These fire assay crucibles provide erosion and cracking resistance under harsh working conditions (up to 1300ºC). Universal Fire Assay Crucibles yield longer life, faster fusion, constant melting speed and resistance to thermal shock.
The material of construction is high quality refractory fire clay with high alumina content that makes them resistant to litharge attack.
Product Introduction
Fire Assay Crucibles
A modern fire assay crucible is not that far removed from those of the past with the exception of the additional science behind it’s composition. Modern crucibles are made for laboratory use rather than refining and so are required to be exacting in their specifications. Additionally they should be strong enough to withstand huge changes in temperature through multiple uses.
The crucible is used for the first part of the fire assay fusion process. The following process is typical:
· Flux and sample are added to the crucible
· The above additions are mixed together inside
· Heat is applied to the crucible and mixture by placing the pot in a furnace at > 1000oC
· After a pre-determined period of time the crucible is removed and the molten contents are poured into a cast iron mould
· The crucible is cooled and ready for it’s next use however, it may be disposed of if the previous sample contained high quantities of gold.
Chemical Composition
Item | Data |
SiO2 | 54.6% |
Al2O3 | 40.31% |
Fe2O3 | 1.11% |
TiO2 | 0.47% |
CaO | 1.28% |
MgO | 0.34% |
K2O | 0.61% |
L.O.I(loss on ignition) | 0.21% |
Item | OD (mm) | Height (mm) | Capacity (ml) | Wooden Case Dimension (mm) | Qty/Case (pc) | Qty/20’FCL (pc) |
XTL-30g | 88 | 110 | 250 | 1070*1070*1080 | 2310 | 46200 |
XTL-40g | 88 | 135 | 350 | 1110*1070*1080 | 1980 | 39600 |
XTL-45g | 88 | 160 | 500 | 1080*1170*1080 | 1296 | 25920 |
XTL-45g | 90 | 155 | 680 | 1140*1030*1120 | 1296 | 25920 |
XTL-50g | 105 | 150 | 700 | 1140*1030*1120 | 1530 | 30600 |
XTL-65g | 105 | 165 | 720 | 1140*1030*1120 | 1425 | 28500 |
XTL-750 | 120 | 160 | 750 | 1080*1170*1080 | 900 | 18000 |
Applications
Precious Metal Analysis
Mining Laboratory
Laboratory Testing
Mineral Assaying
Fire Assaying
Gold Assaying
Item: | Fire assay crucible |
Process Type: | Rolling molding |
Material: | SiO2 + Al2O3 |
Tolerance: | +-2mm |
Facility: | Automatic molding equipment |
Certificates: | ISO 9001 SGS |
Shipping: | Many stocks , delivery time around 5-10days . by sea or by air as customer request |
Delivery & Service: | Timely delivery each time. Provide reliable service and responsible for each customer with each product. Our target is to satisfy every customer with the best service. |
* 7 working days for standard products 30 days for customized products.
If you have another questions,please feel free to contact us.
Liling Xing Tai Long Special Ceramic Co.,Ltd
Contact: Fanny
Tel: +86 13975373343
0086-0731-23253338
Email: admin@llxtl-china.com
WhatsApp:0086-13975373343
Company address: Shentan Industrial Zone, Liling, Hunan, 412200
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