Method for measuring impurity elements aluminum, phosphor and titanium in nickel concentrate ores

A technology of impurity elements and concentrates, applied in the field of determination of impurity elements aluminum, titanium, and phosphorus in nickel concentrates, can solve the problems of difficult analysis of large quantities of samples, expensive instruments, and limited number of digested samples, etc., to achieve the analysis cycle. Short, strong anti-matrix interference, good accuracy

Inactive Publication Date: 2018-09-07
BAIYIN NONFERROUS GROUP
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Problems solved by technology

Impurity elements such as aluminum, calcium, cobalt, chromium, copper, manganese, magnesium, nickel, lead, zinc, etc. in nickel concentrate have been digested by microwave samples and determined by inductively coupled plasma atomic emission spectrometry. The number of digested samples is limited, the cost of the instrument is too expensive, and the hidden dangers of high pressure (possible overpressure) make it difficult to analyze industrial large-scale samples

Method used

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  • Method for measuring impurity elements aluminum, phosphor and titanium in nickel concentrate ores
  • Method for measuring impurity elements aluminum, phosphor and titanium in nickel concentrate ores
  • Method for measuring impurity elements aluminum, phosphor and titanium in nickel concentrate ores

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Embodiment Construction

[0023] The present invention will be described in detail below in combination with specific embodiments.

[0024] 1, the present invention uses reagent and instrument measurement parameter in assay process to have:

[0025] (1) Reagent preparation:

[0026] 1.1. Hydrochloric acid: ρ1.19g / mL, superior grade.

[0027] 1.2. Nitric acid: ρ1.42g / mL, superior grade.

[0028] 1.3. Hydrofluoric acid: ρ1.16g / mL.

[0029] 1.4. Perchloric acid: ρ1.67g / mL.

[0030] 1.5. Hydrochloric acid (1+1): The preparation method is to pipette 50mL of the above-mentioned high-grade pure hydrochloric acid into a 100mL beaker with 50mL of water and mix well.

[0031] 1.6. Iron matrix solution (30mg / mL): Weigh 4.285 g of ferric oxide standard into a 250 mL beaker, add 25 mL of hydrochloric acid, cover with a watch glass, heat and dissolve on a hot plate at low temperature, cool, transfer to 100 mL In a volumetric flask, dilute to the mark with water and mix well.

[0032] 1.7, 1000ug / mL standard al...

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Abstract

The invention belongs to the technical field of industrial analysis, and particularly relates to a method for measuring impurity elements of Al (aluminum), P (phosphor) and Ti (titanium) in nickel concentrate ores. The method comprises the following steps of S1, preparing a sample; S2, preparing a sample solution; S3, preparing a working curve solution; S4, drawing a working curve; S5, measuring the mass concentrations of elements Al, P and Ti in the sample solution; S6, calculating the measuring results, so as to obtain the contents of Al, P and Ti in the sample. The method has the characteristics that the limited number of digestion samples in the microwave digestion process, higher cost of instrument, and high pressure (possibly over-pressure) hidden hazards are overcome, and the defectof difficulty in analysis of industrial large-batch samples is overcome; compared with the atom absorption spectrum instrument and the chemical analysis method, the operation is simple, the analysiscycle is short, the substrate interference-resistant ability is strong, the process is simple, the detection limit is low, the accuracy is good, the precision is high, the to-be-measured elements canbe simultaneously and quickly measured, and the like.

Description

technical field [0001] The invention belongs to the technical field of industrial analysis, in particular to a method for measuring impurity elements aluminum, phosphorus and titanium in nickel concentrate. Background technique [0002] Microwave digestion usually refers to the wet digestion that uses microwaves to heat the digestion solution (various acids, some lyes, and salts) and samples in a closed container to quickly dissolve various samples under high temperature and pressurized conditions. The traditional wet decomposition of samples refers to the method of dissolving various samples through common heating equipment with a certain temperature range. [0003] At present, the determination of multi-elements often uses the ICP-AES method. Impurity elements such as aluminum, calcium, cobalt, chromium, copper, manganese, magnesium, nickel, lead, zinc, etc. in nickel concentrate have been digested by microwave samples and determined by inductively coupled plasma atomic e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/38G01N21/73
CPCG01N1/38G01N21/73
Inventor 马德莉王学虎
Owner BAIYIN NONFERROUS GROUP
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