Method for measuring low-content antimony in gangue sample

A low-content, sample technology, applied in the direction of chemical analysis by titration, can solve the problems of long analysis flow process, and achieve the effect of fast analysis speed, good popularization and application value, and high method precision and accuracy.

Inactive Publication Date: 2020-01-03
湖南新龙矿业有限责任公司
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Problems solved by technology

Some photometric methods need to use toxic organic solvent-benzene for extraction, the analysis flow is long, and special operators, analysis sites, and analysis equipment are required

Method used

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Examples

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Embodiment 1

[0064] A method for determining low content antimony in tailings samples, comprising the following steps,

[0065] 1) Measure 1500ml of cerium sulfate standard solution with a concentration of 0.003g / ml in antimony measured by traditional cerium sulfate volumetric method, dilute it to about 4500ml with 8% sulfuric acid solution, and shake well.

[0066] 2) Weigh 1.000 grams of low-grade antimony (about 0.08%) management sample into a 300ml Erlenmeyer flask, add a small amount of water to wet the sample, add 1-2 grams of anhydrous potassium sulfate, 15-18ml of sulfuric acid, and cover with a short Neck funnel, put it on an electric heating plate and heat it. While keeping the temperature of the solution near boiling, remove the water. When sulfuric acid fumes start to emit, add 1 / 8 piece of qualitative filter paper with a diameter of 11cm, and continue heating until the dark color of filter paper carbonization disappears. , move it to a high-temperature electric furnace, and he...

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PUM

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Abstract

The invention provides a method for measuring low-content antimony in a gangue sample. The method comprises the following steps: 1) configuring and calibrating a ceric sulfate standard solution; 2) sample preparation: dissolving the gangue sample in a mixed solution of sulfuric acid and hydrochloric acid; and 3) titration: continuing to heat the solution in the step 2) to 80-90 DEG C, immediatelyadding 0.2% methyl orange-methylene blue solution, titrating the ceric sulfate standard solution under constant oscillating, and heating the solution to 80-90 DEG C in the vicinity of the end point, and continuing to titrate until green appears. The method provided by the invention is an improvement based on a ceric sulfate capacity method and is consistent with the reagents used in the traditional ceric sulfate capacity method, so no special ceric sulfate needs to be purchased; no toxic reagent is used neither; the method provided by the invention has a high analysis speed; the precision andthe accuracy of the method are relatively high; the method can be easily mastered by the operation personnel, and the operation personnel does not need to be additionally trained; and satisfactory results can be obtained for the analysis of gangue samples with antimony contents of 0.05-50.50% antimony.

Description

technical field [0001] The invention relates to a method for determining antimony content, in particular to a method for determining low content antimony in tailings samples. Background technique [0002] At present, most of the analysis of antimony in tailings has been the traditional cerium sulfate volumetric method (S / T556-2009 "Methods for Chemical Analysis of Antimony Concentrates"), but the detection limit of this method is 0.10%. With the continuous improvement of technology, the antimony content in the tailings has dropped to about 0.06%. The traditional analysis method can no longer play a guiding role in the mineral processing production, and cannot truthfully reflect the recovery rate of the mineral processing. [0003] In order to improve the determination of low-content antimony, there are now potassium iodide colorimetric methods (Chen Zhen'e, Peng Qin; Potassium iodide colorimetric method for the determination of antimony content, JW-17 (quality). 1-2010, "Hun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16
CPCG01N31/16
Inventor 贺仕军张新念刘洋石文莹
Owner 湖南新龙矿业有限责任公司
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