GB/T 5195.3-2017 in English
VALIDFluorspar--Determination of loss in mass at 105 ℃--Gravimetric method
- Issued on:2017-09-07
- Implemented on:2018-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$68.00
《GB/T 5195.3-2017萤石 105℃质损量的测定 重量法》由TC183（全国钢标准化技术委员会）归口，TC183SC17（全国钢标准化技术委员会冶金非金属矿产品分会）执行，主管部门为中国钢铁工业协会。
Introduction
GB/T 5195.3—2017 Standard Overview
GB/T 5195.3—2017 "Determination of mass loss of fluorite at $105~^{\circ}\mathrm{C}$ by gravimetric method" is an important part of the national standard of the People's Republic of China. It mainly stipulates the method of determining the mass loss of fluorite at $105~^{\circ}\mathrm{C}$ by gravimetric method. This standard is applicable to the determination of mass loss in the fluorite industry, and its mass fraction range is $0.02\%$ to $10.00\%$.
Background and significance of standard revision
This standard replaces the old version GB/T 5195.3—2006, and is mainly updated in the following aspects:
- Update of normative reference documents: The latest versions of relevant standards and documents are adopted.
- Increased measuring instrument requirements: clarified the technical parameters of electric ovens and balances.
- Adjusted the number of measurements: changed the original three samples to two, improving the detection efficiency.
- Introduced numerical rounding rules: the results are retained to two decimal places to ensure the accuracy and consistency of the data.
Comparative analysis of standard frameworks
| Technical requirements dimensions | Old version GB/T 5195.3—2006 | New version GB/T 5195.3—2017 |
|---|---|---|
| Measurement temperature control | $105~^{\circ}\mathrm{C}$ | $105~^{\circ}\mathrm{C} \pm 2~^{\circ}\mathrm{C}$ |
| Number of sample measurements | Three samples | Two samples |
| Result rounding rules | Not specified | According to GB/T8170, keep two decimal places |
Implementation suggestions and precautions
Instrument selection:It is recommended to use an electric drying oven with high precision and stable temperature control, such as Muffle Oven or Precision drying oven.
Sample preparation:Sampling and sample preparation should be carried out strictly in accordance with GB/T 22564 to ensure the representativeness of the sample.
Operation specification:During the measurement process, attention should be paid to the drying time and temperature control to avoid errors caused by overheating or insufficient drying of the sample.
Data processing: Use professional software or calculator to calculate the results, and perform numerical rounding according to GB/T8170 to ensure the accuracy and consistency of the final results.
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