Show V V V BAG DAG HOUSE H USE V Workings mIgs of or nt itt ill im 1 ii no noi lUll llon i l V Tho The bag bug house In service at ut tho tim Unit United Uni United ed ed States load lead smelter Is I not materially different from fron the tM one ono being operated at nl the Murray plant of of tho time American l Smelting SI Refining Mining company compan Time Tha operation Is time the tle same Caine expect that through the tho of zinc ax oxide Ide Into Inta the tho fumes ns nA n it neutralizing agent It Is possible to Introduce Into the bag ba without Injury to tho the bags for filtration tim gasses pisses from both bt the roasters and lead stacks rho Tho object of o tho time bag hag house Is to Iii fil filter f ter tel the gasses from the furnaces urn aces through fabric so K as to catch the solid matter nute or ore or hust hunt which Is the damaging ole ele element ment mont und and n thus tho the gases mire are this dis discharged charged into the ho atmosphere do so o that they tho do not cause causo damage to crops or UI animals The gasses coming corning from the tire furnaces are received by b a I large Jle steel fan Ian tiny driven en Cli hy imy hYI a horse power motor and auL this thU fan Imparts to the gasses tIme the th pros pres pressure sure aur necessary to force same samo through time the filtering cloth After leaving the tho thoIn fan In tie Jill gases pass through a it long bee beehive beehive hive hl shaped flue duo on the side sido of which are aro 15 11 steel pipes about three and amId a halt half feet In ill diameter leading to the tho bog bag ba house hous collars cellars Each Kauh pipe contains a I that the How flow ow of oC gas 11 Into any cellar may b J regulated regula led of ot cut oft oc entirely en trel Tho consists of a sub substantial fuh building with steel frame framo and nn brick brlek walls About Abut 16 feet teet above tho time floor fool level a 1 steel floor extends across the tile whole wl le building TIlts This Is perforated with wih holes 18 Inches In II which are placed as ns closely together as ns pos possible sible sibie A steel nipple extends up through each hole rime Tha o bags bugs are arC 18 38 Inches In diameter and 32 feet cot long iong longle The le end Iud of the bag Is drawn drawn over the nipple and Ind a clamp Is then put on to hold It In place The Tho top lop of a this the bag bagIs Is fastened to the tho th roof rot structure by a 1 alope lope rope Altogether there are aro 2076 bags unit and the lie total filtering surface of mill all ni these bags to square feet el or 01 73 13 acres When the time gas enters tho the bag bahou house e from tram time tho beehive Hue Through the tho steel cel pipes It I finds no rio 10 path for exit except upwards through tho the bags ba s As Js tho th gas gaR passos through the time bags which w are aro made mado of muslin ni all the tho solid told particles panicles are aru caught by the time meshes of ot the cloth and after a while there Is quite a it coat cont coatIng contIng Ing of ot dust dut on oat 0 tho time Inside of or tile the bag Then Ihen the tho gas gus Is cut off or from rom one divi division divisIon sion and tile tho bags are shaken so that this timis dust falls ala down onto the tle floor 1001 of the bughouse It I hero here accumulates until It I Is two or foot feet thick and andIs Is then thol taken out in to tram trum rein cars Tho rho filtered gases cases after ater passing through the bags 1111 a mi steel flue fue at atthe time the top of ot the tho through which they pass Iss down toWn to tho ho the tho stack and amId then pass up UI lP the tho main load lead plant stack and ate are discharged Into the tite at nt atmosphere at a height of ot 75 feet teet above time tho ground So perfect Is the tho Ul filtration tion ton of o solid sold mutter matter that many people have thought tho the smelter smeller shut down recently because they saw no smoke coming from tho the stack The Time was completed about Juno 1 at a 1 cost of and Ild has bal been In iii constant and successful tul opera operation oper operation tion ton ever since Occasionally a ii 0 bag and und has K to lo bo be replaced but tho the number of failures Is very small OH its 1 Is Indicated by time the fact act that up until the tho end on of ot November thorn thor wore were ro re replaced placed only 21 23 2 bugs bags out ut of a ml total of ot 2070 In imm service |