CN103496862B - Calcium aluminate cement production method - Google Patents
Calcium aluminate cement production method Download PDFInfo
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- CN103496862B CN103496862B CN201310456664.4A CN201310456664A CN103496862B CN 103496862 B CN103496862 B CN 103496862B CN 201310456664 A CN201310456664 A CN 201310456664A CN 103496862 B CN103496862 B CN 103496862B
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- aluminous cement
- manufacture method
- heated
- fine grinding
- rise rate
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Abstract
The invention belongs to the field of building materials, and particularly relates to a calcium aluminate cement production method. The calcium aluminate cement is produced by using 25-42% of limestone, 32-50% of commercial alumina, 9-17% of red mud, 8-15% of coal ash and 6-12% of fluorine gypsum as raw materials and has stable quality, high strength and high fire-resistant degree.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of manufacture method of aluminous cement.
Background technology
In recent years, chemical building material rises rapidly, and the cement with various performance constantly occurs.Cement is powdery hydraulicity inorganic coagulation material, the concrete made with its cementing rubble, and after sclerosis, not only intensity is higher, and can also resist the erosion of fresh water or brackish water.For a long time, it, as a kind of important gelling material, is widely used in the engineerings such as civil construction, water conservancy, national defence.Wherein, aluminous cement is with a calcium aluminate (CaO Al
2o
3) or Calcium dialuminate (CaO 2Al
2o
3) be the cement of main mineral constituent.It is generally coordinate by a certain percentage with calcium carbonate (Wingdale) with natural bauxitic clay or commercial alumina, make through calcining or electric smelting, also useful red bauxite coordinates with Wingdale and makes through melting, but existing aluminous cement exists the problems such as quality is stable not, insufficient strength is high, refractoriness is high not more.
Summary of the invention
The invention provides a kind of manufacture method of aluminous cement, gained aluminous cement steady quality, intensity is high, refractoriness is high.
The present invention is achieved through the following technical solutions:
A manufacture method for aluminous cement, comprises the following steps:
(1) by weight percentage, 25 ~ 42% Wingdales, 32 ~ 50% commercial aluminas, 9 ~ 17% red muds, 8 ~ 15% flyash, 6 ~ 12% fluorgypsums are fully mixed, and even with vibration mill fine grinding;
(2) raw material mixed is beaten brick shaping;
(3) mould brick is inserted in tunnel furnace or electric furnace, after being heated to 1300 ~ 1450 DEG C, be incubated 3 ~ 5 hours;
(4) by after the material naturally cooling after sintering, carry out fragmentation successively, thunder covers corase grind, vibrate fine grinding, obtains aluminous cement.
According to the manufacture method of above-mentioned aluminous cement, the Al of described commercial alumina
2o
3content>=98.5%.
According to the manufacture method of above-mentioned aluminous cement, described red mud main chemical compositions is: SiO
2be 12 ~ 25%, Fe
2o
3be 8 ~ 42%, A1
2o
3be 7 ~ 18%, CaO be 5 ~ 42%, MgO is 0.5 ~ 3%, K
2o is 0.1 ~ 0.5%, Na
2o is 2 ~ 12%, TiO
2be 2 ~ 8%.
According to the manufacture method of above-mentioned aluminous cement, described heat temperature raising program is: first with 5 ~ 10 DEG C of min
-1temperature rise rate be heated to 1200 DEG C, then with 3 ~ 5 DEG C of min
-1temperature rise rate be heated to outlet temperature after be incubated.
positive beneficial effect of the present invention:
The inventive method is reasonable in design, easy and simple to handle, and gained aluminous cement steady quality, intensity are high, and refractoriness is up to 1870 ~ 1900 DEG C.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in more detail, but the invention is not restricted to these embodiments.
embodiment 1
The manufacture method of the present embodiment aluminous cement, comprises the following steps:
(1) by weight percentage, 25% Wingdale, 50% commercial alumina, 9% red mud, 8% flyash, 8% fluorgypsum are fully mixed, and even with vibration mill fine grinding;
(2) raw material mixed is beaten brick shaping;
(3) mould brick is inserted in tunnel furnace or electric furnace, first with 5 DEG C of min
-1temperature rise rate be heated to 1200 DEG C, then with 3 DEG C of min
-1temperature rise rate be heated to 1450 DEG C after insulation 3 hours;
(4) by after the material naturally cooling after sintering, carry out fragmentation successively, thunder covers corase grind, vibrate fine grinding, obtains aluminous cement.
embodiment 2
The manufacture method of the present embodiment aluminous cement, comprises the following steps:
(1) by weight percentage, 42% Wingdale, 32% commercial alumina, 9% red mud, 9% flyash, 8% fluorgypsum are fully mixed, and even with vibration mill fine grinding;
(2) raw material mixed is beaten brick shaping;
(3) mould brick is inserted in tunnel furnace or electric furnace, first with 10 DEG C of min
-1temperature rise rate be heated to 1200 DEG C, then with 5 DEG C of min
-1temperature rise rate be heated to 1400 DEG C after insulation 4 hours;
(4) by after the material naturally cooling after sintering, carry out fragmentation successively, thunder covers corase grind, vibrate fine grinding, obtains aluminous cement.
embodiment 3
The manufacture method of the present embodiment aluminous cement, comprises the following steps:
(1) by weight percentage, 35% Wingdale, 32% commercial alumina, 17% red mud, 9% flyash, 7% fluorgypsum are fully mixed, and even with vibration mill fine grinding;
(2) raw material mixed is beaten brick shaping;
(3) mould brick is inserted in tunnel furnace or electric furnace, first with 8 DEG C of min
-1temperature rise rate be heated to 1200 DEG C, then with 4 DEG C of min
-1temperature rise rate be heated to 1300 DEG C after insulation 5 hours;
(4) by after the material naturally cooling after sintering, carry out fragmentation successively, thunder covers corase grind, vibrate fine grinding, obtains aluminous cement.
The present invention is not limited to above-mentioned embodiment, and those skilled in the art also can make multiple change accordingly, but to be anyly equal to the present invention or similar change all should be encompassed in the scope of the claims in the present invention.
Claims (3)
1. a manufacture method for aluminous cement, is characterized in that, comprises the following steps:
(1) by weight percentage, 25 ~ 42% Wingdales, 32 ~ 50% commercial aluminas, 9 ~ 17% red muds, 8 ~ 15% flyash, 6 ~ 12% fluorgypsums are fully mixed, and even with vibration mill fine grinding;
(2) raw material mixed is beaten brick shaping;
(3) mould brick is inserted in tunnel furnace or electric furnace, after being heated to 1300 ~ 1450 DEG C, be incubated 3 ~ 5 hours; Wherein, heat temperature raising program is: first with 5 ~ 10 DEG C of min
-1temperature rise rate be heated to 1200 DEG C, then with 3 ~ 5 DEG C of min
-1temperature rise rate be heated to outlet temperature after be incubated;
(4) by after the material naturally cooling after sintering, carry out fragmentation successively, thunder covers corase grind, vibrate fine grinding, obtains aluminous cement.
2. the manufacture method of aluminous cement according to claim 1, is characterized in that: the Al of described commercial alumina
2o
3content>=98.5%.
3. the manufacture method of aluminous cement according to claim 1, is characterized in that: described red mud main chemical compositions is: SiO
2be 12 ~ 25%, Fe
2o
3be 8 ~ 42%, A1
2o
3be 7 ~ 18%, CaO be 5 ~ 42%, MgO is 0.5 ~ 3%, K
2o is 0.1 ~ 0.5%, Na
2o is 2 ~ 12%, TiO
2be 2 ~ 8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310456664.4A CN103496862B (en) | 2013-09-30 | 2013-09-30 | Calcium aluminate cement production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310456664.4A CN103496862B (en) | 2013-09-30 | 2013-09-30 | Calcium aluminate cement production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103496862A CN103496862A (en) | 2014-01-08 |
| CN103496862B true CN103496862B (en) | 2015-05-06 |
Family
ID=49862153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310456664.4A Expired - Fee Related CN103496862B (en) | 2013-09-30 | 2013-09-30 | Calcium aluminate cement production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103496862B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765893A (en) * | 2012-07-13 | 2012-11-07 | 中国钢研科技集团有限公司 | Method for preparing sulphoaluminate special cement clinker from waste residue fluorine gypsum and red mud |
| CN102863162A (en) * | 2011-07-04 | 2013-01-09 | 王世林 | Processing technology for high purity calcium aluminate cement |
-
2013
- 2013-09-30 CN CN201310456664.4A patent/CN103496862B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863162A (en) * | 2011-07-04 | 2013-01-09 | 王世林 | Processing technology for high purity calcium aluminate cement |
| CN102765893A (en) * | 2012-07-13 | 2012-11-07 | 中国钢研科技集团有限公司 | Method for preparing sulphoaluminate special cement clinker from waste residue fluorine gypsum and red mud |
Non-Patent Citations (1)
| Title |
|---|
| 陈仕香."用粉煤灰配料生产高强高铝水泥".《水泥》.2000,(第8期),13-14. * |
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| CN103496862A (en) | 2014-01-08 |
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Granted publication date: 20150506 Termination date: 20200930 |