CN102910852A - Coagulant for super sulfate cement - Google Patents
Coagulant for super sulfate cement Download PDFInfo
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- CN102910852A CN102910852A CN2012104086375A CN201210408637A CN102910852A CN 102910852 A CN102910852 A CN 102910852A CN 2012104086375 A CN2012104086375 A CN 2012104086375A CN 201210408637 A CN201210408637 A CN 201210408637A CN 102910852 A CN102910852 A CN 102910852A
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- lithium slag
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Abstract
The invention discloses a coagulant for cement, and in particular relates to a coagulant for super sulfate cement, and the coagulant comprises the following components in parts by weight: A. 60-90 parts of lithium slag and B. 10-40 parts of high aluminum admixture, wherein the total quality of three active ingredients including active SiO2, active Al2O3 and active CaO in the lithium slag accounts for more than 80% of the mass content of the lithium slag, and the mass content of the Al2O3 in the high aluminum admixture is 40-80% of the content of the high aluminum admixture. The coagulant for the super sulfate cement can be used for effectively shortening the initial setting time and the final setting time of the super sulfate cement, thus accelerating the early stage strength development and being better widely applied.
Description
Technical field
The present invention relates to a kind of accelerator for cement slurry, be specifically related to a kind of setting accelerator for ultra-sulphate cement.
Background technology
Cement is a kind of hydraulicity inorganic coagulation material, mostly is Powdered, after Qi Jiashui stirs into slurry, can harden in air or water, simultaneously also can be firmly together cementing solid materials such as sandstones.Ultra-sulphate cement belongs to a kind of of cement, also is slag sulphate cement, and it is a kind of slag by 75-85%, and the alkaline components of the vitriol of 10-20% (activator) class and 1-5% mixes and the hydraulic cementing materials that makes.
Ultra-sulphate cement is because what just adopt is sulphate activation, and is aided with the principle that alkaline matter excites, so it has the sulphate-corrosion resistance energy of excellence, and clinker dosage is few, CO
2The advantages such as quantity discharged is low, and is low in the pollution of the environment.
Ultra-sulphate cement generally can adopt dihydrate gypsum when adopting sulphate activation, anhydrite, and phosphogypsum, fluorgypsums etc. are as the vitriol activator; Because the add-on of vitriol activator is larger in the ultra-sulphate cement, thereby causes its presetting period, final setting time obviously is longer than Portland cement.For example, when adopting anhydrite as the vitriol activator, the about 10h of the final setting time of gained ultra-sulphate cement; When adopting phosphogypsum as the vitriol activator, the initial set of gained ultra-sulphate cement and final setting time are all more than 24h.
In view of the foregoing, existing ultra-sulphate cement generally has initial set and final setting time is longer, causes the lower defective of early strength development, has therefore had a strong impact on the application of such cement.
Summary of the invention
In view of this, the invention provides a kind of setting accelerator for ultra-sulphate cement, it can shorten presetting period and the final setting time of ultra-sulphate cement effectively, thereby accelerates its early stage strength development, promotes its widespread use.
For solving above technical problem, technical scheme of the present invention is to adopt the lithium slag to be used for promoting the setting accelerator of ultra-sulphate cement setting and harden as component.
Preferably, described lithium slag and high alumina adulterant are jointly as the setting accelerator of additive for the preparation of promotion ultra-sulphate cement setting and harden.
Compared with prior art, the principle of the invention is as follows:
The present invention adopts the lithium slag as the setting accelerator of additive for the preparation of promotion ultra-sulphate cement setting and harden; Lithium slag of the present invention is the industrial residue that produces in the Production By Sulfuric Acid Process Quilonum Retard process, is a kind of cement or concrete adulterant with vesicular structure of larger internal surface area.Utilize the cement of lithium slag preparation or concrete to have that hydration heat is low, the characteristics of good water-retaining property, and the lithium slag can obviously improve the interface structure of adulterant slurry, improve mechanical property and the endurance quality of slurry.
Abundant research by the inventor is found, the lithium slag can be used as the setting accelerator of ultra-sulphate cement, after in ultra-sulphate cement, adding the lithium slag, can effectively shorten presetting period and the final setting time of ultra-sulphate cement, thereby accelerate the early stage strength development of gained ultra-sulphate cement, promote its widespread use.Study discovery through the inventor, contain a large amount of activating oxide compositions in the lithium slag, especially active SiO
2, active A l
2O
3And active CaO, above-mentioned three kinds of activeconstituentss account for more than 80% of lithium slag amount content; In the lithium slag contained above-mentioned three kinds of activeconstituentss can with ultra-sulphate cement in the jointly sclerosis under the effect of water and air of vitriol activator, thereby accelerate the hydration and hardening of ultra-sulphate cement.
Further, the present invention preferably adopts lithium slag and high alumina adulterant is come mode for the preparation of the setting accelerator that promotes the ultra-sulphate cement hydration and hardening as additive jointly; Common interpolation lithium slag and high alumina adulterant can improve the short solidifying effect of setting accelerator effectively in the setting accelerator of ultra-sulphate cement.
High alumina adulterant of the present invention can be at least a all kinds of aluminate gelled materials such as bauxitic clay, alunite etc. and ferro-aluminate cement, aluminosulfate cement that are selected from.
The present invention also aims to provide a kind of setting accelerator for ultra-sulphate cement, described setting accelerator for ultra-sulphate cement includes following component, each component by weight:
A, 60-90 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 10-40 part high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
Contain 60-90 weight part lithium slag in the setting accelerator of the present invention, active SiO in the described lithium slag
2, active A l
2O
3With the mass content of active CaO be more than 80% and 10-40 weight part high alumina adulterant; Setting accelerator of the present invention adopts the hydration and hardening of the promotion ultra-sulphate cement that the ratio of above-mentioned A, B component can be better, thereby further shorten presetting period and the final setting time of ultra-sulphate cement, accelerate the early stage strength development of gained ultra-sulphate cement, promote its widespread use.
Preferably, the high alumina adulterant is at least a all kinds of aluminate gelled materials such as the natural resource such as bauxitic clay, alunite or ferro-aluminate cement, aluminosulfate cement that are selected from the described B component.
Preferably, described setting accelerator for ultra-sulphate cement includes following component, each component by weight:
A, 80-90 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 10-20 part high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
Preferably, described setting accelerator for ultra-sulphate cement includes following component, each component by weight:
A, 70-80 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 20-30 part high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
Preferably, described setting accelerator for ultra-sulphate cement includes following component, each component by weight:
A, 60-70 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 30-40 part high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
Further, preferably to adopt described B component high alumina adulterant be at least a all kinds of aluminate gelled materials such as the natural resource such as bauxitic clay, alunite or ferro-aluminate cement, aluminosulfate cement that are selected to the setting accelerator for ultra-sulphate cement of the present invention.The present invention preferably adopts above-mentioned four kinds of high alumina adulterant kinds compared to other high alumina adulterant, and it has better short solidifying effect.
Further, setting accelerator for ultra-sulphate cement of the present invention preferably adopts described A component lithium slag can also include the active oxidation lithium, Lithium Oxide 98min is compared to calcium oxide, the former easier generation hydration reaction, thus can further accelerate the aquation of cement; Activated alumina, calcium oxide etc. can react with silicon-dioxide better, promote the formation of calcium aluminate class early hydration product.
Further, the setting accelerator for ultra-sulphate cement of the present invention preferably adopts described setting accelerator for ultra-sulphate cement to include following component, each component by weight:
A, 80-90 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 10-20 part high alumina adulterant, high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
After the present invention preferably adopted above-mentioned enforcement ratio, the gained setting accelerator had better short solidifying effect for the ultra-sulphate cement for preparing as the vitriol activator with anhydrite and dihydrate gypsum.
Further, the setting accelerator for ultra-sulphate cement of the present invention preferably adopts described setting accelerator for ultra-sulphate cement to include following component, each component by weight:
A, 70-80 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 20-30 part high alumina adulterant, high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
After the present invention preferably adopted above-mentioned enforcement ratio, the gained setting accelerator had better short solidifying effect for the ultra-sulphate cement for preparing as the vitriol activator with calcined phosphogypsum; Better, after the present invention adopted above-mentioned enforcement ratio, the ultra-sulphate cement that the gained setting accelerator prepares as the vitriol activator for the phosphogypsum that is used in 200-800 ℃ of calcining had better short solidifying effect.
Further, the setting accelerator for ultra-sulphate cement of the present invention preferably adopts described setting accelerator for ultra-sulphate cement to include following component, each component by weight:
A, 60-70 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 30-40 part high alumina adulterant, high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
After the present invention preferably adopted above-mentioned enforcement ratio, the gained setting accelerator had better short solidifying effect for the ultra-sulphate cement for preparing as the vitriol activator with phosphogypsum.
The preparation method of the setting accelerator for ultra-sulphate cement of the present invention can be the common method of existing preparation setting accelerator, is about to it and is prepared into pulvis or other solid preparations etc.; Its preparation method can be existing co-grinding preparation method.Setting accelerator for ultra-sulphate cement of the present invention in use, its massfraction that accounts for cement can be 1-10%.
Embodiment
In order to make those skilled in the art understand better technical scheme of the present invention, the present invention is described in further detail below in conjunction with specific embodiment.
Embodiment 1
To get embodiment 1 behind the lithium ground-slag mill, volume accounts for 10% of ultra-sulphate cement massfraction.
Embodiment 2
Take by weighing each material according to following weight ratio:
A, 60 parts of lithium slags, B, 40 parts of high alumina adulterants;
The material of weighing gained is carried out getting embodiment 7 behind the combined grinding, and volume accounts for 2% of ultra-sulphate cement massfraction.
Embodiment 3
Take by weighing each material according to following weight ratio:
A, 70 parts of lithium slags, B, 30 parts of high alumina adulterants;
The material of weighing gained is carried out getting embodiment 3 behind the combined grinding, and volume accounts for 7% of ultra-sulphate cement massfraction.
Embodiment 4
Take by weighing each material according to following weight ratio:
A, 75 parts of lithium slags, B, 25 parts of high alumina adulterants;
The material of weighing gained is carried out getting embodiment 4 behind the combined grinding, and volume accounts for 3% of ultra-sulphate cement massfraction.
Embodiment 5
Take by weighing each material according to following weight ratio:
A, 80 parts of lithium slags, B, 20 parts of high alumina adulterants;
The material of weighing gained is carried out getting embodiment 5 behind the combined grinding, and volume accounts for 7% of ultra-sulphate cement massfraction.
Embodiment 6
Take by weighing each material according to following weight ratio:
A, 85 parts of lithium slags, B, 15 parts of high alumina adulterants;
The material of weighing gained is carried out getting embodiment 6 behind the combined grinding, and volume accounts for 8% of ultra-sulphate cement massfraction.
Embodiment 7
To get embodiment 2 behind the high alumina adulterant combined grinding, volume accounts for 2% of ultra-sulphate cement massfraction.
Embodiment 8
Take by weighing each material according to following weight ratio:
A, 90 parts of lithium slags, B, 10 parts of high alumina adulterants;
The material of weighing gained is carried out getting embodiment 8 behind the combined grinding, and volume accounts for 3% of ultra-sulphate cement massfraction.
Embodiment 9
Take by weighing each material according to following weight ratio:
A, 95 parts of lithium slags, B, 5 parts of high alumina adulterants;
The material of weighing gained is carried out getting embodiment 9 behind the combined grinding, and volume accounts for 5% of ultra-sulphate cement massfraction.
With above-mentioned gained embodiment 1-9 respectively with phosphogypsum as the ultra-sulphate cement (category-A) of vitriol activator, with the ultra-sulphate cement (category-B) of modified ardealite as the vitriol activator, and use anhydrite, dihydrate gypsum mixes mutually as the ultra-sulphate cement (C class) of vitriol activator, adopt GB/T175-2007 " general purpose portland cement " alignment to carry out time of coagulation and strength trial, and not add the A of any setting accelerator, B, C three class ultra-sulphate cements are as the blank group, monitor respectively presetting period of each embodiment and blank group cement and final setting time with and 3 days and 28 days intensity, acquired results is listed in the table one.
Table one
Only be preferred implementation of the present invention below, should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with the claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. the lithium slag is characterized in that as the application of setting accelerator: described lithium slag is as the setting accelerator of component for the preparation of promotion ultra-sulphate cement setting and harden.
2. application according to claim 1 is characterized in that: described lithium slag and high alumina adulterant are jointly as the setting accelerator of component for the preparation of promotion ultra-sulphate cement setting and harden.
3. application according to claim 2 is characterized in that: described high alumina is mixed and is contained Al in the material
2O
3Mass content be 40%-80%.
4. application according to claim 2 is characterized in that: described high alumina adulterant is at least a bauxitic clay, alunite, aluminosulfate cement, the ferro-aluminate cement of being selected from.
5. setting accelerator that is used for ultra-sulphate cement, it is characterized in that: described setting accelerator for ultra-sulphate cement includes following component, each component by weight:
A, 60-90 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 10-40 part high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
6. the setting accelerator for ultra-sulphate cement according to claim 5, it is characterized in that: described setting accelerator for ultra-sulphate cement includes following component, each component by weight:
A, 80-90 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 10-20 part high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
7. the setting accelerator for ultra-sulphate cement according to claim 5, it is characterized in that: described setting accelerator for ultra-sulphate cement includes following component, each component by weight:
A, 70-80 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 20-30 part high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
8. the setting accelerator for ultra-sulphate cement according to claim 5, it is characterized in that: described setting accelerator for ultra-sulphate cement includes following component, each component by weight:
A, 60-70 part lithium slag, active SiO in the described lithium slag
2, active A l
2O
3Account for more than 80% of lithium slag amount content with three kinds of activeconstituentss of active CaO;
B, 30-40 part high alumina adulterant, Al in the described high alumina adulterant
2O
3Mass content be 40%-80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408637.5A CN102910852B (en) | 2012-10-24 | 2012-10-24 | Coagulant for super sulfate cement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408637.5A CN102910852B (en) | 2012-10-24 | 2012-10-24 | Coagulant for super sulfate cement |
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| CN102910852B CN102910852B (en) | 2014-03-12 |
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Cited By (8)
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| CN105967541A (en) * | 2016-05-11 | 2016-09-28 | 武汉理工大学 | Sulphate aluminum cement coagulant and preparation method thereof |
| CN108395138A (en) * | 2018-04-08 | 2018-08-14 | 赵顺全 | A kind of accelerator for cement slurry |
| CN109942211A (en) * | 2019-04-22 | 2019-06-28 | 郑州升达经贸管理学院 | A method of improving gypsum-slag cements early strength |
| CN113121137A (en) * | 2021-05-20 | 2021-07-16 | 福建新华夏建工集团有限公司 | Method for exciting activity of cement mixed material by using sulfate |
| CN113185172A (en) * | 2021-04-20 | 2021-07-30 | 浙江交工集团股份有限公司 | Bi-component accelerator, wet-spraying concrete and preparation method thereof |
| CN114988729A (en) * | 2022-06-28 | 2022-09-02 | 湖南科技大学 | Method for improving flexural strength of belite sulphoaluminate cement and application thereof |
| CN115772024A (en) * | 2022-12-16 | 2023-03-10 | 河北工业大学 | Large-doped lithium slag quick-setting and quick-hardening wallboard and manufacturing method thereof |
| CN115806396A (en) * | 2022-07-06 | 2023-03-17 | 山东高速工程检测有限公司 | Super-retarding high-breaking-pressure-ratio super-sulfur cement |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967541A (en) * | 2016-05-11 | 2016-09-28 | 武汉理工大学 | Sulphate aluminum cement coagulant and preparation method thereof |
| CN105967541B (en) * | 2016-05-11 | 2017-12-29 | 武汉理工大学 | A kind of sulphate aluminium cement coagulant and preparation method thereof |
| CN108395138A (en) * | 2018-04-08 | 2018-08-14 | 赵顺全 | A kind of accelerator for cement slurry |
| CN109942211A (en) * | 2019-04-22 | 2019-06-28 | 郑州升达经贸管理学院 | A method of improving gypsum-slag cements early strength |
| CN113185172A (en) * | 2021-04-20 | 2021-07-30 | 浙江交工集团股份有限公司 | Bi-component accelerator, wet-spraying concrete and preparation method thereof |
| CN113121137A (en) * | 2021-05-20 | 2021-07-16 | 福建新华夏建工集团有限公司 | Method for exciting activity of cement mixed material by using sulfate |
| CN114988729A (en) * | 2022-06-28 | 2022-09-02 | 湖南科技大学 | Method for improving flexural strength of belite sulphoaluminate cement and application thereof |
| CN114988729B (en) * | 2022-06-28 | 2023-02-28 | 湖南科技大学 | Method for improving flexural strength of belite sulphoaluminate cement and application thereof |
| CN115806396A (en) * | 2022-07-06 | 2023-03-17 | 山东高速工程检测有限公司 | Super-retarding high-breaking-pressure-ratio super-sulfur cement |
| CN115806396B (en) * | 2022-07-06 | 2023-11-17 | 山东高速工程检测有限公司 | Super-retarding high-folding-pressure-ratio super-sulfur cement |
| CN115772024A (en) * | 2022-12-16 | 2023-03-10 | 河北工业大学 | Large-doped lithium slag quick-setting and quick-hardening wallboard and manufacturing method thereof |
| CN115772024B (en) * | 2022-12-16 | 2023-09-22 | 河北工业大学 | High-doping-amount lithium slag quick-setting and quick-hardening wallboard and manufacturing method thereof |
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| CN102910852B (en) | 2014-03-12 |
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Address after: 620800 Qinglong Economic Development Zone, Pengshan District, Meishan City, Sichuan Province Patentee after: China Construction West Construction New Material Technology Co., Ltd. Address before: 620800 Qinglong Economic Development Zone, Pengshan District, Meishan City, Sichuan Province Patentee before: CCT COMMODITY CONCRETE MEISHAN NEW MATERIALS CO., LTD. |