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发明授权
CN101660041B 一种用钼渣制造MgO酸性球团的方法 失效 - 权利终止

一种用钼渣制造MgO酸性球团的方法
摘要：
本发明公开了一种用钼渣制造MgO酸性球团的方法，它是由以下重量份数的配矿组成：钼渣60～70份，磁精粉30～40份，粘结剂0.5～2份，混合均匀后，在圆盘造球机上造球，焙烧工艺为：在380～420℃的温度条件下干燥10～15分钟，然后在880～920℃的温度条件下预热10～15分钟，在1120～1200℃的温度条件下焙烧15～20分钟，在1100～1200℃的温度条件下保温10～15分钟，通风冷却到800～850℃后，自然冷却至室温。本发明生产出来的成品球的铁品位60％以上，MgO含量可达到2.0％±0.1％，还原膨胀指数RSI＜15％，使这种成品球成为高炉炼铁的优质酸性炉料。
摘要（英）：

The invention discloses a method for manufacturing MgO acid pellets by using molybdenum slag. The MgO acid pellets contain the following proportioning ores in portion by weight: 60-70 portions of molybdenum slag, 30-40 portions of magnetic refine powder and 0.5-2 portion of binding agent. The proportioning ores are evenly mixed and palletized on a pelletising disc. A sintering process comprises the following steps: drying the proportioning ores for 10-15 minutes at a temperature of between 380 DEG C and 420 DEG C, then preheating for 10-15 minutes at a temperature of between 880 DFEG C and 920 DEG C, baking for 15-20 minutes at a temperature of between 1,120 DEG C and 1,200 DEG C, keeping temperature for 10-15 minutes at a temperature of between 1,100 DEG C and 1,200 DEG C, ventilating and cooling to 800-850 DEG C and naturally cooling to room temperature. The produced finished pellets have over 60 percent of iron content, 2.0 percent plus or minus 0.1 percent of MgO content and the reduction expansion index less than 15 percent, thereby the finished pellets are excellent acid burden material for a blast furnace to make iron.

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