CN1099013A - A kind of barium cement - Google Patents
A kind of barium cement Download PDFInfo
- Publication number
- CN1099013A CN1099013A CN 93115407 CN93115407A CN1099013A CN 1099013 A CN1099013 A CN 1099013A CN 93115407 CN93115407 CN 93115407 CN 93115407 A CN93115407 A CN 93115407A CN 1099013 A CN1099013 A CN 1099013A
- Authority
- CN
- China
- Prior art keywords
- barium
- cement
- composition
- grog
- barium silicate
- 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.)
- Pending
Links
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
- C04B7/003—Barium or strontium cements
Abstract
What the present invention relates to is a kind of barium cement, particularly is the barium cement of feedstock production with the witherite, and the main body of its clinker mineral composition is barium silicate and barium silicate calcium, and the ratio that changes its relative content can make cement performance obtain desirable best the improvement.
Description
What the present invention relates to is a kind of cement that contains the barium silicate composition.
In cement products, barium cement is a kind of cement type with unique and excellent properties.Romania's patent had once been introduced a kind of barium aluminate cement No. 48644, because of its water-soluble characteristics that have, belonged to the air-setting material, used as refractory cements usually.Chinese patent 89100506.4 discloses a kind of aluminosulfate cement of baric, because its barium content is relatively low, the ratio that contains aluminium and sulphur is higher, makes it can be subjected to significant disadvantageous effect inevitably on aspect performances such as radioprotective.On the other hand, present known barium cement or baric cement clinker all are to be formed by other interpolation subsidiary material mixed calcining commonly used in the barite of barium sulfate-containing and the Portland cement, its firing temperature height, usually more than 1500 ℃, and requirements such as the reductive condition of maintenance and desulfurization measure need be arranged, complex process, practicality are not high.The barium composition that burns till in the grog of back is the barium silicate individual components substantially, can only decide cement intensity by it, and limitation is big, makes strength of cement that the defective of retraction phenomenon be arranged.
At above-mentioned situation, the present invention's purpose at first is to provide a kind of well behaved barium cement that contains the barium silicate composition; It is a kind of through witherite (BaCO that another purpose is to provide
3) be the barium cement of raw material.
In the barium cement clinker of the present invention, the essential mineral composition also contains the barium silicate calcium of enough ratios except that barium silicate, all the other then be in a small amount of Portland cement usually the composition that may exist.The mineral composition of grog (weight %) is:
Barium silicate 20～70
Barium silicate calcium 20～70
Iron barium aluminate 0～10
Sulplo-aluminate 0～10
Wustite 0～5.
Barium silicate in the composition mainly is silicic acid two barium (Ba
2SiO
4), can provide and guarantee the early strength of cement, barium silicate calcium then can cooperate with it on this early strength basis, further improves and guarantee the later strength of cement.By cooperatively interacting of these two kinds of component suitable proportions, can obviously improve the performance of cement, overcome present single limitation and deficiency, solved the retraction phenomenon of strength of cement aspect, and enlarged the scope of application of cement by barium silicate composition decision strength of cement.The result of table 3 has shown that the change of these two kinds of component concentration ratios in the grog is to the strength of cement Effect on Performance.When the content appropriateness of appropriate reduction of the content of barium silicate and/or barium silicate calcium increased, the early strength of cement was low, the later strength height as can be seen; Otherwise then the early strength of cement improves, and later strength is better.Therefore the two cooperatively interacts and can make cement performance more perfect.
Though barium silicate and barium silicate calcium are two kinds of main bodys and the crucial mineral constituent that constitutes cement clinker of the present invention, but as other various cement, in iron barium aluminate, sulplo-aluminate, the wustite etc. one or more also be in the grog sintering procedure with used raw material ore several major impurity components that will inevitably bring into, yet have some other impurity component in addition.
As above-mentioned relevant document was pointed, the calcining of barium cement slurry did not generally have any difficulty on technology.Because the barite ore calcining temperature height of barium sulfate-containing, thus the present invention to propose with the witherite mineral's masonry that contains barium carbonate especially be barium ore raw material calcining cement clinkers.Generally only be 1320～1390 ℃ because of its firing temperature on the one hand, not only the barium cement firing temperature than above-mentioned bibliographical information hangs down 110～200 ℃, firing temperature than ordinary Portland cement also hangs down 60～100 ℃, and need not any additional reductive condition and desulfurization measure, manufacture method is very easy, can adopt the production technique manufacturing of present Portland cement fully.On the other hand, as the barium ore raw material, can directly obtain containing the barium silicate of suitable proportion and the grog of two kinds of main body mineral constituents of barium silicate calcium with witherite after the calcining.The cement clinker that burns till is made the method for cement and in the contour active material of blast furnace slag, phosphorus slag, liquid slag from power plant and portland cement clinker one or more by common, and an amount of gypsum adjustable solidification agent mix levigate, to improve hydrated product Ba(OH)
2The shortcoming that Yi Rong loses, the compactness of increase cement stone, the hydraulicity barium cement of formation good stability.This chemical constitution (weight %) of making in the cement is: BaO 50～75, and CaO 3～20, Al
2O
30.5～5, SiO
210～18, Fe
2O
31～8, SO
30～5.
Shown in the table 1 is to be the raw material chemical ingredients of the example of feedstock production barium cement of the present invention with witherite, porcelain stone, quartz sand and iron powder, and two main body mineralogical composition ratios in the cement clinker that burns till in the ordinary Portland cement production technique under 1320～1390 ℃.Measure through X-ray diffraction, the chemical formula of this two main bodys composition barium silicate is Ba
2SiO
4, the chemical formula of barium silicate calcium is Ba
1.55Ca
0.45SiO
4The corresponding chemical composition (weight %) that each routine grog and conventional high reactivity material and the proper amount of gypsum of 5-15% are mixed the levigate hydraulicity barium cement of making sees Table 2.
The inspection that this two routine barium cement is carried out physicals then the results are shown in Table 3.This result demonstrate change grog mesosilicic acid barium and barium silicate calcium two components relative proportion content can with cement in early days intensity and late period the intensity aspect performance adjust to desirable optimum range.The result also demonstrates in the table, and the cooperation of these two kinds of main body compositions can significantly improve the density of cement, therefore helps improving the barrier propterty to radioactive radiations such as gamma-rays, X ray.With
226Ra and
60It is as shown in table 4 that the shielding property result of this two routine cement is detected in Co high-energy radiation source, and the μ in the table is the linear absorption coefficient (cm of unit
-1).
In addition, barium cement of the present invention also has very high sulfate resistance etch performance.The cement of the present invention of above-mentioned example 1 is as shown in table 5 with the result of tap water and 5% Adlerika maintenance respectively.This result is clear to be shown, opposite with Portland cement, more taller than the intensity under the nature water curing condition in the strength of cement under the vitriol condition, has confirmed the excellent anti corrosive nature that it had.
Table 1
| Raw material chemical ingredients (%) | Example 1 | Example 2 | |
| SiO 2 | 10.17 | 12.51 | |
| Fe 2O 3 | 4.30 | 1.70 | |
| Al 2O 3 | 0.92 | 0.59 | |
| CaO | 3.31 | 2.75 | |
| BaO | 56.41 | 57.30 | |
| MgO | 0.59 | 0.40 | |
| Grog composition (%) | Ba 2SiO 4 | 20～25 | 40～45 |
| Ba 1.55Ca 0.45SiO 4 | 50～55 | 35～40 |
Table 2
| Loss on ignition (%) | SiO 2 | Fe 2O 3 | Al 2O 3 | CaO | BaO | |
| Example 1 | 0.4～0.45 | 14.5～15.0 | 4.3～6.0 | 1.0～2.5 | 5～15 | 60～65 |
| Example 2 | 0.4～0.45 | 14.5～16 | 2.2～3.5 | 0.5～2.0 | 5～16 | 63～68 |
Table 4
| Photon energy (kev) | 60 | 88 | 356 |
| Example 1(μ) | 5.14 | 4.04 | 1.02 |
| Example 2(μ) | 5.19 | 4.32 | 1.54 |
Table 5
| Folding strength MPa | Ultimate compression strength MPa | |||
| 3 days | 28 days | 3 days | 28 days | |
| The tap water maintenance | 0.4 | 8.7 | 1.2 | 59.1 |
| 5％MgSO 4The solution maintenance | 0.6 | 9.2 | 1.7 | 65.6 |
Claims (4)
1, a kind of barium cement that contains the barium silicate composition is characterized in that the mineralogical composition of grog is (weight %)
Silicic acid two barium 20～70
Barium silicate calcium 20～70
Iron barium aluminate 0～10
Sulplo-aluminate 0～10
Wustite 0～5.
2, barium cement as claimed in claim 1 is characterized in that said barium silicate calcium chemical formula is Ba
1.55Ca
0.45SiO
4
3, barium cement as claimed in claim 2 is characterized in that said barium composition derives from the witherite raw material.
4, as the described barium cement of one of claim 1 to 3, it is characterized in that grog and 5～15%(weight) conventional high reactivity material and the proper amount of gypsum mix grinding after make cement composition for (weight %)
BaO 50～75 SiO2 10～18
CaO 3～20 Fe2O3 1～8
Al2O3 0.5～5 SO3 0～5。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93115407 CN1099013A (en) | 1993-12-07 | 1993-12-07 | A kind of barium cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93115407 CN1099013A (en) | 1993-12-07 | 1993-12-07 | A kind of barium cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1099013A true CN1099013A (en) | 1995-02-22 |
Family
ID=4991032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93115407 Pending CN1099013A (en) | 1993-12-07 | 1993-12-07 | A kind of barium cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1099013A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408514C (en) * | 2003-09-02 | 2008-08-06 | 北京瑞泰高温材料科技股份有限公司 | Refractory material containing barium oxide |
| CN104016606A (en) * | 2014-06-03 | 2014-09-03 | 青岛理工大学 | A concrete anticorrosion agent |
| CN109748524A (en) * | 2019-03-22 | 2019-05-14 | 济南大学 | A kind of resistance to subzero temperature Anti-radiation type Boron-Based Fuel-Rich barium sulphoaluminate cement clinker |
-
1993
- 1993-12-07 CN CN 93115407 patent/CN1099013A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408514C (en) * | 2003-09-02 | 2008-08-06 | 北京瑞泰高温材料科技股份有限公司 | Refractory material containing barium oxide |
| CN104016606A (en) * | 2014-06-03 | 2014-09-03 | 青岛理工大学 | A concrete anticorrosion agent |
| CN104016606B (en) * | 2014-06-03 | 2016-06-08 | 青岛理工大学 | A kind of concrete antiseptic agent |
| CN109748524A (en) * | 2019-03-22 | 2019-05-14 | 济南大学 | A kind of resistance to subzero temperature Anti-radiation type Boron-Based Fuel-Rich barium sulphoaluminate cement clinker |
| CN109748524B (en) * | 2019-03-22 | 2021-07-16 | 济南大学 | Negative-temperature-resistant anti-radiation boron-containing barium-rich sulphoaluminate cement clinker |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |