Basa reCalcium Oxide muKuchera Goridhe neSodium Cyanide

ziviso

Goridhe cyanidation, inozivikanwawo se cyanide leaching, inzira inoshandiswa nevakawanda kuburitsa goridhe kubva musimbi mbishi. Mukuita uku, Sodium cyanide inoshandiswa kunyungudutsa goridhe mukati medombo, sezvo goridhe pachayo isinganyungudike mucyanide. Nekudaro, kuvepo kwekusvibiswa kwakasiyana-siyana uye mamiriro emakemikari eiyo ore anogona kukanganisa zvakanyanya kushanda uye mutengo weiyo nzira yekubvisa. Apa ndipo Calcium oxide inoita basa rinokosha.

Kugadzirisa iyo pH Kukosha kwePulp

Rimwe remabasa ekutanga e calcium oxide mune goridhe cyanidation ndeye kudzora pH ye ore pulp. Kana calcium oxide yawedzerwa kumvura, inopindura kuti iwedzere kusangana kweiyo hydroxide ion mumhinduro, nekudaro ichisimudza pH kukosha.

Mukuita cyanidation, zvakakosha kuchengetedza yakakwira pH level, kazhinji iri pamusoro pe11. Izvi zvinodaro nekuti. Sodium Cyanide hydrolyzes mune aqueous solution. Iyo dhigirii yeiyi hydrolysis inoenderana neiyo pH kukosha kwemhinduro. Pane yakakwira pH, kuenzana kweiyo hydrolysis reaction inoshanduka kudzikisa kuwanda kwehydrogen cyanide mumhinduro. Sezvo hydrogen cyanide isingachinji uye inogona kupukunyuka kubva muhurongwa, kuchengetedza yakakwira pH kunobatsira kudzivirira kurasikirwa kwecyanide muchimiro chehydrogen cyanide gasi. Izvi zvakakosha sezvo chikamu chakakosha chegoridhe leaching iri cyanide ion, uye chero kurasikirwa kwe cyanide kunozokonzera kuwedzera kudyiwa kwe. sodium cyanide uye kuderedza kushanda zvakanaka kwe Kuchera goridhe.

Inhibiting iyo Hydrolysis yeCyanide

Sezvambotaurwa pamusoro apa, iyo hydrolysis ye sodium cyanide inogona kukonzera kuumbwa kwehydrogen cyanide, iyo isiri yekurasikirwa chete yakakosha cyanide reagent asiwo inokonzeresa nharaunda nekuchengetedza njodzi nekuda kwehuturu hwayo. Calcium oxide inobatsira kumisa iyi hydrolysis reaction. Nekuwedzera pH yemushonga, inoderedza kuwanda kwehydrogen ions inowanika pakuita ne cyanide ions kuumba hydrogen cyanide. Izvi zvinovimbisa kuti chikamu chepamusoro che cyanide chinoramba chiri mumhando ye cyanide ions, iyo inokosha pakuparara kwegoridhe.

Kubvisa Zvakaipa Migumisiro Yemamwe Ioni

Ore kazhinji ine tsvina dzakasiyana siyana semhangura nesimbi ions, izvo zvinogona kukanganisa maitiro egoridhe cyanidation. Semuenzaniso, maion emhangura anogona kuita necyanide kuti agadzire macompounds akaomarara, nokudaro achidya cyanide uye kuderedza kuwanikwa kwayo pakunyungudika kwegoridhe. Iron ions, kunyanya ferric ions, inogonawo kupindirana necyanide, ichigadzira ferricyanide complexes.

Calcium oxide inogona kubatsira kuderedza mhedzisiro iyi. Munzvimbo yealkaline yakagadzirwa necalcium oxide, mamwe eioni aya esimbi anogona kuumba precipitates. Semuenzaniso, ferric ions inogona kuita ne hydroxide ions kuita ferric hydroxide precipitate. Kunaya uku kunoderedza kuwanda kweioni dzesimbi mumushonga, zvichivadzivirira kubva pakudya cyanide uye kukanganisa maitiro egoridhe.

Zvinogona Negative Effects paPamusoro pH

Nepo calcium oxide inobatsira mune zvakawanda zvinhu zvecyanidation process, kana iyo pH yakakosha yakanyanya (kazhinji iri pamusoro pe12), inogona kuve nemhedzisiro yakaipa pakutorwa kwegoridhe. Pamazinga akanyanya epH, calcium oxide inogona kukonzera kuumbwa kwekarusiyamu peroxide pamusoro pezvikamu zvegoridhe. Iyi dhizaini inoshanda sechivharo, ichidzivirira kusangana kwakananga pakati peiyo cyanide ion nepamusoro pegoridhe, zvichitadzisa kunyungudika kwegoridhe. Naizvozvo, zvakakosha kunyatso kudzora huwandu hwe calcium oxide yakawedzerwa kuti ive nechokwadi chekuti pH inochengetwa iri padanho rakakwana rekutorwa kwegoridhe.

mhedziso

Muchidimbu, calcium oxide inotamba akawanda akakosha mabasa mukutora goridhe maitiro uchishandisa sodium cyanide. Iyo inogadzirisa iyo pH ye ore pulp, inhibits iyo hydrolysis ye cyanide, uye inobatsira kubvisa yakashata mhedzisiro yeimwe simbi ions. Nekudaro, kutonga kwakaringana kwepH kwakakosha kuti udzivise mhedzisiro yakaipa pakutorwa kwegoridhe. Kunzwisisa mabasa aya ecalcium oxide kunogona kubatsira kukwenenzvera mashandiro ecyanidation, kuvandudza kushanda kwegoridhe kutorwa, uye kuderedza kushandiswa kwesodium cyanide, iyo isingangobatsiri hupfumi chete asiwo inoshamwaridzana nenharaunda nekudzikisa kuburitswa kwechepfu cyanide makomisheni.