GB/T 5069.9-2001 Chemical analysis methods for magnesia and magnesia-alumina (aluminum-magnesium) refractories - Determination of titanium dioxide content by hydrogen peroxide photometric method

This standard specifies the method for determining the amount of titanium dioxide by hydrogen peroxide photometry. This standard is applicable to the determination of titanium dioxide in magnesium-aluminum (aluminum-magnesium) refractory raw materials and products, with a determination range of 0.50% to 4.00%. GB/T 5069.9-2001 Chemical analysis methods for magnesium and magnesium-aluminum (aluminum-magnesium) refractory materials Determination of titanium dioxide by hydrogen peroxide photometry GB/T5069.9-2001 Standard download decompression password: www.bzxz.net

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Kitchen Standard of the People's Republic of China
CB/T 5069.1-.5069.132001
Chemical analysis of magnesia and magicsia-alumina refraciory malerials2001 - 12 .17 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2002-05-01 Implementation
GB/T6069.92001
This international standard is aimed at most refractory materials containing magnesium aluminum (lead magnesium) with a chemical content greater than 0.50%, and on the basis of the determination of titanium dioxide in the ansane photometric method in G/T09.7-198, a high-sensitivity spectrophotometric method with a micro-disc is used. This revision of the chemical analysis method for magnesium-based refractory materials is also applicable to the chemical analysis methods for magnesium and magnesium aluminum (zirconium-based) refractory materials.
This standard includes 13 sub-standards under the general title of the chemical analysis of iron materials:
determination of the amount of oxidizable substances by blue light method:
determination of the amount of silicon monoxide by electrophotometric method:
determination of the amount of ferrous oxide by flame irradiation method:
determination of the amount of chromium by chromium ionization method:
determination of the amount of EDTA by chromium ionization method:
determination of the amount of ferrous oxide by hydrogen peroxide:
determination of the amount of calcium oxide by absorption spectroscopy:
determination of the amount of calcium oxide by complexometric titration:
determination of the amount of oxidizable substances by flame absorption spectroscopy:
determination of the amount of potassium oxide by radioactivity spectroscopy. This standard was proposed by the National Bureau of Metallurgy and Industry. This standard is also the National Technical Committee for Fire Material Standardization. The drafting unit of this standard is Geyang Fire Material Research Institute, which is the Ministry of Education. 3
National Standard of the People's Republic of China
Chemical analysis method for magnesium and magnesium-aluminum (aluminum-magnesium) fire materials Chemical aaaalysik nf magneaia and magneslaalumina refractoriesmaterialsHydtogenperoxidephotapetricimethad for determination pf tilanlum dioxide conlent1Scope
This standard specifies [Method for determination of titanium dioxide by hydrogen peroxide photometric method]: G8/T 5069. 9—20GT
This standard is intended for the determination of the content of carbon dioxide in refined products with a determination range of: .51%--4.51% 2 Reference standards
The referenced standards listed below are valid at the time of publication of the standards, and all standards will be revised. The parties to this standard shall use the latest edition of the following standards: GB/2007-8 Sampling and preparation of bulk products , 59.1-2001 Magnesium and magnesium aluminum refractory materials GE/T817U-1987 numerical chain determination method
G[0325-2001 Standard for sampling and acceptance of refractory products 3 Method Summary
Test the melting point of the mixture of end-boric acid and the absorption rate of the yellow station in the acidic medium, the absorbance at wavelength 0,
Three Yan chemical money's color dry anti-coin itself eliminates the air. 4 Reagents
4. 1 Standard absorption rate 2 parts of especially small fake acid and 1 part of blood evening grind finely, send hook 4.2 Base age 15).
4.3 Acid (: +1).
4.4 Hydrogen peroxide (1 + 4)
4.5 Cobalt oxide standard solution (containing Ti0.2 mg/mL! Weigh 0.100 ml of cobalt dioxide (9:9%), first burn it at 1000°C for 1h, then cool it to room temperature in a desiccator. Add 5 g-12 potassium peroxide in a wet furnace and gradually heat it to ~50°C. Dissolve the sodium hydroxide in 2M In1 solution with acid (1 + 4) at low temperature, cool it to room temperature, transfer it to a 5 mL volumetric flask, and sieve it with sulfuric acid (5 + 9> to the scale. Spectrophotometer,
Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on 2002-05-D1. Implementation
6 Sample
(B/T 5069. 9- 2001
Prepare the test strip according to H/10525 and B12007. 6.1 The sample should be 0.88 mm in size. 6.2 Before analysis, place the sample in a desiccator at 165°F~11°C for 2 hours and cool to room temperature. 7.1 Determination of quantity
For analysis, weigh 2 portions of the sample. 7.2 Take cg of the sample from the test plate and weigh to the nearest .n1g.
7. 3. The same type of standard materials shall be tested together with the non-standard materials. 7.4. Determination 4.1 Place the sample 17.2 in the mixture with 2 platinum agents (4.1) and cover the mixture with 1.2 platinum agents (4.1) and place them at 100~0 high temperature to 100~110 (molten m~1) and take a quick turn to make the material uniform on the inner wall of the vortex. , cool 7.4.2 filter paper, put in 200mL of 1 ml hydrochloric acid (1.2), heat until the dough is clear, wash with water and cool to room temperature. Transfer to 110ml volumetric flask, dilute with water to scale, take 200ml of 7.4.3 and place in two containers: add 5ml hydrogen peroxide (4. 4). Dilute 1 portion of this sample with water to the mark, add 3 cm of warm water to the spectrophotometer at 410 m of full length, and measure its absorbance with the sample without hydrogen or hydrogen as reference. 7.51. Draw the curve
Take 0, 1.00ml..2.00ml..3.0Uml., 4.CCmL, 5.00mL6.00cal. dilution standard solution (4.5). Take 0ml, 5ml, 5ml, 10 ... =
The carbon dioxide number obtained by the working curve is in units of one-minute sample quantity, in units of.
8.2 Acceptance of analysis value
According to the provisions of GR/T5059.120017.2. 8.3 Calculation of the final result
The arithmetic mean and the minimum value of the mass analysis result shall be rounded to the nearest decimal point according to GH/1. The allowable difference
The difference between the analysis result and the sample shall not exceed the allowable difference listed in 1. 36
c. 53~-2. nn
2-2.c3~J. (n
(B/T 5069. 9—2CC1
The sample is allowed to be
±2 14
The sample is allowed to be registered as
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