CN101921080B - Method for utilizing sludge generated by adopting carbide slag or quick lime to process titanium dioxide wastewater - Google Patents
Method for utilizing sludge generated by adopting carbide slag or quick lime to process titanium dioxide wastewater Download PDFInfo
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- CN101921080B CN101921080B CN201010251186XA CN201010251186A CN101921080B CN 101921080 B CN101921080 B CN 101921080B CN 201010251186X A CN201010251186X A CN 201010251186XA CN 201010251186 A CN201010251186 A CN 201010251186A CN 101921080 B CN101921080 B CN 101921080B
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- titanium dioxide
- carbide slag
- quick lime
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- unslaked lime
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Processing Of Solid Wastes (AREA)
Abstract
The invention relate to a method for comprehensively utilizing sludge generated from the processing of by adopting carbide slag or quick lime to process low-concentration sulfuric acid generated in the production process of titanium dioxide. The method is characterized by comprising the following steps of: drying the sludge generated by adopting the carbide slag or the quick lime to process the low-concentration sulfuric acid generated in the production process of the titanium dioxide by using hot air until the sludge contains the water of less than 20%, adding a proper amount of pulverized fuel ash, quick lime and reinforcing agents, moulding by fully rolling, and then naturally drying to obtain a building block product. A gypsum building block manufactured in the method has the multipurpose characteristics of high strength, heat insulation, moisture preservation, light weight and the like, can replace the original pulverized fuel ash baking-free bricks and clay bricks and can save limited resources, thereby taking the effect of comprehensive resource utilization.
Description
Technical field
The present invention relates to the lower concentration titanium dioxide wastewater adopts carbide slag or unslaked lime to handle the method for comprehensive utilization of the mud of back generation.
Background technology
White titanium pigment is a kind of white pigment, and formal name used at school titanium oxide is a kind of important inorganic chemical product.(concentration is with H in the production process of white titanium pigment, to produce the sulfuric acid of a large amount of lower concentrations
2SO
4Meter is less than below 5%), after the acid waste water of this lower concentration is merely able to handle through the mode of acid-base neutralisation, can reach the emission standard of environmental protection.But adopt basic soln such as sodium hydroxide to handle at present, production cost is too high, adopts carbide slag or unslaked lime to handle, and production cost reduces greatly, but the mud that produces pushes away and accumulates high-volume greatly especially, also causes dust pollution easily.
Summary of the invention
Technical problem to be solved by this invention provides a kind of titanium dioxide wastewater and adopts carbide slag or unslaked lime to handle the method for utilizing of the back mud that produces, and can reduce the accumulation of mud, and mud is turned waste into wealth.
A kind of titanium dioxide wastewater of the present invention adopts carbide slag or unslaked lime to handle the method for utilizing of mud that the back produces, it is characterized in that it being the sulfuric acid of the lower concentration that in the Producing Titanium Dioxide process, produces, adopt carbide slag or unslaked lime handle mud that the back generates through hot-air seasoning to water cut less than 20wt%; In sludge quality; The flyash that adds 1-10%, the unslaked lime of 1-5% and the toughener of 0.1-1.0%, thorough mixing; Extrusion molding obtains the building block product.
Said toughener can 9 adopts conventional concrete intensifier; The preferred latest generation perviousness stiffening agent material that adopts Yunnan to return precious waterproof reinforced Engineering Co., Ltd; Containing elite high reactivity fluorine titanium thing, is environmental protection colourless transparent liquid (tasteless, nontoxic, do not fire), and its PIN is: 09060033.
The present invention be the lower concentration titanium dioxide wastewater with carbide slag or unslaked lime handle mud that the back produces the basis on the reprocessing utilization carried out.Be intended to improve the utilization of mud, reduce the stacking and the dust pollution of mud, turn waste into wealth.More specific technology is: the mud that titanium dioxide wastewater produces after handling with carbide slag or unslaked lime is under the effect at hot blast, and controlling moisture content is controlled at 25 less than 20wt% in the screw rod stirring---under the 50 commentaries on classics/min; The flyash that adds 1-10%, the unslaked lime of adding 1-5%, the toughener of adding 0.1-1.0%; Rolling thorough mixing 30 in the mixing tank three---behind the 45min, the pressure of control brick extruding machine is 6---under the state of 10Mpa, extrusion molding again; Gypsum block after the moulding plays buttress; Distribute according to the cross arrangement mode, highly below five layers, natural draft drying 3---obtain this building block product after 7 days.
Multi-purpose type characteristics such as the gypsum block that the present invention produces has the intensity height, heat insulationly preserves moisture, light weight make this product can replace original coal ash baking-free brick and clay brick, practice thrift limited resources, play the characteristics of comprehensive utilization of resources.
Embodiment
Following examples specify that described percentage number average refers to weight percentage.
Embodiment one:
The mud that titanium dioxide wastewater produces after handling with carbide slag is under the effect at hot blast, and controlling moisture content is 20%, stirs at screw rod to be controlled under the 25 commentaries on classics/min; In sludge quality, add 2% flyash, add 2% unslaked lime; Add 0.1% toughener (toughener is 09060033 commercially available prod that precious anti-waters corporation is returned in Yunnan, down with), roll in the mixing tank behind the thorough mixing 30min three; Control brick extruding machine pressure under the state of 6Mpa, extrusion molding again, the gypsum block after the moulding plays buttress; Distribute according to the cross arrangement mode, height is below five layers, and natural draft drying obtains this building block product after 3 days.
Embodiment two:
The mud that titanium dioxide wastewater produces after handling with unslaked lime is under the effect at hot blast, and controlling moisture content is controlled under the 30 commentaries on classics/min in the screw rod stirring less than 10%; In sludge quality, add 4% flyash, add 4% unslaked lime; Add 0.5% toughener, roll in the mixing tank behind the thorough mixing 40min three, the pressure of control brick extruding machine is under the state of 8Mpa; Extrusion molding again, the gypsum block after the moulding plays buttress, distributes according to the cross arrangement mode; Height is below five layers, and natural draft drying obtains this building block product after 6 days.
Embodiment three:
The mud that titanium dioxide wastewater produces after handling with carbide slag is under the effect at hot blast, and controlling moisture content is controlled under the 50 commentaries on classics/min in the screw rod stirring less than 15%; The flyash of adding 10%, the unslaked lime of adding 5%, the toughener of adding 1.0%; Roll in the mixing tank behind the thorough mixing 45min three, the pressure of control brick extruding machine under the state of 10Mpa, extrusion molding again; Gypsum block after the moulding plays buttress; Distribute according to the cross arrangement mode, height is below five layers, and natural draft drying obtains this building block product after 7 days.
We adopt GB15299 that laboratory sample (embodiment 1-3) is tested, and the sample index is far longer than national standard.
Claims (1)
1. a titanium dioxide wastewater adopts carbide slag or unslaked lime to handle the method for utilizing of mud that the back produces, it is characterized in that it being the sulfuric acid of the lower concentration that in the Producing Titanium Dioxide process, produces, adopt carbide slag or unslaked lime handle mud that the back generates through hot-air seasoning to water cut less than 20wt%; In sludge quality; The flyash that adds 1-10%, the unslaked lime of 1-5% and the toughener of 0.1-1.0%, thorough mixing; Extrusion molding obtains the building block product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010251186XA CN101921080B (en) | 2010-08-12 | 2010-08-12 | Method for utilizing sludge generated by adopting carbide slag or quick lime to process titanium dioxide wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010251186XA CN101921080B (en) | 2010-08-12 | 2010-08-12 | Method for utilizing sludge generated by adopting carbide slag or quick lime to process titanium dioxide wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101921080A CN101921080A (en) | 2010-12-22 |
| CN101921080B true CN101921080B (en) | 2012-08-08 |
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| CN201010251186XA Active CN101921080B (en) | 2010-08-12 | 2010-08-12 | Method for utilizing sludge generated by adopting carbide slag or quick lime to process titanium dioxide wastewater |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351557B (en) * | 2011-06-22 | 2013-06-05 | 哈尔滨工业大学 | Method for preparing non-sintered ceramsite from activated sludge blended with fly ash |
| CN104028537B (en) * | 2014-06-01 | 2016-02-17 | 许盛英 | Carbide slag after acidifying |
| CN104624380A (en) * | 2015-01-05 | 2015-05-20 | 云南铜业胜威化工有限公司 | Sulphur dressing method adopting titanium dioxide production waste water as activating agents |
| CN106311719B (en) * | 2016-08-22 | 2018-09-11 | 四川龙蟒钛业股份有限公司 | A kind of recoverying and utilizing method of carbide slag |
| CN108285233A (en) * | 2017-01-09 | 2018-07-17 | 北京水木方科技有限公司 | A kind of method of Recovery Purifying titanium white waste liquid |
| CN111943619A (en) * | 2020-07-09 | 2020-11-17 | 重庆大学 | Method for preparing foamed brick by using titanium gypsum |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1163297C (en) * | 2000-03-21 | 2004-08-25 | 朱南文 | Sludge desulfation method for fume |
| CN1197807C (en) * | 2002-12-17 | 2005-04-20 | 昆明理工大学 | Technique for producing non-extrusion clayless solid slag sintering brick |
| CN1774973A (en) * | 2005-12-08 | 2006-05-24 | 华南农业大学 | Environmental-protection fertilizing equipment and its use method for applying sludge |
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| CN101921080A (en) | 2010-12-22 |
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