Wollastonite
1. Refined mineral，needle powder，Metallurgical grade，Ceramic grade
2. Packing:25kg/bag,50kg/bag
Wollastonite Product
Wollastonite extensive use in oil paint, plastics, rubber, electric welding, glass, electron industry, metallurgy and paper making. Its insulation performance is very good, endure acid, resist abrade, bear high temperature, have good fibre performance.
Refined mineral wollastonite
Features:
1) high purity near the theoretic component
2) good needle-shape, low ignition loss
3) low content of harmful constituent such as fe2o3, s and p
Main chemical components (%):
Sio2 |
Cao |
Fe2o3 |
Al2o3 |
Mgo |
S |
P |
Loss |
>49 |
>45 |
<0.2 |
< 0.8 |
<0.8 |
<0.001 |
<0.001 |
<1.5 |
Packing:25kg/bag,50kg/bag
Wollastonite needle powder
Features:
1) 325 mesh to 1250 mesh
2) high length-diameter ratio, high whiteness
3) widely used in plastic, rubber, paint and coating, ceramic, frictional materials, insulator, building materials, composite materials and other fields
Physical-chemical index (%):
1) nfw-xa:
Sio2 |
Cao |
Fe2o3 |
Al2o3 |
Mgo |
S |
P |
Loss |
>49 |
>46 |
<0.25 |
< 0.8 |
<0.8 |
<0.001 |
<0.001 |
<1.5 |
2) nfw-xb:
Sio2 |
Cao |
Fe2o3 |
Al2o3 |
Mgo |
S |
P |
Loss |
>50 |
>43 |
<0.2 |
< 0.8 |
<0.8 |
<0.001 |
<0.001 |
<3 |
3) nfw-xc:
Sio2 |
Cao |
Fe2o3 |
Al2o3 |
Mgo |
S |
P |
Loss |
>51 |
>40 |
<0.2 |
< 0.8 |
<0.8 |
<0.001 |
<0.001 |
<5 |
Packing:25kg/bag,50kg/bag
Metallurgical grade wollastonite
Features:
1) 80 mesh to 325 mesh
2) used in continuous casting flux, agglomerated flux, welding electrodes
Physical-chemical index (%):
1) nfw-ya:
Sio2 |
Cao |
Fe2o3 |
Al2o3 |
Mgo |
S |
P |
Loss |
>49 |
>45 |
<0.25 |
< 0.8 |
<0.8 |
<0.001 |
<0.001 |
<1.6 |
2) nfw-yb:
Sio2 |
Cao |
Fe2o3 |
Al2o3 |
Mgo |
S |
P |
Loss |
>49 |
>43 |
<0.2 |
< 0.8 |
<0.8 |
<0.001 |
<0.001 |
<2.5 |
3) nfw-yc:
Sio2 |
Cao |
Fe2o3 |
Al2o3 |
Mgo |
S |
P |
Loss |
>51 |
>40 |
<0.2 |
< 0.8 |
<0.8 |
<0.001 |
<0.001 |
<5 |
Packing:25kg/bag,50kg/bag
Ceramic grade wollastonite
Features:
1) 200 mesh to 325 mesh
2) when sufficient wollastonite is added to ceramic material, the
Baking temperature can be decreased, and the baking duration greatly shortens to one rapid low temperature bake, thus saving fuel and reducing production costs
3) at the same time the mechanical properties are improved, cracks and streaks on the products are eliminated and quality raised
Physical-chemical index (%):
1) nfw-ta:
Sio2 |
Cao |
Fe2o3 |
Al2o3 |
Mgo |
S |
P |
Loss |
>49 |
>45 |
<0.25 |
< 0.8 |
<0.8 |
<0.001 |
<0.001 |
<1.6 |
2) nfw-tb:
Sio2 |
Cao |
Fe2o3 |
Al2o3 |
Mgo |
S |
P |
Loss |
>50 |
>43 |
<0.25 |
< 0.8 |
<0.8 |
<0.001 |
<0.001 |
<2.5 |
3) nfw-tc:
Sio2 |
Cao |
Fe2o3 |
Al2o3 |
Mgo |
S |
P |
Loss |
>51 |
>40 |
<0.25 |
< 0.8 |
<0.8 |
<0.001 |
<0.001 |
<5 |
Packing:25kg/bag,50kg/bag
