CN204202396U - A kind of magnesia carbon brick with micro-pore - Google Patents
A kind of magnesia carbon brick with micro-pore Download PDFInfo
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- CN204202396U CN204202396U CN201420670490.1U CN201420670490U CN204202396U CN 204202396 U CN204202396 U CN 204202396U CN 201420670490 U CN201420670490 U CN 201420670490U CN 204202396 U CN204202396 U CN 204202396U
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- steel plate
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- brick
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Abstract
The utility model discloses a kind of magnesia carbon brick with micro-pore, and in brick body and surface has micro-pore of several submicron order, and micro-pore distributes with surface uniform in brick body; Brick body is frustum, and the end surfaces I near brick body stub end is provided with steel plate I, and the one end near end surfaces I on side surface is provided with steel plate II, and steel plate I and steel plate II are combined into steel plate integument; With paraffin layer I on the end surfaces II of the little head end of brick body, side surface has paraffin layer II near one end of end surfaces II, paraffin layer I and paraffin layer II are combined into parafin bath integument, parafin bath integument contacts with steel plate integument and connects, and paraffin layer II outer surface on surface, brick body the same side and steel plate II outer surface are in same plane.Effectively can improve the ability that magnesia carbon brick in use resists thermal stress damage, significantly improve and press close to furnace shell end brick body to the anti-oxidant or anti-hydration capability of air, steam and the anti-scour property near the inner brick body of stove.
Description
Technical field
The utility model relates to a kind of field of steel-making magnesia carbon brick, is specifically related to a kind of magnesia carbon brick with micro-pore.
Background technology
Magnesia carbon brick is widely used in because it has good resistance to slag corrosion on the steel-making inner lining of kiln such as electric furnace, converter, ladle.As the refractory material that steelmaking system is ideal, magnesia carbon brick is for primary raw material with fused magnesite and flaky graphite, be bonding agent with phenolic resins and add suitable additives, producing through the operation such as broken, batching, mixing, shaping, heat treatment, finished product packing.Found by application practice, thermal stress damage and oxidation and decarbonization are the main causes of magnesia carbon brick damage.The factors such as the thermal coefficient of expansion of thermal stress damage mainly because the periclase coefficient of expansion in magnesia carbon brick is large, between mineral facies is inconsistent, thermograde cause.And thermal stress damage first forms micro-crack often, there are some if outside and be conducive to the factor again forming thermal stress, micro-crack just can further expand, and magnesia carbon brick is finally damaged.Suffer the magnesia carbon brick of thermal stress damage in use generally can show " traverse furrow perps ", " steamed bun shape is serious ", " service life is short " etc. " symptom ".Above-mentioned all " symptom " not only threatens the safe natural labor of steel mill, brings immeasurable economic loss also to Nai Cai producer.
Summary of the invention
The utility model is for prior art Problems existing, a kind of magnesia carbon brick with micro-pore is provided, in brick body and surface has micro-pore, the stub end of brick body adopts steel plate parcel, the little head end of brick body adopts parafilm wrap structure, can effectively improve this magnesia carbon brick in use resist thermal stress damage ability, also significantly can improve and press close to furnace shell end brick body to the anti-oxidant or anti-hydration capability of air, steam and the anti-scour property near the inner brick body of stove.
For realizing above-mentioned purpose of the present utility model, the utility model adopts following technical scheme:
Have a magnesia carbon brick for micro-pore, comprise brick body, in brick body and surface has micro-pore of several submicron order, and micro-pore distributes with surface uniform in brick body; Described brick body is quadrangular frustum pyramid shaped, cuboid or shaped body, there are side surface and two end surfaces, end surfaces I near brick body stub end is provided with steel plate I, and the one end near end surfaces I on side surface is provided with steel plate II, and steel plate I and steel plate II Connecting groups synthesize steel plate integument; With paraffin layer I on the end surfaces II of the little head end of brick body, side surface has paraffin layer II near one end of end surfaces II, paraffin layer I and paraffin layer II Connecting groups synthesize parafin bath integument, parafin bath integument contacts with steel plate integument and connects, and paraffin layer II outer surface on surface, brick body the same side and steel plate II outer surface are in same plane.
Described a kind of magnesia carbon brick with micro-pore, the cumulative volume of described micro-pore accounts for the 5-8% of brick body volume.
Described a kind of magnesia carbon brick with micro-pore, described micro-pore comprises the closed pore being positioned at brick body inside and the apparent pore being positioned at brick surface, and the cumulative volume of described apparent pore accounts for the 2-5% of brick body volume.
Described a kind of magnesia carbon brick with micro-pore, the aperture of described micro-pore is 0.5 ~ 5 μm.
Described a kind of magnesia carbon brick with micro-pore, described steel plate integument is gluing bonding with brick body.
Described a kind of magnesia carbon brick with micro-pore, described steel plate integument is one-time formed integrative-structure, has steel plate I and steel plate II.
Described a kind of magnesia carbon brick with micro-pore, described steel plate integument is fabricated structure, and steel plate I is connected by welding manner with steel plate II, or after being connected by welding manner between steel plate II with steel plate II, then be connected with steel plate I welding manner.
Described a kind of magnesia carbon brick with micro-pore, the thickness of described steel plate I and steel plate II is 1.2 ~ 1.6mm.
Described a kind of magnesia carbon brick with micro-pore, the thickness of described paraffin layer I and II is 0.2mm.
Described a kind of magnesia carbon brick with micro-pore, described brick body is rectangular pyramid mesa-shaped, cuboid or shaped body.
The utility model has following beneficial effect:
1, magnesia carbon brick brick body has uniform micro-pore tissue, effectively can cushion the thermal stress that in use brick body produces, thoroughly solve the problem that " traverse furrow perps ", " steamed bun shape is serious ", " service life is short " etc. are serious.
2, by arranging steel plate integument, can effectively prevent the stub end of magnesia carbon brick brick body from suffering air oxidation and steam aquation.
3, by arranging parafin bath layer, make, in parafin bath to micro-pore, effectively to plug pore, the intrusion of use initial stage slag can be alleviated.When paraffin evaporates gradually, because air pressure in micro-pore raises, slag just effectively can be stoped to enter in micro-air vent channel, thus significantly improve the anti-scour property of magnesia carbon brick.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation with the magnesia carbon brick of micro-pore of the utility model.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is the B-B profile of Fig. 1.
Wherein 1-brick body, 2-steel plate integument, 21-steel plate I, 22-steel plate II, 3-parafin bath integument, the micro-pore of 31-paraffin layer I, 32-paraffin layer II, 4-.
Detailed description of the invention
Have a magnesia carbon brick for micro-pore as Figure 1-3, comprise brick body, in brick body and surface has micro-pore 4 of several submicron order, and micro-pore 4 distributes with surface uniform in brick body 1; The aperture of micro-pore 4 is 0.5 ~ 5 μm, and the cumulative volume of micro-pore 4 accounts for the 5-8% of brick body volume.Micro-pore 4 comprises the closed pore being positioned at brick body 1 inside and the apparent pore being positioned at brick body 1 surface, and the cumulative volume of apparent pore accounts for the 2-5% of brick body volume.
The brick body 1 of this magnesia carbon brick is quadrangular frustum pyramid shaped as Figure 1-3, may also be rectangular-shaped or shaped body, and may also be cross section is trapezoidal standard arch brick, also can be shape or the obform body of other designs.Brick body 1 has side surface and two end surfaces, and the end surfaces I near brick body 1 stub end is provided with steel plate I 21, and the one end near end surfaces I on side surface is provided with steel plate II 22, and steel plate I 21 and steel plate II 22 Connecting groups synthesize steel plate integument 2; With paraffin layer I 31 on the end surfaces II of the little head end of brick body, side surface has paraffin layer II 32 near one end of end surfaces II, paraffin layer I 31 and paraffin layer II 32 Connecting groups synthesize parafin bath integument 3, parafin bath integument 3 contacts with steel plate integument 2 and connects, and paraffin layer II 32 outer surface on surface, brick body 1 the same side and steel plate II 22 outer surface are in same plane.Preferably, steel plate integument 2 and brick body 1 adopt 2-in-1 1 seccotine bonding, and adhesive bond place bubble-free is firmly bonding.This steel plate integument 2 can be one-time formed integrative-structure, has steel plate I 21 and steel plate II 22.May also be fabricated structure, its light plate II 22 is structure as a whole, steel plate I 21 is connected by welding manner with steel plate II 22, or surrounded by several steel plate II 22, after being connected by welding manner between steel plate II 22 with steel plate II 22, then be connected with steel plate I 21 welding manner, between each steel plate, gap adopts argon arc welding welding, and with angle grinding machine by weld seam protrusion place grinding process, and must ensure that each commissure sealing is excellent.The thickness of steel plate is 1.2 ~ 1.6mm.The thickness of paraffin layer I 31 and II 32 is 0.2mm.Parafin bath integument 3 floods paraffin layer I 31 and II 32 and forms when brick body 1 after heat treatment becomes finished bricks, dipping before by heating paraffin to 60 degree, make it melt completely and there is suitable viscosity number.So not only make the even paraffin layer I 31 and II 32 that brick body 1 surface attachment one deck 0.2mm is thick, also make the apparent pore in micro-pore 4 be filled with paraffin.
Facts have proved, a kind of for the utility model magnesia carbon brick with micro-pore is applied on the electric furnace liner of certain steel mill.Use rear effect very remarkable, significantly improve the thermal shock resistance of magnesia carbon brick, resistance to slag, solve the problem in the serious threat life-span in furnace life such as " stub end efflorescence ", " steamed bun shape ", " traverse furrow perps " of the resistance to material of electric furnace hot zone, make this electric furnace life-span bring up to the level of more than 400 stoves by 200 original stoves.
Claims (10)
1. have a magnesia carbon brick for micro-pore, it is characterized in that, comprise brick body, in brick body and surface has micro-pore of several submicron order, and micro-pore distributes with surface uniform in brick body; Described brick body is frustum, has side surface and two end surfaces, and the end surfaces I near brick body stub end is provided with steel plate I, and the one end near end surfaces I on side surface is provided with steel plate II, and steel plate I and steel plate II Connecting groups synthesize steel plate integument; With paraffin layer I on the end surfaces II of the little head end of brick body, side surface has paraffin layer II near one end of end surfaces II, paraffin layer I and paraffin layer II Connecting groups synthesize parafin bath integument, parafin bath integument contacts with steel plate integument and connects, and paraffin layer II outer surface on surface, brick body the same side and steel plate II outer surface are in same plane.
2. a kind of magnesia carbon brick with micro-pore according to claim 1, is characterized in that, the cumulative volume of described micro-pore accounts for the 5-8% of brick body volume.
3. a kind of magnesia carbon brick with micro-pore according to claim 2, is characterized in that, described micro-pore comprises the closed pore being positioned at brick body inside and the apparent pore being positioned at brick surface, and the cumulative volume of described apparent pore accounts for the 2-5% of brick body volume.
4., according to the arbitrary described a kind of magnesia carbon brick with micro-pore of claim 1-3, it is characterized in that, the aperture of described micro-pore is 0.5-5 μm.
5. a kind of magnesia carbon brick with micro-pore according to claim 1, is characterized in that, described steel plate integument is gluing bonding with brick body.
6. a kind of magnesia carbon brick with micro-pore according to claim 5, is characterized in that, described steel plate integument is one-time formed integrative-structure, has steel plate I and steel plate II.
7. a kind of magnesia carbon brick with micro-pore according to claim 5, it is characterized in that, described steel plate integument is fabricated structure, and steel plate I is connected by welding manner with steel plate II, or after being connected by welding manner between steel plate II with steel plate II, then be connected with steel plate I welding manner.
8. a kind of magnesia carbon brick with micro-pore according to claim 1, is characterized in that, the thickness of described steel plate I and steel plate II is 1.2 ~ 1.6mm.
9. a kind of magnesia carbon brick with micro-pore according to claim 1, is characterized in that, the thickness of described paraffin layer I and II is 0.2mm.
10. a kind of magnesia carbon brick with micro-pore according to claim 1, is characterized in that, described brick body is rectangular pyramid mesa-shaped, cuboid or shaped body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670490.1U CN204202396U (en) | 2014-11-10 | 2014-11-10 | A kind of magnesia carbon brick with micro-pore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670490.1U CN204202396U (en) | 2014-11-10 | 2014-11-10 | A kind of magnesia carbon brick with micro-pore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204202396U true CN204202396U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420670490.1U Expired - Fee Related CN204202396U (en) | 2014-11-10 | 2014-11-10 | A kind of magnesia carbon brick with micro-pore |
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| Country | Link |
|---|---|
| CN (1) | CN204202396U (en) |
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2014
- 2014-11-10 CN CN201420670490.1U patent/CN204202396U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20151110 |
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| EXPY | Termination of patent right or utility model |