1) low-temperature coke
2) semi-coke
the solid residue or the low-temperature distillation of coal at about 600°C
GRM: n. (1,2)
Note: of brown coal the temperature would be 40O0C to 600°C; of peat 350°C to 550°C
References:
GEN coke
SEE high-temperature coke

ENERGY TERM COURTESY OF ENERGY.EU