Martin J Macinnis

US Patent:

46262806, Dec 2, 1986

Filed:

Jan 24, 1986

Appl. No.:

6/838482

Inventors:

Clarence D. Vanderpool - Towanda PA
Martin B. MacInnis - Towanda PA
Judith A. Ladd - Sayre PA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

C22B 300

US Classification:

75101R

Abstract:

A process is disclosed for recovering tungsten, iron, and manganese from tungsten bearing material. The process involves digesting the material in a sulfur dioxide solution at a sufficient temperature for a sufficient time to form a digestion solution containing the major portion of the scandium, iron, and manganese, and a digestion solid containing the major portion of the tungsten which is separated from the digestion solution. The major portion of the scandium is extracted from the digestion solution with an organic consisting essentially of an extracting agent which is essentially a mixture of alkyl primary amines which are present in an amount sufficient to extract the major portion of the scandium without extracting appreciable amounts of iron and manganese, and the balance an essentially aromatic solvent. After separation of the scandium containing organic from the raffinate, the organic is stripped of the scandium with hydrochloric acid which is then separated from the stripped organic. The raffinate is adjusted to a pH of at least about 3.

US Patent:

40110737, Mar 8, 1977

Filed:

Jul 2, 1975

Appl. No.:

5/592476

Inventors:

John Allen Powers - New Albany PA
Martin Benedict MacInnis - Towanda PA
David John Port - Athens PA

Assignee:

GTE Sylvania Incorporated - Stamford CT

International Classification:

C22F 900

US Classification:

75 5BB

Abstract:

A flame spray powder of cobalt and molybdenum mixed metal agglomerates is produced by spray drying a slurry of molybdenum metal particles and cobalt oxide particles in an ammonium molybdate solution to produce agglomerates, and thereafter heating the agglomerates in a reducing atmosphere to convert the oxide particles to cobalt metal and the binder to molybdenum metal.

US Patent:

46248447, Nov 25, 1986

Filed:

Feb 4, 1985

Appl. No.:

6/697662

Inventors:

Richard A. Scheithauer - Towanda PA
Clarence D. Vanderpool - Towanda PA
Martin B. MacInnis - Towanda PA
Michael J. Miller - Towanda PA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

C01G 4100

US Classification:

423593

Abstract:

A process is disclosed for producing ammonium paratungstate which involves adding hexamethylenetetramine to a first solution of ammonium tungstate, adjusting the pH to about 2 with an acid to form a precipitate which contains the major portion of the tungsten and the hexamethylenetetramine and separating the precipitate from the resulting mother liquor. The tungsten hexamethylenetetramine precipitate is then dissolved in aqueous ammonia to form a second ammonium tungstate solution which is then heated at from about 90. degree. C. to about 100. degree. C. to form a precipitate essentially all of which is ammonium paratungstate and a mother liquor which contains essentially all of the hexamethylenetetramine. The ammonium paratungstate precipitate is then separated from the mother liquor.

US Patent:

39475557, Mar 30, 1976

Filed:

Oct 23, 1973

Appl. No.:

5/408493

Inventors:

Martin B. MacInnis - Towanda PA
Clarence D. Vanderpool - Towanda PA

Assignee:

GTE Sylvania Incorporated - Stamford CT

International Classification:

C01B 3134

US Classification:

423440

Abstract:

A process suitable for recovering refractory metal carbide values from contaminated uncemented refractory metal carbides containing an iron group metal comprises heating an admixture of the powders of the contaminated refractory metal carbides and glacial acetic acid to the boiling point of the admixture for at least about 30 minutes, the weight of the powders divided by the weight of the acid is less than 5, thereafter removing the resulting carbide solids from the acid and washing the solids with sufficient water to remove the residual acid and drying the solids.

US Patent:

42786428, Jul 14, 1981

Filed:

Jun 12, 1980

Appl. No.:

6/158670

Inventors:

Martin B. MacInnis - Towanda PA
Tai K. Kim - Towanda PA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

C01G 4100

US Classification:

423 54

Abstract:

Disclosed is a process for removing molybdenum values from aqueous solutions containing tungsten values comprising sulfidizing said solution to an extent sufficient to convert substantially all of the molybdenum values to a thiomolybdate species, said sulfidizing being substantially less than the extent necessary to convert substantially all of said tungsten values to a thiotungstate species and contacting the resulting solution containing the thiomolybdate complex ion with a suitable amount of an organic extractant for a sufficient period of time to preferentially extract the thiomolybdate complex ion into the organic extractant, said organic extractant comprising an aromatic organic solvent and a quaternary ammonium compound of the formula R. sub. 3 (CH. sub. 3)N. sup. + A. sup. -, wherein R is an alkyl group having from about 8 to 10 carbon atoms and A is an anion derived from a mineral acid.

US Patent:

45992240, Jul 8, 1986

Filed:

Aug 22, 1985

Appl. No.:

6/768376

Inventors:

Clarence D. Vanderpool - Towanda PA
Martin B. MacInnis - Towanda PA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

C01G 3902

US Classification:

423606

Abstract:

A process is disclosed for recovering molybdenum from molybdenum disulfide. The process involves forming a slurry of the molybdenum disulfide in a solution of an alkali metal hydroxide, the amount of hydroxide being sufficient to react with at least a portion of the molybdenum disulfide to form an alkali metal molybdate and an alkali sulfate, heating the slurry in an oxidizing atmosphere at an elevated temperature and pressure and for a sufficient time to effect the conversion to the molybdate, and separating the pregnant liquor containing the molybdate from any residue. To the pregnant liquor is then added a sufficient amount of a hexamine to form a hexamine-molybdenum compound containing the major portion of the molybdenum, followed by adjusting the pH to from about 1. 5 to about 3. 8 to precipitate the major portion of the hexamine-molybdenum compound, and separating the compound from the resulting mother liquor.

US Patent:

47599154, Jul 26, 1988

Filed:

Oct 11, 1985

Appl. No.:

6/786453

Inventors:

Tai K. Kim - Towanda PA
Alan D. Douglas - Towanda PA
Robert P. McClintic - Monroeton PA
Martin B. MacInnis - Towanda PA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

C01G 4100

US Classification:

423 54

Abstract:

An improvement is disclosed in a process wherein tungsten values are extracted from an aqueous alkali metal tungstate solution by an organic extractant, and then stripped from the organic with an ammonia solution, the improvement being removing bromine from the major portion of the stripped organic and thereafter using at least a portion of the resulting bromine-free stripped organic to make up at least a portion of the organic extractant.

US Patent:

44090196, Oct 11, 1983

Filed:

Dec 10, 1982

Appl. No.:

6/448579

Inventors:

Clarence D. Vanderpool - Towanda PA
Martin B. MacInnis - Towanda PA

Assignee:

GTE Products Corporation - Stamford CT

International Classification:

C22B 2304

US Classification:

75 05AA

Abstract:

A fine cobalt metal powder is produced from pieces of relatively pure cobalt by dissolving the cobalt pieces in an aqueous solution of hydrogen iodide and iodine and forming a cobalt containing solid which is subsequently reduced to a fine cobalt metal powder.