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一、前言目前国内许多中小型铝合金加工厂,都是采用传统的以辐射传热为主的矩形火焰反射炉,直接燃用未经筛分的原煤和人工间断加煤,层状燃烧。我们认为这样的炉型和热工操作,存在着很多缺点:(1)单位煤耗高、热效率低;(2)生产效率低;(3)金属氧化烧损大;(4)合金元素易偏析;(5)劳动强度大,工作条件差;(6)大气污染严重。八一年,马鞍山钢铁学院与南京钢管厂共同研制了一座半吨容量的新型煤气铝合金熔炼炉,并于年底投入试产。现已运行了十多个月。与半连续铸锭配套的这条熔铸生产线,除满
I. INTRODUCTION At present, many small and medium-sized aluminum alloy processing factories in our country use the traditional rectangular flame reverberation furnace mainly based on radiant heat transfer, direct burning without sieving raw coal and artificial intermittent addition of coal and stratified combustion. We think there are many shortcomings in such furnace and thermal operation: (1) high unit coal consumption and low thermal efficiency; (2) low production efficiency; (3) large metal oxidation loss; (4) (5) labor intensity, poor working conditions; (6) serious air pollution. In 1981, Maanshan Iron and Steel Institute and Nanjing Steel Pipe Plant jointly developed a new half-ton capacity gas-fired aluminum alloy smelting furnace and put it into trial production by the end of the year. Has been running for more than 10 months. With the semi-continuous casting supporting this casting line, in addition to full