Oxid hlinit\u00fd poskytuje vynikaj\u00facu odolnos\u0165 vo\u010di abr\u00e1zii, kor\u00f3zii, teplote a er\u00f3zii a dod\u00e1va sa v r\u00f4znych tvaroch, ve\u013ekostiach a triedach na pou\u017eitie.<\/p>\n
Taven\u00fd oxid hlinit\u00fd sa vyr\u00e1ba v bielej, hnedej a \u010diernej farbe, pri\u010dom ka\u017ed\u00e1 z nich m\u00e1 odli\u0161n\u00fa kry\u0161talick\u00fa \u0161trukt\u00faru a tvrdos\u0165. M\u00f4\u017ee sa lisova\u0165 za sucha, za tepla alebo odlieva\u0165 z p\u00e1sky pred vstrekovan\u00edm alebo lisovan\u00edm.<\/p>\n
Bauxit je miner\u00e1l hydroxidu hlinit\u00e9ho, ktor\u00fd sa nach\u00e1dza doma aj v zahrani\u010d\u00ed a ktor\u00fd zohr\u00e1va d\u00f4le\u017eit\u00fa hospod\u00e1rsku \u00falohu, preto\u017ee poskytuje zdroj oxidu hlinit\u00e9ho potrebn\u00e9ho na v\u00fdrobu kovov\u00e9ho hlin\u00edka. Okrem toho m\u00e1 bauxit aj mnoho \u010fal\u0161\u00edch vyu\u017eit\u00ed v r\u00f4znych priemyseln\u00fdch oblastiach.<\/p>\n
\u0164a\u017eba bauxitu m\u00f4\u017ee ma\u0165 ni\u010div\u00e9 environment\u00e1lne d\u00f4sledky. Vy\u017eaduje si odles\u0148ovanie, mas\u00edvne zne\u010dis\u0165ovanie ovzdu\u0161ia prachom a vytv\u00e1ranie rozsiahlych pust\u00edn nevhodn\u00fdch pre veget\u00e1ciu alebo pestovanie - a z\u00e1rove\u0148 je najv\u00e4\u010d\u0161\u00edm zdrojom CO2. Okrem toho m\u00e1 v\u00e1\u017ene zdravotn\u00e9 d\u00f4sledky, ke\u010f\u017ee bane potrebuj\u00fa na svoj chod ve\u013ek\u00e9 mno\u017estvo vody.<\/p>\n
Bauxit sa pou\u017e\u00edva najm\u00e4 na v\u00fdrobu oxidu hlinit\u00e9ho Bayerov\u00fdm procesom a tento oxid hlinit\u00fd sa potom m\u00f4\u017ee pou\u017ei\u0165 na r\u00f4zne \u00fa\u010dely vr\u00e1tane \u017eiaruvzdorn\u00fdch materi\u00e1lov a na zlievarensk\u00e9 \u00fa\u010dely - k\u013e\u00fa\u010dov\u00e9 komponenty pri v\u00fdrobe hlin\u00edka a ocele. Okrem toho bauxit obsahuje zna\u010dn\u00e9 mno\u017estvo g\u00e1lia, ktor\u00e9 sa v tomto procese extrahuje pomocou roztokov hydroxidu sodn\u00e9ho - alebo sa extrahuje in\u00fdmi sp\u00f4sobmi, napr\u00edklad pomocou i\u00f3novo-v\u00fdmenn\u00fdch \u017eiv\u00edc.<\/p>\n
Zvy\u0161ky bauxitu mo\u017eno pou\u017ei\u0165 aj ako \u00fa\u010dinn\u00fa n\u00e1hradu cementu v zmesov\u00fdch cementoch, \u010d\u00edm sa zv\u00fd\u0161i ich puzol\u00e1nov\u00e1 aktivita aj reologick\u00e9 vlastnosti. \u0160t\u00fadie preuk\u00e1zali, \u017ee a\u017e 25%-30% objemu zmie\u0161an\u00e9ho cementu mo\u017eno nahradi\u0165 t\u00fdmto zvy\u0161kom v z\u00e1vislosti od jeho zlo\u017eenia.<\/p>\n
Austr\u00e1lsky bauxitov\u00fd priemysel za\u017e\u00edva r\u00fdchly rozvoj a v s\u00fa\u010dasnosti sa uva\u017euje o nieko\u013ek\u00fdch projektoch. Dve lo\u017eisk\u00e1, DL130 a Rubble Flat v severoz\u00e1padnej Tasm\u00e1nii, sa zameriavaj\u00fa na povrchov\u00e9 bane na v\u00fdrobu DSO (deferred stripping ore). Obe lo\u017eisk\u00e1 sa nach\u00e1dzaj\u00fa v lesn\u00fdch porastoch ako zoskupen\u00e9 zvy\u0161ky hrebene dlh\u00e9 jeden alebo dva kilometre a \u010doskoro by sa mohli otvorene \u0165a\u017ei\u0165 na v\u00fdrobu DSO (deferred stripping ore).<\/p>\n
Projekt Amrun v severnom Queenslande bol schv\u00e1len\u00fd regula\u010dn\u00fdmi org\u00e1nmi a jeho \u0165a\u017eba sa za\u010dne za\u010diatkom roka 2019. Bauxit vyprodukovan\u00fd v r\u00e1mci tohto projektu sa bude pou\u017e\u00edva\u0165 v rafin\u00e9ri\u00e1ch Weipa a Mozal na v\u00fdrobu oxidu hlinit\u00e9ho a bude sa vyv\u00e1\u017ea\u0165 na \u010fal\u0161ie pou\u017eitie do cel\u00e9ho sveta. Amrun pon\u00fakne bezpe\u010dn\u00e9 dod\u00e1vky vysokokvalitn\u00e9ho bauxitu, ktor\u00fd uspokoj\u00ed celosvetov\u00fd dopyt.<\/p>\n
Hlin\u00edk je nepostr\u00e1date\u013en\u00fd materi\u00e1l, ktor\u00fd sa nach\u00e1dza v mnoh\u00fdch v\u00fdrobkoch na celom svete, od lietadiel a automobilov a\u017e po lietadl\u00e1, ktor\u00e9 lietaj\u00fa nad mrakmi, a elegantn\u00e9 automobily. Univerz\u00e1lnos\u0165, odolnos\u0165 a \u013eahk\u00e1 \u0161trukt\u00fara hlin\u00edka z neho robia ide\u00e1lny materi\u00e1l pre n\u00e1\u0161 ka\u017edodenn\u00fd \u017eivot, pri\u010dom si ho vy\u017eaduje mno\u017estvo aplik\u00e1ci\u00ed v r\u00f4znych odvetviach a pou\u017eitiach. Okrem toho jeho nekone\u010dne recyklovate\u013en\u00e9 vlastnosti robia z hlin\u00edka neocenite\u013en\u00e9ho spojenca pre podniky, ktor\u00e9 sa sna\u017eia zni\u017eova\u0165 emisie uhl\u00edka a z\u00e1rove\u0148 zvy\u0161ova\u0165 zisky a svoje hospod\u00e1rske v\u00fdsledky.<\/p>\n
Izola\u010dn\u00fd dr\u00f4t je hlavnou formou hlin\u00edkov\u00e9ho \u0161rotu. Tento dr\u00f4t sa nach\u00e1dza v k\u00e1bloch mobiln\u00fdch telef\u00f3nov, ploch\u00fdch telev\u00edzorov, notebookov, po\u010d\u00edta\u010dov\u00fdch monitorov a mnoh\u00fdch \u010fal\u0161\u00edch elektrick\u00fdch zariaden\u00ed. Izolovan\u00fd hlin\u00edkov\u00fd dr\u00f4t sa \u010dasto pred\u00e1va v recykla\u010dn\u00fdch centr\u00e1ch a na zbern\u00fdch dvoroch kv\u00f4li svojmu leskl\u00e9mu strieborn\u00e9mu vzh\u013eadu a obsahu hlin\u00edka 99% - \u013eahko sa identifikuje pod\u013ea leskl\u00e9ho strieborn\u00e9ho vzh\u013eadu a leskl\u00e9ho strieborn\u00e9ho odtie\u0148a - pri\u010dom izol\u00e1cia sa \u013eahko odlupuje a odha\u013euje pod \u0148ou \u010dist\u00fd hlin\u00edk, ktor\u00fd \u010dasto prekon\u00e1va aj ak\u00e9ko\u013evek oce\u013eov\u00e9 dr\u00f4ty, ktor\u00e9 s\u00fa do neho primie\u0161an\u00e9!<\/p>\n
Kovov\u00fd odpad sa \u010dasto pou\u017e\u00edva ako obetn\u00e1 elektr\u00f3da v Hall-Heroultovom elektrolytickom procese na v\u00fdrobu vysoko\u010dist\u00e9ho sekund\u00e1rneho hlin\u00edka, av\u0161ak po\u010das elektrol\u00fdzy sa m\u00f4\u017ee \u013eahko kontaminova\u0165 oxidom \u017eeleza, \u010do vedie k zna\u010dn\u00fdm strat\u00e1m kvality a zhor\u0161eniu kvality v\u00fdrobku. Inertn\u00e9 zliatinov\u00e9 an\u00f3dy vyroben\u00e9 zo \u017eelezn\u00e9ho \u0161rotu a hlin\u00edka predstavuj\u00fa atrakt\u00edvne udr\u017eate\u013en\u00e9 rie\u0161enie, ktor\u00e9 m\u00f4\u017ee pom\u00f4c\u0165 zn\u00ed\u017ei\u0165 z\u00e1kal, \u00farove\u0148 CHSK a farbu v procese EC flot\u00e1cie \u00fa\u010dinnej\u0161ie ako samotn\u00e9 an\u00f3dy na b\u00e1ze medi.<\/p>\n
Na zabezpe\u010denie kvality kone\u010dn\u00e9ho v\u00fdrobku je nevyhnutn\u00e9, aby sa suroviny a v\u00fdrobn\u00e9 procesy d\u00f4kladne monitorovali. Prenosn\u00e9 r\u00f6ntgenov\u00e9 fluorescen\u010dn\u00e9 analyz\u00e1tory sa stali v hlinik\u00e1renskom priemysle neuverite\u013ene ob\u013e\u00faben\u00fdmi pre svoju schopnos\u0165 zis\u0165ova\u0165 ne\u010distoty v prich\u00e1dzaj\u00facich aj odch\u00e1dzaj\u00facich v\u00fdrobkoch, \u010do pom\u00e1ha identifikova\u0165 potenci\u00e1lne nebezpe\u010dn\u00e9 kontaminanty, zefekt\u00edvni\u0165 v\u00fdrobn\u00fd proces a zn\u00ed\u017ei\u0165 prev\u00e1dzkov\u00e9 n\u00e1klady, ako aj pom\u00f4c\u0165 zabezpe\u010di\u0165 s\u00falad s environment\u00e1lnymi predpismi a bezpe\u010dnostn\u00fdmi normami.<\/p>\n
Pri rafin\u00e1cii bauxitu na hlin\u00edk vznik\u00e1 ako ved\u013eaj\u0161\u00ed produkt nadbytok oxidu kremi\u010dit\u00e9ho. Ak chcete tento ved\u013eaj\u0161\u00ed produkt efekt\u00edvnej\u0161ie zlikvidova\u0165 a zv\u00fd\u0161i\u0165 energetick\u00fa \u00fa\u010dinnos\u0165, presu\u0148te 1\/3 tohto ved\u013eaj\u0161ieho produktu krem\u00edka cez zlievarne hlin\u00edkov\u00fdch zliatin a taviarne elektr\u00f3d - hlin\u00edkov\u00e9ho \u0161rotu; t\u00fdm sa odstr\u00e1ni v\u0161etok ved\u013eaj\u0161\u00ed produkt krem\u00edk a z\u00e1rove\u0148 sa dosiahne v\u00e4\u010d\u0161ia \u00faspora energie a \u00fa\u010dinnos\u0165. T\u00e1to met\u00f3da simuluje skuto\u010dn\u00fa rafin\u00e1ciu pomocou Bayerov\u00fdch alebo Hall-Heroultov\u00fdch procesov s pou\u017eit\u00edm predpe\u010den\u00fdch uhl\u00edkov\u00fdch an\u00f3d namiesto v\u00fdroby vlastn\u00fdch.<\/p>\n
Roztok oxidu hlinit\u00e9ho alebo rozpt\u00fdlen\u00fd oxid hlinit\u00fd sa m\u00f4\u017ee rafinova\u0165 na \u010dist\u00e9 hlin\u00edkov\u00e9 ingoty na priemyseln\u00e9 pou\u017eitie v jednej z dvoch zlievarn\u00ed hlin\u00edkov\u00fdch ingotov, ktor\u00e9 vy\u017eaduj\u00fa rovnak\u00e9 mno\u017estvo elektrickej energie na jednotku vyroben\u00e9ho oxidu hlinit\u00e9ho.<\/p>\n
Recyklovan\u00fd hlin\u00edk m\u00e1 oproti v\u00fdrobe prim\u00e1rneho hlin\u00edka elektrol\u00fdzou nieko\u013eko v\u00fdhod. V prvom rade jeho v\u00fdroba v\u00fdrazne \u0161etr\u00ed spotrebu energie, zni\u017euje emisie sklen\u00edkov\u00fdch plynov a z\u00e1rove\u0148 \u0161etr\u00ed vz\u00e1cne pr\u00edrodn\u00e9 zdroje. Recyklovan\u00fd hlin\u00edk sa navy\u0161e m\u00f4\u017ee recyklova\u0165 donekone\u010dna bez straty kvality alebo dodato\u010dn\u00fdch n\u00e1kladov na zdroje - ide o neoddelite\u013en\u00fa s\u00fa\u010das\u0165 recykl\u00e1cie v kovopriemysle, ktor\u00e1 zni\u017euje dopyt zo strany spotrebite\u013eov, \u010d\u00edm sa zni\u017euj\u00fa n\u00e1klady na \u0165a\u017ebu\/\u0165a\u017ebu\/spracovanie odpadu a z\u00e1rove\u0148 sa \u0161etr\u00ed spotreba energie, preto\u017ee na jeho v\u00fdrobu sa spotrebuje a\u017e o 95% menej energie ako pri \u0165a\u017ebe surov\u00edn! Recykl\u00e1cia tie\u017e v\u00fdznamne prispieva k \u0161etreniu energie v porovnan\u00ed s v\u00fdrobou prim\u00e1rneho hlin\u00edka zo surov\u00edn; \u010fal\u0161ia \u00faspora energie sa dosahuje v\u010faka zn\u00ed\u017eeniu emisi\u00ed sklen\u00edkov\u00fdch plynov, ako aj \u0161etreniu pr\u00edrodn\u00fdch zdrojov a \u0161etreniu \u0165a\u017eby\/\u0165a\u017eby t\u00fdm, \u017ee sa namiesto priamo \u0165a\u017een\u00fdch surov\u00edn vyr\u00e1ba recyklovan\u00fd hlin\u00edk.<\/p>\n
Ingoty sl\u00fa\u017eia ako v\u00fdchodiskov\u00fd materi\u00e1l pre v\u0161etky kov\u00e1\u010dske pr\u00e1ce v hre a pou\u017e\u00edvaj\u00fa sa na v\u00fdrobu zbran\u00ed, n\u00e1strojov a padac\u00edch dver\u00ed. Dvojit\u00e9 ingoty mo\u017eno tie\u017e kombinova\u0165 na vytvorenie dvojit\u00fdch \u017eelezn\u00fdch pr\u00fatov (alebo pln\u00fdch zlat\u00fdch pr\u00fatov). Na kovadline sa z nich m\u00f4\u017eu vyr\u00e1ba\u0165 aj predmety ako bloky a brnenia.<\/p>\n
V\u00fdroba ingotov je neoddelite\u013enou s\u00fa\u010das\u0165ou ka\u017ed\u00e9ho priemyseln\u00e9ho z\u00e1vodu, ktor\u00e1 si vy\u017eaduje ve\u013ek\u00e9 mno\u017estvo elektrickej energie a spotrebu uhlia\/\u017eeleznej rudy na prev\u00e1dzku pece, pri\u010dom niektor\u00e9 typy ingotov m\u00f4\u017eu produkova\u0165 toxick\u00fd odpad, ktor\u00fd si vy\u017eaduje \u0161peci\u00e1lne postupy pri manipul\u00e1cii\/likvid\u00e1cii - z\u00e1kladn\u00e9 prvky bezpe\u010dnosti z\u00e1vodu a dodr\u017eiavania pr\u00e1vnych predpisov v oblasti \u017eivotn\u00e9ho prostredia.<\/p>\n
Technol\u00f3gia odlievania ingotov Wagstaff(tm) LHC (Low Head Composite Rolling) m\u00f4\u017ee v\u00fdrazne zn\u00ed\u017ei\u0165 v\u00fdrobn\u00e9 n\u00e1klady zn\u00ed\u017een\u00edm spotreby energie a oleja a zv\u00fd\u0161en\u00edm v\u00fd\u0165a\u017ekov z j\u00e1m minimalizovan\u00edm napu\u010diavania tup\u00fdch \u010dast\u00ed ingotov a in\u00e9ho odpadu pri spracovan\u00ed.<\/p>\n
Technol\u00f3gia Wagstaff APEX (Application Specific Ingot Casting Technology) sa vyzna\u010duje recept\u00farou riaden\u00fdm oh\u00fdban\u00edm otvoru formy, ktor\u00e9 optimalizuje tvar ingotu pre takmer v\u0161etky zliatiny a r\u00fdchlosti odlievania, \u010d\u00edm sa v\u00fdrazne zni\u017euje napu\u010diavanie tupej \u010dasti a v\u00fdsledkom s\u00fa kvalitnej\u0161ie a plochej\u0161ie ingoty.<\/p>\n
Ingoty sa daj\u00fa pou\u017ei\u0165 na v\u00fdrobu z\u00e1kladn\u00fdch predmetov, ako s\u00fa kovov\u00e9 kromp\u00e1\u010de alebo sekery, ale daj\u00fa sa aj roztavi\u0165 na v\u00fdrobu zlo\u017eitej\u0161\u00edch predmetov, ako s\u00fa remeseln\u00e9 stoly alebo pracovn\u00e9 stoly. Okrem toho s\u00fa ingoty potrebn\u00e9 na v\u00fdrobu Palov, ktor\u00e9 sa daj\u00fa vozi\u0165 po svete ako pozemn\u00e9 alebo lietaj\u00face dr\u017eiaky, a klincov, ktor\u00e9 je potrebn\u00e9 vytvori\u0165 pre predmety vy\u0161\u0161ej \u00farovne a pracovn\u00e9 stoly v z\u00e1kladni.<\/p>","protected":false},"excerpt":{"rendered":"
Alumina offers excellent abrasion, corrosion, temperature and erosion resistance and comes in various shapes, sizes and grades for use. Fused […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[6],"tags":[],"class_list":["post-48","post","type-post","status-publish","format-standard","hentry","category-alumina-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/posts\/48","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/comments?post=48"}],"version-history":[{"count":1,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/posts\/48\/revisions"}],"predecessor-version":[{"id":49,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/posts\/48\/revisions\/49"}],"wp:attachment":[{"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/media?parent=48"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/categories?post=48"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aluminaceramics.net\/sk\/wp-json\/wp\/v2\/tags?post=48"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}