SU548564A1 - Method of oxidizing elemental phosphorus in sludges - Google Patents
Method of oxidizing elemental phosphorus in sludgesInfo
- Publication number
- SU548564A1 SU548564A1 SU2128097A SU2128097A SU548564A1 SU 548564 A1 SU548564 A1 SU 548564A1 SU 2128097 A SU2128097 A SU 2128097A SU 2128097 A SU2128097 A SU 2128097A SU 548564 A1 SU548564 A1 SU 548564A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phosphorus
- sludges
- elemental phosphorus
- hydrogen peroxide
- oxidizing elemental
- Prior art date
Links
Landscapes
- Treatment Of Sludge (AREA)
Description
1one
Изобретение относитс к способу переработки бедных фосфорных шламов, получаемых в производстве элементарного фосфора.This invention relates to a process for the treatment of poor phosphorus sludges obtained in the production of elemental phosphorus.
Известен способ окислени элементарного фосфора в шламах, получаемых при термическом восстановлении фосфатов, путем их обработки хромовой кислотой в количестве 0,1 -10% от веса воды, подкислени серной или сол ной кислотой дл коалесценции фосфора в количестве 1-30% от веса воды с последующим отделением фосфора. Недостатками этого способа вл етс его многостадийность и применение агресивных сред.A known method for the oxidation of elemental phosphorus in sludges obtained by thermal reduction of phosphates, by treating them with chromic acid in an amount of 0.1-10% by weight of water, acidifying with sulfuric or hydrochloric acid to coalesce phosphorus in an amount of 1-30% by weight of water the subsequent separation of phosphorus. The disadvantages of this method are its multistage and the use of aggressive media.
Известен также способ окислени элементарного фосфора в кхламах путем обработки их перекисью водорода в течение 30 мин при температуре 100-150 С при соотношении фосфора к перекиси водорода 1:4. Однако такой способ имеет высокую температуру процесса и большой расход окислител (4 г перекиси водорода на 1 г окисл емого фосфора).There is also known a method of oxidizing elemental phosphorus in Khlamah by treating them with hydrogen peroxide for 30 minutes at a temperature of 100-150 ° C with a ratio of phosphorus to hydrogen peroxide of 1: 4. However, this method has a high process temperature and a high consumption of oxidizing agent (4 g of hydrogen peroxide per 1 g of oxidizable phosphorus).
С целью снижени температуры процесса и расхода окислител предлагаетс шлам предварительно подкисл ть сол ной кислотой до рН 1,0-1,5.In order to reduce the process temperature and oxidant consumption, it is proposed to pre-acidify the sludge with hydrochloric acid to a pH of 1.0-1.5.
Целесообразно поддерживать отношение фосфора к перекиси водорода, равное 1,0: 1,5.It is advisable to maintain the ratio of phosphorus to hydrogen peroxide, equal to 1.0: 1.5.
Способ позвол ет снизить температуру процесса до 50-60°С и расход окислител до 1,5 г перекиси водорода на 1 г окисл емого фосфора.The method makes it possible to reduce the process temperature to 50-60 ° C and the oxidant consumption up to 1.5 g of hydrogen peroxide per 1 g of oxidizable phosphorus.
Пример. 200 мл суспензии шлама, содержащей 6-10 г/л элементарного фосфора с рП 4,5-5,5, подкисл ют сол ной кислотой до рП 1,0-1,5, а затем обрабатывают суспензию 33%-ным раствором перекиси водорода, вз той из расчета 1,5 г на 1 г фосфора. В процесеесуспензию интенсивно перемешивают (150- 200 об/мин). Температуру поддерживают в пределах 50-60°С. Обработку провод т в течение 3 час. Степень окислени фосфора вExample. 200 ml of slurry suspension containing 6-10 g / l of elemental phosphorus with a pH of 4.5-5.5, acidified with hydrochloric acid to a pH of 1.0-1.5, and then treated with a suspension of 33% hydrogen peroxide , at the rate of 1.5 g per 1 g of phosphorus. In the process, the suspension is stirred vigorously (150-200 rpm). The temperature is maintained in the range of 50-60 ° C. Processing is carried out for 3 hours. Phosphorus Oxidation Rate
шламе 98%.sludge 98%.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2128097A SU548564A1 (en) | 1975-04-25 | 1975-04-25 | Method of oxidizing elemental phosphorus in sludges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2128097A SU548564A1 (en) | 1975-04-25 | 1975-04-25 | Method of oxidizing elemental phosphorus in sludges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU548564A1 true SU548564A1 (en) | 1977-02-28 |
Family
ID=20617498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2128097A SU548564A1 (en) | 1975-04-25 | 1975-04-25 | Method of oxidizing elemental phosphorus in sludges |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU548564A1 (en) |
-
1975
- 1975-04-25 SU SU2128097A patent/SU548564A1/en active
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