Method for integrating sodium based sulfite and sulfate pulping processes
United States Patent 2974081

Inventors:
Biggs Jr., William A.
Robertson, Julius D.
Publication Date:
03/07/1961
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Assignee:
SONOCO PRODUCTS CO
Primary Class:
International Classes:
D21C11/00
US Patent References:
1795755Production of chemical pulp
1833313Treatment of residual liquors
1834676Process of producing pulp and treatment of residual liquors
1859888Process of regenerating spent alkaline liquor to fresh acid cooking liquor
1867593Process of chemical fiber liberation
2459570Method of refining sulfate turpentine
2714118Recovery of chemicals from black liquor
2744927Solvent extraction of black liquor