Cyanide Sodium Heap Leaching Project yeOxidized Gold Ore muSenegal

Mugodhi wegoridhe muSenegal idombo regoridhe rakacheneswa neokisijeni regiredhi repasi rine giredhi regoridhe re2.49 g/t. Ongororo yemurabhoritari yakaitwa uchishandisa nzira yekubvisa simbi . Mhedzisiro yematanho ekushanda akadai sehukuru hwezvimedu zveore, mhando uye zviyero zvezvinoshandiswa pakuburitsa simbi, nguva yekuburitsa simbi, uye mhando uye zviyero zvezvinobatsira zveokisijeni pakubvisa goridhe zvakaongororwa. Mamiriro akakodzera akawanikwa, zvichiwana chiyero chekubvisa goridhe che89.57% uye giredhi regoridhe muzvimedu zvekubvisa simbi zve0.26%. Mhedzisiro iyi inopa hwaro hwakavimbika hwehunyanzvi hwekuvandudza nekushandisa simbi iyi zvine musoro.

1. Ore Properties

Giredhi regoridhe resimbi yakasvibira i2.49 g/t, inova chinhu chikuru chinodzoserwa. Sirivha giredhi i4.26 g/t, ine yakaderera. Chinhu chikuru chetsvina mune ore iSiO₂, inoteverwa nediki shoma yeAl neFe. Chinhu chikuru chinokuvadza iarsenic, ine arsenic giredhi ye0.68%. Magiredhi ezvimwe zvinhu akadzikira. Iwo makuru esimbi zvicherwa mu ore arimonite, uye zvicherwa zve sulfide zvanyanya kushomeka, kunyanya pyrite. Iyo gangue minerals inonyanya kuve quartz, feldspar, uye ivhu zvicherwa.

Mugodhi uyu wegoridhe isimbi ine oxidized yakaomeswa zvine mutsindo ine chimiro chakasununguka, kazhinji iri muchimiro chezvidimbu zvakaputsika nevhu. Petrographic identification inoratidza kuti yakawanda yepyrite mune ore iripo muchimiro cheeuhedral tsanga, dzakaiswa muquartz, feldspar, uye chlorite. Iyo particle size yakanaka, kazhinji kubva pa0.02 kusvika 0.4 mm. Limonite inoratidzika se pseudomorph ye pyrite kana colloidal limonite yakaumbwa ne condensation ye ferric hydroxide solution yakasanganiswa nediki shoma ye silicate yevhu maminerari, achizadza kuputika kwemaminerari e gangue. Quartz inonyanya kuvepo se metacolloidal chalcedony quartz, ine akawanda particle saizi kubva pa0.02 kusvika 0.15 mm. Feldspar iri muchimiro chezviyo zvisina kujairika kana maaggregates, ine chidimbu saizi ye0.02 kusvika 0.3 mm. Zvicherwa zvegoridhe zviri muore iyi zvine saizi yakati chechetere, yegoridhe rakatsetseka re -0.001 mm.

2. Nzira dzekuedza

Matombo asina kuchekwa kusvika pahukuru hwakati hwechimedu akadururwa mubharero rakaita sedenderedzwa rakazadzwa nedombo. Chiyero chemvura-yakasimba chakagadzikwa pa1.5:1. Lime yakawedzerwa kugadzirisa pH kuti ive yakakura kupfuura 11. uye huwandu hwakati hweSodium cyanide hwakawedzerwa. Kubviswa kwemvura kwakaitwa patembiricha yemukamuri kwenguva yakati. Mushure mekuyedzwa, pulp yakadururwa kuti iparadzaniswe nemvura yakasimba. Huremu hwegoridhe mutsvina inobviswa uye huwandu hwegoridhe mumhinduro ine goridhe zvakaongororwa, uye mwero wekubviswa kwegoridhe wakaverengerwa.

3. Test Results uye Analysis

Zvichibva pahunhu hwezvinhu zvesimbi dzisina kugadzirwa, kuenzanisa kwakaitwa pakati pezvirongwa zviviri zvekuyedza: kukwesha kwesimbi mud-yakazara uye kukwesha kwesimbi muheap. Mamiriro ekuyedza ekugadzira tsvina mud-yakazara aive seizvi: kukwesha kwesimbi mud-yakazara kwe -0.074 mm 95%, chiyero chemvura-yakasimba che 3:1. kusanganisa nemagetsi, uye nguva yekukwesha kwemaawa makumi maviri nemana. Mamiriro ekuyedza ekugadzira tsvina muheap aive seizvi: saizi yesimbi mud-yakazara ye -10 mm, chiyero chemvura-yakasimba che 1.5:1. uye nguva yekukwesha kwemaawa makumi manomwe nemaviri.

Tichishandisa murwi wekucheka, mwero wegoridhe wekutengesa waive 70.89%. Uchishandisa iyo-yakazara-madhaka cyanidation maitiro, iyo goridhe leaching rate yakawedzera zvishoma kusvika 74.05%. Tichifunga nezve mutengo wekugadzira wakazara, iyo mirwi leaching process yakagamuchirwa muyedzo yekudzosera goridhe.

4. Mhedziso

(1) Ore yegoridhe ioxidized ore inogadzirwa nemamiriro ekunze, ine giredhi regoridhe re2.49 g/t, kunyanya goridhe rakatsetseka re -0.001 mm. Iyo ore yakakodzera kurapwa neiyo cyanidation leaching process.

(2) Kuburikidza nemiedzo yekubuda kwemurwi wematombo, maparamita ekushanda kwemurwi wematombo akakodzera akaonekwa seizvi: saizi ye-ore particle ye--20 mm, chiyero cheSodium Cyanide che2.0 kg/t, chiyero checalcium peroxide che4.0 kg/t, uye nguva yekubuda kwemvura kwemazuva gumi. Kupatsanurwa kwezvikamu kwakawanikwa kwaive chiyero chegoridhe che89.57% uye giredhi regoridhe muzvisaririra zvemurwi wematombo che0.26%.

Pakupedzisira, mutengi akaziva mhinduro dzedu dzebvunzo. Mushure mekutaurirana nemutengi, samples dzakatumirwa, uye nhevedzano yebvunzo dzekubatsirikana dzakaitwa. Kuburikidza nekuongorora kwekuenzanisa, kuyerera kwemaitiro akakodzera mamiriro chaiwo akazogadziridzwa kune iyi murwi leaching purojekiti.

Parizvino, chirongwa ichi chiri kufambira mberi nesimba. Mumwedzi mishoma, murwi leaching chirimwa chinopedzwa.

Chirongwa chekusimudzira murwi chegoridhe rakashongedzwa muSenegal chakaita basa rakanaka mukusimudzira kuvandudzwa kwemigodhi yegoridhe muSenegal. Maitiro ese epurojekiti iyi, kubva pakutsvagisa bvunzo yebeneficiation, dhizaini yadhi, kusvika kwemidziyo, kuisirwa uye kutumwa, kudzidziswa kwevashandi, kusvika pakushanda kwemurwi leaching chirimwa, ibasa re United Chemical Indasitiri uye yasvika pakugadzira zviyero.

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