Abstract:
A stave comprising an outer housing, an inner pipe circuit comprising individual pipes housed within the outer housing, wherein the individual pipes each has an inlet end and an outlet end and wherein each pipe may or may not be mechanically connected to another pipe, and a manifold, integral with or disposed on or in the housing; wherein the inlet and/or outlet ends of each individual pipe is disposed in or housed by the manifold. The manifold may be made of carbon steel while the housing may be made of copper. Each of the inlet and outlet ends of each individual pipe may be surrounded in part by cast copper within a housing of the manifold.
Abstract:
A stave/brick construction, comprising: a stave having a plurality of ribs and a plurality of channels, wherein a front face of the stave defines a first opening into each of the channels; a plurality of bricks wherein each brick is insertable into one of the plurality of channels via its first opening to a position, upon rotation of the brick, partially disposed in the one channel such that one or more portions of the brick at least partially engage one or more surfaces of the one channel and/or of a first rib of the plurality of ribs whereby the brick is locked against removal from the one channel through its first opening via linear movement without first being rotated; and one or more wear monitors and/or thermocouples, wherein each wear monitor and thennocouple is disposed through or adjacent to the stave and/or one or more of the bricks.
Abstract:
A frame/brick and/or a stave/brick construction, having a frame having a plurality of ribs and a plurality of channels, wherein a front face of the frame defines a first opening into each of the channels, and a plurality of bricks wherein each brick is insertable into one of the plurality of channels via its first opening to a position, upon rotation of the brick, partially disposed in the one channel such that one or more portions of the brick at least partially engage one or more surfaces of the one channel and/or of a first rib of the plurality of ribs whereby the brick is locked against removal from the one channel through its first opening via linear movement without first being rotated.
Abstract:
A metal making lance tip assembly including a tip face member having a plurality of outlets, a plurality of nozzles corresponding in number and in communication with the tip face member outlets, and a coolant flow baffle member for directing coolant flow around the nozzles. The lance tip assembly further includes both a generally centrally disposed coolant fluid diverting protrusion and a plurality of radial vanes at the inner surface of the lance tip face member, which vanes preferably extend essentially the entire axial distance between the inner surface of the lance tip face member and a lower surface of the coolant flow baffle member and essentially the entire radial distance from the central protrusion to an annular coolant fluid return passageway.
Abstract:
A method and an apparatus for charging a particulate, for example lime, with a carrier gas, for example oxygen, through a lance into a metallurgical vessel or furnace. The apparatus comprises a metallurgical lance having an inner barrel communicating with the tip of the lance and a lance header, an outer tube having one end in open communication with the inner particulate barrel at the header and a second end sealed on the outside of a particulate inlet tube. The particulate inlet tube extends a first portion coaxially within the outer tube, and a second portion extends outside the outer tube. The second portion includes a shut-off valve. An auxiliary gas tube is in communication with the outer tube upstream of the particulate inlet tube opening within the outer tube.
Abstract:
A secondary stave support for a furnace stave with a water pipe having a first portion of the water pipe external to the furnace stave and a second portion of the water pipe also external to a furnace shell wall comprising: a protection pipe having first and second ends, wherein the protection pipe is coaxially disposed about the water pipe with the first end nearest the stave; and a first gas-tight seal, disposed between the first end of the protection pipe and a third portion of the water pipe, prevents gas flow from within the furnace shell wall into an annular space between the protection pipe and the water pipe.
Abstract:
A plate cooler stave for use in a furnace having a shell wall, comprising: a top portion housing at least one cooling fluid inlet and at least one cooling fluid outlet for the flow of cooling fluid to and from the plate cooler stave from outside the furnace; and a main body disposed at an angle relative to the top portion so that the main body may be inserted into the furnace through an opening defined by the shell wall, wherein upon installation, at least a part of the top portion is disposed in the opening.
Abstract:
Pipe fractures in cooling staves of blast furnaces are a common failure mechanism. Herein is a repair method for a cooling stave (30) utilized in a blast furnace, the cooling stave (30) having a compromised stave inlet outlet pipe (27) attached to the cooling pipe in the cooling stave (30), the method comprises of the steps of inserting a rigid pipe (1) into the compromised stave inlet outlet pipe (27) to form a first annulus (28); inflating a bladder (20) disposed inside the inner pipe (1) and cooling stave (30); injecting a first uncured epoxy material into the first annulus (28); permitting the first uncured epoxy to cure; and removing the bladder (20).
Abstract:
A distributor for a post-combustion lance, comprising: an annular member, an inner reinforcing sleeve and an outer sleeve, wherein the annular member and the inner reinforcing sleeve may be made from different materials and the annular member and the outer sleeve each may be made from a first material. The annular member and the outer sleeve each may be made from a first material and the inner reinforcing sleeve may be made from a second material, a plurality of longitudinal ribs are spaced around an inner surface of the inner reinforcing sleeve and/or one or more of the plurality of longitudinal ribs is made of steel or other high strength material. Further, a plurality of longitudinal ribs may be spaced around an inner surface of the outer sleeve and may be made from steel or other high strength material. The annular member defines a plurality of openings that permit gas flow from within a gas passageway of the lance to flow through the annular member and outside of the lance and the inner reinforcing sleeve may define a plurality of first openings and the annular member may define a plurality of second openings, wherein each of the first and second openings are in fluid communication, directly or indirectly, with a first cooling fluid passageway of the lance. Further, each of the first openings is contiguous with and in direct fluid communication with one of the second openings. Additionally, the annular member may define a plurality of third openings, wherein each of the third openings is in fluid communication with a second cooling fluid passageway of the lance.
Abstract:
A lance for injecting gas into a furnace vessel. The lance imparts a spiral or swirling flow to gas discharged by the lance. The lance includes a plurality of internally water-cooled flow vanes in fluid communication with a fluid- cooled structure that is discrete from the fluid-cooled outer wall of the lance. The result is a lance that effectively discharges gas with a desired swirling motion, that is comparatively simple in design and construction, and whose flow vanes are capable of withstanding the extreme thermal stresses encountered in a metallurgical or other high temperature furnace vessel.