CN106006689B - A kind of preparation method of water treatment agent calcium aluminate - Google Patents
A kind of preparation method of water treatment agent calcium aluminate Download PDFInfo
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- CN106006689B CN106006689B CN201610327161.0A CN201610327161A CN106006689B CN 106006689 B CN106006689 B CN 106006689B CN 201610327161 A CN201610327161 A CN 201610327161A CN 106006689 B CN106006689 B CN 106006689B
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- water treatment
- calcium
- treatment agent
- preparation
- calcium aluminate
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/16—Preparation of alkaline-earth metal aluminates or magnesium aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/164—Calcium aluminates
Abstract
The invention belongs to water treatment agent field, silicon source, calcium source and sodium metasilicate are well mixed by a kind of preparation method of water treatment agent calcium aluminate, fired finished product and ball milling.Beneficial effect：Sodium metasilicate is added in sintering procedure in the application and be used as additive so that firing temperature is greatly reduced, and the time fired also has shortened, and reduces the problem of calcium aluminate powder preparation process condition is harsh；Further, since the addition of sodium metasilicate causes there is calcium silicates in final products, be conducive to improving the water treatment efficiency of product.
Description
Technical field
The invention belongs to water treatment agent field, more particularly to a kind of preparation method of water treatment agent calcium aluminate.
Background technology
Aluminium salt occupies very important position in present chemical industry and water-purifying material industry, especially in water process row
Industry, will use aluminium salt or molysite product.
Wherein calcium aluminate is important raw and processed materials one kind of aluminium salt water treatment agent.Usual calcium aluminate is by aluminium salt and calcium salt mixing
Calcining is formed, and firing temperature is at 1350 DEG C or so, it is necessary to fire 3~5h.Firing temperature is higher, requires more severe to production equipment
Carve.
The content of the invention
The purpose of the present invention be the higher defect of calcium aluminate firing temperature for overcoming prior art to exist there is provided a kind of water at
Manage the preparation method of agent calcium aluminate.
The technical solution adopted for the present invention to solve the technical problems is：A kind of preparation side of water treatment agent calcium aluminate
Method, silicon source, calcium source and sodium metasilicate are well mixed, fired finished product and ball milling.
Further, the temperature of the firing is 800~900 DEG C.
Further, the time of the firing is 1~2h.
Specifically, described silicon source includes the one of which of aluminium ore soil, aluminum oxide, aluminium hydroxide, aluminium powder, aluminium foil and aluminium sheet
Or it is a variety of.
Specifically, described calcium source include powdered whiting, precipitated calcium carbonate, calcium oxide and calcium hydroxide in one kind or
It is a variety of.
Preferably, the Al of described silicon source and be 1 with the mol ratio of the Ca in calcium source：1.2~1.5.
Preferably, the total mass ratio of the quality of the sodium metasilicate and silicon source, calcium source is 0.05~0.2：1.
Beneficial effect：Sodium metasilicate is added in sintering procedure in the application and be used as additive so that firing temperature significantly drops
It is low, and the time fired also shortened, reduce the problem of calcium aluminate powder preparation process condition is harsh；Further, since silicon
The addition of sour sodium causes there is calcium silicates in final products, is conducive to improving the water treatment efficiency of product.
Embodiment
Embodiment 1
A kind of preparation method of water treatment agent calcium aluminate, aluminium ore soil, powdered whiting and sodium metasilicate are well mixed, controlled
The Al of silicon source processed and be 1 with the mol ratio of the Ca in calcium source:1.2, the quality of sodium metasilicate and silicon source, calcium source always than for 0.1:1,
Through 800 DEG C of firing 2h finished products, particle diameter is finally milled to for 220~280 mesh.
Embodiment 2
A kind of preparation method of water treatment agent calcium aluminate, aluminum oxide, precipitated calcium carbonate and sodium metasilicate are well mixed, control
The Al of silicon source processed and be 1 with the mol ratio of the Ca in calcium source:1.5, the total mass ratio of the quality and silicon source, calcium source of sodium metasilicate is
0.2:1, through 900 DEG C of firing 1h finished products, particle diameter is finally milled to for 220~280 mesh.
Embodiment 3
A kind of preparation method of water treatment agent calcium aluminate, aluminium foil, calcium oxide and sodium metasilicate are well mixed, and control silicon source
Al and be 1 with the mol ratio of the Ca in calcium source:1.3, the quality of sodium metasilicate and silicon source, calcium source always than for 0.05:1, through 850
DEG C 1.5h finished products are fired, be finally milled to particle diameter for 220~280 mesh.
Embodiment 4
A kind of preparation method of water treatment agent calcium aluminate, aluminium foil, calcium oxide and sodium metasilicate are well mixed, and control silicon source
Al and be 1 with the mol ratio of the Ca in calcium source:1.4, the quality of sodium metasilicate and silicon source, calcium source always than for 0.15:1, through 900
DEG C 1.5h finished products are fired, be finally milled to particle diameter for 220~280 mesh.
Comparative example 1
Sodium metasilicate component in embodiment 1 is removed, and firing condition is replaced with into 1300 DEG C of firing 4h, other conditions are with real
Apply example 1.
Comparative example 2
Sodium metasilicate in embodiment 1 is replaced with to the borax of equivalent, product is finally made in other conditions be the same as Example 1.
Obtained product in various embodiments above and comparative example is subjected to alumina leaching amount detection (testing standard GB/
T29341-2012), structure is as shown in table 1.
Table 1
According to water treatment agent with calcium aluminate national standard (GB/T29341-2012) test rating digesting efficiency of alumina >=
90.91%, it is seen that the digesting efficiency of alumina of calcium aluminate powder prepared by the inventive method is high, activity is high, utilization rate is high, it is adaptable to aluminium
The production of salt as water purifying agent.Preparation method firing temperature is low in embodiment 1 and the data of comparative example 1, the application, the time is short,
The effect of traditional preparation methods can be met or exceeded, is understood while being compared with the data of comparative example 2, is helped compared to conventional
Agent, sodium metasilicate effect is more preferable.
Polyaluminium chloride water process is prepared using the product and hydrochloric acid reaction that are prepared in the various embodiments described above and comparative example
Agent, is specially with 50 by hydrochloric acid and the calcium aluminate powder prepared:7 mass ratio mixing, logical steam is warming up at 100 DEG C, is incubated
1.5h, then press filtration obtains aluminium polychloride water treatment agent, treatment effect such as table 2 below institute of each aluminium polychloride inorganic agent to water
Show,
Table 2
Wherein raw water turbidity is 65.70NTU, and pH value is 7.9, and raw water temperature is 25 DEG C, and each embodiment and comparative example are made
Aluminium polychloride water treatment agent concentration for 1mg/mL (with Al2O3Effective content meter), coagulation mixing time be 10min, precipitation
5min, GT value 32130 (GB15892-2009).
It should be appreciated that specific embodiment described above is only used for explaining the present invention, it is not intended to limit the present invention.By
Among the obvious changes or variations that the spirit of the present invention is extended out is still in protection scope of the present invention.
Claims (7)
1. a kind of preparation method of water treatment agent calcium aluminate, it is characterised in that：Silicon source, calcium source and sodium metasilicate are well mixed,
Fired finished product and ball milling.
2. the preparation method of water treatment agent calcium aluminate according to claim 1, it is characterised in that：The temperature of the firing
For 800~900 DEG C.
3. the preparation method of water treatment agent calcium aluminate according to claim 1, it is characterised in that：The time of the firing
For 1~2h.
4. the preparation method of water treatment agent calcium aluminate according to claim 1, it is characterised in that：Described silicon source includes
Aluminium ore soil, aluminum oxide, aluminium hydroxide, aluminium powder, the one or more of which of aluminium foil and aluminium sheet.
5. the preparation method of water treatment agent calcium aluminate according to claim 1, it is characterised in that：Described calcium source includes
One or more in powdered whiting, precipitated calcium carbonate, calcium oxide and calcium hydroxide.
6. the preparation method of water treatment agent calcium aluminate according to claim 1, it is characterised in that：The Al of described silicon source
It is 1 with the mol ratio with the Ca in calcium source：1.2~1.5.
7. the preparation method of the water treatment agent calcium aluminate according to claim 1 or 6, it is characterised in that：The sodium metasilicate
Quality and silicon source, the total mass ratio of calcium source be 0.05~0.2：1.
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| CN106006689B true CN106006689B (en) | 2017-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109775738A (en) * | 2019-03-28 | 2019-05-21 | 李风亭 | A method of preparing high purity calcium aluminate |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747512A (en) * | 2016-12-15 | 2017-05-31 | 武汉科技大学 | A kind of titanium Calcium aluminates powder and preparation method thereof |
| CN111634933B (en) * | 2020-05-27 | 2022-08-30 | 中铝山东有限公司 | Method for preparing calcium aluminate by using PAC (polyaluminium chloride) acid waste residues and calcium aluminate |
| CN112919514B (en) * | 2021-03-25 | 2023-12-26 | 常州清流环保科技有限公司 | Preparation method of high-purity calcium aluminate for producing water treatment agent by using waste anthraquinone regenerant |
Citations (2)
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| CN103708513A (en) * | 2013-09-02 | 2014-04-09 | 常州市清流水处理剂有限公司 | High purity composite alumina powder for water treatment agent |
| CN104261446A (en) * | 2014-09-29 | 2015-01-07 | 遵义市恒新化工有限公司 | High-purity calcium aluminate powder for production of purifying agents |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708513A (en) * | 2013-09-02 | 2014-04-09 | 常州市清流水处理剂有限公司 | High purity composite alumina powder for water treatment agent |
| CN104261446A (en) * | 2014-09-29 | 2015-01-07 | 遵义市恒新化工有限公司 | High-purity calcium aluminate powder for production of purifying agents |
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| Title |
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| Al2O3−SiO2system.《Trans. Nonferrous Met. Soc. China》.2012, * |
| YU Haiyan，et al..Effect of Na2O on formation of calcium aluminates in CaO− * |
| 低配钙CaO-Al2O3-SiO2系烧结物相形成规律;张迪等;《轻金属》;20150930;全文 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109775738A (en) * | 2019-03-28 | 2019-05-21 | 李风亭 | A method of preparing high purity calcium aluminate |
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