Patent ID: 11858033
Assignee: J.H. FLETCHER & CO.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C | IPC B

Claim 19:
20. A method of installing or removing a porous plug to or from a port of a metallurgic ladle, the method comprising:
rotating an extendable boom about a vertical axis and rotating a mast relative to the extendable boom, wherein the mast is rotatably connected to an end of the extendable boom;
tilting the boom up and/or down relative to a base that is remote from the ladle and raising or lowering the boom;
rotatably adjusting the mast relative to the boom in response to raising or lowering the boom, and orienting the mast horizontally;
rotatably adjusting the mast relative to the boom in response to rotating the boom about the vertical axis and thereby aligning an insertion/removal axis of the mast with the port of the ladle;
securing a porous plug to a slider mast; and
translating the slider mast having the porous plug secured thereto along the insertion/removal axis.