GB/T 1509-1979
Method for determination of silicon dioxide content in manganese ores (English Version)
- Standard No.
- GB/T 1509-1979
- Language
- Chinese, Available in English version
- Release Date
- 1979
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2007-02
- Replace By
- GB/T 1509-2006
- Latest
- GB/T 1509-2016
- Scope
- In addition to the implementation of the general rules and general provisions in accordance with GB1467-78, the following provisions are supplemented according to the characteristics of manganese ore: If there are two methods listed for the same element and the same range, if disputes arise due to different methods used in the arbitration analysis, the first method shall be used to analyze the results prevail. During the analysis, always weigh the air-dried sample; weigh the sample at the same time as the measurement to determine the percentage of wet water (A). When calculating the analysis element result, the obtained result (percent content) should be multiplied by the conversion factor (K), which is the percentage content of the analyzed element (component) in the completely dry sample. Conversion factor (K) = 100/100-A The particle size of the sample needs to pass 150-200 mesh.
GB/T 1509-1979 history
- 2016 GB/T 1509-2016 Manganese ores.Determination of silicon content.Perchloric acid dehydration gravimetric method
- 2006 GB/T 1509-2006 Manganese ores. Determination of silicon content. Perchloric acid dehydration gravimetric method
- 1979 GB/T 1509-1979 Method for determination of silicon dioxide content in manganese ores
