Document BRpGGz8VBa3p6p4XaG72K7N74

FILE NAME: Concrete (CONC) DATE: 1941 Oct DOC#: CON CO14 DOCUMENT DESCRIPTION: Journal Article - Permanente is Now World1 Largest Cement Plant WI 'e or mrlda 'nseLn at ergIesst Cement Plant Tw o new kilns b rin ^ ra p arity oi p la n t n p to H i.0 0 0 b b i. p e r tla> ' Jihin a veiy tew weeks The Peimanente Corpoi ation'.s ce ment plant neat Sunnyvale Califoinia will be the largest cement plant in the w011(1 About two yeais ago consti notion work started on this plant and this construction work has nevpi stopped First it was a twokiln plant using the largest kilns callable Befoie these weie hardly biokpn m a thud kiln was installed and now a fourth kiln is turning out o m e iu while one of the first kilns met ailed is down for repairs As soon a' installation of the new grinding units is completed all four kilns will be m use V War Imliisii-s Not only p rlie cement plant be ing enhuged at a speed that bleaks all nsnrds but a small army ol constmctioii men is building a Magne sium Plant adjacent to the cement plain The const) tictors at the ce ment plant aie proud of then accom plishments a new F L Smidth & Co kiln 11- x 464-ft . with ends en larged to 12-ft was installed in 24 ria\s iioni the date machinery ar m e d Tnat is no small accomplishim n! when one consideis that three to six months is the usual time for e i e i 'inv s (rh ri huge unit New AlhsC h a l m e i s ball nulls 9 ' j - x iO-ft now F I Smidth &. Co finish nulls 9 1.- \ 10-lt primary and 8- x 36-ft sei uncial \ Don Classifies with and without bowls CoTrell Pi ecipi tat oi s Wilfley minips-- these and manv other hems aie all being installed as one tmi; and with speed compaiable to that of the kiln installation When this plan; s mmpletecl as now planned then ", 11 be 17 minding units, all of the largest sire obtain able. and the plant will have a ca pacity of at least 16 000 bbl of ce ment pel day making it the largest cement plant in the world. Cement for the Central Valley aiea the Sha.sta and Fuant dams MadeiaBakersfield and Conti a Costa canals, has been classified ns a defense neces sity mainly because of the powei to be generated The jnoxirmty of the metallic magnesium plant is anothci teason foi placing the cement plant on a war basis When vou appioach the new lame and artistically designed office you are politely intercepted by an armed guard who asks the general nature of vour business. He dnects you to the proper official Possibly from that of ficial a prelinnnaiy pass can be ob tained to the plant The next step lto be photographed and some vital personal statistics lecouieci befoie the final permit to the plant is ob tained Armed and uniformed guaids aie at all gates and otheis patrol the very large area taken up by the com bined operations Each dav one must check into the plant and check out as well. Cameras aie strictly forbid den in the plant and anv photographs must come Horn the company's own staff photogiaphei Knlhusia.slir O rgaiii/nliiin Manv changes halt taken place within the plant since R ock P roducts published a di-sc l lptior, December. 1940 issue and the protect is so laige with dav to da' i hanges being made that even the operating staff itself has a haul unit keeping up with what is gome on Surveyors dot the yard, and it is with difficulty that you can find a place 'n park youi cai . and the chances aie that when vou return to it vom <ai will have been moved and a oat or "bull dozer ' oi a crew of men will be working on the foundation piers fo; something or other It m very remaikable. this spun of the men. their desne to get the 10b done This drive behind the organization Halts fiom the top wtin their presi dent,. Hemy J Kaisei The men at the plant sav that the cuticle recently published m the So! in clap Evemna Post was onlv halt o! it They tell of his ship-building piuject alreadv launching ships befoie the ship yaici was completed The-, fust started const i notion of that yard with pile - Nlinvrl t o c iilim lc c ' I ' l l i C K i c N ' ' p u t l r t i 1>\ n a i l t . r l<r 1 r n i. - e * ' r I mn r i a l s Iro n hi* i| >nrr' KIM K S>ROl H S L o o k i n g d o w n :t flu* P c r n i i i n c n l e ( o r i H > r : i t i o n p l a n t :> it a p p e a r s t o d a > v it h f o u r k i l t ) h a v i n g : a c a p a c i t y o f Hf.OOO h h l. a #la> dm er crews As soon as the ways twheerecsotanrstterudctkioenelsowf etrheelaisdhifposr skheieppss; pyaacrde wanitdh atchceordcionngsttroucotuiornmfoofrmthae- dWamak,e ItsolanFdr.iaPnetarldHamar.botro, aPndanoatmhear. Pacific island bases. Bulk cement is hCaituyl,edmfrsopmeciPaellrymbanueilnt tetrutockRsedawndooids f b u r n Trill tik a m i crev* p r e p a r i n g f o r n " hoi** lion, a ship was launched long be fore the yard was completed. The same kind of ingenuity seems to per vade the whole organization beJufisntiswhheden, nthoe ocneemceonut ldplasnaty wPouolsd sibly it will be before this is m print, but some expect before the new unit is completed another enlargement Program may be under way. for the cement is going out as last as pro duced. and the clinker storage facili ties are empty. All salesmen have been taken oft the road and put at omtehnetr fwoorrkth; eanCdenftorralsoVmaleleoyf Pthroejeccet, and for other major customers, the mcoamrkpeatny has had to go on the open The cem ent is going to the Shasta then loaded into ocean going ships such as the Matson Navigation Com pany's S/S " W a im e a ". for the ocean trade. (Before the Japanese crisis. Japanese boats also hauled cement m Pcaarcsifilcoawdeadterws.)ithSobmulek 3c0emtoent60lebaovxe the plant each day for the Shasta dam alone. O perating Technique ceTmheent spreeqcuifiirceatiaonlsowforhetahte cSemhaesntta, and with the alkali content below 0.6 percent. To meet these specifications requires strict laboratory control. Fortunately, the deposit is favorably constituted for this grade of cement aisndneendoedselective mining or quarrying Many oi the new units installed were to increase capacity; others to improve the over-all efficiency such DasortrheFXinsctlaalslsaitfiioenr mof tahe1s2e-cftondwaidrye grinding circuit. Here it was found tthheat ceifmtehnet crolacyk, wbeerteterremseotvtleindgfrwoams experienced m the Dorr thickeners rTiah]e fmroimnusth3e,'1s6c-riene.nionrg 'pi-lamn.t, mopaeter ated as a part of the secondary crushing plant, is sent to this classi fier. The sand (coarse) portion is returned to the cement rock storage conveyor by a short belt. The over --floawne(wfinlyesi)nsgtaolelsedto12N5-oft 3Dtohricr kternaecr twioitnh ttyhpeeclaTyh.eSoumndeercfallocwiumis cgarrobuonnd aenteouisghthutos pmuat ttinerto athegrcelaaty,dbeualt. nAott itsimuessedatonedwe clyre ainses tathllee dw aOtleirvecro nfitletne rt of the underflow from the thickener. This is a rather novel deviation from standard practice, and the net result of its installation will be watched with interest. Another installation that is pos sibly new to the cement industry will bweillthoepuersaeteof ina Bciorndjucnecnttiroinfugwe itthhaat PTeranynlsoyrlvbaanlila mhilal mfomr etrhemgilrlindainndg oaf cthlaey.toTthale rcalway m(aixb)ouwt i1ll2 fpiresrtcegnot otof tChEe38P.esnenrsiayllv1a2n7i5a), roepveerrastiebdle bmyilal '1s2iz5ehp A uto-Start ball-bearing, U S. motor. The hamm er mill will serve a 9'-2- x 10-ft. Traylor ball mill m closed circuit with a Dorr classifier (12-ft. wide FX). The classifier over flow wall go to a constant head tank OCTOBER. 1941 :i7