文档介绍：Model of Mass and Energy Transfer in a Clinker Rotary
Kiln
. Guirao
S. Iglesias
Numerical Analysis TEChnologies .
J. Pistono
Universidad de Oviedo
R. Vázquez
IMASA Div. Internacional

Abstract
The purpose of this report is the development of an application allowing the precise simulation of the
processes which are involved in the operation of a rotary cement kiln, either wet or dry. This will be in use
during cement production in existing kilns and in the design stage of new kilns, including other processes,
such as preheating and precalcining. The length of the furnace is divided into as many sections as desired,
the last face of the first section being equal to the first face of the second section, and so on. In each section
it is considered: (1) heat transfer by conduction, convection and radiation (2) chemical reactions, including
vaporization of the water content in the wet process (3) entrance and exit of flows of each chemical
specimen. Every physical property and transfer depends on local (point) conditions. The results are
complete maps of temperature position together with their variations during stages of kiln feeding
and fuelling.
Introduction
The development of an application allowing the strict simulation of the processes taking place in a rotary
kiln for clinker production will be an important advance in the design procedures for this equipment.
The project initial objectives are summarized as follows:
• To build a design tool: development of an application capable of predicting all the variables,
chemical as well as thermo-physical in plete kiln length. Traditionally, the design of rotary
kilns is mainly supported on the knowledge derived from previous constructive experience. A tool
such as that hereby proposed will constitute the technical basis for decision taking concerning
design, such as length to be assigned to each stretch, chain mass, etc.
• To build a supporting