mica for welding electrodes

definition

Mica belongs to aluminum silicate minerals with 

continuous layered tetrahedron structure of silicon oxygen .

Chemical 

composition

SiO2 %

Al2O3 %

K2O %

H2O %

MgO %

muscovite

45.2

38.5

11.8

4.5

phlogopite

38.7~45

10.8~17

7~10.3

0.3~4.5

21.4~29.4

Physical 

properties

transparency

hardness

Coefficient of elasticity 

106Pa

muscovite

71.7~87.5%

2~2.5

1475.9~2092.7

phlogopite

0~25.2%

2.78~2.85

1394.5~1874.05

feature

Stable physical & chemical properties, acid & alkali resistance, insulative, 

high temperature resistance, shiny, good heat resistance, elasticity and 

tenacity

application

Widely used in construction, fire protection, welding rod, plastic, electric 

insulation, papermaking, rubber, pearl pigment, well drilling industry etc.  

packing

25kg/bag or as per client’s request