Lub luag haujlwm thiab kev siv ntawm Sodium Cyanide Solution

sodium cyanide Kev daws, nrog rau cov tshuaj formula NaCN nyob rau hauv lub xeev aqueous, yog ib yam khoom tseem ceeb ntawm kev lag luam thiab tshuaj lom neeg tseem ceeb, txawm tias nws muaj tshuaj lom heev. Kab lus no delves rau hauv ntau lub luag haujlwm thiab kev siv ntawm Sodium cyanide Daws.

1. Kub thiab Precious Hlau Extraction hauv Mining

1.1 Txheej txheem piav qhia

Ib qho ntawm feem zoo-paub kev siv ntawm sodium cyanide daws yog nyob rau hauv kev lag luam mining, tshwj xeeb tshaj yog rau kev rho tawm ntawm kub thiab lwm yam hlau muaj nuj nqis. Thaum twg Sodium Cyanide cov tshuaj yog tov nrog kub - bearing ore, kub nyob rau hauv lub ore reacts nrog cov cyanide ions nyob rau hauv lub xub ntiag ntawm oxygen los ntawm huab cua thiab dej. Cov tshuaj tiv thaiv no tsim cov kub soluble - cyanide complex. Thaum cov kub nyob hauv daim ntawv soluble no, nws tuaj yeem raug cais tawm ntawm cov khoom siv ore ntxiv.

1.2 Txoj kev ntawm Extraction

Muaj ob txoj hauv kev siv hauv cov txheej txheem rho tawm no:

• Tank Leaching: Cov ore kub yog muab tso rau hauv lub tank loj thiab sib tov nrog cov sodium cyanide daws. Tom qab qee lub sijhawm, thaum kub tau yaj mus rau hauv cov tshuaj, cov tshuaj siv tshuaj cyanide nrog rau cov ore seem yog pauv mus rau cov chaw cia khoom.

• Heap Leaching: Cov ore kub crushed yog piled rau hauv heaps, thiab cov sodium cyanide tov yog poured tshaj lub heap. Raws li cov tshuaj percolates los ntawm cov ore, nws dissolves kub. Cov tshuaj uas muaj cov kub yaj accumulates nyob rau hauv qab ntawm lub heap thiab ces muab sau rau ntxiv ua kom rov qab cov kub.

2. Kev Txuas Hluav Taws Xob

2.1 Muaj nuj nqi hauv Electroplating Baths

Sodium cyanide tov yog siv nyob rau hauv electroplating da dej rau hlau xws li tooj liab, nyiaj, cadmium, thiab zinc. Hauv electroplating, lub hom phiaj yog tso ib txheej nyias ntawm cov hlau xav tau mus rau ib qho substrate. Cyanide ions hauv cov tshuaj sodium cyanide ua si ntau lub luag haujlwm tseem ceeb. Lawv txo cov anode polarization, xyuas kom meej tias lub anode, qhov chaw ntawm cov hlau yuav plated, dissolves tusyees, uas yog ib qho tseem ceeb rau ib tug zoo ib yam ntawm cov hlau ions rau hauv lub plating tov. Tsis tas li ntawd, lub xub ntiag ntawm cyanide ions pab nyob rau hauv stabilizing cov tshuaj electroplating, tiv thaiv cov nag lossis daus ntawm cov hlau sib txuas uas tuaj yeem cuam tshuam cov txheej txheem plating. Lawv kuj txhim kho cathode polarization, uas ua rau muaj kev sib txuam ntau ntawm cov hlau mus rau cathode, lub substrate raug plated, ua rau cov txheej txheem zoo dua thiab ntau dua.

3. Tshuaj Synthesis

3.1 Kev tsim cov Inorganic Cyanides

Sodium cyanide tov yog ib qho tseem ceeb pib cov khoom siv los tsim ntau yam inorganic cyanides. Piv txwv li, ib qho inorganic cyanide ua los ntawm nws muaj kev siv hauv kev lag luam khoom noj khoom haus raws li tus neeg sawv cev anticaking thiab hauv kev tsim cov xim xiav. Ib qho ntxiv, thaum tau txais los ntawm cov tshuaj tiv thaiv nrog qee cov ntsev, yog siv rau hauv daim ntawv thov zoo xws li sodium cyanide, xws li hauv kev tshwj xeeb kub rho tawm cov txheej txheem thiab qee cov organic syntheses.

3.2 Synthesis of Organic Compounds

Nyob rau hauv cov organic chemistry, sodium cyanide tov yog siv los qhia cov pab pawg neeg cyano mus rau hauv cov organic molecules, uas yog ib qho tseem ceeb kauj ruam nyob rau hauv lub synthesis ntawm ntau organic tebchaw. Thaum ib qho alkyl halide reacts nrog sodium cyanide tov, ib tug compound yog tsim. Cov tshuaj no tuaj yeem hloov pauv mus rau lwm pawg ua haujlwm xws li carboxylic acids thiab amines los ntawm cov tshuaj tiv thaiv tom ntej, ua sodium cyanide tov ib qho tseem ceeb reagent nyob rau hauv cov synthesis ntawm kws tshuaj, agrochemicals, thiab ntau yam organic cov ntaub ntawv.

4. Kev ntxuav hlau thiab kev kho deg

4.1 Dissolving Hlau Oxides thiab impurities

Sodium cyanide tov tuaj yeem siv los ntxuav cov hlau. Qee cov hlau oxides thiab impurities ntawm cov hlau tuaj yeem hnov ​​​​mob nrog cov cyanide ions. Piv txwv li, tooj liab oxide nyob rau saum npoo ntawm tooj liab tuaj yeem hnov ​​​​mob nrog sodium cyanide tov nyob rau hauv qee yam mob. Cov cyanide ions tsim complexes nrog cov hlau ions los ntawm oxides, tshem tawm cov oxide txheej thiab tawm hauv cov hlau huv si. Qhov no muaj txiaj ntsig zoo hauv kev npaj cov hlau rau kev ua haujlwm ntxiv xws li pleev xim, soldering, lossis electroplating.

5. Kev Tiv Thaiv Kab Tsuag (tseem txwv thiab nruj heev)

5.1 Siv ua tshuaj tua kab mob

Yav dhau los, sodium cyanide tov tau siv los ua tshuaj tua kab mob. Nws cov tshuaj lom heev ua rau nws tuag rau nas. Txawm li cas los xij, vim nws qhov hnyav heev tsis yog rau cov kab tsuag nkaus xwb tab sis kuj rau cov kab mob uas tsis yog hom kab mob, suav nrog tib neeg, kev siv tshuaj tua kab mob tau txwv nruj heev hauv ntau lub tebchaws. Qhov kev pheej hmoo ntawm kev raug xwm txheej thiab muaj peev xwm ua rau muaj kev sib kis ntawm ib puag ncig yog kev txhawj xeeb loj uas cuam tshuam nrog kev siv tshuaj tua kab.

Kev Txiav Txim Siab Kev Nyab Xeeb

Nws yog ib qho tseem ceeb tshaj plaws kom nco ntsoov tias sodium cyanide tov yog tshuaj lom heev. Txawm tias me me tuaj yeem ua rau tuag taus yog tias noj, nqus, lossis nqus los ntawm daim tawv nqaij. Thaum nyob rau hauv kev sib cuag nrog cov kua qaub los yog huab cua ntub, nws tuaj yeem tso cov pa roj hydrogen cyanide heev. Yog li ntawd, cov txheej txheem kev nyab xeeb nruj yuav tsum tau ua raws li thaum tuav cov tshuaj sodium cyanide. Cov neeg ua haujlwm koom nrog kev siv yuav tsum raug cob qhia kom raug, hnav cov khoom tiv thaiv tus kheej tsim nyog, thiab ua haujlwm hauv qhov chaw muaj cua zoo. Thaum muaj xwm txheej nchuav los yog raug, yuav tsum tau ua raws li cov txheej txheem thaum muaj xwm txheej ceev los tiv thaiv kev puas tsuaj loj rau tib neeg kev noj qab haus huv thiab ib puag ncig.

Hauv kev xaus, sodium cyanide tov, txawm tias nws qhov xwm txheej txaus ntshai, ua lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam. Nws cov ntawv thov muaj xws li kev rho tawm cov hlau muaj txiaj ntsig mus rau cov tshuaj synthesis thiab kev kho hlau. Txawm li cas los xij, cov kev pheej hmoo cuam tshuam yuav tsum tau ua tib zoo saib xyuas thiab tswj xyuas kom muaj kev nyab xeeb.