SU988771A1 - Method for separating red slurry - Google Patents
Method for separating red slurry Download PDFInfo
- Publication number
- SU988771A1 SU988771A1 SU813304031A SU3304031A SU988771A1 SU 988771 A1 SU988771 A1 SU 988771A1 SU 813304031 A SU813304031 A SU 813304031A SU 3304031 A SU3304031 A SU 3304031A SU 988771 A1 SU988771 A1 SU 988771A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- magnetic field
- coagulation
- pulp
- aluminate solution
- separating red
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 13
- 239000002002 slurry Substances 0.000 title 1
- 230000005291 magnetic effect Effects 0.000 claims description 12
- 238000005345 coagulation Methods 0.000 claims description 5
- 230000015271 coagulation Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 150000004645 aluminates Chemical class 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 1
- 239000008394 flocculating agent Substances 0.000 claims 1
- 238000005272 metallurgy Methods 0.000 claims 1
- 238000004065 wastewater treatment Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000010802 sludge Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Description
(54) СПОСОБ ОТДЕЛЕНИЯ КРАСНОГО ШЛАМА(54) METHOD OF SEPARATION OF RED DUMPS
Изобретение относитс к глиноземт ному производству и мо (ет, бать использовано дл отделени красного шлама от алюмйнатного -раствора. . Известен способ отделени красного шлама, включающий восстановительный обжиг шлама с последующей магнитной сепарацией фракций железа tl.The invention relates to the production of alumina and my (em, bat used to separate the red mud from the aluminum sulphate solution.) There is a known method of separating red mud, including reduction sintering, followed by magnetic separation of the iron fractions tl.
Недостатком известного способа вл {етс трудность отделени от раствора, многооперадионность процесса .The disadvantage of this method is the difficulty of separation from the solution, the multioperadium process.
Наиболее, близким по технической сущности и дрстигаемому результату к предлагаемому вл етс способ отделени красного шлама от алхмлинатного раствора, включгиощий обработку пульпы посто нным магнитным полем. При этом обработку провод т при напр женности магнитного пол 600-800 Э. Достаточно полное удаление железа достигаетс при его высоком содержании в шламе 2}.The closest to the technical essence and the achievable result to the proposed is the method of separation of the red mud from the aluminate solution, including the processing of the pulp with a constant magnetic field. In this case, the treatment is carried out at a magnetic field strength of 600-800 E. Sufficiently complete removal of iron is achieved when it is high in sludge 2}.
Недостатком известного способа вл етс низка степень -коагул ции маложелезистого шлама, длительность разделени фаз, высокое содержание твердого в сливе.The disadvantage of the known method is the low degree of coagulation of the low-iron sludge, the duration of separation of the phases, the high solids content in the discharge.
Поставленна цель достигаетс тем, что согласно способу, вклю-тажадсжгу 66работку пульпы тюсто нвым магнитным полем, пульпу предварительно подвергают воздействию переменного магнитного пол , а обработку посто нным магнитным полем провод т при его напр женности 1000-5000 Э.This goal is achieved by the fact that, according to the method, including pulping with a tyostatic magnetic field, the pulp is preliminarily exposed to an alternating magnetic field, and processing with a constant magnetic field is carried out at its intensity of 1000-5000 E.
Сущность способа заключаетс в The essence of the method is
10 том, что действие переменного магнитного Пол снимает зар д немагнитных частиц, а ферромагнитна взвесь интенсивно намагничиваетс . При последующем действии посто нного магнитп 10 that the action of an alternating magnetic field removes the charge of non-magnetic particles, and the ferromagnetic suspension is intensely magnetized. With the subsequent action of a permanent magnet
15 ного пол на подготовленные частицы красного шлама скорость коакул ции частиц увеличиваетс . Нёшр женность менее 1000 Э не увеличивает скорость коагул ции вследствие низкого содер- On the 15th floor, on the prepared red mud particles, the rate of co-accumulation of the particles increases. Lack less than 1000 Oe does not increase the rate of coagulation due to its low content.
20 жани железа в красном шлгше, при напр женности 1магнитного пол более 5000 Э наблюдаетс значительное забивание насадки в коагул торе, что затрудн ет поступление пульпы в сгус25 титель.20 zhany iron in red shlgshe, with a intensity of 1 magnetic field more than 5000 Oe, a significant clogging of the nozzle in the coagulator is observed, which complicates the flow of pulp into the condenser.
П р и м ер. Пульпу состава, г/л: NajOoffwlSO-lOO; Ыа-СЬ,„ 30-140; AlaOflsO; Ж: Т « при подвергают действию переменного маг30 нитного пол 2-4 с, затем подают вP r and m er. Pulp composition, g / l: NajOoffwlSO-lOO; Na-Ch, „30-140; AlaOflsO; W: T "when exposed to an alternating magnetic field of 2-4 s, then served in
магнитный контактный коагул тор,где поддерживают напр женность 1000,Э 5-8 с. Затем пульпу подают в сгуститель . В сливе содержитс 400500 мг/л твердого. Сгущеннь й шламmagnetic contact coagulum, where the strength of 1000 is maintained, E 5-8 s. Then the pulp is fed into the thickener. Drain contains 400,500 mg / l solid. Condensed sludge
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813304031A SU988771A1 (en) | 1981-06-18 | 1981-06-18 | Method for separating red slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813304031A SU988771A1 (en) | 1981-06-18 | 1981-06-18 | Method for separating red slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU988771A1 true SU988771A1 (en) | 1983-01-15 |
Family
ID=20964112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU813304031A SU988771A1 (en) | 1981-06-18 | 1981-06-18 | Method for separating red slurry |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU988771A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5164174A (en) * | 1991-10-11 | 1992-11-17 | Reynolds Metals Company | Detoxification of aluminum spent potliner by thermal treatment, lime slurry quench and post-kiln treatment |
-
1981
- 1981-06-18 SU SU813304031A patent/SU988771A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5164174A (en) * | 1991-10-11 | 1992-11-17 | Reynolds Metals Company | Detoxification of aluminum spent potliner by thermal treatment, lime slurry quench and post-kiln treatment |
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