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The purpose of this project is to control the pollution of dust,which occurred in a typical lead-zinc mine.Two kinds of surfactants and water glass were chosen as the wetting agents to study the behaviours of suppressing the dust.The performances of the wetting agents of various sizes and water content of dust and their compositions among different weting agents were investigated. Firstly,the chemical compounds,dispersity,water content,bulk density and other relevant physico-chemical properties of the choiced dust of lead-zinc ore were mensurated.A great number of down-ward penetrating tests were conducted to different partical sizes of dust and to analyze the dust wetting behaviour respectively.The optimal compositions of wetting agents were obtained in accordance with different water contents and partical sizes of the dust after analyzing and statisting the achieved experimental data. The data show that the efficiency of chemical dust suppression of weting agents is much better than that of water.The results of the research work prove that the partical size and the water content of the dust are very important factors to the dust suppression.The results are also proved validly by the dropping experiment,which takes the penetrating diameter and penetrating time as the major factors.The superfine dust is much more difficult to be wetted.Since increasing the water content of dust is the best approach to control it,the choice of wetting agents for improving dispensation is significant. 相似文献
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The coincidence of relevant factors, e.g. oxygen absorption quantity, weight increment, water soluble iron ions and sulfate ion of sulfide ore samples in the oxidation process, was tested through experiment. Based on a large number of tests for a group sample of sulfide ores from a mine, some important conclusions were obtained. The results obtained by the investigation indicate that there is no general interpretation relative to the oxygen absorption and the formation products of sulfate ion and water soluble iron ions during the oxidation process of sulfide ores at ambient temperature. However, the weight increment of the sulfide ore samples in the oxidation process at ambient temperature has a linear relationship with the auantitv of oxvaen absorption. 相似文献
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阴离子型湿润剂与硫化矿尘的耦合性实验 总被引:3,自引:0,他引:3
为了研究粉尘与湿润剂的耦合性,采用毛细管正向渗透实验方法,研究了3种阴离子型湿润剂溶液的含量(质量分数)、温度、湿润液添加钠盐等因子对10种硫化矿尘湿润效果的影响.实验结果表明:1)当温度为20℃左右时,对部分硫化矿尘,湿润剂含量越高,湿润效果越差;2)矿尘的氧化性强弱对湿润剂的效果没有明显的影响;3)湿润剂溶液添加钠盐后能提高其湿润硫化矿尘的效果,使湿润剂的成本有所降低;4)溶液的湿润效果与温度有显著关系,温度为20℃左右,湿润剂对有些硫化矿尘不仅没有改善湿润效果,反而起了负作用,温度为20~35℃,湿润效果随温度升高而增大,温度从35℃增加到55℃,湿润效果没有变化,继续增加溶液的温度,湿润效果反而降低. 相似文献
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介绍了一种粉尘湿润剂的性能测定方法。该方法是将一定质量的粉尘分散在制备好的湿润剂溶液中并搅匀,经过短时间的沉淀后,采用高精度激光粒度分析仪,测定悬浮在溶液中的粉尘粒径和分散度。结果表明:悬浮在溶液中的粉尘颗粒大小和分散度随着溶液中的湿润剂类型、湿润剂质量浓度和沉淀时间的不同而变化。因此,应用高精度激光粒度分析仪可以间接地研究粉尘湿润剂的性能,从而达到开发新的粉尘湿润剂的目的。以湖南某铅锌矿矿尘为研究对象,对粒径小于20μm的微尘进行实验,证明了该测定方法的可行性,并获得一组抑制铅锌矿矿尘的湿润剂配方。 相似文献
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