C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
C01D3/00—Halides of sodium, potassium or alkali metals in general
C01D3/04—Chlorides
C01D3/08—Preparation by working up natural or industrial salt mixtures or siliceous minerals
B—PERFORMING OPERATIONS; TRANSPORTING
B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS