Basa reSodium Cyanide uye Inodzivirira Alkali muCyanidation Leaching process

ziviso

Cyanidation leaching inzira inoshandiswa zvakanyanya muindasitiri yezvicherwa yekuchera goridhe nesirivha kubva mumatombo. Mukuita uku, Sodium cyanide uye Chengetedza alkali kuita mabasa anokosha. Kunzwisisa mabasa avo kwakakosha pakugadzirisa maitiro ecyanidation, kuvandudza simbi yekudzoreredza mitengo, uye kuderedza mari yekushandisa.

Basa reSodium Cyanide

Kunyungudutsa Ndarama neSirivha

Sodium cyanide (NaCN) inoshanda seyekutanga leaching mumiriri mukuita cyanidation. Basa rayo guru nderekunyungudutsa goridhe nesirivheri mukati meore, zvichikonzera kuumbwa kwesimbi inonyungudika cyanide complexes. Muhupo hweokisijeni nemvura, Sodium Cyanide inopindirana negoridhe nesirivha. Kuita uku kunoshandura simbi kuita makomboni anogona kunyungudika zviri nyore mumushonga une aqueous, unova wakakosha kune Cyanidation leaching process.

Kukanganisa Mwero weLeaching

The they sodium cyanide mune leaching solution inokanganisa zvakanyanya kuwanda kwegoridhe nesirivha. Kazhinji, mukati mehumwe huwandu, kuwedzera kweiyo sodium cyanide concentration inomhanyisa chiyero cheleaching. Yakawanda cyanide ions inoreva mamwe mareactants anowanikwa kune dissolution reaction, zvichikurudzira kuumbwa kwesimbi cyanide complexes. Nekudaro, yakawandisa yakakwira sodium cyanide yekumisikidza inotungamira kukuwedzera mitengo uye njodzi dzinogona kuitika kwezvakatipoteredza. Uyezve, yakawandisa cyanide inogona kuita pamwe nezvimwe zvikamu muore, senge mamwe simbi sulfides. Aya maitiro anopedza cyanide, kuderedza kushanda kwayo pakunyungudutsa goridhe nesirivha.

Kuita Nezvimwe Zvikamu muOre

Ore ine kusvibiswa kwakasiyana uye zvikamu kunze kwegoridhe nesirivheri, uye sodium cyanide inogona kudyidzana nezvinhu izvi, zvichikanganisa maitiro ecyanidation. Semuenzaniso, zvicherwa zvemhangura mu ore zvinosangana ne sodium cyanide kuumba mhangura cyanide complexes, ichidya cyanide mukuita. Maitiro nemaminerari emhangura akasiyana anosiyana muyero uye zvigadzirwa. Mamwe maminerari emhangura sulfide, sechalcopyrite, anopindirana necyanide pamberi peokisijeni, ichigadzira mhangura cyanide uye sarufa - ine - zvigadzirwa. Izvi hazvingodzikisi huwandu hwecyanide inowanikwa yekunyungudutsa goridhe nesirivheri asi inogonawo kugadzira zvinhu zvinokanganisa maitiro anotevera ekudzoreredza simbi.

Basa reKudzivirira Alkali

Kuchengetedza Kugadzikana kweCyanide Solution

Rimwe remabasa akakosha ekudzivirira alkali kuchengetedza kugadzikana kweiyo cyanide mhinduro. Cyanide ions mumhinduro inowanzoita hydrolysis, kunyanya munzvimbo dzine acidic. Munguva yehydrolysis, cyanide ions inogona kugadzira hydrogen cyanide, gasi rine muchetura uye rinoputika. Izvi hazvikonzeri kurasikirwa kwecyanide chete asi zvakare zvinokonzeresa kutyisidzira kwakanyanya kune zvakatipoteredza uye hutano hwevanhu. Protective alkalis, yakadai se calcium hydroxide (lime), sodium hydroxide, kana potassium hydroxide, inowedzera pH kukosha kwemhinduro. Nekusimudza pH, ivo vanochinja makemikari equilibrium nenzira inoderedza hydrolysis ye cyanide, kuve nechokwadi chekushanda kweiyo cyanidation maitiro uye kuderedza kushandiswa kwecyanide nekuda kwehydrolysis.

Kuderedza Kukanganisa Kwezvicherwa Zvinokuvadza

Ore inogona kunge iine zvicherwa zvinokanganisa maitiro ecyanidation, senge pyrrhotite. Aya mamineral anopindirana necyanide uye oxygen, achipedza izvi zvakakosha zvinhu uye achikanganisa kunyungudika kwegoridhe nesirivha. Kana alkali inodzivirira ichiwedzerwa panguva yekukuya ore, inogona oxidize maminerari aya anokuvadza kana kuita kuti agadzire madhiri, achiabvisa. Semuenzaniso, kana paine lime, pyrrhotite inogona kuve oxidized, zvichikonzera kuumbwa kwesimbi hydroxide precipitates uye sulfur - ine makomisheni. Iyi nzira inodzikamisa kukanganisa kwemaminerari anokuvadza pane cyanidation, achisimudzira kushanda zvakanaka kwegoridhe nesirivha.

Kugadzirisa iyo pH Kukosha kwePulp

Iyo pH kukosha kweiyo pulp panguva yecyanidation process ndiyo yakakosha parameter, uye inodzivirira alkali inoshandiswa kuigadzirisa kuti ive yakakwana. Kune akawanda cyanidation maitiro, pH iri pakati pe9 ne12 inowanzova yakanaka. Mukati memhando iyi, mhinduro yecyanide inoramba yakagadzikana, uye kupera kwegoridhe nesirivha kunofamba zvakanaka. Kana iyo pH yakadzikira, cyanide hydrolysis inova yakakosha, ichidzikisa chiyero chegoridhe nesirivheri. Sezvineiwo, iyo pH yakakwira zvakanyanya inogona kukanganisa zvimiro zveore zvimedu uye maitiro kinetics egoridhe nesirivheri kupera. Mhando dzakasiyana dzekudzivirira alkalis dzinogona kusarudzwa zvichienderana neakananga maitiro eiyo ore. Lime inowanzoshandiswa nekuda kwemutengo wayo wakaderera uye kuita kwakanaka mune dzakawanda zviitiko. Paunenge uchishandisa lime sechidziviriro alkali, inowanzowedzerwa muchimiro chemukaka weraimu kuitira kudzora zviri nani kuwanda kwekuwedzera uye maitiro ekuita.

Kudyidzana pakati peSodium Cyanide uye Inodzivirira Alkali

Mabasa e sodium cyanide uye alkali inodzivirira yakanyatsopindirana muiyo cyanidation leaching process. Inodzivirira alkali inovimbisa kugadzikana kweiyo sodium cyanide mhinduro, zvichiita kuti inyatso kunyungudutsa goridhe nesirivha. Panguva imwecheteyo, kuvapo kwe sodium cyanide mumushonga kunokonzera kushanda kwekudzivirira alkali. Zvigadzirwa zvesodium cyanide zvine zvimwe zvinoumba ore zvinogona kushandura pH yemhinduro, uye alkali inodzivirira inofanira kuramba ichigadzirisa pH kuchengetedza yakakwana cyanidation mamiriro. Chiyero chakakodzera che sodium cyanide uye inodzivirira alkali yakakosha. Yakawandisa inodzivirira alkali inogona kutungamira kune yakawandisa alkalinity, ichikanganisa maitiro ecyanidation. Kusakwana kwekudzivirira alkali, kune rumwe rutivi, inotadza kuvimbisa kugadzikana kweiyo cyanide mhinduro, zvichikonzera kuwedzera kushandiswa kwecyanide uye kuderera kwekuita basa. Naizvozvo, mune chaiyo cyanidation process mashandiro, zvinodikanwa kunyatso kudzora madosi e sodium cyanide uye inodzivirira alkali zvinoenderana neiyo ore maitiro uye maitiro ekuita kuti uwane yakanakisa leaching mhedzisiro.

mhedziso

Mune cyanidation leaching process, sodium cyanide uye inodzivirira alkali zvese zvakakosha zvikamu. Sodium cyanide ine basa rekunyungudutsa goridhe nesirivheri, nepo alkali inodzivirira ichiita basa rakakosha kuchengetedza kugadzikana kwemushonga wecyanide, kuderedza kukanganiswa kwemaminerari anokuvadza, uye kugadzirisa kukosha kwepH yepulp. Iko kushandiswa kwakaringana uye kuenzana kwezvinhu zviviri izvi kwakakosha pakugadzirisa cyanidation process, kuvandudza mwero wekudzoreredza wegoridhe nesirivheri, uye kuderedza mutengo wekugadzira. Vashandi vemigodhi vanofanirwa kunyatso ongorora maitiro eiyo ore uye kuita bvunzo dzakakodzera kuti vaone iwo akakwana madosi uye anoshanda mamiriro e sodium cyanide uye inodzivirira alkali kuti ive nechokwadi chekushanda uye kwakasimba kushanda kwecyanidation leaching process.