就炼铁高炉矿槽除尘系统的方式，提出了一些革新的措施，涉及到阀门、吸气罩、风幕及控制方法等。

The paper presents the innovation measures of dedust in ore channel of iron making plant in terms of valves, exhaust hood, air curtain and control method etc.

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正确选定顶吸罩类型是邢钢转炉二次除尘改造治理的关键。

Appropriate choice of top draft hood type is a key point for the modification project of secondary dedusting of converter off-gas at Xingtai Steelmaking Plant.

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分析了热浮力罩式除尘系统的影响因素，提出了改进措施，并对两种除尘系统存在的问题进行了讨论。

The influencing factors of dedusting system of draft hood is analyzed, the measure for improvement is given, and also the existing problems in two dedusting systems is discussed.

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