Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Acronyms, Wikipedia.


Dull, as applied to appearance of a surface.
An impure metallic sulfide mixture produced by smelting the sulfide ores of such metals as copper, lead, or nickel.



an intermediate product or a by-product in nonferrous metallurgy. A matte is an alloy of variable chemical composition that consists of iron sulfide and sulfides of nonferrous metals.

Owing to the low solubility of sulfides of nonferrous metals in oxide melts, the relatively low melting point (below 1100°C) of such sulfides, and the high density (greater than 4 g/cm3) of the sulfides, a molten matte separates from a slag upon smelting and forms a separate layer below the slag. A matte is a primary product into which copper, nickel, and cobalt go when a copper sulfide or nickel sulfide raw material is smelted or when oxide ores are processed by means of certain techniques. Mattes usually contain 10–50 percent Cu and Ni, 15–25 percent S, and Fe as the remainder.. Mattes are also produced in lead smelting when copper and sulfur are present in the raw material. As a rule, noble metals and metal impurities in raw materials accumulate in mattes.

Mattes are processed in a converter (seeCONVERTER BLOWING OF MATTE), where the sulfur is oxidized and the iron is converted from the sulfide form to the oxide form and, together with silica, yields converter slag. The copper sulfide and nickel sulfide are subjected to further processing after the iron is removed.

Nickel matte produced in smelting is sometimes called raw matte. A matte that is produced after converter blowing and has an iron content of less than 3 percent is referred to as converter matte. A matte with an intermediate iron content is known as furnace matte. Copper matte that is produced after the completion of the first blowing period and contains < 1 percent Fe is called white matte.


matte, mat, matt

A surface finish which is dull, with little or no gloss or sheen, and with low light reflectivity.
References in periodicals archive ?
The matte white plastic case straddles the matte white silicone strap with matching loop and matte white plastic buckle.
3 'For a classic 40s, "grown-up" look, match it with matte foundation and flicked eyeliner, but you can make it younger and fresher by using a dewy foundation, highligher on the cheeks, or shimmer on the eyes like Kate does,' says Chase.
Keith Schmidt: Matte tin uses a different additive system.
to Ulta3 adding at least one supplier's matte offerings.
The face is framed by a polished stainless steel bezel and case and presented with a matte black silicone strap with structure, black silicone loop and polished stainless steel half buckle.
The engraved bezel is made from polished stainless steel with gold-colored PVD, paired with a matte white structured rubber strap, white rubber loop and a polished stainless steel half buckle with gold-colored PVD.
Kay's compelling photography also showcases the paper and demonstrates a wide variety of printing techniques that can be used on Knightkote Matte.
The EPSON Stylus Photo R800 produces long-lasting photos which can resist fading up to 80 years(a) with Epson's optimized combination of EPSON UltraChrome Hi-Gloss Inks and Epson's matte or glossy media.
The letter-size PremierArt Matte Scrapbook Photo Paper comes with ArcSoft Collage Creator(TM) software, which enables users to easily print elements for a page or design complete scrapbook pages.
com Matte Silver Labels during product design or redesign to avoid production delays and potential quality issues down the road.
have rated the dark storage properties of EPSON Matte Scrapbooking Photo Paper with Epson inks well beyond 100 years without noticeable yellowing or other deterioration when stored in an album in archival sleeves.
Epson designed both printers to feature a new interchangeable black ink system that allows users to choose between the standard Photo Black ink cartridge and an optional Matte Black ink cartridge.