CN104792156A - Manufacturing method for integral type tertiary air duct of rotary kiln - Google Patents
Manufacturing method for integral type tertiary air duct of rotary kiln Download PDFInfo
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- CN104792156A CN104792156A CN201510203869.0A CN201510203869A CN104792156A CN 104792156 A CN104792156 A CN 104792156A CN 201510203869 A CN201510203869 A CN 201510203869A CN 104792156 A CN104792156 A CN 104792156A
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- tertiary
- rotary kiln
- cage type
- air pipe
- reinforcing bar
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Abstract
Provided is a manufacturing method for an integral type tertiary air duct of a rotary kiln. The tertiary air duct comprises a tertiary air duct metal duct body, castables, a metal anchoring part and adhesive tape, wherein the tertiary air duct metal duct body is connected with the inner wall of the rotary kiln body, the castables are laid on the outside of the metal duct body, the metal anchoring part is arranged in the castables, and the adhesive tape is wound around the anchoring part. The appearance of the castables is a circular truncated cone, a circular-truncated-cone-shaped cage type steel reinforcement is adopted as the metal anchoring part, the adhesive tape is wound around the outside of the tertiary air duct metal duct body and the cage type steel reinforcement, and the radial bottom end of the cage type steel reinforcement is welded to the inner wall of the rotary kiln body. The manufacturing method includes the following steps of making the cage type steel reinforcement and a conical mold, welding the bottom of the cage type steel reinforcement to the inner wall of the rotary kiln body, winding the adhesive tape on the tertiary air duct metal duct body and the cage type steel reinforcement, covering the cage type steel reinforcement with the conical mold, laying the castables between the conical mold and the tertiary air duct metal duct body and dismounting the mold after the castables are dry and stable. The tertiary air duct manufactured through the method is stable in structure and long in service life, and the castables are not prone to fall off.
Description
Technical field
Patent of the present invention belongs to the third wind duct structure technical field of calcining petroleum coke system rotary kiln.
Background technology
Calcining petroleum coke system need experience long heating, cooling process when starting and shut down, to guarantee calcining petroleum coke system rotary kiln and afterburner refractory material thereof not because violent variations in temperature cracking damage.Minimizing calcining petroleum coke system overhaul and stop frequency are the keys promoting calcining petroleum coke energy saving of system consumption reduction.And in calcining petroleum coke system, the loss of tertiary-air pipe causes rotary kiln overhaul and start and stop equipment one of the main reasons frequently thereof.In actual operation process, the one of the main reasons causing tertiary-air pipe to be damaged is that the triple air duct high temperature castable life-span is too short, and tertiary-air pipe directly faces high temperature and material thereof in kiln and washes away after castable comes off.Finding when research observation tertiary-air pipe castable comes off rule, is that tertiary-air pipe castable comes off the high-incidence season when start and stop and change inventory thereof.Can judge thus, tertiary-air pipe castable the most easily comes off when kiln temperature changes.
As shown in Figure 1 and Figure 2, castable A is cylindrical shape to existing tertiary-air pipe, and the thickness of castable is 12cm, and it, therefore more easily comes off owing to being subject to having the greatest impact of high temperature and variations in temperature near the place of rotary kiln body inwall B.In addition existing metal anchorage C adopts Y shape Rebar anchor, Y shape Rebar anchor only with between tertiary-air pipe metal tube D welds, although each anchoring piece is each other without connection, cause attachment between castable and metal anchorage built on the sand, castable easily comes off.
Summary of the invention
The object of the invention is to solve prior art Problems existing, providing a kind of stabilized structure, castable difficult drop-off, long service life, can effectively reduce the monoblock type rotary kiln third wind duct structure manufacturing technology of rotary kiln overhaul number of times.
Object of the present invention is achieved through the following technical solutions.
A manufacture method for monoblock type rotary kiln tertiary-air pipe, tertiary-air pipe of the present invention includes the tertiary-air pipe metal tube, the castable be laid in outside metal tube, the metal anchorage be arranged in castable, the adhesive tape be wound on anchoring piece that connect with rotary kiln body inwall; The profile of described castable is set to circular platform type, metal anchorage adopts the cage type reinforcing bar of circular platform type, tertiary-air pipe metal tube outside and cage type reinforcing bar are all wound with adhesive tape, and the bottom of the radial reinforcing bar of cage type reinforcing bar and rotary kiln body inwall are by being welded to connect; Manufacture method is: make cage type reinforcing bar and taper die in advance, first by cage type reinforcing bar bottom welding in rotary kiln body inwall, adhesive tape is wound around again on tertiary-air pipe metal tube and cage type reinforcing bar, at the upper conical mould of cage type reinforcing bar outer cover, carry out castable on this basis to lay, castable is laid between taper die and tertiary-air pipe metal tube, material feeding to be poured dry and hard stable after dismantle taper die, complete the manufacture of tertiary-air pipe.
The top thickness of castable of the present invention is about about 12cm, and bottom thickness is about about 36cm.
Because castable have employed the comparatively thick large circular platform type in bottom, enhance its intensity near rotary kiln body inwall place, can the impact that brings of withstand high temperatures and variations in temperature better.Metal anchorage adopts the cage type reinforcing bar of circular platform type, and cage type reinforcing bar bottom is welded with rotary kiln body inwall in addition, and castable more firmly can be adhered to and is enclosed on anchoring piece, difficult drop-off.Tertiary-air pipe metal tube outside and cage type reinforcing bar are all wound around adhesive tape, the space between castable and metal parts is formed after adhesive tape burning in production process, effectively can reduce metal structure dilation that alternating temperature in kiln causes to the destruction of castable, avoiding the metal heated expansion rate of airduct to be greater than, castable expanded by heating rate produces being split up.
Adopt third wind duct structure of the present invention and manufacture method thereof, the mechanical strength of Integral lifting calcining petroleum coke system tertiary-air pipe castable and stability, improve petroleum coke shock resistance in the anti-kiln of castable.The present invention extends the service life of tertiary-air pipe, can effectively reduce costs, and promotes calcining petroleum coke energy saving of system emission-reduction technology level.
Accompanying drawing explanation
Fig. 1 is the structural representation that existing tertiary-air pipe is connected with rotary kiln body inwall;
Fig. 2 is the top view of tertiary-air pipe in Fig. 1;
Fig. 3 is the structural representation that the present invention is connected with rotary kiln body inwall;
Fig. 4 is the structural representation of cage reinforcing bar.
Detailed description of the invention
As shown in Figure 3, monoblock type rotary kiln tertiary-air pipe of the present invention includes the tertiary-air pipe metal tube 2 connected with rotary kiln body inwall 1, the castable 3 be laid in outside metal tube, the metal anchorage 4 be arranged in castable; The profile of castable 3 is set to circular platform type, the cage type reinforcing bar of the corresponding employing of metal anchorage 4 circular platform type as shown in Figure 4.The top thickness of castable is about about 12cm, and bottom thickness is about about 36cm.At tertiary-air pipe metal tube 2, outside and cage type reinforcing bar is all wound around adhesive tape 5, pad 6 is preset and with rotary kiln body inwall 1 by being welded to connect in the bottom of the radial reinforcing bar of cage type reinforcing bar.
When making of the present invention, make cage type reinforcing bar and taper die 7 in advance, first by cage type reinforcing bar bottom welding in rotary kiln body inwall, on tertiary-air pipe metal tube and cage type reinforcing bar, be wound around adhesive tape again destroy castable structure to avoid thermal expansion metal, at the upper conical mould of cage type reinforcing bar outer cover, carry out castable on this basis and lay, castable is laid between taper die and tertiary-air pipe metal tube, material feeding to be poured dry and hard stable after dismantle mould, complete the manufacture of tertiary-air pipe.
Claims (2)
1. the manufacture method of a monoblock type rotary kiln tertiary-air pipe, it is characterized in that, tertiary-air pipe of the present invention includes the tertiary-air pipe metal tube (2) connected with rotary kiln body inwall (1), the castable (3) be laid in outside metal tube, the metal anchorage (4) be arranged in castable, the adhesive tape (5) be wound on anchoring piece; The profile of described castable (3) is set to circular platform type, metal anchorage (4) adopts the cage type reinforcing bar of circular platform type, tertiary-air pipe metal tube (2) outside and cage type reinforcing bar are all wound with adhesive tape (5), and the bottom of the radial reinforcing bar of cage type reinforcing bar and rotary kiln body inwall (1) are by being welded to connect; Manufacture method is: make cage type reinforcing bar and taper die (7) in advance, first by cage type reinforcing bar bottom welding in rotary kiln body inwall, adhesive tape (5) is wound around again on tertiary-air pipe metal tube (2) and cage type reinforcing bar, at the upper conical mould of cage type reinforcing bar outer cover (7), carry out castable on this basis to lay, castable (3) is laid between taper die and tertiary-air pipe metal tube, material feeding to be poured dry and hard stable after dismantle taper die, complete the manufacture of tertiary-air pipe.
2. the manufacture method of a kind of monoblock type rotary kiln tertiary-air pipe according to claim 1, is characterized in that, the top thickness of described castable (3) is 12cm, and bottom thickness is 36cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510203869.0A CN104792156A (en) | 2015-04-27 | 2015-04-27 | Manufacturing method for integral type tertiary air duct of rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510203869.0A CN104792156A (en) | 2015-04-27 | 2015-04-27 | Manufacturing method for integral type tertiary air duct of rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104792156A true CN104792156A (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510203869.0A Pending CN104792156A (en) | 2015-04-27 | 2015-04-27 | Manufacturing method for integral type tertiary air duct of rotary kiln |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040234794A1 (en) * | 2000-10-04 | 2004-11-25 | Hendrik Schadenberg | Process for providing a surface with a fire-proof and/or wear resistant lining |
| CN1667335A (en) * | 2004-03-09 | 2005-09-14 | 徐向成 | Composite secondary and triple lance of charcoal rotary kiln and making method thereof |
| CN2864538Y (en) * | 2005-12-19 | 2007-01-31 | 贵阳铝镁设计研究院 | Secondary and third wind duct structure for rotary kiln |
| CN202083226U (en) * | 2011-04-29 | 2011-12-21 | 上海宝钢工业检测公司 | High-temperature thermal insulating type anchoring piece |
| CN102798288A (en) * | 2011-05-26 | 2012-11-28 | 贵阳新高铝炭技术有限公司 | Novel wholly prefabricated tuyere of rotary kiln |
| CN202692675U (en) * | 2012-07-19 | 2013-01-23 | 长兴国盛耐火材料有限公司 | Tertiary air pipe straight cylinder prefabricated part |
| CN102954687A (en) * | 2012-11-13 | 2013-03-06 | 阿克苏天山多浪水泥有限责任公司 | Local oxygen-enriched combustion system of cement decomposition kiln |
| CN204115464U (en) * | 2014-09-28 | 2015-01-21 | 湖南创元新材料有限公司 | Rotary kiln tuyere |
-
2015
- 2015-04-27 CN CN201510203869.0A patent/CN104792156A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040234794A1 (en) * | 2000-10-04 | 2004-11-25 | Hendrik Schadenberg | Process for providing a surface with a fire-proof and/or wear resistant lining |
| CN1667335A (en) * | 2004-03-09 | 2005-09-14 | 徐向成 | Composite secondary and triple lance of charcoal rotary kiln and making method thereof |
| CN2864538Y (en) * | 2005-12-19 | 2007-01-31 | 贵阳铝镁设计研究院 | Secondary and third wind duct structure for rotary kiln |
| CN202083226U (en) * | 2011-04-29 | 2011-12-21 | 上海宝钢工业检测公司 | High-temperature thermal insulating type anchoring piece |
| CN102798288A (en) * | 2011-05-26 | 2012-11-28 | 贵阳新高铝炭技术有限公司 | Novel wholly prefabricated tuyere of rotary kiln |
| CN202692675U (en) * | 2012-07-19 | 2013-01-23 | 长兴国盛耐火材料有限公司 | Tertiary air pipe straight cylinder prefabricated part |
| CN102954687A (en) * | 2012-11-13 | 2013-03-06 | 阿克苏天山多浪水泥有限责任公司 | Local oxygen-enriched combustion system of cement decomposition kiln |
| CN204115464U (en) * | 2014-09-28 | 2015-01-21 | 湖南创元新材料有限公司 | Rotary kiln tuyere |
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Application publication date: 20150722 |