JOSEPH GABOR SELMECZI
Engineers in Pittsburgh, PA
License number
Pennsylvania PE014611E
Category
Engineers
Type
Professional Engineer
Address
Address
Pittsburgh, PA 15243
Professional information
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Process For Dewatering Fine Granular Materials
Process For Dewatering Fine Granular Materials
US Patent:
4420404, Dec 13, 1983
Filed:
Dec 14, 1981
Appl. No.:
6/330227
Inventors:
David W. Coate - Pittsburgh PA
Joseph G. Selmeczi - Pittsburgh PA
Joseph G. Selmeczi - Pittsburgh PA
Assignee:
Dravo Corporation - Pittsburgh PA
International Classification:
B01D 3300
US Classification:
210808
Abstract:
A process for the dewatering of fine granular material is disclosed. During compression of the material, fluid is expressed and a small percentage of the material is intentionally permitted to escape through a self-cleaning opening in the apparatus. By maintaining the smallest dimension of the opening in the range of one to five times the diameter of the largest particle in the material, the opening remain essentially clear of any material which could cause plugging.
Lime Scrubbing Process For Sulfur Dioxide Removal From Gases
Lime Scrubbing Process For Sulfur Dioxide Removal From Gases
US Patent:
4164549, Aug 14, 1979
Filed:
Jan 30, 1978
Appl. No.:
5/873280
Inventors:
Joseph G. Selmeczi - Pittsburgh PA
Assignee:
Dravo Corporation - Pittsburgh PA
International Classification:
C01B 1700
US Classification:
423242
Abstract:
A method for scrubbing sulfur dioxide from gaseous streams using a calcium salt-containing aqueous liquor having 250-5000 parts per million of magnesium ion to enable fast and efficient return to operation following a period of interruption of the gaseous flow by adjusting the pH of the liquor to a value between 9. 8 and 12. 0 during said interruption to convert sulfite ion species in the liquor to solid magnesium hydroxide and prevent oxidation thereof, and adding magnesium-containing lime to the liquor after resumption of the scrubbing process when the pH of the inlet liquor has dropped below 9. 8 to the previous operational mode.
Process For Stabilizing Aqueous Coal Sludges
Process For Stabilizing Aqueous Coal Sludges
US Patent:
4015997, Apr 5, 1977
Filed:
Jul 22, 1975
Appl. No.:
5/598117
Inventors:
Joseph G. Selmeczi - Pittsburgh PA
Donald H. Marlin - Pittsburgh PA
Daniel W. Kestner - Coraopolis PA
Donald H. Marlin - Pittsburgh PA
Daniel W. Kestner - Coraopolis PA
Assignee:
Dravo Corporation - Pittsburgh PA
International Classification:
C08K 1100
US Classification:
106287R
Abstract:
The solids content of aqueous coal sludge slurries such as coal washings are stabilized in a hardened state by concentrating the solids content thereof, adding to the concentrated coal sludge 2-50% by weight of the solids of granulated blast furnace slag, with intimate mixing, and maintaining the mixture in a quiescent state and in the presence of excess water to produce a sedentary mass having load supportive properties suitable as landfill.