SU539845A1 - Method of extracting fluoride ions from solutions or wastewater - Google Patents

Method of extracting fluoride ions from solutions or wastewater

Info

Publication number
SU539845A1
SU539845A1 SU2118490A SU2118490A SU539845A1 SU 539845 A1 SU539845 A1 SU 539845A1 SU 2118490 A SU2118490 A SU 2118490A SU 2118490 A SU2118490 A SU 2118490A SU 539845 A1 SU539845 A1 SU 539845A1
Authority
SU
USSR - Soviet Union
Prior art keywords
fluoride ions
wastewater
solutions
rare
earth
Prior art date
Application number
SU2118490A
Other languages
Russian (ru)
Inventor
Виктор Моисеевич Щепалин
Александр Васильевич Вальков
Алексей Сергеевич Логинов
Владимир Иванович Романенко
Original Assignee
Предприятие П/Я В-2822
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я В-2822 filed Critical Предприятие П/Я В-2822
Priority to SU2118490A priority Critical patent/SU539845A1/en
Application granted granted Critical
Publication of SU539845A1 publication Critical patent/SU539845A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00—Compounds of rare earth metals
    • C01F17/30—Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F17/00—Compounds of rare earth metals
    • C01F17/20—Compounds containing only rare earth metals as the metal element
    • C01F17/247—Carbonates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)

Description

1one

Изобретение относитс  к способу извлечени  ионов фтора из растворов или сточных вод с получением фторидов редкоземельных элементов, которые используют в химической промышленности.This invention relates to a method for extracting fluoride ions from solutions or wastewater to produce rare earth fluorides, which are used in the chemical industry.

Известен способ получени  фторидов -редкоземельных элементов путем обработки их водных расгворов или -карбонатов фтористоводородной кислотой 1.A known method for producing fluorides of α-rare earth elements by treating them with aqueous paragens or carbonates with hydrofluoric acid 1.

Недостаток из)вестного способа - образование желатинообразной, плохо отстаивающейс  и -плохо фильтрующейс  пульпы.The disadvantage of this method is the formation of a gelatinous, poorly settled and poorly filtering pulp.

Известен способ извлечени  ионов фтора из растворов или сточ-ных вод редкоземельного производства путем осаждени  их в виде труднорастворимых соединений при обработке известью с последующим отелением осадка 2.A known method of extracting fluoride ions from solutions or wastewater of rare-earth production by precipitating them as insoluble compounds in the processing of lime, followed by settling of the precipitate 2.

Однако при таком способе мала степень извлечени  ионов фтора и недостаточна очистка раствора. Содержание ионов фтора в очищенном растворе составл ет 0,015-0,020 г/л.However, with this method, the degree of extraction of fluoride ions is low and there is insufficient cleaning of the solution. The fluoride ion content in the purified solution is 0.015-0.020 g / l.

С целью повыщ-ени  степени извлечени  ионов фтора осаждение в-едут при рН 8-9 пульпой карбонато-в редкоземельных элементов , вз той с избытком против стехиометрии на содержание ионов фтора в 10-50 раз, предпочтительно в 20-30 раз.In order to increase the degree of extraction of fluoride ions, precipitation is in-going at a pH of 8-9 with carbonate-in rare-earth pulp, taken with an excess of stoichiometry for the content of fluoride ions 10-50 times, preferably 20-30 times.

Предлагаемый способ позвол ет более полно извлекать ионы фтора. Содержание их в очищенном растворе составл ет 0,001 г/л.The proposed method allows more complete extraction of fluoride ions. Their content in the purified solution is 0.001 g / l.

Пример 1. Раствор, содержащий 0,9 г/л ионов фтора, обрабатывают карбонатной пульпой редкоземельных элементов при -соотношении ее и ионов фтора 20 : 1 при рН раствора 8,0 -в течение 2 час. После фильтрации пульпы концентраци  ионов фтора в фильтрате составл ет 0,001 г/л, степень извлечени  ионов фтора - 99,8%.Example 1. A solution containing 0.9 g / l of fluorine ions is treated with carbonate pulp of rare-earth elements at its ratio and fluoride ions of 20: 1 at a pH of 8.0 for 2 hours. After filtration of the pulp, the concentration of fluoride ions in the filtrate is 0.001 g / l, the degree of extraction of fluoride ions is 99.8%.

Пример 2. Раствор, содержащий 2,1 г/л ио-нов фтора, обрабатывают карбонатной пульпой редкоземельных элементов -при соотнощении ее и ионов фтора 30 : 1 при рН раствора 9,0 в течение 1,5 час. Содержание ионов фтора в фильтрате - 0,001 г/л, степень извлечени -99 ,95%.Example 2. A solution containing 2.1 g / l of fluoride ions is treated with carbonate pulp of rare-earth elements — at a ratio of fluoride ions of 30: 1 at a pH of 9.0 for 1.5 hours. The content of fluoride ions in the filtrate is 0.001 g / l, the recovery rate is -99, 95%.

Claims (2)

Формула изобретени Invention Formula Способ извл-ечени  ионов фтора из растворов или сточных вод редкоземельного производства путем осаждени  их с последующим отделением осадка, отличающийс  тем, что, с целью повыщени  степени извл-ечени  ионов фтора, осаждение ведут при рН 8-9 пульпой карбонатов редкоземельных элементов , вз той iC избытком против стехиометрии 3 на содержание ионов фтора в 10-50 раз, предпочтительно в 20-30 раз. Источники информации, прин тые во внимание при экспертизе изобретени : 1. Спеддинг Ф. X., Данн А. X. Редкоземель-5 4 ные металлы. М., Металлургиздат, 1965, с. 109. The method of extracting fluoride ions from solutions or wastewater of rare-earth production by precipitation followed by separation of sediment, characterized in that, in order to increase the degree of extraction of fluoride ions, the precipitation is carried out at pH 8-9 pulp of carbonates of rare-earth elements taken iC excess versus stoichiometry 3 for the content of fluoride ions is 10-50 times, preferably 20-30 times. Sources of information taken into account in the examination of the invention: 1. Spedding F. X., Dunn A. X. Red-earth-5 4 metals. M., Metallurgizdat, 1965, p. 109. 2. Миловаиов Л. В. Очистка сточных вод предпри тий цветной металлургии. М., 1971, с. 146-149 (етрототип).2. Milovaiov L.V. Wastewater treatment of non-ferrous metallurgy enterprises. M., 1971, p. 146-149 (etrotype).
SU2118490A 1975-03-28 1975-03-28 Method of extracting fluoride ions from solutions or wastewater SU539845A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2118490A SU539845A1 (en) 1975-03-28 1975-03-28 Method of extracting fluoride ions from solutions or wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2118490A SU539845A1 (en) 1975-03-28 1975-03-28 Method of extracting fluoride ions from solutions or wastewater

Publications (1)

Publication Number Publication Date
SU539845A1 true SU539845A1 (en) 1976-12-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU2118490A SU539845A1 (en) 1975-03-28 1975-03-28 Method of extracting fluoride ions from solutions or wastewater

Country Status (1)

Country Link
SU (1) SU539845A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0191893A2 (en) * 1985-02-21 1986-08-27 Asahi Kasei Kogyo Kabushiki Kaisha Process for adsorption treatment of dissolved fluorine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0191893A2 (en) * 1985-02-21 1986-08-27 Asahi Kasei Kogyo Kabushiki Kaisha Process for adsorption treatment of dissolved fluorine
US4717554A (en) * 1985-02-21 1988-01-05 Asahi Kasei Kogyo Kabushiki Kaisha Process for adsorption treatment of dissolved fluorine

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