, and the service lives of the electrolytic cells are prolonged; besides, the method can be used in common electrolytic cells, the pavement thickness and usage amount of the anti-seepage materials can be reduced, so that the construction cost and maintenance cost of the electrolytic cells can be effectively reduced.
Description
Technical field
An anti-seepage method for aluminium cell, relates to a kind of nonferrous metallurgy industry aluminium cell for resisting the anti-seepage method to electrolyzer infiltration containing sylvite low-temperature electrolytes fused salt.
Background technology
Impervious Materials is as the thermal-insulating leakage-resistant material of aluminium cell, it mainly utilizes chemical antiseepage principle, with by cathode carbon pieces, permeate the ionogen getting off and react the glassy nepheline layer that generates one deck densification, thereby effectively stop and suppress the destruction of liquid electrolytic confrontation electrolyzer bottom thermal insulation layer, improve bath life, reduce bottom land pressure drop, extend the electric tank working cycle.
In conventional aluminum electrolytic process, the ionogen of employing is mainly sodium cryolite, and its fusing point is high, and under high temperature, viscosity is large, and common Impervious Materials can stop that it further permeates.Application number is that a Chinese patent < < antierosion fireproof material for aluminium electrolyzer of 96120239.4 and preparation method thereof > > discloses a kind of antierosion fireproof material for aluminium electrolyzer and preparation method thereof, it can stop electrolyte permeability, extends electrolyzer work-ing life; Application number is that 201210090353.6 Chinese patent < < environment-friendly and energy-efficient Impervious Materials and manufacture method > > thereof disclose a kind of environment-friendly and energy-efficient Impervious Materials and manufacture method thereof, it is mainly to utilize coal ash for manufacturing for Impervious Materials, reduce costs save energy.Above-mentioned patented technology for ionogen be mainly sodium cryolite, at traditional electrolyzer, obtained good effect.
Along with aluminium industrial expansion and the energy-saving and cost-reducing further raising requiring, the application that low-temperature aluminum electrolysis technology progressively moves towards the industrialization.The principal character of low-temperature aluminum electrolysis adopts low-temperature electrolyte system exactly.Low-temperature electrolyte system generally has relatively low fusing point and liquidus temperature, and low-temperature electrolytes in use generally needs relatively high superheating temperature, to guarantee that low-temperature electrolytes has good electroconductibility and the dissolving power to aluminum oxide.
In low-temperature electrolyte system, mostly by add AlF in sodium cryolite
3, KF, LiF, CaF
2, KCl, AlCl
3, NaCl, BaCl
2deng realizing.And in current inert anode aluminum electrolyzation technology, adopt KF-AlF
3, NaF-KF-AlF
3system more.This ionogen at high temperature viscosity is little, adds superheating temperature large, and its penetrating power is extremely strong.And due to the existence of sylvite, after ionogen contacts with Impervious Materials, affected growing amount and the viscosity of nepheline, electrolytical depth of penetration is significantly improved, when serious, can make Impervious Materials lose antiseepage effect.Therefore, for the electrolyzer adopting containing sylvite low-temperature electrolytes, still adopt common Impervious Materials and original using method, can not meet brickwork requirement, runout risk can significantly increase.
But, about the applied research of this respect also there are no disclosed report.Therefore, be necessary to develop a kind of Impervious Materials preparation and operation technique, for resisting the infiltration to electrolyzer containing sylvite low-temperature electrolytes fused salt, to meet low-temperature aluminum electrolysis process or the requirement of noble electrode aluminum electrolysis process.
summary of the invention
Object of the present invention is exactly the deficiency existing for above-mentioned prior art, provide a kind of for resisting the infiltration to electrolyzer containing sylvite low-temperature electrolytes fused salt, to meet the anti-seepage method of aluminium cell of low-temperature aluminum electrolysis process or noble electrode aluminum electrolysis process needs.
For achieving the above object, the present invention adopts following method to realize.
An anti-seepage method for aluminium cell, is characterized in that adopting refractory particle 55%-65wt%, refractory powder 30%-40wt%, the even mixture of additive 1%-7% to become Impervious Materials; When electrolyzer brickwork is used, Impervious Materials uniform spreading is also jolt ramming above lagging material, then on its top layer, evenly sprinkles one deck admixture, repaves inner lining material, completes brickwork.
The anti-seepage method of a kind of aluminium cell of the present invention, is characterized in that mixture Impervious Materials process is that refractory particle, refractory powder, additive are mixed, and controls its Al
2o
3with SiO
2the ratio of overall quality content is 0.85-1.1, Al
2o
3with SiO
2overall quality content sum is greater than 85wt%, and natural packing density is 1.55-1.65 g/cm
3, tap density is greater than 1.9g/cm
3.
The anti-seepage method of a kind of aluminium cell of the present invention, is characterized in that described refractory particle is selected from one or the arbitrary combination in flint clay grog, bauxitic clay grog, fused mullite, flint clay grog, and its granularity is 0-8mm; Adopt in 0-1mm, 0.5-1mm, 1-2mm, 1-3mm, 3-5mm, 3-6mm, 6-8mm granularity 3 kinds or 3 kinds to carry out above that grade is joined or natural grading.
The anti-seepage method of a kind of aluminium cell of the present invention, is characterized in that described refractory powder is selected from two kinds or arbitrary combination in flint clay grog, bauxitic clay grog, fused mullite, chamotte, albite in powder, silica powder, and its granularity is less than 0.2mm.Adopt fine powder (granularity 0.1-0.2mm), micro mist (granularity is less than 0.1mm) to carry out that grade is joined or natural grading.
The anti-seepage method of a kind of aluminium cell of the present invention, is characterized in that described additive is by one or both combinations in boron oxide, boric anhydride, borax, and its purity is greater than 95%, and granularity is less than 0.2mm.
The anti-seepage method of a kind of aluminium cell of the present invention, is characterized in that described Impervious Materials prepared long-term placement or obviously moist, needs before use to carry out drying treatment, and drying temperature is less than 200 ℃.
The anti-seepage method of a kind of aluminium cell of the present invention, it is characterized in that described admixture is selected from one or more combinations in boron oxide, boric anhydride, borax, calcined soda for industry, Sodium Fluoride, lime powder, calcium carbonate powders, magnesia, silicon powder, silica powder, and its mean thickness being sprinkling upon above Impervious Materials is greater than 0.5mm.
The anti-seepage method of a kind of aluminium cell of the present invention, it is characterized in that described admixture is commercial alumina, and its mean thickness being sprinkling upon above Impervious Materials is greater than 5mm.
The anti-seepage method of a kind of aluminium cell of the present invention, it is characterized in that one or more combination mixtures that described admixture is selected from boron oxide, boric anhydride, borax, calcined soda for industry, lime powder, calcium carbonate powders, Sodium Fluoride, magnesia, silicon powder, silica powder below by commercial alumina more than 80wt% and 20wt% form, and its mean thickness being sprinkling upon above Impervious Materials is greater than 1mm.
The anti-seepage method of a kind of aluminium cell of the present invention, can effectively stop the further infiltration that contains sylvite low-temperature electrolytes fused salt, extends the life-span of electrolyzer, reduces brickwork, maintenance cost.In addition, can also be used for conventional electrolysis groove, can effectively reduce laying depth and the usage quantity of Impervious Materials, thereby reduce brickwork and electrolyzer construction cost.
Embodiment
An anti-seepage method for aluminium cell, for resisting the infiltration to electrolyzer thermal insulation layer containing sylvite low-temperature electrolytes fused salt, it adopts refractory particle 55-65wt%, refractory powder 30-40wt%, the even mixture of additive 1-7% to become Al
2o
3with SiO
2the ratio of overall quality content is 0.85-1.1, Al
2o
3with SiO
2comprehensive content sum is greater than the Impervious Materials of 85wt%; When electrolyzer brickwork, by the also jolt ramming above lagging material of the Impervious Materials uniform spreading after drying treatment, then on its top layer, evenly sprinkle one deck admixture, then repave the materials such as liner and complete brickwork.
Described refractory particle is selected from one or the arbitrary combination in flint clay grog, bauxitic clay grog, fused mullite, flint clay grog, and its granularity is 0-8mm.Adopt in 0-1mm, 0.5-1mm, 1-2mm, 1-3mm, 3-5mm, 3-6mm, 6-8mm granularity 3 kinds or 3 kinds to carry out above that grade is joined or natural grading.
Described refractory powder is selected from two kinds or arbitrary combination in flint clay grog, bauxitic clay grog, fused mullite, chamotte, albite in powder, silica powder, and its granularity is less than 0.2mm.Adopt fine powder (granularity 0.1-0.2mm), micro mist (granularity is less than 0.1mm) to carry out that grade is joined or natural grading.
Described additive is by one or both combinations in boron oxide, boric anhydride, borax, and its purity is greater than 95%, and granularity is less than 0.2mm.
Refractory particle, refractory powder, additive are mixed, and natural packing density is 1.55-1.65 g/cm
3, tap density is greater than 1.9g/cm
3.Rear or the obvious moist Impervious Materials of long-term placement, needs to be less than the drying treatment of 200 ℃ before use.
Described admixture is selected from one or more combinations in boron oxide, boric anhydride, borax, calcined soda for industry, Sodium Fluoride, lime powder, calcium carbonate powders, magnesia, silicon powder, silica powder, and its mean thickness being sprinkling upon above Impervious Materials is greater than 0.5mm.
Described admixture is commercial alumina, and its mean thickness being sprinkling upon above Impervious Materials is greater than 5mm.
One or more combination mixtures that described admixture is selected from boron oxide, boric anhydride, borax, calcined soda for industry, Sodium Fluoride, lime powder, calcium carbonate powders, magnesia, silicon powder, silica powder below by commercial alumina more than 80wt% and 20wt% form, and its mean thickness being sprinkling upon above Impervious Materials is greater than 1mm.
Below in conjunction with embodiment, the invention will be further described, not the restriction to its protection domain.
Embodiment 1
Do refractory particle with flint clay grog, fused mullite, granularity is divided into 0-1mm, 1-3mm, tri-kinds of gratings of 3-6mm, and overall proportion is 60wt%; Do refractory powder with flint clay grog, bauxitic clay grog, albite in powder, silica powder, maximum particle size is less than 0.2mm, and overall proportion is 33wt%; Borax purity is 95%, and maximum particle size is less than 0.2mm, and overall proportion is 7%.Its even mixture is made to Impervious Materials.
Al in Impervious Materials
2o
3with SiO
2the ratio of overall quality content is 0.92, Al
2o
3with SiO
2overall quality content sum is greater than 90wt%, and natural packing density is 1.64 g/cm
3, tap density 2.01g/cm
3.
In the corundum crucible that is 60mm at a diameter, lay and jolt ramming with Impervious Materials bottom, thickness 6cm.Evenly sprinkle admixture (soda ash) above, mean thickness 0.5mm(utilizes the cumulative volume of add admixture to obtain divided by crucible cross-sectional area).Cover again above density lower, have micropore (electrolyte melt can be permeated smoothly), and size can be put into the alumina ceramic plate of corundum crucible, thickness 2mm just.On alumina ceramic plate, put into the low-temperature electrolytes that 200g contains KF, electrolyte primary crystal temperature is less than 780 ℃.Use again corundum cap covers corundum crucible, and crucible is put into the process furnace of 800-850 ℃, insulation 8h.After having tested, corundum crucible is longitudinally cut, observe and measure ionogen residue situation and infiltrate the thickness in Impervious Materials.
The present embodiment end-result is: alumina ceramic plate top also has more ionogen; In Impervious Materials, ionogen infiltrates total depth 26mm.Illustrate that Impervious Materials has played good barrier effect.
Embodiment 2
Do refractory particle with bauxitic clay grog, flint clay grog, granularity is divided into 0-1mm, 1-3mm, 3-6mm, tetra-kinds of gratings of 6-8mm, and overall proportion is 65wt%; Do refractory powder with flint clay grog, albite in powder, silica powder, and to adopt granularity be 0.1-0.2mm and be less than two kinds of gratings of 0.1mm, overall proportion is 34wt%; Boron oxide purity is 98%, and maximum particle size is less than 0.1mm, and overall proportion is 1%.Its even mixture is made to Impervious Materials.
Al in Impervious Materials
2o
3with SiO
2the ratio of overall quality content is 0.85, Al
2o
3with SiO
2overall quality content sum is greater than 85.5wt%, and natural packing density is 1.55g/cm
3, tap density 1.92g/cm
3.
In the corundum crucible that is 60mm at a diameter, lay and jolt ramming with Impervious Materials bottom, thickness 6cm.Evenly sprinkle admixture (boron oxide and soda ash mixture, respectively account for 50wt%) above, mean thickness 0.5mm(utilizes the cumulative volume of add admixture to obtain divided by crucible cross-sectional area).Cover again above density lower, have micropore (electrolyte melt can be permeated smoothly), and size can be put into the alumina ceramic plate of corundum crucible, thickness 2mm just.On ceramic plate, put into the low-temperature electrolytes that 200g contains KF, electrolyte primary crystal temperature is less than 780 ℃.Use again corundum cap covers corundum crucible, and crucible is put into the process furnace of 800-850 ℃, insulation 8h.After having tested, corundum crucible is longitudinally cut, observe and measure ionogen residue situation and infiltrate the thickness in Impervious Materials.
The present embodiment end-result is: alumina ceramic plate top also has more ionogen; In Impervious Materials, ionogen infiltrates total depth 24mm.Illustrate that Impervious Materials has played good barrier effect.
Embodiment 3
Do refractory particle with flint clay grog, bauxitic clay grog, granularity is divided into 0-1mm, 1-3mm, 3-6mm, tetra-kinds of gratings of 6-8mm, and overall proportion is 55wt%; Do refractory powder with flint clay grog, bauxitic clay grog, albite in powder, silica powder, maximum particle size is less than 0.2mm, and overall proportion is 40wt%; Boric anhydride purity is 98%, and maximum particle size is less than 0.2mm, and overall proportion is 5%.Its even mixture is made to Impervious Materials.
Al in Impervious Materials
2o
3with SiO
2the ratio of overall quality content is 1.1, Al
2o
3with SiO
2overall quality content sum is greater than 90wt%, and natural packing density is 1.61 g/cm
3, tap density 1.98g/cm
3.
In the corundum crucible that is 60mm at a diameter, lay and jolt ramming with Impervious Materials bottom, thickness 6cm.Evenly sprinkle admixture (boron oxide, calcium carbonate powders, silicon powder) above, mean thickness 0.5mm(utilizes the cumulative volume of add admixture to obtain divided by crucible cross-sectional area).Cover again above density lower, have micropore (electrolyte melt can be permeated smoothly), and size can be put into the alumina ceramic plate of corundum crucible, thickness 2mm just.On alumina ceramic plate, put into the low-temperature electrolytes that 200g contains KF, electrolyte primary crystal temperature is less than 780 ℃.Use again corundum cap covers corundum crucible, and crucible is put into the process furnace of 800-850 ℃, insulation 8h.After having tested, corundum crucible is longitudinally cut, observe and measure ionogen residue situation and infiltrate the thickness in Impervious Materials.
The present embodiment end-result is: alumina ceramic plate top also has more ionogen; In Impervious Materials, ionogen infiltrates total depth 25mm.Illustrate that Impervious Materials has played good barrier effect.
Embodiment 4
Do refractory particle with flint clay grog, bauxitic clay grog, granularity is divided into 0-1mm, 0.5-1mm, 1-3mm, tetra-kinds of gratings of 3-6mm, and overall proportion is 60wt%; Do refractory powder with fused mullite, chamotte, albite in powder, silica powder, and to adopt granularity be 0.1-0.2mm and be less than two kinds of gratings of 0.1mm, overall proportion is 39wt%; Boron oxide purity is 98%, and maximum particle size is less than 0.2mm, and overall proportion is 1%.Its even mixture is made to Impervious Materials.
Al in Impervious Materials
2o
3with SiO
2the ratio of overall quality content is 0.9, Al
2o
3with SiO
2overall quality content sum is greater than 90wt%, and natural packing density is 1.62 g/cm
3, tap density 2.01g/cm
3.
In the corundum crucible that is 60mm at a diameter, lay and jolt ramming with Impervious Materials bottom, thickness 6cm.Evenly sprinkle admixture (Sodium Fluoride, calcium oxide, silica powder, boron oxide mixture) above, mean thickness 0.5mm(utilizes the cumulative volume of add admixture to obtain divided by crucible cross-sectional area).Cover again above density lower, have micropore (electrolyte melt can be permeated smoothly), and size can be put into the alumina ceramic plate of corundum crucible, thickness 2mm just.On alumina ceramic plate, put into the low-temperature electrolytes that 200g contains KF, electrolyte primary crystal temperature is less than 780 ℃.Use again corundum cap covers corundum crucible, and crucible is put into the process furnace of 800-850 ℃, insulation 8h.After having tested, corundum crucible is longitudinally cut, observe and measure ionogen residue situation and infiltrate the thickness in Impervious Materials.
The present embodiment end-result is: alumina ceramic plate top also has more ionogen; In Impervious Materials, ionogen infiltrates total depth 28mm.Illustrate that Impervious Materials has played good barrier effect.
Embodiment 5
Do refractory particle with flint clay grog, bauxitic clay grog, granularity is divided into 0-1mm, 1-3mm, tri-kinds of gratings of 3-6mm, and overall proportion is 60wt%; Do refractory powder with fused mullite, chamotte, albite in powder, silica powder, and to adopt granularity be 0.1-0.2mm and be less than two kinds of gratings of 0.1mm, overall proportion is 38wt%; Boron oxide purity is 98%, and maximum particle size is less than 0.1mm, and overall proportion is 2%.Its even mixture is made to Impervious Materials.
Al in Impervious Materials
2o
3with SiO
2the ratio of overall quality content is 0.9, Al
2o
3with SiO
2overall quality content sum is greater than 90wt%, and natural packing density is 1.61 g/cm
3, tap density 2.01g/cm
3.
In the corundum crucible that is 60mm at a diameter, lay and jolt ramming with Impervious Materials bottom, thickness 6cm.Evenly sprinkle admixture (commercial alumina) above, mean thickness 5mm(utilizes the cumulative volume of add admixture to obtain divided by crucible cross-sectional area).Cover again above density lower, have micropore (electrolyte melt can be permeated smoothly), and size can be put into the alumina ceramic plate of corundum crucible, thickness 2mm just.On alumina ceramic plate, put into the low-temperature electrolytes that 200g contains KF, electrolyte primary crystal temperature is less than 780 ℃.Use again corundum cap covers corundum crucible, and crucible is put into the process furnace of 800-850 ℃, insulation 8h.After having tested, corundum crucible is longitudinally cut, observe and measure ionogen residue situation and infiltrate the thickness in Impervious Materials.
The present embodiment end-result is: alumina ceramic plate top also has more ionogen; In Impervious Materials, ionogen infiltrates total depth 27mm.Illustrate that Impervious Materials has played good barrier effect.
Embodiment 6
Do refractory particle with flint clay grog, bauxitic clay grog, granularity is divided into 0-1mm, 1-3mm, 3-6mm, tetra-kinds of gratings of 6-8mm, and overall proportion is 60wt%; Do refractory powder with fused mullite, chamotte, albite in powder, silica powder, and to adopt granularity be 0.1-0.2mm and be less than two kinds of gratings of 0.1mm, overall proportion is 38wt%; Boron oxide purity is 98%, and maximum particle size is less than 0.2mm, and overall proportion is 2%.Its even mixture is made to Impervious Materials.
Al in Impervious Materials
2o
3with SiO
2the ratio of overall quality content is 0.9, Al
2o
3with SiO
2overall quality content sum is greater than 90wt%, and natural packing density is 1.61 g/cm
3, tap density 2.01g/cm
3.
In the corundum crucible that is 60mm at a diameter, lay and jolt ramming with Impervious Materials bottom, thickness 6cm.Evenly sprinkle admixture (using 80wt% commercial alumina and 5wt% boron oxide, 10wt% soda ash, 5wt% magnesia mixture) above, mean thickness 1mm(utilizes the cumulative volume of add admixture to obtain divided by crucible cross-sectional area).Cover again above density lower, have micropore (electrolyte melt can be permeated smoothly), and size can be put into the alumina ceramic plate of corundum crucible, thickness 2mm just.On alumina ceramic plate, put into the pure potassium cryolite of 200g (KAlF4), liquidus temperature is less than 680 ℃.Use again corundum cap covers corundum crucible, and crucible is put into the process furnace of 750-800 ℃, insulation 8h.After having tested, corundum crucible is longitudinally cut, observe and measure ionogen residue situation and infiltrate the thickness in Impervious Materials.
The present embodiment end-result is: alumina ceramic plate top also has more ionogen; In Impervious Materials, ionogen infiltrates total depth 29mm.Not infiltration completely of ionogen is described, Impervious Materials has played good barrier effect.
Embodiment 7
Adopt the common Impervious Materials that can buy on the market, by analysis Al wherein
2o
3with SiO
2the ratio of overall quality content is 0.849, Al
2o
3with SiO
2overall quality content sum is greater than 84wt%, and natural packing density is 1.51 g/cm
3, tap density 1.86g/cm
3.
In the corundum crucible that is 60mm at a diameter, lay and jolt ramming with Impervious Materials bottom, thickness 6cm.Do not add admixture above.Cover density lower, have micropore (electrolyte melt can be permeated smoothly), and size can be put into the alumina ceramic plate of corundum crucible, thickness 2mm just.On alumina ceramic plate, put into the pure potassium cryolite of 200g (KAlF4), liquidus temperature is less than 680 ℃.Use again corundum cap covers corundum crucible, and crucible is put into the process furnace of 750-800 ℃, insulation 8h.After having tested, corundum crucible is longitudinally cut, observe and measure ionogen residue situation and infiltrate the thickness in Impervious Materials.
The present embodiment end-result is: only there is a small amount of ionogen residue alumina ceramic plate top; In Impervious Materials, ionogen infiltrates total depth and reaches 52mm.Almost infiltration completely of ionogen is described, common Impervious Materials does not play good barrier effect.
Claims (9)
1. an anti-seepage method for aluminium cell, is characterized in that adopting refractory particle 55%-65wt%, refractory powder 30%-40wt%, the even mixture of additive 1%-7% to become Impervious Materials; When electrolyzer brickwork is used, Impervious Materials uniform spreading is also jolt ramming above lagging material, then on its top layer, evenly sprinkles one deck admixture, repaves inner lining material, completes brickwork.
2. the anti-seepage method of a kind of aluminium cell according to claim 1, is characterized in that mixture Impervious Materials process is that refractory particle, refractory powder, additive are mixed, and controls its Al
2o
3with SiO
2the ratio of overall quality content is 0.85-1.1, Al
2o
3with SiO
2overall quality content sum is greater than 85wt%, and natural packing density is 1.55-1.65 g/cm
3, tap density is greater than 1.9g/cm
3.
3. the anti-seepage method of a kind of aluminium cell according to claim 1, is characterized in that described refractory particle is selected from one or the arbitrary combination in flint clay grog, bauxitic clay grog, fused mullite, flint clay grog, and its granularity is 0-8mm; Adopt in 0-1mm, 0.5-1mm, 1-2mm, 1-3mm, 3-5mm, 3-6mm, 6-8mm granularity 3 kinds or 3 kinds to carry out above that grade is joined or natural grading.
4. the anti-seepage method of a kind of aluminium cell according to claim 1, it is characterized in that described refractory powder is selected from two kinds or arbitrary combination in flint clay grog, bauxitic clay grog, fused mullite, chamotte, albite in powder, silica powder, its granularity is less than 0.2mm.
5. the anti-seepage method of a kind of aluminium cell according to claim 1, is characterized in that described additive is by one or both combinations in boron oxide, boric anhydride, borax, and its purity is greater than 95%, and granularity is less than 0.2mm.
6. the anti-seepage method of a kind of aluminium cell according to claim 1, is characterized in that described Impervious Materials prepared long-term placement or obviously moist, needs before use to carry out drying treatment, and drying temperature is less than 200 ℃.
7. the anti-seepage method of a kind of aluminium cell according to claim 1, it is characterized in that described admixture is selected from one or more combinations in boron oxide, boric anhydride, borax, calcined soda for industry, Sodium Fluoride, lime powder, calcium carbonate powders, magnesia, silicon powder, silica powder, and its mean thickness being sprinkling upon above Impervious Materials is greater than 0.5mm.
8. the Impervious Materials method of a kind of aluminium cell according to claim 1, it is characterized in that described admixture is commercial alumina, and its mean thickness being sprinkling upon above Impervious Materials is greater than 5mm.
9. the anti-seepage method of a kind of aluminium cell according to claim 1, it is characterized in that one or more combination mixtures that described admixture is selected from boron oxide, boric anhydride, borax, calcined soda for industry, lime powder, calcium carbonate powders, Sodium Fluoride, magnesia, silicon powder, silica powder below by commercial alumina more than 80wt% and 20wt% form, and its mean thickness being sprinkling upon above Impervious Materials is greater than 1mm.
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| CN111072393A (en) * | 2019-11-05 | 2020-04-28 | 内蒙古风光源节能环保科技有限公司 | Environment-friendly dry type impermeable material suitable for aluminum electrolytic cell |
| CN111892413A (en) * | 2020-08-26 | 2020-11-06 | 郑州中科耐火材料有限公司 | Special impermeable brick for aluminum cell lining and preparation method thereof |
| CN114988892A (en) * | 2022-05-21 | 2022-09-02 | 郑州大学 | Method for preparing dry type impermeable material by using overhaul slag clinker |
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| CN104496494A (en) * | 2014-12-03 | 2015-04-08 | 柳州市共和耐火材料有限公司 | Dry-type anti-leakage material manufacturing process |
| CN104478372A (en) * | 2014-12-03 | 2015-04-01 | 柳州市共和耐火材料有限公司 | Dry-type anti-leakage material |
| CN107709624B (en) * | 2015-09-10 | 2020-05-05 | 俄铝工程技术中心有限责任公司 | Lining of a cathode assembly for a reduction cell for aluminium production |
| CN107709624A (en) * | 2015-09-10 | 2018-02-16 | 俄铝工程技术中心有限责任公司 | Liner for the cathode assembly of the reduction cell of aluminium production |
| CN106882970A (en) * | 2017-02-22 | 2017-06-23 | 济源市涟源炉业有限公司 | A kind of electrolytic cell composite anti-penetrating brick |
| CN106882970B (en) * | 2017-02-22 | 2020-07-07 | 济源市涟源炉业有限公司 | Composite anti-seepage brick for electrolytic cell |
| CN108314415A (en) * | 2018-04-11 | 2018-07-24 | 贵州创新轻金属工艺装备工程技术研究中心有限公司 | A kind of aluminum electrolysis industry special-purpose nanometer thermal insulation board and preparation method thereof |
| CN110342945A (en) * | 2019-07-12 | 2019-10-18 | 新疆天山建材集团耐火材料有限责任公司 | A kind of dry type impervious material and preparation method thereof |
| CN110436947A (en) * | 2019-08-23 | 2019-11-12 | 益阳鸿源稀土有限责任公司 | A kind of large size rare earth electrolysis cell anti-seepage material |
| CN110436947B (en) * | 2019-08-23 | 2022-02-18 | 益阳鸿源稀土有限责任公司 | Anti-leakage material for large rare earth electrolytic cell |
| CN111072393A (en) * | 2019-11-05 | 2020-04-28 | 内蒙古风光源节能环保科技有限公司 | Environment-friendly dry type impermeable material suitable for aluminum electrolytic cell |
| CN111072393B (en) * | 2019-11-05 | 2022-02-15 | 内蒙古风光源节能环保科技有限公司 | Environment-friendly dry type impermeable material suitable for aluminum electrolytic cell |
| CN111892413A (en) * | 2020-08-26 | 2020-11-06 | 郑州中科耐火材料有限公司 | Special impermeable brick for aluminum cell lining and preparation method thereof |
| CN111892413B (en) * | 2020-08-26 | 2023-02-14 | 郑州中科耐火材料有限公司 | Special impermeable brick for aluminum electrolytic cell lining and preparation method thereof |
| CN114988892A (en) * | 2022-05-21 | 2022-09-02 | 郑州大学 | Method for preparing dry type impermeable material by using overhaul slag clinker |
| CN114988892B (en) * | 2022-05-21 | 2023-04-11 | 郑州大学 | Method for preparing dry type impermeable material by using overhaul slag clinker |
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