BENTONITE
FORMULA: (Mg-Ca)O-Al2O3-5SiO2-nH2O
CAS NO.: 1302-78-9
GRADE: SODIUM TYPE
DESCRIPTION: POWDER. RELATIVE DENSITY IS AROUND 2, MELTING POINT IS 1330--1430℃.
SPECIFICATIONS:
ITEM |
GRADE 1 |
GRADE 2 |
ABSORBING METHYLENE-BLUE VALUE (g/100g) |
32 MIN. |
32 MIN. |
GELATINE (ml/15g) |
500 |
400 |
EXPANDED MULTIPLE (ml/g) |
50 MIN. |
20 MIN. |
WET PRESS STRENGTH (kpa) |
50 MIN. |
40 MIN. |
HEAT-WET TENSILE STRENGTH (kpa) |
3.0 |
2.0 |
PH VALUE |
8.0-9.5 |
8.0-9.5 |
MOISTURE |
10% MAX. |
10% MAX. |
FINENESS (THOUGH 200 MESH) |
95% MIN. |
95% MIN. |
USES: used to be the foundry sand binder in cast iron and cast steal's mixed mould, surface dry mould, fired mould and pressure moulding.
PACKING: PACKED IN 25KG/50KG/1000KG NET BAG.
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