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Process for Calcum Fluoride Production from Industrial Waste Waters Background of the Invention
| Content Provider | Semantic Scholar |
|---|---|
| Author | De, Turckheim Grégoire Jonghe |
| Copyright Year | 2017 |
| Abstract | OTHER PUBLICATIONS Kirk-Othmer, Encyclopedia of Chemical Technology, Second Edition, vol. 4, Interscience Publishers, (1964), pp. 368, 369. Primary Examiner-Edward J. Meros Assistant Examiner-Wayne A. Langel Attorney, Agent, or Firm-D. A. Newell; T. G. De Jonghe; C. J. Caroli 57 ABSTRACT A process for the preparation of calcium fluoride from industrial waste waters which comprises treatment of the waste waters with potassium hydroxide, followed by lime precipitation, neutralization with carbon diox ide and filtration to provide the calcium fluoride prod uct. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://patentimages.storage.googleapis.com/62/94/c9/c2ea88d569380d/US4414185.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Patent |