基于Marx发生器的新型高压电脉冲破碎设备研制及应用

金属矿山 ›› 2020, Vol. 49 ›› Issue (07): 170-177.

基于Marx发生器的新型高压电脉冲破碎设备研制及应用

秦永红，张宁豫，高鹏，李宏达，陈洪运

1. 东北大学资源与土木工程学院，辽宁沈阳 110819；2. 难采选铁矿资源高效开发利用技术国家地方联合工程研究中心，辽宁沈阳 110819；3. 沈阳理工大学装备工程学院，辽宁沈阳 110168

出版日期:2020-07-15 发布日期:2020-08-21
基金资助:
国家自然科学基金项目（编号：51974063），中央高校基本科研业务专项（编号：N180104016），中国博士后科学基金资助项目（编号：2020M670783）

Development and Application of New Type High-voltage Pulse Breakage Equipment Based on Marx Generator

Qin Yonghong，Zhang Ningyu，Gao Peng，Li Hongda，Chen Hongyun

1. School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China; 2. National-local Joint Engineering Research Center of High-efficient Exploitation Technology for Refractory Iron Ore Resources, Shenyang 110819, China; 3. College of Equipment Engineering, Shenyang Ligong University, Shenyang 110168, China

Online:2020-07-15 Published:2020-08-21

摘要/Abstract

摘要： 针对传统矿石粉碎设备产品解离不充分、粒度分布不均匀等问题，研制了一种基于Marx发生器的高压电脉冲破碎设备，并对典型的鞍山式磁铁石英岩进行相应的破碎研究，以期实现矿物的高效解离、预富集和预弱化。高压电脉冲破碎设备由初级充电电源、Marx发生器、气体开关和新型针-板式电极对组成。高压脉冲放电破碎试验表明：最佳的试验参数分别为球隙间距25 mm和输入电压70 V；增加脉冲个数有利于强化破碎效果，相较于机械破碎，电脉冲破碎产物的细粒级中TFe含量显著提升，当脉冲个数为300时，电脉冲破碎产物中-0.074 mm粒级TFe含量较机械破碎提高了9.14%。高压电脉冲有助于铁在细粒级预富集，并促进磁铁矿-石英连生体有效解离。

关键词: 高压脉冲放电, Marx发生器, 磁铁石英岩, 界面解离

Abstract: A new type of breakage equipment based on Marx generator was developed in view of the defects of the traditional breakage equipment such as insufficient dissociation and uneven product size distribution. In order to realize high efficiency mineral liberation, preliminary enrichment and pre-weakening, the typical Anshan magnetite quartzite was studied using the new equipment. The equipment is composed of a primary charging power supply, a Marx generator, a gas switch and a new type of needle-plate electrode equivalent. The high-voltage pulse discharge breakage experiment indicated that the optimum parameters of ball gap spacing 25 mm and input voltage 70 V, respectively. The increase in the pulse number was conducive to enhancing the breakage effect. Compared with mechanical crushing, the TFe content in the fine particle size of electrical pulse crushing products was significantly increased. With the pulses number of 300, the content of TFe in -0.074 mm particle crushing product increased by 9.14%. The high-voltage pulse breakage was helpful to the preconcentration of iron in fine particle and the effective liberation of magnetite-quartz intergrowth.

Key words: High-voltage pulse discharge, Marx generator, Magnetite quartzite, Interface dissociation

秦永红, 张宁豫, 高鹏, 李宏达, 陈洪运. 基于Marx发生器的新型高压电脉冲破碎设备研制及应用[J]. 金属矿山, 2020, 49(07): 170-177.

Qin Yonghong, Zhang Ningyu, Gao Peng, Li Hongda, Chen Hongyun. Development and Application of New Type High-voltage Pulse Breakage Equipment Based on Marx Generator[J]. Metal Mine, 2020, 49(07): 170-177.