SOMAIR

SIROMA (Société des Mines de l'Air) kamfani ne na hakar ma'adinai na kasa na Nijar a yankin hakar ma-adinai na yankin arewacinsa.
An kafa shi a shekarar 1968, ya fara hakar uranium a ajiyar Arlit a shekarar 1971, hakar 0.30 - 0.35% ma'adinai har zuwa zurfin mita 60 (200 ). A shekara ta 1981, kamfanin yana samar da 2100 tU / shekara kuma a shekara ta 2006 yana samar da 1565 tU a ajiyar Tamou. Fitarwar ta kai 3065 tU a shekarar 2012. An kimanta albarkatun, a cewar Red Book, a 23,170 tU, tun daga shekara ta 2010, a 42,200 tU na 0.25%U grade da za a iya dawo da shi a al'ada, da kuma 5500 tU na 0.57%U grade daga tarin leaching. SIROMA na ɗaya daga cikin kamfanonin hakar ma'adinai guda biyu a Nijar, ɗayan kuma COMINAK ne a kusa da Akokan.

 Yanayin ƙasa 
Arlit da Akokan sune garuruwan ma'adinai guda biyu na SOMAIR.  Suna kan iyakar kudancin hamadar Sahara, inda ake fitar da uranium, kuma suna kan iyakar yammacin tsaunukan Aïr. Suna da nisan kilota 1,200 (750 mi) zuwa arewa maso gabashin Niamey, babban birnin Nijar.

 Tarihi 
Binciken uranium a Nijar ya kasance a shekarar 1967. An gano shi a Azelik ta Ofishin Bincike na Faransa na Geologiques et Minières (BRGM). Hukumar Kula da Makamashi ta Atomic ta Faransa (CEA) ce ta fara nazarin iyawarsa da ingancinsa. An kuma gano ajiyar uranium a cikin sandstone a wasu wurare a Nijar kamar a Abokurum (1959), Madaouela (1963), Arlette, Ariege, Artois da Tassa / Taza (1965), Imouraren (1966) da Akouta (1967). A shekara ta 1971, SOMAIR ya zama kamfani na farko da ya yi aiki da ma'adinin Arlit. Duk da haka wani kamfani, Société Minière de Tassa N'Taghalgue (SMTT) ya ba da haƙƙin hakar ma'adinai a 1996 ga SOMAIR kafin ya rushe.

 Ayyuka 
SOMAIR, kamar COMINAK, reshe ne na Areva. Masu hannun jari biyu na kamfanin sune Cogema (yanzu Areva NC) da ONAREM (Ofishin Kasa na Ma'adanai na Nijar). Ayyukan ma'adinai sun dace da takardar shaidar ISO 14001.

 Fitarwa 
An fara aiwatar da hakar a ƙarshen 1970s da farkon 1980s, kuma ya haɗa da gina ayyukan sarrafa leach pad na musamman na ma'adanai na uranium da aka cire, ban da bude hakar ma'adinai. Da farko, an cire ajiyar Artois ta hanyar bude ma'adinai har zuwa zurfin mita 60 (200 ) tare da yawan samarwa na 0.30 - 0.35% ma'adanai. Ana amfani da uranium na ƙasa har zuwa zurfin zurfin mita 90 (300 )), amma tare da ƙarancin hakar ma'adinai na 0.20 - 0.25%.

A lokacin 2005-06, an gina sabbin takalma a kan tsofaffin. Sabon leach pad yana iya sarrafa tan miliyan 17 na ma'adinin uranium wanda zai iya samar da tan miliyan 1.4 na fitar da uranium a kowace shekara. Ga sabon leach pad, wanda ake kira heap leach pad، wanda ke da alaƙa da tafkunan sarrafawa, ƙirar da aka karɓa a shafin hakar ma'adinai na SOMAR tana da mita 30 (98 ) a tsawo. An gina shi da yadudduka 5 na mita 6 (20 ) ɗaga kowannensu. n gina leach pad da tafkin a kan wani nau'i na 300 millimeters (12 in) mai kauri, yumbu mai ƙarancin ruwa. Polyethylene mai yawa (HDPE) na 2 millimeters (0.079 in) kauri an shimfiɗa shi a kan laka. Kyakkyawan ƙirar da aka karɓa ya yi la'akari da rage aikin ƙasa da kuma cikawa da kuma tabbatar da gangaren ruwa don ba da damar fitar da nauyi "ta hanyar hanyar hanyar mafita zuwa tafkuna". Jirgin ruwa shine bututu masu fure kuma an shigar da su a cikin "tsarin herringbone", a cikin kowane tantanin halitta. Ana samun tarin ruwa daga kowane tantanin halitta ta hanyar haɗa su zuwa bututun ruwa mai tarawa wanda ke ɗaukar ruwan da aka zubar a cikin tafkunan sarrafawa. An rufe tsarin bututun sosai tare da cika kayan ma'adinai.

A cewar Red Book, damar albarkatun ma'adinai ya kasance 42,200 tU tun daga shekara ta 2010; wannan ya haɗa da farfadowa na al'ada na 42,200 tu na 0.25%U, kuma ta hanyar tarin tarin wasu 5500 tU a 0.07%U. Samar da ma'adanai na SOMAIR ya karu daga 1808 tU a shekara ta 2009, 2726 tU a cikin shekara ta 2011 da 3065 tU a shekarar 2012. Tun daga shekara ta 2010, samarwa daga ma'adinin SOMAIR Lixi ya kasance 1000 tU / shekara. Hakanan an inganta ƙarfin injin don sarrafa 3000 tU / shekara. Wannan aikin yana da yawan samar da shekara-shekara na 1.4 Mt na ƙananan ma'adinai tare da amfanin ƙasa da 0.1%U. Ana sarrafa ma'adinin da aka sarrafa zuwa ma'adanai sannan a kai shi tashar jiragen ruwa na Benin. Daga waɗannan tashoshin jiragen ruwa, ana tura su zuwa Comurhex a Faransa.

 Bayanan da aka yi amfani da su 

Category:Kamfanoni a Nijar
Category:Kamfanoni