
Ebe a na-egwupụta ọla edo na Senegal bụ obere ọkwa ọla edo oxidized nwere akara ọla edo nke 2.49 g/t. A na-eme nyocha ụlọ nyocha site na iji usoro ikpo mmiri. Mmetụta nke usoro parameters dị ka ore urughuru size, ụdị na dosages nke leaching mmadụ, leaching oge, na ụdị na dosages nke inyeaka oxidants na gold mmịpụta e nyochara. Achọpụtara ọnọdụ kachasị mma, na-enweta ọnụego ntanye ọla edo nke 89.57% yana akara ọla edo na ihe fọdụrụ na leaching nke 0.26%. Nsonaazụ ndị a na-enye ntọala teknụzụ a pụrụ ịdabere na ya maka mmepe ezi uche na itinye n'ọrụ nke ọla a.
1. Njirimara ore
Ọla edo nke raw ore bụ 2.49 g/t, nke bụ isi ihe nwere ike nwetaghachi. Ọla ọla ọcha bụ 4.26 g/t, yana ọdịnaya dị obere. Isi ihe na-adịghị ọcha na ọla bụ SiO₂, nke na-esote obere Al na Fe. Akụkụ bụ isi na-emerụ ahụ bụ arsenic, yana ọkwa arsenic nke 0.68%. Akara ule nke ihe ndị ọzọ dị ntakịrị. Isi mineral ndị dị na ọla bụ limonite, na mineral sulfide dị ụkọ nke ukwuu, ọkachasị pyrite. Ihe ndị dị na gangue bụ isi quartz, feldspar, na mineral ụrọ.
Ebe a na-egwupụta ọla edo bụ ọla oxidized na-ekpo ọkụ nke ukwuu nke nwere usoro rụrụ arụ, ọkachasị n'ụdị irighiri ihe na ala gbajiri agbaji. Nchọpụta Petrographic na-egosi na ọtụtụ n'ime pyrite dị na ọla dị n'ụdị euhedral grains, agbakwunyere na quartz, feldspar, na chlorite. The urughuru size bụ dịtụ mma, n'ozuzu sitere na 0.02 ka 0.4 mm. Limonite na-egosi dị ka pseudomorph nke pyrite ma ọ bụ colloidal limonite nke kpụrụ site na condensation nke ferric hydroxide ngwọta agwakọta na obere ego nke silicate ụrọ mineral, na-ejuputa cracks nke gangue mineral. Quartz na-adịkarị dị ka metacolloidal chalcedony quartz, yana ọtụtụ nha nha sitere na 0.02 ruo 0.15 mm. Feldspar dị n'ụdị ọka na-adịghị agafe agafe ma ọ bụ mkpokọta, nwere nha nha nke 0.02 ruo 0.3 mm. Ihe ndị dị na ọla edo dị na ọla a nwere oke nha anya dị mma, nke sitere na ọla edo mara mma nke -0.001 mm.
2. Usoro ule
A na-awụsa ntụ ntụ ahụ e gwepịara n'otu akụkụ ahụ n'ime otu gbọmgbọm cylindrical jupụtara na akwa akwa. A na-edozi oke mmiri siri ike na 1.5: 1. A na-agbakwunye lime iji dozie uru pH ka ọ dị elu karịa 11. na ụfọdụ ego sodium cyanide agbakwunyere. A na-eme leaching na ụlọ okpomọkụ ruo oge ụfọdụ. Mgbe ule ahụ gasịrị, a wụsara pulp ahụ maka ikewa mmiri siri ike. A tụlere ihe ndị dị n'ọlaedo dị n'ime ihe fọdụrụ n'ime mmiri na-etinye ọla edo dị na ngwọta nwere ọla edo, wee gbakọọ ọnụ ahịa leaching ọla edo.
3. Nsonaazụ ule na nyocha
Dabere na njirimara nke akụrụngwa akụrụngwa, e mere ntụnyere n'etiti atụmatụ nnwale abụọ: apịtị dum cyanidation leaching na obo leaching. Ọnọdụ ule maka cyanidation dum-apịtị dị ka ndị a: ịdị mma nke -0.074 mm 95%, oke mmiri siri ike nke 3: 1. igwe mkpali, na leaching oge nke 24h. Ọnọdụ ule maka ikpo mkpokoro bụ ndị a: nha uru nke ore -10 mm, oke mmiri siri ike nke 1.5: 1. na oge nkwụsị nke 72h.
N'iji usoro ikpokọta mkpokoro ahụ, ọnụego ntanye ọla edo bụ 70.89%. N'iji usoro cyanidation apịtị dum, ọ̀tụ̀tụ̀ ntanye ọla edo gbadara ntakịrị ruo 74.05%. N'ịtụle ọnụ ahịa mmepụta ihe n'ụzọ zuru ezu, a nakweere usoro ikpo ọkụ n'ule iji nwetaghachi ọla edo.
4. Mkpebi
(1) Ore ọla edo bụ ọla oxidized nke emere site na ihu igwe, nwere akara ọla edo nke 2.49 g/t, ọkachasị ọla edo mara mma nke -0.001 mm. Ore dị mma maka ọgwụgwọ site na usoro leaching cyanidation.
(2) Site n'ule ule ọnọdụ leaching, a na-ekpebi usoro usoro ịhịa aka kacha mma dị ka ndị a: nha nke ore -20 mm, sodium cyanide usoro onunu ogwu nke 2.0 n'arọ / t, calcium peroxide onunu ogwu nke 4.0 kg / t, na leaching oge nke 10 ụbọchị. Ndekọ nkewa nke enwetara bụ ọnụego leaching ọla edo nke 89.57% yana akara ọla edo na ihe fọdụrụ na leaching nke 0.26%.
N'ikpeazụ, onye ahịa ghọtara nsonaazụ ule anyị. Mgbe ya na onye ahịa na-ekwurịta okwu, ezipụ ihe nlele, ma mee usoro nyocha nke uru. Site na nlebanya atụnyere, usoro usoro nke dabara adaba maka ọnọdụ ahụ ka emechara ahaziri maka ọrụ mkpokoro a.
Ugbu a, ọrụ a na-aga n'ihu nke ukwuu. N'ime ọnwa ole na ole, a ga-arụcha ihe ọkụkụ.
Ọrụ ikpoko ọla edo oxidized na Senegal ekerewo òkè dị mma n'ịkwalite mmepe ogbunigwe ọla edo na Senegal. Usoro dum nke ọrụ a, site na nyocha nyocha nke uru, ime ụlọ, ọbịbịa akụrụngwa, ntinye na ntinye ọrụ, ọzụzụ ndị ọrụ, ruo n'ịrụ ọrụ nke ikpo ọkụ, bụ ọrụ nke United Chemical Ụlọ ọrụ mmepụta ihe ma rute ụkpụrụ mmepụta.
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