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  • ویکیپدیا:ویکیپروژه شیمی/انجامدادنیها/موضوعات/متالورژی

    در زیر مجموعهای از صفحاتی که در ویکیپدیای انگلیسی در ردهٔ en:Category:Metallurgy موجود است ولی در ویکیپدیای فارسی موجود نیستند بر پایه تعداد میانویکی و حجم مقاله فهرست شدهاند. لطفا در ساخت این صفحات همکاری کنید.

  • Encyclopædia Britannica, Ninth Edition/Cobalt - Wikisource

    1. Smaltine or speiss cobalt, an arsenide of the isomorphous bases, cobalt, nickel, and iron, of the formula (CoNiFe)As 2 , is a mineral of the cubical system, forming steel or lead-grey crystals of a metallic lustre, tarnishing in damp air to a pink or green tint according to the pre ponderance of cobalt or nickel that is present In the purest condition it may contain 28 2 per cent, of cobalt

  • Lead - Academic Dictionaries and Encyclopedias

    Three additional layers separate in the process and float to the top of the metallic lead. These are slag (silicates containing 1.5% lead), matte (sulfides containing 15% lead), and speiss (arsenides of iron and copper). These wastes contain concentrations of copper, zinc, cadmium, and bismuth that can be recovered economically, as can their

  • Iowa Tar Sands Project Reports on the Canadian tar sands

    Dec 19, 2014· Jason Speiss from Building the Bakken Media Network, found that North Dakota has about 2,100 homeless people living in the state and 1,400 of those are unsheltered. [5] In short, Speiss specifies that the homeless population ranges from many

  • Blade Elemud Wiki Fandom

    Description These Slashing and Piercing weapons are wielded in one hand and tend to be unremarkable in their weight. The stronger the wielder, the more damage a Blade will do and both Fighters and Rangers tend to have a great many skills with Blades. Scabbards such as those from Mirrortown may be used to house these weapons, as well as most bags.

  • Industrial Metallurgy Metallurgy Alloy

    speiss: iron oxide, insoluble in matte, slag or metal; it may contain elements. Smelting of metal involves reduction, usually by carbon or coal or coke and may be performed in a blast furnace or an electric furnace. In the blast furnace, coke is burned into CO2 which reacts further with the carbon to form CO.

  • nickel smelting and refining process

    The product of this process was a white metal, known as finers metal or refined iron. Precious metals. Precious metal refining is the separation of precious metals from noble-metalliferous materials. Iron processing Britannica. Iron processing, use of a smelting process to turn the ore into a form from which products can be fashioned. Get Price

  • Arsenical bronze - Wikipedia

    Arsenical bronze is an alloy in which arsenic, as opposed to or in addition to tin or other constituent metals, is added to copper to make bronze.The use of arsenic with copper, either as the secondary constituent or with another component such as tin, results in

  • Iron Words - 500 Words Related to "Iron"

    Hi there! 🐶 Below is a massive list of iron words - that is, words related to iron. There are 500 iron-related words in total, with the top 5 most semantically related being steel, metal, alloy, nickel and pig iron.You can get the definition(s) of a word in the list below by tapping the question-mark icon next to it.

  • (PDF) The Iron Age Phoenician Shipwreck Excavation at Bajo

    PDF On Oct 12, 2009, Mark E. Polzer published The Iron Age Phoenician Shipwreck Excavation at Bajo de la Campana, Spain: Preliminary Report from the Field Find, read and cite all the research

  • Lead Alloys - an overview ScienceDirect Topics

    Arsenic is removed by adding scrap iron to form speiss. The residual tinindiumantimonylead alloy is cast into anodes and electrolyzed in a fluorosilicate solution, depositing tinlead alloy on the cathode and indiumantimony in the slimes. The slimes are roasted with sulfuric acid.

  • Speiss Article about Speiss by The Free Dictionary

    Speiss an intermediate product or by-product in nonferrous metallurgy, an alloy of arsenides and antimonides of iron, cobalt, nickel, copper, or other metals formed in the melting of raw materials with a high arsenic content. Cobalt speiss is formed in the melting of arseniccobalt raw materials.

  • FTDNA ancientOrigins [Archive] - Eupedia Forum

    Oct 24, 2017· " More recently, Thornton et al. (2009) proposed that an artificial iron-arsenic alloy, called speiss, was produced in Early Bronze Age Tepe Hissar, North Iran, presumably to be added to copper metal for the production of arsenical copper.

  • Second Life of Namtu Bawdwin-Shan States Forgotten Mines

    Jan 17, 2018· A guard showed me a room with a modern-looking Chinese-made iron furnace where silver, gold and lead were extracted. For a while back then, junior officials dug out a type of arsenic compound called speiss and sold it to Chinese buyers. It was like a festival, a local said, as money flowed through the area and gambling

  • Speiss - chemeurope

    Speiss is a molten phase consisting primarily of iron arsenide that is commonly encountered in lead smelting operations. References ^ Samans, Carl H. Engineering Metals and their Alloys, 1949 MacMillan

  • Challenges and Opportunities of a Lead Smelting Process

    Aug 19, 2018· Hino M (1995) Distribution of Minor Elements between Molten Lead and Iron Speiss, Zinc & Lead 95. In: Proceedings of the international symposium on the extraction and applications of Zinc and Lead, Sendai, pp 737746 Google Scholar. 13.

  • Appendix:Dictionary of Mining, Mineral, and Related Terms

    spathic iron. A native ferrous carbonite, also called siderite, containing 48% iron and usually traces of manganese. It is the best native ore for making steel tools by the direct method formerly used. See also: siderite. spathic iron ore. See: siderite. spathization

  • Ancient iron production - Wikipedia

    (January 2018) Ancient iron production refers to iron working in times from prehistory to the early Middle Ages where knowledge of production processes is derived from archaeological investigation.

  • How Lead is Mined & Refined: "A Story Of Lead" 1948 US

    These are slag (silicates containing 1.5% lead), matte (sulfides containing 15% lead), and speiss (arsenides of iron and copper). These wastes contain concentrations of copper, zinc, cadmium, and bismuth that can be recovered economically, as can their content of unreduced lead.

  • 4 cylinder upgrade information Mercedes-Benz Forum

    Jun 24, 2008· All M271 engines are built in Bad Cannstatt, Germany. The family has a cast iron engine block and aluminum DOHC cylinder heads. It uses SFI fuel injection, has 4 valves per cylinder with variable valve timing, is supercharged and intercooled, and features fracture-split forged steel connecting rods. The E18 is a 1.8 L (1796 cc) version.

  • Patient blood management a new paradigm for transfusion

    Oct 14, 2009· Anaemia management with iron (enteral or parenteral), haematinics and with or without erythropoiesisstimulating agents (ESAs) has been achieved in a wide range of clinical settings. Anaemia management is an important part of PBM and has been shown to result in the reduction or avoidance of transfusion [105, 107, 110, 130]. 2.

  • (PDF) Zebu, archaeometallurgy legacy of India. Zebu

    Iron, steel and ordinary magnetite are attracted to a magnetic field, including the Earth's magnetic field. Only magnetite with a particular crystalline structure, lodestone, can act as a natural magnet and attract and magnetize iron.

  • Speiss - definition of speiss by The Free Dictionary

    Define speiss. speiss synonyms, speiss pronunciation, speiss translation, English dictionary definition of speiss. n. An arsenic compound or a mixture of arsenic compounds resulting from the smelting of iron, cobalt, nickel, and copper ores.

  • SEVG Southeast Valley Gastroenterology Arizona

    SEVG is a recognized leader in diagnosis, treatment and prevention of gastrointestinal disorders. With locations in Chandler and Gilbert folks are referred to SEVG from throughout Phoenix and the Southwest.

  • Sciencemadness Discussion Board - separation of nickel

    Aug 10, 2012· "The copper-nickel or the cobalt-speiss is generally roasted in a state of powder (at a gentle heat at first, to prevent it from baking together), whereby the greater part of the arsenic is removed, the nickel oxidated, and a saving of nitric acid thus effected. precipitates all the iron, cobalt, and nickel with carbonate of soda

  • complex processing of slag scmmining

    Jun 01 2013 · companies that produce steel process slag or both has undertaken a slag is a complex matrix structure consisting primarily of oxides of calcium iron silicon » More detailed Processing of titanomagnetite ores Technologiya Metallov

  • Metallurgist & Mineral Processing Engineer

    For its extensive practical experience, 911 Metallurgist has a clear understanding of what successful mineral processing engineering is and how to go about achieving it.Your goal is the production of a material that is marketable and returns you and your investors sustainable revenues.

  • Processing of Complex Materials in the Copper Industry

    Jul 06, 2020· With the gradual decrease in the grade of copper ores being processed, copper concentrates have become more complex with higher impurity and gangue content. This trend has had a detrimental effect on smelters as they have to increase throughput to maintain copper metal production, while increasing operating costs due to processing the increased amounts of secondary products

  • Nickel and its compounds - Substances restricted under

    Speiss, lead, nickel-contg. Product obtained and separated during the melting of nickel and other non-ferrous metals containing raw materials. Consists primarily of

  • speiss - Wiktionary

    speiss (countable and uncountable, plural speisses) A mixed arsenide of iron (and cobalt , nickel , and copper ) produced during the smelting of lead Anagrams [ edit ]

  • FTDNA ancientOrigins - Page 2 - Eupedia

    Jun 06, 2011· " More recently, Thornton et al. (2009) proposed that an artificial iron-arsenic alloy, called speiss, was produced in Early Bronze Age Tepe Hissar, North Iran, presumably to be added to copper metal for the production of arsenical copper. Even though finds of speiss are relatively well-known from several EBA copper workshops, suggesting that

  • Speiss - definition of speiss by The Free Dictionary

    n. An arsenic compound or a mixture of arsenic compounds resulting from the smelting of iron, cobalt, nickel, and copper ores.

  • (PDF) Processing of Complex Materials in the Copper

    Iron oxide: Will require addition fluxing agent (silica) to keep Fe/SiO. 2. target. Increase in pyrite Increase in slag generation. metal (speiss) and solid phases in the Cu-AsS system are

  • Arzenov bron - Wikipedija, prosta enciklopedija

    Arzenov bron se pojavlja v arheoloških najdbah po celem svetu. Najstarejši znani primerki so z visoke iranske planote iz 5. tisočletja pr. n. št. Arzen je prisoten v številnih bakrovih rudah, prikazanih v Preglednici 1, zato se onečiščenju bakra z nekaj arzena na da izogniti. Kljub temu še vedno ni povsem jasno, kako so v prazgodovini bakru dodajali arzen: je bil prisoten v bakrovi

  • 8 valve engines - OEM, tuned + race outputs Club GTI

    Dec 10, 2013· On the heels of the 16-valve outputs thread, I've now compiled a stack of data on the original Golf GTI 8-valve engine.Production (UK, Europe, USA, Canada), tuner engine packages, all the way through to works rally, rallycross, Super Vee and F3.

  • Metal Fabrication Words - 500 Words Related to "Metal

    Hi there! 🕷 Below is a massive list of metal fabrication words - that is, words related to metal fabrication. There are 500 metal fabrication-related words in total, with the top 5 most semantically related being metal, lathe, platinum, metalliferous and pinchbeck.You can get the definition(s) of a word in the list below by tapping the question-mark icon next to it.

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