CN106124503A - Method for detecting concentration of cyanide in ore pulp - Google Patents
Method for detecting concentration of cyanide in ore pulp Download PDFInfo
- Publication number
- CN106124503A CN106124503A CN201610566336.3A CN201610566336A CN106124503A CN 106124503 A CN106124503 A CN 106124503A CN 201610566336 A CN201610566336 A CN 201610566336A CN 106124503 A CN106124503 A CN 106124503A
- Authority
- CN
- China
- Prior art keywords
- solution
- concentration
- ore pulp
- titration
- cyanogen root
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/82—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a precipitate or turbidity
- G01N21/83—Turbidimetric titration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Engineering & Computer Science (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The invention discloses a method for detecting the concentration of cyanide in ore pulp, which comprises the following steps of firstly filtering an ore pulp sample to be tested into a clear solution; adding an iodide reagent into the clarified solution to enable the concentration of iodide ions in the solution to reach 0.001-0.01 mol/L; adding the prepared clear solution into a quartz titration cup, and starting a magnetic stirrer; preparing 0.05-0.1mol/L AgNO3Titrating the solution by using a burette, and recording the volume consumed by the titrant and the corresponding light power value in the titration process; judging the equivalence point of the change of the optical power value by using a threshold value, and according to the equivalence point AgNO3The consumption of the reagent calculates the cyanide concentration in the tested pulp sample. The method solves the problems existing in the detection by a potentiometric titration method and an electrode method, is convenient for realizing automatic online detection, and lays a foundation for online detection and control of cyanide concentration in the gold smelting process.
Description
Technical field
The present invention relates to ion concentration detection technique field, particularly relate to the detection method of cyanogen root concentration in a kind of ore pulp.
Background technology
Gold Cyanide Leaching is to make leaching agent with cyanide solution, soaks from containing the mineral extracting gold silver gold silver mineral raw material
Going out technique, cyanogen root concentration is the important technical index that gold leaches, too high or too low all unfavorable, due to leachate ore pulp to producing
Middle complicated component, some electrochemical analysis methods are interfered, and if constant-current titration method, electrode method are during measuring, all can
Affected the potential response measuring electrode by foreign ion in ore pulp, and then had influence on certainty of measurement.
In prior art, on-line analysis method is not also applied universal, cyanogen root Concentration Testing in gold Cyanide Leaching
The method of commonly used manual titration, but this method has been not applied for the demand of gold smelting.
Summary of the invention
It is an object of the invention to provide the detection method of cyanogen root concentration in a kind of ore pulp, this method solve potentiometric titration
And the problem that the detection of electrode method exists, it is simple to realize automatic on-line detection, for the online inspection of cyanogen root concentration during gold smelting
Survey and control to lay a good foundation.
The detection method of cyanogen root concentration in a kind of ore pulp, described method includes:
Tested mine plasm is filtered into settled solution；
In described settled solution, add iodide reagent, make iodide ion concentration in solution reach 0.001-0.01mol/L；
The settled solution modulated is added in quartz titration cup, opens magnetic stirring apparatus；
The AgNO of preparation 0.05-0.1mol/L3Solution, uses burette to titrate, record titration in titration process
The volume of agent consumption and the optical power value of correspondence；
Utilize the equivalent point that threshold decision optical power value changes, and according to equivalent point AgNO3The consumption calculating quilt of reagent
Cyanogen root concentration in test mine plasm.
Described tested mine plasm is filtered into settled solution, specifically includes:
Use qualitative filter paper or filter element that tested mine plasm is filtered into settled solution, make settled solution turbidity <
10NTU。
Described according to equivalent point AgNO3Cyanogen root concentration in the tested mine plasm of consumption calculating of reagent, specifically wraps
Include:
When reaching to set threshold value through the optical power value rate of change in solution, stop titration, and according to titration end-point institute
The AgNO consumed3The amount of reagent calculates the cyanogen root concentration in tested mine plasm.
The described volume recording titrant consumption in titration process and the optical power value of correspondence, specifically include:
Use semiconductor laser as light source, silicon semiconductor sensor as detector, in real time in detection settled solution
Optical power value situation of change through titrant.
Described iodide reagent is potassium iodide reagents.
As seen from the above technical solution provided by the invention, said method solves potentiometric titration and the inspection of electrode method
Survey the problem existed, it is simple to realize automatic on-line detection, establish for on-line checking and the control of cyanogen root concentration during gold smelting
Determine basis.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in embodiment being described below
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for this
From the point of view of the those of ordinary skill in field, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the detection method schematic flow sheet of cyanogen root concentration in the provided ore pulp of the embodiment of the present invention；
Fig. 2 is the curve synoptic diagram of solution printing opacity performance number change in example titration process of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on this
Inventive embodiment, the every other enforcement that those of ordinary skill in the art are obtained under not making creative work premise
Example, broadly falls into protection scope of the present invention.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail, is illustrated in figure 1 the present invention and implements
The detection method schematic flow sheet of cyanogen root concentration in the provided ore pulp of example, described method includes:
Step 11: tested mine plasm is filtered into settled solution；
In this step, specifically can use qualitative filter paper or filter element that tested mine plasm is filtered into settled solution,
Make the turbidity < 10NTU of settled solution.
Step 12: add iodide reagent in described settled solution, make iodide ion concentration in solution reach 0.001-
Between 0.01mol/L；
In this step, described iodide reagent can be potassium iodide reagents.
It addition, in addition to the iodide reagent that above-described embodiment is provided, those skilled in the art use other halogenide to try
Agent is also feasible.
Step 13: the settled solution modulated is added in quartz titration cup, opens magnetic stirring apparatus；
Step 14: the AgNO of preparation 0.05-0.1mol/L3Solution, uses burette to titrate, remembers in titration process
The volume of record titrant consumption and the optical power value of correspondence；
In this step, semiconductor laser specifically can be used as detector as light source, silicon semiconductor sensor,
In real time through the optical power value situation of change of titrant in detection settled solution.
Step 15: utilize the equivalent point that threshold decision optical power value changes, and according to equivalent point AgNO3The consumption of reagent
Calculate the cyanogen root concentration in tested mine plasm.
In this step, specifically when reaching to set threshold value through the optical power value rate of change in solution, stop titration,
And the AgNO consumed according to titration end-point3The amount of reagent calculates the cyanogen root concentration in tested mine plasm.
For example, if taking 10ml sample, the AgNO of 0.05mol/L is used3Solution titrates, and passes through threshold decision
Consumption when reaching titration end-point is 4.56ml, then the cyanogen root concentration value in solution is:
Cyanogen root concentration=AgNO3Concentration * AgNO3Consumption * 2/ sample volume=4.56*0.05*2/10=0.0456mol/
L。
Above-mentioned set threshold value ordinary circumstance, between 5%-10%, reaches titration end-point according in actual titration process
Time absorbance situation of change calculate threshold value, typically take more than 5 times tests, average.
Specific embodiment and principle to above-mentioned detection method illustrate below:
First the tested mine plasm after being processed by quantitative filtering is placed in titration cup, adds in settled solution
Appropriate iodide, titrant uses AgNO3Reagent, by AgNO3It is gradually added in dropping cup, will occur as follows in titration cup
Reaction:
2CN-+Ag+→Ag(CN)2-
Ag++I-→AgI↓
Work as AgNO3Add fashionable, first with the CN in solution-Ion reacts and generates the Ag (CN) being dissolved in water2-Complexation from
Son, works as CN-When reacting complete, the silver ion added and the I in solution-Generate water-fast AgI precipitate, at this moment solution
Start to become cloudy；
Then using laser instrument to irradiate titration cup as light source, the other side silicon detector measurement at titration cup passes through
The optical power value of light, when solution turned cloudy, solution printing opacity performance number acute variation, find this change point, be titration end-point,
The AgNO consumed according to this titration end-point3The amount of reagent calculates the cyanogen root concentration in tested mine plasm, is illustrated in figure 2
The curve synoptic diagram of solution printing opacity performance number change in example titration process of the present invention.
It addition, the method that above-mentioned detection solution turbidity uses LASER Light Source+silicon detector, light source uses semiconductor laser
Device, wavelength 520nm, the coupling of tail end band optical fiber and collimator, laser instrument adds automatic temperature-controlled regulation power stability, power after coupling
Stability is less than 0.5%, and the collimated light angle of divergence is less than 1 degree.After collimation, LASER Light Source is through solution in titration cup, is irradiated to silicon and visits
Surveying on device detection window, incidence end adds optical filter regulating optical power value, and end of probe adds bandpass filter and reduces environment light source impact.
In sum, the detection method that the embodiment of the present invention is provided has the advantage that
1) pre-treatment to mine plasm is simple, it is easy to accomplish instrumentation, Aulomatizeted Detect；
2) not affected by other interfering ion in ore pulp, accuracy of detection is high；
3) detection process uses Laser Detecting Set, is non-contact measurement, does not contacts with ore pulp, and reliability is high, core
Heart component life is long；
4) cyanogen root detection range is 10-10000mg/L, can meet gold smelting high-concentration and low-concentration testing requirement.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change that can readily occur in or replacement,
All should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be as the criterion.
Claims (5)
1. the detection method of cyanogen root concentration in an ore pulp, it is characterised in that described method includes:
Tested mine plasm is filtered into settled solution；
In described settled solution, add iodide reagent, make iodide ion concentration in solution reach 0.001-0.01mol/L；
The settled solution modulated is added in quartz titration cup, opens magnetic stirring apparatus；
The AgNO of preparation 0.05-0.1mol/L3Solution, uses burette to titrate, and records titrant consumption in titration process
Volume and the optical power value of correspondence；
Utilize the equivalent point that threshold decision optical power value changes, and according to equivalent point AgNO3The tested ore deposit of consumption calculating of reagent
Cyanogen root concentration in slurry samples.
The detection method of cyanogen root concentration in ore pulp the most according to claim 1, it is characterised in that described by tested ore pulp sample
Product are filtered into settled solution, specifically include:
Use qualitative filter paper or filter element that tested mine plasm is filtered into settled solution, make the turbidity < 10NTU of settled solution.
The detection method of cyanogen root concentration in ore pulp the most according to claim 1, it is characterised in that described according to equivalent point AgNO3
Cyanogen root concentration in the tested mine plasm of consumption calculating of reagent, specifically includes:
When reaching to set threshold value through the optical power value rate of change in solution, stop titration, and consumed according to titration end-point
AgNO3The amount of reagent calculates the cyanogen root concentration in tested mine plasm.
The detection method of cyanogen root concentration in ore pulp the most according to claim 1, it is characterised in that described note in titration process
The volume of record titrant consumption and the optical power value of correspondence, specifically include:
Use semiconductor laser as light source, silicon semiconductor sensor as detector, in real time detection settled solution passes through
The optical power value situation of change of titrant.
The detection method of cyanogen root concentration in ore pulp the most according to claim 1, it is characterised in that
Described iodide reagent is potassium iodide reagents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566336.3A CN106124503A (en) | 2016-07-18 | 2016-07-18 | Method for detecting concentration of cyanide in ore pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610566336.3A CN106124503A (en) | 2016-07-18 | 2016-07-18 | Method for detecting concentration of cyanide in ore pulp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106124503A true CN106124503A (en) | 2016-11-16 |
Family
ID=57288983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610566336.3A Pending CN106124503A (en) | 2016-07-18 | 2016-07-18 | Method for detecting concentration of cyanide in ore pulp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106124503A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113125430A (en) * | 2021-04-19 | 2021-07-16 | 郑州大学 | Method for measuring cyanide concentration in antimony-containing gold ore cyanidation leaching process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2218025A5 (en) * | 1973-02-12 | 1974-09-06 | Dahms Harald | Bicarbonate ion determn appts - by photoelectric detection of equivalence point in colorimetric titration |
| CN86204969U (en) * | 1986-07-14 | 1987-08-05 | 潘锋 | Automatic controlling device for titration experiment |
| CN1882829A (en) * | 2003-11-19 | 2006-12-20 | 劳梅迪奇股份公司 | Device and method for analysing a liquid sample |
| CN101131364A (en) * | 2007-09-26 | 2008-02-27 | 东北电力大学 | Measuring apparatus for assessing performance of antisludging agent based on light transmittance ratio method |
| CN102706875A (en) * | 2012-05-30 | 2012-10-03 | 西北矿冶研究院 | Method for determining chloride ions in copper-zinc-containing electrolyte sample |
| CN103499577A (en) * | 2013-10-16 | 2014-01-08 | 重庆紫光化工股份有限公司 | Method of detecting hydrocyanic acid and chloride ion content in sample |
| CN104833674A (en) * | 2015-05-13 | 2015-08-12 | 长春黄金研究院 | Measuring method for cyanides in cyanide-containing wastewater of gold mine |
| CN105372241A (en) * | 2015-10-28 | 2016-03-02 | 常熟理工学院 | Bionic spectral titration method and device for precipitate system |
-
2016
- 2016-07-18 CN CN201610566336.3A patent/CN106124503A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2218025A5 (en) * | 1973-02-12 | 1974-09-06 | Dahms Harald | Bicarbonate ion determn appts - by photoelectric detection of equivalence point in colorimetric titration |
| CN86204969U (en) * | 1986-07-14 | 1987-08-05 | 潘锋 | Automatic controlling device for titration experiment |
| CN1882829A (en) * | 2003-11-19 | 2006-12-20 | 劳梅迪奇股份公司 | Device and method for analysing a liquid sample |
| CN101131364A (en) * | 2007-09-26 | 2008-02-27 | 东北电力大学 | Measuring apparatus for assessing performance of antisludging agent based on light transmittance ratio method |
| CN102706875A (en) * | 2012-05-30 | 2012-10-03 | 西北矿冶研究院 | Method for determining chloride ions in copper-zinc-containing electrolyte sample |
| CN103499577A (en) * | 2013-10-16 | 2014-01-08 | 重庆紫光化工股份有限公司 | Method of detecting hydrocyanic acid and chloride ion content in sample |
| CN104833674A (en) * | 2015-05-13 | 2015-08-12 | 长春黄金研究院 | Measuring method for cyanides in cyanide-containing wastewater of gold mine |
| CN105372241A (en) * | 2015-10-28 | 2016-03-02 | 常熟理工学院 | Bionic spectral titration method and device for precipitate system |
Non-Patent Citations (3)
| Title |
|---|
| 张丽等: "环境水样中氰化物分析方法研究", 《污染防治技术》 * |
| 赵玉娥: "银量法测定氰化物的指示剂", 《黄金》 * |
| 郑翠玲: "硝酸银容量法快速测定水质中氰化物", 《福建分析测试》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113125430A (en) * | 2021-04-19 | 2021-07-16 | 郑州大学 | Method for measuring cyanide concentration in antimony-containing gold ore cyanidation leaching process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107167472A (en) | The rapid assay methods of total cyanide in a kind of ore pulp containing cyanogen | |
| CN105136894A (en) | Determination method of chloride ion content of copper electrolyte | |
| CN103969202A (en) | Method for detecting content of total iron in iron ore through automatic potentiometric titration of photometric electrode | |
| CN102539426A (en) | Method for determining phosphorus in silicon-manganese alloy | |
| CN110927328A (en) | Method for measuring content of soluble hydrogen sulfide in desulfurization solution | |
| CN103994994A (en) | Method for analyzing silicon in ferro-vanadium | |
| CN102141537B (en) | Analysis method of sulfate radicals in sulfate and thiosulfate mixture | |
| Moustafa et al. | A highly selective bulk optode based on 6-{4-(2, 4-dihydroxy-phenyl) diazenyl) phenyl}-2-oxo-4-phenyl-1, 2-dihydro-pyridine-3-carbonitrile incorporating chromoionophore V for determination of nano levels of cadmium | |
| CN106124503A (en) | Method for detecting concentration of cyanide in ore pulp | |
| CN103852509B (en) | Potentiometric titration analysis method for cyanide | |
| CN106596504A (en) | Method of ultrasensitive detection on cyanide in water body | |
| CN101650337B (en) | Method for testing chloride content in smoke gas desulfurization system | |
| Li et al. | Intercomparison and coupling of magnesium-induced co-precipitation and long-path liquid-waveguide capillary cell techniques for trace analysis of phosphate in seawater | |
| KR101433228B1 (en) | Method for analyzing inorganic ion concentration in sample without phosphate ion interference | |
| CN106018401A (en) | Method for determining content of chlorine ions in water | |
| CN106483157A (en) | The determination method of total chlorine in a kind of doctor solution | |
| CN102384936A (en) | Method for determining hydrogen sulfide concentration in liquid sulfur | |
| CN101592644B (en) | Method for detecting barium ions in oil field water | |
| CN103743740B (en) | steam dryness measuring method and device | |
| Xiao et al. | Synchronous fluorescence and absorbance dynamic liquid drop sensor for Cr (VI) determination at the femtomole level | |
| Luthy | Manual of methods: preservation and analysis of coal gasification wastewaters | |
| CN112098589A (en) | Test method for rapidly testing calcium content in steel slag | |
| Skok et al. | Online determination of sulfide using an optical immersion probe combined with headspace liquid-phase microextraction | |
| Tavallali et al. | Developing fast and facile method for speciation analysis of vanadium (V/IV) ions with calmagite immobilization on triacetyl cellulose membrane in water samples | |
| Himeno et al. | Simultaneous determination of Zr (IV) and Hf (IV) by CE using precolumn complexation with a [PW11O39] 7− ligand |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |
|
| RJ01 | Rejection of invention patent application after publication |