CN105865195A - Retention ring of nickel laterite ore rotary kiln - Google Patents
Retention ring of nickel laterite ore rotary kiln Download PDFInfo
- Publication number
- CN105865195A CN105865195A CN201610338703.4A CN201610338703A CN105865195A CN 105865195 A CN105865195 A CN 105865195A CN 201610338703 A CN201610338703 A CN 201610338703A CN 105865195 A CN105865195 A CN 105865195A
- Authority
- CN
- China
- Prior art keywords
- rotary kiln
- collet
- retention ring
- kiln
- nickel ore
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a retention ring of a nickel laterite ore rotary kiln. The retention ring comprises a retention ring body which is an annular retention ring, and the axial section of the retention ring body is in a trapezoid shape. The retention ring body comprises a material facing face, a discharging face, an upper end face and a lower bottom face which is fixed into the rotary kiln. The included angle ranging from 15 degrees to 30 degrees is formed between the material facing face and the lower bottom face 5. The retention ring is installed in the nickel laterite ore rotary kiln, materials overturn when passing through the retention ring, the material speed and the material moving track are changed, and therefore the material moving speed is reduced, the time for the materials to stay in the kiln is prolonged, and accordingly sufficient reduction time is obtained for the materials in the kiln. The heat efficiency and heat utilization rate are improved, the retention ring has the beneficial effects that energy consumption is greatly reduced, the reduction time is shortened, material reduction is sufficient, the yield is increased, and discharging is facilitated, and meanwhile the damage to a lining of the rotary kiln is greatly reduced.
Description
Technical field
The invention belongs to structure of refractory field, be specifically related to a kind of lateritic nickel ore rotary kiln collet.
Background technology
In recent years, China's lateritic nickel ore direct reduction process for rotary kiln technology develops rapidly, and its operation principle is: with laterite ferronickel
Ore deposit is raw material, with cheap coal, mud coal, middle coal as reducing agent, with rotary kiln as main production equipments, by material the pre-heat treatment
-reducing and smelting technique-sorting refine, three steps, so that it may form product, there is technique simple, energy consumption is little, pollutes little, becomes
This is the lowest, not by size limit, and the advantage such as good product quality (nickeliferous height reaches 10～15 nickel).Rotary kiln includes kiln hood
Temperate zone thermal zone, middle, low temperate zone, the temperature that under duty, kiln hood is thermal zone is 1200 DEG C～800 DEG C, the temperature in middle temperate zone
Be 500 DEG C～800 DEG C, the temperature in low temperate zone be 200 DEG C～500 DEG C.In existing lateritic nickel ore rotary kiln, backgauge is set
Circle, to slow down the movement velocity of material, extends material residence time in kiln, thus material has obtained the most also in kiln
The former time.In rotary kiln, collet is in the following several ways: 1, some producer does not the most design collet；2, some producer
Only kiln hood high temperature is with collet；3, some producer has also done three collets in rotary kiln.But general collet
For cylindric collet, but in lateritic nickel ore high temperature section, material, by after high temperature, occurs partly melt or entirely melt state, in this state
Greatly, easily lump, the structure of common collet is unfavorable for discharging to lower material viscosity.
Summary of the invention
It is an object of the invention to provide a kind of lateritic nickel ore rotary kiln collet, in lateritic nickel ore rotary kiln, increase this collet,
Energy consumption can be greatly reduced, material reduction is abundant, shorten the recovery time, strengthen yield.
The technical scheme is that and be achieved through the following technical solutions:
A kind of lateritic nickel ore rotary kiln collet, including collet body 1, described collet body 1 is annular collet,
The axial cross section of collet body 1 is trapezoidal；Described collet body 1 includes meeting charge level 2, going out charge level 3, upper surface
4, being fixed on the bottom surface 5 within rotary kiln, described charge level 2 of meeting forms 15 °～the angle of 30 ° with bottom surface 5.
In the present invention, axial cross section refers to the cross section of the central shaft of the rotary kiln along fixing collet.
Described upper surface 4 is along the axial a length of 20-30cm of rotary kiln, and described bottom surface 5 is axial along rotary kiln of going to the bottom
A length of 150-200cm.
Can being poured molding by commercially available corundum-mullite castable and prepare of lateritic nickel ore rotary kiln collet of the present invention,
There is good anti-erosion, high abrasion resistance, high-intensity performance.
It is a further object to provide the lateritic nickel ore revolution being provided with 3 described lateritic nickel ore rotary kiln collets
Kiln；3 lateritic nickel ore rotary kiln collets are separately mounted to the kiln hood of rotary kiln, thermal zone and the intersection in middle temperate zone, middle temperature
Band and the intersection in low temperate zone.
It is arranged on 0.06-0.08 times that height is rotary kiln internal diameter of collet of rotary kiln end, is arranged on rotary kiln thermal zone
With the intersection in middle temperate zone, the 0.03-0.04 that height is rotary kiln internal diameter of the collet of the intersection in middle temperate zone and low temperate zone
Times.
Compared to the prior art, beneficial effects of the present invention:
The angle meeting charge level of lateritic nickel ore rotary kiln collet of the present invention is between 15 ° to 30 °, at lateritic nickel ore rotary kiln
This collet of interior installation, material rolls when by collet, changes the speed of material and runs track, thus slow down thing
The movement velocity of material, extends material residence time in kiln, so that material has obtained the sufficient recovery time in kiln；
Improve thermal efficiency utilization rate, have be greatly reduced energy consumption, shorten recovery time, material reduction fully, strengthen yield, be beneficial to
The advantages such as discharging, greatly reduce the damage to inner liner of rotary kiln simultaneously.Increase the lateritic nickel ore rotary kiln of collet of the present invention,
With same diameter, rotating speed but not increasing compared with the rotary kiln of collet, in identical production time section, energy consumption reduces 30%
Above.
Accompanying drawing explanation
Fig. 1 is the structural representation of lateritic nickel ore rotary kiln collet of the present invention；In Fig. 1,1-collet body, 2-meets charge level
2,3-go out charge level, 4-upper surface, 5-bottom surface.
Fig. 2 is the lateritic nickel ore rotary kiln the being provided with collet of the present invention schematic cross-section along rotary kiln central shaft；In Fig. 2,
6-kiln body, 7-lateritic nickel ore rotary kiln collet.
Detailed description of the invention
In conjunction with specific embodiments technical scheme is described further.
As it is shown in figure 1, a kind of lateritic nickel ore rotary kiln collet, including collet body 1, described collet body 1 is
Annular collet, the axial cross section of collet body 1 is trapezoidal；Described collet body 1 includes meeting charge level 2, going out charge level
3, upper surface 4, be fixed on the bottom surface 5 within rotary kiln, described charge level 2 of meeting forms 15 °～30 ° with bottom surface 5
Angle；Described upper surface 4 is along the axial a length of 20-30cm of rotary kiln, and described bottom surface 5 is along rotary kiln axle of going to the bottom
To a length of 150-200cm.
Embodiment 1
In the present embodiment, meet charge level 2 and the bottom surface 5 of lateritic nickel ore rotary kiln collet form the angle of 15 °.
As in figure 2 it is shown, install the lateritic nickel ore rotary kiln collet described in 3 the present embodiment in lateritic nickel ore rotary kiln, red
Soil nickel minerals rotary kiln is latus rectum rotary kiln, and design parameter is: diameter ￠ 4.4m, length 100m；Control rotating speed: 1.7-2 turn/
Point.
3 lateritic nickel ore rotary kiln collets are separately mounted to the kiln hood of rotary kiln, the thermal zone intersection (distance with middle temperate zone
Kiln hood collet 40 meters), the intersection (distance kiln hood collet 55 meters) in middle temperate zone and low temperate zone.
It is arranged on that rotary kiln is thermal zone and the intersection in middle temperate zone, middle temperate zone with the height of the collet of the intersection in low temperate zone are
0.18m；The height of the collet being arranged on rotary kiln end is 0.35m.
Embodiment 2
In the present embodiment, meet charge level 2 and the bottom surface 5 of lateritic nickel ore rotary kiln collet form the angle of 30 °.
Comparative example 1
The present embodiment use cylindric collet as lateritic nickel ore rotary kiln collet.
With reference to embodiment 1, lateritic nickel ore rotary kiln is installed 3 cylindric collets.
In investigation embodiment 1 and comparative example 1, the parameter such as production capacity, energy consumption in lateritic nickel ore rotary kiln operation process, is shown in Table 1.
Table 1
Claims (4)
1. a lateritic nickel ore rotary kiln collet, it is characterised in that include that collet body, described collet body are ring
Shape collet, the axial cross section of collet body is trapezoidal；Described collet body includes meeting charge level, going out charge level, upper end
Face, being fixed on the bottom surface within rotary kiln, described charge level of meeting forms 15 °～the angle of 30 ° with bottom surface.
Lateritic nickel ore rotary kiln collet the most according to claim 1, it is characterised in that described upper surface is along rotary kiln
Axial a length of 20-30cm, described bottom surface is along the axial a length of 150-200cm of rotary kiln of going to the bottom.
3. being provided with the lateritic nickel ore rotary kiln of lateritic nickel ore rotary kiln collet described in 3 claim 1, its feature exists
It is separately mounted to the kiln hood of rotary kiln, thermal zone and the intersection in middle temperate zone, middle temperate zone in 3 lateritic nickel ore rotary kiln collets
Intersection with low temperate zone.
Lateritic nickel ore rotary kiln the most according to claim 3, it is characterised in that be arranged on the collet of rotary kiln end
Be highly 0.06-0.08 times of rotary kiln internal diameter, be arranged on rotary kiln thermal zone with the intersection in middle temperate zone, middle temperate zone and low temperature
0.03-0.04 times that height is rotary kiln internal diameter of the collet of the intersection of band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338703.4A CN105865195A (en) | 2016-05-20 | 2016-05-20 | Retention ring of nickel laterite ore rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338703.4A CN105865195A (en) | 2016-05-20 | 2016-05-20 | Retention ring of nickel laterite ore rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105865195A true CN105865195A (en) | 2016-08-17 |
Family
ID=56635595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610338703.4A Pending CN105865195A (en) | 2016-05-20 | 2016-05-20 | Retention ring of nickel laterite ore rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105865195A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427360A (en) * | 1993-09-24 | 1995-06-27 | Indresco Inc. | Refractory brick design for open end of refractory lined vessel |
| CN2711663Y (en) * | 2004-05-17 | 2005-07-20 | 黄吉先 | Rotary kiln with material stop ring |
| CN201942700U (en) * | 2011-01-29 | 2011-08-24 | 沈阳博联特熔融还原科技有限公司 | Direct reduced iron rotary kiln |
| CN103822472A (en) * | 2014-01-22 | 2014-05-28 | 洛阳洛华窑业有限公司 | Castable kiln structure of cylindrical heat rotary equipment |
| CN205878893U (en) * | 2016-05-20 | 2017-01-11 | 江苏江能新材料科技有限公司 | Laterite -nickel ore ore deposit rotary kiln retention ring and laterite -nickel ore ore deposit rotary kiln |
-
2016
- 2016-05-20 CN CN201610338703.4A patent/CN105865195A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5427360A (en) * | 1993-09-24 | 1995-06-27 | Indresco Inc. | Refractory brick design for open end of refractory lined vessel |
| CN2711663Y (en) * | 2004-05-17 | 2005-07-20 | 黄吉先 | Rotary kiln with material stop ring |
| CN201942700U (en) * | 2011-01-29 | 2011-08-24 | 沈阳博联特熔融还原科技有限公司 | Direct reduced iron rotary kiln |
| CN103822472A (en) * | 2014-01-22 | 2014-05-28 | 洛阳洛华窑业有限公司 | Castable kiln structure of cylindrical heat rotary equipment |
| CN205878893U (en) * | 2016-05-20 | 2017-01-11 | 江苏江能新材料科技有限公司 | Laterite -nickel ore ore deposit rotary kiln retention ring and laterite -nickel ore ore deposit rotary kiln |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |