Tšebeliso ea Cyanide ka Tšebeliso ea Khauta ea Cyanidation

Ts'ebetso ea cyanidation ke lejoe la motheo la ho ntša khauta ho tsoa marong a eona. Ho utloisisa tšebeliso ea sodium cyanide nakong ena ho bohlokoa bakeng sa ho ntlafatsa katleho ea ts'ebetso le ho fokotsa tšusumetso ea tikoloho. Sengoloa sena se hlahloba mekhoa e fapaneng e tlatsetsang ts'ebelisong ea Sodium Cyanide ts'ebetsong ea cyanidation ea khauta.

1. Autodecomposition

Sodium cyanide e feta ho bola ha eona ka bo eona nakong ea ts'ebetso ea cyanidation. Sena se fella ka ho thehoa ha carbonic acid, formic acid, le ammonia. Likarabelo tsa ho bola ha eona ka bo eona li ka ba thata 'me li susumetsoa ke lintlha tse kang mocheso, mahloriso le boteng ba li-catalyst tse itseng.

2. Hydrolysis

Hydrolysis ea Sodium cyanide ke tsela e 'ngoe ea bohlokoa ea ho e sebelisa. Karabelo pakeng tsa metsi le sodium cyanide ke e latelang:

( H2O + NaCN HCN + NaOH )

Hydrogen cyanide (HCN), motsoako o feto-fetohang haholo le o chefo, o hlahisoa nakong ena ea hydrolysis. Bongata ba HCN bo hlahisoang bo amana haufi-ufi le alkalinity ea tharollo. Ha boleng ba pH bo bolokoa ho 12 kapa ho feta, tharollo ea cyanide e lula e tsitsitse. Leha ho le joalo, lintho tse ka fokotsang boleng ba pH, joalo ka carbon dioxide e tsoang moeeng, li-acid tse metsing a maiketsetso, li-ion tsa magnesium tse divalent ( Mg2+ ) le li-ion tsa aluminium tse trivalent ( A13+ ), le liminerale tse fapaneng tse ka har'a ore kapa lihlahisoa tsa oxidation tsa liminerale tsa sulfide , li ka potlakisa karabelo ea hydrolysis.

3. Ho thehoa ha Thiocyanate

Sodium cyanide e arabela le diminerale tsa sulfide tse kang tshepe, koporo le arsenic ho etsa di-complex tsa thiocyanate. Dikarabelo tsena di fetola di-ion tsa cyanide hore e be mefuta e sa arabeleng haholo, e leng se fokotsang ka katleho palo ya cyanide e lokolohileng e fumanehang bakeng sa ho ntshwa kgauta . Ho thehwa ha di-complex tsena tsa thiocyanate ha ho eketse feela tshebediso ya cyanide empa hape ho ama bokgoni bohle ba tshebetso ya cyanidation ya kgauta.

Ho utloisisa mekhoa ena ea tšebeliso e fana ka lintlha tsa bohlokoa bakeng sa basebetsi ba indasteri ea merafo ea khauta. Ka ho beha leihlo ka hloko le ho laola maemo a ts'ebetso ea cyanidation, hoa khonahala ho fokotsa ts'ebeliso ea cyanide, ho ntlafatsa litekanyetso tsa ho khutlisa khauta, le ho fokotsa sebaka sa tikoloho ea ts'ebetso ea merafo ea khauta.