SU700446A1 - Method of preparing zinc oxide from industrial wastes - Google Patents
Method of preparing zinc oxide from industrial wastesInfo
- Publication number
- SU700446A1 SU700446A1 SU772458515A SU2458515A SU700446A1 SU 700446 A1 SU700446 A1 SU 700446A1 SU 772458515 A SU772458515 A SU 772458515A SU 2458515 A SU2458515 A SU 2458515A SU 700446 A1 SU700446 A1 SU 700446A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- zinc oxide
- industrial wastes
- preparing zinc
- gost
- product
- Prior art date
Links
Landscapes
- Removal Of Specific Substances (AREA)
Description
створа Ыа2СОз лл поддержани рН реакционной смеси в пределах 4,5-5,1. По окончании выдержки массу охлаждают до GO-65°С и отфильтровывают от выделившихс в осадок соединений железа и органических примесей. Из фильтрата при 60-65°С добавлсиием раствора 1 а2СОз до рН 9,0-9,5 осаждают основной карбонат цинка. Выделившийс осадок отфильтровывают , нромывают водой и прокаливают в течение 2 ч ири 600°С. Полученную окись цинка суспеизируют, сусиеизию выдерживают при температуре в течение 1 ч, осадок отфИьЧьтровывают и высушивают при .Keeping the Na2Co3 ll keeping the pH of the reaction mixture in the range 4.5-5.1. At the end of the exposure, the mass is cooled to GO-65 ° C and filtered from the precipitated iron compounds and organic impurities. From the filtrate at 60-65 ° C, the basic zinc carbonate is precipitated by adding 1 a2CO3 solution to a pH of 9.0-9.5. The precipitate formed is filtered off, washed with water and calcined at 600 ° C for 2 hours. The resulting zinc oxide is suspended, the fusil is maintained at a temperature for 1 h, the precipitate is isolated and dried at.
Получсниый таким сиособом продукт содержит до 99% основного вещества м по качественным иоказатс.ч м соответствует ГОСТу.The product obtained in this way contains up to 99% of the basic substance m according to quality standards and corresponds to GOST.
Предварительную обработку отходов хлором или гинохлорнтом натри необходимо осуществл ть ирн рП 4,5-5,1, носкольку нри рМ инже 4,5 полученный продукт не соответствует ГОСТу, а нрн рН выше 5,1 содержание основного вещества в продукте снижаетс .Pretreatment of waste with chlorine or sodium glucose chloride is necessary to be performed with pH 4.5-5.1, since the pH of the pH of the injection product 4.5 does not comply with GOST, and the pH of pH above 5.1 decreases the content of the basic substance.
Темиературный интервал предварительной обработки 50-100°С выбран наиболее оптимальным как ио качеству продукта, так и но аппаратурному оформлению процесса, при температурах ннлсе 50°С продукт не соответст1зует ГОСТу, а при температурах выше 10б°С усложн етс аппаратурное оформл( нроцесса.The temperature pretreatment interval of 50-100 ° С was chosen as the most optimal both for the quality of the product and for the instrumentation of the process; at temperatures of 50 ° C, the product does not correspond to GOST, and at temperatures above 10b ° С the instrumentation is complicated (process).
ОргаНИчвские соединени , полученные после взанмодействи с хлором или гннохлоритом , ие образуют побочных комнлексов с цинком н железом и мало растворимы в водном растворе нри рП 4,5-5,1, вследствие чего часть органических соединений удаетс удалить при фильтрации шлама, что снижает загр знение водтюго остатка.Organic compounds obtained after chlorine or gnose chlorine sintering form side complexes with zinc and iron and are poorly soluble in aqueous solution at pH 4.5-5.1, as a result of which part of the organic compounds can be removed by filtering the sludge, which reduces pollution water residue.
Осуществление изобретени позвол ет получнть окись цинка с содержанием основного вещества 97-99%, соответствующую ГОСТу, а также снизить загр знение водного остатка.The implementation of the invention allows to obtain zinc oxide with the content of the basic substance of 97-99%, corresponding to GOST, and also to reduce the contamination of the water residue.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772458515A SU700446A1 (en) | 1977-03-01 | 1977-03-01 | Method of preparing zinc oxide from industrial wastes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772458515A SU700446A1 (en) | 1977-03-01 | 1977-03-01 | Method of preparing zinc oxide from industrial wastes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU700446A1 true SU700446A1 (en) | 1979-11-30 |
Family
ID=20697838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772458515A SU700446A1 (en) | 1977-03-01 | 1977-03-01 | Method of preparing zinc oxide from industrial wastes |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU700446A1 (en) |
-
1977
- 1977-03-01 SU SU772458515A patent/SU700446A1/en active
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