Iranian researchers have invented a new system to replace traditional wool washing systems with 80 per cent less water consumption. This invention can easily separate dead fibers and greatly increase the purity of wool. In this system, at first and without using water, only by creating electrical charges in wool fibers, we can easily separate high-quality wool fibers from the rest of the waste and dead fibers and produce many by-products.

First of all, plant and animal wastes are collected as chemical fertilizers because they can be separated dry. In addition, dead fibers, which are separated from high-quality fibers due to different density and electric charge, are used in the production of thermal insulation and industrial mats. Another valuable product called wool oil or wool wax, is produced lanolin and is widely used in the cosmetics industry. In this system, cleaned wool only needs one final wash and up to 80% of water consumption, energy and production of industrial effluents are reduced.

A 2.5 to 5 Nm yarn can be spun with dead fibers along with wool fibers, which is suitable for woollen spinning and so-called rug carpets and has a very low value. By separating the dead fibers, the purity of wool fiber is increased and it can be spun in the semi-worsted system to produce 5 to 25 Nm yarns, which are very suitable for the production of machine-made carpets and high-quality handmade carpets.

One of the most important features of this system is the separation of dead fibers and hairy fibers from real wool, which by increasing the purity of fibers and producing wool tops, provides the possibility of spinning fine yarns with a quality of 5 to 20 metric.

In addition, dead and hairy fibers can be recycled to be used in the thermal insulation industry and industrial felts as a by-product.