Journal ArticleDOI
Flow of materials in rotary kilns used for sponge iron manufacture: Part II. Effect of kiln geometry
TLDR
In this article, the authors identify the basic features of burden movement in a rotary kiln and determine the influence of length to diameter ratio (L/D) on the filling degree, hold-up, and residence time of the charge.Abstract:
The present work identifies the basic features of burden movement in a rotary kiln The cold model study was conducted with iron ore as the feed material to determine the influence of length to diameter ratio (L/D) of a rotary kiln on the filling degree, hold-up, and residence time of the charge An empirical equation correlating different operating variables has been derived on the basis of the experimental results The influence of individual parameters under different conditions on the residence time and back spillage has also been evaluatedread more
Citations
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Journal ArticleDOI
Mean residence time and hold-up of solids in rotary kilns
TL;DR: In this paper, a 400 mm ID pilot kiln with a cylindrical discharge dam was used to test the influence of operational variables on the mean residence time (MRT) and hold-up of the solids in rotary kilns.
Journal ArticleDOI
Residence time distribution and material flow studies in a rotary kiln
TL;DR: In this article, a rotary kiln containing ilmenite particles was used to study the residence time distribution of low-density particles, holdup, and bed depth profile.
Journal ArticleDOI
Experimental study of residence time, particle movement and bed depth profile in rotary kilns
TL;DR: In this article, Kramers et Croockewit (1952) and Ronco et Ronco (1965) proposed an equation for the distribution of the time of day and the profil de profondeur du lit.
Journal ArticleDOI
The Transient Response of Granular Flows in an Inclined Rotating Cylinder
TL;DR: In this paper, the results of an experimental and theoretical study to investigate the transient response of granular flow through a laboratory scale inclined rotating cylinder to large step changes in one of three variables: (i) mass feed rate, (ii) rotation speed or (iii) axis inclination.
Journal ArticleDOI
Wood chips flow in a rotary kiln: Experiments and modeling
TL;DR: In this paper, the authors used the Saeman model to predict the mean residence time (MRT) and the bed depth profile of powder materials in rotary kilns, which is well suited for processing woody biomass by torrefaction to produce bioenergy.
References
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Journal ArticleDOI
Flow of materials in rotary kilns used for sponge iron manufacture: Part I. Effect of some operational variables
TL;DR: In this article, a rotary kiln-based direct reduction pilot plant for sponge iron production in India is investigated. But the work was divided into two parts: first, a study of the influence of several operating parameters, i.e., rotational speed, inclination of the kiln, effect of circular dams at the feed and the exit ends of the Kiln, etc., and second, an investigation of the extent of segregation of a mixture of solids in a rotating kiln.
Journal ArticleDOI
Time for passage of material through rotary kilns
TL;DR: In this paper, an expression for the passage of material through rotating cylindrical kilns or driers, relating the time of passage to the other important variables, such as slope, length, diameter, and rate of rotation of the kiln, feed rate and rill angle of the material.