DFC Products

DFC

Ceramics

	Crucibles
	For over 131 years assayers have relied on DFC crucibles. DFC crucibles are designed to give dependable service at normal temperatures (1800°F to 2400°F).
	DFC melting crucibles are especially designed for melting gold, silver and other non-ferrous metals. These crucibles are widely used for refining and for melting other materials having melting points up to 2750°F.
	The complexity of some of the samples being analyzed has resulted in DFC Ceramics developing crucibles to match the arduous conditions required.

	Casting Crucibles
	DFC has designed Casting Crucibles for use in melting, pouring or transferring molten metals, or for melting glass or adding color to glass! We have a formula just right for you! These crucibles are available in Alumina, Fused Silica, Magnesia and Quartz. Quartz is our latest attempt to offer quality products for the high temperature range!

Annealing Cups
When verifying the completeness of parting and examining the gold for evidence of the platinum metals, use DFC Annealing Cups. Made of the finest selected fire clay, these cups are smooth and have an unglazed surface. Used for annealing gold buttons and for ignition of precipitates such as barium sulfate, copper sulfide and silica.

	Bone Ash
	Carefully processed natural tri calcium phosphate ground to exacting specifications to meet rigid screen analyses. Used for making bone ash and composite cupels for assaying. Supplied in four grades according to degree of fineness. Grade: XX and XXX packed in 25,50 and 100 lb. in addition to 200 lb. drums.

Ceramic Marking Crayons
DFC Ceramics Marking Crayons are made for the labeling or identification of ceramic goods in both industrial and laboratory uses. These crayons maintain their clarity up to 3000°F.
Ceramic crayons are used for labeling refractory in the field (bricks, boilers, castables, IFB) and laboratory testing. They are much easier and convenient to use than chrome paint.

DFC CUPELS: for analysis of precious metals
A Cupel is a small, shallow, porous vessel used in assaying to separate precious metals from less valuable elements such as lead or base metals.

DFC Ceramics has manufactured cupels since 1876 for the precious metals industry. We offer 10 sizes and four material compositions: premium bone ash, composite, white magnesite and grey magnesite.

Sizes available: 1", 1.25", 1.5", 1.75", 2", 56mm, 2.5"
(Industries: Jewelry, Precious Metal Mines with Fire Assay Labs, Precious Metal Refiners).

Roasting Dishes
Designed for metallurgical tests requiring the roasting of ores, assaying, incinerating coal and other chemical procedures. or as a vessel for containment while applying heat during a sintering process. Available in Colorado Mix (round), Fused Silica and Sillimanite (rectangular).

Furnace


DFC Ceramics has been the world leader in the manufacture of Fire Assay Fusion and Cupellation Furnaces for over 100 years. We make every furnace from 'beginning to end' and we will always carry the 'rebuild kits' for any furnace that we make.

For your special requirements, please contact us. Discount available on volume purchasing.

DISCOUNT AVAILABLE BASED ON VOLUME PURCHASING
Note: Minimum order requirement: $250 or $50 Handling Fee