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为了有效地收回有色冶金工厂中的细微烟尘,通常使用布袋收尘器或电气收尘器。在铅锌工业、锌工业和再生铜冶煉厂中,由于产生的灰尘,如氧化锌、氧化铅等,大都缺乏导电性、粒度多在1N以下,并且耍避免潮湿,因此,布袋收尘器将要比电气收尘器更为适宜一些。虽然在100年以前已采用了布袋过滤方法,但在目前,它仍不失为一种具有高效率的除尘设备。在未述及使用方法以前,有必要对于布袋的性质和要求,加以概括地介绍。滤布的性质及其使用要求总的来说,滤布应该具有较高的耐热性、耐酸性、机械强度和收尘收率,此外阻力应低,滤布上面的灰尘容易除掉,最好是浚有接缝的。苏联从1949年起,已经开始生产无缝袋,所用材料除纯羊毛外,还掺有30～35％的卡玻隆。每1平方公尺滤布的重量,与所用纎维的数量成正比例,因而与其机械性能和过滤性质有关。从实际资料中可知:每1平方公尺滤布的重量,应接近500克,纎维不但要细,而且应分布均匀。布袋的直径与长度
In order to effectively recover fine fumes from non-ferrous metallurgical plants, bag-type dust collectors or electric precipitators are often used. In lead-zinc industry, zinc industry and regenerated copper smelter, most of the dust generated, such as zinc oxide, lead oxide, etc., lacks conductivity and the particle size is mostly below 1N, and moisture is to be avoided. Therefore, the bag dust collector will More suitable than the electric precipitator. Although the bag filtration method was adopted 100 years ago, it is still an efficient dust removal device at present. Before describing the method of use, it is necessary to give a general introduction to the nature and requirements of the bag. The nature of the filter cloth and its use requirements In general, the filter cloth should have high heat resistance, acid resistance, mechanical strength and dust collection yield, in addition to resistance should be low, the dust on the filter cloth easily removed, the most It is good junjun seam. Since 1949, the Soviet Union has started to produce seamless bags, which contain 30-35% carboron in addition to pure wool. The weight of a filter cloth per square meter is directly proportional to the number of dimensions used and is therefore related to its mechanical properties and filtration properties. From the actual data we can see: the weight per 1 square meter filter cloth should be close to 500 grams, 纎 dimensional not only fine, but should be evenly distributed. Bag diameter and length