hợp kim của fe
TRANSCRIPT
- 1. KIM TRA BI C Cu hi : T Fe2O3; Fe3O4; FeO v CO iu kin cn thit c , hy vit cc phng trnh ho hc to ra kim loi Fe. ( ghi r iu kin phn ng, nu c) Fe2O3 + 3CO 2Fe + 3CO2 o t Fe3 O4 + 4CO 3Fe + 4CO2 FeO + CO Fe + CO2 o t o t
- 2. Phan Th Vn _ k37.201.128 4
- 3. BI 33: HP KIM CA ST PHAN TH VN _ K37.201.128 5
- 4. HP KIM ST : GANG, THP HP KIM CA ST SN XUT GANG, THP GANG L G ? THP L G ? SN XUT GANG NH TH NO ? SN XUT THP NH TH NO ?
- 5. I - Gang 1 Khi nim 2 Phn loi 3 Sn xut II - Thp 1 Khi nim 2 Phn loi 3 Sn xut HP KIM CA ST Cacbon St Silic Mangan Photpho Lu hunh 1-Khi nim: Gang l hp kim ca st vi cacbon trong c t 2 5% khi lng cacbon ngoi ra cn mt lng nh cc nguyn t Si, Mn, S,
- 6. HP KIM CA STI - Gang 1 Khi nim 2 Phn loi 3 Sn xut II - Thp 1 Khi nim 2 Phn loi 3 Sn xut 2. Phn loi : Gang cha cacbon dng than ch. C 2 loi gang Gang xm: Gang trng: Cha t cacbon hn v cacbon ch yu dng xementit ( Fe3C)
- 7. I - Gang 1 Khi nim 2 Phn loi 3 Sn xut II - Thp 1 Khi nim 2 Phn loi 3 Sn xut 3. Sn xut: Hon thnh phiu hc tp M phng l cao HP KIM CA ST
- 8. Phan Th Vn _ k37.201.128 HP KIM CA ST Phan Th Vn _ k37.201.128 Cacbon St Silic Mangan Photpho Lu hunh I - Gang 1 Khi nim 2 Phn loi 3 Sn xut II - Thp 1 Khi nim 2 Phn loi 3 Sn xut 1-Khi nim: Thp l hp kim ca st vi cacbon (chim di 2% v khi lng) cng vi 1 s nguyn t khc (Si, Mn, Cr, Ni)
- 9. Cacbon St Silic Mangan Photpho Lu hunh Thnh phn ca thp Cacbon St Silic Mangan Photpho Lu hunh Thnh phn ca gang (?) Cho bit im ging v khc nhau gia gang v thp Ging nhau Khc nhau HP KIM CA ST
- 10. I - Gang 1 Khi nim 2 Phn loi 3 Sn xut II - Thp 1 Khi nim 2 Phn loi 3 Sn xut 2-Phn loi : Thp thng Thp c bit Thp mm Thp cng Cha khng qu 0,1% C. Cha trn 0,9% C. Cha thm mt s nguyn t c bit nh Mn, Cr, Ni HP KIM CA ST
- 11. I - Gang 1 Khi nim 2 Phn loi 3 Sn xut II - Thp 1 Khi nim 2 Phn loi 3 Sn xut 3. Sn xut thp: b) Nguyn liu sn xut thp: a) Nguyn liu sn xut thp: c) Phng php sn xut Phng php bet-xo-me Phng php Mac-tanh Phng php l in Gim hm lng cc tp cht C, S, Si, Mn c trong gang bng cch oxi ha cc tp cht thnh x v tch ra khi thp + Gang, st ph liu, oxi HP KIM CA ST
- 12. 14 HP KIM CA ST
- 13. HP KIM CA ST
- 14. 16 1 2 3 || HP KIM CA ST
- 15. CU HI 1: Gang l g? P N: Gang l hp kim ca st vi cacbon trong c t 2 5% khi lng cacbon ngoi ra cn mt lng nh cc nguyn t Si, Mn, S, HP KIM CA ST
- 16. HP KIM CA ST CU HI 2: Thp l g? Cc phng php sn xut thp. P N: Thp l hp kim ca st vi cacbon (chim di 2% khi lng) cng vi mt s nguyn t khc (Si, Mn, Cr, Ni) Cc phng php sn xut thp: PP Bet-xo-me PP Mac-tanh PP l in
- 17. HP KIM CA ST CU HI 3: Sn xut gang, thp c gy nhim Mi trng khng? Ti sao?.
- 18. PHIU HC TP NHM: Hy quan theo di M PHNG miu t v qu trnh luyn gang, hon thin cc ni dung sau: 1. Nguyn tc sn xut gang: 2. Qu trnh sn xut gang gm .. giai on: 2.1. Nguyn liu: 2.2. Luyn gang trong l cao: Cc phn ng ha hc xy ra *Phn ng to CO: . * Kh CO kh oxit st to cao: . *St nng chy ha tan . v mt s nguyn t khc to thnh .. 2.3. Cho gang ra l. ( X lng nh ni ln trn c tho ra ngoi qua.., lm ngui . ) HP KIM CA ST
- 19. 2Fe2O3 + CO 2Fe3O4+ CO2 Fe3O4 + CO 3FeO + CO2 FeO + CO Fe +CO2 CaCO3 CaO + CO2 CaO + SiO2 CaSiO3 C+ CO2 2CO C + O2 CO2 MING L THN L BNG L NI L Thi khng kh lm giu oxi V sy nng ti 900oC CO CO CO GANG X 200OC 400OC 500OC-600OC 700OC-800OC 1000OC 1300OC 1500OC 1800OC QUNG ST FexOy KH L CAO: CO, CO2, H2,
- 20. O2 X nng chy Thp nng chy S hot ng ca l bet-x- me ( L luyn thp) 2Fe + O2 2FeOo t FeO + C Fe + CO 2FeO + Si 2Fe + SiO2 FeO + Mn Fe + MnO o t o t o t HP KIM CA ST