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Air-drying timber stack. Wood drying (also seasoning lumber or wood seasoning) reduces the moisture content of wood before its use. When the drying is done in a kiln, the product is known as kiln-dried timber or lumber, whereas air drying is the more traditional method. There are two main reasons for drying wood: Woodworking
Its wood is knotty and of little interest for lumber. [4] The leaves are in fascicles of three, [6] needle-like, yellow-green, twisted, and 9–15 centimeters (3 + 1 ⁄ 2 –6 in) long. The cones are resin-sealed and irregularly shaped, [4] 8–16 cm (3 + 1 ⁄ 4 – 6 + 1 ⁄ 4 in) long and clustered in whorls of three to six on the branches ...
The inner wood is aromatic and used to make incense. Inner wood is distilled into essential oil. As insects avoid this tree, the essential oil is used as insect repellent on the feet of horses, cattle and camels. It also has antifungal properties and has some potential for control of fungal deterioration of spices during storage.
Leached wood is steamed for additional naphtha recovery prior to burning for energy recovery. [19] After the solvent has been recovered, "the terpene oils are separated by fractional distillation and recovered mainly as refined turpentine, dipentene, and pine oil. The nonvolatile residue from the extract is wood rosin of rather dark color.
A mature female big-cone pine (Pinus coulteri) cone, the heaviest pine cone A young female cone on a Norway spruce (Picea abies) Immature male cones of Swiss pine (Pinus cembra) A conifer cone, or in formal botanical usage a strobilus, pl.: strobili, is a seed-bearing organ on gymnosperm plants, especially in conifers and cycads.
In the United States the pine tree Pinus palustris, known as the longleaf pine, once covered as much as 90,000,000 acres (360,000 km 2) but due to timber harvesting was reduced by between 95% and 97%. The trees grow very large (up to 150 feet), taking 100 to 150 years to mature and can live up to 500 years.
Turpentine may alternatively be extracted from destructive distillation of pine wood, [3] such as shredded pine stumps, roots, and slash, using the light end of the heavy naphtha fraction (boiling between 90 and 115 °C or 195 and 240 °F) from a crude oil refinery. Such turpentine is called wood turpentine.
Cedrus atlantica foliage and mature female cone Male cones beginning to shed pollen. Fully grown, Atlas cedar is a large coniferous evergreen tree, 30 to 35 m (98 to 115 ft) (rarely 40 m) tall, with a trunk diameter of 1.5 to 2 m (4.9 to 6.6 ft).
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