Spray operation method for monolithic refractories
US5766689A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | May 10, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D1/1642
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spray operation method for monolithic refractories, which comprises forcibly sending to an application field by a force feed pump and a force feed piping a self flowable mixed batch prepared by mixing, together with water, a powder composition for monolithic refractories comprising refractory aggregates, a refractory powder and a small amount of a dispersant; injecting into the mixed batch, compressed air and a required amount of a rapid setting agent respectively from a compressed air injection inlet and a rapid setting agent injection inlet provided at a downstream portion or downstream portions of the force feed piping; sending the mixed batch together with the compressed air by a nozzle piping to a spray nozzle attached to the forward end of the nozzle piping; and spraying the mixed batch from the spray nozzle to an application site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.