Kev tsim cov Calcium Carbide (CaC₂): Cov Txheej Txheem Hluav Taws Xob Hluav Taws Xob

Calcium carbide (CaC₂)yog ib qho inorganic compound synthesized los ntawm siab -kubcarbothermal txotxheej txheem, feem ntau siv ibhluav taws xob arc rauv. Cov qauv no, tsim nyob rau hauv lub xyoo pua puv 19, tseem yog tus qauv thoob ntiaj teb rau kev lag luam- nplai ntau lawm vim nws qhov ua tau zoo thiab muaj peev xwm los tawm tau siab -purity CaC₂. Hauv qab no, peb rhuav tshem cov txheej txheem tsim khoom, los ntawm cov khoom siv raw mus rau cov khoom kawg, nrog rau kev tsom mus rau kev lag luam- nplai kev ua haujlwm.

 

1. Cov khoom siv raw​

Kev tsim tawm ntawmcalcium carbidecia siab rau ob qho tseem ceeb raw khoom:

1.1 Txiv qaub (Calcium Oxide, CaO)​

Qhov chaw: Muab los ntawm limestone (CaCO₃), ib pob zeb sedimentary uas muaj nyob rau hauv qhov xwm txheej.

Kev ua haujlwm: Limestone yog rhuab nyob rau hauv rotary kilns ntawm ~ 900℃tsav tawm carbon dioxide, ua kua qaub:

Kev Xav Tau Zoo: High-purity lime (>95% CaO) yog qhov tseem ceeb los txo cov impurities (piv txwv li, silica, alumina) hauv qhov kawg CaC₂.

1.2 Coke (Carbon, C)​

Hom: Anthracite coal or petroleum coke, chosen for their high carbon content (>90%) thiab qis sulfur / tshauv.

Lub luag haujlwm: Ua raws li ob qho tib si atxo tus neeg sawv cev( pub dawb electrons los txo CaO) thiab ib qholub zog(hluav taws kub hnyiab tau hluav taws kub).

 

2. Cov Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob: Cov Khoom Siv Hluav Taws Xob​

Lub tshuab hluav taws xob arc rauv yog lub cylindrical steel hlab kab nrogrefractory bricks(piv txwv li, magnesite, dolomite) tiv taus kub tshaj 2000 degree. Cov khoom tseem ceeb muaj xws li:

Graphite electrodes: Peb txoj kab hluav taws xob ntsug (zoo, tsis zoo, nruab nrab) uas ua kom muaj hluav taws xob hnyav thaum siv hluav taws xob siab -voltage hluav taws xob (10-30 kV).

Kev them nyiaj yug System: Hoppers thiab conveyor siv los pub txiv qaub thiab coke rau hauv qhov cub hauv qhov sib piv meej.

Tapping Ports: Cov qhov hluav taws xob ntawm lub cub tawg kom ntws cov calcium carbide molten.

Gas Exhaust: Lub qhov cub kom ntes thiab tso pa carbon monoxide (CO) byproduct.

 

3. Kauj Ruam -los ntawm - Kauj Ruam Ntau Lawm​

Kauj Ruam 1: Kev Npaj Khoom Raw​

Txiv qaub thiab coke yog crushed, qhuav (kom tshem tawm noo noo), thiab blended nyob rau hauv ib tug1: 3 molar ratio(los ntawm qhov hnyav: ~ 1 tuj txiv qaub rau 3 tons ntawm coke). Qhov piv no ua kom tiav cov tshuaj tiv thaiv thaum txo qis cov pa roj carbon monoxide.

Kauj Ruam 2: Them lub Rauv​

Cov txiv qaub qhuav-coke sib tov yog pub rau hauv hluav taws xob arc rauv los ntawm lub plhaw. Lub qhov cub yog preheated rau ~ 1500℃los pib cov tshuaj tiv thaiv.

Kauj Ruam 3: Tsim Cov Hluav Taws Xob Arc​

High- hluav taws xob hluav taws xob tau dhau los ntawm graphite electrodes, tsim kom muaj hluav taws xob arc nrog qhov kub thiab txias2000-2500 degree. Qhov no kub heev melts cov ntaub ntawv raw thiab tsav lub carbothermal txo cov tshuaj tiv thaiv.

Kauj Ruam 4: Carbothermal Reduction Reaction​

Ntawm cov kub no, coke txo calcium oxide rau calcium carbide:

Ntsiab Lus:

Cov tshuaj tiv thaiv yogendothermic(yuav tsum tau cua sov) tab sis txhawb nqa los ntawm hluav taws xob arc.

Cov pa roj carbon monoxide (CO) raug tso tawm raws li cov khoom lag luam thiab raug hlawv rau lub zog (kom muaj zog rau lub qhov cub) lossis kho kom tau raws li kev cai ib puag ncig.

Kauj Ruam 5: Tapping thiab Txias​

Molten calcium carbide (density ~ 2.2 g / cm³) sau rau ntawm lub cub tawg hauv qab, qhov twg nws yog ncua sij hawm "tapping" rau hauv preheated steel pwm los yog ladles. Cov kua carbide cools thiab solidifies rau greyish - cov pob dub nyob rau hauv feeb.

Kauj Ruam 6: Crushing thiab tshuaj ntsuam​

Solidified calcium carbide yog crushed rau hauv me me pieces (10-50 mm lumps) thiab tshuaj ntsuam cais nplua (hmoov) los ntawm usable chunks. Kev nplua yog feem ntau rov qab mus rau hauv lub qhov cub kom txhim kho cov txiaj ntsig.

Kauj Ruam 7: Ntim thiab Cia​

Ua tiav calcium carbide yog ntim rau hauvairtight, noo noo-cov ntaub ntawv pov thawj(piv txwv li, steel nruas, hnab polypropylene nrog desiccants) los tiv thaiv cov tshuaj tiv thaiv nrog ambient ya raws, uas yuav tsim cov roj acetylene thiab ua rau muaj kev phom sij tawg.

 

4. Cov txheej txheem tseem ceeb tswj​

Txhawm rau kom muaj txiaj ntsig thiab kev nyab xeeb, cov neeg tsim khoom saib xyuas:

Kub: Kev tuav 2000-2500℃yog qhov tseem ceeb- tsawg dhau, thiab cov tshuaj tiv thaiv tsis tiav; siab dhau lawm, thiab cov nqi hluav taws xob nce ntxiv.

Raw Khoom Zoo: Cov impurities (piv txwv li, sulfur, phosphorus) nyob rau hauv txiv qaub los yog coke tuaj yeem paug CaC₂, txo nws cov kev siv tau hauv siab - daim ntaub ntawv purity (xws li kev tsim tshuaj).

Gas Management: CO emissions yog tswj los ntawm scrubbers los yog combustion kom ua raws li ib puag ncig cov qauv.

 

5. Muaj Scale thiab tso zis​

Ib qho niaj hnub hluav taws xob arc rauv tuaj yeem tsim tau50-200 tons ntawm calcium carbide ib hnub twg. Cov chaw tsim khoom loj muaj xws li Tuam Tshoj, Russia, Is Nrias teb, thiab Tebchaws Meskas, qhov twg limestone thiab hluav taws xob pheej yig tau yooj yim.

 

6. Kev xav txog kev nyab xeeb thiab ib puag ncig​

Kev phom sij: Thaum tshav kub kub heev, cov pa roj CO lom, thiab cov khoom siv molten reactive yuav tsum muaj kev ruaj ntseg nruj (xws li, PPE, qhov cua).

Pov tseg: Cov khoom siv hluav taws xob siv hluav taws xob tau rov ua dua tshiab, thiab cov pa roj CO feem ntau rov qab siv rau kev ua haujlwm ntawm lub tshuab fais fab, txo cov pa tawm.

 

Vim li cas thiaj xaiv ZhenAn Lub Tuam Txhab rau High -Zoo Calcium Carbide?​

ZhenAn Lub Tuam Txhab muab cov calcium carbide los ntawm ISO- cov nroj tsuag tau ntawv pov thawj uas siv cov tshuab hluav taws xob arc rauv rauv. Peb cov khoom muab:

Siab Purity80-98% CaC₂ uas tsis muaj impurities (arsenic<10 ppm, phosphorus <20 ppm).

Zoo ib yam: Kev sim nruj (piv txwv li, titration, XRF) kom paub meej batch-rau-batch kev ntseeg tau.

Custom Sizes: Lumps, granules, los yog hmoov raws li koj daim ntawv thov (welding, steelmaking, tshuaj).

 

 

📧 Tiv tauj peb ntawm​ info@zaferroalloy.com kom paub ntau ntxiv txog peb cov txheej txheem calcium carbide ntau lawm thiab cov khoom muag. Cia ZhenAn ua koj tus khub ntseeg siab rau kev lag luam chemical!