Abstract: To reduce heat loss and save cost, a combination decision model of reverb aluminum holding furnace linings in aluminum casting industry was established based on economic thickness method, and was resolved using simulated annealing. Meanwhile, a three-dimensional mathematical model of aluminum holding furnace linings was developed and integrated with user-defined heat load distribution regime model. The optimal combination was as follows: sidewallwith 80mmalumino-silicate fiber felts, 232mmdiatomite brick and 116mmchamotte brick; top wall with 50 mm clay castables, 110 mm alumino-silicate fiber felts and 200 mm refractory concrete; and bottomwallwith 232mmhigh-alumina brick, 60mmclay castables and 68mmdiatomite brick. Lining temperature from high to low was successively bottom wall, side wall, and top wall. Lining temperature gradient in increasing order ofmagnitude was refractory layer and insulation layer. It was indicated that the results of combination optimization of aluminum holding furnace linings were valid and feasible, and its thermo-physical mechanism and cost characteristics were reasonably revealed.

Key words: Aluminum holding furnace linings, Reaction engineering, Transport processes, Numerical simulation, Combination optimization, Simulated annealing

摘要： To reduce heat loss and save cost, a combination decision model of reverb aluminum holding furnace linings in aluminum casting industry was established based on economic thickness method, and was resolved using simulated annealing. Meanwhile, a three-dimensional mathematical model of aluminum holding furnace linings was developed and integrated with user-defined heat load distribution regime model. The optimal combination was as follows: sidewallwith 80mmalumino-silicate fiber felts, 232mmdiatomite brick and 116mmchamotte brick; top wall with 50 mm clay castables, 110 mm alumino-silicate fiber felts and 200 mm refractory concrete; and bottomwallwith 232mmhigh-alumina brick, 60mmclay castables and 68mmdiatomite brick. Lining temperature from high to low was successively bottom wall, side wall, and top wall. Lining temperature gradient in increasing order ofmagnitude was refractory layer and insulation layer. It was indicated that the results of combination optimization of aluminum holding furnace linings were valid and feasible, and its thermo-physical mechanism and cost characteristics were reasonably revealed.

关键词: Aluminum holding furnace linings, Reaction engineering, Transport processes, Numerical simulation, Combination optimization, Simulated annealing