Method and device for detecting content of sulfide and / or sulfate in mineral

By employing the staged temperature combustion iodometric method, the content of sulfides and sulfates in minerals is detected through oxidation and reduction reactions, respectively. This solves the problem that existing technologies cannot provide information on the distribution of sulfur speciation, and achieves efficient and accurate detection of sulfides and sulfates.

CN122109425APending Publication Date: 2026-05-29SOUTHWEST JIAOTONG UNIV
0 Cites 0 Cited by

Patent Information

Application Number
CN202610331569.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-18
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Current technology cannot simultaneously detect the content of sulfides and sulfates in minerals, and cannot provide information on the distribution of sulfur speciation.

Method used

The staged temperature combustion iodometric method was used to detect the sulfide and sulfate content in minerals through oxidation and reduction reactions, respectively. The oxidation reaction was carried out at 500~700℃, and the reduction reaction was carried out at 1150~1350℃. The content of sulfur dioxide gas was determined by titration using iodometric titration.

Benefits of technology

It enables the simultaneous determination of sulfide, sulfate, and total sulfur content in a single detection process, providing information on sulfur speciation. The detection is highly accurate, time-efficient, and suitable for industrial applications.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a method and a device for detecting the content of sulfides and / or sulfates in minerals, and relates to the technical field of analysis and detection. The method adopts a staged temperature combustion iodometric method for determination, and comprises the following steps: firstly, carrying out an oxidation reaction at a low-temperature stage (500-700 DEG C) to oxidize sulfide in a mineral to be detected into sulfur dioxide; the method comprises the following steps: carrying out a reduction reaction at a low temperature stage (1150-1350 DEG C) to reduce sulfate in combustion residues into sulfur dioxide, titrating the sulfur dioxide generated at the low temperature stage and the high temperature stage through an iodometric method, and calculating the content of sulfide and / or sulfate in the mineral to be detected. The sulfide content, the sulfate content and the total sulfur content in the to-be-detected mineral can be obtained at the same time in the one-time detection process, and then the sulfur form distribution information in the to-be-detected mineral is obtained. Moreover, the method provided by the invention is simple to operate, short in time consumption, low in sulfur form transformation risk, high in detection accuracy and suitable for industrial detection application.
Need to check novelty before this filing date? Find Prior Art