This standard specifies the method for determining the nickel content in zinc concentrate. This standard is applicable to the determination of nickel content in zinc concentrate. Determination range: 0.003% to 0.050%. GB/T 8151.14-2000 Chemical analysis method for zinc concentrate Determination of nickel content GB/T8151.14-2000 Standard download decompression password: www.bzxz.net

[C573.555
National Standard of the People's Republic of China
GB/T8151.14—2000
Chemical analysis method of zinc concentrates
Determination of nickel content
Methods for chemical analysis of zinc concentrates-Determination of nickel content2000-02-16Published
Published by National Quality and Technical Supervision Bureau
Implementation on 2000-08-01
GD/TB151.14—2000
The standard was first formulated by the Ministry of Industry and Information Technology.
This standard complies with:
GB/T 1.1-1993
Guidelines for Standardization Section 1: Rules for the origin and form of standards Section 2: Basic provisions of standard compilation
G3/T 1.4-1SE8
Guidelines for Standardization Section 3: Chemical analysis methods GBT14571ST8 General provisions of chemical analysis methods for metallurgical products General rules for chemical analysis of metallurgical products GB/-7728—1987
GB/T17433-1$88 Basic techniques for chemical analysis of metallurgical products This standard is provided by the National Nonferrous Metals Industry Bureau. Unstandardized entries A are indicated.
This standard is provided by China Nonferrous Metals Industry Standard Quality Research Institute and China National Nonferrous Metals Industry Standard Quality Research Institute. This standard is provided by Huzhou Zinc Factory.
This standard was drafted by Xing Guanye Li!
Who is the main drafter of this standard? Liu Li, the principal investigator, is responsible for the description of the standard.
National Standard of the People's Republic of China
Chemical analysis method of zinc concentrate
Determination of nickel content
Methads for chemical analysis of zinc concentrate
Determination of nickel content in zinc ore This standard specifies the determination method of nickel content in zinc ore. This standard is applicable to the determination of nickel content in zinc ore. 2 Method requirements: GB/T8151.14—200C: The sample is dissolved in salt, nitric acid and sulfuric acid, and is separated from the elements zinc and iron by extraction with chloroform and the resulting complex with butane. In a hydrochloric acid medium, an absorption light amplification instrument is placed at 2320 ml. The absorbance of the source is rapidly adjusted with air. 3 Reagents: 3.1 Difluoromethane.
3.2 Hydrochloric acid (pl, 1 s/m1.],
3. 3 Acetic acid (pl, 12 R/ir:T.).
3.4 ​​Sulfuric acid (pl.81/ml).
3,5 Ammonia water (.50 5/m.).
3.5 Hydrochloric acid (11).
3.7 Hydrochloric acid (1 120).
3.8 Nitric acid (1 .1).
Hydrogen water (1).
Ammonium hydroxide (20/L).
Phenol to ethanol).
Butyl-isothiazolinone solution (1/L),
3.13 Nickel standard solution, weigh 50c0g of gold-net nickel (99.9%) in a 253 cup, add 10mL of sodium hydroxide (3.5mL), heat to dissolve completely, cool, transfer to a 1000mL volumetric bottle, mix with water and add 500uR of nickel in 1L of this bath.
3.14 Standard solution ：Take 10.00ca of standard stock solution (3.13) in 100ml of argon, add E:1-hydroxyethyl (3,5)+ with water to dilute to a certain pressure, mix, and dye. 4. Required
Atomic absorption spectrometer, with hollow cathode lamp: National Quality Supervision Bureau 2000-02-16 approved 2000-C8-01 implementation
GB/T E151.14—2000
In the instrument working conditions, the atomic absorption spectra measured in the following measures shall only use the average core: The precision shall not exceed .5 μm when the liquid is in the same range as the sample: The standard deviation shall not exceed .0% of the average absorbance when the high-precision standard liquid (the standard liquid must be full after the standard liquid) is measured once. The standard deviation shall be 3.55% of the highest concentration of the standard melt. The working line is linear, and the working point is divided into five sections. The ratio of the absorbance difference of the highest section to the absorbance difference of the lowest section shall not be less than 0. 7.
The instrument working record is shown in Appendix A (the record is for reference only). 5 Test selection
5.1 The sample is passed through a 0.100mm hole.
5.2 The sample is cooled to a low humidity in a desiccator at 105°C for 1h. 6 Steps
6.1 Test material
Weigh the test material to an accuracy of 0.0001g. Table 1
Content
4.u03--.Center
D. DJO3. DEU
Carry out two independent determinations and take the average value. 6.2 Blank test
Follow-up test: Carry out a blank test.
6. 3 Determination of the total liquid content of the sample 6.3.1 Place the sample (6.) in a 1 ml beaker and shake with a small amount of water. Add -3 1 mL of hydrochloric acid (3.2): add 5 mL of nitric acid, add natural solution and make it 2-3 mL. Add 1 mL of sodium sulfoxide, heat to nearly 30 °C and add 3 mL of ethanol. Wash the surface and walls with a little water, remove the solution and cool. Transfer the solution to a 20 mL separatory funnel and add 1 mL of ammonium citrate, 2 mL of phenol or 7 mL of water to make it 6.3.2 Add 1 mL of ammonium citrate, 2 mL of phenol or 7 mL of umbilical cord suspension. Neutralize with oxygen until a slightly red color appears and add an excess of 4 mL of ethanol (pH about 9). Mix for 5 min. 6.3.3 Add 1 mL of trifluoroethane and stir for 2 min. Let the layers separate and transfer the organic phase to another 601 mL separatory funnel. Add 10 mL of chloroform to the aqueous phase and shake. ain, statically separate, combine the organic phase and discard the solid phase. 6.3.4 Add 15ml hydrochloric acid a.7) to the organic phase and incubate for 1min, invert and separate, discard the organic phase, transfer the aqueous phase to the corresponding bottle according to Table 1, add water to deionize, mix and filter. 6.3.5 Use air 7000 to collect the spectrum at 232.0m, add water to the filter, measure the absorbance of the test filter, subtract the absorbance of the blank solution with the sample, and draw a line on the working curve. E.4.1 Transfer 0.5, 1.00), 3, 1.00, 3.004.C0, 5, 0 mT. The standard solution is respectively transferred to a group of 35 ml separating funnels and placed at 30 t:l. The following is carried out according to 6.3.2.~6.3.6.4.2 Under the same conditions as the sample dissolution determination, the normal aurora change of the standard is subtracted from the aurora intensity of the zero-degree solution, and the nickel concentration is used as the horizontal axis and the absorbance is used as the negative axis to draw a working curve.
Expression of analysis results
According to formula (1), the total absorption of the tube is calculated:
GB/T 8151.14—2000
Ni%)=X
Formula: c—the degree of purity obtained from the work certificate, /m: the total amount of nutrients, m
7n: the mass of the material·R.
The result scale is smaller than the potassium content by 0.310%, which means the whole number is a decimal point, & the allowable difference
The difference between the analysis results of the test station should not be greater than the allowable difference listed in Table 2, Table 2
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CB/T 8151.14-2000
(Appendix to the suggestion)
Instrument working conditions
Expenses Working conditions of WFX-C type original absorption light multiplier for measuring the quantity of the product as shown in Table AI Table AI
Monochromator oil·A
Burner separator
Air control panel
B Flow control panel
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