CN1298891C - Profiled si3 N4 combined SiC brick for aluminium electrolysis bath side wall - Google Patents
Profiled si3 N4 combined SiC brick for aluminium electrolysis bath side wall Download PDFInfo
- Publication number
- CN1298891C CN1298891C CNB2004100307834A CN200410030783A CN1298891C CN 1298891 C CN1298891 C CN 1298891C CN B2004100307834 A CNB2004100307834 A CN B2004100307834A CN 200410030783 A CN200410030783 A CN 200410030783A CN 1298891 C CN1298891 C CN 1298891C
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- CN
- China
- Prior art keywords
- brick
- conjunction
- sic
- side wall
- si3n4
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011449 brick Substances 0.000 title claims abstract description 124
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 30
- 239000004411 aluminium Substances 0.000 title claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 22
- 238000005868 electrolysis reaction Methods 0.000 title 1
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002131 composite material Substances 0.000 claims abstract description 23
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 241000826860 Trapezium Species 0.000 claims description 21
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 230000001788 irregular Effects 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 15
- 239000000615 nonconductor Substances 0.000 abstract description 2
- 230000003628 erosive effect Effects 0.000 abstract 1
- 230000009970 fire resistant effect Effects 0.000 abstract 1
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 37
- 229910010271 silicon carbide Inorganic materials 0.000 description 37
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 3
- -1 compound silicon nitride Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Electrolytic Production Of Metals (AREA)
Abstract
The present invention relates to a heterotypic Si3N4 combined SiC firebrick for the side walls of the aluminium cells of high-temperature furnace bodies, which belongs to the technical field of fire-resistant material preparation. The present invention is characterized in that a right-angle trapezoidal bulge is arranged on a large nonworking surface of a Si3N4 combined SiC brick body for the side walls of aluminium cells, the right-angle trapezoidal bulge is aligned to one end surface of the brick body in the height direction, the width of the right-angle trapezoidal bulge is consistent with the width of the Si3N4 combined SiC brick body, and a Si3N4 combined SiC brick integral with a right-angle trapezoidal bulge is formed. Because the top right-angle trapezoidal bulge of the Si3N4 combined SiC brick body provided by the present invention can isolate the carbon firebrick top from high temperature air, the carbon firebrick can be prevented from being oxidized and damaged, and the service life of the composite brick body is prolonged. The Si3N4 combined SiC brick body is an electrical insulator, which can prevent carbon firebrick side walls from electrical leakage, and electric energy is saved. The composite structure utilizes the advantage that the Si3N4 combined SiC brick can be effectively prevented from high-temperature fused mass infiltration and erosion, and the characteristics of high heat conduction and low cost, which exist in the carbon firebrick.
Description
Technical field:
The present invention relates to the special-shaped Si of a kind of high-temperature furnace body aluminum electrolytic bath side wall
3N
4In conjunction with SiC brick refractory brick, belong to the refractory material preparing technical field.
Background technology
The refractory materials that aluminum electrolytic bath side wall uses at present is carbon refractory brick, silicon nitride combined silicon carbide refractory brick, silicon nitride combined silicon carbide refractory brick and carbon refractory brick compound composite brick structure.Carbon refractory brick is easy to be caused aluminum electrolytic bath side wall life-span weak point and cause the big problem of electric energy loss owing to leak electricity by the high temperature oxidation damage; Silicon nitride combined silicon carbide refractory brick resistance of oxidation is better than carbon refractory brick, anti-sodium aluminum fluoride ionogen liquation erosional competency is better, electrical insulation capability is better, electric energy loss is less, the advantage of long working life, but there is the big price problem of higher of manufacturing cost in it.
In recent years, taked silicon nitride combined silicon carbide refractory brick and carbon refractory brick plane to paste compound composite brick structure.This plane stickup compound silicon nitride combined silicon carbide refractory brick and carbon refractory brick composite brick structure can reduce the cost of aluminum electrolyzing cell used refractory brick.But still there is carbon refractory brick to be exposed in the high temperature air at the top of this composite brick structure, the oxidized easily phenomenon that causes the unusual damage of this composite brick structural top of carbon refractory brick, make this composite brick structure not reach the result of use of expection, bring the direct work-ing life that influences silicon nitride combined silicon carbide refractory brick on the contrary, cause the waste of silicon nitride combined silicon carbide refractory brick.
Summary of the invention
Purpose of the present invention is exactly for having the compound silicon nitride combined silicon carbide refractory brick of this plane stickup and the carbon refractory brick composite brick problem in the carbon refractory brick abnormal oxidation damage of brick laying structure top existence now, propose a kind of can be effectively that top and the high temperature air of carbon refractory brick is isolatedly, avoid the special-shaped Si of aluminum electrolytic bath side wall of carbon refractory brick oxidation
3N
4In conjunction with the SiC brick,
The special-shaped Si of a kind of aluminum electrolytic bath side wall that the present invention proposes
3N
4In conjunction with the SiC brick, it is characterized in that: described at aluminum electrolytic bath side wall Si
3N
4In conjunction with offering a right-angled trapezium projection on the bigger non-working surface of an area of SiC brick body, described right-angled trapezium projection is concordant with an end face of brick height direction, width and Si
3N
4Width in conjunction with the SiC brick is consistent, consists of the Si of an integral body band right-angled trapezium projection
3N
4In conjunction with the SiC brick.The right-angled trapezium bossing of this composite brick body is positioned at the top up in use.
At the special-shaped Si of above-mentioned aluminum electrolytic bath side wall
3N
4In the SiC brick, described bossing is right-angled trapezium or the rectangle of rule, the irregular polygon of also can be that bossing is concordant with an end face of brick height direction, width and brick body width are consistent.
At the special-shaped Si of above-mentioned aluminum electrolytic bath side wall
3N
4In the SiC brick, described Si
3N
4When being used for the side wall of aluminium cell, its right-angled trapezium bossing bonds by refractory mortar with the carbon refractory brick of corresponding shape, consists of closely combination, forms a Si in conjunction with the SiC brick
3N
4Be combined with each other with carbon refractory brick and appearance and size matches and consistent composite brick body in conjunction with the SiC brick.
At the special-shaped Si of above-mentioned aluminum electrolytic bath side wall
3N
4In the SiC brick, described right-angled trapezium bossing also can bond by refractory mortar with the refractory brick of the corresponding shape of other material and form closely combination, consists of a Si
3N
4Be combined with each other with this material refractory brick and appearance and size matches and consistent composite brick integral body in conjunction with the SiC brick.
Because Si provided by the invention
3N
4Top right-angled trapezium bossing in conjunction with SiC brick body can be isolated with carbon refractory brick top and high temperature air, can avoid the oxidation damage of carbon refractory brick, prolongs aluminum electrolytic bath side wall Si
3N
4In conjunction with the life-span of SiC brick and carbon refractory brick composite brick body.Simultaneously, Si
3N
4Be electrical insulator in conjunction with SiC brick body, can prevent the electric leakage of carbon refractory brick side wall, saves energy.This composite construction had both utilized Si
3N
4Effectively prevent the advantage being permeated and corrode by hot melt body in conjunction with the SiC brick, utilized again the characteristics of the high heat conduction lower cost of carbon refractory brick.Use this right-angled trapezium Si
3N
4Be combined with each other in conjunction with SiC brick and carbon refractory brick and form the composite brick body that appearance and size matches consistent, the side wall that both can guarantee aluminium cell is used refractory brick service life, can greatly reduce again aluminum electrolytic bath side wall with the cost of refractory brick and the production cost of aluminium electroloysis.
Description of drawings
The special-shaped Si of Fig. 1 aluminum electrolytic bath side wall of the present invention
3N
4In conjunction with the structure chart of SiC brick, L-length, B-width.
Fig. 2 Si of the present invention
3N
4In conjunction with the partial cutaway schematic after SiC brick body and the carbon brick combination.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Ask for an interview Fig. 1, the present invention is the side wall Si at aluminium cell
3N
4Offer a right-angled trapezium projection on the non-working surface in conjunction with SiC brick body, this right-angled trapezium projection is concordant with an end face of brick height direction, width and Si
3N
4Width in conjunction with the SiC brick is consistent, consists of an integral body band right-angled trapezium Si
3N
4In conjunction with the SiC brick.Bossing also can be the right-angle triangle or the rectangle of rule, also can be an irregular polygon that end face is concordant protruding and brick height degree direction.This Si
3N
4, when being used for the side wall of aluminium cell, can bond by refractory mortar with the carbon refractory brick of corresponding shape in conjunction with the SiC brick, consist of closely combination, form a Si
3N
4Be combined with each other with carbon refractory brick and appearance and size matches and consistent composite brick body in conjunction with the SiC brick, composite brick body partial cutaway schematic is seen accompanying drawing 2,1-refractory mortar bond line, 2-Si
3N
4In conjunction with SiC brick body, 3-carbon brick body.This Si
3N
4Composite brick body after compound in conjunction with SiC brick and carbon refractory brick can be used for building by laying bricks or stones of aluminum electrolytic bath side wall.The characteristics of high-performance and low-cost will be embodied.The right-angled trapezium bossing of this composite brick body is positioned at the top up in use.
Certainly, this special-shaped Si
3N
4In conjunction with the SiC brick, its right-angled trapezium bossing also can with other carbon containing or not the refractory brick of the corresponding shape of carbon containing material bond by refractory mortar, consist of closely combination, form a Si
3N
4Be combined with each other with this material refractory brick and appearance and size matches and consistent composite brick integral body in conjunction with the SiC brick, the side wall that is used for aluminium cell is built by laying bricks or stones.
Claims (4)
1, the special-shaped Si of a kind of aluminum electrolytic bath side wall
3N
4In conjunction with the SiC brick, it is characterized in that: described at aluminum electrolytic bath side wall Si
3N
4In conjunction with offering a right-angled trapezium projection on the bigger non-working surface of an area of SiC brick body, described right-angled trapezium projection is concordant with an end face of brick height direction, width and Si
3N
4Width in conjunction with the SiC brick is consistent, consists of a whole right-angled trapezium Si
3N
4In conjunction with the SiC brick.
2, the special-shaped Si of aluminum electrolytic bath side wall according to claim 1
3N
4In conjunction with the SiC brick, it is characterized in that: described bossing is the right-angled trapezium of rule, perhaps is right angled triangle, rectangle, the irregular polygon of also can be that bossing is concordant with an end face of brick height direction, width and brick body width are consistent.
3, the special-shaped Si of aluminum electrolytic bath side wall according to claim 1
3N
4In conjunction with the SiC brick, it is characterized in that: described Si
3N
4When being used for the side wall of aluminium cell, its right-angled trapezium bossing bonds by refractory mortar with the carbon refractory brick of corresponding shape, consists of closely combination, forms a Si in conjunction with the SiC brick
3N
4Be combined with each other with carbon refractory brick and appearance and size matches and consistent composite brick body in conjunction with the SiC brick.The right-angled trapezium bossing of this composite brick body is positioned at the top up in use.
4, the special-shaped Si of aluminum electrolytic bath side wall according to claim 1
3N
4In conjunction with the SiC brick, it is characterized in that: described right-angled trapezium bossing can bond by refractory mortar with the refractory brick of the corresponding shape of other material and form closely combination, consists of a Si
3N
4Be combined with each other with this material refractory brick and appearance and size matches and consistent composite brick integral body in conjunction with the SiC brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100307834A CN1298891C (en) | 2004-04-09 | 2004-04-09 | Profiled si3 N4 combined SiC brick for aluminium electrolysis bath side wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100307834A CN1298891C (en) | 2004-04-09 | 2004-04-09 | Profiled si3 N4 combined SiC brick for aluminium electrolysis bath side wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1590589A CN1590589A (en) | 2005-03-09 |
| CN1298891C true CN1298891C (en) | 2007-02-07 |
Family
ID=34601470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100307834A Expired - Fee Related CN1298891C (en) | 2004-04-09 | 2004-04-09 | Profiled si3 N4 combined SiC brick for aluminium electrolysis bath side wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1298891C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348921B (en) * | 2007-07-16 | 2012-05-23 | 沈阳铝镁设计研究院有限公司 | Composite construction and composite method of aluminum cell side masonry block and special masonry block |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062336U (en) * | 1989-10-13 | 1990-09-19 | 山东铝厂 | Aluminium electrolyser with combined sin and sic material as isde lining brick |
| US5560809A (en) * | 1995-05-26 | 1996-10-01 | Saint-Gobain/Norton Industrial Ceramics Corporation | Improved lining for aluminum production furnace |
| CN2296346Y (en) * | 1997-03-21 | 1998-11-04 | 河北碳素厂 | Lateral irregular carbon block for aluminium electrolytic bath |
| EP1141446A1 (en) * | 1998-11-17 | 2001-10-10 | Alcan International Limited | Wettable and erosion/oxidation-resistant carbon-composite materials |
| CN1460734A (en) * | 2003-05-30 | 2003-12-10 | 中国铝业股份有限公司 | Cell side lining composite side block of aluminium cell |
-
2004
- 2004-04-09 CN CNB2004100307834A patent/CN1298891C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062336U (en) * | 1989-10-13 | 1990-09-19 | 山东铝厂 | Aluminium electrolyser with combined sin and sic material as isde lining brick |
| US5560809A (en) * | 1995-05-26 | 1996-10-01 | Saint-Gobain/Norton Industrial Ceramics Corporation | Improved lining for aluminum production furnace |
| CN2296346Y (en) * | 1997-03-21 | 1998-11-04 | 河北碳素厂 | Lateral irregular carbon block for aluminium electrolytic bath |
| EP1141446A1 (en) * | 1998-11-17 | 2001-10-10 | Alcan International Limited | Wettable and erosion/oxidation-resistant carbon-composite materials |
| CN1460734A (en) * | 2003-05-30 | 2003-12-10 | 中国铝业股份有限公司 | Cell side lining composite side block of aluminium cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1590589A (en) | 2005-03-09 |
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| C14 | Grant of patent or utility model | ||
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