Dab tsi yog kev lag luam siv ntawm cyanide?

Cyanide, ib qho tshuaj lom neeg uas muaj pawg cyano nrog rau carbon atom triple - sib txuas nrog ib qho nitrogen atom, yog paub zoo txog nws cov tshuaj lom neeg siab. Txawm li cas los xij, nws kuj ua lub luag haujlwm tseem ceeb hauv ntau yam lag luam vim nws cov khoom siv tshuaj lom neeg tshwj xeeb.

1. Kev lag luam Mining

Ib qho ntawm cov kev siv tseem ceeb tshaj plaws ntawm Cyanide yog nyob rau hauv kev lag luam Mining , tshwj xeeb tshaj yog nyob rau hauv kev rho tawm cov hlau muaj nqis xws li kub thiab nyiaj. Cov txheej txheem no hu ua cyanidation lossis cov txheej txheem cyanide.

kub

thiab ilver ExtractionS

• Kev Ua Cov Hlau : Cov tshuaj cyanide yog siv los yaj kub thiab nyiaj ntawm cov hlau uas tau khawb. Kub, nyob rau hauv nws daim ntawv ib txwm muaj, muaj peev xwm oxidation siab heev. Tab sis thaum nyob rau hauv qhov muaj cyanide ions (\(CN^-\)), kub tsim cov ion complex uas yaj tau. Qhov kev sib cuam tshuam tshuaj no ua rau kub yaj hauv cov tshuaj cyanide, cais nws ntawm lwm cov khoom ntawm cov hlau.

• Zoo sib xws rau cov nyiaj, nws reacts nrog cyanide nyob rau hauv ib tug piv txwv los tsim ib tug soluble complex, uas yuav muab rho tawm los ntawm lub ore matrix.

• Tom qab cov hlau tseem ceeb tau yaj hauv cov tshuaj cyanide, lawv tuaj yeem rov qab los ntawm cov txheej txheem electrochemical xws li electrowinning. Hauv electrowinning, hluav taws xob tam sim no dhau los ntawm kev daws teeb meem, ua rau cov hlau ions tau tso rau hauv cathode. Lwm txoj hauv kev yog nag lossis daus, piv txwv li, los ntawm kev ntxiv cov hlau ntau dua li zinc. Cov zinc displaces kub los yog nyiaj los ntawm complex ion nyob rau hauv cov tshuaj, enabling lub rov qab ntawm precious hlau.

2. Kev tsim tshuaj lom neeg

Cyanide tebchaw yog qhov tseem ceeb hauv kev tsim khoom ntawm ntau yam tshuaj.

Yas

• Cyanide derivatives yog siv los tsim cov roj hmab hluavtaws thiab cov yas. Piv txwv li, acrylonitrile, uas muaj ib pawg cyano, yog ib qho tseem ceeb monomer hauv kev tsim cov polyacrylonitrile (PAN). PAN yog siv los ua acrylic fibers, uas yog siv rau hauv kev lag luam textile los ua khaub ncaws, ntaub pua plag, thiab upholstery. Los ntawm cov txheej txheem polymerization, acrylonitrile molecules txuas ua ke los tsim cov saw ntev ntawm polyacrylonitrile.

Dyes

• Qee cov ntaub ntawv dyes yog tsim los siv cov tshuaj cyanide. Cyanide - muaj cov tshuaj sib xyaw ua ke tuaj yeem siv los qhia cov pab pawg ua haujlwm rau hauv cov xim molecules, uas tuaj yeem cuam tshuam rau lawv cov xim, solubility, thiab ceev ceev zog. Piv txwv li, qee cov dyes reactive uas tuaj yeem tsim cov ntawv cog lus nrog textile fibers thaum lub sij hawm dyeing tej zaum yuav muaj cyanide - muab tau los ua haujlwm pab pawg, ua rau cov xim muaj peev xwm ua raws li cov ntaub ntawv zoo.

pharmaceuticals

• Cyanide ua lub luag haujlwm hauv kev tsim tshuaj thiab cov khoom xyaw tshuaj nquag (APIs). Txawm hais tias kev siv cov cyanide hauv cov chaw muag tshuaj tau tswj hwm zoo vim nws cov tshuaj lom, nws tuaj yeem koom nrog cov tshuaj lom neeg thaum lub sijhawm ua ke ntawm complex organic molecules. Piv txwv li, nyob rau hauv ib co multi-step synthetic txoj kev rau tshuaj, cyanide tej zaum yuav siv tau los qhia ib pab pawg neeg cyano rau hauv lub molecule. Cov pab pawg cyano no tuaj yeem hloov kho ntxiv los ntawm cov txheej txheem xws li hydrolysis los tsim cov carboxylic acids, lossis txo kom tsim cov amines, uas yog cov pab pawg tseem ceeb hauv ntau cov tshuaj.

3. Electroplating thiab hlau kho

Cyanide cov kev daws teeb meem yog dav siv hauv cov txheej txheem electroplating.

Jewelry Manufacturing

• Hauv kev tsim cov hniav nyiaj hniav kub zoo, cyanide-raws li electroplating kev daws teeb meem yog siv los tso cov hlau xws li kub, nyiaj, thiab tooj liab mus rau qhov chaw. Cyanide ua raws li ib tug complexing neeg sawv cev, uas yuav pab kom ua tiav ib tug du, uniform, thiab adherent hlau txheej. Piv txwv li, nyob rau hauv kub electroplating, kub - cyanide complex nyob rau hauv cov tshuaj tso cai rau kev tswj kom zoo dua ntawm deposition tus nqi thiab qhov zoo ntawm cov kub txheej ntawm cov hniav nyiaj hniav kub substrate. Thaum lub sij hawm electroplating, kub - cyanide complex dissociates ntawm lub cathode, thiab cov kub ions raug txo los ua ib tug nyias, txawm txheej ntawm kub nyob rau saum npoo ntawm cov hniav nyiaj hniav kub.

electronics

• Hauv kev lag luam hluav taws xob, cyanide-based electroplating yog siv los pleev xim rau cov khoom siv. Qhov no txhim kho cov conductivity thiab corrosion kuj ntawm hluav taws xob qhov chaw. Piv txwv li, tooj liab - cyanide electroplating yog siv los tso ib txheej nyias ntawm tooj liab ntawm cov ntawv luam tawm Circuit Board (PCBs). Cov txheej tooj liab muab cov khoom siv hluav taws xob zoo, thiab kev siv cov cyanide hauv chav da dej electroplating pab kom tau txais ib qho kev sib xws thiab qhov tsis xws luag - dawb tooj liab txheej, uas yog qhov tseem ceeb rau kev ua haujlwm zoo ntawm PCB.

4. Lwm cov ntawv thov kev lag luam

Hlau Quenching

• Cyanide compounds tuaj yeem siv rau hauv kev kho cua sov ntawm cov hlau, tshwj xeeb hauv cov txheej txheem hu ua cyaniding. Hauv cyaniding, steel qhov chaw yog rhuab nyob rau hauv ib da dej uas muaj cyanide ntsev. Cov txheej txheem no qhia txog carbon thiab nitrogen rau saum npoo ntawm cov hlau, hardening nws. Raws li cov cyanide decomposes ntawm qhov kub siab, cov pa roj carbon thiab nitrogen atoms diffuse mus rau hauv cov hlau nto, tsim cov tebchaw nyuaj xws li hlau nitrides thiab carbides. Cov khoom sib xyaw no txhim kho qhov hnav thiab qaug zog ntawm cov hlau, ua rau nws ruaj khov rau ntau yam kev siv.

Organic Synthesis

• Cyanide siv los ua kom ib pawg cyano (\(-CN\)) nkag mus rau hauv cov organic molecules, tsim cov organic cyanides (nitriles). Cov nitriles no tuaj yeem hloov mus ua lwm pawg ua haujlwm. Piv txwv li, hydrolysis ntawm nitrile nyob rau hauv qhov muaj cov kua qaub lossis lub hauv paus tuaj yeem ua rau muaj carboxylic acid. Kev txo qis ntawm nitrile tuaj yeem ua rau muaj amine. Qhov no ua rau cyanide yog ib qho khoom siv tseem ceeb hauv kev tsim ntau yam organic compounds, suav nrog cov uas siv rau hauv kev tsim cov tshuaj tsw qab, tsw qab, thiab lwm yam tshuaj tshwj xeeb.

Kev tsim khoom ntawm Lwm Cov Tshuaj

• Cyanide yog siv los tsim cov tshuaj xws li cyanuric chloride. Cyanuric chloride yog ib qho tseem ceeb hauv nruab nrab ntawm kev tsim tshuaj tua kab, tshuaj tua kab, thiab dyes. Nws yog tsim los ntawm trimerization ntawm cyanogen chloride, uas yog feem ntau synthesized los ntawm cyanide qhov chaw. Los ntawm kev hloov tshuaj lom neeg no, cyanide pab txhawb kev tsim cov tebchaw uas tseem ceeb rau ntau yam kev lag luam, los ntawm kev ua liaj ua teb mus rau textile dyeing.

Hauv kev xaus, txawm tias nws cov xwm txheej muaj kuab lom heev, cyanide cov tshuaj lom neeg tsis zoo ua rau nws yog qhov tseem ceeb hauv ntau cov txheej txheem kev lag luam. Txawm li cas los xij, vim nws qhov kev mob hnyav heev, kev ntsuas kev nyab xeeb nruj thiab kev tswj hwm ib puag ncig yog nyob rau hauv qhov chaw kom ntseeg tau tias nws muaj kev tuav, siv, thiab pov tseg hauv chaw tsim khoom.