SU1692940A1 - Method of producing magnesium hydroxide - Google Patents
Method of producing magnesium hydroxide Download PDFInfo
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- SU1692940A1 SU1692940A1 SU894734702A SU4734702A SU1692940A1 SU 1692940 A1 SU1692940 A1 SU 1692940A1 SU 894734702 A SU894734702 A SU 894734702A SU 4734702 A SU4734702 A SU 4734702A SU 1692940 A1 SU1692940 A1 SU 1692940A1
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- SU
- USSR - Soviet Union
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- magnesium hydroxide
- magnesium
- hydroxide
- filtration rate
- increase
- Prior art date
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Abstract
Изобретение относитс к технологии соединений магни , в частности к способам получени гидроксида магни Цель изобретени - повысить скорость фильтрации осадка гидроксида магни . Гидроксид магни получают путем обработки природных магнийсодержащих вод гидроксидом кальци , в который предварительно вводитс органическа добавка, например полиакри- ламид или поливинилацетатна эмульси , в количестве 0,0025-0,013 кг на 1 кг Са(ОН)2 с последующей сушкой смеси при 80-110°С. Предлагаемый способ позвол ет увеличить скорость фильтрации осацка гидроксида магни в 1,2-2 раза ро сравнению с известным способом 1 таблThe invention relates to the technology of magnesium compounds, in particular, to methods for producing magnesium hydroxide. The purpose of the invention is to increase the filtration rate of magnesium hydroxide precipitate. Magnesium hydroxide is obtained by treating natural magnesium-containing water with calcium hydroxide, into which an organic additive, such as polyacrylamide or polyvinyl acetate emulsion, is first introduced in an amount of 0.0025-0.013 kg per 1 kg of Ca (OH) 2 followed by drying the mixture at 80-110 & ° C The proposed method allows to increase the filtration rate of precipitation of magnesium hydroxide by 1.2-2 times compared with the known method 1 table
Description
Изобретение относитс к технологии соединений магни и может быть использовано при получении гидроксида магни из природных магнийсодержащих вод.This invention relates to the technology of magnesium compounds and can be used in the preparation of magnesium hydroxide from natural magnesium-containing waters.
Цель изобретени - повышение скорости фильтрации осадка гидроксида магни .The purpose of the invention is to increase the filtration rate of magnesium hydroxide precipitate.
ПримерЮ В 100 л подземный вод, имеющих состав, г/л: Na+ 23,5; К+ 0,6; Са 7,5; Мд+2 1,1; Sr+20,7, ввод т при перемешивании гидроксид кальци , предварительно обработанный поливинилацетатной эмульсией , вз той из расчета 0,0025 кг на 1 кг Са(ОН)2 и высушенный при t 90°C, до достижени рН 10,3-10,8. Образующийс осадок гидроксида магни отстаивают, отфильтровывают, промывают и сушат.EXAMPLE IN 100 l of groundwater, having a composition, g / l: Na + 23,5; K + 0.6; Ca 7.5; MD + 2 1.1; Sr + 20.7, calcium hydroxide, pretreated with polyvinyl acetate emulsion, taken from the calculation of 0.0025 kg per 1 kg of Ca (OH) 2 and dried at t 90 ° C, is added with stirring until pH reaches 10.3-10 ,eight. The resulting magnesium hydroxide precipitate is settled, filtered, washed and dried.
Вли ние количества органической добавки и температуры сушки на скорость фильтрации осадка гидроксида магни приведено в таблице.The effect of the amount of organic additive and drying temperature on the filtration rate of the precipitate of magnesium hydroxide is given in the table.
Как видно из таблицы, предварительна обработка гидроксида кальци органической добавкой в количестве 0,0025-0,013 кгAs can be seen from the table, pretreatment of calcium hydroxide with an organic additive in the amount of 0.0025-0.0133 kg
на 1 кг Са(ОН)2 с последующей сушкой при температуре 80-110°С позвол ет увеличить скорость фильтрации осадка гидроксида магни в 1,2- 2 раза по сравнению с известным способом. При снижении расхода органической добавки ниже 0,0025 кг на 1 кг Са(ОН)2 и повышении температуры сушки обработанного гидроксида кальци выше 110°С скорость фильтрации снижаетс .per 1 kg of Ca (OH) 2, followed by drying at a temperature of 80-110 ° C, allows you to increase the filtration rate of the precipitate of magnesium hydroxide by a factor of 1.2-2 compared with the known method. By reducing the consumption of organic additives below 0.0025 kg per 1 kg of Ca (OH) 2 and increasing the drying temperature of the treated calcium hydroxide above 110 ° C, the filtration rate decreases.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894734702A SU1692940A1 (en) | 1989-07-13 | 1989-07-13 | Method of producing magnesium hydroxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894734702A SU1692940A1 (en) | 1989-07-13 | 1989-07-13 | Method of producing magnesium hydroxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1692940A1 true SU1692940A1 (en) | 1991-11-23 |
Family
ID=21468470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU894734702A SU1692940A1 (en) | 1989-07-13 | 1989-07-13 | Method of producing magnesium hydroxide |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1692940A1 (en) |
-
1989
- 1989-07-13 SU SU894734702A patent/SU1692940A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 451626, кл. С 01 F 5/22, 1972 * |
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