Customized 85mm Diameter Legend Crucibles High Hardness Small Size

Basic Information
Place of Origin: Hunan,China
Brand Name: ZEN
Model Number: ZEN-812
Minimum Order Quantity: 100PCS
Packaging Details: Kraft paper box,white box,egg tray
Delivery Time: 15-40 days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 2000000 Piece/Pieces per Month
Detail Information
Material:: Fire Clay Ceramic Shape: Round, Tapered Or According To Your Requirements
Dimensions:: Customized Packing: Custom Packing Acceptable
Port: Shenzhen,China Color: Milky White
Sample Days:: 5-12 Days Featrue:: High Casting Density;
Used: Used For Gold Ore Smelting, Melting,Assaying, Thermal Analysis Purpose :: Smelting, Melting,Assaying, Thermal Analysis
Application :: Used In Fire Assaying,Gold Assaying Application:: Fire Assaying, Gold Assaying, Precious Metal Analysis, Mineral Assaying, Laboratory Testing.
High Light:

customized legend crucibles


85mm legend crucibles

Product Description

                 Fire Assay Small Crucibles For Gold Melting


    Precious metal items of art or jewelry are frequently hallmarked (depending upon the requirements of the laws of either the place of manufacture or the place of import). Where required to be hallmarked, semi-finished precious metal items of art or jewelry pass through the official testing channels where they are analyzed or assayed for precious metal content. While different nations permit a variety of legally acceptable finenesses, the assayer is actually testing to determine that the fineness of the product conforms with the statement or claim of fineness that the maker has claimed (usually by stamping a number such as 750 for 18k gold) on the item. In the past the assay was conducted by using the touchstone method but currently (most often) it is done using X-ray fluorescence (XRF). XRF is used because this method is more exacting than the touchstone test. The most exact method of assay is known as fire assay or cupellation. This method is better suited for the assay of bullion and gold stocks rather than works of art or jewelry because it is a completely destructive method.


Product Introduction

Fire assay small crucibles for Gold Melting



1. Long lasting,can be used many times;

2. Can withstand extremely corrosive fire assay environments;

3.Can withstand repetitive thermal shocks from 1300 degree celcius to room temperature .


Chemical Composition

SiO2 38%-56%
Al2O3 45%-55%
Fe2O3 ≤1%
TiO2 0.47%
CaO 1.28%
MgO 0.34%
K2O 0.61%
Na2O 0.39%
L.O.l(loss on ignition) 0.21%


Size detail:

Top diameter 85mm;Bottom diameter 55mm;High 120mm.



1. Refractoriness:1650 centigrade degrees;

2. Refractoriness under load:1420 centigrade degrees;

3. We can supply kinds of fire assay crucibles export level,customize was acceptable, samples and performance requirement.


Customized 85mm Diameter Legend Crucibles High Hardness Small Size 1

Customized 85mm Diameter Legend Crucibles High Hardness Small Size 2Customized 85mm Diameter Legend Crucibles High Hardness Small Size 3


Contact Details

Phone Number : +8613657336605

WhatsApp : +8613657335616