RO83249B1 - Process for the recovery of zinc from effluents and from industrial liquors resulting on the fabrication of viscose-type cord fibres - Google Patents

Process for the recovery of zinc from effluents and from industrial liquors resulting on the fabrication of viscose-type cord fibres

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Publication number
RO83249B1
RO83249B1 RO106310A RO10631082A RO83249B1 RO 83249 B1 RO83249 B1 RO 83249B1 RO 106310 A RO106310 A RO 106310A RO 10631082 A RO10631082 A RO 10631082A RO 83249 B1 RO83249 B1 RO 83249B1
Authority
RO
Romania
Prior art keywords
zinc
viscose
effluents
fabrication
recovery
Prior art date
Application number
RO106310A
Other languages
Romanian (ro)
Other versions
RO83249A2 (en
Inventor
Nicolae Ghetie-Frank
Viorica Nistreanu
Original Assignee
Institutul De Cercetari Si Proiectari Pentru Gospodarirea Apelor
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 Institutul De Cercetari Si Proiectari Pentru Gospodarirea Apelor filed Critical Institutul De Cercetari Si Proiectari Pentru Gospodarirea Apelor
Priority to RO106310A priority Critical patent/RO83249B1/en
Publication of RO83249A2 publication Critical patent/RO83249A2/en
Publication of RO83249B1 publication Critical patent/RO83249B1/en

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Abstract

Procedeul de recuperare a zincului din ape uzate si din solutii tehnologice provenite de la fabricarea fibrelor de vîscoza tip cord, conform inventiei consta în aceea ca, dupa colectarea separata a surselor concentrate în saruri de zinc acestea sunt supuse precipitarii cu hidroxidul de sodiu rezidual avînd circa 230 kg/m sa puterea 3 NaOH, la o temperatura de 80....90 degree C si pîna la un pH de 10,5....10,7 si apoi precipitatul obtinut este supus deshidratarii, prin îngrosare gravitationala ti mecanica, suspensia îngrosata sau turta dizolvîndu-se în acid sulfuric sau în baia de coagulare în exces, cu continutul în acid sulfuric corectat corespunzator.The process for recovering zinc from waste water and technological solutions from the production of cord viscose fibers according to the invention consists in that after separate collection of the concentrated sources in zinc salts these are subjected to precipitation with the residual sodium hydroxide having about 230 kg / m is the power 3 NaOH at a temperature of 80 ... 90 ° C and up to a pH of 10.5 ... 10.7 and then the precipitate obtained is dehydrated by gravitational and mechanical agglomeration , the thickened suspension or cake dissolving in sulfuric acid or excess coagulation bath with the corresponding corrected sulfuric acid content.

RO106310A 1982-01-13 1982-01-13 Process for the recovery of zinc from effluents and from industrial liquors resulting on the fabrication of viscose-type cord fibres RO83249B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO106310A RO83249B1 (en) 1982-01-13 1982-01-13 Process for the recovery of zinc from effluents and from industrial liquors resulting on the fabrication of viscose-type cord fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO106310A RO83249B1 (en) 1982-01-13 1982-01-13 Process for the recovery of zinc from effluents and from industrial liquors resulting on the fabrication of viscose-type cord fibres

Publications (2)

Publication Number Publication Date
RO83249A2 RO83249A2 (en) 1984-02-21
RO83249B1 true RO83249B1 (en) 1984-02-28

Family

ID=20110937

Family Applications (1)

Application Number Title Priority Date Filing Date
RO106310A RO83249B1 (en) 1982-01-13 1982-01-13 Process for the recovery of zinc from effluents and from industrial liquors resulting on the fabrication of viscose-type cord fibres

Country Status (1)

Country Link
RO (1) RO83249B1 (en)

Also Published As

Publication number Publication date
RO83249A2 (en) 1984-02-21

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