Pages

Categories

Fire Assay

What is Fire Assay ?

Fire assay is an analytical techmique usedin the determinaion of the qualty and purly of gold. This method dates back to ancient imes but has been refned and improved upon ove!the years.ire asay is an analyticaltechnique used inthe determinaion of the qualty and puityof gold. This method dates backto ancientimes buthas been refined and improvedupon over the years. Fire assay is an analyticaltechnique used inthe determination of the qualty and purity ofgold. This method dates back to ancient imes but has been refined and improved upon overthe years.

Fire Assay Process

Sample preparation

With Flux Dispensing and Mixing Devices, fire assay dosing and mixing can beachieved in a repeatable, traceable and operator-safe manner, while alsoincreasing laboratory productivity.

Fusion

The pulverized sample is weighed and mixed with a fluxing agent. Lead isadded as a collector. The sample is then heated in a fumace at about 1000degrees. During this process, the lead in the flux melts and collects the preciousmetals as it forms a low-melting-point alloy with them.

Cupellation

Following the fusion, the molten lead and the precious metals are placed in aporous cupel and reheated. The lead is absorbed by the cupel, leaving behinda bead composed of the precious metals. This is a critical step for purifying theprecious metals from the lead.

Weighing and Analysis

The resulting metal bead is weighed to determine the concentration of preciousmetals in the original sample. Further tests may be conducted to ascertain theexact content of gold and silver.

Subscription

Our Products

Side view of DECENT Fire Assay Fusion Furnace, showcasing its compact design and robust construction

Fusion Furnace

Side view of DECENT Fire Assay Fusion Furnace, showcasing its compact design and robust construction

Fusion Furnace

Cupellation Furnace

Cupellation Furnace

High Temperature Cupellation Muffle Furnace

High Temperature Cupellation Muffle Furnace

A collection of DECENT fire assay clay crucibles of different sizes, arranged on a white background.

Clay Crucible

A collection of DECENT fire assay clay crucibles of different sizes, arranged on a white background.

Clay Crucible

Magnesia Cupel

Magnesia Cupel

DECENT automated crucible tumbler or flux mixer machine with crucibles loaded, used for precise ore and flux blending.

Crucible Tumbler

DECENT automated crucible tumbler or flux mixer machine with crucibles loaded, used for precise ore and flux blending.

Crucible Tumbler

Automatic Flux Dispenser System

Automatic Flux Dispenser System

Assay Litharge

Assay Litharge

Electric Crucible Loader

Electric Crucible Loader

Multiload and Multipour System

Multiload and Multipour System

Silicon Carbide Heater

Silicon Carbide Heater

Furnace Chamber And Tile

Furnace Chamber And Tile

Side view of DECENT Fire Assay Fusion Furnace, showcasing its compact design and robust construction
Fusion Furnace
The DECENT Fire Assay Fusion Furnace is an essential, high-temperature laboratory furnace designed for...
→
Cupellation-Furnace主图04
Cupellation Furnace
The fire assay cupellation furnace can be customized according to specific needs, and optional laboratory...
→
High-Temperature-Muffle-Furnace主图02
High Temperature Cupellation Muffle Furnace
The maximum temperature of the DECENT high temperature muffle furnace can be adjusted up to 1500°C. The...
→
A collection of DECENT fire assay clay crucibles of different sizes, arranged on a white background.
Clay Crucible
DECENT premium Clay Crucibles, engineered for unparalleled performance in high-temperature fire assay...
→
Magnesia-Cupel主图01
Magnesia Cupel
Upgrade your fire assaying accuracy with DECENT Magnesia Cupel.Our Magnesium Oxide Container is crafted...
→
DECENT automated crucible tumbler or flux mixer machine with crucibles loaded, used for precise ore and flux blending.
Crucible Tumbler
Qingdao Decent Group Crucible Tumbler (also known as a Flux Mixer or Crucible Blender) is essential equipment...
→
Automatic-Flux-Dispenser-System主图02
Automatic Flux Dispenser System
The automatic flux dispenser system is a device that presets the dosage and accurately distributes the...
→
Assay-Litharge
Assay Litharge
Litharge is a special type of lead oxide. Highly pure lead oxide is used in the determination of gold...
→
Electric-Crucible-Pot-Loader主图01
Electric Crucible Loader
The electric crucible loader specially designed for laboratories can quickly and accurately transport...
→
Fire Assay Tools_场景_800x600
Multiload and Multipour System
Fire Assay Multiload and Multipour System (Integrated Fire Assay Solution) Core Function: A comprehensive,...
→
Silicon-Carbide-Heater主图01
Silicon Carbide Heater
Silicon Carbide heater is non-metallic heating elements made of high-purity green hexagonal silicon carbide....
→
Furnace Chamber And Tile_1624504220_800x600
Furnace Chamber And Tile
Furnace chambers and tiles are essential components in various high-temperature processes, especially...
→

Success Stories

successful internal product training
More +
A scientist in a lab coat holding a DECENT fire assay clay crucible, with a blurred laboratory background.
More +
The Different Types of Clay Crucibles
More +
More +
More +
More +
More +
More +
More +
More +

CONTACT US

To find out more about our products and solutions, please fil out the form below and one of our experts wil get back to you shortly.

QINGDAO DECENT GROUP consists of Decent Group Limited, Qingdao Decent Electromechanical Tech Co., Ltd., Qingdao Mars Labtech Co., Ltd. and Hunan Kilnsware Industrial Ceramics Co., Ltd.

Quick Links

product

  • Product1
  • Product2
  • Product3
  • Product4

Contact Us

Decent Group Limited

Qingdao Decent Electromechanical Tech Co., Ltd.

Qingdao Mars Labtech Co., Ltd.

Hunan Kilnsware Industrial Ceramic Co., Ltd.

Quick Links

Contact Us

  • Room 408 Huaren Building, No. 187 Zhuzhou Road, Laoshan District, Qingdao City, Shandong Province, China.

WHATSAPP

E-MAIL

Copyright © 2024 QINGDAO DECENT GROUP

Sitemap

Privacy Statement

Cookies Description

close menu icon

Your submission was successful.

Your submission was successful.