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燃炉是谷物干燥机的心脏，国外基本采用柴油或天然气做燃料供热。根据国情要求改用无烟煤或褐煤做燃料。本文采取烧煤加空气做供热系统，取得富有成效的基本经验。
Burner is the heart of grain dryer, the basic foreign use of diesel or natural gas for heating. According to the national conditions require the use of anthracite or lignite as fuel. In this paper, coal and air heating system, made fruitful basic experience.