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根据此发明,是应用于硫化矿氧化焙烧产生的烟气,但此方法也适用于处理其他形式的含汞烟气,一般来看,多数的硫化矿的汞含量变化于百万分之几到百万分之几十之间,特别是铝锌硫化矿的汞含量于百万分之几十到百万分之几百之间。也有一些物料含汞量相当高,对于这些物料,也可适用于所述的方法。加热处理含汞物料的过程中,汞化合物分解,汞被带入气相里,例如:在焙烧或熔炼硫化精矿时,此时温度在600～1500℃之间,精矿中所含的HgS分解成汞蒸汽。
According to this invention, it is applied to the flue gas produced by the oxidation roasting of sulphide ore. However, this method is also suitable for treating other forms of mercury-containing flue gas. Generally speaking, the mercury content of most sulphide mines varies from a few parts per million Mercury levels in the tens of millions of parts per million, especially aluminum zinc sulfide ores in the tens of millions of parts per million. There are also some materials containing very high levels of mercury, for these materials can also be applied to the method. During the heat treatment of the mercury-containing material, the mercury compounds are decomposed and the mercury is entrained into the gas phase. For example, when calcining or smelting the sulfide concentrate, the temperature is between 600 and 1500 ° C, and the HgS contained in the concentrate is decomposed Mercury into steam.