CN103693727A - Method for sewage neutralization and efficient cyclic utilization of waste residue - Google Patents
Method for sewage neutralization and efficient cyclic utilization of waste residue Download PDFInfo
- Publication number
- CN103693727A CN103693727A CN201310697359.4A CN201310697359A CN103693727A CN 103693727 A CN103693727 A CN 103693727A CN 201310697359 A CN201310697359 A CN 201310697359A CN 103693727 A CN103693727 A CN 103693727A
- Authority
- CN
- China
- Prior art keywords
- filter
- kiln
- weight percentage
- enters
- slag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000010865 sewage Substances 0.000 title claims abstract description 22
- 239000002699 waste material Substances 0.000 title claims abstract description 16
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 8
- 125000004122 cyclic group Chemical group 0.000 title abstract 3
- 239000002253 acid Substances 0.000 claims abstract description 22
- 238000001354 calcination Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 14
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 39
- 239000000292 calcium oxide Substances 0.000 claims description 30
- 239000002893 slag Substances 0.000 claims description 29
- 230000018044 dehydration Effects 0.000 claims description 22
- 238000006297 dehydration reaction Methods 0.000 claims description 22
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 16
- 230000003472 neutralizing effect Effects 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000012065 filter cake Substances 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- 239000004927 clay Substances 0.000 claims description 11
- 239000000571 coke Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 239000002562 thickening agent Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000002351 wastewater Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000005273 aeration Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000012141 concentrate Substances 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 5
- 238000003837 high-temperature calcination Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 4
- 238000003723 Smelting Methods 0.000 abstract description 3
- 230000008929 regeneration Effects 0.000 abstract description 3
- 238000011069 regeneration method Methods 0.000 abstract description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010931 gold Substances 0.000 abstract description 2
- 229910052737 gold Inorganic materials 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 235000012255 calcium oxide Nutrition 0.000 description 27
- 238000001035 drying Methods 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The invention belongs to the technical field of environment protection in gold smelting, and sewage purification treatment, recycling regeneration and comprehensive utilization of chemical industry, and especially relates to a method for sewage neutralization and efficient cyclic utilization of waste residue. The method comprises the following steps of 1) acid sewage neutralization treatment process; 2) filter pressing and dehydrating by a pressure filter; 3) baking and dehydrating by a rotary kiln; 4) roasting in a rotary calcining kiln; 5) returning back calcined product to each system. The method realizes efficient cyclic utilization in closed loop, improves comprehensive utilization of resource, not only increases economic benefits of enterprises, but also has environment-protection and social benefits.
Description
Technical field
The invention belongs to gold smelting and chemical industry the dirty water decontamination handles, resource utilization regeneration and the environmental protection technical field fully utilizing, relate in particular to a kind of method of utilizing with waste residue efficient circulation in sewage.
Background technology
At flue gas during smelting, produce in sulfuric acid process, one ton of sulfuric acid of every production approximately produces more than 100 kilogram of acid waste water, the processing of acid waste water adopts lime or alkaline electro rock ballast to carry out neutralizing treatment conventionally, process one cube approximately discharge approximately 150 kilograms in and waste residue (in abbreviation and slag), at present mainly as cement mill additive cheapness, sell outward or adopt the mode of storing up to process, both occupied soil, increased enterprise's maintenance cost and overhead charges, also ecotope had around been existed to potential impact., in discarding, do not utilized with slag meanwhile, caused the significant wastage of Mineral resources yet.According to investigations and Introduction of Literatures, in and the main component of slag be gypsum (CaSO
42H
2o), can be processed into plaster of Paris for the production of material of construction such as gypsum lath, building blocks, or for the production of cement setting retarder, but in practical application process, technical matters is complicated, standard-required is strict, and processing cost is higher, and benefit is not obvious, for this reason, research and probe is a kind of efficiently, resourcebility regeneration seems particularly important with the method for recycle, and realization is turned waste into wealth, reduction expense, raising Business Economic Benefit.
Summary of the invention
For solving the deficiencies in the prior art, the invention provides a kind of method of utilizing with waste residue efficient circulation in sewage.
A method of utilizing with waste residue efficient circulation in sewage, comprises the following steps:
1) acid effluent sewage neutralizing treatment technique
The acid waste water that is 5～15% by the weight percentage of sulfuric acid input steel basin, via belt, transport the high alkalinity calcium oxide slag that adds the rear output of calcining, control pH=7, abundant aeration in N-process, 6～8 hours time, the grout that after neutralization, quality percentage composition is 5～8% enters thickener and concentrates, and overflow is returned to relieving haperacidity cleaning section and used, and the high concentration slurry that quality percentage composition is 30～45% enters filter-press dehydration operation;
2) pressure filter filter-press dehydration
Described high concentration slurry is squeezed into pressure filter through pump and carry out squeeze and filter dehydration, obtain filter cake, filtrate is returned to described thickener, and wherein, the filter cake that the weight percentage of water is 45～50% enters rotary kiln and cures operation;
3) rotary kiln cures dehydration
The filter cake that is 45～50% by the weight percentage of water enters rotary kiln through rotary conveyor, 650～700 ℃ of rotary kiln end stoving temperatures, 120～150 ℃ of kiln end temperatures, cure 1.5～2 hours time, the weight percentage that obtains water after oven dry reduce to 5～8% in and slag;
4) rotary calciner roasting
By the weight percentage of the water of step 3) gained reduce to 5～8% in and slag, coke, clay, alumina mix, mixed batch mixing enters high-temperature calcination kiln, 1200 ℃ of temperature of kiln head, 850 ℃ of kiln end temperatures, calcination time 3～5 hours, in calcination process, output contains high-temperature flue gas and the high alkalinity calcium oxide slag that the weight percentage of sulfurous gas is 5～8%;
5) calcinate returns to each system
The high-temperature flue gas that is 5～8% by the weight percentage of sulfurous gas returns for gas washing in SA production; High alkalinity calcium oxide slag returns to the acid effluent sewage neutralizing treatment technique of described step 1).
Above, the chemical equation relating in step 4) is:
CaSO
4+2C→CaO+SO
2+CO
The chemical equation relating in step 5) comprises:
2SO
2+O
2→SO
3
SO
3+H
2O→H
2SO
4
CaO+H
2sO
4(rare)+H
2o → CaSO
42H
2o
Each component of preferably, preparing burden described in step 4) and the ratio of weight and number of each component are: in and waste residue: coke: clay: alumina=90～93:2～3:2～3:5～7.
The present invention has utilized the trade waste of a large amount of discharges in preparation of ethyne by carbide process, and its main component is Ca (OH)
2deng alkaline matter, can be used as the neutralizing treatment agent of acid effluent sewage, after neutralizing acid wastewater, primary water can return to recycle in production technique, and the solid slag main component of discharge is gypsum (CaSO
4.2H
2o), through efficient pressure filter dehydration, rotary kiln cures except cyanogen dehydration, enters rotary calciner roasting obtain unslaked lime and return to acid effluent sewage neutralized system technique, the SO producing with the mix such as coke, clay, alumina
2be incorporated to flue gas acid preparing system and generate 98% sulfuric acid, realize closed circuit efficient circulation utilization, improved comprehensive utilization of resources, not only increased the economic benefit of enterprise but also there is environment protection and social benefit.
Embodiment
Below principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1:
1) acid effluent sewage neutralizing treatment technique
The acid waste water of sulfuric acid concentration 5% enters the steel basin of 4 series connection, add the high alkalinity calcium oxide slag of the rear output of calcining and control PH=7, abundant aeration in N-process, 6 hours time, the grout of neutralization rear 5.5% enters thickener and concentrates, overflow is returned to relieving haperacidity cleaning section and is used, and high concentration slurry enters filter-press dehydration operation;
2) pressure filter filter-press dehydration
High concentration slurry is squeezed into pressure filter through pump and is carried out squeeze and filter dehydration, and filtrate is returned to thickener, and the filter cake of moisture content 45% enters rotary kiln and cures operation;
3) rotary kiln cures dehydration
The filter cake of moisture content 45% enters through rotary conveyor and enters rotary kiln, 650 ℃ of rotary kiln end stoving temperatures, 120 ℃ of kiln end temperatures, cure 1.5 hours time, after drying moisture reduce to 5% in and slag enter calcination process;
4) rotary calciner roasting
In being 5% by the moisture of step 3) gained and slag, with coke, clay, alumina mix, the ratio of weight and number of each component of preparing burden is: in and waste residue: coke: clay: alumina=90:2:2:5, mixed batch mixing is entered to high-temperature calcination kiln, 1200 ℃ of temperature of kiln head, 850 ℃ of kiln end temperatures, calcination time 3.5 hours, in calcination process, output is containing the high-temperature flue gas and the high alkalinity calcium oxide slag that contains effective calcium oxide 92% of sulfurous gas 5.1%; Chemical equation:
CaSO
4+2C→CaO+SO
2+CO
5) calcinate returns to each system
High-temperature flue gas containing sulfurous gas 5.1% returns to metallurgical off-gas acid-making wet purification dedusting operation, for gas washing in SA production; High alkalinity calcium oxide slag containing effective calcium oxide 92% returns to acid effluent sewage neutralizing treatment technique.Chemical equation:
2SO
2+O
2→SO
3
SO
3+H
2O→H
2SO
4
CaO+H
2sO
4(rare)+H2O → CaSO
42H
2o
Embodiment 2:
1) acid effluent sewage neutralizing treatment technique
The acid waste water of sulfuric acid concentration 10% enters the steel basin of 4 series connection, add the high alkalinity calcium oxide slag of the rear output of calcining and control PH=7, abundant aeration in N-process, 7 hours time, the grout of neutralization rear 7% enters thickener and concentrates, overflow is returned to relieving haperacidity cleaning section and is used, and high concentration slurry enters filter-press dehydration operation;
2) pressure filter filter-press dehydration
High concentration slurry is squeezed into pressure filter through pump and is carried out squeeze and filter dehydration, and filtrate is returned to thickener, and the filter cake of moisture content 48% enters rotary kiln and cures operation;
3) rotary kiln cures dehydration
The filter cake of moisture content 48% enters through rotary conveyor and enters rotary kiln, 680 ℃ of rotary kiln end stoving temperatures, 135 ℃ of kiln end temperatures, cure 1.8 hours time, after drying moisture reduce to 7% in and slag enter calcination process;
4) rotary calciner roasting
In being 7% by step 3) gained moisture and slag, with coke, clay, alumina mix, the ratio of weight and number of each component of preparing burden is: in and waste residue: coke: clay: alumina=92:2.5:2.5:6, mixed batch mixing is entered to high-temperature calcination kiln, 1200 ℃ of temperature of kiln head, 850 ℃ of kiln end temperatures, calcination time 4 hours, in calcination process, output is containing the high-temperature flue gas and the high alkalinity calcium oxide slag that contains effective calcium oxide 94% of sulfurous gas 7%; Chemical equation:
CaSO
4+2C→CaO+SO
2+CO
5) calcinate returns to each system
High-temperature flue gas containing sulfurous gas 7% returns to metallurgical off-gas acid-making wet purification dedusting operation, for gas washing in SA production; High alkalinity calcium oxide slag containing effective calcium oxide 94% returns to acid effluent sewage neutralizing treatment technique.Chemical equation:
2SO
2+O
2→SO
3
SO
3+H
2O→H
2SO
4
CaO+H
2sO
4(rare)+H
2o → CaSO
42H
2o
Embodiment 3:
1) acid effluent sewage neutralizing treatment technique
The acid waste water of sulfuric acid concentration 15% enters the steel basin of 4 series connection, add the high alkalinity calcium oxide slag of the rear output of calcining and control PH=7, abundant aeration in N-process, 8 hours time, the grout of neutralization rear 8% enters thickener and concentrates, overflow is returned to relieving haperacidity cleaning section and is used, and high concentration slurry enters filter-press dehydration operation;
2) pressure filter filter-press dehydration
High concentration slurry is squeezed into pressure filter through pump and is carried out squeeze and filter dehydration, and filtrate is returned to thickener, and the filter cake of moisture content 50% enters rotary kiln and cures operation;
3) rotary kiln cures dehydration
The filter cake of moisture content 50% enters through rotary conveyor and enters rotary kiln, 699 ℃ of rotary kiln end stoving temperatures, 150 ℃ of kiln end temperatures, cure time 2 h, after drying moisture reduce to 8% in and slag enter calcination process;
4) rotary calciner roasting
In being 8% by step 3) gained moisture and slag, with coke, clay, alumina mix, the ratio of weight and number of each component of preparing burden is: in and waste residue: coke: clay: alumina=93:3:3:7, mixed batch mixing is entered to high-temperature calcination kiln, 1200 ℃ of temperature of kiln head, 850 ℃ of kiln end temperatures, calcination time 5 hours, in calcination process, output is containing the high-temperature flue gas and the high alkalinity calcium oxide slag that contains effective calcium oxide 95.2% of sulfurous gas 7.5%; Chemical equation:
CaSO
4+2C→CaO+SO2+CO
5) calcinate returns to each system
High-temperature flue gas containing sulfurous gas 7.5% returns to metallurgical off-gas acid-making wet purification dedusting operation, for gas washing in SA production; High alkalinity calcium oxide slag containing effective calcium oxide 95.2% returns to acid effluent sewage neutralizing treatment technique.Chemical equation:
2SO
2+O
2→SO
3
SO
3+H
2O→H
2SO
4
CaO+H
2sO
4(rare)+H
2o → CaSO
42H
2o
Embodiment 1 to 3 practices data in Table 1.
Table 1: embodiment 1 to 3 practices data sheet
The foregoing is only better embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. a method of utilizing with waste residue efficient circulation in sewage, comprises the following steps:
1) acid effluent sewage neutralizing treatment technique
The acid waste water that is 5～15% by the weight percentage of sulfuric acid input steel basin, add the high alkalinity calcium oxide slag of the rear output of calcining, control pH=7, abundant aeration in N-process, 6～8 hours time, the grout that after neutralization, quality percentage composition is 5～8% enters thickener and concentrates, and overflow is returned to relieving haperacidity cleaning section and used, and the high concentration slurry that quality percentage composition is 30～45% enters filter-press dehydration operation;
2) pressure filter filter-press dehydration
Described high concentration slurry is squeezed into pressure filter through pump and carry out squeeze and filter dehydration, obtain filter cake, filtrate is returned to described thickener, and wherein, the filter cake that the weight percentage of water is 45～50% enters rotary kiln and cures operation;
3) rotary kiln cures dehydration
The filter cake that is 45～50% by the weight percentage of water is sent into rotary kiln, 650～700 ℃ of rotary kiln end stoving temperatures, 120～150 ℃ of kiln end temperatures, cure 1.5～2 hours time, the weight percentage that obtains water after oven dry reduce to 5～8% in and slag;
4) rotary calciner roasting
By the weight percentage of the water of step 3) gained reduce to 5～8% in and slag, coke, clay, alumina mix, mixed batch mixing enters high-temperature calcination kiln, 1200 ℃ of temperature of kiln head, 850 ℃ of kiln end temperatures, calcination time 3～5 hours, in calcination process, output contains high-temperature flue gas and the high alkalinity calcium oxide slag that the weight percentage of sulfurous gas is 5～8%;
5) calcinate returns to each system
The high-temperature flue gas that is 5～8% by the weight percentage of sulfurous gas returns for gas washing in SA production; High alkalinity calcium oxide slag returns to the acid effluent sewage neutralizing treatment technique of described step 1).
2. in sewage according to claim 1 and the method utilized of waste residue efficient circulation, each component of preparing burden described in step 4) and the ratio of weight and number of each component are: in and waste residue: coke: clay: alumina=90～93:2～3:2～3:5～7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310697359.4A CN103693727B (en) | 2013-12-18 | 2013-12-18 | Method for sewage neutralization and efficient cyclic utilization of waste residue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310697359.4A CN103693727B (en) | 2013-12-18 | 2013-12-18 | Method for sewage neutralization and efficient cyclic utilization of waste residue |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103693727A true CN103693727A (en) | 2014-04-02 |
| CN103693727B CN103693727B (en) | 2015-05-13 |
Family
ID=50355424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310697359.4A Active CN103693727B (en) | 2013-12-18 | 2013-12-18 | Method for sewage neutralization and efficient cyclic utilization of waste residue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103693727B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045181A (en) * | 2014-05-08 | 2014-09-17 | 昆明有色冶金设计研究院股份公司 | Waste acid treatment system and method |
| CN104046781A (en) * | 2014-06-30 | 2014-09-17 | 天津盈辉投资有限公司 | Treatment method for realizing comprehensive utilization of industrial acid pickling waste liquid and sulfate slag |
| CN104192970A (en) * | 2014-08-04 | 2014-12-10 | 贵州省工业固体废弃物综合利用（建材）工程技术研究中心 | Carbide slag sustained-release material for treating acidic wastewater and preparation method thereof |
| CN105087937A (en) * | 2015-07-22 | 2015-11-25 | 南京格洛特环境工程股份有限公司 | Processing method for achieving reduction and resource utilization of neutral slag produced in rare earth industry |
| CN105692954A (en) * | 2016-02-14 | 2016-06-22 | 楚雄滇中有色金属有限责任公司 | Method of reducing residue yield during acidic wastewater treatment |
| CN106745637A (en) * | 2016-12-07 | 2017-05-31 | 江西稀有金属钨业控股集团有限公司 | A kind of Application way of tungsten slag, using device and purposes |
| CN112254148A (en) * | 2020-10-21 | 2021-01-22 | 重庆浩泽企业管理有限公司 | Paint residue harmless treatment process and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724405A (en) * | 2005-06-28 | 2006-01-25 | 贵州宏福实业开发有限总公司 | Process for treating and controlling acid waste water containing fluorine |
| CN101343047A (en) * | 2008-08-26 | 2009-01-14 | 山东鲁北企业集团总公司 | Improved preparation technique for preparing sulphuric acid and cement with gypsum |
| CN101811792A (en) * | 2009-02-24 | 2010-08-25 | 宝山钢铁股份有限公司 | Processing method of stainless steel cold rolling pickling wastewater |
| CN103011447A (en) * | 2012-11-28 | 2013-04-03 | 浙江和鼎铜业有限公司 | Recycling and treating method of sulfuric acid waste sewage |
| CN103058253A (en) * | 2013-01-21 | 2013-04-24 | 菲徳勒环境生态工程（苏州）有限公司 | Method for preparing gypsum by free sulfuric acid in titanium dioxide wastewater |
-
2013
- 2013-12-18 CN CN201310697359.4A patent/CN103693727B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724405A (en) * | 2005-06-28 | 2006-01-25 | 贵州宏福实业开发有限总公司 | Process for treating and controlling acid waste water containing fluorine |
| CN101343047A (en) * | 2008-08-26 | 2009-01-14 | 山东鲁北企业集团总公司 | Improved preparation technique for preparing sulphuric acid and cement with gypsum |
| CN101811792A (en) * | 2009-02-24 | 2010-08-25 | 宝山钢铁股份有限公司 | Processing method of stainless steel cold rolling pickling wastewater |
| CN103011447A (en) * | 2012-11-28 | 2013-04-03 | 浙江和鼎铜业有限公司 | Recycling and treating method of sulfuric acid waste sewage |
| CN103058253A (en) * | 2013-01-21 | 2013-04-24 | 菲徳勒环境生态工程（苏州）有限公司 | Method for preparing gypsum by free sulfuric acid in titanium dioxide wastewater |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045181A (en) * | 2014-05-08 | 2014-09-17 | 昆明有色冶金设计研究院股份公司 | Waste acid treatment system and method |
| CN104045181B (en) * | 2014-05-08 | 2016-01-20 | 昆明有色冶金设计研究院股份公司 | A kind of dirty acid treatment system and method |
| CN104046781A (en) * | 2014-06-30 | 2014-09-17 | 天津盈辉投资有限公司 | Treatment method for realizing comprehensive utilization of industrial acid pickling waste liquid and sulfate slag |
| CN104192970A (en) * | 2014-08-04 | 2014-12-10 | 贵州省工业固体废弃物综合利用（建材）工程技术研究中心 | Carbide slag sustained-release material for treating acidic wastewater and preparation method thereof |
| CN104192970B (en) * | 2014-08-04 | 2016-03-23 | 贵州省工业固体废弃物综合利用（建材）工程技术研究中心 | Carbide slag slow-release material of a kind for the treatment of of acidic wastewater and preparation method thereof |
| CN105087937A (en) * | 2015-07-22 | 2015-11-25 | 南京格洛特环境工程股份有限公司 | Processing method for achieving reduction and resource utilization of neutral slag produced in rare earth industry |
| CN105692954A (en) * | 2016-02-14 | 2016-06-22 | 楚雄滇中有色金属有限责任公司 | Method of reducing residue yield during acidic wastewater treatment |
| CN106745637A (en) * | 2016-12-07 | 2017-05-31 | 江西稀有金属钨业控股集团有限公司 | A kind of Application way of tungsten slag, using device and purposes |
| CN112254148A (en) * | 2020-10-21 | 2021-01-22 | 重庆浩泽企业管理有限公司 | Paint residue harmless treatment process and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103693727B (en) | 2015-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103693727B (en) | Method for sewage neutralization and efficient cyclic utilization of waste residue | |
| CN100513341C (en) | Method for producing cement and vitriol from high silicon ardealite | |
| CN104386720B (en) | Method for acid-alkali combined extraction of alumina from high-silicon aluminum-containing mineral raw material | |
| CN104787788B (en) | Method for producing alumina from high-alumina fly ash | |
| CN106882932B (en) | A kind of method of comprehensive utilization of red mud | |
| CN102515590B (en) | Process for producing sulphoaluminate cement by proportioning for direct slurry of red mud | |
| CN105565693B (en) | A kind of preparation method of gypsum composite gelled material | |
| CN104310836A (en) | Modified phosphogypsum as well as preparation method and use of modified phosphogypsum | |
| CN108672472A (en) | It is sintered semi-dry desulphurization ash processing method | |
| CN103613079A (en) | Method for producing sulfuric acid from electrolytic manganese residues | |
| CN108516709A (en) | It is a kind of using Pb-Zn tailings as sulphoaluminate cement clinker of raw material and preparation method thereof | |
| CN113996639A (en) | Synergistic harmless treatment method for barium slag and phosphogypsum | |
| CN101880179B (en) | Method for preparing potash fertilizer and building material products from white alkali-making mud | |
| CN101623592A (en) | Process for comprehensively treating waste acid and desulphurized ash | |
| CN103664035A (en) | Clinker-free slag-fly ash composite cement activator and preparation method thereof | |
| RU2393241C1 (en) | Procedure for processing fine-dispersed sodium-fluorine-carbon containing wastes of electrolytic production of aluminium | |
| CN112624651A (en) | Resource utilization method of electrolytic manganese filter-pressing residues | |
| CN106698988B (en) | Carbonate rock modified phosphogypsum and preparation method thereof | |
| CN106810094B (en) | The system and method for cement joint production sulphur is prepared using municipal waste and Industrial Solid Waste | |
| CN104787790A (en) | Method for extracting aluminum oxide and silicon oxide from coal-based solid waste | |
| CN104402271B (en) | A kind of mud is used for the ridge grain seeding method of dry-process rotary kiln | |
| CN101239706B (en) | Method for producing calcium sulfide from calcium sulfate | |
| CN106966617B (en) | Easy fired belite-aluminium sulfate-sulphur ferrous aluminate-sulphur calcium silicate cement clinker method | |
| CN107188436A (en) | A kind of green cement and preparation method thereof | |
| CN104803403A (en) | Acid-alkali combined process for extracting alumina from coal-based solid waste through pre-desilication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lv Shouming Inventor after: Wang Jianzheng Inventor after: Sun Zhongsheng Inventor after: Liang Zhiwei Inventor before: Liang Zhiwei Inventor before: Lv Shouming Inventor before: Wang Jianzheng Inventor before: Sun Zhongsheng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIANG ZHIWEI LV SHOUMING WANG JIANZHENG SUN ZHONGSHENG TO: LV SHOUMING WANG JIANZHENG SUN ZHONGSHENG LIANG ZHIWEI |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method for efficient recycling of sewage neutralization waste residue Effective date of registration: 20211202 Granted publication date: 20150513 Pledgee: Zhaoyuan Huatang Trading Co.,Ltd. Pledgor: SHANDONG GUODA GOLD Co.,Ltd. Registration number: Y2021980013873 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220622 Granted publication date: 20150513 Pledgee: Zhaoyuan Huatang Trading Co.,Ltd. Pledgor: SHANDONG GUODA GOLD Co.,Ltd. Registration number: Y2021980013873 |