CN109053002A - A kind of preparation method of high hydration activity silica bead - Google Patents
A kind of preparation method of high hydration activity silica bead Download PDFInfo
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- CN109053002A CN109053002A CN201810984939.4A CN201810984939A CN109053002A CN 109053002 A CN109053002 A CN 109053002A CN 201810984939 A CN201810984939 A CN 201810984939A CN 109053002 A CN109053002 A CN 109053002A
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- Prior art keywords
- waterglass
- polycrystalline silicon
- silica
- alkaline residue
- waste material
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- 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
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Silicon Compounds (AREA)
Abstract
The present invention relates to cement raw material preparation technical field more particularly to a kind of preparation methods of high hydration activity silica bead.This method makes the sodium metasilicate hydrate transformations in waterglass alkaline residue be sodium carbonate and silica, this silica is that superfine powder is reacted with the direct of gas phase, crystallization degree is lower, and reactivity is higher, and original silica in waterglass alkaline residue is also the product after 1300-1500 DEG C of chilling；High-temperature gas makes the hydrogen peroxide in polycrystalline silicon powder waste material be decomposed into water and oxygen simultaneously, is no longer result in concrete expansion, and selective oxidation of the polycrystalline silicon wastes in high-temperature gas improves its reactivity.The granularity of waterglass alkaline residue is mostly in 10-30 μm after grinding, and the granularity of polycrystalline silicon powder waste material is mostly in 1-3 μm, and the collocation of the two optimizes the final grain composition of product, improves the performance of high hydration activity silica bead.
Description
Technical field
The present invention relates to cement raw material preparation technical field more particularly to a kind of preparation sides of high hydration activity silica bead
Method.
Background technique
With further strengthening for environmental protection requirement, the comprehensive utilization of various trade wastes has obtained extensive pass
Note.The industrial residues such as flyash, slag, steel slag are because discharge amount is especially paid close attention to greatly, and comprehensive utilization ratio is continuously improved, at present
Up to 100%, the comprehensive utilization ratio of flyash and steel slag is also promoted the comprehensive utilization ratio of slag steadily.And some non-mainstream works
Industry waste residue is less to its comprehensive utilizating research because yield is relatively low, and discharge causes serious burden to environment.
Waterglass alkaline residue is the sediment produced after solid-solution in waterglass production process, and sediment is mainly by crystalline state
Silica and silicic acid sodium hydrate composition, there are also part calcium silicates and calcium hydroxides.This industrial residue grindability is preferable, fits
It is preferably prepared into powder, but since silicic acid sodium hydrate can accelerate the condensation of portland cement to harden, makes cement setting time substantially
Degree shortens, and reduces the 28d intensity of cement, it is difficult to be applied to be applied to water in concrete or as mixing material directly as admixture
In mud production.And contain a large amount of sodium oxide molybdena in silicic acid sodium hydrate, therefore this industrial residue is also not suitable for siliceous raw material
It prepares raw material and enters kiln calcining, the comprehensive utilization ratio of this industrial residue still approaches and zero so far.
Polysilicon enterprise can generate a large amount of waste water in process of production, and a large amount of silicon powder can be remained in these waste water,
Granularity is in micron order and submicron order section, and exists mostly in the form of unformed, in the treatment process of waste water, due to making
With Fenton reagent, thus in silicon powder residual fraction hydrogen peroxide.The purity of remaining silicon powder elementary silicon is general in waste water
It is 97% or so, has been mixed into other metallic elements such as Al, Fe, Ca during processing, has been difficult to recycle the original as polysilicon
Material.Cement concrete is the preferred process approach of solid waste, it is relatively low to the stability requirement of solid waste and
Treating capacity is big, can significantly receive solid waste.But since hydrogen peroxide remaining in silicon powder can discharge oxygen, cause
Concrete expansion, therefore the silicon powder waste material of polysilicon enterprise is also dfficult to apply in cement concrete so far.
A kind of preparation method of high hydration activity silica bead of the present invention, this method make the silicic acid in waterglass alkaline residue
Sodium hydrate is changed into sodium carbonate and silica, this silica is that superfine powder is reacted with the direct of gas phase, crystallization degree
Lower, reactivity is higher, and original silica in waterglass alkaline residue is also the product after 1300-1500 DEG C of chilling, and two
Defect is more in silica crystal, and reactivity is also higher than the silica in nature；High-temperature gas makes polycrystalline silicon powder simultaneously
Hydrogen peroxide in waste material is decomposed into water and oxygen, is no longer result in concrete expansion, and polycrystalline silicon wastes are in high-temperature gas
Selective oxidation improves its reactivity.The granularity of waterglass alkaline residue is mostly in 10-30 μm after grinding, and polycrystalline silicon powder waste material
Granularity be mostly in 1-3 μm, the collocation of the two optimizes the final grain composition of product, improves the performance of product.Waste material
In no longer contain the silicic acid sodium hydrate and hydrogen peroxide unfavorable to concrete strength, make the lower waterglass alkaline residue of utilization rate and
Polycrystalline silicon powder waste material has obtained good application.
Summary of the invention
In order to overcome defect present in background technique, the technical solution adopted by the present invention to solve the technical problems is:
A kind of preparation method of high hydration activity silica bead, it is characterised in that the steps include:
A, waterglass alkaline residue and polycrystalline silicon powder waste material are added in vertical pulverizer simultaneously according to weight ratio 3-4:1, to vertical
Blowing temp is that 500-600 DEG C of carbon dioxide accounts for 15-20%(percent by volume in flour mill) hot wind；
B, the gas of the carbon dioxide in vertical pulverizer is sufficiently reacted with waterglass alkaline residue, so that the silicic acid in waterglass alkaline residue
Sodium hydrate is changed into sodium carbonate and silica, this silica is that superfine powder is reacted with the direct of gas phase, crystallization degree
Lower, reactivity is higher；
C, the hydrogen peroxide in polycrystalline silicon powder waste material is made to be decomposed into water and oxygen simultaneously into the hot wind in vertical pulverizer, no
Lead to concrete expansion again, so that selective oxidation of the polycrystalline silicon wastes in high-temperature gas improves its reactivity；
D, the granularity of waterglass alkaline residue is 10-30 μm after vertical pulverizer grinding, the micro- 1-3 μ of the granularity of polycrystalline silicon powder waste material
The collocation of m, waterglass alkaline residue and polycrystalline silicon powder waste material optimizes the final grain composition of product, improves the performance of product；
E, by material that step d is prepared by fineness be 45 μm tail over control after, form high hydration activity silica bead.
Preferred incorporation of the high hydration activity silica bead in cement is the 10-20% of cement total weight.
A kind of preparation method of high hydration activity silica bead of the present invention, this method make the silicic acid in waterglass alkaline residue
Sodium hydrate is changed into sodium carbonate and silica, this silica is that superfine powder is reacted with the direct of gas phase, crystallization degree
Lower, reactivity is higher, and original silica in waterglass alkaline residue is also the product after 1300-1500 DEG C of chilling, and two
Defect is more in silica crystal, and reactivity is also higher than the silica in nature；High-temperature gas makes polycrystalline silicon powder simultaneously
Hydrogen peroxide in waste material is decomposed into water and oxygen, is no longer result in concrete expansion, and polycrystalline silicon wastes are in high-temperature gas
Selective oxidation improves its reactivity.The granularity of waterglass alkaline residue is mostly in 10-30 μm after grinding, and polycrystalline silicon powder waste material
Granularity be mostly in 1-3 μm, the collocation of the two optimizes the final grain composition of product, improves the performance of product.Waste material
In no longer contain the silicic acid sodium hydrate and hydrogen peroxide unfavorable to concrete strength, make the lower waterglass alkaline residue of utilization rate and
Polycrystalline silicon powder waste material has obtained good application.
Specific embodiment
Specific embodiment one, a kind of preparation method of high hydration activity silica bead, it is characterised in that the steps include:
A, waterglass alkaline residue and polycrystalline silicon powder waste material are added in vertical pulverizer simultaneously according to weight ratio 3-4:1, to vertical
Blowing temp is that 500 DEG C of carbon dioxide account for 15%(percent by volume in flour mill) hot wind；
B, the gas of the carbon dioxide in vertical pulverizer is sufficiently reacted with waterglass alkaline residue, so that the silicic acid in waterglass alkaline residue
Sodium hydrate is changed into sodium carbonate and silica, this silica is that superfine powder is reacted with the direct of gas phase, crystallization degree
Lower, reactivity is higher；
C, the hydrogen peroxide in polycrystalline silicon powder waste material is made to be decomposed into water and oxygen simultaneously into the hot wind in vertical pulverizer, no
Lead to concrete expansion again, so that selective oxidation of the polycrystalline silicon wastes in high-temperature gas improves its reactivity；
D, the granularity of waterglass alkaline residue is 10-30 μm after vertical pulverizer grinding, the micro- 1-3 μ of the granularity of polycrystalline silicon powder waste material
The collocation of m, waterglass alkaline residue and polycrystalline silicon powder waste material optimizes the final grain composition of product, improves the performance of product；
E, by material that step d is prepared by fineness be 45 μm tail over control after, form high hydration activity silica bead.
Incorporation of the high hydration activity silica bead in cement is the 10-20% of cement total weight.
A kind of specific embodiment two, preparation method of high hydration activity silica bead, the steps include:
A, waterglass alkaline residue and polycrystalline silicon powder waste material are added in vertical pulverizer simultaneously according to weight ratio 3-4:1, to vertical
Blowing temp is that 550 DEG C of carbon dioxide account for 18%(percent by volume in flour mill) hot wind；
B, the gas of the carbon dioxide in vertical pulverizer is sufficiently reacted with waterglass alkaline residue, so that the silicic acid in waterglass alkaline residue
Sodium hydrate is changed into sodium carbonate and silica, this silica is that superfine powder is reacted with the direct of gas phase, crystallization degree
Lower, reactivity is higher；
C, the hydrogen peroxide in polycrystalline silicon powder waste material is made to be decomposed into water and oxygen simultaneously into the hot wind in vertical pulverizer, no
Lead to concrete expansion again, so that selective oxidation of the polycrystalline silicon wastes in high-temperature gas improves its reactivity；
D, the granularity of waterglass alkaline residue is 10-30 μm after vertical pulverizer grinding, the micro- 1-3 μ of the granularity of polycrystalline silicon powder waste material
The collocation of m, waterglass alkaline residue and polycrystalline silicon powder waste material optimizes the final grain composition of product, improves the performance of product；
E, by material that step d is prepared by fineness be 45 μm tail over control after, form high hydration activity silica bead.
Incorporation of the high hydration activity silica bead in cement is the 10-20% of cement total weight.
A kind of preparation method of high hydration activity silica bead of the present invention, this method make the silicic acid in waterglass alkaline residue
Sodium hydrate is changed into sodium carbonate and silica, this silica is that superfine powder is reacted with the direct of gas phase, crystallization degree
Lower, reactivity is higher, and original silica in waterglass alkaline residue is also the product after 1300-1500 DEG C of chilling, and two
Defect is more in silica crystal, and reactivity is also higher than the silica in nature；High-temperature gas makes polycrystalline silicon powder simultaneously
Hydrogen peroxide in waste material is decomposed into water and oxygen, is no longer result in concrete expansion, and polycrystalline silicon wastes are in high-temperature gas
Selective oxidation improves its reactivity.The granularity of waterglass alkaline residue is mostly in 10-30 μm after grinding, and polycrystalline silicon powder waste material
Granularity be mostly in 1-3 μm, the collocation of the two optimizes the final grain composition of product, improves the performance of product.Waste material
In no longer contain the silicic acid sodium hydrate and hydrogen peroxide unfavorable to concrete strength, make the lower waterglass alkaline residue of utilization rate and
Polycrystalline silicon powder waste material has obtained good application.High hydration activity silica bead, mixes 10-20% in cement, and 3d intensity can be improved
30-40% can be improved in 40-50%, 28d intensity；Medium and low intensity grade concrete incorporation 10%, 5- can be improved in concrete 28d intensity
8MPa。
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (2)
1. a kind of preparation method of high hydration activity silica bead, it is characterised in that the steps include:
A, waterglass alkaline residue and polycrystalline silicon powder waste material are added in vertical pulverizer simultaneously according to weight ratio 3-4:1, to vertical
Blowing temp is that 500-600 DEG C of carbon dioxide accounts for 15-20%(percent by volume in flour mill) hot wind；
B, the gas of the carbon dioxide in vertical pulverizer is sufficiently reacted with waterglass alkaline residue, so that the silicic acid in waterglass alkaline residue
Sodium hydrate is changed into sodium carbonate and silica, this silica is that superfine powder is reacted with the direct of gas phase, crystallization degree
Lower, reactivity is higher；
C, the hydrogen peroxide in polycrystalline silicon powder waste material is made to be decomposed into water and oxygen simultaneously into the hot wind in vertical pulverizer, no
Lead to concrete expansion again, so that selective oxidation of the polycrystalline silicon wastes in high-temperature gas improves its reactivity；
D, the granularity of waterglass alkaline residue is 10-30 μm after vertical pulverizer grinding, the micro- 1-3 μ of the granularity of polycrystalline silicon powder waste material
The collocation of m, waterglass alkaline residue and polycrystalline silicon powder waste material optimizes the final grain composition of product, improves the performance of product；
E, by material that step d is prepared by fineness be 45 μm tail over control after, form high hydration activity silica bead.
2. a kind of preparation method of high hydration activity silica bead according to claim 1, which is characterized in that the high aquation is living
Property incorporation of the silica bead in cement be cement total weight 10-20%.
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| CN201810984939.4A CN109053002A (en) | 2018-08-28 | 2018-08-28 | A kind of preparation method of high hydration activity silica bead |
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| CN201810984939.4A CN109053002A (en) | 2018-08-28 | 2018-08-28 | A kind of preparation method of high hydration activity silica bead |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113372032A (en) * | 2020-03-09 | 2021-09-10 | 博湃建筑科技（上海）有限公司 | Light 3D printing building ink and preparation method of geopolymer gel material thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0858980B1 (en) * | 1995-07-19 | 2004-10-06 | Joan Maria Neira Pous | Process of manufacturing mortar for construction |
| CN107434374A (en) * | 2017-07-09 | 2017-12-05 | 桂林理工大学 | A kind of method for improving scrap glass powder hydration activity |
| CN108218271A (en) * | 2018-01-30 | 2018-06-29 | 徐州中联混凝土有限公司 | A kind of preparation method of the siliceous cement raw material of high hydration activity |
-
2018
- 2018-08-28 CN CN201810984939.4A patent/CN109053002A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0858980B1 (en) * | 1995-07-19 | 2004-10-06 | Joan Maria Neira Pous | Process of manufacturing mortar for construction |
| CN107434374A (en) * | 2017-07-09 | 2017-12-05 | 桂林理工大学 | A kind of method for improving scrap glass powder hydration activity |
| CN108218271A (en) * | 2018-01-30 | 2018-06-29 | 徐州中联混凝土有限公司 | A kind of preparation method of the siliceous cement raw material of high hydration activity |
Non-Patent Citations (2)
| Title |
|---|
| 王一登: ""白炭黑与聚羧酸减水剂相互改性及其对水泥基材料性能影响"", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
| 王苗捷等: ""碳化法制备高比表面积白炭黑工艺研究"", 《无机盐工艺》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113372032A (en) * | 2020-03-09 | 2021-09-10 | 博湃建筑科技（上海）有限公司 | Light 3D printing building ink and preparation method of geopolymer gel material thereof |
| CN113372032B (en) * | 2020-03-09 | 2023-10-17 | 博湃建筑科技（上海）有限公司 | Preparation method of light 3D printing building ink and geopolymer gel material thereof |
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Application publication date: 20181221 |
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