Patent · US Expired

Process for sorting coarse to fine materials according to their chemical composition

US4441616A · kind A · utility

20Cited by

5References

24Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Rainer Konig · Kallstadt, DE
Hans Freund · Schweinfurt, DE
Helga Heide · Kelkheim, DE
Rolf A. Sieglen · Pocking, DE

Key dates

Filing date	Oct 27, 1980
Grant date	Apr 10, 1984
Priority date	—
Expiry date	Oct 27, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T436/25375
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Process for sorting coarse to fine materials according to their chemical composition, in which samples are taken and analyzed, and in which the transporting and/or further processing of the materials is controlled according to the results of the analysis. The samples are taken in the form of an air swirled mixture of coarse dust and fine dust (i.e., particles with grain sizes of less than 200 .mu.m) which is obtained as a by-product or is produced artificially. The coarser dust is separated from the mixture. All of the fine dust or a fraction thereof is analyzed.

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