Show murray plant of the american S R company the american smelting smelling Sm elting refining company in 1899 obtained control of the old germania and hanauer plants at murray the mingo plant at sandy and the ibex plant at leamington leavington Lea utah and immediately began preparation of plans for a larger and more modern for the economical treatment of lead silver ores that up to this time were either smelted smelter by small plants or shipped to the east or abroad the result was the murray plant location the plant is located in the salt lake valley about seven miles directly south of salt lake city at an altitude of feet and on the lines of the denver rio grande and the san pedro los angeles and salt lake railroads A fifteen minute electric car service over the state street line of the utah light railway company supplies convenient communication between the plant and salt lake city the ores ores are obtained from the camps of park city and alta to the east from bingham which lies directly across the valley iley to the west from tintic gintic stockton ophir and other utah districts a as s well 11 as from the states of california oregon washington idaho wyoming and colorado system all ores and fluxes are ree received dived at the plant in standard gauge cars and after beg ing weighed shed are delivered to the different haills s bins or stock piles as desired by the e same means and in general all tramm ng between tween the different departments is done one h in cars propelled by standard gauge witch engines sampling department the e mills are four in number three of aron 0 m ley tle n pamphlet issued by C W whited by permission manager 01 copyrighted reprint them provided with vezin samplers these mills crush and screen the ore fluxes and byproducts by products also cut out a representative portion of each lot as a sample mill no 1 is used for the crushing and sampling of crude sulphide ores and first matte from the blast furnaces materials are delivered by railroad cars and fed through a chute or by pan conveyor to no 4 gates gyratory crusher elevated reduced by two sets of rolls to pass 5 16 inch screen sampled and delivered either to cars or to belt conveyors leading to storage bins of roasting department two stage sample of 1 10 cut each is taken mill no 2 is utilized for the crushing and sampling of lead oxide ores which are to be smelted smelter direct the material is discharged from cars crushed to 2 inch elevated sampled and loaded into cars for switching to smelting smelling sm elting beds mill no 3 is mostly used for the handling of straight sili clous ores low in lead and serves the double purpose of sampling and screening out such amounts of fines as may be deemed necessary as a in roasting operations mill no 4 has a large lame capacity with heavy 24 inch by 36 inch parrel farrel crusher and is usually used for fluxes and by prod acts this mill may also be used for screening if desired roasting department the roasting department naturally is divided into two parts as follows first firs t pre jare boasters roasters including wedge and godfrey furnaces second F finishing ini shing ro asters consisting of dwight lloyd sintering wintering sint ering machines and hunington heberlein pots mixing and concentrate bins As noted above crushed sulphides sulp hides and first matte may bd W delivered by belt conveyors to a system of mixing bins of which there are fourteen with an aggregate capacity of 1310 tons these are made of old bruckner furnace cylinders and are 8 feet 8 inch diameter by 24 feet 6 inch high arranged in a double row and are equipped with a system of adjustable steel apron conveyor feeders for proportioning the charge to wedge or godfrey furnaces in the same steel building with the mixing bins are three rectangular concentrate bins each having a capacity of tons into which low lead sulphide concentrates or oxide fines are delivered from cars these bins have a 16 inch conveyer convey con venor pr underneath on to which materials are fed through a removable section of floor and a feeding hopper the charge for the wedge or godfrey furnaces is made up from these two sets of bins discharged by two cross conveyors on to no 5 inclined conveyor and brought to the top of the wedge building where wedge charge is delivered to no 6 conveyor and godfrey charge to bins wedge furnaces are housed in a steel building by 51 feet they are three in number with space provided for two additional furnaces these furnaces have seven fire brick hearths 21 foot diameter and in addition the top floor is used as a drying hearth shells are 22 feet 6 inch diameter by 22 foot 21 binch inch high and lined with 9 inch of common brick revolving steel center shaft to which removable rabble arms are attached is 5 feet in diameter open at top and bottom to allow free passage of air these furnaces are water cooled each rabble arm being supplied with a separate water pipe leading from an annular water box around top of center shaft through arm and discharging into a concrete sump at the bottom each furnace is provided flue which permits the with a multiple gas gases being discharged from any or all of the four top roasting hearths heart hs also with four 15 ton hoppers on scales which receive the charge weigh and deliver as required 00 00 locadi 0 0 k 0 0 sity 4 ra im sm L e mi 77 y 0 0 R i 4 0 0 00 00 EZO pa 0 0 0 0 0 blast furnace Q bedding system 0 murray plant 00 OO 0 0 0 birds eye 0 view of the murray 0 plant odo 00 00 00 0 0 0 0 0 0 00 01 hodoe 00 hodoe 0 0 0 ra jt j 0 0 0 I 1 ama 0 m kaoi 0 0 0 0 0 atop top view of interior of 0 wedge furnace M building 0 5 murray plant 00 0 0 0 0 0 0 section of blast furnace building showing one of the charge cars cam 0 murray U plant 0 aar 30 1010 0 0 aa 0 0 0 I 1 eel t 0 0 0 or eor 00 ft 0 a 0 0 1 A alii 0 floor 0 W 0 M ibi 00 00 ado OOL 0 0 0 0 0 huntington haberlien He berlien P process 0 murray Q plant 0 godfrey God freys at the right 0 0 0 0 0 0 bag house stack and section of flue system 0 murray plant 0 loo soesoe aruo LOMO 0 0 0 A 0 X 0 0 na k 0 n 0 arcao 00 A 0 41 AN iq 0 0 ama k Z anz 0 0 00 00 ao 00 oro 00 pa 0 0 0 0 0 0 section of 0 r mixing bins U dwight lloyd a 0 murray plant 00 oa 0 0 0 0 0 0 section action of 0 flue lue sy system stem 1 murray 0 plant 00 ioro 00 0 0 0 cv 0 ta 0 ot 0 0 Z OO 00 L a 00 fl ti 1 i 4 c 4 0 el r V 0 4 nam V 0 N 00 00 00 00 1010 0 pa 0 0 0 0 0 ll 11 dwight lloyd M machine machin U murray 0 plant 0 0 0 0 pa 0 0 blast furnace 0 u murray Q plant 0 odo ao 00 00 0 0 0 0 IS 0 0 all 0 0 00 aboor ZOO dryer hearth wedge ro asters are to the fire boxes for in provided ded with brick use start but no extraneous at the warming aming up fuel aftel is used in the regular roasting operations calcines are not discharged in a hot dusty condition as is customary but are first cooled and on an especially designed cast iron table and are ally thereby put in prime condition for handling as well as for further metallurgical processes product is then crammed by larry car to bins and delivered to railroad cars one furnace is usually used for pre roasting first matte and has a capacity of eighty five tons per day the 23 per cent sulphur in the matte being reduced to 12 per cent in the product the other two on a charge of crude sulphides sulp hides and concentrate with capacity of tons per day and sulphur reduced from 25 to 12 per cent godfrey furnaces of which there are five are coal fired and have a total capacity of eighty tons per day charge is crammed by mine cars and is discharged through a hopper to center of the single revolving brick hearth 20 feet in diameter resulting pre roast is water sprayed to proper degree of moisture and delivered to H H pots finishing ro asters charge for the finishing roasting furnaces except calcines from the godfrey furnaces is delivered in railroad cars to unloading pockets fed on to a 20 inch inclined conveyor carried to top of mixing building and deposited by an automatic tripper into a series of ten cylindrical mixing bins each having a capacity of cubic feet these bins arranged in a double row are housed in a steel building by 50 feet and are equipped with adjustable gates and variable speed conveyor feeders which afford facilities for combining the various ingredients of the charge as desired and which deliver material to a system of belt conveyors running to top of dwight lloyd building huntington and heberlein pots of which there are twenty three are located together with the five godfrey furnaces mentioned above in a steel building by 82 feet the H IL section of the bulldog is open and equipped with a 20 ton overhead travelling tra velling crane charge for H H pots is made up of about 1500 pounds hot godfrey primer 2000 pounds moist godfrey pre roast and 14 of direct ore mixture the two former are received from tho nearby near by godfrey furnaces furnace and the latter kiich consists of raw sulphide wedge sulphide pre roast Sili clous and iron ore fines 18 8 proportioned at the mixing bins men boned d above carried on a system of conveyors to a conical storage hopper in the if ac if building mixed and moistened on a revolving evolving plate delivered to an automatic eughing hopper and discharged to pot as required this charge is blown for about ten n hours at 12 ounce pressure carried by crane and dumped on breaking floor crushed to inch size and delivered to cars dwight lloyd plant two 42 inch by inch dwight lloyd lioyd sintering wintering sint ering machines housed in a steel building 56 by 59 feet which is designed especially for correcting bad working conditions of former installations are each equipped wit with a conical storage hopper of cubic feet capacity underneath the hopper is placed a flat cast iron mixing and moistening table seven feet in diameter running at about one and one half revolutions per minute and which with the assistance of a series of stationary and three adjustable rabbles babbles rab bles serves to mix intimately the different constituents of the charge and deliver same with the required amount of moisture to the spreading cone directly above the grates of the machine the D L charge may consist of either pre roasted matte and silica fines or wedge pre roasted sulphides sulp hides raw matte and iron ore fines proportioned as desired each machine is equipped with a separate exhaust fan driven by a fifty horsepower motor and maintaining a vacuum of approximately four ounces at the wind boxes A low grade of distillate of 28 degrees baume is used for igniting the charge sinter is dumped directly from the machines into dump bottom cars and switched to smelter storage piles smelting smelling Sm elting department at present writing all oxide ores going directly to the blast furnaces are bedded in flat bottomed bins all U D L sinter H H roast iron ore flux limestone briquettes and scrap iron are stored in stock piles or hopper bottomed pockets these different constituents of the furnace charge together with coke and slag shells are gathered in charge buggies wheeled to one of two central charge stations and dumped into fourton four ton charge cars each charge is hoisted to feed floor transferred to any desired furnace and dumped blast furnaces are eight in number 48 inch by inch 24 feet by 7 inch from to feed floor and operated with a 16 foot charge column each furnace is provided with ten 4 inch on a side with the usual lead charge a daily capacity of tons exclusive of coke and slag shells is obtained slag is tapped through a brick lined cast iron settler on wheels discharged into pots of 27 cubic feet capacity and hauled to dump by steam m locomotives matte is tapped from settlers into shallow pans of about one ton capacity and carried by an electric crane to loading station and shipped to sulphide mill this first matte containing 10 per cent of copper is crushed to 5 16 inch size pre roasted in wedge furnaces mixed with silica fines and sintered on D L machines when a 1 I sufficient tonnage of this matte silica sinter has been it is concentrated in one of the lead furnaces to a copper matte containing 45 per cent copper and shipped to a refinery Dr dressing plant the lead bullion is tapped into two wheel pots of 1200 pounds capacity wheeled to dr dressing plant and dumped into thirty five ton cast iron bullion kettles the plant is equipped with four of these coal fired kettles and three smaller kettles into which dross is skimmed and sweated the bullion is siphoned into cast iron moulds loaded into cars and shipped to a refinery flue system and blast furnace gases are drawn off through brick down takes into a hopper bottomed brick flue then through about 1270 feet of rectangular flat bottomed brick flue and discharged by means of a buffalo exhaust fan into one section of the bag house the entire gases of the roasting department after passing through individual connecting flues are brought together in the main roaster flue and conducted some 2800 feet to the bag house much of the coarse dust is settled out in the connecting flues which are provided with hopper bottoms and gates through which dust is obtained at regular intervals the main flue is rectangular with a flat bottom built of brick and is 22 by 16 feet throughout the greater part of the length at three different points in the course of the gases where the cross section of the flue is somewhat restricted and the velocity is in excess of 1000 feet per minute gases are neutralized the neutralized gases are then drawn through the bag house of which three sections are used for roaster gases and discharged by means of an exhaust fan into brick stack bag house is built of brick feet 6 inches by 90 feet 6 inches in four sections with 4 woolen bags see notes on bag filtration plants by A filers eilers transactions american institute mining engineers gi vol p briquette plant flue dust from the blast furnace and roaster flues as well as from the roaster gas section of the bag house is drawn off at more or less regular intervals sent to the briquette plant and treated either on a white mineral press or in a pug mill dust from the blast furnace section of the is sintered and shipped to the companas comp anys arsenic refinery power plant all power used at the murray plant is generated in the main power house which contains the following units one 18 inch by 38 inch by 42 inch tandem compound corliss engine direct connected to a no 10 connersville Conners ville blower two 20 inch and 40 inch by 68 inch by 68 inch by 48 inch cross compound dixon blowing engines two kv a electric A 0 generators volt direct coupled to 2 9 18 inch and 36 inch by 36 inell inch cross compound corliss engines one 50 kw D C exciter generator volt direct coupled to marine engine one 50 kw D C exciter generator volt direct coupled to 75 horsepower A C generator one 80 pound single stage air compressor one worthington jet condenser for accommodation of steam units mentioned above one worthington 12 inch and 17 inch by 11 inch by 15 inch duplex tandem compound steam driven outside packed double acting fire pump two worthington 10 inch by 6 inch by 10 inch duplex tandem outside packed double acting boiler feed pumps steam cylinders of pumps exhaust into feed water heater steam for the power plant and for heating purposes is furnished by seven H P marine boilers miscellaneous water supply water for boiler feed t and drinking burp purposes oses is obtained from from artesian wells raised to a gallon on storage tank by means of motor driven turbine pumps and distributed to the several departments by gravity lines water for cooling furnace jackets for fire protection and general purposes is pumped from a pond which is fed by springs into two gallon tanks and distributed about the works as required hot water from the jackets and condensers is returned by gravity to the pond laboratory office and shops A well equipped laboratory in a brick building is maintained for all |