The HG/T 2957.9-2004 standard specifies a method for the determination of silica content in alum ore by weight method, which is suitable for alum ore products with a silica content greater than 10%. This method uses perchloric acid analysis samples and hydrofluoric acid treatment of the dissolved residue to allow the silicon to escape in the form of silicon tetrafluoride, and calculates the silica content according to the mass reduction. The standard provides a scientific and accurate method for detecting the silicon content in alum ore, ensuring the conformity of the product mass and composition.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | (D51) 化工原料矿 | ICS | (73.080) 非金属矿 |
| Release Date | 2004-12-14 00:00:00 | Implementation Date | 2005-06-01 00:00:00 |
