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Analysis method for quickly and accurately measuring zinc in zinc electrolyte

A zinc electrolyte and accurate measurement technology, applied in the detection field, can solve problems such as inaccurate and reliable analysis data, and achieve the effect of solving inaccurate and reliable analysis data

Inactive Publication Date: 2012-08-22
BAIYIN NONFERROUS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to eliminate the deficiencies and shortcomings of the above-mentioned prior art, to provide an accurate and reliable method for determining zinc in zinc electrolytes with high manganese content, and to solve the problem of inaccurate and reliable analytical data in the existing methods

Method used

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  • Analysis method for quickly and accurately measuring zinc in zinc electrolyte
  • Analysis method for quickly and accurately measuring zinc in zinc electrolyte
  • Analysis method for quickly and accurately measuring zinc in zinc electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2－7

[0027] Pipette 6 parts of 1.00mL manganese-containing electrolyte into a 300mL triangular beaker, blow about 20mL of water, add 0.5, 1.0, 2.0, 3.0, 4.0, 5.0g of ammonium chloride, shake well, add 10mL of ammonia water, add 5.0mL For hydrogen peroxide, shake well, boil until no continuous bubbles are produced, destroy the hydrogen peroxide, put it in a 500mL triangular beaker with fast filter paper while it is hot, wash the beaker twice with hot 5% ammonium chloride-5% ammonia water washing solution, and precipitate 6-8 Second-rate. Shake the filtrate well, heat and concentrate to about 100 mL, remove and cool, add 0.1 g of ascorbic acid, shake well, add 3-4 drops of xylenol orange indicator, and adjust the solution with hydrochloric acid (1+1) and ammonia water (1+1). If it is yellow, add 5mL each of saturated sodium fluoride and thiourea, shake well, add 20mL acetic acid-sodium acetate buffer solution, shake well, and use EDTA standard titration solution until the solution ch...

Embodiment 8－12

[0032] Pipette 5 parts of 1.00mL manganese-containing electrolyte into a 300mL triangular beaker, blow about 20mL of water, add 3.0g of ammonium chloride, shake well, add 5.0, 8.0, 10.0, 12.0, 15.0mL of ammonia water respectively, add 5mL of hydrogen peroxide, Shake well, boil until no continuous bubbles are produced, destroy the hydrogen peroxide, put it in a 500mL triangular beaker with quick filter paper while it is hot, wash the beaker twice with hot 5% ammonium chloride-5% ammonia water washing solution, and precipitate 6-8 times. Shake the filtrate well, heat and concentrate to about 100 mL, remove and cool, add 0.1 g of ascorbic acid, shake well, add 3-4 drops of xylenol orange indicator, and adjust the solution with hydrochloric acid (1+1) and ammonia water (1+1). If it is yellow, add 5mL each of saturated sodium fluoride and thiourea, shake well, add 20mL acetic acid-sodium acetate buffer solution, shake well, and use EDTA standard titration solution until the solution...

Embodiment 13－19

[0037] Pipette 5 parts of 1.00mL manganese-containing electrolyte into a 300mL conical beaker, blow about 20mL of water, add 3.0g of ammonium chloride, shake well, add 10mL of ammonia water, add 1.0, 3.0, 4.0, 5.0, 6.0, 7.0, 9.0mL hydrogen peroxide, shake well, boil until no continuous bubbles are produced, destroy the hydrogen peroxide, put it in a 500mL triangular beaker with fast filter paper while it is hot, wash the beaker twice with hot 5% ammonium chloride-5% ammonia water washing solution, and precipitate 6 -8 times. Shake the filtrate well, heat and concentrate to about 100 mL, remove and cool, add 0.1 g of ascorbic acid, shake well, add 3-4 drops of xylenol orange indicator, and adjust the solution with hydrochloric acid (1+1) and ammonia water (1+1). If it is yellow, add 5mL each of saturated sodium fluoride and thiourea, shake well, add 20mL acetic acid-sodium acetate buffer solution, shake well, and use EDTA standard titration solution until the solution changes f...

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Abstract

The invention provides an analysis method for quickly and accurately measuring zinc in zinc electrolyte. The method comprises the following steps of: weighing quantitative zinc electrolyte in a container, blowing water, then adding excessive ammonium chloride, and shaking uniformly; adding excessive ammonia water and hydrogen peroxide, and shaking uniformly; boiling until no continuous air bubbles are generated; breaking the hydrogen peroxide, and performing hot filtration with quick filter paper; washing the filtering container with ammonium chloride-ammonia water washing liquid, and precipitating; uniformly shaking the filtrate, and heating for concentration; cooling and adding ascorbic acid; shaking uniformly and adding a xylenol orange indicator; adjusting with hydrochloric acid and ammonia water until the solution is yellow; adding saturated sodium fluoride and thiourea and shaking uniformly; adding acetic acid-sodium acetate buffer solution, and shaking uniformly; and titrating with the EDTA (Ethylene Diamine Tetraacetic Acid) standard titration solution until the solution becomes bright yellow from purple red. Through the invention, the influence of manganese ion on the measurement of zinc content in zinc electrolyte can be effectively shielded, the problem that the analysis data is not accurate or reliable in the existing method is solved, and the measured result has an instruction effect on the production of zinc electrolyte.

Description

technical field [0001] The invention relates to a detection method, in particular to an analysis method for rapidly and accurately determining zinc in zinc electrolyte. Background technique [0002] In the zinc hydrometallurgy process, the waste electrolyte produced in the zinc electrolysis process is mainly used as a solvent to dissolve the valuable metals in the zinc-containing raw materials into the solution. In addition to zinc, the raw materials generally contain iron, copper, Elements such as cadmium, cobalt, nickel, arsenic, antimony and rare metals. During the leaching process, in addition to zinc entering the solution, metal impurities also dissolve to varying degrees and enter the solution together with zinc. In this process, the analysis method of the zinc content in the supernatant and the electrolyte has been using the more classic EDTA complexometric titration method, but the content of manganese in the zinc ore currently used in China is relatively high, resu...

Claims

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Application Information

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IPC IPC(8): G01N21/78G01N1/38G01N1/44
Inventor 石镇泰牛艳红武逸云
Owner BAIYIN NONFERROUS GROUP
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