| 摘要 |
<p>APPARATUS FOR APPLYING GRANULAR REFRACTORY MATERIAL TO SURFACES An improved apparatus for controlled application of granular refractory material to the linings of ladles, furnaces, and other open top vessels employed in the handling of molten metals. The apparatus comprises a generally vertically arranged pair of telescopically related conduits, there being a nozzle on the lower end of the innermost conduit. Granular material is supplied to the upper end of the innermost conduit and water is supplied through a member to the upper end of the outer conduit and from the lower end of the outer conduit to the nozzle. Means is provided for rotating the conduits and hence the nozzle. Other means is provided for raising and lowering the nozzle and the entire apparatus may be suspended from a crane or the like over the vessel whose lining is to be coated, repaired, filled, etc. The invention is characterized by the fact that the apparatus is capable of being so used that the operator may apply the material to any selected area of the surface being treated, whereby cracks, holes, or other defective areas of the lining may be repaired as distinguished from having to apply the granular material to the entire surface in order to repair one area of the same.</p> |
