Basalt Roving

Basalt Rebar

Reinforcing Mesh

Machines for the Production of Rebars and Reinforcing Meshes

Filament Winding

Basalt Yarn

Basalt yarn is manufactured by melting chopped basalt rocks in а furnace under the temperature of 15000C. The large amount of iron oxide in basalt rocks gives the stone typical dark color and increases the homogenization and the temperature of crystallization. Concerning the viscosity, basalt yarn is steeper than fiberglass yarn.  

 

Comparative Characteristics of Glass Fiber and  Basalt Fiber

Features

Basalt Fiber

Glass Fiber

Thermal

Operation temperature, оС

from-260 to +700

from -60 to + 460

Sintering temperature, оС

1000

600

Coefficient of thermal conductivity, W / mK 

0,031 -0,038

0,034 – 0,04

Physical

Diameter of filament, micron

9-23

6-17

Tex (g/km)

28-480

28-480

Density, kg / mz

2600-2800

2540-2600

Modulus of elasticity, kg / mm2

9100-11000

to 7200

Durability after Thermal Treatment, %

at 20   оС

100

100

at 200 оС

95

92

at 400 оС

82

52

 

Types of Twisted Yarns

 

 A single yarn twist – the most simple one, twisted in one direction. 

Multitwisted yarn - two or more single yarns can be twisted together to form a thicker yarn.