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 suppress...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.展开更多
复合材料电杆作为一种新型的输电线路电杆,因其具有绝缘性能强、耐腐蚀性好和质量轻等优点,应用于我国配电网线路可以有效提高线路绝缘性能,降低雷击跳闸率,提升线路整体技术经济性。以6 k V复合材料电杆的耐雷性能为研究对象,基于ATP-E...复合材料电杆作为一种新型的输电线路电杆,因其具有绝缘性能强、耐腐蚀性好和质量轻等优点,应用于我国配电网线路可以有效提高线路绝缘性能,降低雷击跳闸率,提升线路整体技术经济性。以6 k V复合材料电杆的耐雷性能为研究对象,基于ATP-EMTP仿真分析平台,深入分析了复合材料电杆塔头的结构参数与分段接地方式对线路耐雷性能的影响,提出了较优的塔头结构和防雷接地方案。以某工程线路为例,塔头尺寸较优化前减小40%,优化后的接地方法较全线逐塔接地减少安装3/5的接地引下线,同时满足防雷考核指标,技术和经济性均有较大的提升。展开更多
基金Project(50474050)supported by the National Natural Science Foundation of ChinaProject(20040533011)supported by the Doctorate Program Fund of Ministry of Education,China
文摘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.
文摘复合材料电杆作为一种新型的输电线路电杆,因其具有绝缘性能强、耐腐蚀性好和质量轻等优点,应用于我国配电网线路可以有效提高线路绝缘性能,降低雷击跳闸率,提升线路整体技术经济性。以6 k V复合材料电杆的耐雷性能为研究对象,基于ATP-EMTP仿真分析平台,深入分析了复合材料电杆塔头的结构参数与分段接地方式对线路耐雷性能的影响,提出了较优的塔头结构和防雷接地方案。以某工程线路为例,塔头尺寸较优化前减小40%,优化后的接地方法较全线逐塔接地减少安装3/5的接地引下线,同时满足防雷考核指标,技术和经济性均有较大的提升。
