Analysis of calcination parameters and the temperature profile in an annular shaft kiln. Part 1: Theoretical survey
Senegačnik, Andrej (Author), Oman, Janez (Author), Širok, Brane (Author)

URLURL - Presentation file, Visit http://dx.doi.org/10.1016/applthermaleng.2006.10.001 This link opens in a new window

In article certain specific problems associated with heat transfer, which occurs during the process of lime burning are discussed. An increase in the thickness of the calcinated layer affect the conditions of heat inflow into the sphere. The equilibrium calcination radius is defined, which delimits the calcination process into two zonesČ one in which the supply of heat to the reaction front limits the heat transfer from kiln gases to the stones, and another, which is limited by heat conduction through the already calcinated layer. The phenomenon of the critical sphere radius is also discussed. From the viewpoint of increasing the capacity of existing annular shaft kilns, it turns out that it is a advantageous to increase the heat transfer coefficient from kiln gases to the stones up to the value of 60 W/(m2 K) in the incipient part of the calcination.

Keywords:žganje apna, kalciniranje, prenos toplote, toplotna odpornost, računski modeli, analize parametrov, lime burning, calcination, calcination radius, heat transfer
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Number of pages:str. 1467-1472
Numbering:Letn. 27, št. 8/9
ISSN on article:1359-4311
COBISS.SI-ID:9747995 Link is opened in a new window
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Record is a part of a journal

Title:Applied Thermal Engineering
Shortened title:Appl. therm. eng.
Publisher:Elsevier Science
COBISS.SI-ID:1861910 This link opens in a new window

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