Fire assay crucible
Material: Alumina Ceramic, Alumina Ceramic, Clay
Size: 20g/30g/40g/45g/50g/55g/65g/75g
Usage: fire assay, gold melting, precious metal assay
Color: Ivory
Product instruction
Fire assay crucibles have a higher than normal resistency to cracking under fire assay conditions, used in laboratories. We have a variety of shapes and sizes available to cater to specifications required.
Our crucibles give longer life, faster melting, constant melting speed and exceptional resistance to violent changes of temperature.
Details of chemical content
|
Typical Chemical Analysis |
|
|
SiO2 |
69.84% |
|
Al2O3 |
28% |
|
CaO |
0.14 |
|
Fe2O3 |
1.90 |
|
Working Temperature |
1400℃-1500℃ |
|
Specific Gravity: |
2.3 |
|
Porosity: |
25%-26% |
Data of dimensions
Applications:
Precious metal analysis
Mineral assaying
Mining laboratory
Laboratory Testing
Fire Assaying
Gold Assaying
Features
Long lasting, can be used 3-5 times
High mechanical strength designed to withstand severe thermal shocks
Can withstand extremely corrosive fire assay environments
Can withstand repetitive thermal shocks from 1400 degree celcius to room temperature
Production Information:
(1) Press: Pressed the crucibles by punch machine with specific mould according to the sizes that customer require
(2) Air-dry: Pressed crucible, air dried for at least 12 hours in the air drying workshop
(3) Drying: when the crucible is air dried for 12 hours, enters the self built drying line using natural gas and is dried for 36 hours
(4) Inspection and packing: the crucible after drying for 36 hours, inspect the surface of crucibles whether is smooth or have cracks. After inspection, packed. .
Packing and delivery:
After finishing the order,the standard export carton or wooden case will be packed carefully. We accept all kinds of delivery terms, including EXW, FOB, CFR, CIF
