GB/T 5070.6-2002 Chemical analysis methods for magnesia-chromium refractories Part 6: EGTA volumetric method for determination of calcium oxide content
Some standard content:
National Standard of the People's Republic of China
GB/T 5070.1~5070.12—2002
Replaces G3/5070.1-5070.101585
Chemical analysis of magnesia chromite refractories2002-1231 Issued by the People's Republic of China General Administration of Quality Supervision, Inspection and Quarantine Implemented on June 1, 2003 ICS81.080 National Standard of the People's Republic of China GB/T5070.6—2002 Recommended by Gso.619s5 Chemical analysis of magnesia chromite refractories-Part 6: Determination of calcium oxide-EcTA volumetric method method200212·31 release
People's Republic of China
State Administration of Quality Supervision, Inspection and Quarantine
2003-0601 implementation
GB/T50/0.6—2002
5070 road ignition chemical analysis method is divided into the following parts: Part 1: single method for determination of burn-in delay, Part 2: determination of the amount of phenanthrene oxide by light method: Part 3: determination of the amount of emulsified lead in water: Part 4: determination of the amount of trioxide by light method: Part 5: determination of the amount of lead in water by light method: Part 6: determination of the amount of trioxide by light method: Part 7: determination of the amount of lead in water by light method: Part 8: determination of the amount of lead in water by light method: Part 9: determination of the amount of Part EA: Determination of the content of oxidizing agent: Part EI: Determination of the content of oxidizing agent: Part 1: Determination of the content of oxidizing agent by mass method; Part 11: Determination of the content of light oxidizing agent by absorption light method; Part 12: Determination of the content of oxidizing agent by absorption light method; Part 13: Determination of the content of oxidizing agent by absorption light method; Part 14: Determination of the content of oxidizing agent by absorption light method; Part 15: Chemical analysis of magnesium complex pyrotechnic materials; Part 16: Determination of the content of calcium sulfide by mass method. This part G5u. [Compared to the three changes as follows: ("preliminary", "production standard", "quality assurance control plan", "test report"), detailed provisions for sample preparation, and increased operability: added provisions for the breaking limit value, and added many usage requirements, the test interval 0.5 was changed to 0.20g when the combustion interval settled 2.
The first part: the standard conclusion flow writing current rules and store a standard guide
1/12:113 exploration standard compilation rules, etc. 4 parts: chemical separation method> the provisions of the station structure and the purchase of the inspection rules
This table is the same as the scale,
This department is the Ministry of Metallurgy and
Shanxi Metallurgical and Chemical Engineering Committee of the National Bureau of Statistics【(S:9. The draft unit: Luyang Refractory Fence Shenzhen Institute, Bottle Changjin Didong Shenzhen Institute, Six parts three gaskets people that I Hongliang offer, two dry pieces of this standard flash source, GHT07.1985.
1 Standard Field
Chemical analysis method of magnesium chromium refractory materials
Part 6: EGTA volumetric method for the determination of calcium oxide content of this part of the regulations This method specifies the method for determining the content of calcium in magnesium alloys GD/T5070.6—2002
This part is used for the determination of calcium content in magnesium alloys. Determination of mass fraction (quality fraction) (supervision--13.2 Normative references
The following documents are used in accordance with the provisions of this part of G3/T07. For all references with a date indicated, the latest revision (excluding the original error) or reduced version of these documents shall apply to this part. However, the latest revision of these documents shall apply to all references that are not included in the references. For all references that are not included in the references, the latest revision shall apply to this part
GB5070.1: Chemical analysis methods for 00% iron ore materials - Part 1, Determination of furnace reduction by calcination method
GR/A2 Shaped refractory products must meet the requirements
Laboratory glass instrument burette
G3:12805
K06 end military wave instrument energy market line capacity
812808 Laboratory glass positioner single line absorption purpose GRTI76Z
Refractory and amorphous refractory materials must be
Test with magnetic acid solution anionic acid mud mixed flux molten dilute toe acid confiscation , 7 pieces of reduced high-valent chromium, with six times the Ai installed once iron, aluminum, copper, raw materials, etc., collect part of the filtrate, add the IA standard solution, add calcein-step mud indicator when PII is greater than 1, the plastic head and its seat drop back to the wet piece through the mouse: the EA standard titration box liquid Chuan disease excess of calcium 4 reagents and hair || tt || 4.1 Mixture: Collect enough water carbon and 1 part of the tough acid fine concentrated. 4.2 Driving oxidation evaluation wave (3mm is the plastic version of the six liquid: || tt || 4.4 Six times the base solution (10g1.) || tt || 4.5 Hydrochloric acid 1-+-) || tt || 4.E pad (2+9).
4.7 2 alcohol.
4. Ethyl alcohol (1-u
4.9 oxidizing agent 161=1mn/1
Weigh 100% pre-light acid (% in 1c5101 and place in a 4C cup, add a small amount of water, cover with a special blood material slowly add the whole (4,), heat shrink well, cool and wet transfer into a volumetric bottle 4.15> with a dilution rate of 4. 10F4A standard method solution (0. C:1 m1/T.):33
CB/T5070.6—2C2
4.10.1 Preparation
Take ethylenediaminetetraacetic acid: A. or 1 beaker, cut into appropriate amount of oxygen and egg solution 4.2. Add appropriate amount of oxygen and egg solution at a good rate. Humidity in room, 1 (heart call. Through the amount, filter with water to solve the problem. 4.13.2 Standardization
Use pipette (3) to transfer Collect ml of chemical conversion report (1 pt stomach) add 3ml of this micro-chemical whole micro-chemical 12: add calcium bone through the coupon mixed with this agent 1.12 with FT4 standard limit (.. titration (commercial background H black card holder 1 to report year light disappearance, pregnancy stable red purple package is the end point, when the sales cabinet TA standard stupid liquid parts good m. extreme difference 1, calculate the average cost of the head! New ring determination 4. 10.3 Calculation of the concentration of the standard titration solution A is calculated using the formula (1): (EGTA)
wherein: The concentration of the EGTA solution is 0.9, the volume of which is 4.9 ml/liter (4.9 ml/liter) and the volume of 3 parts of calcium oxide solution consumed by the flow of 3 parts of the standard ECTA tablet at room temperature (4.10) are expressed as follows:
4.1: Calculation result is expressed in four digits:
4.12 Calcium ions are in the range of 2:1 to 0.1 g calcium ions, 0.1 g calcium ions, Example 10 x Please look at the details: mixed 4.13 transfer parts: 511230 type
full center 2
4. 15 container: G/T29054 type
5. 1 Sampling steps
According to B0 and [1 to obtain the sample.
5.2 Test preparation
Call G11/75070,1-2662 5.3 Standard formula 6 Analysis steps
6.1 Source determination times
Double sex remaining determination 2 items,
F2 sample quantity
Weigh about 2) formula single accurate to 0.01:
6.3 Empty test
Yearly repeated measurement conditions age market test,
6.4 Verification test
In the currency bar door brain test analysis heart fire type standard pool diagram 6.5 Determination||t t||6.,5,1 Test table simple feeling & 5 ~ 8 mud mixed flux: 1,1 value according to the medium, mix again cover "g mixed flux [4.1), cover ". Benefit standard crotch leave chain broken at high temperature, slide to the core of the steel melt groove" Nau whole, cool, GbzxZ.net
GH/T5070.6—2002
6.5.2 Wipe the vortex chamber with energy paper, dry with 301ml. Stimulate (4, n1 generation of the style, the difference on the top, heat without baking wear commercial heat 1 wash out and add 4. Rapid cooling to wet 6.5.3 Put a small red test lack into the liquid (.11 with hydrogenated group liquid (4.2) Neutralize most of the acid (Congo red turns blue to white): add six times H-piperidin (4. until the sediment appears red or red), add 21 ml, keep warm at about 7.5°C, filter paper, wash with hot 1-2 times 4-6 times with benzene (1.0ml), filter paper, and filter with 0.5 ml of water. 5. Beat it and stick it on the outside of the film tightly. .. Dust at night. 5. Heat the water to dilute it. 4. Rinse it with a wave level, use water to wash it until the annual accumulation is about 150al. It will be cooled to room temperature. 6.5.6 Use hydrogen atmosphere potassium solution (4.2 to neutralize the part of the human ear and add 10
6.5. Filter it again at medium speed, filter it twice, cool it to wet. Dilute it with water to the scale, check evenly, this wave is used for the test rate of the people to create a common promise
6.5.8 transfer 100 years of total mass fraction> low%. Take .21m1. Test reduction set 10 "grid 5 = [ask for the band drop.11m.-respect glue drop wave (1.) according to the calcium content of the A standard titration melt wrinkle 1. pass the original 5ml~1um record the error number return 12 [straight bottle chemical inhibition solution 14,, change bone 3rim-3mi n Add a small amount of calcium green H mixed with the indicator book also represents the standard concentration: clear to the standard I show a stable green is difficult to work well over the hill" about (thank you for the overall effect, add a small amount of mixed indicator (me.12), use FTA standard full production liquid (4.01 in the display package)
7 analysis result calculation
7.1 complex cargo volume fraction (()) number according to the formula (2 calculation: etC - ls1V I V-V3 -Vt eM
, - the volume of the FTA standard titration solution (1,000 T/year is 1T:V. The product of the calcium oxide H solution a.>, the unit is m;; the EGA standard solution (4.10) is the product of the A standard solution (1.1,000 T/year) in the EGA standard solution (4.10). The product is m.:.2J
The accurate value of the liquid concentration of the ETA standard solution (4.1>, converted into coulometers per liter (mnl,T! The mass efficiency value obtained from the outside is:.t.
The concentration of the calcium oxide standard solution is converted into coulometers per liter (mnl,T! The mass efficiency value obtained from the outside is:.t.
The concentration of the calcium oxide standard solution is converted into coulometers per liter (mnl). (The correct value of the coulometer is g/year (/m1) (m5. 079) 7.2 The analysis results are as follows: 1. The analysis values of the analysis under the conditions of the above-mentioned conditions are as follows: 2. The analysis results are rounded to two decimal places. If the company concerned has not made any request for the approval of the company, the position of the correction can be adjusted to the allowable difference between the first and the second test results obtained under the replication system 1. The values of the test results obtained under the replication system 1 are not suitable for those in Table 1. 2. The analysis results are as follows: 317 is rounded to two decimal places. If the company concerned has not made any request for the approval of the company, the position of the correction can be adjusted to the allowable difference between the first and second test results obtained under the replication system 1. The values of the test results obtained under the replication system 1 are not suitable for those in Table 1. 317 is as follows: 2. The analysis results are as follows: 317 is rounded to two decimal places. If the company concerned has not made any request for the approval of the company, the position of the correction can be adjusted to the allowable difference between the first and second test results obtained under the replication system 1. 317 is as follows: ...
1.u1--3. x
.1--1o. uu
9 Quality Assurance and Control
9. 1 Clinical Test as Required
9.2 In most cases, the concentration of the specified drop wave should be re-calibrated once every month: if the temperature rises by more than 1rT within two months, it should be re-calibrated in time.
10 Test report
The test report should include the following contents: To be reported:
Test column name:
Analysis results:
Use weighing (GT5-
The difference in the analysis steps (if necessary)! During the test-observation of abnormal phenomena (if necessary) Test Phase II
Responsible for implementation,
. -11.
1. Normative Appendix?
Acceptance analysis value procedure
Conduct x2
Relevant sL.2
GB/T 5070.E:2002
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