CN104261446A - High-purity calcium aluminate powder for production of purifying agents - Google Patents
High-purity calcium aluminate powder for production of purifying agents Download PDFInfo
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- CN104261446A CN104261446A CN201410507894.3A CN201410507894A CN104261446A CN 104261446 A CN104261446 A CN 104261446A CN 201410507894 A CN201410507894 A CN 201410507894A CN 104261446 A CN104261446 A CN 104261446A
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- calcium aluminate
- purity calcium
- aluminate powder
- high purity
- water
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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
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to a high-purity calcium aluminate powder for the production of purifying agents. The high-purity calcium aluminate powder comprises the following components in percentage by weight: 60-72% of aluminum hydroxide, 25-40% of light calcium carbonate, and the balance of water. The high-purity calcium aluminate powder produced by using the formula above is prepared through the following concrete steps: (1) preparing aluminum hydroxide and light calcium carbonate in corresponding proportion, grinding, uniformly mixing, and putting the obtained mixture into a stirring cylinder; (2) injecting water into the stirring cylinder, and stirring while injecting water until the mixed material is pasty; (3) returning the uniformly mixed pasty material to a rotary kiln, and calcining the pasty material for 30-50 minutes by using natural gas at a calcining temperature of 1200 DEG C, so that massive high-purity calcium aluminate is obtained; (4) grinding the massive high-purity calcium aluminate, and enabling the obtained product to pass through a 120-mesh sieve, so that powdered high-purity calcium aluminate is obtained; and (5) packaging and storing the powdered high-purity calcium aluminate. The heavy metal content of the high-purity calcium aluminate powder disclosed by the invention is far lower than the national standard, therefore, the high-purity calcium aluminate powder is extremely applicable to the treatment of drinking water.
Description
Technical field
The invention belongs to chemical field, particularly one is used for water purification agent production high purity calcium aluminate powder.
Background technology
Calcium aluminate powder is a kind of water purification agent starting material, major ingredient is CaO, AL2O3, Fe2O3, there is stronger activity, adopt acid-soluble one-step produce water purification agent can save a large amount of manpower, electric power, again can be larger reduce costs, and have that processing unit is simple, the easy advantage such as grasp.It is the desirable feedstock of producing aluminium chlorohydroxide and poly aluminium chloride product at present.But the content of heavy metal index tribute in existing calcium aluminate powder, arsenic, cadmium, chromium, lead is higher, is unfavorable for the health of human body.
Summary of the invention
In order to meet the national standard of polymerize aluminum chloride, reducing heavy metal tribute, arsenic, cadmium, chromium, plumbous content, the object of this invention is to provide a kind of high purity calcium aluminate powder produced for water purification agent.
For the high purity calcium aluminate powder that scavenging agent is produced, the weight percent of its formula is: aluminium hydroxide 60 ~ 72%, light calcium carbonate 25 ~ 40%, surplus are water.
The concrete steps of above-mentioned formula production high purity calcium aluminate are adopted to be:
(1), by corresponding proportion preparation aluminium hydroxide, light calcium carbonate, abrasive dust mixes puts into a mixing bowl;
(2), in a mixing bowl inject water, marginal not enters limit and stirs, until mixture becomes paste;
(3), by the plaster material mixed send into rotary kiln Sweet natural gas to calcine, calcining temperature is 1200 C
0, the time is 30 ~ 50 minutes, obtains block high purity calcium aluminate;
(4) block high purity calcium aluminate is carried out grinding, cross 120 mesh sieves, obtain powdery high purity calcium aluminate powder;
(5), pack, store: ventilation, dry place should be placed in.
The preferred weight percent of upper described high purity calcium aluminate powder is: aluminium hydroxide 62%, light calcium carbonate 30%, water are 8%.
High product purity calcium aluminate powder of the present invention is the main raw material of water purification agent, and its quality index is better than national standard greatly, main be heavy metal content far below national standard, be highly suitable for the process of tap water.
Embodiment
Calcium aluminate powder is pale powder, and mainly for the production of polymerize aluminum chloride, Tai-Ace S 150, the product of the aluminium salt such as sodium aluminate, also can be used for the adjustment of basicity, also can be used for refractory materials.Major ingredient is the mixture of Calcium dialuminate (CaO2A1203) and a calcium aluminate (CaOA1203), is slightly soluble in water, and the aqueous solution is in alkalescence, and pH value is about 11.Calcium aluminate powder and inorganic acid reactive behavior very high, generation can be started at normal temperatures, and thermal discharge is large, quick heating, the solubility rate of aluminum oxide can reach more than 90%, does raw material production liquid or solid polymerize aluminum chloride energy Simplified flowsheet, reduce costs with it, improving the quality of products, is the starting material that current domestic and international most of polymerize aluminum chloride manufacturer adopts.For adapting to the national standard of drinking water " polymerize aluminum chloride ", reduce the tribute of heavy metal index, arsenic, cadmium, chromium, plumbous content.Technician, through many experiments, develops a kind of highly purified calcium aluminate powder, and its heavy metal content is significantly less than " polymerize aluminum chloride " national standard.
For the high purity calcium aluminate powder that scavenging agent is produced, the weight percent of its formula is: aluminium hydroxide 60 ~ 72%, light calcium carbonate 25 ~ 40%, surplus are water.
The concrete steps of above-mentioned formula production high purity calcium aluminate are adopted to be:
(1), by corresponding proportion preparation aluminium hydroxide, light calcium carbonate, abrasive dust mixes puts into a mixing bowl;
(2), in a mixing bowl inject water, marginal not enters limit and stirs, until mixture becomes paste;
(3), by the plaster material mixed send into rotary kiln Sweet natural gas to calcine, calcining temperature is 1200 C
0, the time is 30 ~ 50 minutes, obtains block high purity calcium aluminate;
(4) block high purity calcium aluminate is carried out grinding, cross 120 mesh sieves, obtain powdery high purity calcium aluminate powder;
(5), pack, store: ventilation, dry place should be placed in.
Technician finds in repeatedly putting into practice, and adopt following proportioning, the quality of gained high purity calcium aluminate powder is more excellent, that is: aluminium hydroxide 62%, light calcium carbonate 30%, water are 8%.
The high purity calcium aluminate powder adopting the present invention to produce not only heavy metal content is significantly less than national standard, and with low cost.
Following table is adopt the quality index of gained calcium aluminate powder of the present invention and GB to contrast:
At present, domestic water treatment industry widely uses efficient, safe polymerize aluminum chloride, at people's Drinking Water and Industrial Waste Water Treatments, has received good effect.Can be found out by contrast, the calcium aluminate powder that the present invention produces have efficient, of fine quality, inexpensive, performance is good, solubility in acid is high, reactant is easily separated the good feature of i.e. filterableness, is highly suitable for the fast processing of tap water.
Claims (2)
1., for the high purity calcium aluminate powder that scavenging agent is produced, it is characterized in that: the weight percent of described calcium aluminate powder formula is: aluminium hydroxide 60 ~ 72%, light calcium carbonate 25 ~ 40%, surplus are water;
The concrete steps of above-mentioned formula production high purity calcium aluminate powder are adopted to be:
(1), by corresponding proportion preparation aluminium hydroxide, light calcium carbonate, abrasive dust mixes puts into a mixing bowl;
(2), in a mixing bowl inject water, marginal not enters limit and stirs, until mixture becomes paste;
(3), by the plaster material mixed send into rotary kiln Sweet natural gas to calcine, calcining temperature is 1200 C
0, the time is 30 ~ 50 minutes, obtains block high purity calcium aluminate;
(4) block high purity calcium aluminate is carried out grinding, cross 120 mesh sieves, obtain powdery high purity calcium aluminate powder;
(5), pack, store: ventilation, dry place should be placed in.
2. high purity calcium aluminate powder according to claim 1, is characterized in that: the preferred weight percent of described high purity calcium aluminate powder is: aluminium hydroxide 62%, light calcium carbonate 30%, water 8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410507894.3A CN104261446A (en) | 2014-09-29 | 2014-09-29 | High-purity calcium aluminate powder for production of purifying agents |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410507894.3A CN104261446A (en) | 2014-09-29 | 2014-09-29 | High-purity calcium aluminate powder for production of purifying agents |
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| CN104261446A true CN104261446A (en) | 2015-01-07 |
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| CN201410507894.3A Pending CN104261446A (en) | 2014-09-29 | 2014-09-29 | High-purity calcium aluminate powder for production of purifying agents |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948088A (en) * | 2016-05-16 | 2016-09-21 | 遵义市恒新化工有限公司 | Calcium aluminate powder with high dissolution rate |
| CN106006689A (en) * | 2016-05-17 | 2016-10-12 | 常州清流环保科技有限公司 | Preparation method of calcium aluminate for water treatment agent |
| CN107311209A (en) * | 2017-07-06 | 2017-11-03 | 西安建筑科技大学 | A kind of carbon/calcium aluminate composite powder and preparation method thereof |
| CN108101084A (en) * | 2018-01-10 | 2018-06-01 | 浙江海翔净水科技有限公司 | A kind of method that high purity calcium aluminate is prepared using rotary kiln |
| CN110642279A (en) * | 2018-06-26 | 2020-01-03 | 尧柏特种水泥技术研发有限公司 | Production method of calcium aluminate for high-performance water treatment agent |
Citations (4)
| 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 |
| CN103708517A (en) * | 2013-12-30 | 2014-04-09 | 长沙理工大学 | Method for preparing powdery iron-free polyaluminum chloride from high-whiteness calcium aluminate |
| CN103880053A (en) * | 2014-03-10 | 2014-06-25 | 遵义市恒新化工有限公司 | Calcium aluminate powder |
| CN103880051A (en) * | 2014-02-10 | 2014-06-25 | 广西绿实环保材料有限公司 | Method for preparing pure calcium aluminate powder for water treatment |
-
2014
- 2014-09-29 CN CN201410507894.3A patent/CN104261446A/en active Pending
Patent Citations (4)
| 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 |
| CN103708517A (en) * | 2013-12-30 | 2014-04-09 | 长沙理工大学 | Method for preparing powdery iron-free polyaluminum chloride from high-whiteness calcium aluminate |
| CN103880051A (en) * | 2014-02-10 | 2014-06-25 | 广西绿实环保材料有限公司 | Method for preparing pure calcium aluminate powder for water treatment |
| CN103880053A (en) * | 2014-03-10 | 2014-06-25 | 遵义市恒新化工有限公司 | Calcium aluminate powder |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948088A (en) * | 2016-05-16 | 2016-09-21 | 遵义市恒新化工有限公司 | Calcium aluminate powder with high dissolution rate |
| CN106006689A (en) * | 2016-05-17 | 2016-10-12 | 常州清流环保科技有限公司 | Preparation method of calcium aluminate for water treatment agent |
| CN106006689B (en) * | 2016-05-17 | 2017-08-25 | 常州清流环保科技有限公司 | A kind of preparation method of water treatment agent calcium aluminate |
| CN107311209A (en) * | 2017-07-06 | 2017-11-03 | 西安建筑科技大学 | A kind of carbon/calcium aluminate composite powder and preparation method thereof |
| CN108101084A (en) * | 2018-01-10 | 2018-06-01 | 浙江海翔净水科技有限公司 | A kind of method that high purity calcium aluminate is prepared using rotary kiln |
| CN110642279A (en) * | 2018-06-26 | 2020-01-03 | 尧柏特种水泥技术研发有限公司 | Production method of calcium aluminate for high-performance water treatment agent |
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Application publication date: 20150107 |