Method for measuring carbon content in high-carbon ferrochrome by infrared absorption method
An infrared absorption, high-carbon ferrochrome technology, applied in the field of chemical analysis, can solve problems such as the lack of ideal flux ratio, achieve the effects of stabilizing carbon analysis results, reducing carbon release speed, and improving fluidity
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[0039] Example 1
[0040] Weigh YSBC37648-10 high-carbon ferrochromium standard samples of different masses with an electronic balance, accurate to 0.1mg, and place them in a pure copper carbon-sulfur ceramic crucible weighed accurately on the balance beforehand, mix them, and then cover Tin: Tungsten=1: 7 Mix flux 1.500g±0.005g, shake the crucible gently, then place the carbon-sulfur ceramic crucible on the high-frequency infrared carbon-sulfur analyzer to determine the carbon content, operate according to the instrument manual, parallel The YSBC37648-10 high-carbon ferrochromium standard sample was measured twice, and the measurement results are shown in Table 1.
[0041] Table 1
[0042] Weighing amount / g Measurements% 0.05008.35 8.30 0.08008.42 8.41 0.10008.47 8.45 0.01208.40 8.44 0.01408.24 8.20 0.01508.30 8.26
[0043] Note: The analysis sample is YSBC37648-10 high-carbon ferrochrome C% is 8.49% GB / T 4699.4-2008 "Determination of carbon content of ferrochromium and silico...
Example Embodiment
[0045] Example 2
[0046] Weigh 0.2500g YSBC37648-10 high-carbon ferrochrome standard sample with an electronic balance, accurate to 0.1mg, and place it in a crucible containing 0.300g±0.005g tin pellets in advance, covering 1.500g±0.005g tungsten pellets, the ratio of tin to tungsten is 1 : 5. Shake the crucible gently, then place the carbon-sulfur ceramic crucible on the high-frequency infrared carbon-sulfur analyzer to determine the carbon content. Operate according to the instrument manual, and measure the YSBC37648-10 high-carbon ferrochrome standard sample 3 times in parallel. The measurement results are shown in Table 2.
[0047] Table 2
[0048]
[0049] Note: The analysis sample is YSBC37648-10 high-carbon ferrochrome C% is 8.49% GB / T 4699.4-2008 "Determination of carbon content of ferrochromium and silicon-chromium alloy infrared absorption method and weight method" When the carbon content is greater than 8.00%, it is allowed The difference is 0.20.
[0050] It can be seen...
Example Embodiment
[0051] Example 3
[0052] Weigh 0.1000g YSBC37648-10 high-carbon ferrochromium standard sample with an electronic balance, accurate to 0.1mg, and place it in a ceramic crucible weighing 0.300g±0.005g pure iron carbon-sulfur on the balance beforehand, mix well, and then cover the tin separately : Tungsten=1:7, tin: tungsten=1:4, mixed co-solvent 1.500g±0.005g, shake the crucible gently, then place the carbon-sulfur ceramic crucible on the high-frequency infrared carbon-sulfur meter to determine the carbon content. Operate according to the instrument's instructions, and measure YSBC37648-10 high-carbon ferrochromium standard sample 3 times in parallel. Co-solvent adding method and combustion situation are shown in Table 3
[0053] table 3
[0054]
[0055] Note: The analysis sample is YSBC37648-10 high-carbon ferrochrome C% is 8.49% GB / T 4699.4-2008 "Determination of carbon content of ferrochromium and silicon-chromium alloy infrared absorption method and weight method" When the carb...
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