钍矿石选矿在线测量系统构建  

The Development of on-Line Measuring System for Thorium Ore Beneficiation

作　　者：罗琼 王广西 赖万昌 毛鑫 石希瑜 叶磊 LUO Qiong;WANG Guang-xi;LAI Wan-chang;MAO Xin;SHI Xi-yu;YE Lei(Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province,Chengdu University of Technology, Chengdu 610059, China)

机构地区：[1]地学核技术四川省重点实验室成都理工大学

出　　处：《核电子学与探测技术》2019年第1期37-42,共6页Nuclear Electronics & Detection Technology

基　　金：高分辨率航空伽马能谱探测方法技术研究与软件开发(2017YFC0602105)资助

摘　　要：介绍了一种由阵列式数字化γ辐射探头组成的铉矿石选矿在线测量系统。探测器采用NaI(T1)晶体,通过脉冲放大、滤波成形和单道脉冲幅度甄别等电路输出数字矩形脉冲,构成单路数字化γ辐射探头。牡矿石依次经过十路探头,探头产生的脉冲计数和作为矿石筛选依据,由FPGA实现十路计数器、求取计数和以及与上位机串行通信,上位机软件采用Python语言编写,具有实时显示铉矿石含量、异常报警、参数调整和输岀保存等功能。经测试,系统运行稳定可靠,可满足实际工作需要。This paper introduces an on-line measuring system for ore beneficiation composed of arrayed gamma radiation probes. The detector uses a φ50 mm× 100 mm Nal ( T1) crystal and outputs a digital rectangular pulse through a circuit such as pulse amplification, filter shaping, and single-pass pulse amplitude discrimination to form a single digital gamma radiation probe. After the thorium ore passes through 10 probes, the number of digital pulses generated by each probe is counted and used as the basis for the cesium ore screening. Based on FPGA to achieve 10 counters, to obtain the count and serial communication with the PC, the PC software developed using Python language, with real-time display of germanium ore content, data anomaly alarm, adjustment of the parameters and data storage, etc. After testing, the system is stable and reliable and this design meets the actual work requirements.

关 键 词：钍矿石选矿 在线测量 数字化探头 多路计数器:Python 

分 类 号：TL99[核科学技术—核技术及应用]