Magnesium- tshwj xeebferro silicon, nrogFerroSilicon 75Raws li nws cov qib tseem ceeb, tshwj xeeb yog tsim los rau cov txheej txheem Pidgeon hauv magnesium ntau lawm:
Composition Requirements:Si 72% -78% (core txo cov ntsiab lus), impurities Al Tsawg dua lossis sib npaug 1.0%, Ca Less dua lossis sib npaug rau 2.0%, S Tsawg dua lossis sib npaug 0.02%, P Tsawg dua lossis sib npaug 0.04%, Ti Tsawg dua lossis sib npaug 0.1%, Mn Tsawg dua lossis sib npaug 0.3%;
Lub cev muaj zog:Melting point 1250-1350 degree, ceev 6.9-7.1 g / cm³, nyob rau hauv daim ntawv thaiv (10-50 mm, accounting rau ntau tshaj los yog sib npaug rau 90%), nrog thaiv kev ncaj ncees ntau tshaj los yog sib npaug rau 95% kom tsis txhob tawg thiab plua plav tiam thaum thauj thiab cia;
Core Advantages:High silicon txo kev ua haujlwm (txo kev ua tau zoo Ntau dua lossis sib npaug li 85%), cuam tshuam tsis zoo, magnesium rov qab tus nqi 5%-8% siab dua li cov ferrosilicon zoo tib yam, haum rau loj-scale magnesium ntau lawm.
Core Reduction Mechanism thiab Quantitative Effects
(1) Cov ntsiab lus tseem ceeb ntawm Pidgeon txheej txheem rau Magnesium Refining
Tshwj xeeb ferrosilicon yog siv los ua tus tseem ceeb txo tus neeg saib xyuas kom txo tau magnesium oxide raumagnesium hlauntawm qhov kub thiab txias. Cov txheej txheem tshuaj tiv thaiv yog raws li nram no:
Cov tshuaj tiv thaiv tseem ceeb:2MgO + Si → 2Mg (gaseous) + SiO₂ (spontaneous cov tshuaj tiv thaiv nyob rau hauv lub tshuab nqus tsev ntawm 1150-1250 degree);
Cov tshuaj tiv thaiv pab:CaO + SiO₂ → CaSiO₃ (cov calcium silicate generated tuaj yeem txo qhov melting point ntawm slag thiab txhawb kev sib cais);
(2) Kev txo qis ntau thiab qhov tseem ceeb cuam tshuam
Cov ntaub ntawv tseem ceeb:
Raws li cov qauv txheej txheem (Si=75%, impurities raws li cov qauv, loj 15-30mm), magnesium txo efficiency nce mus txog 85% -90%, magnesium rov qab tus nqi ntau dua los yog sib npaug rau 80%, thiab 1.2-1.4 tons ntawm tshwj xeeb ferrosilicon tau noj ib tuj ntawm magnesium;
Piv nrog cov ferrosilicon zoo tib yam: Vim nws cov impurities qis dua (Al Tsawg dua lossis sib npaug li 1.0% piv rau ferrosilicon Al Tsawg dua lossis sib npaug li 1.5%), tshwj xeeb ferrosilicon nce magnesium rov qab tus nqi los ntawm 5%-8% thiab txo cov nqi tsim khoom ib tuj ntawm magnesium . 300-500 RMB.
Cov yam tseem ceeb cuam tshuam:
Silicon Cov ntsiab lus: Thaum Si <72%, txo kev ua haujlwm txo qis los ntawm 10% -15%, thiab kev noj ferrosilicon ib tuj ntawm magnesium nce 0.2-0.3 tons; thaum Si> 78%, tus nqi nce tab sis txo kev ua haujlwm tsis zoo.
Kev cuam tshuam ntawm ntau dhau impurities:
Al> 1.0%: Al₂O₃ suav nrog yog tsim, ua rau kom muaj zog slag viscosity thiab 3% -5% txo cov magnesium rov qab;
S > 0.02%: MgS yog tsim nrog magnesium, txo cov purity ntawm magnesium cov khoom (Mg purity poob los ntawm 99.9% mus rau hauv qab 99.5%);
Ca > 2.0%: Cov tshuaj tiv thaiv ntau dhau nrog SiO₂ ua rau qis - melting - cov ntsiab lus cov khoom, ua rau lub tank txo thiab txo cov khoom siv lub neej ntev li 30%.
Core Quality Standards for Ferrosilicon rau Magnesium Production
(1) Composition Quality Standards
| Qhov Ntsuas Zoo | Qhov yuav tsum tau muaj | Core Impact |
| Silicon (Si) cov ntsiab lus | 72%-78% | Directly txiav txim siab txo efficiency thiab magnesium rov qab tus nqi |
| Aluminium (Al) cov ntsiab lus | Tsawg dua lossis sib npaug li 1.0% | Tsis txhob nce slag viscosity, kom ntseeg tau tias du |
| Calcium (Ca) cov ntsiab lus | Tsawg dua lossis sib npaug li 2.0% | Tswj slag muaj pes tsawg leeg, tiv thaiv lub nkoj txo |
| Sulfur (S) cov ntsiab lus | Tsawg dua lossis sib npaug li 0.02% | Zam kev tsim MgS, kom ntseeg tau tias magnesium purity |
| Phosphorus (P) cov ntsiab lus | Tsawg dua lossis sib npaug li 0.04% | Tiv thaiv magnesium cov khoom brittleness, txhim kho zoo |
| Titanium (Ti) cov ntsiab lus | Tsawg dua lossis sib npaug li 0.1% | Txo cov kev tawm tsam sab nraud, txo qis magnesium poob |
| Manganese (Mn) cov ntsiab lus | Tsawg dua lossis sib npaug li 0.3% | Tsis txhob cuam tshuam rau magnesium's mechanical zog |
(2) Cov qauv zoo ntawm lub cev
Loj Distribution:
10-50mm lumps (10-20mm 30%, 20-30mm 40%, 30-50mm 20%), Tsawg dua los yog sib npaug rau 10mm los yog ntau tshaj los yog sib npaug rau 50mm particles Tsawg dua los yog sib npaug rau 10%, kom ntseeg tau tias sib cuag nrog magnesium oxide hais;
Block Integrity:
Ib qho thaiv qhov hnyav 50-500g, tawg tus nqi tsawg dua lossis sib npaug li 5%, zam cov plua plav tsim thaum lub sijhawm thauj mus los thiab khaws cia (plua plav txo cov tshuaj tiv thaiv kev sib cuag thiab ua kom poob);
Cov dej noo:
Tsawg dua lossis sib npaug li 0.3%, tiv thaiv kev puas tsuaj ntawm qhov kub thiab txias los tsim H₂, ua rau porosity tsis xws luag hauv cov khoom magnesium.
Cov Ntsiab Cai Xaiv Cov Ntsiab Cai
Composition Priority:Ua ntej siab -purity ferrosilicon alloy nrog 74% -76% Si thiab Tsawg dua lossis sib npaug li 0.8% Al kom ntseeg tau tias txo qis thiab magnesium zoo;
Qhov Loj Matching:Xaiv 15-30mm rau cov txheej txheem Pidgeon thiab 10-20mm rau cov txheej txheem tas mus li kom tsis txhob muaj kev txo qis vim qhov loj me me tsis sib haum;
Tus nqi sib npaug:Tsis lees txais "qis-silicon, siab- impurity" fesi (txawm hais tias tus nqi yog 10%-15% qis dua, magnesium rov qab tus nqi txo los ntawm 5%-8%, ua rau cov nqi tag nrho ntau dua).
