Determining Raw Cashmere Fibre Micron Profiles in Scoured Bales
Determining raw cashmere fibre micron profiles in scoured bales requires core sampling, lipid extraction, and truncated bimodal histogram distribution analysis.
Suint
Wool Sweat
The natural excretion from the sweat glands of sheep accumulates on wool fibres as a water-soluble potassium soap. This suint coat acts as a protective layer on the wool grease, shielding the fleece from weather damage. It constitutes a measurable portion of the raw fleece weight before scouring.
Water Solubility
Unlike wool grease, which requires surfactants and high temperatures to emulsify, this substance dissolves easily in cold or warm water. The water-soluble suint consists mostly of potassium salts of organic acids, along with smaller amounts of nitrogenous compounds. It can be recovered from the scour waste water by evaporation.
Scouring Process
Industrial wool scouring utilizes the natural detergent properties of this sweat to assist in the cleaning process. When raw wool is washed, the dissolved suint increases the detergent power of the scouring liquor, reducing the amount of synthetic surfactant required. The concentration must be monitored to prevent the wash water from becoming too saturated with dirt and salts.
Soil Fertility
The waste products extracted from the wool washing process can be treated to recover valuable agricultural minerals. Due to its high potassium content, the recycled suint is often processed into fertilizer for crop production. This extraction reduces the organic load of the wool mill’s wastewater, making the factory effluent easier to treat before discharge.
Importers and scourers thus convert a heavy waste stream into a secondary income source while reducing environmental impact.