RU2052409C1 - Method for production of light filler - Google Patents
Method for production of light filler Download PDFInfo
- Publication number
- RU2052409C1 RU2052409C1 SU5050380A RU2052409C1 RU 2052409 C1 RU2052409 C1 RU 2052409C1 SU 5050380 A SU5050380 A SU 5050380A RU 2052409 C1 RU2052409 C1 RU 2052409C1
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- RU
- Russia
- Prior art keywords
- feo
- production
- granules
- clay
- light filler
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000000945 filler Substances 0.000 title abstract 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004927 clay Substances 0.000 claims abstract description 14
- 239000008187 granular material Substances 0.000 claims abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 235000013980 iron oxide Nutrition 0.000 claims abstract description 6
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000010410 dusting Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000010304 firing Methods 0.000 claims description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000011044 quartzite Substances 0.000 claims 1
- 230000008961 swelling Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 6
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1066—Oxides, Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
- C04B14/12—Expanded clay
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
Description
Изобретение относится к промышленности строительных материалов и может быть использовано при производстве легких заполнителей бетона, в частности керамзитового гравия. The invention relates to the building materials industry and can be used in the production of lightweight concrete aggregates, in particular expanded clay gravel.
Известны способы производства керамзита с опудриванием сырцовых гранул огнеупорной глиной или каолином [1]
Наиболее близким является способ изготовления легкого заполнителя, при котором опудривание сырцовых гранул керамзита перед вспучиванием осуществляют в печи в процессе обжига пылью газоочистки при производстве ферросилиция [2]
Недостаток известного способа невысокие прочность полученного керамзита и коэффициент конструктивного качества.Known methods for the production of expanded clay with dusting of raw granules with refractory clay or kaolin [1]
The closest is a method of manufacturing a lightweight aggregate, in which the powdering of expanded clay granules before swelling is carried out in a furnace during firing by gas purification dust in the production of ferrosilicon [2]
The disadvantage of this method is the low strength of the obtained expanded clay and the coefficient of structural quality.
Цель изобретения увеличение прочности и коэффициента конструктивного качества керамзита. The purpose of the invention is the increase in strength and coefficient of structural quality of expanded clay.
Указанная цель достигается тем, что в способе изготовления легкого заполнителя, преимущественно керамзита, опудривание глинистых гранул в процессе обжига осуществляют "хвостами" мокрого обогащения железистых кварцитов с содержанием оксидов железа 35-40% при соотношении FeO:Fe2O3 1:(4,4-4,8). В качестве опудривателя гранул используют "хвосты" мокрого обогащения железистых кварцитов Михайловского ГОКа КМА, содержащих 35-40% оксидов железа при соотношении FeO к Fe2O3 как 1:(4,4-4,8). "Хвосты" имеют химический состав, мас. SiO2 53,6; Al2O3 1,3; Fe2O3 31,74; FeO 6,9; CaO 1,6; MgO 1,24; п.п.п. 3,62. Зерновой состав, мас. 0,5-1,0 мм 0,52; 0,25-0,5 мм 6,39; 0,14-0,25 мм 13,52; 0,056-0,14 мм 27,35; менее 0,056 мм 52,22.This goal is achieved by the fact that in the method of manufacturing a lightweight aggregate, mainly expanded clay, dusting of clay granules during the firing process is carried out by the "tailings" of wet enrichment of ferruginous quartzites with an iron oxide content of 35-40% at a ratio of FeO: Fe 2 O 3 1: (4, 4-4.8). As a granule dusting agent, “tails” of wet enrichment of ferruginous quartzites of the Mikhailovsky GOK KMA containing 35-40% iron oxides with a ratio of FeO to Fe 2 O 3 as 1: (4.4-4.8) are used. "Tails" have a chemical composition, wt. SiO 2 53.6; Al 2 O 3 1.3; Fe 2 O 3 31.74; FeO 6.9; CaO 1.6; MgO 1.24; p.p.p. 3.62. Grain composition, wt. 0.5-1.0 mm 0.52; 0.25-0.5 mm 6.39; 0.14-0.25 mm 13.52; 0.056-0.14 mm 27.35; less than 0.056 mm 52.22.
Способ осуществляют следующим образом. В качестве опудривателя используют "хвосты" мокрого обогащения железистых кварцитов с содержанием оксидов железа 30-45% с соотношением FeO:Fe2O3=1:(4,1-4,9). Покрытие гранул этим опудривателем осуществляют в слое гранул во вращающейся печи в начале зоны вспучивания, в которую опудриватель подают по одной или нескольким трубам. Опудренные гранулы обжигают при температуре вспучивания 1200-1230оС.The method is as follows. As a dusting agent, the “tailings” of wet enrichment of ferruginous quartzites with an iron oxide content of 30-45% with a ratio of FeO: Fe 2 O 3 = 1: (4.1-4.9) are used. Coating the granules with this dusting agent is carried out in a layer of granules in a rotary kiln at the beginning of the expansion zone, into which the dusting agent is fed through one or more pipes. Powdered granules are fired at a swelling temperature of 1200-1230 about C.
Применяемый опудриватель "хвосты" мокрого обогащения железистых кварцитов отличается высокой реакционной способностью при взаимодействии с поверхностью обжигаемых гранул, так как содержит в своем составе оксиды железа в виде закиси (FeO). Этим обеспечивается оптимальное условие образования на обжигаемых гранулах длинноплавкой и более вязкой корочки. Образуется корочка оптимальной вязкости, эластичности и толщины, причем процесс образования происходит равномерно и с высокой интенсивностью до температуры выделения из обжигаемых гранул необходимого для эффективного вспучивания количества газообразной фазы. Значительно увеличивается для короткоплавких глинистых пород температура верхнего предела интервала вспучивания. Одновременно повышается плотность, прочность и тугоплавкость корочки. The “tails” dusting agent used for wet enrichment of ferruginous quartzites is highly reactive when interacting with the surface of fired granules, since it contains iron oxides in the form of nitrous oxide (FeO). This ensures the optimal condition for the formation of long-melting and more viscous crust on fired granules. A crust of optimal viscosity, elasticity and thickness is formed, and the formation process occurs uniformly and with high intensity up to the temperature of separation from the fired granules necessary for effective expansion of the amount of the gaseous phase. For short-melting clay rocks, the temperature of the upper limit of the expansion interval is significantly increased. At the same time, the density, strength and refractoriness of the crust increases.
Конкретные примеры осуществления способа приведены в табл.1, составы "хвостов" обогащения железистых кварцитов в табл.2. Specific examples of the method are given in table 1, the composition of the "tails" of the enrichment of ferruginous quartzites in table 2.
Предлагаемый опудриватель является отходом при обогащении железистых кварцитов, что позволяет решить проблему их использования, расширив сырьевую базу керамзита. The proposed dusting agent is a waste in the enrichment of ferruginous quartzites, which allows us to solve the problem of their use, expanding the raw material base of expanded clay.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU5050380 RU2052409C1 (en) | 1992-06-30 | 1992-06-30 | Method for production of light filler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU5050380 RU2052409C1 (en) | 1992-06-30 | 1992-06-30 | Method for production of light filler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2052409C1 true RU2052409C1 (en) | 1996-01-20 |
Family
ID=21608358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU5050380 RU2052409C1 (en) | 1992-06-30 | 1992-06-30 | Method for production of light filler |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2052409C1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2359932C1 (en) * | 2008-03-27 | 2009-06-27 | Юлия Алексеевна Щепочкина | Method of production of keramzite gravel |
| RU2459774C1 (en) * | 2011-03-21 | 2012-08-27 | Юлия Алексеевна Щепочкина | Method of making claydite gravel |
-
1992
- 1992-06-30 RU SU5050380 patent/RU2052409C1/en active
Non-Patent Citations (1)
| Title |
|---|
| 1. Роговой М.И. Технология искусственных пористых заполнителей и керамики. М., 1974, с.99. 2. Авторское свидетельство СССР N 1250535, кл. C 04B 14/12, 1984. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2359932C1 (en) * | 2008-03-27 | 2009-06-27 | Юлия Алексеевна Щепочкина | Method of production of keramzite gravel |
| RU2459774C1 (en) * | 2011-03-21 | 2012-08-27 | Юлия Алексеевна Щепочкина | Method of making claydite gravel |
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