Show THE SUMPTER SMELTER the new plant at sumpter oregon built by the oregon smelting smelling Sm elting refining company was blown in on tuesday september ath the occasion being accompanied by ceremonies befitting the launch ing of this important enterprise the following description of this fine plant and its equipment is taken from the sumpter american which says jacket spreads to inches at the chag ing floor it has weight eight on a side and is fitted for both hot and cold blasts the bustle pipe is lined with a fire resisting asbestos mixture for withstanding the hot blast when it is in service and the blast pipe from the hot blast stove to the bustle stove is similarly lined the first one of these goes through the hot blast stove and the other passes around the stove so that as necessity may require either a hot or cold bl blast I 1 ast may be used the hot blast stove proper consists con fists of eight rows of pipes with six pipes in each row the pipes are like an inverted TJ and the air has to pass through the six inverted Us before it reaches beaches the blower pipe from the hot blast stove thence it is conducted to the furnace through the lined blast pipe the hot blast stove is feet and will heat the air to a temperature of from to degrees fahrenheit on the inside of the furnace building is situated an elevator which raises the fouls fouli slag from the tapping floor to the charging floor and also raises the flue dust from its cost was between and it Is modern modem in every respect substantial throughout and built with a view of offer er manent operation its furnace and machinery are of the very latest type and it is so constructed that one or more furnaces can easily be added thus assuring the treatment at home of immense quantities of ore and concentrates the dimension of the several buildings is as follows smelter building proper feet and 42 feet high power house containing engines and boilers feet and 32 feet high bri plant feet sample mill feet and 75 feet high ore bins feet and 40 feet high storage bins for receiving from vehicles feet and 32 feet high office building and laboratory feet one story high the furnace the furnace has a maximum capacity of tons per day of 24 hours but by bank b a i ipg the fires as at present and brunnig w with ith but one shift can be made to handle as little as 50 to 60 tons it collects values in a copper matte the furnace is inches at the tu yeres and from the out the tle the tapping floor to the top of the storage bins from there the flue dust is taken to the bri plant and thence passes with wah the concentrates and other fines on the charging floor there are two six beam fairbanks morse scales for weighing tle th e furnace charges on the other side of the smelter buildings and under separate roof is located a tank house which contains a foot tank with a capacity of gallons of water this furnishes water for the the boilers in the power plant another tank dislocated is located on top of the hill to be used for fire clr protection this is at an elevation giving ing good pressure in all parts of the smelter plant and thus obviates the necessity of any more extensive precautionary work the dust chamber is feet over all the chamber inside of the building is six fea feet wide outside the chamber enlarges to eight feet and just before entering the steel stack enlarges into an apartment feet and 22 feet high here the current with the gases from the furnace is checked in its rapid progress much like a river entering a lake or still body of water where there is a strong precipitating influence the particles of valuable metals that have not been dropped along the dust chamber are precipitated in this big chamber the iron stack is feet high and sets upon a base of about 25 feet in height placing the top of the stack feet above the charging floor all parts of the smelting smelling sm elting furnace are of the latest type the hot blast stove effects ahugh a high saving in coke wood being used as fuel in it it can discharge the air into the furnace at a temperature of to degrees gibes fahrenheit in this manner costly coke is saved and as wood is cheap here operation will be reduced to the lowest economy in the consumption of fuel the sampling mill the sampler has a capacity of tons per day the building is surface area and 70 feet high measuring from the charging floor to the top of the roof the arrangement of machinery in this structure and the channels along which ore passes are of the most approved order embodying all possible economies and looking to the greater end of absolute accuracy in every detail the ore on being received from the sample mill bins passes through a blake crusher from this crusher it is spouted to a 54 foot elevator which raises the crushed material to the top of the building from the receptacle receiving it there the ore is again spouted to a five foot snyder sampler in this machine four fifths of the ore is discarded the other fifth passing through a spout to a blake crusher where the size is still further reduced from this crusher the ore passes to a 42 inch snyder sampler where nine tenths is discarded one tenth being saved and passed on to rolls this crushing reduces the size of the particles further preparing ofle them m for the third and last sampling machine which Is 27 inches in diameter and of tle the sn snyder ader pattern patie rn another separation is effected here nine tenths being discarded and one tenth reserved for the tests of values carried the material discarded by each of the three samplers is passed to the elevator and by it raised to the top of the building and from there spouted to the distributing bins where it is drawn from the dump into the storage bins in readiness for the smelter the final sample is passed through a sample grinder the product of the sample grinder is quartered down in the customary manner the final sample is then divided into three separate parts one of which the smelter keeps for their analysis to determine the gold silver and copper contents of th the e ore the first duplicate is given to the i mine owner and the second duplicate is sealed and stored for the umpire sample which is to be proven in case there is a too wide variation vErria tion between the assay of the mine and the smelter company the machinery of the sample mill is driven by a rope drive from the engine room of the main power plant ore shipments arriving at the smelter on cars are delivered direct to the crusher if the ore comes in wagons it is deli evered into a series of eighteen bins arranged into three groups of six rix bins each to facilitate movement of the ores received in the wagon bins a tram has been constructed across the railway track between the bins and the crusher the bins to receive the richer grade ore are lined with sheet steel that r they anay ay be cleaned readily the laboratory the laboratory is separate from the amel ter er building being a sightly artistic structure with the appearance of a dwelling located a short distance from the main build ng ing and convenient for the work intended four rooms are devoted to laboratory work one for fire assaying another for wet assaying a third for weighing and the fourth is used as a sample room in the dry assay room the analysis for gold silver and the precious metals is perfumed perfo med and in the wet assay room are the determinations for sulphur copper silica lime etc all ali the appliances ances for this work are of the latest enabling the operator to determine these elements with the greatest possible precision obtainable the wet assay room is so constructed that the fumes arising from work have free vent through the ceiling besides which there is a hood to receive vapors from acids and other noxious substances the scales in the weighing room are given all possible accuracy curacy by separation from the timbers of the building and resting upon independent foundations these are balanced with careful precision an ordinary brick muffle furnace is used in the the dry assay room this furnace consumes elther either coke or charcoal no expense is spared in making this part of the laboratory a absolutely accurate as the success of the smelter enterprise depends 1 bip upon the th correctness of determinations in the babora labo tory it is the purpose odthe of the management management to conduct a business that will meet the th unqualified approval of the mining men aj in those transactions affecting the public all guarantees of honesty and thoroughness that may be woven about the work mark the policy of the smelter company in the laboratory is constructed a large fireproof fire proof brick vault in which to sto store rethe the precious metals extracted until they cabbe shipped the entire building is lighted with electricity the work rooms are made comfortable for table and furnished in the substantial permanent style of all work done by the company the beam for the scales used in weighing ores received by means of wagons is in the office of the laboratory a bay window being constructed for the convenience of the weighing manby thiis this arrangement the work may progress rapidly and with saving of time the building is heated by furnace in the most economical manner other con are of the same complete order |