Black Liquor Soap

Trucks with logs on their way to a pulp mill

A natural intermediate byproduct of kraft pulping, black liquor soap is the rosin and fatty acid content that floats to the top as black liquor is left to settle. It is skimmed off and can be used as a raw material for tall oil production. Black liquor soap can be somewhat abrasive and range in viscosity from 22 to 5500 cP, depending on the temperature it is handled at.

1124A

Cast iron
Abrasive resistant sealing option
Hardened iron bushings and hardened steel shaft
Capacities to 400 GPM

1127C

316 Stainless Steel
O-Pro® Guard seal low shear
Capacities to 320 GPM

1224A

Cast iron
Jacketed for steam/oil prior to pump startup
O-Pro® Barrier seal
Capacities to 400 GPM