Patents by Inventor Rudolph Pruszko
Rudolph Pruszko has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20030215379Abstract: Disclosed is an apparatus for the calcination of materials using low temperature heating and indirect heating for calcination. Also disclosed are a variety of processes for calcination of materials which have-reduced emissions of pollutants compared to conventional processes.Type: ApplicationFiled: March 21, 2003Publication date: November 20, 2003Applicant: Environmental Projects, Inc.Inventors: Dale Lee Denham, Rudolph Pruszko, Wayne C. Hazen
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Publication number: 20030091486Abstract: Disclosed is an apparatus for the calcination of materials using low temperature heating and indirect heating for calcination. Also disclosed are a variety of processes for calcination of materials which have reduced emissions of pollutants compared to conventional processes.Type: ApplicationFiled: October 1, 2002Publication date: May 15, 2003Applicant: Environmental Projects, Inc.Inventors: Dale Lee Denham, Rudolph Pruszko, Wayne C. Hazen
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Publication number: 20030084547Abstract: The present invention provides a process for producing sodium carbonate monohydrate crystals by introduction of anhydrous sodium carbonate into a saturated sodium carbonate brine solution under conditions in which sodium carbonate monohydrate formation is favored. As the anhydrous sodium carbonate dissolves, the brine becomes supersaturated resulting in relief of supersaturation by formation of sodium carbonate monohydrate crystals. The process includes controlling supersaturation and its relief to achieve growth of existing sodium carbonate monohydrate crystals rather than nucleation and formation of new sodium carbonate monohydrate crystals. The resulting crystals are separated from insoluble impurities on a size separation basis.Type: ApplicationFiled: July 20, 2001Publication date: May 8, 2003Applicant: Environmental Projects, Inc.Inventors: Wayne C. Hazen, Dale Lee Denham, Rudolph Pruszko, David R. Baughman
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Patent number: 6479025Abstract: A process for the production of sodium carbonate monohydrate is disclosed. The process includes heating a feed stream containing trona and insoluble impurities in a calcining apparatus to a temperature of less than about 350° C. to form anhydrous sodium carbonate. The anhydrous sodium carbonate is contacted with a saturated sodium carbonate brine solution to form sodium carbonate monohydrate crystals. Sodium carbonate monohydrate crystals are separated from insoluble impurities.Type: GrantFiled: September 11, 1998Date of Patent: November 12, 2002Assignee: Environmental Projects, Inc.Inventors: Dale Lee Denham, Jr., Rudolph Pruszko, Wayne C. Hazen
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Patent number: 6464736Abstract: The present invention provides a process for producing crystals of a polymorphic compound in a first crystal structure by introduction of the compound in a second crystal structure into a saturated brine solution of the compound under conditions in which formation of the first crystal structure is favored and without evaporation or changes in temperature. As the second crystal structure dissolves, the brine becomes supersaturated resulting in relief of supersaturation by formation of crystals of the first crystal structure. The process includes controlling supersaturation and its relief to achieve growth of existing crystals of the first crystal structure rather than nucleation and formation of new crystals. The resulting crystals are separated from insoluble impurities on a size separation basis.Type: GrantFiled: March 9, 2000Date of Patent: October 15, 2002Assignee: Environmental Projects, Inc.Inventors: Wayne C. Hazen, Dale Lee Denham, Jr., David R. Baughman, Rudolph Pruszko
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Patent number: 6284005Abstract: The present invention provides a process for producing sodium carbonate monohydrate crystals by introduction of anhydrous sodium carbonate into a saturated sodium carbonate brine solution under conditions in which sodium carbonate monohydrate formation is favored. As the anhydrous sodium carbonate dissolves, the brine becomes supersaturated resulting in relief of supersaturation by formation of sodium carbonate monohydrate crystals. The process includes controlling supersaturation and its relief to achieve growth of existing sodium carbonate monohydrate crystals rather than nucleation and formation of new sodium carbonate monohydrate crystals. The resulting crystals are separated from insoluble impurities on a size separation basis.Type: GrantFiled: January 28, 1999Date of Patent: September 4, 2001Assignee: Environmental Projects, Inc.Inventors: Wayne C. Hazen, Dale Lee Denham, Jr., Rudolph Pruszko, David R. Baughman, Ralph B. Tacoma
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Publication number: 20010007650Abstract: Disclosed is an apparatus for the calcination of materials using low temperature heating and indirect heating for calcination. Also disclosed are a variety of processes for calcination of materials which have reduced emissions of pollutants compared to conventional processes.Type: ApplicationFiled: September 11, 1998Publication date: July 12, 2001Inventors: DALE LEE DENHAM, JR., RUDOLPH PRUSZKO, WAYNE C. HAZEN
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Patent number: 6173840Abstract: Processes for purification of saline minerals using magnetic separation are disclosed. In particular, saline minerals can include trona, borates, potash, sulfates, nitrates and chlorides. The magnetic separation can include high intensity magnetic separation which can be conducted at greater than about 20,000 Gauss and up to greater than about 50,000 Gauss. Other embodiments of the invention include calcination of a saline mineral in an inert atmosphere or in an oxygen-containing atmosphere at a high temperature prior to magnetic separation. A further embodiment of the invention includes pre-alignment of particles on a surface to align the particles of high magnetic force during a magnetic separation step. Also disclosed are various embodiments of magnetic separation which include subjecting an ore to a preliminary magnetic field prior to magnetic separation.Type: GrantFiled: February 20, 1998Date of Patent: January 16, 2001Assignee: Environmental Projects, Inc.Inventors: Rudolph Pruszko, Roland Schmidt, Dale Lee Denham, Jr.
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Patent number: 5911959Abstract: Disclosed are a variety of processes for the purification of saline minerals and in particular, trona. Some of the processes include a combination wet and dry recovery process which results in high recovery and purification at relatively low cost. The dry separation methods can include density separation, magnetic separation and electrostatic separation. Other processes include a modified slush process for the purification of calcined trona (sodium carbonate) by the introduction of anhydrous sodium carbonate into a saturated brine solution and subsequent separation of insoluble impurities.Type: GrantFiled: November 7, 1997Date of Patent: June 15, 1999Assignee: Environmental Projects, Inc.Inventors: John S. Wold, Wayne C. Hazen, Rudolph Pruszko, Roland Schmidt, Dale Lee Denham, Jr.