| 摘要 |
Carbonaceous fines, such as coke fines, bituminous coal fines, anthracite coal fines, lignite fines, coal char, lignite char, wood char and mixtures thereof, are formed into hardened, crush-resistant agglomerates by preparing a moistened mixture including a major proportion of the carbonaceous fines, about 1 to about 15 weight % of a bonding agent, such as burned lime, CaO, or hydrated lime, Ca(OH)2, and about 0.25 to about 10 weight % of a siliceous material, such as silica, having available SiO2 for reacting with the bonding agent to form silicate or hydrosilicate bonds therewith; allowing the resulting mixture to stand a time period sufficient for a substantial portion of the free internal moisture in the pores of the carbonaceous fines to migrate to the surface thereof; forming the mixture into green discrete agglomerates; drying the green agglomerates to reduce the free moisture content therein to about 5% or less; and hydrothermally hardening the green agglomerates. |
