The oasis., 1893-07-27
A steam ceaeralor and smelilng Furnace

ventiOn to combine with a smelting
 furnace devices for generating steam
 whereby the heat employed in smelt-
 ing the ore is utilized in producing
 steam power to be used in driving en-
 gines and other machinery. The fur
 mace is of usual construction having
 the stack and feed door. The body
 of the furnace consists of concentric
 outerand inner walls. The outer wall
 is preferably made of boiler iron and
 the inner wall is made of heavy cop
 per, and the twGare connected together
 by numerous stays to resist the pres.
 sure which Is generated between the
 two. There is brick lining of the
 crucible in the lower part of the fur
 mace and upon which it is supported.
 There is the usual settling pot into
 which the slag is discharged from the
 slag tap, and an overflow pipe which
 delivers the slag after the poi is full
 A water tank is sosituated with ref
 erence to this discharge overflow pipe that the slag falls into the water tank, where it becomes granuated and falls to the bottom. The water is thus
 heated and displaced and flows over into another tank placed beside the the first one. From this latter tank the heated water is pumped into the jacket surrounding the furnace, being delivered around the bottom and ris- ing as it is heated Whenever suffi- cient amount of slag has been received | into the first tank a gate is raised and the water will wash out the granulated { slag.
 This first tank into which the slag passes Is designed to hold about 300 gallons of water, and at any time it can be cleared of slag by the discharge of 100 gallons. From the upper part of the jacket wnieh surrounds the fur nace four large pipes lead to a boiler.
 This boiler is situated at such an ele- vation with relation to the water jacket of the furnace that the latter will always be kept full of water and it. and the boiler are constantly sup piled to retain the proper level in the boiler by means of the pump be- fore mentioned. the water being so heated that it is delivered into the water jacket at very near the boiling point. By means of the large conect-  ing pipes free discharge of steam n- into the boiler is permitted without carrying the water with it. irhe lower part Of the inner jacket Y curved so that the space at the bottom of the jacket i' shaped to easily deliver and discharge through waived outlet any sediment when the jacket is to be washed There is an air drum sur rounding the furnace and having six or more tuyercs opening therefrcm in the usual manner.
 In his drawing MT Giroux shows $ additional small tuyeres which pass i through the brick lining of the cruel. { ble by which supplementary blast { may be introduced, thus making the ( smelling more rapid. I
 By this arrangement, the inventor states, he Is enabled to provide one or I more steam boilers with any desired steam pressure and keep 1t up as long as the furnace is in operation, while at /, the same time the slag is easily dis . posed of, It serves to heat the water / before it enters the water jacket. and ', the labor of removing the slag from the furnace is dispensed with. The small tuyercs are connected with an T mir compressor which will give an | air pressure of about ten pounds, while { Inc blust drum from whieh the air is | delivered through the other tuyeres Is $