LIBS online detection method for determining product element components in phosphorite flotation process

Abstract

The invention provides an LIBS (Laser-induced Breakdown Spectroscopy) online detection method for determining product element components in a phosphorite flotation process. The method comprises the following steps: sampling ore pulp; obtaining plasma spectral data of the ore pulp sample, and taking a small amount of sample for chemical analysis; establishing a regression model for the spectral data and the elemental component concentration by using a partial least square method; then detecting the ore pulp sample to be detected, substituting the obtained spectral data into the regression modelto obtain the elemental component concentration of the ore pulp to be detected; and finally recovering the ore pulp. According to the method, the LIBS technology is applied to the phosphorite flotation process for the first time, and real-time online detection of the components of the process product is realized. Compared with a traditional fluorescence spectrum analysis method, the method has the advantages of being high in analysis speed, free of sample preparation, high in detection precision and the like, and real-time guidance can be provided for addition of a front-end flotation reagentand optimization of the technological process.

Description

technical field [0001] The invention relates to the technical field of on-line detection, in particular to a LIBS on-line detection method for determining elemental components of phosphate rock flotation process products. Background technique [0002] Phosphate rock is an important strategic resource in my country, but the average grade of phosphate rock in my country is low, and 80% of the medium and low-grade phosphate rock has not been effectively developed and utilized. There are still key problems that need to be solved urgently in the phosphate rock flotation process , in which the detection of elemental components is one of the very important technical indicators in judging the grade of phosphate rock and guiding the process flow in the process of phosphate rock flotation. Regular manual sampling at the raw ore, concentrate, and tailings, after shaking, drying, and tableting, perform fluorescence spectrum analysis to obtain the contents of P, Mg, Fe, Al, Si and other el...

AI Technical Summary

Problems solved by technology

[0002] Phosphate rock is an important strategic resource in my country, but the average grade of phosphate rock in my country is low, and 80% of the medium and low-grade phosphate rock has not been effectively developed and utilized. There are still key problems that need to be solved urgently in the phosphate rock flotation process , in which the detection of elemental components is one of the very important technical indicators in judging the grade of phosphate rock and guiding the process flow in the process of phosphate rock flotation. Regular manual sampling at the raw ore, concentrate, and tailings, after shaking, drying, and tableting, perform fluorescence spectrum analysis to obtain the content of P, Mg, Fe, Al, Si and other element components

The disadvantages of this method are poor representativeness of sample collection, cumbersome steps, slow analysis and detection speed, delay in obtaining experimental data, special person is required to be responsible, high cost, and has no guiding significance for the addition of flotation agents in the front-end process. Therefore, in the production process There is a problem of poor quality stability of concentrate products, which greatly affects the production cost and product quality control of the enterprise

[0003] Laser Induced Breakdown Spectroscopy (LIBS) is an emerging elemental analysis technology, which has the advantages of real-time online, non-contact, no need for sample preparation, long-distance analysis, and simultaneous rapid detection of multiple elements. A cutting-edge analysis method in the field of analysis, currently there is no relevant application in the phosphate rock flotation process

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