Trouvé à l'intérieur – Page 235... 1912-20 , includes a considerable amount of graphite shipped from France but ... countries 60 Data for domestic production , 1928-39 , are approximate. Trouvé à l'intérieur – Page 7TABLE 4 U.S. IMPORTS FOR CONSUMPTION OF ZIRCONIUM AND HAFNIUM , BY CLASS AND COUNTRY ... WORLD PRODUCTION , BY COUNTRY ( ZIRCONIUM AND HAFNIUM - 1993 7 -U S ... Trouvé à l'intérieur – Page 863Today , the separation of zirconium and hafnium by multistage counter - current liquid - liquid extraction is routine ( 41 ) ( see ... Reactive Metals Inc . , AMAX Specialty Metals , Toyo Zirconium in Japan , and Pechiney Ugine Kuhlmann in France . ... A system of this type , using trioctylamine in kerosene as the organic solvent , is used by Nippon Mining of Japan in the production of zirconium ( 55 ) . Trouvé à l'intérieur – Page 85-1ZIRCONIUM AND HAFNIUM By Joseph Gambogi Domestic survey data and tables were prepared by Connie Lopez , statistical assistant , and the world production ... Trouvé à l'intérieur – Page 72Domestic Production and Use : Hafnium is recovered as a byproduct in the production ... Import Sources ( 1973-76 ) : France 75 % , remainder United Kingdom ... Trouvé à l'intérieur – Page 715PRODUCTION OF ZIRCONIUM AND HAFNIUM Zirconium metal production in the United ... These were from Canada, France, West Germany, Switzerland, Netherlands, ... Trouvé à l'intérieur – Page 2INTRODUCTION developed in the mid - 1940's , and commercial production ... nonaqueous Hf - Zr separation work in France and Japan led the Bureau to initiate ... Trouvé à l'intérieur – Page 188ZIRCONIUM AND HAFNIUM ( Data in metric tons unless otherwise noted ) Domestic Production and Use : The zirconium - silicate mineral zircon is produced as a ... Trouvé à l'intérieur – Page 521Table 19.2 Annual world production capacity for zirconium metal [19.4] a) Calcium-reduced ... The other big problem was the hafnium content of natural ... Trouvé à l'intérieur – Page 85-2zirconium , unlike nuclear grade , contains hafnium and was used in the chemical ... of production stocks when prices were at an alltime high in 2012 . Trouvé à l'intérieur – Page 715Hafnium crystal bar Thailand 3,549 276 * 2,469 production in 1970 was 35 short tons ... so the difference between the France , West Germany , Switzerland ... Trouvé à l'intérieur – Page 2INTRODUCTION developed in the mid-1940's, and commercial production of ... In 1981, reports of promising, nonaqueous Hf-Zr separation work in France and ... Trouvé à l'intérieur – Page 539For the production of zirconium, the process uses magnesium to reduce ... Zirconium and hafnium occur together in the nature, and their separation has been ... Trouvé à l'intérieur – Page 715Hafnium crystal bar Thailand 3,549 276 * 2,469 production in 1970 was 35 short tons ... so the difference between the France , West Germany , Switzerland ... Trouvé à l'intérieur – Page 277Domestic Production and Use : Hafnium is recovered as a byproduct in the ... Import Sources ( 1969-72 ) : France 65 % , Japan 8 % , West Germany 7 % ... Trouvé à l'intérieur – Page 97Benzoylacetone complexes of Pa ( IV ) and HP ( IV ) , 33 : 8863 HAFNIUM 176 ... HADRON REACT IONS / MULTIPLE PRODUCTION Multi particle production in high ... Trouvé à l'intérieur – Page 38In 1955, the production was about 1000 kg of hafnium-free zirconium sponge. Thann et Mulhouse supplied ... TABLE 1 — Zirconium sponge production in France. Trouvé à l'intérieur – Page 948Hafnium supply - demand relationships , 1973-83 ( Short tons ) 1975 1976 WORLD ... Estimates of hafnium production in the U.S.S.R. , France , and Japan are ... Trouvé à l'intérieur – Page 1053Hafnium supply - demand relationships , 1969-1979 e ( Short tons ) WORLD ... Estimates of hafnium production in the U.S.S.R. , France , and Japan are ... Trouvé à l'intérieur – Page 44... II 34060 MONTPELLIER CEDEX ( FRANCE ) Abstract Controlled crystallization of a glass of the As - Ge - Se system , nucleated by hafnium resulted in production of glass - ceramics with better thermomechanical properties than the starting ... Trouvé à l'intérieur – Page 277Domestic Production and Use : Hafnium is recovered as a byproduct in the ... ( 1969-72 ) : France 65 % , Japan 8 % , West Germany 7 % , remainder Canada ... Trouvé à l'intérieur – Page 188ZIRCONIUM AND HAFNIUM ( Data in metric tons unless otherwise noted ) Domestic Production and Use : The zirconium - silicate mineral zircon is produced as a ... Trouvé à l'intérieur – Page 15Separation of zirconium from hafnium by solvent extraction with tri - n ... on plant - scale production in France is based on extractive distillation . Trouvé à l'intérieur – Page 46520P / 534 USA " The production and properties of graphite for reactors " ( Currie , et al . ) ... P / 347 France " Separation of zirconium from hafnium " ( Hure , Saint - James ) P / 876 India " Separation of hafnium from zirconium by vapour phase de ... Trouvé à l'intérieur – Page 190ZIRCONIUM AND HAFNIUM ( Data in metric tons unless otherwise noted ) Domestic Production and Use : The zirconium - silicate mineral zircon is produced as a ... Trouvé à l'intérieur – Page 24Industry Highlights in 1990 Hafnium production continued to be low , primarily ... and advanced ceramics was purchased by a company based in France , and a ... Trouvé à l'intérieur – Page 115The separation of hafnium from zirconium attracted special attention . ... of solvent extraction as reported by Shelton16 , and Hure19 ( France ) ; of fractional crystallization as reported by Sajin20 ( U.S.S.R. ) ... and of liquid bismuth , their production technology , special handling techniques , and corrosion characteristics were ... Trouvé à l'intérieur – Page 190HAFNIUM. (Data in metric tons, unless noted) Domestic Production and Use: Zircon ... Zirconium, wrought, unwrought, waste and scrap: France, 55%; Germany, ... Trouvé à l'intérieur – Page 17A small quantity of hafnium was produced in France , also as a by - product of hafnium - free zirconium metal . United States may come to be preferred as a rare earth source . The year 1964 witnessed a marked increase in the production of ... Trouvé à l'intérieur – Page 277Domestic Production and Use : Hafnium is recovered as a byproduct in the ... Import Sources ( 1969-72 ) : France 65 % , Japan 8 % , West Germany 7 % ... Trouvé à l'intérieur – Page 192ZIRCONIUM AND HAFNIUM ( Data in metric tons unless otherwise noted ) Domestic Production and Use : In 2017 , two firms recovered zircon ( zirconium silicate ) ... Trouvé à l'intérieur – Page 194ZIRCONIUM AND HAFNIUM ( Data in metric tons unless otherwise noted ) Domestic Production and Use : In 2015 , three firms recovered zircon ( zirconium ... Trouvé à l'intérieur – Page 12HOLMES , H. P. , BARR , M. M. , AND GILBERT , H. L. Production of Hafnium . ... R. ( assigned to Commissariat a l'énergie atomique , Paris , France ) . Trouvé à l'intérieur – Page 68Domestic Production and Use : Hafnium is recovered as a byproduct in the production of hafnium - free ... Import Sources ( 1983-86 ) : France , 100 % . 5 . Trouvé à l'intérieur – Page 24Industry Highlights in 1990 Hafnium production continued to be low , primarily ... and advanced ceramics was purchased by a company based in France , and a ... Trouvé à l'intérieur – Page 86-2Imports originated primarily from Brazil , with a small amount shipped from France . U.S. imports of unwrought hafnium metal and waste and scrap were 10 ... Trouvé à l'intérieur – Page 580Chairman : Mr . C . Eichner ( France ) Vice - Chairman : Mr . R . Henych ( Czechoslovakia ) Scientific Secretaries : Messrs . D . J . Dewar and R . Hara Zirconium metal production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S . M ... J . Hure and R . Saint - James Separation of hafnium from zirconium by vapour phase dechlorination . Trouvé à l'intérieur – Page 70Domestic Production and Use : Hafnium is recovered as a byproduct in the production of hafnium ... Import Sources ( 1970-73 ) : France 95 % , Japan 2 % ... Trouvé à l'intérieur – Page 505Physico - chemical methods of uranium production control , " Vinogradov . ... France " Separation of zirconium from hafnium , ” Hure , SaintJames . India . Trouvé à l'intérieur – Page 211The main producing countries are France and the USA which produce an estimated 30 tonnes and 50 tonnes respectively. The biggest users of hafnium are the ... Trouvé à l'intérieur – Page 85-2Foreign Trade of hafnium were in high - temperature ceramics , nickel - base ... Yttria - stabilized zirconia ( YSZ ) was used in the manufacture of oxygen ... Trouvé à l'intérieur – Page 3070A method for reducing methane production during conversion of an oxygenate ... boron oxide and Caluire , all of France , assignors to Institut Francais du ... Trouvé à l'intérieur – Page 72Domestic Production and Use : Hafnium is recovered as a byproduct in the ... Import Sources ( 1972-75 ) : France 95 % , Japan 2 % , West Germany 2 % ... Trouvé à l'intérieur – Page 525P / 343 ( France ) " Production of nuclear graphite in France " P. ... et al 20 P / 347 ( France ) " Separation of zirconium from hafnium " J. Hure and R. Trouvé à l'intérieur – Page 188ZIRCONIUM AND HAFNIUM ( Data in metric tons unless otherwise noted ) Domestic Production and Use : In 2014 , three firms mined zircon from surface - mining ... Trouvé à l'intérieur – Page 561Le titre évalué d'après les impuretés dosées est de l'ordre de 99,99 % pour l'échantillon de zirconium Van Arkel analysé ( 85 à 89.10-8 dont 66.10-6 de hafnium ) . Le zirconium Kroll d'après nos analyses a un titre de 99,98 % correspondant à ...