瞬发伽马中子活化分析技术在重介分选智能控制中的研究与应用  

Study and application of the PGNAA technology in intelligent controlof heavy medium coal separation process

作　　者：梁椿豪 赵洪涛 宋青锋 连春宇 LIANG Chunhao;ZHAO Hongtao;SONG Qingfeng;LIAN Chunyu(Huajin Coking Coal Co.Ltd.,Shanxi Coking Coal Group,Lyuliang 033000,China;Dandong Dongfang Measurement and Control Technology Co.Ltd.,Dandong 118000,China)

机构地区：[1]山西焦煤集团华晋焦煤有限责任公司,山西吕梁033000 [2]丹东东方测控技术股份有限公司,辽宁丹东118000

出　　处：《选煤技术》2021年第3期91-94,共4页Coal Preparation Technology

基　　金：辽宁省科技重大专项计划资助项目(2020JH1/10100009)。

摘　　要：精准可靠的煤质在线检测是稳定商品煤质量、提高精煤产率、实现煤炭分选智能控制的关键一环。为实现重介精煤灰分的在线检测,设计了一套基于瞬发伽马中子活化分析(PGNAA)技术的煤质在线检测系统。测试结果表明:将该系统用于重介块精煤灰分测量的动态标准差可达到0.105%;与人工控制系统相比,基于PGNAA技术的重介分选智能控制系统将重介精煤灰分的动态标准差降低了0.18个百分点,精煤产率提升了0.95个百分点。Accurate and reliable online monitoring of coal quality is a crucial link in maintaining consistency of saleable coal product,increase of yield of clean coal and effecting intelligent control of coal washing process.In order to realize online monitoring of ash of products of heavy medium separation system,an online ash monitoring system based on the principle of prompt gamma neutron activation analysis(PGNAA)is developed.As evidenced by the test result,for monitoring the ash of the product of coarse coal heavy medium washing system,the dynamic standard deviation of the system is as low as 0.105%which is 0.18 percentage point lower than the figure obtained through manual control method.In addition,the yield of clean coal is seen to rise by 0.95 percentage point.

关 键 词：灰分在线检测 重介分选智能控制 瞬发伽马中子活化分析 动态标准差 

分 类 号：TD948.9[矿业工程—选矿]