It is therefore necessary to process large tonnages. The fibres are then separated into different groups and grades, packaged, and distributed to factories, where the asbestos is used as an important primary or secondary constituent in many products. Uses of Asbestos Fibre length is the main criterion for assessing different grades and values of asbestos. The longer fibres can be carded and spun into yarns, either alone or along with cotton, or thin brass or copper wire. Other qualities, such as filterability, oil and water absorption, surface area and ease of fibre separation, are becoming increasingly important with wider and more specialized uses of asbestos.
Asbestos has many desirable characteristics.
It is strong and durable, resists fungus growth, corrosion, heat, acids and vermin. It insulates against heat, vibration, electricity and sound. Its fibrous form helps bind fillers, rubber, asphalt and cement. More than half of world production is used in asbestos-cement products. Asbestos fibre can be molded with plastics or glass, and dispersed in fluids, greases, adhesives and sealing compounds.