SU1477682A1 - Method of producing aluminium alpha-oxide - Google Patents
Method of producing aluminium alpha-oxide Download PDFInfo
- Publication number
- SU1477682A1 SU1477682A1 SU874260942A SU4260942A SU1477682A1 SU 1477682 A1 SU1477682 A1 SU 1477682A1 SU 874260942 A SU874260942 A SU 874260942A SU 4260942 A SU4260942 A SU 4260942A SU 1477682 A1 SU1477682 A1 SU 1477682A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- aluminum hydroxide
- potassium bromide
- autoclave
- alumina
- crystals
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title 1
- 229910052782 aluminium Inorganic materials 0.000 title 1
- 239000004411 aluminium Substances 0.000 title 1
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims abstract description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 15
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000002425 crystallisation Methods 0.000 claims abstract description 6
- 230000008025 crystallization Effects 0.000 claims abstract description 6
- 239000013078 crystal Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 2
- 239000012190 activator Substances 0.000 claims 1
- 238000007792 addition Methods 0.000 claims 1
- 238000011109 contamination Methods 0.000 claims 1
- 238000009856 non-ferrous metallurgy Methods 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Изобретение относитс к цветной металлургии и может быть использовано дл получени α - оксида алюмини . Цель - повышение качества продукта за счет увеличени его абразивной способности. Дл этого аморфный гидроксид алюмини с растворами бромида кали и гидроксида натри сливают на дно автоклава, а влажный аморфный гидроксид алюмини помещают во вкладыш автоклава. Бромид кали берут в количестве 2-15 мас.% от массы гидроксида алюмини , а гидроксид натри - в массовом соотношении к бромиду кали , равном 1:(5-10). Кристаллизацию провод т в автоклаве при температуре 350-450°с и давлении 30-250 атм. Данный способ позвол ет получить мелкокристаллический Α - оксид алюмини с абразивной способностью 125-130%. 1 табл.The invention relates to non-ferrous metallurgy and can be used to produce α-alumina. The goal is to improve the quality of the product by increasing its abrasive ability. For this, amorphous aluminum hydroxide with potassium bromide and sodium hydroxide solutions is drained to the bottom of the autoclave, and wet amorphous aluminum hydroxide is placed in the autoclave insert. Potassium bromide is taken in an amount of 2-15 wt.% Based on the weight of aluminum hydroxide, and sodium hydroxide in a mass ratio to potassium bromide equal to 1: (5-10). The crystallization is carried out in an autoclave at a temperature of 350-450 ° C and a pressure of 30-250 atm. This method allows to obtain fine crystalline Α - alumina with an abrasive capacity of 125-130%. 1 tab.
Description
Изобретение относитс к цветнойThe invention relates to color
металлургии и может быть использо- вано дл получени d-оксида алюмини .metallurgy and can be used to produce d-alumina.
Цель изобретени - повышение качества продукта за счет увеличени его абразивной способности.The purpose of the invention is to improve the quality of the product by increasing its abrasive ability.
П р и м е р . 1 г аморфного гидроксида алюмини заливают 3 мл водного раствора бромида кали и гидроксида натри с концентрацией КВг 3%, a NaOH 0,6%, и выдерживают при комнатной температуре в течение суток . Затем раствор сливают на дно автоклава объемом 13 мл, а влажный аморфный гидроксид алюмини помещают во вкладыш автоклава. Кристаллизацию провод т при 400°С в течение 20 ч и давлении паров воды 100 атм.PRI me R. 1 g of amorphous aluminum hydroxide is poured with 3 ml of an aqueous solution of potassium bromide and sodium hydroxide with a KBr concentration of 3%, and NaOH of 0.6%, and is kept at room temperature for a day. Then the solution is poured to the bottom of the autoclave with a volume of 13 ml, and the wet amorphous aluminum hydroxide is placed in the insert of the autoclave. The crystallization is carried out at 400 ° C for 20 hours and a water vapor pressure of 100 atm.
После разгерметизации автоклава содержимое вкладыша высушивают при 100°С в течение 3 ч. Полученный продукт содержит только о( -оксид алюмини и имеет дифрактограмму, приведенную в табл. 1.After depressurization of the autoclave, the contents of the liner are dried at 100 ° C for 3 hours. The resulting product contains only o (α-alumina and has a diffractogram shown in Table 1.
Кристаллы d.-оксида алюмини три- гональной сингонии имеют ромбоэдрический габитус и размер в поперечнике 70-150 мкм. Абразивна способность составл ет 125% по отношению к дробленному монолиту d A1203 (известный). Аналогично провод т серию опытов. Примеры приведены в табл. 2.The crystals of d.-alumina of a trigonal syngony have a rhombohedral habit and a size in the diameter of 70–150 μm. The abrasive capacity is 125% with respect to the crushed d A1203 monolith (known). Similarly, a series of experiments was carried out. Examples are given in table. 2
Таким образом предлагаемый способ позвол ет получить мелкокристаллический Al/j03 с повышенными физико- механическими характеристиками.Thus, the proposed method allows to obtain fine-crystalline Al / j03 with improved physicomechanical characteristics.
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Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874260942A SU1477682A1 (en) | 1987-06-12 | 1987-06-12 | Method of producing aluminium alpha-oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874260942A SU1477682A1 (en) | 1987-06-12 | 1987-06-12 | Method of producing aluminium alpha-oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1477682A1 true SU1477682A1 (en) | 1989-05-07 |
Family
ID=21310439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU874260942A SU1477682A1 (en) | 1987-06-12 | 1987-06-12 | Method of producing aluminium alpha-oxide |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1477682A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2126364C1 (en) * | 1993-06-30 | 1999-02-20 | Сумитомо Кемикал Компани, Лимитед | Method of producing alpha-alumina (versions) |
| RU2136596C1 (en) * | 1993-11-25 | 1999-09-10 | Сумитомо Кемикал Компани, Лимитед | Method of preparing alpha-aluminum powder and alpha-aluminum powder |
| RU2176985C1 (en) * | 2000-06-30 | 2001-12-20 | Открытое акционерное общество Научно-производственное объединение "Поволжский АвиТИ" | Method of preparing corundum |
| RU2196107C2 (en) * | 1996-10-25 | 2003-01-10 | Прокатализ | Regeneration of anthraquinone in the hydrogen peroxide synthesis process |
| RU2229441C1 (en) * | 2002-12-17 | 2004-05-27 | Данчевская Марина Николаевна | Method of preparing fine-grained corundum |
| RU2257346C1 (en) * | 2004-03-10 | 2005-07-27 | Открытое акционерное общество "Пьезо" | Fine-crystalline alpha-alumina production process |
| RU2340557C2 (en) * | 2007-01-12 | 2008-12-10 | ООО "ВФТехнологии" | Method of obtaining fine crystalline corundum |
-
1987
- 1987-06-12 SU SU874260942A patent/SU1477682A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Патент US № 2642337, кл. 23-142, 1953. * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2126364C1 (en) * | 1993-06-30 | 1999-02-20 | Сумитомо Кемикал Компани, Лимитед | Method of producing alpha-alumina (versions) |
| RU2136596C1 (en) * | 1993-11-25 | 1999-09-10 | Сумитомо Кемикал Компани, Лимитед | Method of preparing alpha-aluminum powder and alpha-aluminum powder |
| RU2196107C2 (en) * | 1996-10-25 | 2003-01-10 | Прокатализ | Regeneration of anthraquinone in the hydrogen peroxide synthesis process |
| RU2176985C1 (en) * | 2000-06-30 | 2001-12-20 | Открытое акционерное общество Научно-производственное объединение "Поволжский АвиТИ" | Method of preparing corundum |
| RU2229441C1 (en) * | 2002-12-17 | 2004-05-27 | Данчевская Марина Николаевна | Method of preparing fine-grained corundum |
| RU2257346C1 (en) * | 2004-03-10 | 2005-07-27 | Открытое акционерное общество "Пьезо" | Fine-crystalline alpha-alumina production process |
| RU2340557C2 (en) * | 2007-01-12 | 2008-12-10 | ООО "ВФТехнологии" | Method of obtaining fine crystalline corundum |
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