Bincike akan Fasahar Magani na Mahimmancin Zinare kafin Cyanide Leaching

Yin amfani da sinadarin Cyanide na Zinare Mai Tsami tsari ne na gargajiya na haƙo zinare. Duk da haka, saboda sarkakiyar yanayin ma'adanai, sau da yawa ana buƙatar yin amfani da shi kafin a haƙo zinare don inganta ingancin haƙori. Wannan labarin yana yin amfani da fasahar kafin a haƙo Cyanide , da nufin samar da ma'auni don samar da kayayyaki masu amfani.

I. Fasaha Pretreatment na Jiki

1. Nika mai kyau

Abubuwan da aka tattara na zinare suna ƙasa zuwa raga 325 ko mafi kyau ta hanyar kayan aiki kamar injin ƙwallon ƙwallon don raba cikakkiyar ma'adinin zinare daga gangue. Ayyukan da aka yi a cikin wani ma'adinin zinari ya nuna cewa niƙa mai kyau na iya ƙara yawan hasken zinari da kashi 40%, kuma ana iya ƙara yawan leaching da kashi 8-12%.

2. Nunawa da Cire Najasa

Ana amfani da kayan aiki kamar allon girgiza mai layi don cire datti kamar guntun itace da gutsuttsuran filastik. Shaidar da aka yi amfani da ita a cikin wani mai tattarawa ta nuna cewa bayan an tantance, yawan toshewar kayan aiki yana raguwa da kashi 70%, kuma asarar sha na cyanide yana raguwa da kashi 5%.

3. Cire Reagent Ruwa

Ga masu tattarawar flotation, ana amfani da tsarin "renicking - reagent department" mai matakai biyu don cire sinadaran flotation kamar xanthate da mai lamba 2 yadda ya kamata. Bayanan masana'antu sun nuna cewa bayan cire sinadaran, shan Sodium Cyanide yana raguwa da kashi 35%, kuma yawan sha na Carbon da aka kunna yana ƙaruwa da kashi 15%.

II. Fasaha Pretreatment Technology

1. Maganin Alkali

Ana ƙara lemun tsami don daidaita pH zuwa 10-11. ta yadda abubuwa masu cutarwa irin su zinc, arsenic, da antimony su zama gishiri mai narkewa. Bayan aikace-aikacensa a cikin wani ma'adinin zinari mai arsenic, an rage yawan amfani da cyanide daga 12 kg/t zuwa 6.5 kg/t, kuma yawan leaching yana ƙaruwa da kashi 9%.

2. Maganin Oxidation

• Iska Oxidation

Ta hanyar motsa jiki da motsawa don oxidize abubuwan ragewa, a cikin wani nau'in nau'in zinari na pyrrhotite, bayan pretreatment, ƙarfin ɓangaren litattafan almara yana ƙaruwa daga -150 mV zuwa + 200 mV, kuma an rage lokacin cyanidation da 40%.

• Ƙarin Oxidants

Idan adadin gubar nitrate ya kai kilogiram 0.5/t, yawan sinadarin sulfide ions zai iya raguwa da kashi 60%, kuma yawan fitar da sinadarin zai karu da kashi 7%. A wani ma'adinin jan ƙarfe da zinare, shan sinadarin sodium cyanide zai ragu da kashi 40% bayan an yi masa magani kafin a yi masa magani da hydrogen peroxide.

3. Leaching Synergistic tare da Ammoniya-Cyanide

Ruwan ammonia (tare da maida hankali na 1-3%) ana ƙara shi zuwa ma'aunin zinare mai ɗauke da jan ƙarfe don samar da barga a cikin rukunin ammonia na jan karfe. Gwaje-gwajen masana'antu sun nuna cewa ana iya sarrafa ƙimar leaching tagulla a ƙasa da kashi 5%, kuma adadin leaching na zinare yana ƙaruwa da kashi 12%.

III. Fasahar Kula da Halittu

Ana amfani da ƙananan ƙwayoyin cuta irin su Thiobacillus ferrooxidans don lalata ma'adanai sulfide. Bayan kwanaki 20 na nazarin halittu oxidation a cikin wani refractory zinariya ma'adanin, da bazuwar adadin pyrite ya kai 92%, da zinariya leaching kudi ya karu daga 35% zuwa 88%. Wannan fasaha yana da fa'idar abokantakar muhalli, amma lokacin jiyya yana da tsayi sosai (kwanaki 15-30).

IV. Shawarwari don Zaɓin Tsari

Tsarin pretreatment yana buƙatar zaɓi gabaɗaya bisa ga yanayin ma'adinan:

• Don ma'adinan da ke da babban sulfur da babban abun ciki na arsenic, oxidation na halitta ko gasasshen pretreatment yakamata a fifita shi.

• Don ma'aunin zinari mai ɗauke da jan ƙarfe, ana ba da shawarar tsarin ammonia-cyanide.

• Don maida hankali kan iyo, ana buƙatar ƙarfafa maganin cire reagent.

• Don ma'adanai na al'ada, ana iya ɗaukar tsarin haɗin gwiwa na leaching alkaline da ƙari na oxidant.

Kammalawa:

Yin amfani da hankali na fasahohin riga-kafi na iya inganta tasirin leaching cyanide sosai. A nan gaba, ya zama dole don ƙara nazarin ingantacciyar hanyar amfani da ƙarancin amfani da haɗe-haɗe-haɗe-haɗe don haɓaka haɓakar koren fasahar hakar gwal.