高浓度比有色冶金料液痕量多金属离子浓度在线检测方法与应用验证

On-line concentration analysis and determination of trace polymetallic ion in feed solution is a significant scientific and technological problem, which seriously affects the optimal control and green production of nonferrous metallurgical process, and even becomes a bottleneck restricting the improvement of nonferrous metallurgical automation in China. Centering on the on-line concentration analysis and determination of trace polymetallic ion for nonferrous metallurgical solution with high concentration ratio, a novel on-line analysis and determination method combined polarography and spectrometry will be studied. Considering the difficulties, including easily masked detection signal of trace ions by high concentration matrix, overlapped peaks between ions with similar characteristics, easily crystallizing feed solution because of supersaturation, etc. high sensitive analytical systems of polarography and spectrometry combined with reagents optimization methods to high separation degree for reappearing masked signals will be investigated, analytical resolution method with high resolution for overlapped peaks based on high efficient calculation and characteristic points optimization will be studied. And then, information fusion methods between polarogram and spectrum and extraction methods of weak signal under strong noise will be conducted. Finally, multistage synchronous dilution sampling method and automatic sequential sample preparation method for feed solution, along with the sedimentation method of matrix, will be studied. The research will break through key technologies for the combination of polarography and spectrometry, and form systematic theories and methods for on-line concentration analysis and determination of trace polymetallic ion. On-line analyzer prototype will be developed and the methods will be verified. The achievements will lay theoretical foundation and offer technical support for the development of on-line analyzer. More importantly, it will promote the automation of nonferrous metallurgy in China. Therefore, it is of great significance for both scientific research and industrial application.

料液多金属离子浓度在线分析检测是有色冶金领域的重大科技难题，严重影响着有色冶金过程的优化运行和绿色生产，成为制约有色冶金自动化水平提升的瓶颈。本项目围绕有色冶金料液多金属离子在线分析检测难题，研究提出一种极-光谱联用的新的在线分析检测方法。针对冶金料液痕量金属离子信号极易被高浓度基体掩蔽、特性相近离子信号重叠以及过饱和料液易结晶等问题，研究面向掩蔽峰重现的极-光谱高新测试体系与高分离度试剂优化方法、基于高效计算和特征点优化的高分辨率重叠峰解析分离方法、极-光谱信息融合与高强噪声背景下微弱信号析取方法以及结合基体沉降的恒温多级自动取样和快速顺序制样方法，突破极-光谱联用的痕量多金属分析检测关键技术，研发在线分析检测样机，形成较系统的多金属离子在线检测理论与方法并实现应用验证。研究成果将为在线分析仪的研发提供理论基础和技术支撑，并将促进有色冶金自动化水平的提升，具有重要的科学意义和应用价值。

冶金料液中多重金属离子浓度是优化冶金过程工艺和控制冶金过程参数的重要依据。冶金料液成分复杂、离子浓度呈现高浓度比，杂质金属离子浓度的精确检测，是有色冶金领域的重大科技难题之一，也是制约有色冶金过程控制和绿色生产的关键瓶颈。本课题针对高浓度比有色冶金料液痕量多金属离子浓度在线检测难题，构建了高新极谱光谱测试体系和在线分析检测方法，研究了高浓度背景下光谱与极谱的掩蔽峰重现方法和多种理化性质相近金属离子的极谱光谱高分辨率重叠峰解析分离方法，提出了极-光谱信息融合与高强噪声背景下微弱信号析取方法和基体背景随机波动下的重金属离子浓度非线性校正方法等，研发了高温高浓稠料液恒温多级自动取样制样装置，研制了高精度、高可靠性的在线检测设备，形成了有色冶金过程高浓度比冶金料液痕量多金属离子浓度的在线检测应用验证方法与平台，为有色金属冶炼过程实时控制和高效绿色生产创造了条件。项目共发表学术论文36篇，授权国家发明专利13项，获批软件著作权1件，转让专利技术2项，获湖南省技术发明一等奖1项。