The Rare Earths
Their Occurrence, Chemistry, and Technology
S. I. Levy
The Rare Earths Their Occurrence, Chemistry, and Technology
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THE RARE EARTHS
PREFACE
CONTENTS
TABLE OF ABBREVIATIONS EMPLOYED IN THE REFERENCES
INTRODUCTION By Sir William Crookes, O.M., F.E.S.
PART I OCCURRENCE OF THE RARE EARTHS
CHAPTER I THE NATURE OF THE MINERALS AND THEIR MODE OF OCCURRENCE
Alphabetical List of Minerals containing Titanium, Zirconium, Thorium, or Elements of the Cerium and Yttrium Groups.
CHAPTER II THE SILICATES
(a) Silicates of the Yttrium and Cerium Metals
(b) Silicates of Thorium and Zirconium
(c) Complex Silicates
CHAPTER III THE TITANO-SILICATES AND TITANATES
(a) The Titano-Silicates
(b) The Titanates
CHAPTER IV THE TANTALO-COLUMBATES
(a) Tantalo-Columbates containing no Titanium Dioxide
(b) Tantalo-Columbates containing Titanium Dioxide
CHAPTER V THE OXIDES AND CARBONATES
(a) The Oxides
(b) The Carbonates
CHAPTER VI THE PHOSPHATES AND HALIDES
(a) The Phosphates
(b) The Halides
CHAPTER VII THE MONAZITE SANDS
The North American Deposits[119]
The Brazilian Deposits
CHAPTER VIII RADIOACTIVITY OF THE MINERALS
PART II THE CHEMISTRY OF THE ELEMENTS
CHAPTER IX GENERAL PROPERTIES OF THE CERIUM AND YTTRIUM GROUPS
The Rare Earth Elements, and the Periodic Classification
CHAPTER X GENERAL METHODS OF SEPARATION
Extraction of the Rare Earths from Minerals
The Spectrum Examination
The Equivalent Weight Determination
CHAPTER XI THE CERIUM GROUP—CERIUM
Cerium, Ce = 140·25
CHAPTER XII CERIUM GROUP (continued)
Lanthanum, Praseodymium, Neodymium, and Samarium
Separation
Lanthanum, La = 139·0
Praseodymium, Pr = 140·6
Neodymium, Nd = 144·3.
Samarium, Sa = 150·4
CHAPTER XIII THE TERBIUM GROUP
Separation
Europium, Eu = 152·0
Gadolinium, Gd = 157·3.
Terbium, Tb = 159·2
CHAPTER XIV THE ERBIUM AND YTTERBIUM GROUPS—YTTRIUM AND SCANDIUM
Separation
The Erbium Group
CHAPTER XV THE GROUP IVA ELEMENTS—TITANIUM
Titanium, Ti = 48·1
CHAPTER XVI THE GROUP IVA ELEMENTS (continued)—ZIRCONIUM AND THORIUM
Zirconium, Zr = 90·6
Thorium, Th = 232·4
PART III THE TECHNOLOGY OF THE ELEMENTS
CHAPTER XVII THE INCANDESCENT MANTLE INDUSTRY—HISTORICAL AND GENERAL INTRODUCTION
CHAPTER XVIII THE CHEMICAL TREATMENT OF MONAZITE
CHAPTER XIX THE MANUFACTURE OF MANTLES FROM COTTON AND RAMIE
Washing.
Impregnation.
The Mantle Head.
Burning off and Shaping.
Collodinisation.
CHAPTER XX ARTIFICIAL SILK—ITS PRODUCTION AND USE IN THE MANTLE INDUSTRY
Chardonnet Process.
The Pauly or Cuprammonium Process.
The Viscose Process.
The Acetate Process.
The Manufacture of Mantles from Artificial Silk.
Impregnation.
‘Fixing.’
The Final Stages.
CHAPTER XXI OTHER TECHNOLOGICAL USES OF THE CERIUM AND YTTRIUM ELEMENTS, ZIRCONIUM AND THORIUM
The Cerium Group
Other Alloys.
Industrial Applications of Zirconium
The Technical Uses of Zirconia.
CHAPTER XXII THE INDUSTRIAL APPLICATIONS OF TITANIUM AND ITS COMPOUNDS
Employment of the Element in Metallurgy.
Application to Arc-lamp Electrodes.
Titanium Compounds in Dyeing and Colouring.
Other Uses of Titanium Compounds.
Estimation of the Element.
INDEX
Transcriber’s Notes
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