|
| Numerical Simulation and Optimization of Ratios between Internal and External Air Volume of Alumina Rotary Kiln |
|
Received:September 10, 2015
Revised:September 15, 2015
Accepted:September 16, 2015
Published Online:January 21, 2016
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2016.02.007 |
| KeyWord:alumina rotary kiln; ratio between internal and external air volume; temperature distribution; axial velocity |
| Author | Institution |
| Yi-Zhengming |
武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室 |
| Du-bingxu |
武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室 |
| ZENG Zhuang-zhuang |
武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室 |
| XIAO Hui |
武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室 |
| Tao-qian |
武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室 |
|
| Hits: 2278 |
| Download times: 2099 |
| Abstract: |
| Pulverized coal combustion, flow, and heat transfer in Φ4.5 m×90 m alumina rotary kiln were simulated with FLUENT soft. Temperature and velocity distribution were obtained under different ratios between internal and external air volume. The results show that with ratio set to 0.6 and 0.8, temperature distribution shows better conformance. The effective length of flame can reach up to 8.6 m or above, and temperature can reach as high as 2 030 K, which accord with the requirements of clinker burning. The ratio can be adjusted within 0.6~0.8 in practice production. Axial velocity will drop with decrease of external air volume, and radial velocity will go down with the decrease of speed difference between internal and external air volume. |
| Close |