Kev Siv Sodium Cyanide hauv Kev Lag Luam Metallurgical thiab Kev Sib Koom

Introduction

Sodium cyanide (NaCN), ua ib qho tshuaj ua kom sib xyaw thiab ua kom sib xyaw zoo, ua lub luag haujlwm tseem ceeb hauv Kev Lag Luam Metallurgical . Nws cov khoom siv tshuaj lom neeg tshwj xeeb ua rau nws tsim cov khoom sib xyaw ruaj khov nrog ntau yam hlau ions, yog li ua tiav kev rho tawm, sib cais, thiab ntxuav cov hlau. Tsab xov xwm no yuav tshuaj xyuas cov ntawv thov tseem ceeb ntawm Sodium Cyanide hauv kev lag luam metallurgical thiab sau cov ntsiab lus tseem ceeb raws li kev paub dhau los.

I. Core Siv Sodium Cyanide hauv Kev Lag Luam Metallurgical

1.Gold Extraction (Cyanidation txheej txheem rau kub Extraction)

• Lub Ntsiab Cai : Sodium cyanide ua rau kub kub sib xyaw ua ke thaum muaj oxygen los tsim cov kub cyanide uas yaj tau (xws li [Au(CN)₂]⁻). Tom qab ntawd kub rov qab los ntawm kev siv cov pa roj carbon activated adsorption lossis zinc displacement.

• Qhov Zoo : Nws muaj kev hloov pauv zoo rau cov pob zeb kub qis thiab cov pob zeb nyuaj, thiab tus nqi leaching tuaj yeem ncav cuag ntau dua 90%.

• Rooj plaub : Ib lub qhov av kub tau nce tus nqi rov qab tau kub mus txog 92% los ntawm kev ua kom zoo dua qhov concentration ntawm sodium cyanide (0.05% -0.1%) thiab lub sijhawm leaching (24-48 teev).

2.Electroplating thiab hlau nto kho

• Lub Hom Phiaj : Ua ib qho khoom siv ntxiv rau hauv Electroplating cov kev daws teeb meem, nws yog siv rau electroplating hlau xws li tooj liab, zinc, thiab nyiaj, uas tuaj yeem txhim kho qhov sib xws thiab kev nplaum ntawm cov txheej.

• Kev Ceev Faj : Qhov concentration ntawm cyanide yuav tsum tau tswj hwm nruj me ntsis kom tsis txhob muaj cov khoom seem ntau dhau, uas yuav ua rau muaj kuab paug rau ib puag ncig.

3.Metal sib cais thiab purification

• Cov Xwm Txheej Siv : Xaiv cov hlau uas xav tau (xws li nickel thiab cobalt) los ntawm cov pob zeb polymetallic, lossis tshem tawm cov impurity ions (xws li hlau thiab txhuas).

• Cov Ntsiab Lus Txuj Ci : Ua tiav cov kauj ruam sib xyaw ntawm cov hlau sib txawv los ntawm kev kho qhov pH thiab cov tshuaj ntawm Sodium cyanide.

II. Kev paub tseem ceeb thiab kev ua kom zoo tshaj plaws hauv kev siv Sodium Cyanide

1.Control of Concentration thiab Dosage

• Txoj Cai Empirical : Thaum lub sijhawm leaching kub, qhov concentration ntawm sodium cyanide feem ntau yog 0.03% -0.1%, thiab nws yuav tsum tau kho raws li cov khoom ntawm cov ore (xws li cov ntsiab lus carbon thiab cov ntsiab lus sulfide).

• Rooj plaub : Ib lub qhov av pom tias kev siv sodium cyanide ntau ntxiv tsis zoo li qub. Tom qab kev tshawb nrhiav, pom tias cov ntsiab lus sulfur hauv cov hlau ntau tshaj qhov tus qauv. Qhov teeb meem tau daws tom qab siv cov txheej txheem ua ntej (roasting lossis oxidation).

2.Kev ua kom zoo ntawm Leaching Conditions

• Tus Nqi pH : Kev tswj hwm ib puag ncig alkaline (pH 10-11) tuaj yeem tiv thaiv kev tsim cov roj hydrogen cyanide thiab txhim kho Leaching Efficiency tib lub sijhawm.

• Kub : Kev cua sov kom tsim nyog (30-40 ° C) tuaj yeem ua kom cov tshuaj tiv thaiv sai dua, tab sis kev siv zog thiab tus nqi yuav tsum sib npaug.

3. Kev tiv thaiv ib puag ncig thiab kev tswj hwm kev nyab xeeb

• Kev Kho Dej Pov Tseg : Siv txoj kev alkaline chlorination (sodium hypochlorite + sodium hydroxide) los rhuav tshem cyanide kom ntseeg tau tias cov dej tawm ua tau raws li tus qauv (CN⁻ concentration tsawg dua 0.5 mg/L).

• Kev Tiv Thaiv Kev Nyab Xeeb : Nruab nrog cov kab ntau lawm uas kaw tag nrho, lub kaw lus saib xyuas tsis siv neeg, thiab lub cuab yeej txau dej thaum muaj xwm txheej ceev. Cov neeg ua haujlwm yuav tsum hnav khaub ncaws tiv thaiv tshuaj lom neeg thiab lub ntsej muag roj.

III. Tej teeb meem thiab kev daws teeb meem

1.Risk ntawm Cyanide Poisoning

• Kev Tiv Thaiv : Tsis tu ncua xyuas qhov nruj ntawm cov khoom siv thiab tsis txhob kov cov kua cyanide nrog cov tshuaj acidic (kom tiv thaiv kev tsim cov roj HCN lom heev).

• Kev Kho Mob Thaum Muaj Xwm Ceev : Tam sim ntawd yaug qhov chaw uas raug daim tawv nqaij nrog dej huv ntau. Yog tias noj tsis tau, tus neeg mob yuav tsum nrhiav kev kho mob tam sim ntawd thiab txhaj tshuaj sodium thiosulfate kom tshem cov tshuaj lom.

2.Kev txo qis hauv Leaching Efficiency

• Tej Yam Ua Tau : Qib oxidation tsis txaus ntawm cov ore, kev lwj ntawm sodium cyanide (vim yog lub teeb lossis kub siab), thiab kev cuam tshuam ntawm cov impurity ions (xws li txhuas thiab tooj liab).

• Cov Kev Daws Teeb Meem : Ntxiv cov tshuaj oxidant (xws li hydrogen peroxide) los txhawb kev oxidation ntawm cov ore, lossis tshem tawm cov impurities los ntawm kev kho ua ntej.

IV. Yav Tom Ntej Trends thiab Alternative Technologies

• Cov Txuj Ci Siv Los Ntxuav Uas Tsis Muaj Cyanide : Cov txheej txheem ntsuab xws li txoj kev thiourea thiab txoj kev bioleaching maj mam tshwm sim, uas tuaj yeem txo cov kev pheej hmoo ntawm ib puag ncig.

• Kev Tswj Xyuas Txawj Ntse : Kev saib xyuas lub sijhawm tiag tiag ntawm cov yam ntxwv xws li qhov concentration ntawm sodium cyanide thiab pH tus nqi los ntawm AI algorithms kom ua tiav kev tswj hwm meej.

xaus

Sodium cyanide muaj ob qho tib si kev ua haujlwm zoo thiab kev phom sij hauv kev lag luam hlau. Kev siv kom raug yog nyob ntawm kev tsim cov txheej txheem tshawb fawb, kev tswj hwm kev nyab xeeb nruj, thiab kev tsim kho tshiab ntawm thev naus laus zis. Los ntawm kev ua kom zoo dua cov kev ua haujlwm thiab txhawb nqa kev tiv thaiv ib puag ncig , nws tus nqi tuaj yeem ua kom siab tshaj plaws thiab txo qis kev pheej hmoo, txhawb kev lag luam kom txhim kho mus rau hauv kev coj ntsuab thiab ruaj khov.