Russian Gold Mine Leaching and Processing Cases

Mayskoye Gold Mine

Umgodi wegolide waseMayskoye, omi kwingingqi yaseChukotka eRashiya, yindawo ebalulekileyo enegolide eneempawu ezintsonkothileyo zejoloji. Umzimba wentsimbi ngummandla ontsonkothileyo oneminerali ye-breccia. Iqulethwe ngemithambo yequartz edityaniswe ngaphakathi kwamatye aguquliweyo argillaceous. Le mithanjana ye-quartz yiyona mikhosi iphambili yegolide, kwaye ukubunjwa kwayo kuhambelana ngokusondeleyo kwimisebenzi enzima ye-tectonic kunye ne-hydrothermal kummandla.

Zimbini iintlobo zentsimbi ekrwada eziphambili: i intsimbi yokuqala, ebaluleke kakhulu zichasayo. Olu hlobo lwe-refractory lubangelwa ikakhulu kukusasazwa okucolekileyo kwegolide ngaphakathi kweeminerali zesulfide, ezinjenge-pyrite kunye ne-arsenopyrite. Ezi zimbiwa zigquma amasuntswana egolide, nto leyo eyenza kube nzima kakhulu ukukhupha igolide kusetyenziswa iindlela eziqhelekileyo. I ore oxidized, kwelinye icala, ubukhulu becala yenziwe nge-quartz mica. Kunye nequartz mica, kukho izixa ezincinci zefeldspar, kaolin, kunye neesulfides. Inkqubo ye-oxidation iye yatshintsha i-mineralogy ye-ore, nto leyo echaphazela inkqubo yokukhutshwa kwegolide.

Ukulungiswa kwentsimbi ekrwada ene-oxidized, ibhekiswa kwisityalo se-CIL (Carbon - in - Leach). Xa iisampulu ezikrwada ezikrwada zazisetyenzwa ekuqaleni kwiplanti ye-CIL, izinga lokufunyanwa kwegolide laliphantsi ngokudanisayo. Oku kubalelwa ikakhulu kwisiphumo "sokugcadwa kwangaphambili" kwezinto eziphilayo ezikhoyo kwintsimbi ekrwada. I-organic matter inobudlelwane obuqinileyo begolide ye-cyanide complexes, ngokufanelekileyo "ukuba" igolide kwisisombululo se-leaching. Ukuchasa lo mba, kwaphunyezwa inkqubo enamanyathelo amabini. Ekuqaleni, Ukudibanisa lwekhabhoni - izinto eziqulathe zaqhutywa. Kule nkqubo ye-flotation, abaqokeleli kunye ne-frothers bakhethwe ngononophelo kwaye bahlengahlengiswa ukuze bahlule ngokukhethiweyo izinto ezithwala i-carbon ukusuka kuyo yonke intsimbi ekrwada. Emva kokuba i-flotation, iintsila ezidadayo zaye zathotyelwa ukutyhutyha. Le ndlela yanciphisa into ethi "preg - roasting" ngamaxesha amathathu. Ngenxa yoko, izinga lokubuyiselwa kwegolide liye laphucuka kakhulu, lafikelela kumanqanaba ayenze ukuba inkqubo yokukhutshwa isebenze kakuhle kwezoqoqosho.

Ngokumalunga nentsimbi ekrwada yokuqala, malunga ne-90% yegolide ifunyanwa ngokujikeleza. Inkqubo yeflotation ibandakanya ukusetyenziswa kweerejenti ezahlukeneyo, kubandakanywa abaqokeleli, ii-frothers, kunye nezilungisi. Ezi zixhobo zilungiswa ngononophelo ukuba zijolise kwiiminerali zesulfide ezibamba igolide. I-sulfide concentrate efunyenweyo, etyebileyo kwigolide kunye neeminerali zesulfide, emva koko ithuthwa kumgama omde ukuya kwisityalo esikummandla wase-Amur. Kwesi sityalo, i-concentrate ingena kwi-oxidation, elinyathelo elibalulekileyo lokuqhekeza iiminerali zesulfide kunye nokukhulula igolide egqunyiweyo. Emva kwe-oxidation, ukuvuza itanki yecyanide iyenziwa. Isisombululo secyanide siphendulana negolide, senza igolide enyibilikayo - iicomplexes zecyanide ezinokuphinda zisetyenzwe ukuze kubuyiselwe igolide.

UkuLeaching kweNkunkuma yaseMgodini weGolide

Kumashishini egolide aseRashiya-emigodini, iimfumba zenkunkuma zingumthombo oxabisekileyo wokubuyisela igolide yesibini. Ezi mfumba zenkunkuma ziimveliso zemisebenzi yangaphambili yokwembiwa nokusetyenzwa kwayo. Ziqulethe isixa esikhulu segolide, engazange ifunyanwe ngokupheleleyo ngexesha leenkqubo zokuqala zokutsalwa. Igolide kwimfumba yenkunkuma ihlala ikhona ngeendlela ezahlukeneyo, kubandakanywa amasuntswana egolide acolekileyo, igolide-ethwele izimbiwa, kunye negolide edityaniswe kumphezulu wezinye izimbiwa.

Uphando lubonisa ukuba izinga lokuvuza kwegolide kwezi zimfumba zenkunkuma i-cyanidation ye-percolation inokufikelela kuma-75% - 82%. I-Percolation cyanidation yinkqubo apho isisombululo se-cyanide edibeneyo sitshizwa okanye sithotywe kwimfumba yenkunkuma. Isisombululo se-cyanide sityhutyha kwimfumba yenkunkuma, sisabela ngegolide kwaye senze igolide enyibilikayo - i-cyanide complexes. Ezi zakhiwo ziye ziqokelelwe emazantsi emfumba yenkunkuma ukuze ziqhubeke nokusebenza.

Nangona kunjalo, ngenxa yokucoleka okuphantsi kwesakhiwo sezimbiwa kwimfumba yenkunkuma, kukho imingeni emininzi. I-low-fineness minerals ibangela ukucotha kwesisombululo esisebenzayo. Oku kuthetha ukuba isisombululo se-cyanide sithatha ixesha elide ukungena kwimfumba yenkunkuma, ukunciphisa ukusebenza kakuhle kwenkqubo yokucoca. Ukongeza, ukunqanda umonakalo ongatshintshiyo wemfumba yenkunkuma yinkxalabo enkulu. Ubunzima bemfumba yenkunkuma kunye neentshukumo zemichiza ngexesha lokuvuza kunokubangela ukuba imfumba yenkunkuma idilike okanye ingazinzi. Ukujongana nale miba, olunye uphononongo lucebisa ukugranula iimfumba zenkunkuma. Enye indlela kushushu - ukomisa umoya kwangaphambili, apho imfumba yenkunkuma yomiswa kusetyenziswa umoya oshushu ukuphucula ukungeneka kwayo. Enye indlela kukuxuba imfumba yenkunkuma nentsimbi ekrwada ngokomlinganiselo othile. Lo mxube unokuphucula ubume bemfumba yenkunkuma, okwenza kube lula ukutyhutyha isisombululo se-leaching kunye nokuphucula ukuzinza kwemfumba yenkunkuma.

Shaanxi United Chemical: Iqabane lakho elilungileyo

Le nkampani inikeza sodium cyanide ngazo zombini ixabiso eliphantsi kunye nomgangatho ophezulu. I-sodium cyanide yi-reagent ephambili kwinkqubo yokukhupha igolide. Iindleko - i-sodium cyanide esebenzayo ebonelelwa nguShaanxi United Chemical inceda umgodi ukucutha iindleko zemveliso ngelixa uqinisekisa iziphumo zomgangatho ophezulu wokuvuza. Ngapha koko, inkampani ayipheleli nje ekuboneleleni ngemveliso. Ibonelela ngenkxaso yobugcisa ebanzi kumgodi. Oku kubandakanya iingcebiso zobuchwephesha malunga nedosi efanelekileyo ye-sodium cyanide ngokweempawu ezahlukeneyo ze-ore, isikhokelo malunga nokugcinwa okukhuselekileyo kunye nokuphathwa kwe-sodium cyanide, kunye noncedo ekusekeni iinkqubo ezisebenzayo zokukhupha.