C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
44/50
C10L 5/12 (2006.01) C04B 14/02 (2006.01) C04B 28/20 (2006.01)
Patent
CA 1124071
Abstract of the Disclosure 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-resistance 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.
346525
Board Of Control Of Michigan Technological University
Macrae & Co.
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