Amfanin Cyanide a cikin Tsarin Cyanidation na Zinariya

Tsarin cyanidation muhimmin ginshiki ne a cikin fitar da zinare daga ma'adanai. Fahimtar amfani da sodium cyanide a lokacin wannan tsari yana da mahimmanci don inganta ingancin aiki da rage tasirin muhalli. Wannan labarin ya yi nazari kan hanyoyi daban-daban da ke taimakawa wajen shan sodium Cyanide a cikin tsarin cyanidation na zinare.

1. Autodecomposition

Sodium cyanide yana shiga cikin rugujewar kai tsaye yayin aikin cyanidation. Wannan yana haifar da samuwar carbonic acid, formic acid, da ammonia. Halayen rugujewar kai tsaye na iya zama masu rikitarwa kuma abubuwa kamar zafin jiki, yawan maida hankali, da kasancewar wasu abubuwan kara kuzari suna shafar su.

2. Hydrolysis

Hydrolysis na sodium cyanide wani muhimmin hanyar amfani ne. Halayen da ke tsakanin ruwa da sodium cyanide sune kamar haka:

( H2O + NaCN HCN + NaOH )

Ana samar da sinadarin hydrogen cyanide (HCN), wani sinadari mai saurin canzawa da guba, a lokacin wannan hydrolysis. Adadin HCN da aka samar yana da alaƙa da alkalinity na maganin. Lokacin da aka kiyaye ƙimar pH a 12 ko sama da haka, maganin cyanide yana ci gaba da kasancewa mai karko. Duk da haka, abubuwan da za su iya rage ƙimar pH, kamar carbon dioxide daga iska, acid a cikin ruwan shafawa, divalent magnesium ions ( Mg2+ ) da trivalent aluminum ions ( A13+ ), da ma'adanai daban-daban a cikin ma'adinai ko samfuran oxidation na ma'adanai na sulfide , na iya hanzarta amsawar hydrolysis.

3. Samuwar Thiocyanate

Sodium cyanide yana aiki da ma'adanai irin sulfide kamar ƙarfe, jan ƙarfe, da arsenic don samar da hadaddun thiocyanate. Waɗannan halayen suna canza ions na cyanide zuwa nau'ikan da ba su da amsawa sosai, suna rage adadin cyanide kyauta da ake samu don cire zinare . Samuwar waɗannan hadaddun thiocyanate ba wai kawai yana ƙara yawan cyanide ba ne, har ma yana shafar ingancin tsarin cyanidation na zinare.

Fahimtar waɗannan hanyoyin amfani suna ba da haske mai mahimmanci ga masu aiki a cikin masana'antar hakar gwal. Ta hanyar kulawa da hankali da sarrafa yanayin tsarin aikin cyanidation, yana yiwuwa a rage yawan amfani da cyanide, inganta ƙimar dawo da zinari, da rage sawun muhalli na ayyukan hakar gwal.