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在高能磁脉冲作用下,由于矿物组分中晶格之间的键强度减弱,在矿石中形成很多微裂隙,有利于氰化物溶液渗透到被硫化矿物、石英和其它矿物包裹的细粒浸染金粒中。由于这种难处理形式金的曝露和溶解,浸出过程中金的浸出率提高。在氰化前应用磁脉冲预处理可以改善金矿石的氰化过程。对于所研究的各种矿物原料,随着矿石的物质组成和金的赋存状态不同,金的浸出提高0.6%~9.0%。磁脉冲预处理不仅效率高,而且能耗低(0.5 kWh/t)。因此,在金矿床技术评价、新的选矿企业设计、老的提金厂选矿工艺完善可以推广应用磁脉冲预处理技术,以提高贵金属的回收率和增加矿床开发的经济效益。
Under the action of high-energy magnetic pulse, many micro-cracks are formed in the ore due to the weakening of the bond strength between the crystal lattices in the mineral component, which facilitates the infiltration of the cyanide solution into fine grained gold surrounded by sulphide minerals, quartz and other minerals In the grain. Due to this difficult-to-handle form of gold exposure and dissolution, the leaching rate of gold increases during leaching. Application of magnetic pulse pretreatment before cyanidation can improve the gold cyanide process. For all kinds of mineral raw materials studied, the leaching of gold increased by 0.6% ~ 9.0% with the different composition of the ore and the state of gold. Magnetic pulse preconditioning is not only efficient but also low in energy consumption (0.5 kWh / t). Therefore, in the technical evaluation of gold deposits, the design of new beneficiation enterprises and the improvement of beneficiation process in the old gold extraction plant, magnetic pulse pretreatment technology can be popularized to increase the recovery rate of precious metals and increase the economic benefits of ore deposit development.