Dab tsi tshwj xeeb cuam tshuam qhov loj ntawm silicon hlau hmoov muaj nyob rau hauv nws daim ntawv thov?

Qhov loj ntawmsilicon hlau hmoovntsuas hauv "mesh" (Taylor standard sieve) lossis "micrometers (μm)". Tus lej mesh ntau dua qhia tias qhov me me me me thiab muaj zog reactivity.

(1) Kev Lag Luam Metallurgical: Txiav txim siab qhov ua tau zoo ntawm kev sib cais thiab kev sib xyaw ua ke

Silicon hlau hmoov yog tsuas yog siv rau deoxidation thiab alloying hauv metallurgy. Qhov loj me cuam tshuam ncaj qha rau cov tshuaj tiv thaiv tus nqi, cov nqi rov qab, thiab qhov kawg - cov khoom lag luam, thiab yog qhov tseem ceeb ntawm kev tswj xyuas cov hlau thiab aluminium alloy ntau lawm:

 Steelmaking Deoxidation thiab Alloying:

Coarse particle loj (20-80 mesh, 180-74μm):Lub sij hawm tawg 15-20 feeb, silicon rov qab tus nqi 65% -75%, yooj yim accumulates hauv zos hauv molten hlau, ua rau muaj qhov sib txawv ntawm ± 0.1%, tsuas yog tsim rau cov pa roj carbon zoo tib yam;

Fine particle loj (200-300 mesh, 38-10μm):Lub sij hawm tawg 3-5 feeb, silicon rov qab tus nqi 85%-90%, tsis zoo dispersion, oxygen cov ntsiab lus nyob rau hauv molten steel txo los ntawm 80-100ppm rau ... 30-50ppm, haum rau zus tau tej cov high-strength alloy steel thiab hluav taws xobsilicon hlau; Core mechanism:Fine-cov hmoov hlau nplaum silicon hmoov muaj thaj chaw loj tshwj xeeb, tso cai rau kev sib cuag nrog cov hlau molten ntau dua, cov tshuaj tiv thaiv sai dua, thiab zam kev tsim cov kev sib koom ua ke los ntawm ntau qhov chaw hauv cheeb tsam, ua tau raws li qhov xav tau ntawm purity siab -kawg steel.

 Casting Alloy Production:

Coarse Loj (50-100 mesh, 300-74μm):Melting lub sij hawm ncua mus rau 10-15 feeb, yooj yim tawm hauv undissolved hais, casting porosity defect tus nqi nce ntawm 0.5% mus rau 2.3%;
Loj Loj (200-400 mesh, 38-10μm):Ua tiav melting nyob rau hauv 3-5 feeb, alloy kua fluidity txhim kho los ntawm 20% -30%, precision casting nto tiav Ra ​​Tsawg dua los yog sib npaug rau 0.8μm, dhau tus nqi txhim kho los ntawm 10% -15%;

(2) Kev lag luam tshuaj: cuam tshuam cov tshuaj tiv thaiv thiab cov khoom purity

Nyob rau hauv cov tshuaj lom neeg, silicon hlau hmoov yog tsuas yog siv rau organosilicon synthesis, silane coupling tus neeg sawv cev ntau lawm, thiab lwm yam Particle loj yog lub hauv paus ntawm cov tshuaj tiv thaiv efficiency, cov khoom purity thiab tus nqi tswj, yoog raws li cov kev xav tau ntawm lub ntiaj teb no tshuaj tuam txhab uas muag:

 Organosilicon Synthesis:

Coarse Loj (80-100 mesh, 180-74μm):Cov tshuaj tiv thaiv me me, kev hloov pauv ntawm silicon tsuas yog 70% -75%, cov tshuaj tiv thaiv lub sijhawm 12-15 teev, methylchlorosilane monomer purity 98.5%;

Qhov loj me (300-400 mesh, 50-10μm):Cov cheeb tsam tshwj xeeb ncav cuag 5-8m² / g, silicon hloov pauv tus nqi nce mus rau 85% -90%, cov tshuaj tiv thaiv lub voj voog luv rau 8-10 teev, monomer purity Ntau dua lossis sib npaug li 99.5%, tom qab silicone roj hmab tensile lub zog nce los ntawm 15%, elongation ntawm tawg nce 20%;

Qhov tseem ceeb logic:Cov hmoov zoo muaj ntau qhov chaw ua haujlwm, ua rau muaj kev ua tiav ntau dua nrog cov tshuaj methyl chloride, txo los ntawm - cov khoom tsim, txo cov nqi purification tom qab, thiab ua tau raws li cov qauv thoob ntiaj teb ib puag ncig rau cov khoom siv tshuaj.

(3) Kev Lag Luam Cov Khoom Siv Hluav Taws Xob: Kev txiav txim siab ntawm cov khoom ntom ntom thiab kev pabcuam lub neej

Raws li ib qho ntxiv hauv cov ntaub ntawv refractory, qhov loj ntawm silicon hlau hmoov cuam tshuam rau qhov ntom, lub zog, thiab siab - kub stability ntawm cov khoom. Nws yog dav siv nyob rau hauv siab - cov cuab yeej kub xws li steelmaking furnace linings thiab industrial kilns.

 Refractory Cib / Casting Ntau Lawm:

Coarse Loj (40-80 mesh, 450-180μm):Cov khoom tsis zoo, cov khoom siv porosity Ntau dua lossis sib npaug li 15%, siab -kub (1500 degree) compressive zog Tsawg dua lossis sib npaug ntawm 80MPa, kev pabcuam lub neej tsuas yog 6-12 lub hlis;
Loj Loj (200-300 mesh, 38-10μm):Muaj peev xwm sau qhov sib txawv ntawm cov ntxhib sib xyaw ua ke, tsim cov qauv ntom ntom, txo cov khoom porosity mus rau 8% -10%, siab kub compressive zog Ntau dua los yog sib npaug rau 120MPa, thermal shock stability (1100℃dej txias voj voog) txhim kho los ntawm 50%, steelmaking furnace lining kev pab cuam lub neej-24 lub hlis;

Optimization Scheme:Txais qhov "coarse + fine" gradation (coarse particles 60% + fine particles) (40%), uas tuaj yeem txo qhov porosity mus rau 5% -8%, thiab txhim kho siab - kub ua haujlwm los ntawm 20% -25%, ua tau raws li kev lag luam steel thoob ntiaj teb kev thov rau cov khoom siv refractory siab.

(4) Lwm cov teb: Cov kev xav tau sib txawv rau kev hloov pauv loj

 Hmoov metallurgy:

Ntxiv 5% -10% ntawm cov khoom ultrafine (ntau tshaj 500 mesh,<5μm) can improve product density (≥95%) and wear resistance (wear reduction of 40%), suitable for mechanical wear-resistant parts and cutting tool exports;

 Cov khoom siv hluav taws xob:

Tom qab purification, ultrafine hais (ntau tshaj 800 mesh,<2μm) can be used in semiconductor auxiliary materials and photovoltaic polycrystalline silicon production, requiring impurity content ≤0.01% and particle size uniformity deviation ≤±1μm, conforming to international electronic industry standards;

 Cov khoom siv vuam:

Nruab nrab - loj (100-200 mesh, 74-38μm) silicon hlau hmoov, ua raw khoom rau vuam electrode coatings, ntxiv 20%-30%, tuaj yeem txhim kho cov nyhuv deoxidation ntawm welds, nce weld tensile zog ntau dua los yog sib npaug rau 400MPa, thiab txhim kho kev siv lub ntiaj teb corrosion tsim los ntawm 3%.

(1) Peb Txoj Cai Xaiv

Txheej txheem Adaptability:

Qhov loj me yog xaiv rau siab - kub ceev melting (xws li nruab nrab- zaus furnaces thiab converters) los xyuas kom meej sai sai; nruab nrab- ntxhib loj yog xaiv rau qis- cov txheej txheem kub qeeb (xws li cov khoom siv hluav taws xob zoo tib yam thiab cov tshuaj batch tshuaj) kom sib npaug ntawm kev ua haujlwm thiab tus nqi;

Kev xav tau kev ua haujlwm:

Fine/ultra- qhov loj me yog xaiv rau siab- cov khoom kawg (precision castings, siab- cov tshuaj purity, cov khoom siv hluav taws xob) kom ntseeg tau tias kev ua haujlwm ruaj khov; ntxhib / ntxhib loj yog xaiv rau cov khoom zoo tib yam los tswj cov nqi tsim khoom;

Kev Ua Haujlwm Zoo:

Fine/ultra-cov hmoov zoo yog qhov ua rau muaj plua plav thiab agglomeration, yuav tsum tau ntim cov khoom noj thiab cov dej noo- pov thawj qhov chaw cia khoom (humidity tsawg dua lossis sib npaug li 60%). Cov dej noo- cov ntaub ntawv pov thawj (xws li lub tshuab nqus tsev ntim + desiccant) yog xav tau rau kev thauj mus los thoob ntiaj teb kom tsis txhob muaj oxidation thiab agglomeration cuam tshuam rau kev ua haujlwm.

(2) Xaiv Qhov Sib Piv Rooj Sib Tham los ntawm Scenario