GB/T 5070.1-2002 Chemical analysis methods for magnesia-chromium refractories Part 1: Gravimetric determination of loss on ignition

This part of GB/T 5070 specifies the method for the gravimetric determination of loss on ignition. This part is applicable to the determination of loss on ignition in magnesia-chromium refractories. GB/T 5070.1-2002 Chemical analysis methods for magnesia-chromium refractories Part 1: Gravimetric determination of loss on ignition GB/T5070.1-2002 Standard download decompression password: www.bzxz.net

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National Standard of the People's Republic of China
GB/T 5070, 1~5070. 12-—2002 Code: b0r.15c7.1-! 8
Chemical analysis of magnesia chromile refractories2002-1231Promulgated
2003-D6-01Implementation
People's Republic of China
National Quality Supervision and Inspection Standards
ICS 81.080
National Standard of the People's Republic of China
GB/T5070.1—2002
Generated G1yTF070.119s5
Chemical analysis of magnesia chromile refractoriesPart 1:Determinaliun uf loss on ignition-Gravimetric method2002-12-31 issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implementation of 200306-01
GH/T 507.1—2002
GH/T 507.1—2002
GH/T 507.1—2007 Methods of chemical analysis of pyrotechnic materials 3 parts: Part 1: Determination of combustion quality by the method of emulsification; Part 2: Determination of carbon oxide layer by the method of optical microscope; Part 3: Emission method; Part 4: TA volumetric method for determining the amount of calcium oxide: Part 1: Anglin Zhongtong injection method for determining the amount of calcium oxide in the second state of the titanium industry: Part 2: GTA volumetric method for determining the amount of calcium oxide: Part 3: CDT volumetric method for determining the amount of magnesium oxide: Part 4: EDTA volumetric method for determining the amount of oxide chain; Part 5: The content of the second chemical complex in the first volumetric method: Part 6: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 7: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 8: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 9: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 10: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 11: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 12: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 13: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 14: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 15: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 16: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 17: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 18: Flame atomic warm light absorption method for determining the amount of potassium oxide; Part 19: Flame atomic warm light absorption method for determining the amount of potassium oxide The first part of this part is the official version of salt (1/T5070.11S85 money i: firewood wood pyrolysis method single quantity method material about burning reduction 3. This part is different from (H/070,119) as follows: "energy", "normative references", "quality assurance and selection", "test report", "test column preparation: detailed maintenance plan, Sichuan "can be uniform, the score value is adjusted for the number of items, the score is calculated using other regulations: extreme (! 1 standardization guide! Part 1, standardization introduction and compilation Rules (520001.1-203 standard box writing rules - Part, chemical analysis method of the current conclusion of the selection of the overall selection.
This part of the appendix A requirements of the current normative section.
A small part of the original metallurgical industry is still based on the
This part is issued by the National Technical Committee for Standardization of Disaster Relief Village Tree 1>T: This part starts with a single pull: Luo on the fire material demarcation institute. This part of the line to start Apple: Department of hot red frame dedication city Gu Qiling This part represents the historical drink and this release has the back wash; -rB:T 7.1-S5.
1 Scope
Methods for chemical analysis of refractory materials with magnesium and chromium content
Part 1: Gravimetric determination of loss on ignition
Part 2: Determination of mean ignition loss in refractory materials using dry mass 2 Normative references
GH/T50r0.1—2002
The following documents are incorporated herein by reference in their entirety by reference. Note: This document shall not be used without the approval of the relevant authority and all subsequent amendments (excluding errors) or revisions to this document. However, the latest version of this document shall apply. For all references to the date of reference, the latest version applies.
GT:THT?a numerical trend,
(G13/14325 pre-shaped refractory product push sample heat collection GH:1176: refractory raw material amorphous refractory joint ladder 3 Wan treatment
sample at 195 soil 50 average purchase amount, based on the loss of bucket calculation burning amount 4 collector
4.2 platinum site city or research Shenzhen Ying (50 plus 1.).
4.3 white visual control source drying range
4.4 high temperature furnace: the highest use temperature 111. enough to control the price of the electric protection 5 samples
5. 1 Steps
Assuming GE/T10: and G/T1717 are used for the test case. 5.2 Sample preparation
5.2.1 Crush the laboratory standard carbon to 7m or less, and divide it into 723g according to the internal method. 5.2.2 When there is a sampling agreement or the product form is limited, it is impossible to take the laboratory product of 23)2. In addition, 52.3 Divide the sample into about 10:10m or less according to the method of dividing, and keep at least 23 samples of the sample with a particle size less than 0.0m for spare. 5.2.4 The sample should be produced before 10-116h, and the cooling rate in the dryer should be studied. GB/T5070.1-2902
5 Analysis steps
6.1 Number of measurements
Measured in the case of gravity.
6.7 Sample weight
Weigh about 1g, 0.0001g
Put the sample in a three-stage constant temperature belt (C.2) and heat it to 60°C. Keep it warm for 1 minute and then put it in a dryer at a low temperature and heat it again (m each time). When the machine weighs 1, what is the difference between the two burning weighings? When the amount of loss is 1, the difference is the constant value. 7.1 Calculation of the analysis result
7.1 Loss on burn and use the mass fraction of the loss on burn to verify. The value is expressed as 5, and the following formula is used for calculation: re loss on burn m
The effective value of the mass of the sample and the loss on burn, the unit is grams) m
The effective value of the mass of the sample and the loss on burn, the unit is grams: The mass of the sample, the unit is grams (B) 7. Whether the analysis result is valid, first check whether the analysis value of the standard homogenate under objective conditions is consistent with the standard value. When the difference between the analysis value of the standard field and the standard value is within the allowable error, then test 7.3 When the difference between the two valid analysis values ​​of the obtained sample is not greater than the allowable difference specified in the technical specification 1, the arithmetic mean shall be taken as the most complete analysis result. Otherwise, the technical specification A shall be completed and the number of points shall be increased. 7.4 The result obtained shall be rounded to 1/T310. If the supply contract or relevant standards have requirements, the number of digits required shall be adjusted.
8 Allowable rounding
The difference between two independent measurements obtained under repeatability conditions shall not be greater than the allowable difference listed in Table 1. Table 1
,51.-:.00
1. >1. - 5, on
5. .4c. c3
9 Quality assurance and control
Under high-quality conditions, the same type of standard materials shall be tested together with the test materials. 10 Test report
The test report should at least include the following contents: 4
Related information
A commissioning unit:
. Sample name
Test results,
Standard coordinates GT3:5673.-—2002)
Consistent with the specified analysis steps
Regular phenomena observed in the test (if necessary): Test date,
GB/T 5070,1—2002
GA/T 5070.1—20C2, the design benefits of the first-order tolerances listed in the table "(Interesting Appendix)" and the acceptance cutoff value procedure are as follows:
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