CN105693122A - Sulphoaluminate cement - Google Patents
Sulphoaluminate cement Download PDFInfo
- Publication number
- CN105693122A CN105693122A CN201610238633.5A CN201610238633A CN105693122A CN 105693122 A CN105693122 A CN 105693122A CN 201610238633 A CN201610238633 A CN 201610238633A CN 105693122 A CN105693122 A CN 105693122A
- Authority
- CN
- China
- Prior art keywords
- raw material
- cement
- sulphate aluminium
- aluminium cement
- sulphoaluminate cement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
- C04B7/323—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
Abstract
The invention discloses sulphoaluminate cement which is prepared from calcareous raw material, aluminous raw material and sulfuric raw material and has the advantages of reasonable composition and good effect.
Description
Technical field
The present invention relates to cement technology field, especially a kind of sulphate aluminium cement。
Background technology
Cement is by the levigate mixing in proportion of limestone, clay, Iron Ore Powder, and mixture at this time is in raw material。Then calcining, general temperature is at about 1450 DEG C, and the product after calcining is in grog。Then by grog together with Gypsum Fibrosum levigate, be mixed in proportion, be just referred to as cement, this cement is Portland cement。
Cement generally divides Portland cement, the portland cement blending condensation material and special cement。The portland cement blending condensation material is to add other materials to reach special-effect with certain processor in proportion in Portland cement, such as slag cements, Portland pozzolana cement, Portland fly ash cement, composite Portland cement etc.。The raw material of these cement is just than the original more active addition of Portland cement or nonactive composite material。
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is proposed to a kind of sulphate aluminium cement, composition is rationally, effective。
In order to realize foregoing invention purpose, the present invention provides techniques below scheme: a kind of sulphate aluminium cement, is made up of following raw material: calcareous raw material, aluminum raw material and sulfur raw material。
Further, described calcareous raw material is carbide slag。
Further, described aluminum raw material is red mud, flyash or clay。
Further, described sulfur raw material is mud or sulphur coal。
Compared with prior art, the invention have the advantages that employing calcareous raw material, aluminum raw material and sulfur raw material make sulphate aluminium cement, composition is rationally, effective。
Detailed description of the invention
Describing the present invention below in conjunction with detailed description of the invention, the description of this part is only exemplary and explanatory, and protection scope of the present invention should not have any restriction effect。
A kind of sulphate aluminium cement, preparation process is as follows:
1. raw-material selection
Calcareous raw material: carbide slag
Aluminum raw material: red mud, flyash, clay
Sulfur raw material: mud, sulphur coal
2. dispensing
Produce combination reaction according to sulphate aluminium cement raw material through high-temperature calcination and form the sulfoaluminate clinker mineral based on C4A3S-。1 part of Al2O3 and 1 part of SO3 is respectively necessary for 0.55 part and 0.7 part, and CaO chemical combination generates calcium sulphoaluminate (3CaO 3Al2O3 CaSO4)；1 part of SiO2 needs 1.87 parts of CaO chemical combination to generate dicalcium silicate (B-2CaO SiO2)；1 part of Fe2O3 and 1 part of TiO2 is respectively necessary for 0.7 part of CaO chemical combination and generates dicalcium ferrite (2CaO Fe2O3) and calcium titanate (CaO TiO2)。
Each raw material is prepared in proportion and after mix homogeneously, the circular pat made, be then placed in pallet, be placed in Muffle furnace。
2.1 calcining heats and the calcination time impact on sulphoaluminate cement clinker mineral formation
On the basis of pre-stage test, from energy-conservation angle, the calcining heat exploring the most suitable calcinating system test calcining sulphoaluminate cement clinker selected is 1150,1200 and 1250e, and temperature retention time is 30,60 and 120min.
The impact on sulphate aluminium cement intensity of 2.2 calcining heats
In order to select a best calcining heat point in 1200～1350, will respectively 1200 and 1300, when insulation 120min the grog calcined out according to the ratio grinding of m (grog (SA)) Bm (dihydrate gypsum (DG))=95B5 (SA95DG05) and m (grog (SA)) Bm (dihydrate gypsum (DG)) B limestone (LS)=75B5B20 (SA75DG05LS20) to certain fineness, then molding measure its comprcssive strength。
The chemical composition of 2.3 sulphoaluminate cement clinkers and shape characteristic thereof
The scanning electron microscope (SEM) photograph of grog SA, analyzing crystal form。
The Gypsum Fibrosum impact on sulphate aluminium cement intensity is mixed outside 2.4
Select the volume respectively 0,3%, 5%, 7% and 10% of dihydrate gypsum, do comprcssive strength。
2.5 sulphate aluminium cements carry out XRD analysis, make Qualitative and quantitative analysis
The leaching characteristic of chloride ion in 2.6 sulphate aluminium cements
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention。
Claims (4)
1. a sulphate aluminium cement, it is characterised in that: it is made up of following raw material: calcareous raw material, aluminum raw material and sulfur raw material。
2. sulphate aluminium cement as claimed in claim 1, it is characterised in that: described calcareous raw material is carbide slag。
3. sulphate aluminium cement as claimed in claim 1, it is characterised in that: described aluminum raw material is red mud, flyash or clay。
4. sulphate aluminium cement as claimed in claim 1, it is characterised in that: described sulfur raw material is mud or sulphur coal。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610238633.5A CN105693122A (en) | 2016-04-18 | 2016-04-18 | Sulphoaluminate cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610238633.5A CN105693122A (en) | 2016-04-18 | 2016-04-18 | Sulphoaluminate cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105693122A true CN105693122A (en) | 2016-06-22 |
Family
ID=56217032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610238633.5A Pending CN105693122A (en) | 2016-04-18 | 2016-04-18 | Sulphoaluminate cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105693122A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030010257A1 (en) * | 2000-02-08 | 2003-01-16 | Tatsuo Ikabata | Cement clinker, cement composition, method for producing cement clinker and method for treatment of waste containing alkali component |
| CN102765890A (en) * | 2012-08-03 | 2012-11-07 | 尹小林 | Method using titanium gypsum and acetylene sludge to prepare high-calcium sulphoaluminate or high-sulfur clinkers |
| CN104193204A (en) * | 2014-08-30 | 2014-12-10 | 周峰 | Process for producing high-strength cement by using industrial waste residues |
| CN104446067A (en) * | 2014-11-10 | 2015-03-25 | 尹小林 | Method for producing belite-gypsum material by using sludge and waste gypsum through dry-process rotary kiln |
| CN105060744A (en) * | 2015-08-14 | 2015-11-18 | 盐城工学院 | Preparation method of sulfoaluminate Belite cement |
-
2016
- 2016-04-18 CN CN201610238633.5A patent/CN105693122A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030010257A1 (en) * | 2000-02-08 | 2003-01-16 | Tatsuo Ikabata | Cement clinker, cement composition, method for producing cement clinker and method for treatment of waste containing alkali component |
| CN102765890A (en) * | 2012-08-03 | 2012-11-07 | 尹小林 | Method using titanium gypsum and acetylene sludge to prepare high-calcium sulphoaluminate or high-sulfur clinkers |
| CN104193204A (en) * | 2014-08-30 | 2014-12-10 | 周峰 | Process for producing high-strength cement by using industrial waste residues |
| CN104446067A (en) * | 2014-11-10 | 2015-03-25 | 尹小林 | Method for producing belite-gypsum material by using sludge and waste gypsum through dry-process rotary kiln |
| CN105060744A (en) * | 2015-08-14 | 2015-11-18 | 盐城工学院 | Preparation method of sulfoaluminate Belite cement |
Non-Patent Citations (1)
| Title |
|---|
| 黑亮: "《成真污泥安全处置与资源化利用途径探索》", 30 September 2015, 中国农业科学技术出版社 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160622 |