CN103241972A - Preparation method for sodium aluminate concrete accelerator - Google Patents
Preparation method for sodium aluminate concrete accelerator Download PDFInfo
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- CN103241972A CN103241972A CN2012100242779A CN201210024277A CN103241972A CN 103241972 A CN103241972 A CN 103241972A CN 2012100242779 A CN2012100242779 A CN 2012100242779A CN 201210024277 A CN201210024277 A CN 201210024277A CN 103241972 A CN103241972 A CN 103241972A
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- sodium aluminate
- hardenfast
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- concrete accelerator
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Abstract
The invention discloses a preparation method for a sodium aluminate concrete accelerator, and belongs to the field of chemical building materials. The concrete accelerator is prepared by using sodium aluminate, polyaluminium sulfate, sodium carbonate, dehydrated gypsum and quicklime as raw materials and through the steps of grinding and screening the raw materials. The preparation method is simple in process, low in production cost and good in product quality. After the sodium aluminate concrete accelerator is added to the concrete, the concrete can be initially solidified in 3-5 minutes and finally solidified in 7-10 minutes, and has low resilient ratio and high long-term strength. A retention rate of 30-day compressive strength can reach higher than 85%. Besides, the sodium aluminate concrete accelerator is non-toxic and odorless, and has no bad influence on physical health of operation staffs.
Description
Technical field
Product of the present invention belongs to the chemical building material field, relates in particular to a kind of compound method of sodium aluminate Hardenfast.
Background technology
Hardenfast is a kind of admixture that can make the rapid setting and harden of concrete in the concrete that mixes, outward appearance is powdery solid or liquid, their effect is the hydration and hardening that accelerates cement, form enough intensity in a short period of time, to guarantee the requirement of special construction, its doping level is generally cement consumption 2%～3%, but can make concrete initial set in 3-5 minute, final set in 7-10 minute, it is indispensable additive in the construction of shotcrete method, its principle of work is: after accelerating chemicals adds concrete, its main component in basic solution rapidly with cement in gypsum reaction generation sodium sulfate, make gypsum lose its original delayed coagulation, thereby cause the rapid aquation of calcium aluminate mineral, and in solution, separate out its hydrated product crystal, thereby cement concrete is condensed rapidly.Sodium aluminate is one of main raw material of concrete batching accelerating chemicals, claims sodium metaaluminate again, and chemical formula is NaAlO2, outward appearance be white, odorless, tasteless, be alkaline solid, the high-temperature fusion product is white powder, and is water-soluble, is insoluble to ethanol, in air, easily absorb moisture content and carbonic acid gas, easily separate out aluminum hydroxide precipitation after the dissolving in the water, because itself is because the hydrolysis of meta-aluminic acid radical ion makes solution show alkalescence, so, its discord alkali effect.Its main application is: 1. the civil engineering work aspect is as the main raw material of Hardenfast; 2. paper industry, this product mix with Tai-Ace S 150 that to use be a kind of good weighting agent; 3. the water purification agent auxiliary agent can be made in water treatment aspect; 4. in petrochemical complex, pharmacy, rubber, printing and dyeing, weaving, Catalyst Production, also have more widely and use.Single sodium aluminate is exactly a kind of Hardenfast, in order to make its rapid hardening better effects if, need to add the part material, the present invention is that a kind of sodium aluminate is the accelerating chemicals of main raw material preparation, with sodium aluminate, polyaluminium sulfate, yellow soda ash, dehydrated gypsum, unslaked lime is raw material, by levigate, sieve to prepare Hardenfast, it is simple that this method has technology, and production cost is low, good product quality, after adding in the concrete, can make concrete initial set in 3-5 minute, final set in 7-10 minute, rebound degree is low, the later strength height, the ultimate compression strength retention rate can reach more than 85% in 30 days, and nonpoisonous and tasteless, and operator's health is had no adverse effects.
Summary of the invention
The problem to be solved in the present invention provides a kind of method of batch preparations sodium aluminate Hardenfast, this agent is to be raw material with sodium aluminate, polyaluminium sulfate, yellow soda ash, dehydrated gypsum, unslaked lime, by levigate, sieve to prepare Hardenfast, it is simple that this method has technology, production cost is low, the advantage of good product quality, and the proportioning raw materials of producing this product use is: sodium aluminate 60%-65%, polyaluminium sulfate 15%-20%, yellow soda ash 7%, dehydrated gypsum 8%, unslaked lime 5%.
The present invention can be achieved through the following technical solutions:
A kind of preparation method of sodium aluminate Hardenfast, its feature is made of following steps:
1. sodium aluminate, polyaluminium sulfate, yellow soda ash, dehydrated gypsum, the unslaked lime with formula ratio mixes earlier, sends into crusher in crushing then.
2. the Hardenfast pulvis after the fragmentation is sieved, the fineness of its particle is the 25-35 micron, should sieve greater than 35 microns particles.
3. when using, earlier powdery sodium aluminate Hardenfast is added water and stir, add getting final product from the spout of sprayed concrete.
The invention has the beneficial effects as follows: the preparation method that a kind of sodium aluminate Hardenfast is provided, this preparation method's technology is simple, and production cost is low, good product quality, after adding in the concrete, can make concrete initial set in 3-5 minute, final set in 7-10 minute, rebound degree is low, the later strength height, the ultimate compression strength retention rate can reach more than 85% in 30 days, and nonpoisonous and tasteless, and operator's health is had no adverse effects.
Embodiment
Embodiment 1
Be that 60% sodium aluminate, 20% polyaluminium sulfate, 7% yellow soda ash, 8% dehydrated gypsum, 5% unslaked lime mix earlier with accounting for total amount, send into crusher in crushing then; Hardenfast after the fragmentation is sieved, and the fineness of its particle is the 25-35 micron, and what particle was bigger should sieve; During use, earlier powdery sodium aluminate Hardenfast is added water and stir, add getting final product from the spout of sprayed concrete.
Embodiment 2
Be that 62.5% sodium aluminate, 17.5% polyaluminium sulfate, 7% yellow soda ash, 8% dehydrated gypsum, 5% unslaked lime mix earlier with accounting for total amount, send into crusher in crushing then; Hardenfast after the fragmentation is sieved, and the fineness of its particle is the 25-35 micron, and what particle was bigger should sieve; During use, earlier powdery sodium aluminate Hardenfast is added water and stir, add getting final product from the spout of sprayed concrete.
Embodiment 3
Be that 65% sodium aluminate, 15% polyaluminium sulfate, 7% yellow soda ash, 8% dehydrated gypsum, 5% unslaked lime mix earlier with accounting for total amount, send into crusher in crushing then; Hardenfast after the fragmentation is sieved, and the fineness of its particle is the 25-35 micron, and what particle was bigger should sieve; During use, earlier powdery sodium aluminate Hardenfast is added water and stir, add getting final product from the spout of sprayed concrete.
Claims (3)
1. the compound method of a sodium aluminate Hardenfast, its composition of raw materials is counted by weight percentage, and comprising: sodium aluminate 60%-65%, polyaluminium sulfate 15%-20%, yellow soda ash 7%, dehydrated gypsum 8%, unslaked lime 5%; It is characterized in that: step 1, sodium aluminate, polyaluminium sulfate, yellow soda ash, dehydrated gypsum, the unslaked lime of formula ratio is mixed earlier, send into crusher in crushing then; Step 2 is sieved the Hardenfast pulvis after the fragmentation, and the fineness of its particle is the 25-35 micron, should sieve greater than 35 microns particles.
2. the compound method of a kind of sodium aluminate Hardenfast according to claim 1, the feature of its step 2 is: the fineness of sodium aluminate Hardenfast particle is 30 microns.
3. the compound method of a kind of sodium aluminate Hardenfast according to claim 1, the using method of its sodium aluminate Hardenfast be, earlier powdery sodium aluminate Hardenfast added water and stir, and adds getting final product from the spout of sprayed concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100242779A CN103241972A (en) | 2012-02-05 | 2012-02-05 | Preparation method for sodium aluminate concrete accelerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100242779A CN103241972A (en) | 2012-02-05 | 2012-02-05 | Preparation method for sodium aluminate concrete accelerator |
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| CN103241972A true CN103241972A (en) | 2013-08-14 |
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| CN2012100242779A Pending CN103241972A (en) | 2012-02-05 | 2012-02-05 | Preparation method for sodium aluminate concrete accelerator |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553406A (en) * | 2013-09-27 | 2014-02-05 | 中国建筑材料科学研究总院 | Alkali and chlorine-free liquid setting accelerator based on industrial polyaluminium sulfate and its preparation method |
| CN103803838A (en) * | 2014-02-27 | 2014-05-21 | 遵义市恒新化工有限公司 | Accelerator |
| CN106061917A (en) * | 2014-02-28 | 2016-10-26 | 公州大学校产学协力团 | Accelerating agent composition for shotcrete comprising rapidly cooled steel reducing slag powder |
| CN106145739A (en) * | 2016-06-27 | 2016-11-23 | 江苏中铁奥莱特新材料股份有限公司 | A kind of environment-friendly type low resilience low-alkali liquid quick-setting agent and preparation method |
| CN106186756A (en) * | 2016-07-07 | 2016-12-07 | 芜湖浩权建筑工程有限公司 | A kind of high performance composite cement mortar and preparation method thereof |
| CN111892323A (en) * | 2020-08-18 | 2020-11-06 | 衡阳市九州建材有限公司 | Organic concrete accelerator |
| CN112321189A (en) * | 2020-11-19 | 2021-02-05 | 深圳港创建材股份有限公司 | Wet-mixed mortar powder quick-drying agent and use method thereof |
| CN112341032A (en) * | 2020-11-19 | 2021-02-09 | 深圳港创建材股份有限公司 | Aluminum ion fluid concrete powder quick-drying agent and use method thereof |
| CN112408841A (en) * | 2020-11-19 | 2021-02-26 | 深圳港创建材股份有限公司 | Aluminate flow state concrete powder quick drying agent and use method thereof |
| CN112408838A (en) * | 2020-11-19 | 2021-02-26 | 深圳港创建材股份有限公司 | Fluidized concrete powder quick-drying agent and use method thereof |
-
2012
- 2012-02-05 CN CN2012100242779A patent/CN103241972A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553406B (en) * | 2013-09-27 | 2016-08-17 | 中国建筑材料科学研究总院 | A kind of alkali-free chlorine-free liquid accelerator based on industrial polymerisation aluminum sulfate and preparation method thereof |
| CN103553406A (en) * | 2013-09-27 | 2014-02-05 | 中国建筑材料科学研究总院 | Alkali and chlorine-free liquid setting accelerator based on industrial polyaluminium sulfate and its preparation method |
| CN103803838A (en) * | 2014-02-27 | 2014-05-21 | 遵义市恒新化工有限公司 | Accelerator |
| CN103803838B (en) * | 2014-02-27 | 2015-08-12 | 遵义市恒新化工有限公司 | A kind of accelerating chemicals |
| CN106061917A (en) * | 2014-02-28 | 2016-10-26 | 公州大学校产学协力团 | Accelerating agent composition for shotcrete comprising rapidly cooled steel reducing slag powder |
| CN106145739B (en) * | 2016-06-27 | 2018-05-04 | 江苏中铁奥莱特新材料股份有限公司 | A kind of environment-friendly type is low to spring back low-alkali liquid quick-setting agent and preparation method |
| CN106145739A (en) * | 2016-06-27 | 2016-11-23 | 江苏中铁奥莱特新材料股份有限公司 | A kind of environment-friendly type low resilience low-alkali liquid quick-setting agent and preparation method |
| CN106186756A (en) * | 2016-07-07 | 2016-12-07 | 芜湖浩权建筑工程有限公司 | A kind of high performance composite cement mortar and preparation method thereof |
| CN111892323A (en) * | 2020-08-18 | 2020-11-06 | 衡阳市九州建材有限公司 | Organic concrete accelerator |
| CN112321189A (en) * | 2020-11-19 | 2021-02-05 | 深圳港创建材股份有限公司 | Wet-mixed mortar powder quick-drying agent and use method thereof |
| CN112341032A (en) * | 2020-11-19 | 2021-02-09 | 深圳港创建材股份有限公司 | Aluminum ion fluid concrete powder quick-drying agent and use method thereof |
| CN112408841A (en) * | 2020-11-19 | 2021-02-26 | 深圳港创建材股份有限公司 | Aluminate flow state concrete powder quick drying agent and use method thereof |
| CN112408838A (en) * | 2020-11-19 | 2021-02-26 | 深圳港创建材股份有限公司 | Fluidized concrete powder quick-drying agent and use method thereof |
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Application publication date: 20130814 |