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fenp1033 tsbasedon0 tsnext19 Plain TextSIts20tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsnext20 Implies ListSIts21tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsbasedon29 tsnext21 Upper Case ListSIts22tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsnext22 Hand ListSIts23tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsbasedon29 tsnext23 Upper Roman ListSIts24tql tli1440tri1440tsa120tnoidctlpartfaautotrin1440tlin
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p1033 tsbasedon0 tsnext24 Block TextSIts25tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsbasedon0 tsnext25 Loer Roman ListSIts26tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsnext26 Heart ListSIts27tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsbasedon29 tsnext27 Loer Case ListSIts28tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsnext28 Tick ListSIts29tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsnext29 Numbered ListSIts30tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsnext30 Star ListSIts31tql tli0tri0tnoidctlparttx431tfaautotrin0tlin0titap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsbasedon1 tsnext0 Numbered Heading 1SIts32tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
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p1033 tsnext32 Diamond ListSIts33tql tli0tri0tnoidctlparttx431tfaautotrin0tlin0titap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsbasedon3 tsnext0 Numbered Heading 3SIts34tql tli0tri0tnoidctlparttx1584tfaautotrin0tlin0titap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsbasedon31 tsnext0 Chapter HeadingSIts35tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
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p1033 tsnext35 Square ListSIts36tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
ap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 tsnext36 Triangle ListSIts37tql tfi-431tli720tri0tnoidctlpartfaautotrin0tlin720tit
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p1033 tsnext37 Bullet ListSSIttlisttableItlisttlisttemplateid603986325tl
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tpntxtb SItpntxta SSIttpnseclvl8tpnlcltrtpnstart1tpnindent720tpnhang
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tpntxtb SItpntxta SStpardtplain tql tli0tri0tnoidctlpartfaautotrin0tlin0titap0 tfs24tlang1033tlangfe1033tcgridtlangnp1033tlangfen
p1033 Itpar tpar tpar Stpard tqc tli0tri0tkeepntnoidctlpartfaautotrin0tlin0titap0 Itbtfs36tul AluminiuSItfs20 tpar Stpard tqj tli0tri0tnoidctlpartfaautotrin0tlin0titap0 Itpar SItfs28 ttab SItbtfs28 Raspte2ndire teen naturSItfs28 Al este cel mai rsspte2ndit metal teen natur el alcttuiette 7,4 din scoaraa pmmte2ntului. Al nu exist teen stare nativ.. Dintre mineralele SItf92tfs28 mai importante sunt micele, feldspaiii respectiv ii produsele de alterare ale acestora caolinul ii argila, corindonul ii variettfeiile lui, bauxita apoi criobitul.SItfs20 tpar SItpar SItfs28 ttab SItbtfs28 PreparareSItfs28 Fabricarea Al comport dou etape a fabricarea oxidului de AlSItfs20 tpar Itpntexttpardtplaintfs28 thichtaf0tdbchtaf0tlochtf0 bttabSStpard tqj tli0tri0tnoidctlparIttpn tpnlvlbodytilvl0tls1tpnrnot0tpnlcltrtpnstart2tpnin
dent360tpnsp120 Itpntxta SStfaautotls1trin0tlin0titap0 Itfs28 ttab ttab ttab ttab ttab ttab ttab ttab b obiinerea Al din aluminttab SItpar Itpntexttpardtplaintf92tfs28 thichtaf92tdbchtaf0tlochtf92 attabSStpard tqj tli0tri0tnoidctlparIttpn tpnlvlbodytilvl0tls2tpnrnot0tpnlcltrtpnstart1tpnin
dent360tpnsp120 Itpntxta SStfaautotls2trin0tlin0titap0 Itf92tfs28 Al , mai ales acela destinat construciiilor de avioane nu trebuie s coniin nici fier nici siliciu. De aceea cte2nd bauxitele coniin cantittfeSItfs28 ii mai mari de fier ii de siliciu, ele trebuie supuse unor tratamente prealabile de purificare.SItpar Stpard tqj tfi720tli720tri0tnoidctlparIttpn tpnlvlconttilvl0tls0tpnrnot0tpndec Stfaautotrin0tlin720titap0 Itfs28 Procedeul Bayer este unul dintre cele mai rsspte2ndite procedee pentru fabricarea aluminei din bauxite srrace teen fier ii siliciu. tcen acest procedeu, bauxita, teen prealabil calcinat ii mccinat,, este tratat cu hidroxid de sodiu, teen autoclave, la 4 tendash 6 at ii 160 tendash 180 C. Oxidul de Al din bauxit trece teen soluiie sub form de aluminat de sodiu NaiAlOHSItfs28tsub 4SItfs28 s. Amestecul se filtreaz,, separte2ndu-se soluiia de aluminat de sodiu de hidroxizii de fier ii de combinaiiile siliciului cu aluminatul de sodiu.SItfs20 tpar Stpard tqj tli720tri0tnoidctlparIttpn tpnlvlconttilvl0tls0tpnrnot0tpndec Stfaautotrin0tlin720titap0 Itfs28 ttab tcen soluiia cu aluminat de sodiu se introduce fie un curent de bioxid di carbon, cte2nd precipit hidroxidul de Al.SItfs20 tpar SItpar SItfs28 2NaiAlOHSItfs28tsub 4SItfs28 s C...
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