强激光与粒子束2017，Vol.29Issue(6)：56-62,7.DOI:10.11884/HPLPB201729.170048
利用脉冲功率技术开采海底富钴结壳的试验研究
Experimental investigation of exploring marine co-rich crust using pulse power techniques
摘要
Abstract
In order to overcome the disadvantages of using the conventional mechanical methods to explore marine Co-rich crust,such as crushing head wearing easily,low efficiency and high dilution ratio,we developed a new technology using experimental investigation,in which the pulse power techniques were used to explore the marine Co-rich crust.A power source was designed using solid-state Marx circuits together with semiconductor switch IGBT,which could generate negative high voltage pulses with rising edge 100 ns and maximum amplitude 40 kV.The breaking way adopted needle-needle electrodes which contact the same surface of rocks closely.To improve the potential of areas where the needles contact with the surface of rocks,stainless pins were used as the electrodes.Results indicate that plasma channels were generated and sandstones were broken when the amplitude of high voltage pulse was 32.5 kV and the distance between electrodes was 3 mm.Moreover,discharges happen either during the rising-time or after the rising-time of high voltage pulses.The changing curves of voltage and current show the plasma channels have variable impedance during discharge processes.关键词
脉冲功率技术/深海/富钴结壳/砂岩/放电Key words
pulse power techniques/marine/Co-rich crust/sandstone/discharge分类
矿业与冶金引用本文复制引用
张瑞强,刘少军,胡琼..利用脉冲功率技术开采海底富钴结壳的试验研究[J].强激光与粒子束,2017,29(6):56-62,7.基金项目
深圳市科技计划项目(JCYJ20140506150310437) （JCYJ20140506150310437）
中南大学研究生创新项目(2016zzts298) （2016zzts298）
