Thermal drying dehydration and moisture migration in anthracite

ABSTRACT

To improve the quality of anthracite disposed by fracturing technology, the dehydration characteristics of anthracite were studied experimentally. The influences of temperature and particle size were investigated. The results show that the drying temperature has significant effects on water loss rate. The higher the temperature is, the faster the growth rate decreases. The particle size has little effects on the water loss rate at the beginning of dehydration process. So compared with reducing the particle size, increasing the temperature can promote the dehydration of anthracite in initial stage. Smaller particle size benefits the dehydration process.

KEYWORDS:

• Anthracite
• isothermal drying
• particle size
• temperature
• water loss rate

Funding

This work is financially supported by the National Science and Technology Major Project of China (Grant No. 2016ZX05043005), the State Key Research Development Program of China (Grant No. 2016YFC0801404 and 2016YFC0801402), and the National Natural Science Foundation of China (51674050).

Additional information

Funding

This work is financially supported by the National Science and Technology Major Project of China (Grant No. 2016ZX05043005), the State Key Research Development Program of China (Grant No. 2016YFC0801404 and 2016YFC0801402), and the National Natural Science Foundation of China (51674050).