Set up years ago, XTL is a professional manufacturer and also a supplier with strong capabilities in production, design, and R&D. China Fire Assay Crucible Manufacture We have professional employees who have years of experience in the industry. It is them that provides high-quality services for customers all over the world. If you have any questions about our new product China Fire Assay Crucible Manufacture or want to know more about our company, feel free to contact us. Our professionals would love to help you at any time.This product is often used as an ingredient in the manufacturing of consumer products such as electronic or transportation products or used in the construction.
A crucible is a container or melting tank made of extremely refractory materials, such as clay, graphite, china clay or relatively refractory metals, mainly used for evaporation, concentration or crystallization of solutions, and burning of solid substances.
Drill core samples (or others) are received at the laboratory, crushed, milled and dried in the oven. Samples are then separated into bags, tagged and weighed.
Next, the samples are prepared for the fusion process, which requires a reducing environment and so the samples are mixed with flux, a carbon source (coal dust) and litharge (PbO).
The samples are then placed into a fusion/ refractory crucible, ready to go into the furnace. The high tempareture (1000 – 1200°C) melts the sample while the flux fuses with the gangue (non-precious material) and the now liquid lead collects all the precious metals. The newly-formed Pb-Au-Ag-PGE concoction migrates to the bottom of the crucible due to its high density.
As cooled lead sample is then separated from the glass waste (slag) with a hammer, and placed in a porous bone ash (MgO) crucible, ready for the cupellation step.
The sample is then placed in a muffle furnace at around 1000°C. The lead oxidises with the aid of the inflowing air from the furnace muffle and then immediately melts and is absorbed into the crucible, leaving behind what is known as a precious metal prill.
The prill is then analysed for its precious metal content through dissolving it in aqua regia (a mixture of hydrochloric and nitric acid) and the concentrations determined by spectroscopic methods (AAS, ICPAES, ICPMS).
Eventual detection limits are in the region of parts per billion but accuracy is usually in the region of 3 -5% for this metallurgical analytical technique.
L.O.I(loss on ignition)
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.
Wooden Case Dimension (mm)
7000 square meters work shop
Automatic production line
Longer working life
Yes, if asked, we will supply relevant technical details regarding XTL. Basic facts about the products, such as their primary materials, specs, forms, and primary functions, are readily available on our official website.
Regarding the attributes and functionality of the China Fire Assay Crucible Manufacture, it is a kind of product that will always be in vogue and offer consumers limitless benefits. It can be a long-lasting friend for people because it is constructed from high-quality raw materials and has a lengthy lifespan.
In essence, a long-standing China Fire Assay Crucible Manufacture organization runs on rational and scientific management techniques that were developed by smart and exceptional leaders. The leadership and organizational structures both guarantee that the business will offer competent and high-quality customer service.
The application of the QC process is crucial for the quality of the final product, and every organization needs a strong QC department. China Fire Assay Crucible Manufacture QC department is committed to continual quality improvement and focuses on ISO Standards and quality assurance procedures. In these circumstances, the procedure may go more easily, effectively, and precisely. Our excellent certification ratio is a result of their dedication.
In China, ordinary working time is 40 hours for employees who work full time. In Liling xing tai long special ceramic co.,ltd, most employees work abiding by this kind of rule. During their duty time, each of them devotes their full concentration to their work so as to provide customers with the highest-quality Zirconia ceramic and an unforgettable experience of partnering with us.
To draw in more users and consumers, industry innovators are continually developing its qualities for a larger range of application scenarios. Additionally, it can be customized for clients and has a reasonable design, all of which help grow the customer base and loyalty.
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