Method for Raman spectrum characterization of heterogeneous foam layer minerals in antimony ore flotation

Abstract

The invention discloses a method for Raman spectrum characterization of heterogeneous foam layer minerals in antimony ore flotation. The method comprises the following steps: acquiring a spectrum of a pure antimony sulfide substance; collecting foam layer samples in multiple times from the same flotation cell at a flotation site; measuring the obtained samples by establishing a large-spot Raman spectrum detection system; preprocessing the samples by adopting preprocessing methods, such as smooth denoising, polynomial fitting baseline deduction and the like; identifying the number of spectral peaks of the preprocessed foam layer samples by using a peak searching algorithm; establishing a spectral peak information table; carrying out matching identification on the spectral peaks of the foam layer samples and the pure substance antimony sulfide by using a main characteristic peak matching algorithm; classifying all the foam layer samples by combining a K-means clustering method; carrying out weighted statistic on different categories of probabilities to obtain a Raman spectrum of the mineral content of a foam layer. According to the method disclosed by the invention, the spectral peaks of the foam layer samples are identified by establishing the large-spot Raman spectrum detection system, so that the characterization of the foam layer sample spectrum of the flotation cell is realized, the non-uniformity in the spectrum detection of the heterogeneous foam layer can be effectively overcome, the spectrum of the heterogeneous foam layer can be rapidly and completely characterized, and a basis is laid for rapid and real-time detection of the mineral content of the foam layer.

Description

technical field [0001] The invention relates to the field of Raman spectrum detection, and relates to a Raman spectrum characterization method for heterogeneous objects, in particular to a Raman spectrum characterization method for antimony flotation heterogeneous foam layer minerals. Background technique [0002] The antimony flotation process is to increase the purity of the useful component antimony sulfide in the antimony ore through the flotation process. The level of antimony sulfide content directly represents the level of mineral grade, which is one of the important technical indicators for the optimal control of antimony flotation process. The traditional flotation production process mainly judges the flotation status at this time by workers observing the state of the flotation foam and estimates the content of effective minerals in the foam layer to adjust the metering. This process depends on the experience and ability of the operator, and the observer Subjective...

AI Technical Summary

Problems solved by technology

[0007] At present, for multiple sampling samples, most of the multi-sample random processing methods use sample probability for analysis. However, for the foam layer samples obtained by multiple measurements, the sample points themselves do not have a fixed probability distribution interval, and artificial division intervals are required.

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