Concentration of underground brines in situ by solar evaporation
Patent 3966541 Issued on June 29, 1976. Estimated Expiration Date: 
June 29, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 29, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1353283 1892760 2161800 2388009 2994200 3037849 3386768 InventorApplicationNo. 551395 filed on 02/20/1975US Classes:159/47.1, PROCESSES159/903, Solar23/295S, Solar23/302R, Alkali metal and ammonium compounds23/302T, Sodium compounds23/303, Common salt299/4, Input and output wells405/58, Dissolving earth422/288, Including means removing vapor from treated material423/186CarbonatingExaminersPrimary: Bascomb, Wilbur L. Jr.Assistant: Emery, S. J. Attorney, Agent or FirmAbstractA process is provided for the recovery of chemicals, such as chlorides, sulfates, carbonates and borates of such alkali metals as sodium and potassium, among others, from underground brines associated with an ore body containing said chemicals, wherein the underground brine is pumped to the surface and confined over said ore body where it is concentrated by solar evaporation and the concentrated brine returned to an underground basin adjacent said ore body and stored for later removal by pumping for the subsequent recovery of chemicals therefrom. Thus, solar evaporation is used to produce the desired concentration of brine to optimize the subsequent recovery of chemicals therefrom, thereby resulting in substantial savings in overall energy costs. |
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