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Journal articles
Agglomeration tendency of contaminants in recycled fibers, TAPPI JOURNAL, March 1998, Vol. 81(3)
Agglomeration tendency of contaminants in recycled fibers, TAPPI JOURNAL, March 1998, Vol. 81(3)
Journal articles
Production of dissolving pulp from recovered paper using enzymes, TAPPI JOURNAL, March 1998, Vol. 81(3)
Production of dissolving pulp from recovered paper using enzymes, TAPPI JOURNAL, March 1998, Vol. 81(3)
Journal articles
Finish applications on bleached and scoured cotton in improving nonwoven processing, TAPPI JOURNAL, March 1998, Vol. 81(3)
Finish applications on bleached and scoured cotton in improving nonwoven processing, TAPPI JOURNAL, March 1998, Vol. 81(3)
Journal articles
Development of an ozone-based tcf sequence for bleaching a hardwood alcell pulp, TAPPI JOURNAL, May 1998, Vol. 81(5)
Development of an ozone-based tcf sequence for bleaching a hardwood alcell pulp, TAPPI JOURNAL, May 1998, Vol. 81(5)
Journal articles
Effect of differences in climate on growth, wood, and pulp properties of nine eucalypt species at two sites, TAPPI JOURNAL, July 1999, Vol. 82(7)
Effect of differences in climate on growth, wood, and pulp properties of nine eucalypt species at two sites, TAPPI JOURNAL, July 1999, Vol. 82(7)
Journal articles
Differences in bleaching responses from fungal- versus bacterial-derived enzymes, TAPPI JOURNAL March 2012
Differences in bleaching responses from fungal- versus bacterial-derived enzymes, TAPPI JOURNAL March 2012
Journal articles
Reductive degradation of residual chromophores in kraft pulp with sodium dithionite, TAPPI JOURNAL March 2012
Reductive degradation of residual chromophores in kraft pulp with sodium dithionite, TAPPI JOURNAL March 2012
Journal articles
Two-sided drainage handsheet machine, TAPPI JOURNAL May 2012
Two-sided drainage handsheet machine, TAPPI JOURNAL May 2012
Journal articles
Magazine articles
Fate of phosphorus in the recovery cycle of the kraft pulping process, TAPPI Journal March 2020
ABSTRACT: The accumulation of nonprocess elements in the recovery cycle is a common problem for kraft pulp mills trying to reduce their water closure or to utilize biofuels in their lime kiln. Nonprocess elements such as magnesium (Mg), manganese (Mn), silicon (Si), aluminum (Al), and phosphorus (P) enter the recovery cycle via wood, make-up chemicals, lime rock, biofuels, and process water. The main purge point for these elements is green liquor dregs and lime mud. If not purged, these elements can cause operational problems for the mill. Phosphorus reacts with calcium oxide (CaO) in the lime during slaking; as a result, part of the lime is unavailable for slaking reactions. The first part of this project, through laboratory work, identified rhenanite (NaCa(PO4)) as the form of P in the lime cycle and showed the negative effect of P on the availability of the lime. The second part of this project involved field studies and performing a mass balance for P at a Canadian kraft pulp mill.
Journal articles
Magazine articles
Combatting lime kiln ringing problems at the Arauco Constitución mill, TAPPI Journal July 2020
ABSTRACT: The lime kiln at the Arauco Constitución mill experienced severe ringing problems requiring it to be shut down for ring removal every 3 to 6 months. The mill controlled the problems by blasting ring deposits off during operation with its existing industrial shotgun and a newly installed Cardox liquid carbon dioxide (CO2) cartridge system. Various ring blasting procedures were tested to determine the optimum ring location and thickness to blast; the optimum depth to insert the CO2 cartridge into the kiln; and the most effective blasting frequency and sequence to employ. The best strategy was found to be the weekly blasting operation that alternated between the liquid CO2 cartridge and the industrial shotgun, with the CO2 cartridge inserted into the ring mass, 20 cm (8 in.) away from the refractory brick surface, and the shotgun aimed at rings at about 28 m (92 ft) from the kiln discharge end. With each blasting event removing considerably more rings than before, it takes a longer time for rings to rebuild, allowing the kiln to run continuously between annual maintenance shutdowns with only a few short (< 4 h) downtimes for ring removal. This substantially reduces the costs associated with ring removal and lime replacement during unscheduled shutdowns.