CN104400330A - Processing method of full steel pipe protected by refractory material - Google Patents
Processing method of full steel pipe protected by refractory material Download PDFInfo
- Publication number
- CN104400330A CN104400330A CN201410534513.0A CN201410534513A CN104400330A CN 104400330 A CN104400330 A CN 104400330A CN 201410534513 A CN201410534513 A CN 201410534513A CN 104400330 A CN104400330 A CN 104400330A
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- China
- Prior art keywords
- refractory material
- trunnion
- mould
- processing method
- inner bag
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/50—Furnace black ; Preparation thereof
Abstract
The invention discloses a processing method of a full steel pipe protected by a refractory material. A steel plate is produced to a liner, and the refractory material prepared by evenly mixing chrome corundum and a binding agent is cast in the liner to obtain the full steel pipe protected by the refractory material; in the pipe produced by the method, the volume density of the refractory material is at least 3.0 g/cm3, and approaches the volume density of 3.2 g/cm3 of machine-made bricks; and the refractory material can bear the external force damage strength of 20 MPa approaching the strength of cement, can bear the scour from high-temperature and high-speed air flows without generating the deformation, and is smooth in inner wall, so that high-temperature gas can quickly pass through, raw oil is continuously and stably shorn and atomized, the product quality can be preferably guaranteed, and the service life of the life is prolonged.
Description
Technical field
The invention belongs to processing method technical field, relate to the processing method of the all-steel trunnion of the refractory material protection used in a kind of processing method of trunnion, particularly carbon black process.
Background technology
The core component trunnion of black reactor is the feature of new process carbon black process units, and the shape of trunnion decides carbon black mass and the production rate of process operation.Existing trunnion uses high-temperature refractory to build by laying bricks or stones to form, due to reasons such as manufacture, uses, and in use frequent washing away because of high-temperature high-speed airflow, and then shape changes, inwall becomes coarse, causes gas flow rate unstable, feedstock oil secondary-atomizing is destroyed, and product quality produces fluctuation.
Summary of the invention
The present invention, in order to overcome the defect of prior art, devises the processing method of the all-steel trunnion of a kind of refractory material protection, and in the trunnion that profit is obtained in this way, the bulk density of refractory material is at least 3.0g/cm
3, close to the bulk density 3.2g/cm of machine made brick
3and there is the intensity bearing 20MPa outside destroy, ensure that the requirement of strength that carrying between installation period and initial stage heat up, with outside recirculated water chuck with the use of, reduce the surface temperature of refractory material, the intensity under the condition of high temperature is maintained, erosion resistibility is strengthened, keep inner wall smooth, make feedstock oil be sheared atomization sustainedly and stably, the continuous operation of producing can be ensured better.
Concrete technical scheme of the present invention is: a kind of processing method of all-steel trunnion of refractory material protection, comprises following steps:
Prepared by A, inner bag, use steel plate bushing machine, steel plate is processed into tubular inner bag, and carries out machined correction to the inwall of inner bag and diameter, ensures that error amount is within 0.5mm, and offers oil gun mouth through hole at the correspondence position of inner bag;
B, mould are installed, and are fixed in inner bag by mould with anchoring piece, and make the Split mold of many lobes fix the tubular forming entirety, and leave between mould and inner bag and fill gap, anchoring piece and inner bag are welded and fixed;
C, refractory material are built, pink fused alumina, bonding agent are mixed and make refractory material, wherein the percentage by weight of bonding agent is 3 ~ 5%, is built by refractory material in the filling gap in progressive rapid B, and carry out ramming, until the bulk density of refractory material at least reaches 3.0g/cm
3, leave standstill and obtain semi-finished product trunnion in 5 hours;
D, sizing of heating, be slowly heated to 100 ~ 150 DEG C by semi-finished product trunnion in step C, and heated at constant temperature 48 hours makes refractory material solidify and reaches the intensity bearing 20MPa outside destroy, naturally cooling to room temperature;
E, mould are removed, and are removed respectively by mould, and carry out the repairing of flatness to the inwall of refractory material, obtain the all-steel trunnion of refractory material protection.
In described step B, after mould is in place, use mould block by oil gun mouth through hole in oil gun mouth through hole and stretch out oil gun mouth through hole outward and the outer wall of mould fit tightly.
In described step C, when building refractory material, building after highly reaching 30 ~ 50mm, carrying out a ramming, make the bulk density of refractory material at least reach 3.0g/cm
3, then proceed to build, after building and highly again increasing 30 ~ 50mm, then carry out a ramming, make the bulk density of refractory material at least reach 3.0g/cm
3, iterative cycles is until one-piece casting process terminates.
In described step C, the percentage by weight of bonding agent is 3%.
In described step D, the time of slowly heating remains on 2 ~ 4 hours, intensification per hour 20 ~ 35 DEG C.
In described step D, in 48 hours of heated at constant temperature, within first 24 hours, the heating process to semi-finished product trunnion is not for adding insulation cover heating, and latter 24 hours for adding insulation cover heating.
The invention has the beneficial effects as follows: pink fused alumina has that refractoriness is high, intensity is large, good thermal shock stability, resistance to corrosion are strong, resistance to erosion, the feature that wear-resistant, high volume is stablized, elevated temperature strength is high; steel plate is made inner bag; and mix by pink fused alumina and bonding agent the refractory material made inner the building of inner bag; obtain the all-steel trunnion of refractory material protection, trunnion has optimum combination property in the temperature range of 1850 ~ 2000 DEG C.In trunnion, the bulk density of refractory material is at least 3.0g/cm
3, close to the bulk density 3.2g/cm of machine made brick
3and there is the intensity bearing 20MPa outside destroy, ensure that the requirement of strength that carrying between installation period and initial stage heat up, with outside recirculated water chuck with the use of, reduce the surface temperature of refractory material, intensity under the condition of high temperature is maintained, erosion resistibility is strengthened, and keeps inner wall smooth, makes feedstock oil be sheared atomization sustainedly and stably, the continuous operation of producing can be ensured better, and extend the interval of trunnion periodic replacement.
Detailed description of the invention
A processing method for the all-steel trunnion of refractory material protection, comprises following steps:
Prepared by A, inner bag, use steel plate bushing machine, steel plate is processed into tubular inner bag, and carries out machined correction to the inwall of inner bag and diameter, ensures that error amount is within 0.5mm, and offers oil gun mouth through hole at the correspondence position of inner bag;
B, mould are installed, with anchoring piece, mould is fixed in inner bag, and make the Split mold of many lobes fix the tubular forming entirety, leave between mould and inner bag and fill gap, anchoring piece and inner bag are welded and fixed, after mould is in place, use rod shape object block by oil gun mouth through hole in oil gun mouth through hole and stretch out oil gun mouth through hole outward and the outer wall of mould fit tightly, can prevent oil gun mouth through hole from being blocked by refractory material;
C, refractory material are built, pink fused alumina, bonding agent are mixed and make refractory material, wherein the percentage by weight of bonding agent is preferably 3%, refractory material is built in the filling gap in progressive rapid B, build after highly reaching 30 ~ 50mm, carry out a ramming, make the bulk density of refractory material at least reach 3.0g/cm
3, then proceed to build, after building and highly again increasing 30 ~ 50mm, then carry out a ramming, make the bulk density of refractory material at least reach 3.0g/cm
3iterative cycles, until one-piece casting process terminates, leaves standstill and obtains semi-finished product trunnion in 5 hours, thisly build the mode hocketed with ramming, the bulk density of refractory material can be controlled more accurately, make the bulk density 3.2g/cm of bulk density close to machine made brick of refractory material
3;
D, sizing of heating, semi-finished product trunnion in step C was slowly heated to 100 ~ 150 DEG C with the speed of intensification per hour 20 ~ 30 DEG C in 2 ~ 4 hours, heated at constant temperature 48 hours, within first 24 hours, the heating process to semi-finished product trunnion is not for adding insulation cover heating, latter 24 hours for adding insulation cover heating, refractory material solidified and reaches the intensity bearing 20MPa outside destroy, close to the intensity of cement, naturally cooling to room temperature;
E, mould are removed; mould is removed respectively; and the inwall of refractory material is carried out to the repairing of flatness; obtain the all-steel trunnion of refractory material protection; trunnion has good resistance to high temperature corrosion ability and sherardizing steel ability; washing away of high-temperature high-speed airflow can be born; higher load softening point is had during high temperature;, can not deformation be there is, inner wall smooth in good formability; gas can be quickly move through; make feedstock oil be sheared atomization sustainedly and stably, product quality can be ensured better, extend the service life of trunnion.
Provide some technical parameters of trunnion and the existing refractory material trunnion utilizing processing method of the present invention to obtain below, as shown in table 1:
Table 1
| Performance | Existing refractory material trunnion | The trunnion that the present invention obtains |
| Bulk density g/cm 3 | 3.25 | 3.0～3.2 |
| Compressive resistance MPa | 100 | 80 |
| Refractoriness (DEG C) > | 1800 | 2000 (surfaces) |
| Load softening point 0.2MPa*6% | 1700 | 1850 |
| Resistance to erosion erosiveness | Generally | Well |
| Service life (h)≤ | 2160 | 3000 |
From the data of table 1, the bulk density of the trunnion utilizing processing method of the present invention to obtain is 3.0 ~ 3.2g/cm
3, close to the bulk density of existing refractory material trunnion, reach the bulk density 3.2g/cm of machine made brick
3, compressive resistance up to 80MPa, recirculated water cooling effect coordinate under, refractoriness and load softening point are all high than existing refractory material trunnion, resistance to erosion ability is better, can bear washing away of the high-temperature high-speed airflow higher than existing technique, keep higher surface strength, not easily there is deformation, inner wall smooth, makes feedstock oil be sheared atomization sustainedly and stably, can ensure product quality better, service life up to 3000h, can substantially prolongs the service life of trunnion.
Claims (6)
1. a processing method for the all-steel trunnion of refractory material protection, is characterized in that comprising following steps:
Prepared by A, inner bag, use steel plate bushing machine, steel plate is processed into tubular inner bag, and carries out machined correction to the inwall of inner bag and diameter, ensures that error amount is within 0.5mm, and offers oil gun mouth through hole at the correspondence position of inner bag;
B, mould are installed, and are fixed in inner bag by mould with anchoring piece, and make the Split mold of many lobes fix the tubular forming entirety, and leave between mould and inner bag and fill gap, anchoring piece and inner bag are welded and fixed;
C, refractory material are built, pink fused alumina, bonding agent are mixed and make refractory material, wherein the percentage by weight of bonding agent is 3 ~ 5%, is built by refractory material in the filling gap in progressive rapid B, and carry out ramming, until the bulk density of refractory material at least reaches 3.0g/cm
3, leave standstill and obtain semi-finished product trunnion in 5 hours;
D, sizing of heating, be slowly heated to 100 ~ 150 DEG C by semi-finished product trunnion in step C, and heated at constant temperature 48 hours makes refractory material solidify and reaches the intensity bearing 20MPa outside destroy, naturally cooling to room temperature;
E, mould are removed, and are removed respectively by mould, and carry out the repairing of flatness to the inwall of refractory material, obtain the all-steel trunnion of refractory material protection.
2. the processing method of the all-steel trunnion of a kind of refractory material protection according to claim 1; it is characterized in that: in described step B; after mould is in place, use mould block by oil gun mouth through hole in oil gun mouth through hole and stretch out oil gun mouth through hole outward and the outer wall of mould fit tightly.
3. the processing method of the all-steel trunnion of a kind of refractory material protection according to claim 1; it is characterized in that: in described step C, when building refractory material, building after highly reaching 30 ~ 50mm; carry out a ramming, make the bulk density of refractory material at least reach 3.0g/cm
3, then proceed to build, after building and highly again increasing 30 ~ 50mm, then carry out a ramming, make the bulk density of refractory material at least reach 3.0g/cm
3, iterative cycles is until one-piece casting process terminates.
4. the processing method of the all-steel trunnion of a kind of refractory material protection according to claim 1, it is characterized in that: in described step C, the percentage by weight of bonding agent is 3%.
5. the processing method of the all-steel trunnion of a kind of refractory material protection according to claim 1, it is characterized in that: in described step D, the time of slowly heating remains on 2 ~ 4 hours, intensification per hour 20 ~ 35 DEG C.
6. the processing method of the all-steel trunnion of a kind of refractory material protection according to claim 1; it is characterized in that: in described step D; in 48 hours of heated at constant temperature, within first 24 hours, the heating process to semi-finished product trunnion is not for adding insulation cover heating, and latter 24 hours for adding insulation cover heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410534513.0A CN104400330B (en) | 2014-10-11 | 2014-10-11 | A kind of processing method of the all-steel trunnion of refractory material protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410534513.0A CN104400330B (en) | 2014-10-11 | 2014-10-11 | A kind of processing method of the all-steel trunnion of refractory material protection |
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| CN104400330A true CN104400330A (en) | 2015-03-11 |
| CN104400330B CN104400330B (en) | 2016-08-24 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104576A (en) * | 1986-07-03 | 1988-01-27 | 化学工业部炭黑工业研究设计所 | Produce the sooty method and apparatus |
| US4902487A (en) * | 1988-05-13 | 1990-02-20 | Johnson Matthey, Inc. | Treatment of diesel exhaust gases |
| CN2075198U (en) * | 1990-09-05 | 1991-04-17 | 天津炭黑厂 | Improved structure of carbon black furnace body |
| JPH04359068A (en) * | 1991-06-04 | 1992-12-11 | Tokai Carbon Co Ltd | Carbon black producing furnace |
| CN202595019U (en) * | 2012-05-18 | 2012-12-12 | 邯郸黑猫炭黑有限责任公司 | Octagon throat tube device for 40,000 ton/year carbon block reaction furnace |
| CN202688250U (en) * | 2012-07-24 | 2013-01-23 | 江西黑猫炭黑股份有限公司 | Throat pipe device favorable for increasing specific surface area of carbon black |
| CN102994676A (en) * | 2012-12-20 | 2013-03-27 | 武钢集团昆明钢铁股份有限公司 | Small wear-resistant bush for blast-furnace tuyere and manufacture method thereof |
| CN203833862U (en) * | 2014-04-11 | 2014-09-17 | 嘉峪关大友嘉能化工有限公司 | Carbon black reacting furnace throat pipe device |
-
2014
- 2014-10-11 CN CN201410534513.0A patent/CN104400330B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104576A (en) * | 1986-07-03 | 1988-01-27 | 化学工业部炭黑工业研究设计所 | Produce the sooty method and apparatus |
| US4902487A (en) * | 1988-05-13 | 1990-02-20 | Johnson Matthey, Inc. | Treatment of diesel exhaust gases |
| CN2075198U (en) * | 1990-09-05 | 1991-04-17 | 天津炭黑厂 | Improved structure of carbon black furnace body |
| JPH04359068A (en) * | 1991-06-04 | 1992-12-11 | Tokai Carbon Co Ltd | Carbon black producing furnace |
| CN202595019U (en) * | 2012-05-18 | 2012-12-12 | 邯郸黑猫炭黑有限责任公司 | Octagon throat tube device for 40,000 ton/year carbon block reaction furnace |
| CN202688250U (en) * | 2012-07-24 | 2013-01-23 | 江西黑猫炭黑股份有限公司 | Throat pipe device favorable for increasing specific surface area of carbon black |
| CN102994676A (en) * | 2012-12-20 | 2013-03-27 | 武钢集团昆明钢铁股份有限公司 | Small wear-resistant bush for blast-furnace tuyere and manufacture method thereof |
| CN203833862U (en) * | 2014-04-11 | 2014-09-17 | 嘉峪关大友嘉能化工有限公司 | Carbon black reacting furnace throat pipe device |
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| CN104400330B (en) | 2016-08-24 |
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