露天矿潜孔钻机泡沫除尘发泡剂配方的实验研究

发布时间：2018-04-01 13:09

本文选题：露天矿　切入点：潜孔钻机　出处：《煤炭学报》2015年S2期

【摘要】：为了解决露天矿潜孔钻机粉尘浓度严重超标的问题,改善干式捕尘器、湿式凿岩除尘效率低、应用效果差的现状,采用改进ROSS-Miles法进行发泡剂性能评价实验,研制出一种发泡性能好且适用于露天矿潜孔钻机泡沫除尘的发泡剂配方。通过单一发泡剂实验,分别以液流停止后0和5 min时的泡沫体积表示发泡剂的发泡能力和泡沫稳定性,优选出发泡性能优良的3种发泡剂进行两两复配,同时加入稳泡剂及无机盐,以增强发泡剂的稳泡效果及发泡能力,最终确定了发泡剂的最佳配方为:C(A)=0.5%,C(B)=1.0%,C(G)=0.3%,C(NaCl)=0.5×10~4mg/L。通过工业性试验发现,使用泡沫除尘后采场空间粉尘浓度大幅度降低,平均降尘率高达90%以上。
[Abstract]:In order to solve the problem of serious excess of dust concentration of downhole drilling rig in opencast mine, improve dry dust trap, low efficiency of wet drilling and dust removal, and poor application effect, an improved ROSS-Miles method was used to evaluate the performance of foaming agent. A foaming agent formula was developed for foaming agent with good foaming performance and suitable for foam dust removal of submerged drilling rig in opencast mine. Through single foaming agent experiment, the foaming ability and foam stability of foaming agent were expressed by foam volume at 0 and 5 min after liquid flow stopped, respectively. Three kinds of foaming agents with excellent foaming properties were selected to be mixed together with foaming stabilizers and inorganic salts. In order to enhance the foaming effect and foaming ability of foaming agents, the best formulation of foaming agents was determined as follows: 1. 0. 3CCNaCl1 = 0. 5 脳 10 ~ (4) mg 路L ~ (-1). Through industrial experiments, it was found that the best foaming agent was 0.5 脳 10 ~ (4) mg 路L ~ (-1) of foaming agent, and the optimum formulation of foaming agent was 0.5 脳 10 ~ (4) mg 路L ~ (-1) 路L ~ (-1). The dust concentration in stope space is decreased greatly after foam dust removal, and the average dust fall rate is more than 90%.
【作者单位】：北京科技大学教育部金属矿山高效开采与安全重点实验室;
【基金】：国家自然科学基金资助项目(51274024) 中央高校基本科研业务费专项资金资助项目(FRF-TP-15-038A2) 中国博士后科学基金资助项目(2014M560891)
【分类号】：TD714.4

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