This standard specifies the determination of sulfur content in zinc concentrate. This standard is applicable to the determination of sulfur content in zinc concentrate. Determination range: 20.00% to 40.00%. GB/T 8151.2-2000 Chemical analysis method for zinc concentrate Determination of sulfur content GB/T8151.2-2000 Standard download decompression password: www.bzxz.net

1-8 73.060
National Standard of the People's Republic of China
GB/T 8151.2—2000
Chemical analysis method of zinc concentrate
Determination of sulfur content
Methods for chemical analysis of zinc cunrenlrates-elerminalion of sulfur content2000-02-16 Issued
Implementation on 2000-08-01
National Quality and Technical Supervision Bureau
GB/T5151.2---2000
This standard is a revision of GB3/112—387 Chemical analysis of light concentrate by combustion neutralization titration. The main contents of the standard are as follows:
GIT1.1-33 International standard chemical properties guide Unit 1: General description and expression of standards Part 1: Summary of standards
CB:T1.1-88 Standard chemical analysis method standard G1467-2978 Metallurgical product chemical analysis method standard general provisions G[/T145-1333 Metallurgical material hydrogen, oxygen, grinding, crushing and separation method /T1743333 Metallurgical product chemical analysis method standard This standard is effective from the date of implementation, 6B/T81:1.21987. This standard is proposed by the National Bureau of Development and Reform of China. This standard is under the jurisdiction of the National Nonferrous Metals Industry Bureau. This standard is drafted by: The National Nonferrous Metals Industry Bureau. This standard is drafted by: The National Nonferrous Metals Industry Bureau. This standard is drafted by: Zhou Tongyou, Zhu Wenhong, Ji. 1 Standard of the People's Republic of China National Standard Chemical Analysis Method for Zinc Concentrate Determination of Sulfur Content Melhads Tor This standard specifies the determination of sulfur content in sulfur concentrates: Standard selection of sulfur concentrates, determination range: 2J. Method 4U. Method 2 Summary of the method GR/T B151.2—2033 311.2-1987
The sample is burned in a stream of oxygen. In the absence of oxygen, the acid salt decomposes into trioxide value. The amount of sulfuric acid is determined by the amount of red and substituents of each oxygen. The standard sodium hydroxide is used to determine the concentration of sulfur. The standard sodium hydroxide is used to determine the concentration of sulfur. The technical conditions stipulate that the determination of the coexisting elements is obvious. 3 Reagents
3.1 Sodium hydroxide.
3.2 Silica gel.
3.3 Oxidizing agent, powder.
3.4 ​​Lead powder (.%)
3.5 Sulfur (, 1.84 /L)
3.6 nitrate (1-). Premium grade
3.7 Nitrate 11-37, premium grade.
3. High manganese dioxide-sodium hydroxide solution Weigh 3. Potassium hydroxide in 1CCm of water, add 1Cg of oxidizing agent 5.! Dissolve, wash gas
3.9 Mix indicator: base monitor 1.6) and acetone red ethanol solution 1.2/1.), mix in equal volumes before use. 3,10 Overload absorption: 1. The solution contains 50 ml. Hydrogen peroxide [G/, add 1mL of the agent (3.9) and titrate the solution with sodium hydroxide standard! 3. 2) sulfuric acid (1-191 adjustment rate children's state green (limited to use within one week 3:11 sparse lead can be used to test the preparation of || tt || weigh 20g of the price (> 99.%> in a 500rr:1 beaker, add 3)r:. Nitrate practice (5.7) solution, get the reverse complete operation method In addition to the floating of taenan, add 20r. acid (1.6) and settle for 2. After that, use medium-speed quantitative paper to live, open the request and wash to the middle, put it in a small box, and burn it for 1 hour. Take out the cold acceptor from the rack, wait for the room to be full, take out the grinding ball, and then put it in a Muffle furnace to burn for 1 hour. Take out the white, and put it in the burner as the standard. 3.12 Hydrogen, standard titration solution (about (.1ml/). 3.12.1 Preparation: Take 7L hydrogen hydride (CU/L) and add 1L of empty material. Boil and cool it with about 1L of water. Select the national quality and technical supervision kitchen 2000-02-16 approved 2000-08-01 real bottle
GB/T 8151.2—2000
3.12.2: Weigh 0.40008 standard reagent (3.11) J, add 56% oxide (in %), and calibrate according to the standard method. Record the volume of sodium hydride by titration in the following format: (1) FXC.ICE?
Where, the standard titration liquid is used for the collection of the system, - Weigh the mass of lead monoxide and determine the volume of the standard oxidized liquid in the tube, mV---weigh the volume of the standard sodium hydroxide solution, L; 0.1C5?.-The magnetic energy coefficient of lead monoxide conversion is: (
Take the average value of three calibration results to determine the coefficient. If the difference between the two calibration results is greater than 3.2352p/r:L., recalibrate. |tt||4 Instrument
With temperature tube type electric protection: installation temperature 10℃, use temperature 1250%.4.1
4.2 Fixed system installation pressure chart 1,
1-oxygen version 2-release valve 3-if the energy meter 3】L/mm, on the sea high test recharge oxygen sodium swim (3.8: 1% of the surface high]: 5-wash gas rent 1 filter acid free) liquid level high 2/3 new high 46-two baking sheet energy pack silicone:: 7- High-quality general electric, 3-belt-shaped inspection (internal bell 18l external diameter 22 total 600-boat (m complete in average culture 21c: 0m confiscation: 11 run Yu replacement: 12-no degree control tube: 13--control aldehyde current: 1+-replacement rubber required, 15 special acid belt: 5 one hole gas release section with ICnl. Money according to the diagram of the bottom of the small hole) diagram? Combustion neutralization gradually determined by the legal sulfur equipment camp pure 5 sample
5.1 sample should pass (.am span. www.bzxz.net
CB/T 8:51.2--200C
5.2 The sample is pre-dried at 1G515 for 1 hour and placed in a low temperature environment to cool to room temperature. 6 Analysis steps
6.1 Sample
Weigh 10 samples and sieve to 0.600g
Single half of it is measured, 6.2 Empty test
Same sample as white test.
6.3 Determination
6.3. 1.1.2.1.2.2.2.1.2.2.2.3.1.3.3.1.3.2.2.3.1.3.2.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.2.3.3.3.4.4.5.6.6.6.6.6.6.6.6.6.6.7.7.8.9.10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.18.19.20.21.22.23 ... The upper 0.2G1.7t, after absorbing 5mn, the flow rate of chlorine is between 0.40-3.501/min and the standard is adjusted. The standard sodium hydroxide solution (3.12) is used to titrate the sample. The analysis result is expressed as follows:
S%) -- F.- > x 100
Where: Product -- the titration number obtained by titrating the standard fluoride solution S/L: V -- the volume of the standard sodium hydroxide solution consumed in the titration test, V. The volume of the standard fluoride solution consumed in the titration test is r: [ma -- the mass of the sample.
The result is expressed as a decimal.
8 Allowable error
The error of the experimental space analysis result should not exceed the net error listed in the table. 1
23. 5--30, 00
GGQ-, 56
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.