CN101559983B - Method for preparing red iron oxide by utilizing materialized mud of malysite water treatment agent - Google Patents
Method for preparing red iron oxide by utilizing materialized mud of malysite water treatment agent Download PDFInfo
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- CN101559983B CN101559983B CN2009100395166A CN200910039516A CN101559983B CN 101559983 B CN101559983 B CN 101559983B CN 2009100395166 A CN2009100395166 A CN 2009100395166A CN 200910039516 A CN200910039516 A CN 200910039516A CN 101559983 B CN101559983 B CN 101559983B
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- iron oxide
- materialized mud
- red iron
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- materialized
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 title abstract description 4
- 238000001354 calcination Methods 0.000 claims abstract description 22
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 17
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 17
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 17
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 17
- 239000010865 sewage Substances 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 229920002401 polyacrylamide Polymers 0.000 claims description 13
- 239000010802 sludge Substances 0.000 claims description 12
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 6
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 6
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 238000001035 drying Methods 0.000 abstract description 11
- 238000004065 wastewater treatment Methods 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 229960005191 ferric oxide Drugs 0.000 description 19
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000001556 precipitation Methods 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 206010009866 Cold sweat Diseases 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 6
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 6
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 6
- 239000010801 sewage sludge Substances 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 239000002957 persistent organic pollutant Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000975 co-precipitation Methods 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 239000002562 thickening agent Substances 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000001034 iron oxide pigment Substances 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000001062 red colorant Substances 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000013759 synthetic iron oxide Nutrition 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for preparing red iron oxide by utilizing materialized mud of a malysite water treatment agent. The method includes the steps as follows: firstly, the materialized mudwhich is obtained after sewage is processed by the malysite water treatment agent is dehydrated until the water content thereof is lowered to 65 to 80 percent; and secondly, the dehydrated materializ ed mud is dried until the water content thereof is lowered to 5 to 30 percent and then is calcined to obtain the red iron oxide, and the calcination temperature is controlled to range from 600 to 900 DEG C. The invention adopts the step of converting the ferrous materialized mud into the useful dry process red iron oxide, thereby solving the problem of the final treatment of the materialized mud in waste water treatment plants. Compared with the dry process red iron oxide prepared by using ferrous sulfate, the dry process red iron oxide prepared by the method does not generate sulfur dioxide and other substances which pollute the atmospheric environment, the utilized materialized mud does not need to be purchased, suppliers of the materialized mud can provide certain amount of money for the final treatment of the materialized mud, the produced red iron oxide can be sold, and therefore, the method can bring considerable economic benefit for users.
Description
Technical field
The present invention relates to the materialized mud utilization in the sewage disposal, particularly relate to the method that the materialized mud that utilizes the molysite water conditioner prepares red iron oxide; Its red iron oxide that makes can be widely used in fields such as building, pottery, coating.
Background technology
Industrial circle such as textile printing and dyeing, paper industry all produces a large amount of waste water, mainly is to handle waste water by the coagulating sedimentation facture water technology that this method is commonly used at present.Because the molysite water conditioner has advantages such as inexpensive, adaptation pH value broad, so be used widely in the Industrial Wastewater Treatment field.Use the molysite water conditioner, produce a large amount of materialized muds, become the difficult problem of waste water treatment plant, often cause secondary pollution easily, must be disposed.If can utilize the iron in these materialized muds, it is turned waste into wealth, then have more realistic meaning.
Red iron oxide is an ancient pigment, just brings into use iron pigment in drawing about 20,000 years prehumans.What the mankind brought into use all is the natural iron oxide mineral, uses as pigment after crushed.Because industrial expansion needs, more pure in order to prepare, the product that performance is more superior begins to develop the synthetic iron oxide pigment greatly again about the 1950's, replaced natural product now gradually.Sintetics has accounted for more than 80% of ultimate production in recent years, because the attention of various countries' environmental pollution utilizes various iron content refuses to make iron oxide red pigment and makes it have more vitality.
The operational path of producing ferric oxide red colorant is many, generally can be divided into dry method and wet method two big technologies, dry method comprises the calcination and the pulverizing of some iron ores, the direct calcination of ferrous sulfate etc., the calcination ferrous sulfate can produce a large amount of sulfur dioxide pollutions, so it uses restriction to some extent.The wet method iron oxide red is reaction in two steps generally, at first is that crystal seed is manufactured, and is second oxidation then, the iron oxide red of the ferric oxide that is generated.Because the production of wet method iron oxide red will consume a large amount of iron filings, industrial chemicals such as acid, and need to consume a large amount of heat energy, production cost is higher, and its tinctorial property is better, and price is also corresponding higher.
The molysite water conditioner is meant that some row can be used as the molysite of water treatment coagulant, as ferrous sulfate, and ferric sulfate, iron protochloride, iron(ic) chloride, bodied ferric sulfate etc.In water treatment procedure, by the materialized mud that the molysite water conditioner generates, major ingredient wherein is the organic pollutant in ironic hydroxide and the water, and the method for utilizing this materialized mud to prepare red iron oxide is not appeared in the newspapers as yet.
Summary of the invention
The objective of the invention is to overcome prior art itself and produce pollution or the too high problem of cost, a kind of sewage disposal refuse that utilizes is provided, turn waste into wealth, and the lower materialized mud that utilizes the molysite water conditioner of production cost prepares the method for red iron oxide.
The major ingredient of handling the materialized mud that generates behind the waste water with the molysite water conditioner is the organic pollutant in ironic hydroxide and the water, this materialized mud drying, calcination, make full use of the ironic hydroxide in the mud, simultaneously with impurity organism burning-off, because of iron in the materialized mud mainly is present in the form of ironic hydroxide or ferrous hydroxide, so in calcination process, can not produce the obnoxious flavoures such as sulfurous gas that produce when calcining as ferrous sulfate.This invention can obtain the dry method iron oxide red, can solve the ultimate disposal problem of materialized mud again.
Purpose of the present invention is achieved through the following technical solutions:
Utilize the materialized mud of molysite water conditioner to prepare the method for red iron oxide: will use the dispose of sewage materialized mud of back gained of molysite water conditioner, and carry out processed earlier, and dewater to the water ratio of materialized mud and reduce to 65-80%; Then the materialized mud after the dehydration is dried, make its water content drop to 5-30%, calcining again, the control calcining temperature is 600-900 ℃, makes red iron oxide.
Described processed is centrifuge dehydration, filter press dehydration or belt filter press processed.
Described calcining is Industrial Stoves calcining, can be any Industrial Stoves, as long as the may command calcining temperature, and reaches 600～900 ℃ and gets final product.
Described molysite water conditioner is ferrous sulfate, bodied ferric sulfate, iron protochloride or iron(ic) chloride.
The present invention has following advantage and beneficial effect:
The present invention is turned waste into wealth, and with ferruginous materialized mud, is converted into useful dry oxidation iron oxide red, has solved the difficult problem of waste water treatment plant's materialized mud ultimate disposal.The red iron oxide of this dry production is compared with the dry oxidation iron oxide red with ferrous sulfate production, does not produce air environmental pollutions such as sulfurous gas, and production process is lower to the extent of corrosion of equipment.In addition, these materialized muds not only do not need buying, and the supplier of these materialized muds also can provide certain materialized mud ultimate disposal expense, and the red iron oxide of production can be sold again.So adopt the technology of new iron content materialized mud production red iron oxide, can bring considerable economic.
Embodiment
For a better understanding of the present invention, the invention will be further described below in conjunction with specific embodiment, but the present invention's scope required for protection is not limited to the scope that embodiment puts down in writing.
Embodiment 1
Certain textile printing and dyeing factory, the COD value 1000-1500mg/L of water inlet, waste water ph 9-11, add ferrous sulfate, add-on is for making that ferrous sulfate concentration in treatment sewage is 1000mg/L, add lime again, the pH value of control treatment sewage is 7-8.5, after ferrous sulfate adds in the entry, hydrolysis reaction takes place, generate ferrous hydroxide flco precipitation, by absorption charge neutrality, the electrostatic double layer of organic colloid and adsorption bridging effect in the pressurized water, the organic pollutant and the colloidalmaterial coprecipitation that suspend in the water are got off, behind the suspended substance or colloidal precipitation in the water, it is clear that water quality becomes, and removed partial organic substances, reached the materialization wastewater treatment efficiency, supernatant liquor flows into the subsequent wastewater treatment operation.The materialized mud water content that has just precipitated is high, and its water ratio is 98%.This example is that mud regularly enters sludge thickener through the rectangular sedimentation tank precipitation.
For ease of sludge dewatering, materialized mud after pipeline adds polyacrylamide, enters the belt filter press press filtration by spiral pump, and filtrate is back to the equalizing tank of front, and materialized mud is discharged, and its water ratio is 80%.The polyacrylamide consumption is generally the 0.5-2% of dewatered sludge weight; For this example, wet moisture percentage in sewage sludge reaches 98%, and then its dry matter content has only 2%, and polyacrylamide is 1% to the dosage of dewatered sludge, and then its dosage is 0.02% of a mud weight; In one ton of pending mud, add polyacrylamide 200 grams.At this moment, the iron content materialized mud loses flowability, but the surface still has the phenomenon that is clamminess, and water content is still higher.
It is dry that water ratio is that 80% materialized mud is sent in the conveyor dryer, vapor pressure 6kgf/cm
2, after drying, moisture percentage in sewage sludge is 10%.The materialized mud of this moment, the feel drying, be not clamminess in the surface, and the hygienic state of materialized mud is also improved significantly, is convenient to store and carry.
With dried materialized mud, send into calcining in the rotation kiln (can be any Industrial Stoves, need only the may command calcining temperature, and reach 600～900 ℃), top temperature 900 in the control kiln, discharging is dry oxidation iron oxide red product.The red iron oxide ferric oxide content is 89.7%.Dried materialized mud, because of the large amount of organic of bringing into precipitation in the wastewater treatment process, this mud has certain combustion heat value, can save the consumption of fuel in the calcination process greatly.By rotary kiln calcining, organism is burned gasification rapidly, and what stay is target product: red iron oxide.
Embodiment 2
Another textile printing and dyeing factory, the COD value 700-1000mg/L of water inlet, waste water ph 9-11, add iron protochloride, add-on is for making that ferrous sulfate concentration in treatment sewage is 500mg/L, add yellow soda ash again, the pH value of control flocculation reaction deposition is 7-8.5, after iron protochloride adds in the entry, hydrolysis reaction takes place, generate ferrous hydroxide flco precipitation, by absorption charge neutrality, the electrostatic double layer of organic colloid and adsorption bridging effect in the pressurized water, the organic pollutant and the colloidalmaterial coprecipitation that suspend in the water are got off, behind the suspended substance or colloidal precipitation in the water, it is clear that water quality becomes, and removed partial organic substances, reached the materialization wastewater treatment efficiency, supernatant liquor flows into the subsequent wastewater treatment operation.The materialized mud water content that has just precipitated is high, and its water ratio is 98%.This example is that mud regularly enters sludge thickener through the rectangular sedimentation tank precipitation.
For ease of sludge dewatering, materialized mud after pipeline adds polyacrylamide, enters the belt filter press press filtration by spiral pump, and filtrate is back to the equalizing tank of front, and materialized mud is discharged, and its water ratio is 80%.The polyacrylamide consumption is generally the 0.5-2% of dewatered sludge weight; For this example, wet moisture percentage in sewage sludge reaches 96%, and then its dry matter content has only 4%, and polyacrylamide is 0.5% to the dosage of dewatered sludge, and its dosage is 0.02% of a mud weight; In one ton of pending mud, add polyacrylamide 200 grams.At this moment, the iron content materialized mud loses flowability, but the surface still has the phenomenon that is clamminess, and water content is still higher.
It is dry that water ratio is that 65% materialized mud is sent in the baking oven, vapor pressure 4kgf/cm
2, after drying, moisture percentage in sewage sludge is 15%.The materialized mud of this moment, the feel drying, be not clamminess in the surface, and the hygienic state of materialized mud is also improved significantly, is convenient to store and carry.
With dried materialized mud, to send in the rotation kiln, top temperature is 800 ℃ in the control kiln, and discharging is dry oxidation iron oxide red product.The red iron oxide ferric oxide content is 83.5%.
Embodiment 3
Certain paper mill, the COD value 600-800mg/L of water inlet, waste water ph 7-9, add bodied ferric sulfate, add-on is for making that ferrous sulfate concentration in treatment sewage is 200mg/L, add yellow soda ash again, the pH value of control flocculation reaction deposition is 7-8, after bodied ferric sulfate adds in the entry, hydrolysis reaction takes place, generate ironic hydroxide flco precipitation, by absorption charge neutrality, the electrostatic double layer of organic colloid and adsorption bridging effect in the pressurized water, the organic pollutant and the colloidalmaterial coprecipitation that suspend in the water are got off, behind the suspended substance or colloidal precipitation in the water, it is clear that water quality becomes, and removed partial organic substances, reached the materialization wastewater treatment efficiency, supernatant liquor flows into the subsequent wastewater treatment operation.The materialized mud water content that has just precipitated is high, and its water ratio is 99%.This example is that mud regularly enters sludge thickener through the radical sedimentation basin precipitation.
For ease of sludge dewatering, materialized mud after pipeline adds polyacrylamide, enters the belt filter press press filtration by spiral pump, and filtrate is back to the equalizing tank of front, and materialized mud is discharged, and its water ratio is 78%.For this example, wet moisture percentage in sewage sludge reaches 99%, and then its dry matter content has only 1%, and polyacrylamide is 2% to the dosage of dewatered sludge, and its dosage is 0.02% of a mud weight; In one ton of pending mud, add polyacrylamide 200 grams.At this moment, the iron content materialized mud loses flowability, but the surface still has the phenomenon that is clamminess, and water content is still higher.
The materialized mud of water ratio about 78% is sent into drying in the belt water extracter, vapor pressure 6kgf/cm
2, after drying, moisture percentage in sewage sludge about 10%.The materialized mud of this moment, the feel drying, be not clamminess in the surface, and the hygienic state of materialized mud is also improved significantly, is convenient to store and carry.
With dried materialized mud, to send in the rotation kiln, top temperature is 600 ℃ in the control kiln, and discharging is dry oxidation iron oxide red product.The red iron oxide ferric oxide content is 75.3%.
Because of the salt hot metal treating agent is used widely in the treating processes of trade effluent, and use the molysite water conditioner to produce a large amount of materialized muds, the disposal of these materialized muds never well solves.The present invention is the angle from turning waste into wealth, utilize oxygen ferric oxide or ferrous hydroxide in these materialized muds, in the process of dry and calcination, ironic hydroxide and ferrous hydroxide are converted into ferric oxide (red iron oxide), in the process of calcination, the organism in the materialized mud is removed by deodorization by incineration, when obtaining the dry oxidation iron oxide red, can thoroughly solve the ultimate disposal problem of materialized mud again.And prior art ferrous sulfate dry production red iron oxide, also there is the air pollution problems inherent that generates a large amount of sulfurous gas, if use ferrous sulfate as water conditioner, after handling water, the materialized mud of generation, ferrous sulfate just are converted into the throw out of ferrous hydroxide, utilize this throw out dry production red iron oxide, alleviated the air pollution problems inherent of sulfurous gas greatly, lower than directly polluting with ferrous sulfate dry production red iron oxide, the effective measure that still turn waste into wealth.
Claims (3)
1. utilize the materialized mud of molysite water conditioner to prepare the method for red iron oxide, it is characterized in that: will use the dispose of sewage materialized mud of back gained of molysite water conditioner to carry out processed earlier, and dewater to the water ratio of materialized mud and reduce to 65-80%; Then the materialized mud after the dehydration is dried, make its water content drop to 5-30%, calcining again, the control calcining temperature is 600-900 ℃, makes red iron oxide;
Described molysite water conditioner is ferrous sulfate, bodied ferric sulfate, iron protochloride or iron(ic) chloride;
In materialized mud, add polyacrylamide before the processed; Described polyacrylamide consumption is the 0.5-2% of dewatered sludge weight.
2. the materialized mud that utilizes the molysite water conditioner according to claim 1 prepares the method for red iron oxide, it is characterized in that: described processed is centrifuge dehydration, filter press dehydration or belt filter press processed.
3. the materialized mud that utilizes the molysite water conditioner according to claim 1 prepares the method for red iron oxide, it is characterized in that: described calcining is the Industrial Stoves calcinings.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100395166A CN101559983B (en) | 2009-05-15 | 2009-05-15 | Method for preparing red iron oxide by utilizing materialized mud of malysite water treatment agent |
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| CN2009100395166A CN101559983B (en) | 2009-05-15 | 2009-05-15 | Method for preparing red iron oxide by utilizing materialized mud of malysite water treatment agent |
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| CN101559983B true CN101559983B (en) | 2011-03-02 |
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| CN102863137B (en) * | 2012-10-23 | 2014-03-05 | 开滦能源化工股份有限公司 | Comprehensive utilization method and comprehensive utilization system for biochemical sludge |
| CN104973745A (en) * | 2014-04-11 | 2015-10-14 | 河北建支铸造集团有限公司 | Harmless treatment method of red sludge in after-treatment liquid of cold galvanizing |
| CN107381863A (en) * | 2017-07-24 | 2017-11-24 | 河北师范大学 | A kind of degraded highly salt containing organic waste water and the method for synchronously preparing iron oxide |
| CN108439483A (en) * | 2018-06-01 | 2018-08-24 | 茂名粤桥集团矿业有限公司 | A kind of production method of ferric oxide red colorant |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077206A (en) * | 1992-04-08 | 1993-10-13 | 李文政 | Method for preparing iron oxide red from iron mud waste residue |
| CN1609004A (en) * | 2003-10-17 | 2005-04-27 | 鞍山科技大学 | Process of producing iron oxide red with waste iron ore slime |
| CN1616553A (en) * | 2004-09-15 | 2005-05-18 | 胡修权 | Method for preparing iron oxide black and iron oxide red dye using steel-making convertor sludge |
-
2009
- 2009-05-15 CN CN2009100395166A patent/CN101559983B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077206A (en) * | 1992-04-08 | 1993-10-13 | 李文政 | Method for preparing iron oxide red from iron mud waste residue |
| CN1609004A (en) * | 2003-10-17 | 2005-04-27 | 鞍山科技大学 | Process of producing iron oxide red with waste iron ore slime |
| CN1616553A (en) * | 2004-09-15 | 2005-05-18 | 胡修权 | Method for preparing iron oxide black and iron oxide red dye using steel-making convertor sludge |
Non-Patent Citations (1)
| Title |
|---|
| JP平3-8727A 1991.01.16 |
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