Nzira uye Maitiro ekubvisa Cyanide kubva paSurface yeSulfide Ores

Cyanidation leaching inzira inoshandiswa zvakanyanya muindasitiri yemugodhi wegoridhe. Zvisinei, cyanidation leaching tailings kazhinji zvinounza matambudziko makuru. Aya matailings anowanzo ane low-concentration cyanides, goridhe nesirivha isina kutorwa, pamwe chete nemaminerari anotakura akadai sechalcopyrite uye pyrite. Nzvimbo dze sulfide ores mumiswe iyi inodziviswa ne Sodium cyanide panguva yecyanidation process. Kunyangwe iyo ore giredhi yakaderera uye iyo cyanide kusungirirwa hakuna kunyanya kukwira, huwandu hukuru hwematailings hunovaita kunetseka kukuru.

Parizvino, pane nzira nhatu dzakajairika dzekurapa dzecyanidation leaching tailings: acid activation, oxidant activation, uye mhangura - munyu kurapwa.

Acid Activation Method

Iyo asidhi activation nzira inosanganisira kuwedzera sulfuric acid kana oxalic acid kuti ishandise miswe. Nepo iyi nzira inogona kunyatso misa miswe, ine zvipingamupinyi zvakati wandei. Chekutanga, inokonzeresa kugadzira muchetura uye unokuvadza hydrogen cyanide gasi. Kunyangwe iyo yakadzoserwa hydrogen cyanide gasi inogona kushandiswazve, kuvhiya kunoisa njodzi huru. Chechipiri, iyo acidic nharaunda inogona kukanganisa midziyo nemapaipi zviri nyore, zvinoda yakakwirira-nhanho anti-corrosion matanho.

Oxidant Activation Method

Mune iyo oxidant activation nzira, hydrogen peroxide kana hypochlorite inowedzerwa kuti ishandise miswe. Nekudaro, zvakaoma kunyatso kudzora kuyerwa kweiyo oxidant. Zvishoma zvakawandisa huwandu hunogona oxidize sulfide ores, kuderedza kupora kwavo. Uyezve, maoxidants mazhinji anoodza muviri wemunhu, zvichiunza njodzi kuhutano hwevashandi.

Mhangura - Munyu Kurapa Nzira

Iyo mhangura - munyu nzira yekurapa inoshandisa inorganic munyu senge copper sulfate kana iron munyu kumisa miswe. Zvakadaro, mitemo yezvakatipoteredza ine zvinodikanwa zvakasimba zvekubuda kwecopper ions mumvura ine tsvina. Uyezve, ion yemhangura ndeye activator ye sphalerite uye pyrite. Nokudaro, iyi nzira haina kukodzera kune cyanidation tailings ine zvose sphalerite uye pyrite, uye haina kushamwaridzana nemamiriro ezvinhu.

Mukupedzisa, kurapwa kwecyanidation leaching tailings kunopa matambudziko akaomarara. Kunyangwe ine yakaderera cyanide yemukati, iyo yakakwira mari yekudyara uye kuchengetedzeka kwakasimba uye zvinodiwa zvezvakatipoteredza zvinoita kuti zvive zvakakosha kuongorora nzira nyowani, dzinoshanda, uye dzakasimba dzekurapa. Izvi zvinogona kusanganisira musanganiswa wehunyanzvi huripo kana kuvandudzwa kwemaitiro matsva ekugadzirisa zvinonetsa kwezvakatipoteredza nezvehupfumi zvine chekuita nemisara iyi.