Product description:
1.Material: magnesium oxide
2.Featrue:, high thermal shock resistance
Packaging & shipping:
1.Packaging details: cartons with pallet
2.Delivery time: within 20 days
Usage:
Used for smelting and assaying , excluding gold and silver elements, more accurate test results, high temperature resistance and resistance to thermal shock .,
Specific techincal data
Production method:dry pressing
Typical chemical analysis
Mgo, 98.5%
Al2o3, 1.2%
Working temperature1300, ??-1350, ??
Specific gravity:2.35
Porosity:12%-15%
Lead absorption91%
Product specifications:
1.Made of fire clay
2.Used for smelting & assaying
3.High density & quality
Applications:
Precious metal analysis
Mining laboratory
Laboratory testing
Mineral assaying
Fire assaying
Gold assaying
Features:
Long lasting, can be used 3-5 times
High mechanical strength designed to withstand severe thermal shocks
Special formula, curing and pressing process
Multi-use crucible
Withstand extremely corrosive fire assay environments
Packaging & shipping:
Cartons with pallete, crates or as customer's requiements.
Usage:
Used for smelting and assaying , excluding gold and silver elements, more accurate test results, high temperature resistance and resistance to thermal shock . The average serial can be used for 3-5 times
Specific technical data
Production method:press forming
Typical chemical analysis
Sio269.84%
Al2o328%
Cao 0.14%
Fe2o31.90%
Working temperature1400??-1500??
Specific gravity:2.3
Porosity: 25%-26%
Specifications
Fire assay fluxes according to customers' recipe, or our own specification. Gold free and silver free type are available
The famous fire assay has been around for more than 500 years, but it still is the best method for determining the quantity of gold, platinium and other precious metals, thus widely used by gochemical assay laboratories. The fire assay process works by fusing or dissolving the rock sample in a crucible using a lead glass flux. Fluxes of various types are used on various types of ores. Most flux mixes may contain the following:
Litharge,
Sodium bicarbonate,
Silica,
Borax,
Flour,
Florite,
Etc.
Gemhold does custom manufacturing of lead monoxide(litharge) with qualified manufacturer in china, producing top grades of litharge from 99.5% - 99.9%min, which are widely used in fire assay, optical glass, piezo ceramic, and other industries. For fire assay industry, gemhold can produce assay grade litharge with very low gold and silver content, say, gold less than 1.5ppb, and silver less than 0.15ppm.
Gemhold can produce assay fluxes according to customers' recipe, or from our own standard. Our ability to product high quality litharge enable us to produce idea fluxes needed in the low level assay works. Our quality control system and semi-automatic manufacturing processes make our fluxes fully reliable. We can assay each batch of our flux if customers require that, and coa be be provided before despatching
