This standard specifies the determination method of iron content in zinc concentrate. This standard is applicable to the determination of iron content in zinc concentrate. Determination range: 2% to 20%. GB/T 8151.3-2000 Chemical analysis method for zinc concentrate Determination of iron content GB/T8151.3-2000 Standard download decompression password: www.bzxz.net

1LN73.060
National Standard of the People's Republic of China
GB/T 8151.3-2000
Chemical analysis method of zinc concentrate
Determination of iron content
Promulgated on 2000-02-16
Implemented on 2000-08-01
Promulgated by the State Administration of Quality and Technical Supervision
GB/T 8151. 3—200C
This standard reaffirms the content of G/811.3--937 new method for chemical analysis of zinc concentrate: 2A titration method! This standard complies with: (13/71, 1-1193 standard normalized chemical analysis method standard compilation GB/T 1467-97 metallurgical product chemical analysis method and the total number of consecutive 5 and 17.12-1S98 metallurgical product chemical analysis method standard. This standard is effective from the date of implementation. Company replaced 31.51, 7·1987, this standard popped up the national package industry week proposed: this standard towel belongs to the nonferrous metal protection.1 industry standard certification quality research institute: this standard is responsible for the factory.
This standard is the washing mountain water mouth shovel body bureau, production island law, start-up, this standard is mainly responsible for the start-up: change the sect, product Jiafu, Li Fei
1 scope
National Standard of the People's Republic of China
Chemical analysis method of zinc concentrate
Determination of iron content
Metharls This standard specifies the determination method of zinc content in zinc concentrate. This standard is suitable for the determination of zinc content in sample concentrate. The determination range is: 2. Method
GB/T 151.3-2000
Replace GB7 3151.3-1
The sample should be dissolved in salt and aldehyde, evaporated to nearly 1%, add a small amount of sulphuric acid to dissolve the salt: keep the volume in water, use the salt solution to make a volume of 120L, maintain the temperature at 5-92°C, use sulphonic acid as the reagent, and titrate with NFT4 standard solution until the liquid changes from red to yellow. 3 Reagents
3. 1. Hydrogen nitrate (11):
3.2! .19g/)
YongJ. /mL]:
Salt (11):
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3.8 Washing: Dissolve 3.11 with 500ml water, 2gm chlorine water (.1.1), mud. 3.9
Sulfosalicylic acid solution (1C3g/1.).
3.107. Nitrogen nitrate (2-nitrogen nitrate) solution 3.10.1 Preparation of standard solution: Weigh more NETAC.HN0N2HQ: in a cup, 100ml of white heat and melt, cool to room temperature, weigh 1 000ml, dilute with water to the concentration of + symptoms, and calibrate after two days. 3.10.2 Calibration
3.10.2.1 Oxygen treatment of whole wire: Cut some gold wire (>9.95> into small pieces [less than 8.11 μm each). Put it into a 1-3% dilute nitric acid bath for 1.2 ml, soak it in 1% anhydrous ethanol for 1.2 m:m, take it out. Use a fiber-optic reverse absorbing agent and immediately take it out. 3.10.2,2 calibration; weigh the treated gold wire to 0.000% g accurately. g were placed in a 30 mL baking cup and 20 mL nitric acid was added to make it dissolve at a rate of (1-1). After heating, 16 mL of salt (%.2) was added to the water to make the blood and the card to be added to make it dry. 1 mL of the solution was dissolved in (3.2) until it was about 120°C. It was diluted with oxygen (3.7°C) until iron oxide appeared. Then 1 mL of 1% acetic acid (5°C) was added until it was about 120°C. After that, 1 mL of ethanol was added to make it dissolve. The solution was determined by NETA standard. The liquid changes from red to yellow as the end point, the national quality and technical supervision encouraged 2CCC-02-16 approved 2000-08-01 implementation
with the standard to do the test.
Gn/18151.3-2933
control formula) calculate Nz, ETA standard from the standard system effect: F
formula, F——N industry, EYIA rely on accurate titration liquid to shoot full determination coefficient · J/ml! -—- Qin finally took the single, g;
V--- standard end time dissolution Ns: LDTA standard dissolution rate starting mLV, standard white test liquid dissolution Na: EISTA standard lubricating liquid use -ul. 1
The average value of the calibration results collected once is the full coefficient, and the range of the inter-calibration results is not greater than (1. If not, new calibration:
4 Sample
1. 1 Standard 0. 1m milk sieve
4.2 Price war pass at 1036 drying!, see the cooling rate of the ten devices 5 Analysis steps
Weigh the sample according to Table 1, accurate to n. 00 1 B Table 1
3. 00-26. 60
Carry out "European determination" independently, and combine it with the scientific mean value 5.2 Air test
Accompanying the scientific air test
5.3 Test
5.3.1 Put the sample: 5.1) 3n0ml. In a baking cup, add a little water to wet it. Add 10ml. Sodium (3.2) acid and dissolve it at low temperature for 5min, add 10L nitric acid and continue to dissolve it at low temperature. If the temperature drops to below 2~3r1. The box is loaded with 2.2, wash the surface and cup with water, and heat to dissolve the salts. Then add water to a volume of 70~5 cc, neutralize with hydrogen water (3.1) until the hydroxide precipitates completely, then add 3 m excess. Heat for 3-5 rcm, remove, add 3 m hydrogen water (3.4), filter by rapid method, wash with hot water and filter paper once, then wash with water each time, 5.3.2 remove the finger pad (3.5) and release the precipitate (5.3.1) on the ticket, then wash with water and hydrochloric acid (3.5) alternately. The paper is colorless: the solution is evaporated at the selected place To 1~2, add 120ml water, neutralize with water (3.7) until a short car washing flow appears. Add [0ml salt (4.), heat the stem, collect, such as into 1n full base salicylic acid solution, use NFDTA standard titration solution to titrate until the red color in the solution turns to yellow as the end point, 6 Expression of analysis results
ratio (2) calculate the white content of Lai:
Wu Zhong: F
FVD100
N.EITA standard titration test The titration coefficient of iron is s/mL. The titration coefficient of iron is s/mL. The product of the sample dissolved in the industry is the product of the IA standard. L: The product of the filter flow Echuan A standard is determined by the agreed air flow test: mL: (2) The test flow rate is . The result is expressed to a decimal. The difference between the analysis laboratories is not large. The difference is listed in Table 2. Analysis, c3-15, or n. ucl15. c? s, nn- no
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