CN203269600U - Rotary kiln for calcining titanium dioxide with sulfuric acid method - Google Patents
Rotary kiln for calcining titanium dioxide with sulfuric acid method Download PDFInfo
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- CN203269600U CN203269600U CN 201320096495 CN201320096495U CN203269600U CN 203269600 U CN203269600 U CN 203269600U CN 201320096495 CN201320096495 CN 201320096495 CN 201320096495 U CN201320096495 U CN 201320096495U CN 203269600 U CN203269600 U CN 203269600U
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- rotary kiln
- titanium dioxide
- calcining
- hydraucone
- barrel body
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Abstract
The utility model provides a rotary kiln for calcining titanium dioxide with a sulfuric acid method. The rotary kiln comprises a barrel body, a combustion room and a kiln tail cover, wherein the middle barrel body is supported by three sets of riding wheels; the two ends of the barrel body are sealed by adopting sealing gaskets; the sealing gaskets are distributed in a fish scale shape; the inclined degree of the barrel body is 6-8% and a reversed horn mouth is formed in one part of the barrel body, which is 3.5-5.5m far away from a discharging opening; the reversed horn mouth comprises a shrinking opening (2), a throat pipe section (3) and an expanding opening (4); lifting boards (1) are arranged in front of the shrinking opening; the lifting boards are uniformly arranged along the axial direction of the barrel body. The rotary kiln disclosed by the utility model has the advantages of high output, low energy consumption and stable quality of calcined titanium dioxide.
Description
Technical field
The utility model relates to titanium white production equipment, is specifically related to a kind of rotary kiln for sulfuric acid method titanium pigment calcining, belongs to the titanium white production field.
Background technology
In the sulfuric acid method titanium pigment production technique, calcining is to determine one of three most critical operations of titanium dioxide quality.The calcination process of titanium dioxide is roughly as follows: the hydrolysate metatitanic acid is after solid-liquid separation is sloughed most of moisture, input has constant slope (being generally 3-5%) and slow rotating titanium dioxide rotary kiln (also claiming feed end or high-end), simultaneously the combustion chamber of kiln hood (being discharge end or low side) is blown into flame and the hot blast of cleaning in kiln, to material dewatered, desulfurization and transformation of crystal.Material after high-temperature calcination is by the kiln body and the self gravitation that tilt, from the combustion chamber blanking port of kiln hood out, then through the cooling abrasive dust operation of delivering to.
Obtain high-quality titanium dioxide, must strictly control the burning quality of titanium dioxide, therefore, it is quite crucial that the design of rotary kiln just seems.In existing titanium dioxide calcined by rotary kiln operation, ubiquitous problem is: 1. energy consumption is high, general titanium dioxide energy consumption 280-300 per ton ten thousand kilocalories; 2. plant factor is low, and single device yields poorly, and is general
Rotary kiln annual production 20000 tons of left and right only; 3. unstable product quality, particularly whiteness, colour killing rate, opacifying power fluctuation are very serious.
The purpose of this utility model is exactly for the problems referred to above, and the rotary kiln of titanium dioxide calcination process is carried out texture improvement, and a kind of rotary kiln for the sulfuric acid method titanium pigment calcining is provided.
The utility model content
The purpose of this utility model is to provide a kind of rotary kiln, and a kind of rotary kiln for the sulfuric acid method titanium pigment calcination process specifically is provided, and has that production capacity is high, energy consumption is low, the stay-in-grade advantage of titanium dioxide.
The titanium dioxide calcination rotary kiln that the utility model provides, comprise cylindrical shell, combustion chamber and kiln hood, middle cylindrical shell is supported by three groups of support rollers, the diaphragm seal sealing is adopted at the cylindrical shell two ends, and diaphragm seal is fish scale-shaped to be arranged, the cylindrical shell gradient is 6%-8%, be provided with down hydraucone at cylindrical shell from discharge port 3.5m-5.5m place, the hydraucone that falls comprises contraction mouth, trunnion section and enlarges mouthful, and the contraction mouth front is provided with material delivering plate, and material delivering plate is along drum shaft to even setting.
The hydraucone that falls can adopt the special refractories of the anti-etch of antistripping, also can adopt the high-alumina refractory brick, wherein, inclination angle between contraction mouth and tubular axis is 10 °-15 °, horizontal length is 2m-3m, the length of trunnion is 200mm-600mm, and the inclination angle that enlarges between mouth and tubular axis is 15 °-25 °.
Material delivering plate along from drum shaft to even setting can arrange the 4-8 bar, and every size is identical, and length is 1.5m-2.5m, height 80mm-150mm, and width is 80mm-160mm, plays all effects of even raising rate of heat exchange of stirring.
Adopt rotary kiln described in the utility model, in process of production, rotating speed is set to 1 minute/-3 minutes/circle of circle, and to extend high-temperature residence time, guarantee transformation of crystal and grow up the required time, about 2.5 hours, thus satisfy processing requirement.
Rotary kiln of the present utility model, due to the gradient that has improved cylindrical shell, arrange hydraucone near discharge port, and improved the rotary kiln rotating speed in actual production, can reduce bed thickness, improve the transfer efficiency of material and temperature, guaranteed the high-temperature residence time of material when improving calcination efficiency, reducing energy consumption, guaranteed the transformation of crystal time.The contraction mouth front is provided with along drum shaft to the material delivering plate that is evenly arranged, and has increased the stirring number of times, can avoid material and thermal-flame Long contact time and material sintering, has guaranteed the stability of quality product.Use rotary kiln of the present utility model, the single device production capacity improves more than 50%, and Energy Intensity Reduction surpasses 15%, and has obviously improved the stability of quality product, and the ratio of first-grade products brings up to 98%.
Description of drawings
Fig. 1 is that rotary kiln falls hydraucone and material delivering plate schematic diagram
Fig. 2 is that material delivering plate is along the diagrammatic cross-section of A-A direction
In Fig. 1-2: 1 is material delivering plate, and 2 is contraction mouth, and 3 is trunnion, and 4 for enlarging mouth.
Embodiment
For making those skilled in the art better understand the technical solution of the utility model, in conjunction with Figure of description, the utility model is described further.
Embodiment 1
As shown in Figure 1, rotary kiln is used in the titanium dioxide calcining, cylinder internal diameter 2.5m, and length 50m, gradient is set to 6%; Arrange hydraucone at distance high-temperature section discharge port 3.5m, the special refractories of the anti-etch of the employing of falling hydraucone antistripping, wherein, inclination angle between contraction mouth (2) and tubular axis is 12 °, horizontal length is 2m, trunnion (3) length is 400mm, and the inclination angle that enlarges between mouthful (4) and tubular axis is 20 °.As shown in Figure 2, the front of falling the hydraucone arranges 8 material delivering plates (1), the length 1.5m of material delivering plate, and height 80mm, width is 80mm.In production, adjusting rotating speed is 3 minutes/circle.
Rotary kiln of the present utility model, owing to having increased the cylindrical shell gradient, improved the rotary kiln rotating speed, and arrange hydraucone and material delivering plate, reduce bed thickness, improved material and temperature transfer efficiency, increased the stirring number of times, can avoid material and thermal-flame Long contact time and material sintering, thereby improve calcination efficiency, reduce energy consumption, guarantee the product burning quality.Adopt the rotary kiln in the present embodiment, titanium dioxide per ton anthracite used drops to 380 kilograms, Energy Intensity Reduction 15% by 450 kilograms; The output of single device titanium dioxide every day is increased to 75 tons by 50 tons, and output improves 50%; The ratio of first-grade products of quality product brings up to 98% by original 70%.
Embodiment 2
Titanium dioxide calcining rotary kiln, cylinder internal diameter 3m, length is 50m, and gradient is set to 7%, arranges hydraucone at distance high-temperature section discharge port 5.5m, the material of falling the hydraucone is with the special refractories of the anti-etch of antistripping, wherein, the inclination angle between contraction mouth and tubular axis is 15 °, and horizontal length is 2.5m, length of throat is 600mm, and the inclination angle that enlarges between mouth and tubular axis is 25 °.The front of falling the hydraucone arranges 8 material delivering plates, the length 2.5m of material delivering plate, height 120mm, width 80mm.In production, adjusting rotating speed is 2.5 minutes/circle.
Adopt the rotary kiln in the present embodiment, titanium dioxide per ton anthracite used drops to 350 kilograms per ton by 450 kilograms, and Energy Intensity Reduction surpasses 20%; The output of single device titanium dioxide every day increases to 90 tons by 50 tons, and output improves 80%; The quality product ratio of first-grade products brings up to 98% by original 80%.
Claims (10)
1. rotary kiln is used in sulfuric acid method titanium pigment calcining, comprises cylindrical shell, and the gradient of described cylindrical shell is 6%-8%, is provided with down hydraucone at cylindrical shell from discharge port a distance, and the front of falling the hydraucone is provided with material delivering plate.
2. rotary kiln is used in titanium dioxide calcining as claimed in claim 1, it is characterized in that: described hydraucone is arranged on from barrel discharge hole 3.5m-5.5m place.
3. rotary kiln is used in titanium dioxide calcining as claimed in claim 1 or 2, it is characterized in that: described hydraucone comprises contraction mouth, trunnion section and enlarges mouth.
4. titanium dioxide as claimed in claim 3 is calcined and is used rotary kiln, it is characterized in that: the inclination angle of falling between bell-mouthed contraction mouth and tubular axis is 10 °-15 °, horizontal length is 2m-3m, and the length of trunnion is 200mm-600mm, and the inclination angle that enlarges between mouth and tubular axis is 15 °-25 °.
5. rotary kiln is used in titanium dioxide calcining as claimed in claim 1, and it is characterized in that: the hydraucone that falls can adopt the special refractories of the anti-etch of antistripping, also can adopt the high-alumina refractory brick.
6. rotary kiln is used in titanium dioxide calcining as claimed in claim 1, and it is characterized in that: described material delivering plate is along drum shaft to even setting.
7. rotary kiln is used in titanium dioxide calcining as claimed in claim 6, it is characterized in that: the material delivering plate along drum shaft to even setting, the 4-8 bar can be set, and every size is identical, and length is 1.5m-2.5m, height 80mm-150mm, width is 80mm-160mm.
8. use rotary kiln as the titanium dioxide calcining of any one in claim 4-7, it is characterized in that: the rotating speed of rotary kiln is 1-3 minute/circle.
9. rotary kiln is used in titanium dioxide calcining as claimed in claim 1, and it is characterized in that: described rotary kiln also comprises combustion chamber and kiln hood.
10. rotary kiln is used in titanium dioxide calcining as claimed in claim 1, and it is characterized in that: described cylindrical shell is supported by three groups of tugboats, the sealing of cylindrical shell two ends employing diaphragm seal, and diaphragm seal is fish scale-shaped and arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096495 CN203269600U (en) | 2013-03-04 | 2013-03-04 | Rotary kiln for calcining titanium dioxide with sulfuric acid method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320096495 CN203269600U (en) | 2013-03-04 | 2013-03-04 | Rotary kiln for calcining titanium dioxide with sulfuric acid method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203269600U true CN203269600U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320096495 Expired - Fee Related CN203269600U (en) | 2013-03-04 | 2013-03-04 | Rotary kiln for calcining titanium dioxide with sulfuric acid method |
Country Status (1)
| Country | Link |
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| CN (1) | CN203269600U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183381A (en) * | 2013-03-04 | 2013-07-03 | 广西金茂钛业有限公司 | Rotary kiln for calcining titanium dioxide by sulfuric acid method |
-
2013
- 2013-03-04 CN CN 201320096495 patent/CN203269600U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103183381A (en) * | 2013-03-04 | 2013-07-03 | 广西金茂钛业有限公司 | Rotary kiln for calcining titanium dioxide by sulfuric acid method |
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Legal Events
| 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: 20131106 Termination date: 20150304 |
|
| EXPY | Termination of patent right or utility model |