CN102506578B - Forming method of full-fiber monolithic furnace lining - Google Patents
Forming method of full-fiber monolithic furnace lining Download PDFInfo
- Publication number
- CN102506578B CN102506578B CN201110437585.XA CN201110437585A CN102506578B CN 102506578 B CN102506578 B CN 102506578B CN 201110437585 A CN201110437585 A CN 201110437585A CN 102506578 B CN102506578 B CN 102506578B
- Authority
- CN
- China
- Prior art keywords
- furnace lining
- fiber
- monolithic
- lining
- forming
- 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.)
- Active
Links
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a furnace lining forming technology of an industrial furnace, and in particular relates to a forming method of a full-fiber monolithic furnace lining for an industrial furnace, The monolithic furnace lining takes pulp prepared one or a mixture of ceramic fiber, polycrystalline fiber and mineral fiber as the main raw material, and the raw material is subjected to vacuum filtration and primary integral forming, and the volume density of the obtained furnace lining is 250-400kg/m<3>. During the forming process, the fiber pulp concentration is controlled at 1-15wt%, the vacuum degree of a vacuum pump is controlled at 0.01-0.06MPa, the fiber pulp is dried after forming, and the drying temperature is controlled at 50-200 DEG C. The full-fiber monolithic furnace lining is high in forming efficiency, is accurate in dimension, is light and energy-saving, and can absorb heat stress effectively, and the material is difficult to crack, the heat shock stability is good, and the service life of the furnace lining can be prolonged effectively.
Description
Technical field
The present invention relates to used for industrial furnace furnace lining forming technique, relate in particular to a kind of full fiber monolithic furnace lining forming method.
Background technology
Industrial furnace is the heat that utilizes fuel combustion or electric energy conversion in industrial production, by the Thermal Equipment of material or workpiece heating.Industrial furnace divides flame kiln (or claiming fuel kiln) and electric kiln by heat-supplying mode, is widely used in casting, forging and stamping, metal heat treatmet, baking, welding and the Powder Metallurgy Industry of the industrial circles such as metallurgy, oil, coal gas, silicate.Generally, in the thermal energy consumption of industrial furnace running, the available energy dissipation of heated parts etc. can not be saved.The ineffective energy consumption of the bucket tool of heated parts and heating controlled atmospher etc., under condition reasonable in design and that technique is correct, can not be saved.But in the ineffective energy consumption that can save, the thermal energy consumption of furnace lining is maximum, main and furnace lining material and furnace lining structure are closely related.Therefore,, along with industrial and scientific and technological development, China's industrial furnace lining material and structure are being updated always.From original light fire brick+vermiculite power, to microballon brick+alumina silicate fiber felt+perlite, then to fiber base preform structure and fully fibrous structure, energy-saving effect improves constantly.Wherein, fiber base prefabricated component furnace lining and entire fibre lining are called as the furnace linings for energy-saving, compare with the brick furnace lining of tradition, and this furnace lining is more energy-conservation 10% ~ 20% than new stove, more energy-conservation more than 30% than old stove; Compare with the saving furnace of microballon brick+alumina silicate fiber felt+perlitic structure, still can save energy 5% ~ 15%.But, still have at present many enterprises not yet to adopt the furnace linings for energy-saving, even some industrial furnaces remain light fire brick+vermiculite power structure.So the popularization of Energy Saving for Industrial Furnace furnace lining is shouldered heavy responsibilities.
At present, the moulding of industrial furnace liner mainly contain moulding by casting, build moulding by laying bricks or stones, the several different methods such as ramming process.
Summary of the invention
For making industrial furnace liner more energy-conservation, moulding is more convenient, the object of the invention is to develop a kind of full fiber monolithic furnace lining forming method, the method is made mould according to different furnace lining shapes and is carried out integral one-step molding, shaping efficiency is high, and size is accurate, and resulting furnace lining bulk density is 250 ~ 400kg/m
3, light energy conservation, can effectively absorb thermal stress, and material is not easy to crack, good thermal shock stability.
Object of the present invention adopts following technical scheme to realize:
A kind of full fiber monolithic furnace lining forming method, described full fiber monolithic furnace lining be take one or more in ceramic fibre, polycrystalline fibre and mineral fibres and is mixed latter made slurry as primary raw material, fibre stuff concentration is controlled at 1 ~ 15wt%, adopt vacuum suction filter integral one-step molding, after moulding, be dried, bake out temperature is controlled at 50 ~ 200 ℃, until moisture content is got rid of completely; The bulk density of resulting full fiber monolithic furnace lining is controlled at 250 ~ 400kg/m
3.
A full fiber monolithic furnace lining forming method, in forming process, first drops into fiber in tank diameter, adds running water, is stirred to fiber and disperses completely, and after being uniformly dispersed, fibre stuff can be transported in the forming tank that is placed with monolithic lining mould; Start vavuum pump, by the vacuum degree control of vavuum pump at 0.01 ~ 0.06MPa, the negative pressure of utilizing vavuum pump to produce makes mould be filled closely knit by fibre stuff, after checking that mold filling is closely knit, from forming tank, take out mould and carry out the demoulding, obtain the wet base substrate of monolithic lining, finally furnace lining is wet to base substrate 50 ~ 200 ℃ of oven dry.
In the present invention:
1, full fiber monolithic furnace lining be take one or more in ceramic fibre, polycrystalline fibre and mineral fibres and is mixed latter made slurry as primary raw material, and resulting furnace lining bulk density is 250 ~ 400kg/m
3, thermal conductivity factor is lower than light-weight bricks such as conventional clayey, High-Alumina, mullite and aluminum oxides, and energy-saving effect is remarkable.
2, full fiber monolithic furnace lining, by vacuum suction filter integral one-step molding, can be made the full fiber monolithic furnace lining of various complicated shapes.Resulting monolithic lining light energy conservation, on-the-spot simple assembling can be used, and not affected by site environment factor, and seam is few.
3, fibre stuff concentration is controlled at 1 ~ 15wt%.Slurry concentration is too low, can extend the suction strainer time, and slurry concentration is too high, and fiber dispersion weak effect, easily in the inner cavity that forms of fiber base substrate.
4, the vacuum degree control of vavuum pump is at 0.01 ~ 0.06MPa.Vacuum is too low, and suction is little, and monolithic lining suction strainer efficiency is low, and monolithic lining unit weight is little, the inner cavity blemish that easily forms of fiber base substrate; Vacuum is too high, and suction is large, though monolithic lining suction strainer efficiency is high, easily causes monolithic lining unit weight excessive, and furnace lining thermal conductivity factor increases, and energy-saving effect is poor.
5, bake out temperature is controlled at 50 ℃ ~ 200 ℃, and object is in order to get rid of the moisture content in furnace lining.
Full fiber monolithic furnace lining forming method proposed by the invention, with respect to moulding by casting, the furnace lining of vacuum suction filter global formation does not need site operation, is not subject to the impact of construction environment; With respect to building moulding by laying bricks or stones, the furnace lining of vacuum suction filter global formation belongs to integral one-step molding, easy for installation, substantially without brickwork joint; With respect to ramming process, the Mold Making of vacuum suction filter global formation furnace lining is simple, and shaping efficiency is high.In addition, the furnace lining light energy conservation that vacuum suction filter monolithic lining is produced than above-mentioned three kinds of forming methods, can effectively absorb thermal stress, and material is not easy to crack, good thermal shock stability.
The specific embodiment
embodiment 1:
Full fiber monolithic furnace lining adopts ceramic fibre to do slurry, and fibre stuff concentration is controlled at 1wt%, by vacuum suction filter integral one-step molding; In forming process, first fiber is dropped in tank diameter, add running water, be stirred to fiber and disperse completely, after being uniformly dispersed, fibre stuff is transported in the forming tank that is placed with monolithic lining mould; Start vavuum pump, by the vacuum degree control of vavuum pump at 0.01MPa, utilize the negative pressure of vavuum pump to make mould be filled closely knit by fibre stuff, after checking that mold filling is closely knit, from forming tank, take out mould and carry out the demoulding, obtain the wet base substrate of monolithic lining, send into dry kiln drying, bake out temperature is controlled at 50 ℃, until moisture content is got rid of completely.Resulting furnace lining bulk density is controlled at 250kg/m
3.
embodiment 2:
Adopt polycrystalline fibre to do furnace lining vacuum filtering shape process slurry, fibre stuff concentration is controlled at 1.5wt%, by vacuum suction filter integral one-step molding; In forming process, first fiber is dropped in tank diameter, add running water, be stirred to fiber and disperse completely, after being uniformly dispersed, fibre stuff is transported in the forming tank that is placed with monolithic lining mould; Start vavuum pump, by the vacuum degree control of vavuum pump at 0.06MPa, utilize the negative pressure of vavuum pump to make mould be filled closely knit by fibre stuff, after checking that mold filling is closely knit, from forming tank, take out mould and carry out the demoulding, obtain the wet base substrate of monolithic lining, send into dry kiln drying, bake out temperature is controlled at 150 ℃, until moisture content is got rid of completely.Resulting furnace lining bulk density is controlled at 350kg/m
3.
embodiment 3:
Adopt mineral fibres to do furnace lining vacuum filtering shape process slurry, fibre stuff concentration is controlled at 1.2wt%, by vacuum suction filter integral one-step molding; Forming process is with embodiment 2; After monolithic lining moulding, send into dry kiln drying, bake out temperature is controlled at 200 ℃, until moisture content is got rid of completely.Resulting furnace lining bulk density is controlled at 450kg/m
3.
embodiment 4:
Adopt ceramic fibre, polycrystalline fibre and mineral fibres to do furnace lining vacuum filtering shape process slurry, fibre stuff concentration is controlled at 1wt%, by vacuum suction filter integral one-step molding; Forming process is with embodiment 2; After monolithic lining moulding, send into dry kiln drying, bake out temperature is controlled at 50 ℃, until moisture content is got rid of completely.Resulting furnace lining bulk density is controlled at 300kg/m
3.
Claims (1)
1. a full fiber monolithic furnace lining forming method, described furnace lining adopts vacuum suction filter integral one-step molding; After moulding, be dried, obtain full fiber monolithic furnace lining; It is characterized in that: the primary raw material of described full fiber monolithic furnace lining is: one or more in ceramic fibre, polycrystalline fibre and mineral fibres mix latter made slurry, described fibre stuff concentration is: 1 ~ 15wt%; Described full fiber monolithic furnace lining bulk density is 250 ~ 400kg/m
3; In the process of described vacuum suction filter integral one-step molding, first fiber is dropped in tank diameter, add water, be stirred to fiber and disperse completely, after being uniformly dispersed, fibre stuff can be transported in the forming tank that is placed with monolithic lining mould; Start vavuum pump, by the vacuum degree control of vavuum pump, at 0.01 ~ 0.06MPa, the negative pressure of utilizing vavuum pump to produce makes mould be filled closely knit by fibre stuff; After checking that mold filling is closely knit, from forming tank, take out mould and carry out the demoulding, obtain the wet base substrate of monolithic lining, finally furnace lining is wet to base substrate 50 ~ 200 ℃ of oven dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110437585.XA CN102506578B (en) | 2011-12-23 | 2011-12-23 | Forming method of full-fiber monolithic furnace lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110437585.XA CN102506578B (en) | 2011-12-23 | 2011-12-23 | Forming method of full-fiber monolithic furnace lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102506578A CN102506578A (en) | 2012-06-20 |
| CN102506578B true CN102506578B (en) | 2014-02-26 |
Family
ID=46218689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110437585.XA Active CN102506578B (en) | 2011-12-23 | 2011-12-23 | Forming method of full-fiber monolithic furnace lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102506578B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107244937A (en) * | 2017-07-05 | 2017-10-13 | 天长市兴宇铸造有限公司 | A kind of forming method of precision castings smelting furnace gainster and furnace lining |
| CN112710153A (en) * | 2021-02-05 | 2021-04-27 | 中钢南京环境工程技术研究院有限公司 | Preparation method of large-size machinable refractory heat-insulating plate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1340412A (en) * | 2000-09-01 | 2002-03-20 | 山东鲁阳股份有限公司 | Vacuum reverse sucking technology for shaping refractory fibre products |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1584797A (en) * | 1977-10-18 | 1981-02-18 | Combustion Linings | Linings for furnaces kilns or the like |
| JPH06307776A (en) * | 1993-04-26 | 1994-11-01 | Nippon Steel Corp | Heat insulation lining method for atmosphere furnace |
-
2011
- 2011-12-23 CN CN201110437585.XA patent/CN102506578B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1340412A (en) * | 2000-09-01 | 2002-03-20 | 山东鲁阳股份有限公司 | Vacuum reverse sucking technology for shaping refractory fibre products |
Non-Patent Citations (6)
| Title |
|---|
| JP昭54-77204A 1979.06.20 |
| JP特开平6-307776A 1994.11.01 |
| 傅顺德.超高温工业炉用优异的炉衬材料.《工业炉》.1997,(第3期),第45-49页. |
| 工业炉窑用耐火纤维及施工技术;王红;《金属制品》;20001025;第26卷(第5期);第10-13页 * |
| 王红.工业炉窑用耐火纤维及施工技术.《金属制品》.2000,第26卷(第5期),第10-13页. |
| 超高温工业炉用优异的炉衬材料;傅顺德;《工业炉》;19970825(第3期);第45-49页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102506578A (en) | 2012-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101585710B (en) | Refractory material for coal loading port of coke oven | |
| CN103044065B (en) | Porous oxide ceramic heat insulating material for kilns and preparation method of porous oxide ceramic heat insulating material | |
| CN107344857A (en) | A kind of high-strength low heat conductivity fire resisting energy-conservation castable and preparation method thereof | |
| CN105130468B (en) | A kind of flame-proof thermal insulation material and preparation method thereof | |
| CN101392990A (en) | Method for producing high performance indefinite fire-resistant material charcoal calcining fire wall | |
| CN103288460A (en) | Casting material for prefabricating burner block of annular heating furnace | |
| CN111099901A (en) | Mullite refractory brick with high thermal shock resistance and production method thereof | |
| CN105777158A (en) | Siliceous dry material for tundish for steel smelting as well as production method and construction method | |
| CN102506578B (en) | Forming method of full-fiber monolithic furnace lining | |
| CN100595044C (en) | Method for producing light high strength sintered brick using city sludge and wet-discharged flyash | |
| CN115745633B (en) | Cordierite-mullite spray coating and preparation method thereof | |
| CN102374773A (en) | Modification method for carbon rotary kiln settling chamber | |
| CN106316429A (en) | Carbon roaster flue wall guy brick precast block and production method thereof | |
| CN102297588A (en) | Composite insulating brick for kiln liner of rotary kiln and manufacturing method of brick | |
| CN206521438U (en) | A kind of circle fluidized-bed gasification furnace builds formula inboard wall of burner hearth by laying bricks or stones | |
| CN106518102A (en) | Refractory brick with low coefficient of linear expansion and preparation method thereof | |
| CN104529480B (en) | Production method of mechanically press-molded high-temperature baffle brick | |
| CN103851916B (en) | White afrodite manufactures the method for heat accumulating type forge furnace | |
| CN105130459A (en) | Aluminum-use anode carbon roasting furnace fire path wall burning-free prefabricated big brick | |
| CN102173413B (en) | Prefabricated refractory wallboard used for graphitized furnace and manufacture method thereof | |
| CN212205644U (en) | External combustion type light-burning shaft kiln with supporting device | |
| CN204309080U (en) | A kind of vibrating forming machine for the production of high temperature baffle brick | |
| CN107032801A (en) | A kind of Heat Loss in Oil Refining Heating Furnace attached wall refractory brick and preparation method thereof | |
| CN204555684U (en) | A kind of siccative oven inner liner | |
| CN211339312U (en) | Refractory heat-preservation lime kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |