"selenium telurium cu"

Selenium (34-Se)

Selenium – Selenium (34 Se)Selenium adalah suatu unsur kimia dalam tabel periodik yang memiliki lambang Se dan nomor atom 34. Elemen ini ditemukan oleh Jöns Jacob Berzelius pada tahun 1817. Nama ini diambil dari Bahasa Yunani "Selene" yang berarti bulan. ...

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The Bi-Se (Bismuth-Selenium) System | SpringerLink

2007-4-1 · S A. Semiletov,"Electrographic Investigation of the Structure of Sublimed Films of the Composition BiSe and BiTe," Tr. Inst. Krist. Akad. Nauk SSSR, 10,76–83 (1954) in Russian (1956). (Meta Phases, Crys Structure; Experimental) G. Gattow and A. Schneider,"The Heat of Formation of Bismuth Chalcogenides," Angew.

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Dr. drg. Rosihan Adhani, S.Sos., M.S Dr. Husaini, SKM., M ...

2018-2-27 · element, logam berat esensial sepertitembaga(Cu),selenium(Se), Besi(Fe) dan Zink(Zn) dibutuhkan untuk menjaga metabolisme tubuh manusia. Sebaliknya logam logam berat yang nonesensial (elemen mikro) tidak mempunyai fungsi didalam tubuh manusia,

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Process for separating selenium and telurium from each ...

Major impurities in the precipitated tellurium were Se 1.35%, Ag 0.58%, and Cu 0.012%. Selenium was recovered in metallic form by reducing it with SO 2 at 85° C. for 60 minutes, followed by coking for 30 minutes. Major impurities in the selenium product were silver at about 0.1%, tellurium at about 0.01%, and copper at about 0.004%.

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Tellurium | History, Uses, Facts, Physical & Chemical ...

Tellurium is added to lead to improve its strength and resistance to corrosion. Tellurium is added in rubber which is helpful in curing process, less susceptible to aging and soften the normal rubber. Tellurium is the primary ingredient of blasting caps, explosive caps of TNT detonators etc. Tellurium is used as pigment for glass and ceramics.

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GEOKIMIA BIJIH DAN KONSENTRAT DARI CEBAKAN ...

menunjukkan unsur-unsur ikutan Te, Se, Pt dan Pd dari cebakan porfiri Cu-Au Grasberg bisa diambil dari lumpur anoda sebagai produk ikutan dari proses pemurnian bijih tembaga. Kata kunci: Porfiri, Grasberg, konsentrat, PGE, selenium, telurium ABSTRACT

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Toxicology of Selenium and Tellurium and Their …

@article{osti_4839340, title = {Toxicology of Selenium and Tellurium and Their Compounds}, author = {Cerwenka, Edward A. and Cooper, W. Charles}, abstractNote = {A comprehensive survey of the toxicological properties of selenium and tellurium and their compounds is presented. Although selenium has been used commercially for many years with no long-term systemic effects on industrial workers ...

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Mineral Composition of Copper Concentrates and …

around 16.5 Mt-Cu per year on average in 2017-2020. ... Telurium Clorine Antimonium Potassium Chromium Selenium Lead Calcium Molybdenum Arsenic Sodium Minor Metals in World Copper Concentrates Output Average 2017-2019 kt. Increasing arsenic …

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Daftar

Cu Tembaga 29 Zn Seng 30 Ga Galium 31 Ge Germanium 32 As Arsen 33 Se Selenium 34 Br Brom 35 Kr Kripton 36 Rb Rubidium 37 Sr Strontium 38 Y Itrium 39 Zr Zirkonium 40 Nb Niobium 41 Mo Molibden 42 Tc Teknetium 43 Ru Ruthenium 44 Rh Rodium 45 ...

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Green Synthesis of Selenium and Tellurium Nanoparticles ...

2021-1-20 · 1. Introduction. Nanotechnology has become one of the most promising interdisciplinary technologies, connecting physics, chemistry, biology, materials science, electronics, and medicine [].The quantity of engineered nanoparticles (NPs) is expected to increase significantly in the years to come as they receive growing global attention due to their attractive properties, multifunctionalities ...

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Green Synthesis of Selenium and Tellurium Nanoparticles ...

2021-1-20 · Selenium is an essential trace element for life [53,54]. It is an allotropic nonmetal usually red and grey present in nature under three forms: ... such as Cu 2+, Zn 2+, As 4+, and Se 4+, the reduction of Se(VI) to SeNPs is carried out by the sulfite reductase (CysIJ) ...

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Tellurium

2021-10-2 · Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur. It is occasionally found in native form as elemental crystals. Tellurium is far more common in the universe as a whole than on Earth. Its extreme rarity in …

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mp-19: Te (trigonal, P3_121, 152)

Te is alpha Selenium structured and crystallizes in the trigonal P3_121 space group. The structure is one-dimensional and consists of one Te ribbon oriented in the (0, 0, 1) direction. Te is bonded in a distorted water-like geometry to two equivalent Te atoms. Both Te–Te bond lengths are 2.89 Å.

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Recycling of tellurium via copper smelting processes ...

2020-2-4 · The feature of selenium dissolution mechanism in slags as an intermetallic was also discussed recently by Sukhomlinov et al. . Choi and Cho [ 16 ] studied earlier the behavior of tellurium in argon (and CO–CO 2 ) atmospheres (pSO 2 ≈ 0), through a wide (15–75 wt%) matte grade range with Ni–Cu mattes (Ni/Cu = 2) at 1250–1300 °C, using ...

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The Present, Mid-Term, and Long-Term Supply Curves …

2013-10-1 · 1. This curve is derived from the data and formulas represented in slides 10, 11, 12 and 15. For calculating the material intensity (I A) and $/W p cost, it is assumed that the medium-term thickness (d) is 1.5 micron, the Te utilization (U A) is 90%, the CdTe density is 6.20 g.cm-3, the recovery of Te in manufacturing (R A) is 5%, X

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Tellurium | Te

Tellurium is a relatively rare element, in the same chemical family as oxygen, sulfur, selenium, and polonium: oxygen and sulfur are nonmetals, polonium is a metal, and selenium and tellurium are semiconductors (i.e., their electrical properties are between those of a metal and an insulator). Nevertheless, tellurium, as well as selenium, is often referred to as a metal when in elemental form.

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Tellurium

It generally contains Cu, Ni, Se, Te, Ag, Au, platinum group metals (PGM), Pb, Ba, Fe, etc. Owing to the presence of valuable metals and metalloids in the anode slime, numerous approaches have ...

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Tellurium extraction from copper electrorefining slimes ...

1998-7-27 · The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slimes. The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes during leaching thereof in an autoclave.

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Tellurium

2020-11-21 · Selenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure. The chemical symbol for Selenium is Se . Selenium is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic.

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POTENSI PENINGKATAN NILAI TAMBAH DARI LOGAM ...

denum (Mo), stibnium (Sb), selenium (Se) dan telurium (Te) berkadar sangat rendah, tidak ekonomis untuk direkoveri tersendiri. Bahkan menurut smelter schedule (lihat Tabel 1), jika logam-logam tersebut melebihi kadar antara 0,001–0,03% di dalam konsentrat

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EKSTRAKSI EMAS DARI LUMPUR ANODA MELALUI ...

anoda yang mengandung sekitar 98% Cu dan masih mengandung berbagai unsur logam lain yang memiliki nilai tambah tinggi yaitu emas, perak, timbal, selenium, telurium dan beberapa logam dari grup platinum.Selanjutnya Jurnal Teknologi Mineral dan 100 ...

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Technical data for the element Tellurium in the Periodic …

2017-11-10 · Complete and detailed technical data about the element Tellurium in the Periodic Table.

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Tellurium

2020-11-13 · Tellurium is a chemical element with atomic number 52 which means there are 52 protons and 52 electrons in the atomic structure.The chemical symbol for Tellurium is Te. Electron Configuration and Oxidation States of Tellurium. Electron configuration of Tellurium is [Kr] 4d10 5s2 5p4. Possible oxidation states are +4,6/-2. Electron Configuration

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tellurium extraction from copper electrorefining slimes ...

Selenium Telurium Cu. Patent US5939042 Tellurium extraction from Tellurium extraction from copper electrorefining slimes be conditioned so that the ratio silver/selenium+tellurium in the anodes is Of Cu Refinery Slimes, T Get Price. SELENIUM AND TELLURIUM: STATE OF THE MARKETS, Selenium and tellurium are used as alloying additions in ferrous ...

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Oxygen, Sulfur, Selenium and Tellurium

Stefan Schlüter. The reaction of arsenic, arsenic trichloride and AlCl3 with sulfur or selenium, respectively, in closed glass ampoules at 80 °C leads to melts from which on slow cooling to 50 ...

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Clàr nan Eileamaidean

2019-4-17 · Iarann Còbalt Niceal Copar Sinc Gailium Gearmainium Arsnaig Selenium Telurium Polonium Ununhexium haidridean meatailtean eile gasaichean tàmhach meatailtean alcalaidh meataloighdean neo-mheatailtean meatailtean talmhaidh alcaileach feartan neo-aithnichte eileamaidean haloidean actanaich lantanaich meatailtean trastach Ce Th Pa U Np Pu Am Cm

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tellurium | chemical element | Britannica

tellurium (Te), semimetallic chemical element in the oxygen group (Group 16 [VIa] of the periodic table), closely allied with the element selenium in chemical and physical properties. Tellurium is a silvery white element with properties intermediate between those of metals and nonmetals; it makes

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Selenium

2009-8-19 · Selenium este un remediu homeopatic preparat din Seleniu, care este un element metaloid din coloana a XVI-a a tabelului periodic, împreună cu Oxigenul, Sulful, Teluriul şi Poloniul. Seleniul a fost descoperit în 1817 de chimistul suedez Berzelius şi a fost denumit aşa după Selena, zeiţa lună, întrucât a fost găsit în asociere cu alt element numit Telurium (pământ).

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