{"id":1161,"date":"2019-10-05T17:46:19","date_gmt":"2019-10-05T14:46:19","guid":{"rendered":"http:\/\/akmasmadencilik.com\/?page_id=1161"},"modified":"2020-01-21T01:31:57","modified_gmt":"2020-01-20T22:31:57","slug":"manyezit-nedir","status":"publish","type":"page","link":"https:\/\/akmasmadencilik.com\/index.php\/manyezit-nedir\/","title":{"rendered":"MANYEZ\u0130T NED\u0130R?"},"content":{"rendered":"

<\/p>\n

MANYEZ\u0130T<\/span><\/b>(MgCO<\/span><\/b>3<\/span><\/b>)<\/span><\/b><\/p>\n

\n<\/div><\/div><\/div><\/div><\/div><\/section>

<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parametreler<\/b><\/td>\n\u00d6zellikler<\/b><\/td>\n<\/tr>\n
Kimyasal Bile\u015fimi<\/td>\nMgCO3<\/td>\n<\/tr>\n
Kristal Sistemi<\/td>\nHekzagonal<\/td>\n<\/tr>\n
Kristal Bi\u00e7imi<\/td>\nKristalleri yayg\u0131n de\u011fildir; genellikle
\nrombohedral, nadiren prizmatik; levhamsi,
\nmasif, kompakt, orta-ince taneli, tebe\u015firimsi, bazen lamelli yada lifsi<\/td>\n<\/tr>\n
Sertlik<\/td>\n3,5-4,5 mohs<\/td>\n<\/tr>\n
\u00d6zg\u00fcl A\u011f\u0131rl\u0131k<\/td>\n2,7-3,1<\/td>\n<\/tr>\n
Dilinim<\/td>\n{1011} M\u00fckemmel<\/td>\n<\/tr>\n
Renk ve \u015eeffafl\u0131k<\/td>\nRenksiz, beyaz, gri, sar\u0131ms\u0131-kahverengi,
\n\u015feffaf, yar\u0131 \u015feffaf<\/td>\n<\/tr>\n
\u00c7izgi Rengi<\/td>\nBeyaz<\/td>\n<\/tr>\n
Parlakl\u0131k<\/td>\nCams\u0131, donuk, mat<\/td>\n<\/tr>\n
S\u00f6nme<\/td>\nDilinim izlerine g\u00f6re simetrik s\u00f6nme g\u00f6sterir.<\/td>\n<\/tr>\n
Ay\u0131r\u0131c\u0131 \u00d6zellikleri<\/td>\nKalsitte oldu\u011fu gibi, so\u011fuk seyreltik HCI’ den etkilenir ve k\u00f6p\u00fcrerek \u00e7\u00f6z\u00fcn\u00fcr.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n<\/div><\/div><\/div>

<\/p>\n

Manyezit, bir magnezyum karbonat mineralidir ve yer kabu\u011funda % 1,39 oranla en \u00e7ok bulunan sekizinci element ve saf iken renksiz, di\u011fer hallerde beyaz, sar\u0131, gri ve siyaha kadar de\u011fi\u015fen renklerde bulunan bir mineraldir.<\/strong><\/p>\n

Manyezit; form\u00fcl\u00fc MgCO3<\/sub> olup, teorik olarak bile\u015fiminde %52.3 CO2<\/sub>, %47.7 MgO ve \u00e7ok az miktarda Fe2<\/sub>O3<\/sub> bulunan, sertli\u011fi 3.4-4.5 aras\u0131nda, \u00f6zg\u00fcl a\u011f\u0131rl\u0131\u011f\u0131 2.9-3.1 olan mineraldir.<\/strong><\/p>\n

\u0130lk kez 1808 y\u0131l\u0131nda manyezit ad\u0131yla kullan\u0131lan mineral, yayg\u0131n bir kullan\u0131m alan\u0131na sahiptir.<\/strong><\/p>\n

Manyezitin\u00a0 ana kullan\u0131m alan\u0131 ate\u015fe dayan\u0131kl\u0131 malzemeler olarak tan\u0131mlanan refrakter malzemelerin kullan\u0131ld\u0131\u011f\u0131 sanayidir. Avrupa Kritik Hammaddeler Birli\u011fi verilerine g\u00f6re, d\u00fcnyada \u00fcretilen manyezitin % 84\u2019\u00fc \u00e7elik, \u00e7imento ve di\u011fer refrakter malzemelerin \u00fcretimininde kullan\u0131lmaktad\u0131r. \u00dcretilen Manyezitin geri kalan% 16’s\u0131 ise \u00e7evre, tar\u0131m ve spor malzemeleri gibi di\u011fer uygulama alanlar\u0131nda kullan\u0131lmaktad\u0131r.<\/strong><\/p>\n

\u00d6rne\u011fin, demir-\u00e7elik end\u00fcstrisinde bir ton ham demir i\u00e7in 13,6 kg metalik magnezyum e\u015f de\u011feri manyezit t\u00fcketilmektedir. Manyezit ve magnezyumun \u00e7imento sanayisinden ila\u00e7 end\u00fcstrisine, boya \u00fcretiminden refrakter tu\u011fla yap\u0131m\u0131na kadar yakla\u015f\u0131k 80 kadar de\u011fi\u015fik kullan\u0131m alan\u0131 mevcuttur.<\/strong><\/p>\n

\n<\/div><\/div><\/div><\/div><\/div><\/section>

<\/p>\n

Manyezit Nerelerde \u00dcretilir?<\/span><\/strong><\/h3>\n

\u00c7in d\u00fcnyadaki en b\u00fcy\u00fck manyezit \u00fcreticisidir. \u00dclkemiz en \u00f6nemli manyezit \u00fcreticisi olan \u00fclkeler i\u00e7erisindedir.T\u00fcrkiye y\u00fcz \u00f6l\u00e7\u00fcm\u00fcn\u00fcn yakla\u015f\u0131k % 85’inin manyezit olu\u015fumuna uygun ultrabazik k\u00f6kenli kaya\u00e7larla kapl\u0131 olmas\u0131n\u0131n do\u011fal sonucu olarak, \u00fclkemiz \u00f6nemli manyezit yataklar\u0131na sahiptir. Yap\u0131lan \u00e7al\u0131\u015fmalar sonucunda 28 de\u011fi\u015fik il s\u0131n\u0131rlar\u0131 i\u00e7erisinde manyezit zuhuruna rastlanm\u0131\u015ft\u0131r. \u00dclkemizdeki manyezit yataklar\u0131n\u0131n en \u00f6nemlileri Eski\u015fehir, Bursa, Bal\u0131kesir, Konya, Bilecik ve Erzincan illerindedir. T\u00fcrkiye\u2019de manyezit olu\u015fumlar\u0131 sedimanter kaya\u00e7lara ve altere ultramafiklere ba\u011fl\u0131 olarak bulunmaktad\u0131r. \u00dclkemizde serpantinle\u015fmi\u015f ultramafik kaya\u00e7lar\u0131n k\u0131r\u0131k ve \u00e7atlaklar\u0131nda damar ve stokverk (a\u011fs\u0131) \u015feklinde olu\u015fmu\u015f manyezit yataklar\u0131 daha yayg\u0131nd\u0131r.<\/strong><\/p>\n

Manyezitin Di\u011fer \u00d6zellikleri;<\/span><\/b><\/b><\/p>\n

ekonomik olup olmamas\u0131n\u0131 do\u011frudan etkileyen ve ay\u0131klanmas\u0131 gereken en \u00f6nemli safs\u0131zl\u0131klar silis (SiO2<\/sub><\/a>) ve kire\u00e7 (CaO) i\u00e7eri\u011fidir. Cevherin sat\u0131labilmesi i\u00e7in silis i\u00e7eri\u011fi % 2’den ve kire\u00e7 i\u00e7eri\u011fi % 1,5’den az olmal\u0131d\u0131r. Silis i\u00e7eri\u011fi hemen her manyezit yata\u011f\u0131nda yan kaya\u00e7 olarak bulunan serpantinden kaynaklanmaktad\u0131r. G\u00f6zle g\u00f6r\u00fcn\u00fcr renk ve yo\u011funluk farklar\u0131 sayesinde, ye\u015filimsi sar\u0131 renkli serpantin ile beyaza yak\u0131n sar\u0131 renkli manyezit kolayca ay\u0131rt edilebilir niteliktedirler.<\/strong><\/p>\n

Magnezyum gerek metal olarak ve gerekse bile\u015fik halinde bug\u00fcnk\u00fc teknolojinin \u00f6nemli bir hammaddesidir. En geni\u015f magnezyum t\u00fcketimi, magnezyum bile\u015fikleri \u015feklinde ger\u00e7ekle\u015fmektedir (MgO, MgCl2<\/sub>, Mg(OH)2<\/sub>, MgSO4<\/sub> vb.). B\u00fct\u00fcn bunlar\u0131n ba\u015f\u0131nda toplam d\u00fcnya t\u00fcketiminin % 80\u2019ini kapsayan ve magnezya ad\u0131 verilen MgO (Sinter Manyezit) bulunmaktad\u0131r. Zira MgO y\u00fcksek ergime noktas\u0131 nedeni ile refrakter malzeme end\u00fcstrisinin en \u00f6nemli girdisi durumundad\u0131r.<\/strong><\/p>\n

Sinter manyezit yada magnezya (MgO), \u00e7o\u011funlukla manyezitin kalsinasyonu vas\u0131tas\u0131yla \u00fcretilir. Bunun i\u00e7in, manyezit cevheri, 1400-1800<\/strong>\u00b0C s\u0131cakl\u0131\u011fa kadar \u0131s\u0131t\u0131l\u0131r, karbonatlar CO2 <\/sub>olarak ortamdan uzakla\u015f\u0131r ve magnezya (MgO) \u00fcretilmi\u015f olur. \u0130\u015fte bu magnezyan\u0131n ve hatta di\u011fer magnezya bile\u015fiklerinin en \u00f6nemli kayna\u011f\u0131 manyezit\u2019tir.<\/strong><\/p>\n

Kaynaklar:<\/span><\/b><\/p>\n

(i) http:\/\/criticalrawmaterials.org\/magnesite\/<\/strong><\/p>\n

(ii)http:\/\/www.mta.gov.tr\/v3.0\/bilgi-merkezi\/manyezit<\/strong><\/p>\n

(iii)https:\/\/dergipark.org.tr\/tr\/pub\/erciyesfen\/issue\/25567\/269708<\/strong><\/p>\n

(iv)http:\/\/www.marbleport.com\/dogal-kaynaklar\/51\/manyezit<\/strong><\/p>\n

(v)https:\/\/www.makaleler.com\/manyezit-nedir-nerelerde-kullanilir<\/strong><\/p>\n

(vi)http:\/\/www.maden.org.tr\/resimler\/ekler\/c7a167bb329bd92_ek.pdf <\/strong><\/p>\n

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