SU758706A1 - Method of processing alumosilicates into alumina - Google Patents
Method of processing alumosilicates into alumina Download PDFInfo
- Publication number
- SU758706A1 SU758706A1 SU792744961A SU2744961A SU758706A1 SU 758706 A1 SU758706 A1 SU 758706A1 SU 792744961 A SU792744961 A SU 792744961A SU 2744961 A SU2744961 A SU 2744961A SU 758706 A1 SU758706 A1 SU 758706A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- alumina
- mixture
- processing
- per hour
- increase
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims description 9
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 229910000323 aluminium silicate Inorganic materials 0.000 claims abstract description 6
- 238000000605 extraction Methods 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims abstract description 6
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 4
- 150000004645 aluminates Chemical class 0.000 claims abstract description 4
- 230000018044 dehydration Effects 0.000 claims abstract description 3
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims abstract description 3
- 238000002360 preparation method Methods 0.000 claims abstract description 3
- 238000005262 decarbonization Methods 0.000 claims abstract 2
- 238000002386 leaching Methods 0.000 claims abstract 2
- 238000000926 separation method Methods 0.000 claims abstract 2
- 235000019738 Limestone Nutrition 0.000 claims description 6
- 239000006028 limestone Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 2
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 2
- 239000004571 lime Substances 0.000 abstract 2
- 239000004927 clay Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 for example Inorganic materials 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010434 nepheline Substances 0.000 description 1
- 229910052664 nepheline Inorganic materials 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance 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
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/08—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals with sodium carbonate, e.g. sinter processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
СПОСОБ ПЕРЕРАБОТКИ АЛЮМОСИЛИКАТОВ ПА ГЛИНОЗЕМ, включающий приготовление шихты из алюмосиликатов, , известн ка и соды, ее сушку, дегидратацию при 300-600°С, декарбонизацию известн ка при 600-1100°С, спекание при 1200-1300°С, выщелачивание спека Я выделение гидроокиси алюмини из алюминатного раствора, отличающийс тем, что, с целью повышени степени извлечени глино- о зема, нагрев шихты в зоне 500-1000 С ведут со скоростью 300-550с в час.METHOD OF PROCESSING ALYUMOSILICATES PA PAUSE, including the preparation of a mixture of aluminosilicates, lime and soda, its drying, dehydration at 300-600 ° C, decarbonization of lime at 600-1100 ° C, sintering at 1200-1300 ° C C, leaching of the specimen I, the separation of aluminum hydroxide from the aluminate solution, characterized in that, in order to increase the degree of extraction of clay and earth, heating of the charge in the area of 500-1000 ° C is carried out at a speed of 300-550s per hour.
Description
Изобретение относитс к области цветной металлургии и может быть использовано в производстве глинозема способом спекани .The invention relates to the field of non-ferrous metallurgy and can be used in the production of alumina by sintering.
Известен способ переработки алюмосиликатов на глинозем, включающий приготовление шихты из алюмосиликатов , известн ка и соды, ее сушку, дегидратацию при 300-600°С, декарбонизацию известн ка при 600-1100 С, спекание при 1200-1300° С, вьпцелачиваг ние спека и вьщеление гидроокиси алюмини из алюминатного раствора.There is a method of processing aluminosilicates on alumina, which includes the preparation of a mixture of aluminosilicates, limestone and soda, its drying, dehydration at 300-600 ° C, decarbonation of limestone at 600-1100 ° C, sintering at 1200-1300 ° C, improvement of speciation and Allocation of aluminum hydroxide from aluminate solution.
Нагрев шихты по.данному способу осуществл ют со скоростью 570-600 С в час.Heating of the charge according to this method is carried out at a speed of 570-600 ° C per hour.
Недостатком известного способа вл етс низкое извлечение глинозема (85%).The disadvantage of this method is the low extraction of alumina (85%).
Целью изобретени вл етс повышение степени извлечени глинозема.The aim of the invention is to increase the recovery rate of alumina.
слcl
Поставленна цель достигаетс тем, что нагрев шихты в зоне 500-1000 С ведут со скоростью 300-550 С в час.The goal is achieved by the fact that the heating of the charge in the zone of 500-1000 ° C is conducted at a speed of 300-550 ° C per hour.
Это позвол ет увеличить степень This allows you to increase the degree
4J образовани щелочных алюминатов в ел 00 спеке и за счет этого повысить извлечение , глинозема и щелочи.4J formation of alkaline aluminates in the 00 00 spec. And thereby increase the extraction of alumina and alkali.
Данный способ включает размол компонентов щихты: алюмосиликатов, нао пример нефелина, и известн ка, дозиО5 ровку компонентов шихты и содового раствора, исход из заданного химического состава шихты (модулей).This method involves grinding the components of alumina: aluminosilicates, for example, nepheline, and limestone, dosing the components of the mixture and soda solution, based on the specified chemical composition of the mixture (modules).
Размолотую шихту в виде пульпы подают наливом во вращающуюс печь. Шихту подвергают сушке при 80-300 С, дегидратации при 300-500 С, декарбонизации известн ка при 5001000°С , спеканию 1200-1300°С.The milled pulp mixture is poured in bulk into a rotary kiln. The mixture is dried at 80-300 ° C, dehydrated at 300-500 ° C, decarbonated limestone at 5001000 ° C, sintering 1200-1300 ° C.
Дл нагревани шихты со скоростью 300-550°С в час в зоне температур 500-1000°С в печи вьпотадывают подпорные кольца (один или несколько) высотой 0,03-0,20 от диаметра печи или примен ют винтовую футеровку в соответствующей зоне печи, имеюн ую указанную вьпие температуру материала . Полученный спек охлаждают, выщелачивают и из апюминатного раствора вьщел ют гидроокись алюмини . Пример 1, Нефелиновоизвестн ковую шихту измельчают до крупности +0,08 мм равной 5%. Состав игихты соответствует следующим мол рные соСаО , „ RjO отношени м 1,95, -f---- ( где - Na,jO, ). Шихту нагревают в течение 3 ч до 1300°С. В зоне 500-1000 0 нагрев шихты ведут со скоростью 550°С в час Спек охлаждают со скоростью 1000 С в час до 100°С, измельчают до крупности -1 мм и выщелачивают, из алюми натного раствора выдел ют гидроокись ллюмини . Получают извлечение из спека 85,5% , Пример 2. Нефелиновоизвестн ковую шихту обрабатывают по режиму, указанному в примере 1, за исключением того, что в зоне 500-1000 С нагрев ведут со скоростью А50 С в час. Получают извлечение из спека 87,5% . Пример 3. Нефепиновоизвестн ковую шихту обрабатывают по режиму, указанному в примере 1, за исключением того, что в зоне 500-1000 С нагрев ведут со скоростью 300 С в час. Получают извлечение из спека 88% AlgOj Данное изобретение позвол ет повысить степень извлечени , глинозема на 0,5-3%, сократить расход топлива , стабилизировать процесс спекани , повысить степень регулировани процесса .To heat the mixture at a speed of 300-550 ° C per hour in the temperature zone of 500-1000 ° C, retaining rings (one or several) height of 0.03-0.20 of the kiln diameter are deposited in the furnace or screw lining is used in the corresponding furnace zone , which indicated the above material temperature. The obtained sinter is cooled, leached, and aluminum hydroxide extracted from the apuminate solution. Example 1, Nepheline-known mixture is ground to a particle size of +0.08 mm and equal to 5%. The composition of the igihht corresponds to the following molar coCaO, „RjO ratios 1.95, -f ---- (where is Na, jO,). The mixture is heated for 3 h to 1300 ° C. In the zone 500–1000 ° C, the charge is heated at a rate of 550 ° C per hour. The specter is cooled at a rate of 1000 ° C per hour to 100 ° C, crushed to a particle size of -1 mm and leached, and aluminum hydroxide is separated from the aluminum solution. An extract from the cake of 85.5% is obtained. Example 2. The nepheline-known mixture is processed according to the regime specified in Example 1, except that in the 500-1000 ° C zone the heating is carried out at a rate of A50 C per hour. Get the extract from the cake of 87.5%. Example 3. The nephepin-known mixture is treated according to the regime specified in Example 1, except that in the 500-1000 ° C zone, the heating is carried out at a rate of 300 ° C per hour. The extraction of 88% AlgOj from the cake is obtained. The present invention makes it possible to increase the degree of extraction, of alumina by 0.5-3%, reduce fuel consumption, stabilize the sintering process, and increase the degree of process control.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792744961A SU758706A1 (en) | 1979-04-02 | 1979-04-02 | Method of processing alumosilicates into alumina |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU792744961A SU758706A1 (en) | 1979-04-02 | 1979-04-02 | Method of processing alumosilicates into alumina |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU758706A1 true SU758706A1 (en) | 1989-04-15 |
Family
ID=20818743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU792744961A SU758706A1 (en) | 1979-04-02 | 1979-04-02 | Method of processing alumosilicates into alumina |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU758706A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2364572C1 (en) * | 2008-02-06 | 2009-08-20 | Александр Валерьевич Александров | Method of aluminium-containing sinter production |
-
1979
- 1979-04-02 SU SU792744961A patent/SU758706A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Арлюк Б.И, Шнеер В.Е. Процесс спекани в производстве глинозема. Металлургиздат., М., 1970, с. 46-48. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2364572C1 (en) * | 2008-02-06 | 2009-08-20 | Александр Валерьевич Александров | Method of aluminium-containing sinter production |
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