Fire Assay Crucible For Gold Assaying

    The distribution of gold seems to validate the theory that gold was carried toward the Earth's surface from great depths by geologic activity, perhaps with other metals as a solid solution within molten rock. After this solid solution cooled, its gold content was spread through such a great volume of rock that large fragments were unusual; this theory explains why much of the world's gold is in small, often microscopic particles. The theory also explains why small amounts of gold are widespread in all igneous rocks; they are rarely chemically combined and seldom in quantities rich enough to be called an ore. Because of its poor chemical reactivity, gold was one of the first two or three metals (along with copper and silver) used by humans in these metals' elemental states. Because it is relatively unreactive, it was found uncombined and required no previously developed knowledge of refining. Gold was was probably used in decorative arts before 9000 BC. Even civilizations that developed little or no use of other metals prized gold for its beauty.

Product Introduction

Fire assay crucible For Gold Assaying

Applications

Precious Metal Analysis

Mining Laboratory

Laboratory Testing

Mineral Assaying

Fire Assaying

Gold Assaying

Crucible used for lab

Features:

1. High refractoriness,no cracking;

2. Good corrosion resistance;

3. Good thermal shock resistance;

4. No hanging residue, impermeable,the export series can use 3-5 times,it is the superduper container for fire assay.

Size detail:

Top diameter 106mm;Bottom diameter 58mm;High 150mm.

Notes:

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.