GB/T 17513-1998 in English

National Standard of the People's Republic of China GB 17513-1998 Realgar and Orpiment Quality Standards In-depth Analysis

1. Background of Standard Formulation and Analysis of Technology Evolution

GB 17513-1998 "Regal and Orpiment" national standard was formulated on the basis of extensive investigation of the current status of production, scientific research and trade at home and abroad. This standard combines the actual situation in my country and aims to unify the quality grading system of realgar and orpiment, and standardize its application in the fields of chemical industry, metallurgy, medicine, etc.

2. Comparative analysis of standard frameworks

3. Key terms and practical application cases

4. Implementation suggestions and precautions

1. Quality control:The manufacturer should establish a complete sampling and sample preparation process to ensure the representativeness and accuracy of the sample. It is recommended to adopt the sampling method specified in GB/T 6678, and combine the sampling box and bag number determination rules in Tables 5 and 6 of this standard.
2. Detection method:The laboratory should give priority to the iodine titration (arbitration method) or potassium permanganate method to determine the arsenic content to ensure the accuracy and traceability of the analysis results. For moisture detection, it is recommended to use the drying method and strictly control the temperature conditions (80±2℃).
3. Packaging and storage:Products should be packaged in appropriate materials according to their quality grade and intended use. For example, high-quality products should be packaged in wooden boxes lined with kraft paper to reduce moisture loss, while flotation concentrates should be packaged in composite plastic woven bags (GB/T 8947).
4. Safety precautions:Realgar and orpiment are both sulfide minerals that react easily with strong oxidants. They should be stored in a high temperature and humid environment and away from open flames.