CN105906017A - Preparing method for polymeric aluminum ferric sulfate water purifying agent - Google Patents
Preparing method for polymeric aluminum ferric sulfate water purifying agent Download PDFInfo
- Publication number
- CN105906017A CN105906017A CN201610461164.3A CN201610461164A CN105906017A CN 105906017 A CN105906017 A CN 105906017A CN 201610461164 A CN201610461164 A CN 201610461164A CN 105906017 A CN105906017 A CN 105906017A
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- China
- Prior art keywords
- water purifying
- pyrite cinder
- silicic acid
- water
- polyaluminium sulfate
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a preparing method for a polymeric aluminum ferric sulfate water purifying agent. Raw materials include pyrite cinder, kieselguhr, sulfuric acid, waste iron chippings and aluminum nitrate. Pyrite cinder is effectively used, waste is turned into wealth, the problem that pyrite cinder is difficult to dispose is solved, the water purifying agent has good aluminum ferric coagulation characteristics, alumen ustum is large, flocculating settling speed is high, usage is small, the removal rate is large, the application scope is wide, various pollutant components in water can be effectively treated, and the content of heavy metal and other harmful substances in water is reduced remarkably. The water purifying agent is mainly prepared from pyrite cinder and kieselguhr, is low in cost and free of secondary pollution, and has the advantages of being high in adsorption capacity, good in water purifying effect and high in water purifying speed.
Description
Technical field
The invention belongs to water treatment field, be specifically related to the preparation method of a kind of polyaluminium sulfate silicic acid.
Background technology
At present China's industrial sulphuric acid produces and mainly becomes sulfur dioxide by pyrite burning, purified, catalysis oxidation,
Absorb and prepare.Producing substantial amounts of pyrite cinder in roasting process, it is mainly composed of the oxide of ferrum, three oxidations two
Aluminum, silicon dioxide, the most also calcium oxide, magnesium oxide, lead, zinc, selenium, arsenic, phosphorus etc., not only land occupation, pollution environment, and
Cause underground water pollution, always one of difficult problem becoming Sulphuric Acid Enterprises.And the oxide of the ferrum in pyrite cinder, be prepare poly-
Close one of raw material of aluminium iron sulfate water purification agent, therefore, how to utilize pyrite cinder to prepare polyaluminium sulfate silicic acid, thus
Turn waste into wealth, be a direction of current pyrite cinder research.
Summary of the invention
In order to make up the deficiencies in the prior art, the invention provides a kind of polyaluminium sulfate silicic acid and preparation side thereof
Method, this water purification agent solves the reluctant problem of pyrite cinder, and it can effectively remove the pollutant component in water, and
And purification speed is fast, low cost.
The technical solution adopted in the present invention is as follows:
The preparation method of a kind of polyaluminium sulfate silicic acid, the raw material producing polyaluminium sulfate silicic acid includes pyrite
Slag, kieselguhr, sulphuric acid, waste iron filing and aluminum nitrate, concretely comprise the following steps:
(1) pyrite cinder and diatomite in powder are broken to 200～400 mesh, stand-by；
(2) in the reactor that pressure is 0.2～0.6Mpa, add sulphuric acid, be heated to 250～350 DEG C；
(3) powder step (1) obtained adds in reactor, stirs 1～3 hour, is cooled to 60～90 DEG C and goes out with water logging, mistake
Filter obtains leachate；
(4) waste iron filing is added leachate, be heated to 70～100 DEG C, stir 3～6 hours, it is thus achieved that copperas solution；
(5) by copperas solution through cooling down, ferrous sulfate crystal is separated out；
(6) ferrous sulfate crystal is added in sulphuric acid, add aluminum nitrate, be passed through air and aoxidize, through hydrolysis, polyreaction
Prepare described polyaluminium sulfate silicic acid.
Further, in step (2), the mass fraction of sulphuric acid is 70%～80%.
Further, in step (6), the mass fraction of sulphuric acid is 2%～10%.
The present invention has a following beneficial effect:
The preparation method of the polyaluminium sulfate silicic acid of the present invention, it is achieved that the effective utilization to pyrite cinder, become give up into
Treasured, solves the reluctant problem of pyrite cinder, and this water purification agent has the good characteristic of ferro-aluminum coagulation, and alumen ustum is big,
Flocculation settling velocity is fast, and consumption is few, clearance height and wide application, it is possible to effectively locate the multiple pollutant component in water
Reason, significantly reduces the content of the harmful substances such as heavy metal in water, and this water purification agent mainly uses pyrite cinder and kieselguhr system
Becoming, low cost, will not produce secondary pollution, its absorption affinity is strong simultaneously, has purifying water effect good, the fireballing feature of water purification.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described further:
Embodiment 1
According to following parts by weight configuration polyaluminium sulfate silicic acid: pyrite cinder 50 parts, 15 parts of kieselguhr, sulphuric acid 200
Part, waste iron filing 10 parts, aluminum nitrate 10 parts.
The preparation method of above-mentioned polyaluminium sulfate silicic acid, comprises the following steps:
(1) pyrite cinder and diatomite in powder are broken to 200 mesh, stand-by；
(2) adding mass fraction in the reactor that pressure is 0.5Mpa is the sulphuric acid of 75%, is heated to 250 DEG C；
(3) powder step (1) obtained adds in reactor, stirs 2 hours, is cooled to 80 DEG C and goes out with water logging, filters and obtains
Leachate；
(4) waste iron filing is added leachate, be heated to 90 DEG C, stir 4 hours, it is thus achieved that copperas solution；
(5) by copperas solution through cooling down, ferrous sulfate crystal is separated out；
(6) ferrous sulfate crystal is joined in the sulphuric acid that mass fraction is 5%, add aluminum nitrate, be passed through air and carry out oxygen
Change, prepare described polyaluminium sulfate silicic acid through hydrolysis, polyreaction.
Embodiment 2
According to following parts by weight configuration polyaluminium sulfate silicic acid: pyrite cinder 80 parts, 20 parts of kieselguhr, sulphuric acid 300
Part, waste iron filing 15 parts, aluminum nitrate 15 parts.
The preparation method of above-mentioned polyaluminium sulfate silicic acid, comprises the following steps:
(1) pyrite cinder and diatomite in powder are broken to 300 mesh, stand-by；
(2) adding mass fraction in the reactor that pressure is 0.3Mpa is the sulphuric acid of 70%, is heated to 300 DEG C；
(3) powder step (1) obtained adds in reactor, stirs 2 hours, is cooled to 80 DEG C and goes out with water logging, filters and obtains
Leachate；
(4) waste iron filing is added leachate, be heated to 90 DEG C, stir 4 hours, it is thus achieved that copperas solution；
(5) by copperas solution through cooling down, ferrous sulfate crystal is separated out；
(6) ferrous sulfate crystal is joined in the sulphuric acid that mass fraction is 3%, add aluminum nitrate, be passed through air and carry out oxygen
Change, prepare described polyaluminium sulfate silicic acid through hydrolysis, polyreaction.
Embodiment 3
According to following parts by weight configuration polyaluminium sulfate silicic acid: pyrite cinder 100 parts, 25 parts of kieselguhr, sulphuric acid 400
Part, waste iron filing 20 parts, aluminum nitrate 20 parts.
The preparation method of above-mentioned polyaluminium sulfate silicic acid, comprises the following steps:
(1) pyrite cinder and diatomite in powder are broken to 400 mesh, stand-by；
(2) adding mass fraction in the reactor that pressure is 0.6Mpa is the sulphuric acid of 80%, is heated to 350 DEG C；
(3) powder step (1) obtained adds in reactor, stirs 2 hours, is cooled to 80 DEG C and goes out with water logging, filters and obtains
Leachate；
(4) waste iron filing is added leachate, be heated to 90 DEG C, stir 4 hours, it is thus achieved that copperas solution；
(5) by copperas solution through cooling down, ferrous sulfate crystal is separated out；
(6) ferrous sulfate crystal is joined in the sulphuric acid that mass fraction is 3%, add aluminum nitrate, be passed through air and carry out oxygen
Change, prepare described polyaluminium sulfate silicic acid through hydrolysis, polyreaction.
Use the polyaluminium sulfate silicic acid of the present invention, it is achieved that the effective utilization to pyrite cinder, turn waste into wealth,
Solving the reluctant problem of pyrite cinder, and this water purification agent has the good characteristic of ferro-aluminum coagulation, alumen ustum is big, flocculation
Sedimentation velocity is fast, and consumption is few, clearance height and wide application, it is possible to be effectively treated the multiple pollutant component in water, aobvious
Writing the content reducing the harmful substances such as heavy metal in water, this water purification agent mainly uses pyrite cinder and kieselguhr to make, and becomes
Basis is the lowest, will not produce secondary pollution, and its absorption affinity is strong simultaneously, has purifying water effect good, the fireballing feature of water purification.
Claims (3)
1. the preparation method of a polyaluminium sulfate silicic acid, it is characterised in that: produce the former of polyaluminium sulfate silicic acid
Material includes pyrite cinder, kieselguhr, sulphuric acid, waste iron filing and aluminum nitrate, concretely comprises the following steps:
(1) pyrite cinder and diatomite in powder are broken to 200～400 mesh, stand-by；
(2) in the reactor that pressure is 0.2～0.6Mpa, add sulphuric acid, be heated to 250～350 DEG C；
(3) powder step (1) obtained adds in reactor, stirs 1～3 hour, is cooled to 60～90 DEG C and goes out with water logging, mistake
Filter obtains leachate；
(4) waste iron filing is added leachate, be heated to 70～100 DEG C, stir 3～6 hours, it is thus achieved that copperas solution；
(5) by copperas solution through cooling down, ferrous sulfate crystal is separated out；
(6) ferrous sulfate crystal is added in sulphuric acid, add aluminum nitrate, be passed through air and aoxidize, through hydrolysis, polyreaction
Prepare described polyaluminium sulfate silicic acid.
The preparation method of polyaluminium sulfate silicic acid the most according to claim 1, it is characterised in that: sulfur in step (2)
The mass fraction of acid is 70%～80%.
The preparation method of polyaluminium sulfate silicic acid the most according to claim 1 and 2, it is characterised in that: in step (6)
The mass fraction of sulphuric acid is 2%～10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610461164.3A CN105906017A (en) | 2016-06-23 | 2016-06-23 | Preparing method for polymeric aluminum ferric sulfate water purifying agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610461164.3A CN105906017A (en) | 2016-06-23 | 2016-06-23 | Preparing method for polymeric aluminum ferric sulfate water purifying agent |
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| CN105906017A true CN105906017A (en) | 2016-08-31 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101896A (en) * | 1994-11-04 | 1995-04-26 | 华南理工大学 | Process for producing compound poly-ferric aluminium sulfate |
| WO2009128490A1 (en) * | 2008-04-16 | 2009-10-22 | 株式会社Azmec | Insolubilizing agent for toxic substances, method for insolubilization of toxic substances, and water treatment process |
| CN103482741A (en) * | 2013-09-23 | 2014-01-01 | 绍兴立源科技信息有限公司 | Method for preparing poly ferro-aluminium diatomite flocculant |
| CN105217869A (en) * | 2015-10-16 | 2016-01-06 | 北京欧泰克能源环保工程技术股份有限公司 | The method of resource of the spent acid produced in a kind of flue gas during smelting Sulphuric acid |
-
2016
- 2016-06-23 CN CN201610461164.3A patent/CN105906017A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101896A (en) * | 1994-11-04 | 1995-04-26 | 华南理工大学 | Process for producing compound poly-ferric aluminium sulfate |
| WO2009128490A1 (en) * | 2008-04-16 | 2009-10-22 | 株式会社Azmec | Insolubilizing agent for toxic substances, method for insolubilization of toxic substances, and water treatment process |
| CN103482741A (en) * | 2013-09-23 | 2014-01-01 | 绍兴立源科技信息有限公司 | Method for preparing poly ferro-aluminium diatomite flocculant |
| CN105217869A (en) * | 2015-10-16 | 2016-01-06 | 北京欧泰克能源环保工程技术股份有限公司 | The method of resource of the spent acid produced in a kind of flue gas during smelting Sulphuric acid |
Non-Patent Citations (1)
| Title |
|---|
| 邱慧琴: "硫铁矿烧渣制备聚合硫酸铁铝混凝剂及应用研究", 《上海大学学报(自然科学版)》 * |
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