Yaya ake tantance darajar ajiyar tagulla?

Yaya ake tantance darajar ajiyar tagulla?

Akwai abubuwa da yawa da za a yi la'akari da lokacin da aka ƙayyade ƙimar ajiyar tagulla.Daga cikin wasu dalilai, dole ne kamfanoni suyi la'akari da daraja, farashin tacewa, ƙididdiga albarkatun tagulla da sauƙi na hakar tagulla.A ƙasa akwai ɗan taƙaitaccen bayani na abubuwa da yawa da za a yi la'akari da su lokacin tantance ƙimar ajiyar tagulla.

1

Wadanne nau'ikan ajiyar tagulla ne akwai?

Adadin jan ƙarfe na Porphyry ba su da daraja amma suna da mahimmancin tushen tagulla saboda ana iya haƙa su akan babban sikeli akan farashi mai sauƙi.Yawanci sun ƙunshi 0.4% zuwa 1% jan karfe da ƙananan adadin wasu karafa kamar molybdenum, azurfa da zinariya.Adadin jan ƙarfe na Porphyry yawanci suna da yawa kuma ana fitar da su ta hanyar buɗaɗɗen ma'adinai.

Duwatsu masu ɗauke da tagulla sune nau'i na biyu mafi mahimmanci na ma'ajiyar tagulla, suna lissafin kusan kashi ɗaya cikin huɗu na ma'adinan tagulla da aka gano a duniya.

Sauran nau'ikan ajiyar tagulla da ake samu a duniya sun haɗa da:

Volcanogenic massive sulfide (VMS) adibas ne tushen jan karfe sulfide kafa ta hanyar hydrothermal al'amurran da suka shafi a cikin teku yanayi.

Iron Oxide-Copper-Gold (IOCG) ma'adinan ma'adanai masu daraja ne na jan karfe, zinare da uranium.

Ma'adinan skarn na Copper, a faɗin magana, ana samun su ta hanyar sinadarai da canjin ma'adinai na zahiri wanda ke faruwa lokacin da lithologies daban-daban guda biyu suka haɗu.

2

Menene matsakaicin darajar ajiyar tagulla?

Daraja muhimmin abu ne a cikin ƙimar ma'adinan ma'adinai kuma shine ma'auni mai tasiri na ƙaddamar da ƙarfe.Yawancin ma'adinan tagulla sun ƙunshi ɗan ƙaramin yanki na ƙarfen tagulla da ke ɗaure cikin ma'adanai masu mahimmanci.Sauran ma'adinan dutsen da ba a so kawai.

Kamfanonin bincike suna gudanar da shirye-shiryen hakowa don fitar da samfuran dutse da ake kira cores.Sannan ana nazarin ainihin abin da kemikal don tantance “makin” ajiya.

Makin ajiya na Copper yawanci ana bayyana shi azaman nauyin kashi na jimlar dutsen.Misali, kilogiram 1000 na taman tagulla yana dauke da kilogiram 300 na karfen tagulla tare da maki 30%.Lokacin da maida hankali na karfe ya yi ƙasa da ƙasa, ana iya kwatanta shi cikin sassan da miliyan.Duk da haka, ƙididdigewa shine yarjejeniyar gama gari don jan ƙarfe, kuma kamfanonin bincike suna ƙididdige ƙima ta hanyar hakowa da tantancewa.

Matsakaicin ma'aunin jan ƙarfe na tama a ƙarni na 21 bai kai kashi 0.6% ba, kuma adadin ma'adinan tama a cikin jimlar taman ta ƙasa da kashi 2%.

Ya kamata masu saka hannun jari su duba ƙididdiga masu ƙima da ido mai mahimmanci.Lokacin da kamfanin bincike ya fitar da sanarwa mai daraja, masu zuba jari su tabbata sun kwatanta shi da jimillar zurfin jigon rawar da aka yi amfani da su don tantance maki.Ƙimar babban matsayi a ƙananan zurfin yana da ƙasa da ƙasa fiye da ƙimar matsakaicin matsayi daidai ta hanyar mahimmanci mai zurfi.

3

Nawa ne kudin ma'adanin tagulla?

Ma'adinan tagulla mafi girma kuma mafi riba shine ma'adinan budadden ramin, kodayake ma'adinan tagulla a karkashin kasa ba sabon abu bane.Abu mafi mahimmanci a cikin buɗaɗɗen ramin mine shine albarkatun kusa da saman.

Kamfanonin hakar ma'adinai na musamman suna sha'awar yawan nauyi, wanda shine adadin dutse da ƙasa mara amfani sama da albarkatun tagulla.Dole ne a cire wannan kayan don samun damar albarkatun.Escondida, da aka ambata a sama, yana da albarkatun da ke tattare da babban nauyi, amma ajiyar kuɗi har yanzu yana da darajar tattalin arziki saboda yawan albarkatun ƙasa.

4

Menene nau'ikan ma'adinan tagulla?

Akwai nau'ikan ma'aunin tagulla iri biyu: sulfide ores da oxide ores.A halin yanzu, tushen mafi yawan tushen jan ƙarfe shine sulfide ma'adinan chalcopyrite, wanda ke ɗaukar kusan kashi 50% na samar da tagulla.Ana sarrafa ma'adinan sulfide ta hanyar yawo don samun jan ƙarfe.Copper ores dauke da chalcopyrite iya samar da maida hankali dauke da 20% zuwa 30% jan karfe.

Mafi mahimmancin abubuwan da ke da mahimmanci na chalcocite yawanci suna da matsayi mafi girma, kuma tun da chalcocite bai ƙunshi baƙin ƙarfe ba, abun ciki na jan karfe a cikin ma'auni yana daga 37% zuwa 40%.An haƙa Chalcocite shekaru aru-aru kuma yana ɗaya daga cikin ma'adinan tagulla mafi riba.Dalilin haka shi ne yawan abin da ke cikin tagulla, kuma jan ƙarfen da ke cikinsa yana da sauƙin rabuwa da sulfur.

Duk da haka, ba shine babban ma'adinan tagulla a yau ba.Copper oxide ore an leaked da sulfuric acid, saki da jan karfe a cikin wani sulfuric acid bayani dauke da jan karfe sulfate bayani.Sannan ana cire jan karfen daga maganin sulfate na jan karfe (wanda ake kira da arziƙin leach solution) ta hanyar fitar da sauran ƙarfi da tsarin jijiya na lantarki, wanda ya fi tattali fiye da flotation.