Li ni u L mt sinh vin, c bit l sinh vin ngnh k thut. Vic thc hnh thc t l cc k quan trng i vi vic pht trin kin thc v k nng c nhn ca sinh vin. Nhn thc c nhng iu trn, em v cc bn sinh vin t ng ha rt ho hng v c nhng ngy thc tp tt nghip trc khi ra trng kh b ch. Chuyn thc tp tt nghip n nh my xi mng Hong Thch ti x Minh Tn-huyn Kinh Mn-Hi Dng di 22 ngy cho chng em nhng tri nghim thc t v mt nh my cng nghip ha vi nhng h thng t ng ha hon ton, cng vi nhng gi hot ng nghin cu ti mt nh my nh mt k s thc th. y cng l khong thi gian chng em thc s suy ngh v chuyn ngnh ca mnh v nhng nh hng ngh nghip trong tng lai gn sau khi ra trng.Bi bo co thc tp ny ca em gm c 4 chng: Chng I: S lc v cng ty xi mng Hong ThchChng II: Tng quan cng ngh sn xut xi mngChng III: L nung ClinkerChng IV: H thng cn Rotor WeighFeeder Bi bo co ny ni mt cch khi qut v c bn nht v t ng ha nh my xi mng v cu to h thng cn Rotor cp than t ng, c s dng mt s ti liu trn mng v ti liu t nh my xi mng. Em xin chn thnh cm n Vin in to iu kin thun li cho nhm em i thc tp chuyn ny! H Ni, ngy 22 thng 08 nm 2014 Sinh vin Chng I: S lc v cng ty Xi mng Hong Thch

1.1 V tr a l v qu trnh hnh thnh pht trin ca cng ty1.1.1 V tr a l Nh my gm 2 khu chnh:- Khu sn xut: Pha hu ngn sng Bch trn khu i thuc thn Hong Thch, X Minh tn, Huyn Kinh Mn, Tnh Hi Dng vi din tch 24ha c ngun nguyn liu vi v st di do. Vi tr lng trn 150 triu tn vi, cht lng tt, t tp cht, hm lng CACO3 > 92%, MgO3 < 3% cng vi trn 50 triu tn st l nguyn liu chnh sn xut xi mng khong 100 nm cho mi dy chuyn. Ngoi ra cn gm tt c cc xng sn xut chnh t khu p vi, st, gia cng ch bin cc nguyn liu, nung v nghin xi mng. - Khu thnh phm: Phi t ngn sng Bch, thuc vng t ca thn Vnh Tuy, X Vnh Kh, Huyn ng Triu, Tnh Qung Ninh, vi din tch 12.5ha, gm 5 xil cha xi mng, h thng my ng bao xi mng, h thng bng ti, mng xut xi mng theo cc tuyn: ng t, ng thy, ng st. Hai khu vc trn c ni lin bng mt cy cu di 388.15m qua sng Bch.1.1.2 Qu trnh pht trin nh my Sau khi chin tranh kt thc, nn kinh t nc ta ang bc hi phc, trc tnh hnh ng v Nh nc hoch nh chin lc pht trin kinh t x hi, trong xy dng c s vt cht k thut ca nn kinh t c coi trng hng u. e lm c vic , ngnh cng nghip vt liu xy dng phi i trc mt bc. Ngy 15/11/1976, Th tng Chnh ph ra ch th s 448/TTg v vic "Xy dng Nh my xi mng Hong Thch".- Ngy 15/12/1976, ng ch Mi lc l Ph Th tng Chnh ph k Quyt nh s 474/TTg Ph chun nhim v thit k Nh my xi mng Hong Thch (cho php xy dng nh my xi mng), vi tn gi "Nh my xi mng Hong Thch". a dim xy dng ti thn Hong Thch x Minh Tn, huyn Kim Mn, tnh Hi Hng (Minh Tn - Kinh Mn - Hi Dng ngy nay) v thn Vnh Tuy x Vnh Kh, huyn ng Triu, tnh Qung Ninh, s vn u t ban u e xy dng l 73.683.000 USD. Nh my do hng F.L.Smidth (an Mch) thit k, cung cp thit b ton b v cho chuyn gia gip xy dng, vn hnh nh my. Ngy 19/05/1977, Khi cng xy dng dy chuyn I Nh my xi mng Hong Thch vi cng sut thit k 1,1 triu tn/nm, y l dy chuyn ln v hin i nht Vit Nam vo thi dim . Ngy 04/03/1980, B Xy dng k Quyt nh s 333/BXD-TCCB v vic thnh lp Nh my xi mng Hong Thch. Ngy 25/11/1983, Nh my sn xut c m Clinker u tin.Ngy 16/01/1984, bao xi mng mang nhn hiu Hong Thch u tin c ra i nh du thi k mi, thi k sn xut xi mng theo ch tiu php lnh ca Nh Nc. p ng yu cu pht trin ph hp vi nn kinh t th trng, ngy 12/8/1993, B xy dng ra quyt nh s 363/Q-BXD thnh lp Cng ty xi mng Hong Thch trn c s hp nht Nh my xi mng Hong Thch vi Cng ty kinh doanh s 3. ng ch Nguyn Vn Hnh c b nhim lm gim c cng ty. Cng vi s pht trin nhanh chng ca nn kinh t t nc, nhu cu xi mng cho xy dng ngy mt tng, cng ty u t m rng, khn trng tin hnh xy dng dy chuyn II c cng sut thit k l 1.2 triu tn/nm, trn mt bng ca cng ty hin c, dy chuyn II c khi cng ngy 28/12/1993. Sau gn 3 nm thi cng xy dng, ngy 12/5/1996 dy chuyn II c khnh thnh v i vo sn xut, nh vy tng cng sut ca 2 dy chuyn lc ny l 2.3 triu tn/nm. Vi s quan tm ca chnh quyn, Cng ty xi mng Hong Thch khng ngng ln mnh v pht trin sn phm ca Cng ty nm sau cao hn nm trc, cht lng sn phm lun n nh mc cao. Trc tnh hnh tng trng kinh t giai on (2006-2010), d n u t xy dng dy chuyn III Cng ty xi mng Hong Thch c cng sut thit k l 1.2 triu tn/nm, c th tng chnh ph cho php u t ti quyt nh s 91/Q-TTg ngy 20/01/2003. Dy chuyn III c khi cng xy dng ngy 04/02/2007 trn mt bng hin c ca cng ty vi din tch t s dng l 7.46ha, n qu III nm 2009 khnh thnh i vo sn xut. Nh vy khi dy chuyn Hong Thch III i vo sn xut a tng cng sut ca Cng ty ln 3.5 triu tn/nm.

Chng II: Tng quan cng ngh sn xut xi mng2.1 Cc cng on sn xut xi mngDi y l s dy chuyn cng ngh sn xut xi mng Pooclng v xi mng Pooclng hn hp ti Cng ty xi mng Hong Thch:

Hnh 1.1: S dy chuyn cng ngh nh my Hong Thch

2.1.1 Khai thc v vn chuyn vi vi c khai thc theo phng php ct tng bng n mn sau dng xe i hng ln Komatsu i xung chn ni , di chn ni my xc Komatsu cng sut ln xc c kch thc