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Silica collection concerns when using flooded-bed scrubbers

机译：使用溢流床洗涤塔时二氧化硅收集的问题

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Laboratory tests were conducted to evaluate the silica collection efficiency of flooded-bed scrubbers using six different filter panel designs at two operating velocities. Test results indicated that reductions in filter density negatively impacted respirable dust collection. Silica collection efficiency for the least-dense filter was as much as 33 % lower than the collection efficiency of the most- dense filter. At the low operating velocity, the least-dense filter allowed more than 40% of the respirable silica dust in the scrubber intake air to pass through the unit and back ill to the mine environment. Operation of the scrubber at the higher test air velocity increased silica collection efficiency regardless of the filter panel tested. The density of the filter panels also impacted the quantity of air moved through the scrubber with higher-density filters reducing scrubber airflow. For each filter, the relationship between dust-collection efficiency and air-moving capacity must be considered to determine the overall effectiveness for each mine application.
机译：进行了实验室测试，以两种工作速度使用六种不同的滤板设计来评估溢流床洗涤器的二氧化硅收集效率。测试结果表明，过滤器密度的降低对可吸入灰尘的收集产生了负面影响。密度最低的过滤器的硅胶收集效率比密度最高的过滤器的硅胶收集效率低33％。在低运行速度下，密度最小的过滤器可使洗涤器进气中40％以上的可吸入二氧化硅粉尘通过装置并重返矿山环境。不论测试的滤板是什么，洗涤器在较高的测试风速下运行均可提高二氧化硅的收集效率。滤板的密度也影响了通过洗涤器的空气量，而高密度的过滤器减少了洗涤器的气流。对于每个过滤器，必须考虑集尘效率和通气能力之间的关系，以确定每种矿山应用的总体效率。

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