Size distribution of particles in high sulphur coal ash and their chemistry: a computer-controlled scanning electron microscopic study
- Resource Type
- Authors
- Binoy K. Saikia; Bimala P. Baruah; Tonkeswar Das
- Source
- Journal of the Geological Society of India. 85:206-214
- Subject
- Ash chemistry
business.industry
Scanning electron microscope
technology, industry, and agriculture
chemistry.chemical_element
Mineralogy
Geology
Barium
respiratory system
complex mixtures
Sulfur
respiratory tract diseases
chemistry
Fly ash
otorhinolaryngologic diseases
Particle
Coal
Particle size
business
- Language
- ISSN
- 0974-6889
0016-7622
The computer-controlled scanning electron microscope (CCSEM) technique was applied to the industrially important coal samples from North-East India to understand the distribution of particle size and consequent ash chemistry. The analysis reveals the presence of ash constituents in different particle sizes with dominance of SiO2 and F2O3 in the coal samples. The variations of the excluded and included nature of these constituents in the coals were evaluated, where the included nature was found to be more dominant than that of excluded ones in both the coal samples. Barium exists in the coals as included in nature. Lead was observed to be associated with the organic part of the coal. The particle-size distributions of the ash constituents were used to interpret the slagging chemistry of the coals.