Bleached Hardwood Kraft Pulp (BHKP) is a southern bleached kraft pulp manufactured from a mix of hardwoods. The primary wood species are oak and gum, along with a small amount of Southern pine. The pulp is clean and exhibits high bulking. The pulp is a dry fibrous material prepared chemically or mechanically which involves separating fibers from wood, fiber crops, or waste paper. The pulp can be either fluffy or formed into thick sheets. The latter form is used in the pulp must be transported from the pulp mill to a paper mill. When suspended in water the fibers disperse and become more pliable. This pulp suspension can be laid down on a screen to form a sheet of paper, and this is the primary use for wood pulp.

Manufacturing Process

The pulping process converts raw materials into a fibrous mass that can be formed into paper or cardboard. Wood contains both cellulose fibers and lignin; the objective of the kraft pulping process is to dissolve the lignin and leave most of the cellulose fibers intact.
The main operations performed in the kraft pulping process are:

1. Digestion of wood to form a pulp.
2. Pulp processing to recover spent cooking chemicals and to remove impurities and uncooked wood chips (deknotting, pulp washing, pulp screening).
3. The concentration of used pulping liquor for chemical recovery