Method of treating sea water

• US 2,934,419 A
• Filed: 09/19/1955
• Issued: 04/26/1960
• Est. Priority Date: 09/19/1955
• Status: Expired due to Term

• Current Assignee: Vernice Cook
• Original Assignee: Vernice Cook
• Inventors: Cook, Vernice
• Application Number:
  US03/535,205
• Time in Patent Office: 1,681 Days
• US Class Current: 71/1
• CPC Class Codes: C01D 3/06 Preparation by working up brines; seawater or spent lyes
• CPC Class Codes: C01F 5/22 from magnesium compounds with alkali hydroxides or alkaline- earth oxides or hydroxides
• CPC Class Codes: C05D 9/02 containing trace elements

Claims

1. A METHOD FOR THE RECOVERY AND CONCENTRATION OF CHEMICAL ELEMENTS FROM A SAMPLE OF SEA WATER COMPRISING A SUBSTANTIAL AMOUNT OF SODIUM CHLORIDE AND MAGNESIUM AND CALCIUM IONS AND HAVING DISSOLVED AND SUSPENDED THEREIN AS TRACE ELEMENTS PHOSPHOROUS, ALUMINUM, STRONTIUM, SILICON, BORON, IRON, MANGANESE, NICKEL, COPPER AND TIN, COMPRISING THE STEPS OF ADDING TO THE SAMPLE OF SEA WATER A QUANTITY OF A MTERERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE, SAID MATERIAL HYDROLYZING IN SEA WATER AND YIELDING HYDROXYL IONS WHICH COMBINE WITH SAID MAGNESIUM TO FORM A MAGNESIUM HYDROXIDE PRECIPITATE, AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM CARBONATE AND POTASSIUM CARBONATE, SAID LAST MENTIONED MATERIAL HYDROLYZING IN SAID SEA WATER AND YIELDING CARBONATE IONS WHICH COMBINE WITH THE CALCIUM IN THE SEA WATER TO FORM A CALCIUM CARBONATE PRECIPITATE, SAID MAGNESIUM HYDROXIDE AND CALCIUM CARBONATE PRECIPITATES ADSORBING A SUBSTANTIAL AMOUNT OF DISSOLVED AND SUSPENDED TRACE ELEMENTS IN THE SEA WATER AND ADSORBING AND ABSORBING SODIUM CHLORIDE, THEREAFTER SEPARATING SAID PRECIPTATES FROM SAID SEA WATER, THEN WASHING THE PRECIPITATES WITH FRESH WATER TO REMOVE SAID SODIUM CHLORIDE, AND THEN DRYING THE PRECIPITATES CONTAINING SAID TRACE ELEMENTS.