Asbestos is called a white natural mineral, or rather, a group of fine-fiber minerals. This stone is used in many industries. There are two types of asbestos: amphibole and chrysotile. Chrysotile asbestos is more popular. How it differs from the amphibole analogue, we will tell further.
Material features
The main characteristics of the material are durability and alkali resistance. And asbestos does not burn at all. This property was known in ancient Egypt. They knew about this in Europe too: Charles V ordered to weave a tablecloth from asbestos fibers and had fun, surprising guests by throwing the product along with the remnants of food into the fire. The food burned, but the tablecloth remained intact.
In addition, chrysotile asbestos has the following properties:
- Elasticity.
- High strength.
- Heat resistance. At temperatures above +700 degrees, the stone fibers become brittle, and at + 1500 degrees they begin to melt.
- Low electrical and thermal conductivity.
- Explosion proof.
- Fire resistant.
- Safety: when heated, the material does not emit substances harmful to living organisms.
Asbestos also has adsorption reinforcing and spinning properties.
Types of material
Chrysotile asbestos is divided into several groups, depending on what fractional composition the substance has. The separation takes place on the control apparatus, on special sieves. Each sieve has different mesh sizes:
- 12.7mm;
- 4.8mm;
- 1, 35mm;
- 0.4mm.
Further, the material is divided into 7 groups according to the size of the obtained fraction. Group 6 is considered the most demanded. This is chrysotile asbestos grades K-6-30, K-45, K-20, K-5. It is used in the production of asbestos-cement building materials:
- Wavy sheets. Wavy and flat sheets are available.
- Extrusion panels for walls and roofs.
- Partition panels for exterior and interior walls in buildings and structures.
Scope of application
Chrysotile asbestos is widely used due to its almost unique properties. With it:
- Perform thermal insulation of heating devices, stoves.
- Bricking steam boilers.
- Produce asbestos-cement and asbestos products.
- Provides heat insulation for curved products.
- Protect metal structures from high temperatures andetc.
Chrysotile is also used in the paper, automotive, medical and glass industries.
Chrysotile asbestos grade K-6-30: specifications
The material has the following properties:
- Heat resistance limit - 500 °C.
- Begins to melt at 1500°C.
- Density index - 2.6 g/cm3.
- Alkalinity - about 10.2 pH.
- 0, 8 – coefficient of friction.
- The tensile strength index is over 3000 MPa.
Packaging, transportation, storage
Chrysotile asbestos is packed in synthetic or paper bags. The weight of the bags is 50, 45 or 40 kg. Transportation is possible by all means of transport. The only condition for this is the ability to comply with the technical conditions of loading / unloading. In addition, the load must be firmly secured. For rail transport, it is recommended to move material in wagon shipments to maximize the use of wagon capacity.
In order for a substance to retain all its substances, it must be stored in a packaged form. It is desirable that the premises used for this be closed. If the storage places are open areas or suspended structures, it is necessary that the chrysotile be packed in synthetic bags, and covered with a waterproof material on top to protect it from moisture. So the material can be stored for quite a long time, but not more than one year from the date of its manufacture.
