Relying on advanced technology, excellent production capabilities, and perfect service, XTL takes the lead in the industry now and spreads our XTL all over the world. Together with our products, our services are also supplied to be the highest-level. fire-assay XTL is a comprehensive manufacturer and supplier of high-quality products and one-stop service. We will, as always, actively provide prompt services such. For more details about our fire-assay and other products, just let us know.The separation and purification process of XTL will be conducted for several times. It is separated from the complicated mineral aggregates and refined at least two times for high purity.
Our fire assay crucible selection high quality alumina bauxite,mullite,kaolin as raw material with scientific formula, advanced technology forming by large tonnage of hydraulicmodern, Sintered with natural gasmechanical processing to suppress the crucibles, very low content of gold and silver elements can make the test results more accurate.
We can do OEM and OBM According to your drawing and requirements.
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.
Wooden Case Dimension (mm)
Precious Metal Analysis
Fire assay crucible
SiO2 + Al2O3
Automatic molding equipment
ISO 9001 SGS
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.
L.O.I(loss on ignition)
Long lasting, can be used many times
High mechanical strength designed to withstand severe thermal shocks
Special formula, curing and pressing process
Can withstand extremely corrosive fire assay environments
Can withstand repetitive thermal shocks from 1300 degree Celsius to room temperature
7000 square meters work shop
Automatic production line
Longer working life
All prototype products have to go through 4 checks in the whole process:
1. Raw material inspection
2. In processing inspection
3. Final inspection
4. Outgoing inspection
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