Uranium exploration and extraction

Directorate-General For Translation European Commission

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R& D programme 1978-1980: Reports on research sponsored under the first phase 1978-1980
Nuclear energy and safety

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• Publié par: EUROPEAN-COMMISSION
• Nombre de lectures: 12
• Langue: English
• Poids de l'ouvrage: 2 Mo

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Commission of the European Communities
nuclear science
and technology
Uranium exploration and extraction
R&D PROGRAMME
Reports on research sponsored under the
first phase: 1978-1980
Report
EUR 7986 EN
Blow-up from microfiche original Commission of the European Communities
nuclear science
and technology
Uranium exploration and extraction
R&D PROGRAMME
Reports on research sponsored under the
first phase: 1978-1980
INDIRECT ACTION
PARL EUROP. Eiblioth.
N. C.
Com. 4S~-?^3
Directorate-General Science, Research and Development
Environment and Raw Materials Research Programmes
1982 EUR 7986 EN Published by the
COMMISSION OF THE EUROPEAN COMMUNITIES
Directorate-General
Information Market and Innovation
Bâtiment Jean Monnet
LUXEMBOURG
LEGAL NOTICE
Neither the Commission of the European Communities nor any person acting
on behalf of then is responsible for the use which might be made of
the following Information
L.3 jp q !
JLÜ
CECSC-EEC-Euratom, Brussels · Luxembourg, 1982 ­ 3 ­
TABLE OF CONTENTS
Page
Foreword
RESEARCH AREA 1: Uranium exploration methods
and techniques
Discovery of uranium provinces
Investigations of uranium concentration processes
and genesis of uranium ore deposits.
I. Wendt, contract n° 001­79­5 EXU D 8
Geochemistry in rocks.ConnectionwithmetalLogenic
potentiality of granitoidsandapplication to uranium
prospection.
P. Leymarie, contract n° 003­79­1EXUF14
Inventory of European uranium series:Permian and
other continental environments.
J.J. Chateauneuf, contract n° 020­79­7 EXU F 19
Application of multichannel gamma detectiontothe
study of the recent alteration conditionsof
European uranium.
K.D. Phan, contract n° 023­79­7 EXU F ■.. 25
Development of a method for detectinguranium'ore
deposits by determination of isotopieLead ratios
in natural waters.
R. Hagemann, contract n° 025 EXU F 32
Development of plasma sourcespectrometryfor rapid
routine isotopie ratioandmultielementanalysis with
particular reference toleadanduraniumin geochemical
exploration.
A.L. Gray, contract n° 012­79­4EXUUK38
Mineralogicei and geochemical criteria for the relation­
ship between granitic magmatism and uranium mineralisation
in the British isles.
P.R. Simpson, contract n° 013­79­1 EXU UK 44 ­4
Page
I2EÍ£_1¿2 5ÍS£2üS£^_2Í_£E££ÍÍÍ£_ü£§DÍSi!!!_Íâ£3ÊÍ2 47
Useofthermoluminescence of superficial formations
in research of radon migration areas, applied to
deep or hidden uranium ores prospection.
J.M. Charlet, contract n° 009­79­9 EXU Β 48
Development and testing of a modelofthesupergene
distribution of uranium and accompanyingelements
around a known m deposit associatedwith an
alkaline intrusion.
J. Rose­Hansen and H. Sørensen, contractn° 016­79­1 EXU DK 54
A technique for radon determinations in soil/overburden
gases based on gamma ray measurements of passive
re­usable radon adsorbing devices.
J.P. McLaughlin, contract n° 015­79 EXU EIR 61
Test programme for development andcalibrationofa
direct measuring system of uraniumcontentinmining
boreholes.
K. Umiastowski, contract n° 004­79­1 EXUF67
Geochemical controls of transport and deposition of
uranium from solution.
C.H. van der Heijden, contract n° 007­79­3 EXU NL 81
l2BÍ£_l¿3 £âiÍ2EâÍÍ2D_2Í_EiíEÍ2ClÍ.Í2D_ítiSI£üü!£Q£atÍ2Q . . 89
Calibration pads for field scintillometers and spectro­
meters.
L. Ldvborg, contract n° 017­79­1 EXU DK 90
RESEARCH AREA 2: Uranium extractionandrecovery
I°EÍ£_2¿1 2ÊüSt2B!!!ÊDÍ_2Í_ÊSl£â£ÍÍ2D_ÈÊ£!!ííÍ9yES 97
Laboratory investigations of refractory uraniumminerals
from the Kvanefjeld uranium deposit, Greenland.
J. Rose­Hansen and H. Sørensen, contract n° 018­79­1 EXU DK 98
Uranium in situ leaching for small granitic deposits.
G. Ranchin, contract n° 005­79 EXU F 106
Pressure and leach studies.
G. Lyaudet, contract n° 024­79­1EXUF113
Togi_c_2i2 E£2£ÊSSÍQ9_2Í_Í2ÍÍZ9£ã2'Ê_2£2£_ED2'_Si£Í££ ■···115­ 5 ­
Page
I2EÍ£_2;1 5££2ÜÊ£2_2Í_yi§QÍüE_Í£2E_Í2S"9£aíi!Ê_£e§2yi££a 117
Recovery of uranium from phosphates and liquors by a
procedure of purification of the uranium coming from
the first extraction cycle.
F. Li evens, contract n° 011 EXU Β 118
Development of adsorbentsfortherecovery of uranium
from sea water.
K. Schwochau, contract n°002­79­1EXUD123
Uranium recovery from «etprocessphosphoric acid.
W. Marconi, contract n° 006­79­1EXUI130
Uranium and heavy metal recovery in the wet­acid phosphoric
acid purification process.
A. van Dalen, contract n° 008­79­7 EXU NL 135
Recovery of uranium as a byproductinEuropean phosphate
rock processing plants.
D.S. Flett, contract n° 014­79­4EXUUK140- 6
Foreword
The Research and Development Programme on Uranium Exploration
and Extraction was adopted by the Council of the European Communities on
March 6, 1978 for a three year period (1978-1980) and, by decision of
the Council on April 28, 1981 , extended to a five year period (1978-
1982). The total budget amounts to 5.4 Mio ECU with 3 Mio ECU alloted to
the first phase (1978-1980). L
The objective of the Community's R8D actions in this field is
to contribute to increasing its self-supply potential in uranium as well
as to develop techniques to be used by Community industry in its world­
wide operations. Together with other actions such as, for instance, those
concerned with the promotion of uranium exploration in the Community, based
on Article 70 of the Euratom Treaty, they must facilitate the solution of
uranium supply problems.
The need to finance R8D should be seen in the light of the Com­
munity's expanding requirements for natural uranium. More advanced uranium
exploration methods and uranium extraction and recovery technology must be
developed to discover new deposits as well as to evaluate and exploit
potential uranium resources.
The programme is implemented in two phases, the first one ended
on December 31, 1980. It includes two research areas:
1. Uranium exploration methods and techniques
2. Uranium extraction and recovery.
This volume contains the summary reports on the research carried
out under cost-sharing contracts during the first phase of the programme.
The texts of the reports are reproduced as they were submitted by the con­
tractors.
*) 0J n° L 72, 14.3.1978
**) 0J n° L 137, 23.5.1981 - 7 -
Topic 1.1
DISCOVERY OF URANIUM PROVINCES 8 -
Contractor : Federal Institute for Geosciences and Natural
Resources, Stilleweg 2, D-3000 Hannover 51
Contract no.: 001-79-5 EXUD
Project Leader: Dr. I. Wendt, Director and Professor
Title of project: Investigations of Uranium concentration
processes and genesis of Uranium ore deposits
Objective of the research
1. Detailed investigation of some selected uranium deposits
typical for the NE-Bavarian basement in order to
- develop a model of uranium deposition and ore formation
in this area wherem exploration has started
recently,
- establish geochemical correlations with other elements
which may be used as pathfinder elements,
- find geological and mineralogical phenomena which may be
used as ore guides, e.g. alteration, fracturaţi on.
2. Compilation of all available data on economic geology of
uranium of NE-Bavaria to establish interrelations between
the different uranium provinces of the European Hercynian
orogenes.
Materials and methods
Materi al s: Samples of rocks and ore from diamond drillcores
and underground sampl ing,soi 1 and water samples.
Analytical methods:
1. Pétrographie microscopy (220 thin sections investigated),
2. Ore microscopy (100 polished sections ,
3. X-ray powder diffraction and single crystal analyses
(320 samples and 15 Gandolfi runs),
4. Heavy mineral analysis and mineral separation (220 samples),
5. Microprobe analysis (15 samples),
6. Geochemistry: RFA, AAS (^ 200 samples),
7. α-spectrometry for disequilibrium studies (<v 80 samples),