What is barite? What performance needs to be tested?
Barite is a mineral containing calcium, sulfur and oxygen with the chemical formula CaSO4. It usually exists in a colorless or white crystalline form and is one of the sulfate minerals. Barite has a wide range of industrial applications, including its use in the manufacture of plasterboard, plaster molds, sulfate fertilizers, cement additives, etc.
Performance of detection
| Performance | Method of detection |
|---|---|
| Calcium content | Flame atomic absorption spectrometry, EDTA titration, acid-base titration, etc |
| Sulfur content | Flame atomic absorption spectrometry, ultraviolet spectrophotometry, ICP-AES, etc |
| Content of moisture | Gravimetric method, drying method, potassium halate titration, etc |
| Specific surface area | Specific surface area measuring instrument, BET method, etc |
| Structure of crystal | X-ray diffraction analysis, infrared spectroscopy, etc |
| Content of impurities | Atomic absorption spectrometry, chromatography, etc |
| Particle size | Laser particle size analyzer, optical microscope method, time of flight method, etc |
What is barite? What performance needs to be tested?
Method of detection
The following methods are used to test the common properties of barite:
| Performance | Method of detection |
|---|---|
| Particle size distribution | Liquid displacement method, laser particle size analysis, microscope observation method |
| Specific surface area | Specific surface area measurement instrument method, gas phase adsorption method, liquid phase adsorption method |
| Color | Spectrophotometry, colorimeter |
| Purity of substance | X-ray fluorescence spectroscopy, ICP-MS |
| Density of density | Densitometer method |
| Fluorescence performance | Fluorescence spectroscopy, ultraviolet absorption spectroscopy |
Among them, the particle size distribution and specific surface area are usually determined by liquid displacement method and specific surface area meter method. Color can be detected by spectrophotometry and colorimeter; The purity is often determined by X-ray fluorescence spectrometry and ICP-MS. Density can be detected by densitometer method; The fluorescence performance can be measured by fluorescence spectroscopy and ultraviolet absorption spectroscopy.