A kind of cyanide potentiometric titration analysis method
A potentiometric titration and analysis method technology, applied in the field of electrochemical analysis, can solve the problems of electrode signal interference, inability to detect for a long time, low reliability, etc., achieve fast and accurate detection, and facilitate online automatic monitoring
Active Publication Date: 2016-05-25
BEIJING GENERAL RES INST OF MINING & METALLURGY
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However, due to the complex composition of the leachate and the coexistence of various anions and cations, it interferes with the electrode signal and affects the measurement accuracy. Moreover, the cyanide ion electrode has low reliability and short life in the slurry, so it cannot be used for long-term detection.
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[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] Such as figure 1 As shown, the embodiment of the present invention provides a kind of cyanide potentiometric titration analysis method, comprising:
[0021] Step 11, filtering the ore pulp into a clear solution;
[0022] Step 12, adding a reactant to the clarified solution to remove sulfide ions in the clarified solution;
[0023] Step 13, adding a pH buffer reagent to the solution after removing the sulfide ions to obtain a weak alkaline ...
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The invention discloses a titration analysis method for a potential of cyanogen. The titration analysis method comprises the following steps: filtering ore pulp into a settled solution; adding a reaction agent into the settled solution to remove sulfur ions from the settled solution; adding a pH buffer reagent into the settled solution from which the sulfur ions are removed, so as to obtain a weak alkaline solution; quantifying and dropwise adding a titrant into the weak alkaline solution, and simultaneously measuring the potential of a compound silver ring electrode arranged in the weak alkaline solution; calculating the concentration of the cyanogen according to the consumed volume of the titrant and a potential value of the corresponding compound silver ring electrode. According to an electrochemical analysis method based on potential titration, an ore pulp sample is preprocessed, and the cyanogens is detected by virtue of a potential titration method by utilizing the titrant, so that the concentration of the cyanogen can be rapidly and accurately detected, and the online automatic monitoring is conveniently realized.
Description
technical field [0001] The invention relates to the field of electrochemical analysis, in particular to a cyanide potentiometric titration analysis method. Background technique [0002] Gold cyanide leaching is a mineral leaching process that uses cyanide solution as a leaching agent to extract gold and silver from gold and silver-containing mineral raw materials. The cyanide concentration is an important process index for gold leaching. Too high or too low is not good for production. Due to the complex composition of leachate slurry, some electrochemical analysis methods are disturbed, and there is no mature electrochemical analysis method at present. [0003] At present, the detection of cyanide in domestic gold cyanide leaching generally adopts the method of manual titration, using KI as the colorimetric agent, and using AgNO 3 Carry out titration, judge the titration end point and calculate the cyanide concentration through the color change. However, manual titration i...
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IPC IPC(8): G01N27/42
Inventor 徐宁李传伟赵建军方文赵海利
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY