US4379714A
Expired / Lapsed
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Method for regulating the granulometric characteristic of the components in metallurgical slags
Assignee: Vish Minno-Geoloshki Institute-Nis
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Filing: 1981-12-18
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Granted: 1983-04-12
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Expires: 2001-12-18
Abstract
Abstract A method for regulating the granulometric characteristics of the components in metallurgical slags comprising the step of imparting a vibration to the slag, after the separation of the slag from the metallurgical furnace while the slag is being cooled. The imparted vibration frequency and amplitude is adjustable and ranges respectively from 12 to 100 Hz and 0.2 to 5 mm and when circular vibration is imparted from 0.4 to 12 mm.
Inventors
- 👤 Stoycho M. Stoev
- 👤 Shtelyana D. Dshendova
- 👤 Kiril N. Stoyanov
- 👤 Raycho V. Dochev
- 👤 Tzvetan P. Krestev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:36
CPC Classifications
C; C21; C21B; C21B3/00; C21B3/04; C21B3/06; C21B2400/00; C21B2400/02; C21B2400/022; C21B2400/026; C21B2400/034; C21B2400/05; C21B2400/066; C21B2400/07; Y; Y02; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
84 words
A method for regulating the granulometric characteristics of the components in metallurgical slags, comprising the step of subjecting the slag, after the separation of the slag from a metllurgical furnace and during its cooling, to an adjustable vibration action having a frequency of from 12 to 100 Hz and an amplitude from 0.2 to 5 mm or having an average vibrational radius in circular vibration from 0.4 to 12 mm, whereby rapidly to increase the particle size of the metallic inclusions in the slag.
Claim 2
Independent Claim
84 words
A method for regulating the granulometric characteristics of the components in metallurgical slags, comprising the step of subjecting the slag, after the separation of the slag from a metllurgical furnace and during its cooling, to an adjustable vibration action having a frequency of from 12 to 100 Hz and an amplitude from 0.2 to 5 mm or having an average vibrational radius in circular vibration from 0.4 to 12 mm, whereby rapidly to increase the particle size of the metallic inclusions in the slag.
Claim 3
Dependent Claim
39 words
The method according to either claim 1, wherein after separation of the slag from the furnace and before the vibration and cooling of the slag the predominant sizes of metal inclusions therein is from about 70 to 80 microns.
Claim 4
Dependent Claim
15 words
The method according to either claim 1, wherein the metallurgical slag is a copper slag.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |