GB/T 3884.16-2014 《Methods for chemical analysis of copper concentrates―Part 16： Determination of silicon dioxide content―K2SiF6 titrimetric method and Gravimetric method》 Related products

This standard specifies methods for the determination of silica content in copper concentrates, including the potassium fluorosilicate Titrimetric method and the weighting method. The measurement range of method 1 is 0.50%~ 32.00%, and the measurement range of method 2 is 0.50%~ 40.00% (arbitration method). In method 1, after the sample is melted and acidified by alkali, the hydrofluoric acid is precipitated in hot water by using the reaction of potassium fluorosilicate settling with hydrofluoric acid, and the content of silica is calculated by titration with sodiumhydrate. Method 2 is the weighting method, which involves the weighting determination of potassium fluorosilicate settling to ensure accuracy and Reliability. The two methods are suitable for different measurement ranges and provide an effective means of analyzing the content of silica in copper concentrates.