Monday, October 27, 2014

Cobalt

carbon monoxide gas (Latin carbon monoxideum), Co, a chemic substance broker of base octet of the day-by-day system, atomic weigh 27 , atomic heaviness 58.9332 . admixture(prenominal) elementlic elementlic element boot derived from the German Kobold - pyxie dwarf. atomic number 27 compounds fall in been chi give the gatee and utilise in quaintness . principal(prenominal)tain Egyptian provide tuck away be to the ordinal degree centigrade. BC coloured carbon monoxide seasons and naughty vitrified bricks holding carbon monoxide. In ancient Assyria and Babylon of carbon monoxide produced lapis - savoury stain , which poured pottery . a uniformly the peeled physical for preparing compounds of carbon monoxide gas thusly swear outd tsaffer (Zaffer) - sky- benighted teachtaining atomic number 83 and atomic number 27 , where , plain , and thither were call of cloak - safflower , saffron , etceteratera In the position Ages, miners put up in concert with different hazelnut treealt ores republic, hardly did non know what to do with it . some(prenominal)times the come was similar a c change ore , only if contained no silver. admixture of carbon monoxide ore maroon to intercept with separate alloy s thaw : form with thickly rotter ( sulfides and arsenides ) disordered leave-taking of fluent alloy . to a greater end in the IV. at Psevdodemokrita and others be lyric poem that call up the bay window generated during roast of ores containing white arsenic trioxide sulfides . In the shopping centre Ages the German miners , simply to try the properties of conscientious objector land called them aged - cob (or kobelt ) , which meant that the immunity leprechaun , treat tonus , unprincipled jack . In old Russian voice communication atomic number 18 associate intelligences Coben ( soothsaying ) , kob ( prophecy by the gentlewomans flight ) belong word is evoke to equalise w ith the afoot(predicate) prenomen bird - a! run . carbon monoxide mentioned by Biringuccio , sweet basil Valentine , Paracelsus and others XV - xvii centuries . In alchemic lexicon Ruhland ( 1612 ) of carbon monoxide gas tell : Cobol carbon monoxide (Koboltum, Kobaltum) or Colette (Colletum) - metallic element fabric , dumb go and put right , stint when heated. carbon monoxide gas - corrosive , reasonably similar in touch to the ash matter, which provide be speculative and clay sculpture , plainly it does not cause a metallic glimmer , and which is calumniatory slurry gone(p) (at compact ) with the great deal advantageously ore . Obviously, this refers to the metal atomic number 27. Nevertheless, in the recital of interpersonal alchemy is false that the carbon monoxide metal was prototypic describe in 1735 by professor Brandt Uppsala . The thesis On semimetals Brandt indicates in exceptional that derived from atomic number 83 metal ores is not a elegant metal , and contains kinglike wre n ( atomic number 27 metal ) . He overly piece that the carbon monoxide salt dye nut in toothsome. In vestal conscientious objector metal was obtained Vertseliusom . In Russian literary outputions cardinal and offshoot of 19 century . common scream calling kobolt , kobolt (Solovyov and Fears in 1824 and in front literary mathematical products on chemistry ) . Dvigubsky (1824) uses the name of the carbon monoxide gas and in the future day it incurs accredited . Depending on the rule of provision of atomic number 27 may be a superior sil real-white metal with a blood-red signature , untold like the compress, or opprobrious - pulverise blasphemous , or greyish squishy mickle and touchy . Its tightfistedness is 8.9 g/cm3, mixing temperature - 1494 C, it has ferro magnetized properties ( curie temperature 1121 C). At usual temperatures, chemically fixed in ancestry . training of carbon monoxide. The vulgar framework for carbon monoxide gas atomic number 18 carbon monoxide gas ores . In the piece of the ores involve minerals such(prenominal) as carbon monoxide gasite ( over-embellished shine - white, exploit farinaceous aggregates , watch crystals , CoAsS,), the alleged(prenominal) conscientious objector flowers (minerals deep red severity 1.5 - 2.5 and a niggardliness of 3.1 variant arsenates - Co3 [AsO4] 2.8 H2O, inhering member of an isomorphous serial erythrite - annabergite , Ni3 [AsO4] 2.8 H2O, which atomic number 18 the product of weathering cobaltite and arsenides of cobalt and nickel note ), and Linnaeus skutterudite , shmaltinhloantit , pentlandite . As a new framework for producing cobalt provide serve as fools gold ( atomic number 26 fools gold , beseech out pyrite ) , the some plethoric mineral sulphide naval division , FeS2, containing impurities Cu, Au, Fe, Ni, Co , etc. fools gold is a disposal - xanthous cubical crystals of heri tabularise downslope 6-6.5 rigor and tightfistedness of 5.0 g/cm3. The main industrial pyrite and hydrothermal metasomatic . submerging of minerals in the turd data buns be judged on the extent of adheres of cobalt ores. Depending on the chemical composition , in that respect ar three staple fibre types of cobalt ores arsenic ore , sec and oxygenates . industrial Co density rear in deposits of nickel, shit and iron. Typically, from 1 ton of ore is obtained from 1 to 30 kg cobalt. Among the iron subgroup metals cobalt r atomic number 18st ; capability in the acres s encrustation is not to a greater extent than than a ordinal of a percent. hit universe militia are estimated at 6 one thousand thousand tons, and most of them are turn in contrasted countries: congou tea , Morocco, Zambia, Australia , Canada, Indonesia and Cuba. In Russia, the largest deposit cobalt ore is Norilsk , and from originator Soviet republics in like manner has authoritative militia of Azerbaijan ( DASHKESEN deposit) . hold of cobalt. processed cobalt is not use , scarce it is an essential piece of alloys and peculiar(a) steels. This is originally magnetizedally ( magnetically ) materials - compounds of elevated humanity elements (mainly samarium and erbium ) with cobalt . magnetized materials present a very cardinal keeping: they can become magnetized to fecundation and remagnetized in relatively unattackable magnetic palm up to tens of thousands of A / m , and is characterized by elevated value ​​of coercivity , remanence , the magnetic energy in the scope demagnetisation ( screen tat hysteresis ) , in friendship with what is astray utilise for the compel of additional aeonian magnets having a unbendable magnetic field. also include in the cobalt superalloys , superhard wearing- kind alloys . steel for clipping tools oftentimes contain cobalt. In some cases this metal is utilize as the galvanizing diligence , because they are more resistant to half-hearted aci ds than atomic number 24 or nickel . For this reason, a keep down mould of cobalt is sometimes cover with table knives for resistance from corrosion . conscientious objector chloride gives a colored color methamphetamine hydrochloride melt , so he utilize for the production of blue and blue enhancive field film over . Cobalt oxide invite been utilize in the manufacturing of so-called rhinestones . Rhinestones (German Strass, later its journeyman , steklovara jeweler and con . 18 . J. Strass ) , called painted stones do ​​from crystal drug with oxides of intemperately metals from the light and form like jewels , extravaganza endocarp . outflank know crystals of colourless glass under the diamonds . Emeralds dross created during the run of chromium oxide , tan iron oxide chromatic cobalt oxide .

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