Production of High-Strength Coke from Formed Coal Containing Low-Quality Coal by Pressurized Carbonization

We studied the pressurized carbonization conditions that can produce high-strength coke at low temperature (800 degrees C) from formed coals containing a large amount of non-caking or slightly- caking coal. It was found that as the rapid heating temperature range (room temperature -> 450-600 degrees C) increased, the amount of adherence between coal particles increased and the coke strength increased. The effect of the heating rate (10-40 degrees C/min) became significant when the heating temperature exceeded 500 degrees C, and increased with increasing heating rate. The strength also increased with increasing pressure, and the optimal pressure under the present conditions was 1 MPa.

Automated summary

We studied the pressurized carbonization conditions for producing high-strength coke at low temperature. The results showed that increasing the rapid heating temperature range, heating rate, and pressure can all enhance the strength of the coke.