Significance of Mineralogy in the Development of Flowsheets for Processing Uranium Ores

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A Study of Some Methods of Concentrating Uranium and Radium in Carnotite Ore

Scholars' Mine Masters Theses Student Theses and Dissertations 1932 A study of some methods of concentrating uranium and radium in carnotite ore H. L. Gibbs Follow this and additional works at: https://scholarsmine.mst.edu/masters_theses Part of the Chemical Engineering Commons Department: Recommended Citation Gibbs, H. L., "A study of some methods of concentrating uranium and radium in carnotite ore" (1932). Masters Theses. 4815. https://scholarsmine.mst.edu/masters_theses/4815 This thesis is brought to you by Scholars' Mine, a service of the Missouri S&T Library and Learning Resources. This work is protected by U. S. Copyright Law. Unauthorized use including reproduction for redistribution requires the permission of the copyright holder. For more information, please contact [email protected]. A STUDY OF SOl.ill T,::ETHODS O:B" COl1C}~;TTRl~TnTG TJP"':~..1TTIJL! ;:J·TD RIillIOIJ IN C.AR~OTIT!~ ORE. by lliJ10LD L. GIBBS A THESIS submitted to the faculty of the SCI-TOOL OF MINES AND 1~'IETIJ:.,LURGY OF THE m·...lVERSITY OJ!' I'~IaSOURI in partial fulfillment of the work required for the Degree of' Ivll~T:ER OF SCIENCE n~ C:EIa1IC.AL ENGnmERnTG Rolla, ~~iissour1 1 9 3 2 Al'proved by f.A.J. -,. ~ Acknowledgments • • • • • • • 1 Object • • ••• • • • 2 Introduction • • • 2 Description of the Ore • • • 3 Examination o~ the Ore • • • • • 3 Methods of Analysis • • • • • • 7 Flocculation Tests • • • g Flotation of Carnotite • • • • • II Results of Flotation Testa • • • • 15 Recovery of Radium :rrom Leached Ore by Flotation • • • • 18 Summary
Curbing Illicit Mercury and Gold Flows in West Africa: Options for a Regional Approach

Curbing Illicit Mercury and Gold Flows in West Africa: Options for a Regional Approach i INCLUSIVE AND SUSTAINABLE INDUSTRIAL DEVELOPMENT ii Curbing Illicit Mercury and Gold Flows in West Africa: Options for a Regional Approach iii November 2018 iv © UNIDO 2018. All rights reserved. This document has been produced without formal United Nations editing. The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of the Secretariat of the United Nations Industrial Development Organization (UNIDO) concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries, or its economic system or degree of development. Designations such as ‘developed’, ‘industrialized’ or ‘developing’ are intended for statistical convenience and do not necessarily express a judgement about the stage reached by a particular country or area in the development process. Mention of firm names or commercial products does not constitute an endorsement by UNIDO. Unless otherwise men- tioned, all references to sums of money are given in United States dollars. References to ‘tons’ are to metric tons, unless otherwise stated. All photos © UNIDO unless otherwise stated. Cover photo by Sadibou Sylla Acknowledgements This report was authored by Marcena Hunter of the Global Initiative Against Transnational Organized Crime. The report is part of the United Nations Industrial Development Organization (UNIDO) project, funded by the Government of Switzerland, to assist the Economic Community of West African States (ECOWAS) in its early implementation of the Minamata Convention. More information about the Minamata Convention and UNIDO’s work can be found on UNIDO’s website <https://www.unido.org/mercury> or by emailing Gabriela Eigenmann at [email protected].
Roscoelite K(V ; Al; Mg)2Alsi3o10(OH)2 C 2001 Mineral Data Publishing, Version 1.2 ° Crystal Data: Monoclinic

3+ Roscoelite K(V ; Al; Mg)2AlSi3O10(OH)2 c 2001 Mineral Data Publishing, version 1.2 ° Crystal Data: Monoclinic. Point Group: 2=m: As minute scales, in druses, rosettes, or fan-shaped groups; ¯brous and in felted aggregates; as impregnations, massive. Physical Properties: Cleavage: Perfect on 001 . Hardness = Soft. D(meas.) = 2.92{2.94 D(calc.) = [2.89] f g Optical Properties: Transparent to translucent. Color: Dark clove-brown, greenish brown to dark greenish brown. Luster: Pearly. Optical Class: Biaxial ({). Pleochroism: X = green-brown; Y = Z = olive-green. ® = 1.59{1.610 ¯ = 1.63{1.685 ° = 1.64{1.704 2V(meas.) = 24.5±{39.5± Cell Data: Space Group: C2=c: a = 5.26 b = 9.09 c = 10.25 ¯ = 101:0± Z = 2 X-ray Powder Pattern: Paradox Valley, Colorado, USA. 10.0 (100), 4.54 (80), 3.35 (80), 2.60 (80), 1.52 (60), 3.66 (50), 3.11 (50) Chemistry: (1) SiO2 47.82 Al2O3 12.60 V2O5 19.94 FeO 3.30 MgO 2.43 CaO trace Na2O 0.33 K2O 8.03 + H2O 5.13 Total 99.58 (1) Stuckslager mine, California, USA. Polymorphism & Series: Forms a series with muscovite; 1M polytype. Mineral Group: Mica group. Occurrence: An early-stage gangue mineral in low-temperature epithermal Au-Ag-Te deposits; from the oxidized portions of low-temperature sedimentary U-V ores. Association: Quartz, pyrite, carbonates, °uorite, gold (Au-Ag-Te mineral association); corvusite, hewettite, carnotite, tyuyamunite (U-V mineral association). Distribution: In the USA, from the Stuckslager mine, Lotus, El Dorado Co., California; in Colorado, from Cripple Creek, Teller Co., La Plata district, La Plata Co., Magnolia district, Boulder Co., the Gateway district, Mesa Co., in the Uravan and Paradox, Bull Canyon, and Slick Rock districts, in Montrose, San Miguel, and Dolores Cos.
S Ndlovu (PDF)

Extraction of Gold Then, Now and the Future Prof Sehliselo Ndlovu DST/NRF SARChI: Hydrometallurgy and Sustainable Development University of the Witwatersrand, Johannesburg Building a Robust Minerals Industry 3 – 4 July 2017, Cresta Lodge, Harare University of the Witwatersrand Johannesburg Founded Oct. 1896: School of Mines Approx. 37 000 Students 5 Faculties, 33 Schools, 3610 Courses >160 000 Degrees Conferred since 1922 55% Female Students 10 National Centres of Excellence Home to the Bidvest Football Club( Current PSL league Champions) Evolution in Gold Processing Past Technologies • Amalgamation • Panning Current Technologies • Cyanide leaching • Processing of Emerging and Future refractory ores Technologies • Bio-oxidation • Ionic liquids • Alternative leaching • Ultrasonic leaching reagents • Corn starch?? Past Technologies Used in Ancient Times History of gold extends back at least 6,000 years. Egypt and Mesopotamia around 4000 BC. Gravity Separation: Gold Panning Gold concentrated by washing lighter river sands with water Leaves dense gold particles Alternative- wash gold-bearing sand and gravel over a woollen fleece Traps heavier gold dust that would sink into the wool fibres. Advantages • Simplicity Disadvantages • Labour intensive Gravity Separation: Sluicing • Water is channelled to flow through a sluice-box. • Sluice-box is essentially a man-made channel with riffles (barriers) at the bottom. • Riffles create dead-zones in the water current which allows gold to drop out of suspension. Sluicing and panning results in the direct recovery of small gold nuggets and flakes. Gold Parting: Salt Cementation Process • Invented to remove Ag from Au-Ag mixtures around 6th century BC. Mix: argentiferous gold foil, common salt, brick dust or burnt clay and urine in a sealed container.
Mineral Processing

Mineral Processing Foundations of theory and practice of minerallurgy 1st English edition JAN DRZYMALA, C. Eng., Ph.D., D.Sc. Member of the Polish Mineral Processing Society Wroclaw University of Technology 2007 Translation: J. Drzymala, A. Swatek Reviewer: A. Luszczkiewicz Published as supplied by the author ©Copyright by Jan Drzymala, Wroclaw 2007 Computer typesetting: Danuta Szyszka Cover design: Danuta Szyszka Cover photo: Sebastian Bożek Oficyna Wydawnicza Politechniki Wrocławskiej Wybrzeze Wyspianskiego 27 50-370 Wroclaw Any part of this publication can be used in any form by any means provided that the usage is acknowledged by the citation: Drzymala, J., Mineral Processing, Foundations of theory and practice of minerallurgy, Oficyna Wydawnicza PWr., 2007, www.ig.pwr.wroc.pl/minproc ISBN 978-83-7493-362-9 Contents Introduction ....................................................................................................................9 Part I Introduction to mineral processing .....................................................................13 1. From the Big Bang to mineral processing................................................................14 1.1. The formation of matter ...................................................................................14 1.2. Elementary particles.........................................................................................16 1.3. Molecules .........................................................................................................18 1.4. Solids................................................................................................................19
Page 1 of 9 SAFETY DATA SHEET CARNOTITE ORE SECTION 1

SAFETY DATA SHEET CARNOTITE ORE SECTION 1: CHEMICAL PRODUCTS & COMPANY IDENTIFICATION NBL Program Office U. S. Department of Energy, 1 Science.gov Way, Oak Ridge, TN 37830 1-865-576-0598 Emergency Phone Numbers: 1-865-576-0598 Substance: Carnotite Ore Blend Trade Names/Synonyms: Potassium uranium vanadate, Uranium Oxide (U3O8), Uranous Oxide, Triuranium Octaoxide, Uranite Nasturan, CRM 4, CRM 5 Use and Restriction: This material is prepared for use as a standard or for inter- laboratory comparison programs at analytical laboratories, which routinely handle uranium and/or plutonium. NBL expects that recipients of their material are in compliance with 29 CFR 1910.1200(h) which requires employers to provide employees with effective information and training in hazardous chemicals in their work area. SECTION 2: HAZARDS IDENTIFICATION OSHA Hazards Toxic by inhalation, toxic by ingestion. Target Organs Kidney, Liver, Lungs, Brain. GHS Label Elements Pictogram Signal Word: Danger Page 1 of 9 Hazard Statements: Toxic by inhalation and ingestion Danger of cumulative effects May damage kidneys Precautionary Statements: Avoid Breathing Dust Avoid contact with skin, eyes and clothing When using do not eat, drink or smoke In case of accident or if you feel unwell seek medical advice immediately Use only with adequate ventilation GHS Classification Skin Irritation (Category 2) Eye Irritation (Category 2) Specific target organ toxicity - repeated exposure (Category 2) Specific target organ toxicity – acute exposure (Category 2) GHS Hazard Ratings R23/25: Toxic by inhalation and ingestion R33: Danger of cumulative effects S20/21: When using do not eat, drink or smoke S45: In case of accident or if you feel unwell seek medical advice immediately S61: Avoid release to the environment.
Uraninite Alteration in an Oxidizing Environment and Its Relevance to the Disposal of Spent Nuclear Fuel

TECHNICAL REPORT 91-15 Uraninite alteration in an oxidizing environment and its relevance to the disposal of spent nuclear fuel Robert Finch, Rodney Ewing Department of Geology, University of New Mexico December 1990 SVENSK KÄRNBRÄNSLEHANTERING AB SWEDISH NUCLEAR FUEL AND WASTE MANAGEMENT CO BOX 5864 S-102 48 STOCKHOLM TEL 08-665 28 00 TELEX 13108 SKB S TELEFAX 08-661 57 19 original contains color illustrations URANINITE ALTERATION IN AN OXIDIZING ENVIRONMENT AND ITS RELEVANCE TO THE DISPOSAL OF SPENT NUCLEAR FUEL Robert Finch, Rodney Ewing Department of Geology, University of New Mexico December 1990 This report concerns a study which was conducted for SKB. The conclusions and viewpoints presented in the report are those of the author (s) and do not necessarily coincide with those of the client. Information on SKB technical reports from 1977-1978 (TR 121), 1979 (TR 79-28), 1980 (TR 80-26), 1981 (TR 81-17), 1982 (TR 82-28), 1983 (TR 83-77), 1984 (TR 85-01), 1985 (TR 85-20), 1986 (TR 86-31), 1987 (TR 87-33), 1988 (TR 88-32) and 1989 (TR 89-40) is available through SKB. URANINITE ALTERATION IN AN OXIDIZING ENVIRONMENT AND ITS RELEVANCE TO THE DISPOSAL OF SPENT NUCLEAR FUEL Robert Finch Rodney Ewing Department of Geology University of New Mexico Submitted to Svensk Kämbränslehantering AB (SKB) December 21,1990 ABSTRACT Uraninite is a natural analogue for spent nuclear fuel because of similarities in structure (both are fluorite structure types) and chemistry (both are nominally UOJ. Effective assessment of the long-term behavior of spent fuel in a geologic repository requires a knowledge of the corrosion products produced in that environment.
Lord Hill Quarry Town: Stoneham, Ox Ford County Base Map: Cen Ter Lovell 7.5’ Quadran Gle Con Tour in Ter Val: 20 Feet

Lord Hill Quarry Town: Stoneham, Ox ford County Base map: Cen ter Lovell 7.5’ quadran gle Con tour in ter val: 20 feet Type of de posit: Gran ite peg matite. strunzite, to paz, torbernite/metatorbernite, triphylite(?), triplite, uraninite, uranophane, vivian it e, zircon (var. cyrtolite). Col lect ing sta tus: Locat ed in the White Mountai n Nati onal Forest . No perm ission is needed to collec t miner als here. How- Com ments: Lord Hill is one of the fa vor ite col lect ing sites in ever, collec ting must be non com mercia l, done with hand tools, Maine, offer ing a va riety of miner als and White Mountai n scen - and not greatly disturb the mine area. ery. The best-known finds from this local ity in clude large crys- tals of white topaz, and smoky quartz crystal s encrust ed by many Min er als ob served: albit e, almandine (garnet) , autun- small phenakite crys tals. Most col lect ing ac tiv ity ap pears to ite/meta-autun ite, beraunite, bermanite, beryllonite, bertrandite, have oc curred in the larger of the two quarry pits, al though a ma- beryl, bi o tite, bis muth, bis muthi nite, bismutite, cas sit er ite, jor pocket contai n ing smoky quartz and fluorapatite crystal s was columbite, cryptomelane, damourite, elbaite (tour maline) , opened in the floor of the smaller pit in 1991. The pieces of topaz eosphorite, fluorapatite, fluo rite, gahnite, goethite com monly found here are disti n guished by their bluish-whi te (pseudomorphic after pyrit e), goyazite, heterosite, hureaulite, color (es pe cially when wet), sin gle cleav age di rec tion, and hydroxylapatite, hydroxyl-herderite, microcline, microlite, higher den sity than sim i lar-look ing peg ma tite min er als.
Weeksite K2(UO2)2(Si5o13)·4H2O

Weeksite K2(UO2)2(Si5O13)·4H2O Crystal Data: Monoclinic. Point Group: 2/m: As bladed or acicular crystals, flattened on {010} and elongated along [001], and as flat plates; also as spherulites and radiating fibrous clusters. - Twinning: By two-fold rotation around [401 ]. Physical Properties: Cleavage: Two good prismatic cleavages noted. Hardness = < 2 D(meas.) = ~ 4.1 D(calc.) = 3.80 Radioactive. Optical Properties: Transparent to translucent. Color: Yellow. Luster: Waxy to silky. Optical Class: Biaxial (-). α = 1.596 β = 1.603 γ = 1.606 2V(meas.) = ~ 60° 2V(calc.) = 66° Pleochroism: X = colorless, Y = pale yellow-green, Z = yellow-green. Dispersion: r > v, strong. Orientation: X = b, Y = c, Z = a. Cell Data: Space Group: C2/m. a = 14.26(2) b = 35.88(10) c = 14.20(2) β = 111.578(3)° Z = 4 X-ray Powder Pattern: Thomas Range, Utah, USA. 7.11 (10), 5.57 (9), 8.98 (8), 3.55 (7), 3.30 (7), 2.91 (6), 3.20 (5) Chemistry: (1) (1) Na2O 0.53 Al2O3 0.6 K2O 4.73 SiO2 29.44 CaO 0.67 UO3 55.78 BaO 3.11 H2O [7.02] MgO 0.18 Total 101.28 SrO 0.20 (1) Anderson mine, Arizona, USA; average of 8 electron microprobe analyses, supplemented by TGA, H2O calculated from structure, corresponds to (K1.031Na0.176Ca0.123Ba0.208)Σ=1.537(UO2)2.002 (Si5.030O13)·4H2O. Occurrence: In “opal" veinlets in rhyolite, agglomerates, sandstones and limestones. Association: “Opal," “chalcedony," calcite, gypsum, fluorite, uraninite, thorogummite, uranophane, boltwoodite, carnotite, margaritasite. Distribution: In the USA, in Utah, at the Autunite No.
Recovery of Gold and Iron from Cyanide Tailings with a Combined Direct Reduction Roasting and Leaching Process

metals Article Recovery of Gold and Iron from Cyanide Tailings with a Combined Direct Reduction Roasting and Leaching Process Pingfeng Fu 1,2,* ID , Zhenyu Li 1, Jie Feng 1 and Zhenzhong Bian 1 1 School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China; [email protected] (Z.L.); [email protected] (J.F.); [email protected] (Z.B.) 2 Key Laboratory of High-Efﬁcient Mining and Safety of Metal Mines, Ministry of Education, Beijing 100083, China * Correspondence: [email protected]; Tel.: +86-10-6233-2902 Received: 25 June 2018; Accepted: 19 July 2018; Published: 21 July 2018 Abstract: Cyanide tailings are the hazardous waste discharged after gold cyanidation leaching. The recovery of gold and iron from cyanide tailings was investigated with a combined direct reduction roasting and leaching process. The effects of reduction temperature, coal dosage and CaO dosage on gold enrichment into Au-Fe alloy (FexAu1−x) were studied in direct reduction roasting. Gold containing iron powders, i.e., Au-Fe alloy, had the gold grade of 8.23 g/t with a recovery of 97.46%. After separating gold and iron in iron powders with sulfuric acid leaching, ferrous sulfate in the leachate was crystallized to prepare FeSO4·7H2O with a yield of 222.42% to cyanide tailings. Gold enriched in acid-leaching residue with gold grade of 216.58 g/t was extracted into pregnant solution. The total gold recovery of the whole process reached as high as 94.23%. The tailings generated in the magnetic separation of roasted products, with a yield of 51.33% to cyanide tailings, had no toxic cyanide any more.
Seznam Publikací Wos Q1 a Q2

Přehled publikací pracovníků/studentů ÚGV PřF MU Brno v časopisech 1./2. kvartilu v období 2003-2021 2021 (celkem 22 článků, 7 studentů spoluautorů – červeně) Adameková, K., Lisá, L., Neruda, P., Petřík, J., Doláková, N., Novák, J., Volánek, J. (2021): Pedosedimentary record of MIS 5 as an interplay of climatic trends and local conditions: Multi-proxy evidence from the Palaeolithic site of Moravský Krumlov IV (Moravia, Czech Republic). Catena, 200, 105174. doi: 10.1016/j.catena.2021.105174 WoS: IF2020: 5,198; Q1 (12/98) in Water Resources; Q1 (7/37) in Soil Science; Q1 (22/199) in Geosciences, Multidisciplinary; počet citací: 1 Bábek, O., Kumpan, T., Calner, M., Šimíček, D., Frýda, J., Holá, M., Ackerman, L., Kolková, K. (2021): Redox geochemistry of the red „orthoceratite limestone“ of Baltoscandia: Possible linkage to mid-ordoviian palaeoceanographic changes. Sedimentary Geology, 420, 105934. doi: 10.1016/j.sedgeo.2021.105934 WoS: IF2020: 3,397; Q1 (7/48) in Geology; počet citací: 0 Bonilla-Salomón, I., Čermák, S., Luján, Á.H., Horáček, I., Ivanov, M., Sabol, M. (2021): Early Miocene small mammals from MWQ1/2001 Turtle Joint (Mokrá-Quarry, South Moravia, Czech Republic): biostratigraphical and palaeoecological considerations. Bulletin of Geosciences, 96, 1, 99–122. WoS: IF2020: 1,600; Q2 (27/57) in Paleontology; Q4 (157/199) in Geosciences, Multidisciplinary; počet citací: 0 Březina, J., Alba, D.M., Ivanov, M., Hanáček, M., Luján, Á.H. (2021): A middle Miocene vertebrate assemblage from the Czech part of the Vienna Basin: Implications for the paleoenvironments of the Central Paratethys. Palaeogeography, Palaeoclimatology, Palaeoecology, 575, 110473. WoS: IF2020: 3,318; Q2 (21/50) in Geography, Physical; Q1 (2/54) in Paleontology; Q2 (74/199) in Geosciences, Multidisciplinary; počet citací: 0 Čopjaková, R., Prokop, J., Novák, M., Losos, Z., Gadas, P., Škoda, R., Holá, M.
Iidentilica2tion and Occurrence of Uranium and Vanadium Identification and Occurrence of Uranium and Vanadium Minerals from the Colorado Plateaus

IIdentilica2tion and occurrence of uranium and Vanadium Identification and Occurrence of Uranium and Vanadium Minerals From the Colorado Plateaus c By A. D. WEEKS and M. E. THOMPSON A CONTRIBUTION TO THE GEOLOGY OF URANIUM GEOLOGICAL S U R V E Y BULL E TIN 1009-B For jeld geologists and others having few laboratory facilities.- This report concerns work done on behalf of the U. S. Atomic Energy Commission and is published with the permission of the Commission. UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1954 UNITED STATES DEPARTMENT OF THE- INTERIOR FRED A. SEATON, Secretary GEOLOGICAL SURVEY Thomas B. Nolan. Director Reprint, 1957 For sale by the Superintendent of Documents, U. S. Government Printing Ofice Washington 25, D. C. - Price 25 cents (paper cover) CONTENTS Page 13 13 13 14 14 14 15 15 15 15 16 16 17 17 17 18 18 19 20 21 21 22 23 24 25 25 26 27 28 29 29 30 30 31 32 33 33 34 35 36 37 38 39 , 40 41 42 42 1v CONTENTS Page 46 47 48 49 50 50 51 52 53 54 54 55 56 56 57 58 58 59 62 TABLES TABLE1. Optical properties of uranium minerals ______________________ 44 2. List of mine and mining district names showing county and State________________________________________---------- 60 IDENTIFICATION AND OCCURRENCE OF URANIUM AND VANADIUM MINERALS FROM THE COLORADO PLATEAUS By A. D. WEEKSand M. E. THOMPSON ABSTRACT This report, designed to make available to field geologists and others informa- tion obtained in recent investigations by the Geological Survey on identification and occurrence of uranium minerals of the Colorado Plateaus, contains descrip- tions of the physical properties, X-ray data, and in some instances results of chem- ical and spectrographic analysis of 48 uranium arid vanadium minerals.