CN1051716A - A kind of manufacture method of early strengthening agent for solidification of sulfur dregs cement - Google Patents
A kind of manufacture method of early strengthening agent for solidification of sulfur dregs cement Download PDFInfo
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- CN1051716A CN1051716A CN89108563A CN89108563A CN1051716A CN 1051716 A CN1051716 A CN 1051716A CN 89108563 A CN89108563 A CN 89108563A CN 89108563 A CN89108563 A CN 89108563A CN 1051716 A CN1051716 A CN 1051716A
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- CN
- China
- Prior art keywords
- sulfur
- solidification
- cement
- dregs
- early
- Prior art date
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000004568 cement Substances 0.000 title claims abstract description 39
- 239000011593 sulfur Substances 0.000 title claims abstract description 30
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 30
- 238000007711 solidification Methods 0.000 title claims abstract description 29
- 230000008023 solidification Effects 0.000 title claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000005728 strengthening Methods 0.000 title claims abstract description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 16
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 12
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 10
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 10
- 235000011152 sodium sulphate Nutrition 0.000 claims description 10
- 239000000292 calcium oxide Substances 0.000 claims description 8
- 235000012255 calcium oxide Nutrition 0.000 claims description 8
- 235000010288 sodium nitrite Nutrition 0.000 claims description 6
- 229960004418 trolamine Drugs 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- 239000012190 activator Substances 0.000 claims 3
- 150000001875 compounds Chemical class 0.000 claims 3
- FQTCUKQMGGJRCU-UHFFFAOYSA-N n,n-diacetylacetamide Chemical compound CC(=O)N(C(C)=O)C(C)=O FQTCUKQMGGJRCU-UHFFFAOYSA-N 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 229910001653 ettringite Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 235000013399 edible fruits Nutrition 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000003389 potentiating effect Effects 0.000 abstract description 2
- 239000002893 slag Substances 0.000 description 11
- 239000003245 coal Substances 0.000 description 10
- 239000005864 Sulphur Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000006477 desulfuration reaction Methods 0.000 description 5
- 230000023556 desulfurization Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 235000003599 food sweetener Nutrition 0.000 description 3
- 239000003765 sweetening agent Substances 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 150000004683 dihydrates Chemical class 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- HTSGKJQDMSTCGS-UHFFFAOYSA-N 1,4-bis(4-chlorophenyl)-2-(4-methylphenyl)sulfonylbutane-1,4-dione Chemical compound C1=CC(C)=CC=C1S(=O)(=O)C(C(=O)C=1C=CC(Cl)=CC=1)CC(=O)C1=CC=C(Cl)C=C1 HTSGKJQDMSTCGS-UHFFFAOYSA-N 0.000 description 1
- FKLJPTJMIBLJAV-UHFFFAOYSA-N Compound IV Chemical compound O1N=C(C)C=C1CCCCCCCOC1=CC=C(C=2OCCN=2)C=C1 FKLJPTJMIBLJAV-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- LVYZJEPLMYTTGH-UHFFFAOYSA-H dialuminum chloride pentahydroxide dihydrate Chemical compound [Cl-].[Al+3].[OH-].[OH-].[Al+3].[OH-].[OH-].[OH-].O.O LVYZJEPLMYTTGH-UHFFFAOYSA-H 0.000 description 1
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- NLFBCYMMUAKCPC-KQQUZDAGSA-N ethyl (e)-3-[3-amino-2-cyano-1-[(e)-3-ethoxy-3-oxoprop-1-enyl]sulfanyl-3-oxoprop-1-enyl]sulfanylprop-2-enoate Chemical compound CCOC(=O)\C=C\SC(=C(C#N)C(N)=O)S\C=C\C(=O)OCC NLFBCYMMUAKCPC-KQQUZDAGSA-N 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- -1 trolamine compound Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A kind of manufacture method of early strengthening agent for solidification of sulfur dregs cement belongs to the cement additive manufacturing process technology field.Technical essential of the present invention is to mix exciting agent in solidification of sulfur dregs cement in proportion, forms a large amount of high ettringite of intensity in early days to impel it, and then improves the early strength of solidification of sulfur dregs cement.Hardening accelerator manufacturing of the present invention is simple, and material cost is cheap to be easy to get, and the user cheaply goes, and early potent fruit is remarkable for it, solves the critical defect of solidification of sulfur dregs cement effectively, and the solidification of sulfur dregs cement that impels existing environmental benefit to have an economic benefit again is able to widespread use.
Description
The invention belongs to the cement additive manufacturing process technology field.
China is because coal-fired SO at present
2Annual emissions reaches 9,740,000 tons, is the main source that the many regional acid rains of China take place frequently.According to the long-term ruleization of national environment protection science and technology,, still based on coal, account for 70%, and the sulfur-bearing coal reaches more than 40% in China's energy structure to the year two thousand fifty.Therefore, administer SO in the fire coal
2Discharging be the important topic of environmental protection.
The method of coal desulfurization is a lot, mainly contains two big classes: a class is coal-fired preceding desulfurization, as separative production and separative delivery, washing etc.; Another kind of is the desulfurization of burning back, and as stack desulfurization etc., the united states, japan and other countries man adopts this method.Because above-mentioned two kinds of methods all need to increase Special Equipment, once investment is big.General industry uses the temperature of combustion of grate furnace and coal-powder boiler all more than 1100 ℃, and under this temperature, vitriol in the coal and sulfide all will become SO
2Escape into atmosphere, contaminate environment.The circulation bed boiling furnace combustion temperature that heat energy system of Tsing-Hua University improves and promotes is 800～950 ℃; Also develop a kind of novel sweetening agent, in coal, add this sweetening agent, then in combustion processes, form Undec anhydrous calciumsulphate, SO that can 80% in the coal is above
3Be fixed in the slag, thereby prevent or substantially minimize SO
2To atmospheric pollution.But owing to add sweetening agent, coal burning back bed drain purge increases more than 25%, even low-ash fat coal, bed drain purge is about 30% at least.These contain a large amount of SO
3Solid sulphur slag such as untimely processing, certainly will cause second environmental pollution again.
Department of civil engineering, Tsinghua university is developed a kind of solidification of sulfur dregs cement, and it is by the solid sulphur slag and the Portland clinker that contain a large amount of SO, is mixed in proportion, grinding, makes mark and support 62～110% the qualified solidification of sulfur dregs cement that 28 days intensity reaches clinker strength.Administer coal desulfurization effectively to the secondary pollution that environment causes, turn waste into wealth, remarkable economic efficiency and remarkable environmental benefit are arranged.Gu yet the solidification of sulfur dregs cement that sulphur slag and Portland clinker are prepared, early strength is on the low side, and this shortcoming will prolong the production cycle of member, influence speed of application and use range.
Purpose of the present invention is intended to propose a kind of special-purpose hardening accelerator that improves the solidification of sulfur dregs cement early strength, overcomes the weak point of existing solidification of sulfur dregs cement, and the solidification of sulfur dregs cement that its existing environmental benefit is had an economic benefit again is more widely used.
Major technique characteristics of the present invention are to be to give full play to II-CaSO in the solid sulphur slag
4Potentiality, according to II-CaSO
4(with SO
3Meter) how much are content and other component content, in solidification of sulfur dregs cement, mix Sodium Nitrite, trolamine, sodium sulfate or the agent of unslaked lime equal excitation respectively in proportion, impelling its early stage high ettringite of a large amount of intensity that forms, and then improve the early strength of solidification of sulfur dregs cement.Gu SO in the sulphur slag
3The accent of cement is coagulated the different shape that exists and intensity plays a different role.Because the SO in the solid sulphur slag
3Mainly be II-CaSO with indissoluble
4Form exists, and its dissolution rate is far below dihydrate gypsum.Can improve its dissolution rate after adding exciting agent, to impel the more ettringite of its early stage formation.Because basicity is on the low side in the solidification of sulfur dregs cement, the tricalcium aluminate content that forms ettringite is also lower, so even SO
3Total amount surpasses 3.5%(can reach 4.6%), still can guarantee good stability of cement and normal time of coagulation.
Advantage of the present invention: hardening accelerator is made simple, material cost is cheap to be easy to get, and the user cheaply goes, and early potent fruit is remarkable for it, solve the critical defect of solidification of sulfur dregs cement effectively, the solidification of sulfur dregs cement that impels existing environmental benefit to have an economic benefit again is able to widespread use.
Will be further described below task proposed by the invention.
Hardening accelerator of the present invention divides four kinds of models, to be applicable to solidification of sulfur dregs cement II-CaSO
4With SO
3The difference of meter content.As solidification of sulfur dregs cement II-CaSO
4With SO
3Meter content is 9～12% o'clock, can mix with 0.2～2% Sodium Nitrite and 0.01～0.1% trolamine compound and must I type hardening accelerator.It can make cement mark support 122～161%, 7 days intensity that 3 days intensity reaches the person of not mixing to reach 114～153%, reached 100～113% in 28 days.
As solidification of sulfur dregs cement II-CaSO
4With SO
3Meter content is 6～9% o'clock, 0.5～2% sodium sulfate be can mix or sodium sulfate and the compound II type hardening accelerator of making of I type hardening accelerator mixed with 0.5～2%, it can make cement mark support 3 days intensity, and to reach 132～142%, 7 days of the person of not mixing be to reach 103～104% in 110%, 28 day.
II-CaSO in solidification of sulfur dregs cement
4With SO
3Count at 3～6% o'clock, except that in order to guarantee normally must to add time of coagulation 0.5～2% the dihydrate gypsum, mix the sodium sulfate of 1～3% sodium sulfate or 1～3% or 1～3% sodium sulfate and the compound III type hardening accelerator of making of I type hardening accelerator again, it can make the foster 3 days intensity of cement mark reach the person's of not mixing 132～152%, reach 114～130%, 28 days in 7 days and reach 98～104%.
The fCaO sum is less than 5% in CaO and Portland clinker in the solid sulphur slag, then can mix below 5% unslaked lime respectively with I, II, the compound IV early strengthening agent for solidification of sulfur dregs cement of making of III early strengthening agent for solidification of sulfur dregs cement, it can make three days foster intensity of mark of cement reach the person's of not mixing 144～138%, reach 111～117%, 28 days in 7 days and reach 98～108%.
Embodiment:
1. starting material
1. consolidate II-CaSO in the sulphur slag
4Content is (with SO
3The meter) and fCaO content see Table 1.
| Sample number | g1 | g2 | g3 |
| SO 3(％） | 11.45 | 6.69 | 4.21 |
| fCaO（％） | 2.36 | 0.97 | 2.40 |
2. Na
2SO
4Technical pure
3. Na
2NO
2Technical pure
4. trolamine chemical pure
5. effective 50% effective CaO of unslaked lime＜80%
6. Portland clinker, the cement mill, Yichang City produces.Y
1Y
2Be 425 ".
2. solidification of sulfur dregs cement proportioning and corresponding hardening accelerator see Table 2.
*: O person is the person that do not mix hardening accelerator; Z person is the person that mixes hardening accelerator.
*: this g sample is treated solid sulphur slag.
3. the volume effects that flows slag cement hardening accelerator admittedly sees Table 3.
Claims (3)
1, a kind of manufacture method of early strengthening agent for solidification of sulfur dregs cement is characterized in that at II-CaSO
4Mix the compound activator or the sodium sulfate exciting agent of a small amount of Sodium Nitrite and triacetamide in the solidification of sulfur dregs cement of different content in proportion.
2, early strengthening agent for solidification of sulfur dregs cement according to claim 1 is characterized in that said compound activator is to be composited by sodium sulfate and Sodium Nitrite and trolamine.
3, early strengthening agent for solidification of sulfur dregs cement according to claim 1 is characterized in that said compound activator is by unslaked lime and sodium sulfate, or unslaked lime and Sodium Nitrite and trolamine, or unslaked lime and sodium sulfate, Sodium Nitrite and trolamine are composited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89108563A CN1051716A (en) | 1989-11-16 | 1989-11-16 | A kind of manufacture method of early strengthening agent for solidification of sulfur dregs cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89108563A CN1051716A (en) | 1989-11-16 | 1989-11-16 | A kind of manufacture method of early strengthening agent for solidification of sulfur dregs cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1051716A true CN1051716A (en) | 1991-05-29 |
Family
ID=4857622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89108563A Pending CN1051716A (en) | 1989-11-16 | 1989-11-16 | A kind of manufacture method of early strengthening agent for solidification of sulfur dregs cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1051716A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329336C (en) * | 2005-09-06 | 2007-08-01 | 梅县五彩涂料厂 | Cement early strength agent and its prepn |
| CN104326722A (en) * | 2014-10-10 | 2015-02-04 | 厦门市建筑科学研究院集团股份有限公司 | Solid sulfur ash fire prevention and extinguishing grouting material and preparation method thereof |
| CN109678381A (en) * | 2019-02-22 | 2019-04-26 | 武汉理工大学 | A kind of high resistance to corrosion portland cement early strength agent and preparation method thereof |
-
1989
- 1989-11-16 CN CN89108563A patent/CN1051716A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329336C (en) * | 2005-09-06 | 2007-08-01 | 梅县五彩涂料厂 | Cement early strength agent and its prepn |
| CN104326722A (en) * | 2014-10-10 | 2015-02-04 | 厦门市建筑科学研究院集团股份有限公司 | Solid sulfur ash fire prevention and extinguishing grouting material and preparation method thereof |
| CN109678381A (en) * | 2019-02-22 | 2019-04-26 | 武汉理工大学 | A kind of high resistance to corrosion portland cement early strength agent and preparation method thereof |
| CN109678381B (en) * | 2019-02-22 | 2021-03-16 | 武汉理工大学 | High-corrosion-resistance portland cement early strength agent and preparation method thereof |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |