Tall oil, also called "liquid rosin" or tallol, is a viscous yellow-black odorous liquid obtained as a by-product of the Kraft process of wood pulp manufacture when pulping mainly coniferous trees. The name originated as an anglicization of the Swedish "tallolja" ("pine oil"). Tall oil is the third largest chemical by-product in a Kraft mill after lignin and hemicellulose; the yield of crude tall oil from the process is in the range of 30 – 50 kg / ton pulp. It may contribute to 1.0 - 1.5% of the mill's revenue if not used internally.
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Famous quotes containing the words tall and/or oil:
“There is regret. Always, there is regret.
But it is better that our lives unloose,
As two tall ships, wind-mastered, wet with light,
Break from an estuary with their courses set,
And waving part, and waving drop from sight.”
—Philip Larkin (1922–1986)
“I bade, because the wick and oil are spent
And frozen are the channels of the blood....”
—William Butler Yeats (1865–1939)