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Grate - the rotary pellet production process has the adaptability of raw materials , large - scale production , high strength pellets , uniform quality , low energy consumption and production costs , coal-fired grate - Swing kiln pellet production technology in recent years, China has been the promotion of a wider range of applications . The process system design and equipment of the national production only began in recent years , the pellet production system , arranged from system design, process equipment selection , there are many issues that need to improve , especially the production of pellets for thermal processes need to further optimize the design and optimization of the operation . The group mines for the steel ball chain grate - kiln pellet production process , material balance and heat balance calculations in accordance with the process of the production system divided by 9 section . Mathematical calculations using Excel software , the heat balance of the nine sections calculated parameters are interrelated , so that thermal equilibrium into an organic whole . System-wide material balance and thermal balance , not only objectively describe Grate - the rotary pellet production systems complex material flow and energy flow flow to reasonably reflect the various sections and system-wide energy consumption . Plant chain grate - kiln system is the existence of a series of questions , the heat balance calculations, on the the Grate - system and the operation of the rotary kiln system thermal processes conducted in-depth analysis , several key of improvements : (1 ) single-channel coal gun rotary kiln heating system , the abolition of cold combustion , can effectively improve the overall direction along the length of the kiln mean radiant temperature and pressure , increase production, reduce the ring formation , reduce coal consumption . (2) on the the annular cooler system analysis , a new air supply system , the new air supply system to strengthen the the ring cold period of heat exchange and re-optimize the ring cold paragraphs hot air distribution , so that the greatest degree waste heat recovery . (3) for the actual condition of the plant , according to the analysis conclusions set of effective Grate - rotary pellet production system thermal system adjustment programs , equipment operating parameters and thermal system has been further optimized .
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