Cyanide Sodium Heap Leaching Project yeOxidized Gold Ore muSenegal

Mugodhi wegoridhe muSenegal wakaderera-giredhi oxidized gold ore ine giredhi regoridhe re2.49 g/t. Tsvagiridzo yeLabhoritari yakaitwa uchishandisa iyo murwi leaching process. Mhedzisiro yemaparamendi ekuita senge ore particle size, mhando uye dosages yeleaching agents, leaching nguva, uye mhando uye dosages yeanobatsira oxidants pakutorwa kwegoridhe zvakaongororwa. Mamiriro akakwana akatemerwa, kuwana goridhe chiyero che89.57% uye giredhi regoridhe mune yakasara ye0.26%. Iyi mhedzisiro inopa yakavimbika tekinoroji hwaro hwekuvandudza uye kushandiswa kweiyi ore.

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

Ore mbishi yakapwanyiwa kusvika kune imwe saizi yakadirwa mucylindrical barrel yakazara nedombo. Iyo yemvura-yakasimba reshiyo yakagadziriswa pa1.5: 1. Lime yakawedzerwa kugadzirisa pH kukosha kuti ive yakakura kudarika 11. uye imwe chiyero che Sodium cyanide yakawedzerwa. Leaching yaiitwa pakamuri tembiricha kwenguva yakati. Mushure mekuedzwa, pulp yakadururirwa kunze kwekuparadzaniswa kwakasimba-mvura. Iyo goridhe yemukati mune yakasara yeleaching uye kuwanda kwegoridhe mumushonga une goridhe zvakaongororwa, uye chiyero chegoridhe chekutengesa chakaverengerwa.

3. Test Results uye Analysis

Zvichienderana nehunhu hweiyo mbishi ore zvivakwa, kuenzanisa kwakaitwa pakati pezvirongwa zviviri zvekuedza: yakazara-dhaka. cyanidation leaching uye murwi wekucheka. Mamiriro ekuedzwa kweiyo-yakazara dope cyanidation aive anotevera: kukuya fineness ye -0.074 mm 95%, liquid-solid reshiyo ye3:1. mechanical kubvongodza, uye leaching nguva ye24 h. Mamiriro ekuedzwa kwemurwi leaching aive akadai: ore particle size ye -10 mm, liquid-solid ratio ye1.5:1. uye nguva yekubuda ye72h.

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 nemurwi wekucheka mamiriro ekuyedzwa, iyo yakakwana murwi leaching process paramita yakatemerwa seizvi: ore particle size ye -20 mm, Sodium Cyanide dosage ye2.0 kg/t, calcium peroxide dosage ye4.0 kg/t, uye leaching time yemazuva gumi. Indekisi dzekuparadzanisa dzakawanikwa yaive yegoridhe ye10% uye giredhi regoridhe mune yakasara ye89.57%.

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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