https://wiki.thefornax.com/ 2026-06-17T08:20:23+00:00 https://wiki.thefornax.com/ https://wiki.thefornax.com/lib/tpl/dokuwiki/images/favicon.ico text/html 2020-04-06T19:44:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.thefornax.com/doku.php?id=boiler:smelt_system:dissolving_tank&rev=1586202257&do=diff Dissolving Tank Liquid Temperature in the tank: 95 – 98 oC *Andritz Liquid Temperature in the tank: 194 – 207 oF *Valmet Too low temp = risk of pirssonite forming (crystallization) Too high temp = too many gasses formed Green liquor density: 1.13 – 1.18 kg/l text/html 2020-04-06T20:34:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.thefornax.com/doku.php?id=boiler:smelt_system:reduction_efficiency&rev=1586205260&do=diff Reduction Efficiency Na2S / (Na2S + Na2SO4) text/html 2020-06-17T13:11:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.thefornax.com/doku.php?id=boiler:smelt_system:smelt_spouts&rev=1592399511&do=diff Smelt Spouts Smelt Spouts are used to help remove molten smelt from the recovery boiler. Operations Generally, lower inlet temperatures of the smelt spout cooling water than the minimum recommended temperatures may cause accelerated corrosion due to dissolving tank fumes condensation text/html 2020-04-06T19:38:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.thefornax.com/doku.php?id=boiler:smelt_system:smelt_system&rev=1586201925&do=diff Smelt Smelt Spouts Dissolving Tank text/html 2020-04-06T20:33:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.thefornax.com/doku.php?id=boiler:smelt_system:smelt&rev=1586205203&do=diff Smelt Recovery Boiler reduction efficiency: 93 - 95% in smelt (typical 97%) Production: about 0.4 kg / 1 kg of black liquor DS Typical Composition: Sodium Carbonate Na2CO3: 65 - 75% Sodium Sulfide Na2S: 20 - 25% Sodium Sulfate Na2SO4: 0.5 - 1.5% Melting Point: 800 - 900 oC Smelt spouts are used to help remove the smelt from the recovery boiler.