Patent · US Expired

Method for the manufacture of powders from molten materials

US4897111A · kind A · utility

5Cited by

2References

9Claims

0Family size

Assignee

Leybold GmBH · DE

Inventors

Sigurd Jonsson · Kristianstad, SE
Michael Hohmann · Leipzig, DE
Gerhard Gross · Achern, DE
Hans Bergmann · Bayreuth, DE

Key dates

Filing date	Jun 15, 1988
Grant date	Jan 30, 1990
Priority date	—
Expiry date	Jun 15, 2008

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2/04
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

For a process for the manufacture of powders from molten materials by atomizing the melt to particles by means of fluid media and cooling the particles as they fall, a melting chamber (3) is provided which has a melting system (4) disposed in the melting chamber (3) and an atomizing tower (8) is provided which is associated with the atomizing system (9) and attached to the melting chamber (3). For the production of powders of finest particle size with high purity and uniformity, a plurality of nozzles (11, 12, . . .) which can be aimed in their holders at the molten stream, are used for projecting a low-boiling liquefied gas under a pressure of 50 to 700 bar against the molten stream (23) entering the atomizing tower (8).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.