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Method for detecting ferric ions in ore pulp electrolyte sample

A detection method and electrolyte technology, applied in the field of chemical analysis, can solve the problems of not finding ferric ions and increasing production costs, and achieve the effects of low cost, reduced production power consumption cost, and strong operability

Inactive Publication Date: 2020-04-07
XINSHAO CHENZHOU ANTIMONY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, due to not finding a suitable detection method to detect the content of ferric ions in the anolyte and cathodic rehydration
It has brought a lot of adverse effects on production and virtually increased production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 A kind of detection method of ferric ion in the slurry electrolyte sample

[0028] The inspection method includes the following steps:

[0029] Dissolve 1.02g of the slurry electrolyte sample in a mixed acid (12mol / L hydrochloric acid and phosphoric acid mixed uniformly in a volume ratio of 1:9), titrate with 0.1005mol / L ceric sulfate solution, and use sodium diphenylamine sulfonate (addition amount is 1 drop) as indicator, Fe 2+ Oxidized by cerium sulfate to Fe 3+ , measured Fe 2+ The content is 0.1125g;

[0030] Its reaction formula is as follows:

[0031] 2Ce(SO 4 ) 2 +2FeSO 4 = Ce 2 (SO 4 ) 3 +Fe 2 (SO 4 ) 3

[0032] Dissolve 1.01g of slurry electrolyte sample in 0.5mol / L hydrochloric acid medium, add 0.5mol / L stannous chloride solution, Fe 3+ is reduced to Fe 2+ , and then use 0.5mol / L mercuric chloride solution to oxidize excessive stannous, then titrate with 0.1005mol / L ceric sulfate solution, use sodium diphenylamine sulfonate (addit...

Embodiment 2

[0038] Embodiment 2 The detection method of ferric ion in a kind of pulp electrolyte sample

[0039] The inspection method includes the following steps:

[0040] Dissolve 1.01g of the slurry electrolyte sample in a mixed acid (12mol / L hydrochloric acid and phosphoric acid mixed uniformly in a volume ratio of 1:9), titrate with 0.1006mol / L ceric sulfate solution, and use sodium diphenylamine sulfonate (addition amount is 3 drops) as indicator, Fe 2+ Oxidized by cerium sulfate to Fe 3+ , measured Fe 2+ The content is 0.1052g;

[0041] Dissolve 1.05g of slurry electrolyte sample in 1.5mol / L hydrochloric acid medium, add 2.5mol / L stannous chloride solution, Fe 3+ is reduced to Fe 2+ , and then use 2.5mol / L high mercuric chloride solution to oxidize excessive stannous, titrate with 0.1006mol / L ceric sulfate solution, use sodium diphenylamine sulfonate (addition amount is 3 drops) as indicator, Fe 2+ Oxidized by cerium sulfate to Fe 3+ , the measured total iron content is 0.3...

Embodiment 3

[0043] Embodiment 3 A kind of detection method of ferric ion in the electrolyte sample of ore pulp

[0044] The inspection method includes the following steps:

[0045] Dissolve 1.07g of the slurry electrolyte sample in a mixed acid (12mol / L hydrochloric acid and phosphoric acid mixed uniformly in a volume ratio of 1:9), titrate with 0.1002mol / L ceric sulfate solution, and use sodium diphenylamine sulfonate (addition amount is 2 drops) as indicator, Fe 2+ Oxidized by cerium sulfate to Fe 3+ , measured Fe 2+ The content is 0.1202g;

[0046] Dissolve 1.04g of slurry electrolyte sample in 1mol / L hydrochloric acid medium, add 1.5mol / L stannous chloride solution, Fe 3+ is reduced to Fe 2+ , and then use 1.5mol / L high mercury chloride solution to oxidize excessive stannous, titrate with 0.1002mol / L ceric sulfate solution, use sodium diphenylamine sulfonate (addition amount is 2 drops) as indicator, Fe 2+ Oxidized by cerium sulfate to Fe 3+ , the measured total iron content is...

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Abstract

The invention provides a method for detecting ferric ions in an ore pulp electrolyte sample. The method comprises the following steps: under the complexing action of mixed acid, performing titrating by using a ceric sulfate solution, oxidizing Fe2+ into Fe3+ by using sodium diphenylaminesulfonate as an indicator, and measuring the content of Fe2+; adding a stannous chloride solution into a hydrochloric acid medium, reducing Fe3+ into Fe2+, oxidizing excessive stannous chloride by using a mercuric chloride solution, performing titrating by using the cerous sulfate solution, oxidizing Fe2+ intoFe3+ by using cerous sulfate by using sodium diphenylaminesulfonate as an indicator, and measuring the content of total iron; and subtracting the content of Fe2+ from the content of total iron to obtain the content of Fe3+. According to the method, the content of ferric ions in the solution can be accurately determined, and a certain amount of antimony and copper do not influence the determinationof iron.

Description

technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a method for detecting ferric ions in an ore pulp electrolyte sample. Background technique [0002] The pulp electrolytic antimony smelting process is the most cutting-edge method for producing antimony metal, which mainly relies on the reaction of ferric ions and divalent sulfur anions to leach antimony from antimony sulfide ore. In the whole process, ferric ions play a vital role. [0003] Sb 2 S 3(s) +6Fe 3+ (aq) +12Cl - =2SbCl 6 3- (aq) +3S0 (s) +6Fe 2+ (aq) [0004] On the one hand, ferric ions react with the above equation in the anode area, and the content of ferric iron in the anode area ensures the leaching of antimony in the raw ore; on the other hand, in the cathode area, ferric ions consume current and the following reactions occur : [0005] Fe 3+ +e=Fe 2+ [0006] It affects the current efficiency, so it is necessary to control the content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16
CPCG01N31/16
Inventor 龙志华康钦科
Owner XINSHAO CHENZHOU ANTIMONY IND CO LTD
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