CN101468792B - Novel technique for producing sulfur from industrial waste gypsum - Google Patents
Novel technique for producing sulfur from industrial waste gypsum Download PDFInfo
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- CN101468792B CN101468792B CN2007103034508A CN200710303450A CN101468792B CN 101468792 B CN101468792 B CN 101468792B CN 2007103034508 A CN2007103034508 A CN 2007103034508A CN 200710303450 A CN200710303450 A CN 200710303450A CN 101468792 B CN101468792 B CN 101468792B
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- CN
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- Prior art keywords
- reduction
- sulphur
- waste gypsum
- gypsum
- industrial waste
- Prior art date
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000010440 gypsum Substances 0.000 title claims abstract description 43
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 43
- 239000002440 industrial waste Substances 0.000 title claims abstract description 21
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 11
- 239000011593 sulfur Substances 0.000 title claims abstract description 11
- 230000009467 reduction Effects 0.000 claims abstract description 28
- 239000002699 waste material Substances 0.000 claims abstract description 28
- 239000003245 coal Substances 0.000 claims abstract description 22
- 239000004568 cement Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 11
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 230000002829 reductive effect Effects 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- -1 fluorgypsum Substances 0.000 claims abstract description 4
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims abstract description 3
- 239000000571 coke Substances 0.000 claims abstract description 3
- 238000009776 industrial production Methods 0.000 claims abstract description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract 3
- 239000005864 Sulphur Substances 0.000 claims description 42
- 238000006722 reduction reaction Methods 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 14
- 230000003197 catalytic effect Effects 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 7
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 6
- 239000011505 plaster Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 244000248349 Citrus limon Species 0.000 claims description 3
- 235000005979 Citrus limon Nutrition 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004566 building material Substances 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 235000010215 titanium dioxide Nutrition 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims 1
- 239000006227 byproduct Substances 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract description 6
- 238000011946 reduction process Methods 0.000 abstract description 2
- 239000010426 asphalt Substances 0.000 abstract 1
- 235000011132 calcium sulphate Nutrition 0.000 abstract 1
- 239000001175 calcium sulphate Substances 0.000 abstract 1
- 238000006555 catalytic reaction Methods 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 abstract 1
- 230000023556 desulfurization Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000003209 petroleum derivative Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000001038 titanium pigment Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 10
- 238000001035 drying Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 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 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000011507 gypsum plaster Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000255964 Pieridae Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Treating Waste Gases (AREA)
- Catalysts (AREA)
Abstract
The invention provides a novel process for preparing sulfur from industrial waste gypsum, which is to manufacture the sulfur or manufacture sulfur and by-product cement by reducing the industrial waste gypsum and carbon reduced materials. The industrial waste gypsum is waste gypsum residue discharged by production of phosphogypsum, desulfurization gypsum, fluorgypsum, citric acid gypsum and titanium pigment or waste residue which is discharged in industrial production and regards calcium sulphate as a main composition; and the carbon reduced materials can be coal, coke, petroleum residue or bitumen. The reduction process adopts a sulfur preparation process by one-stage or multi-stage reduction, and tail gas adopts a reducing and purifying process by one-stage or multi-stage catalysis. The process can sufficiently utilize the industrial waste gypsum and manufacture the by-product cement, has the advantages of small investment, low cost, simple process, environmental protection and resource conservation, changes waste into valuable, and has significant social benefit and economic benefit.
Description
Technical field:
The present invention relates to the industrial waste gypsum comprehensive utilization of resources, be specifically related to the new technology of producing sulfur from industrial waste gypsum or sulphur processed and by-product cement.
Background technology:
Industrial sulphur tradition method for making is mainly made by heating pyrite or by extracting in the natural sulphur ore deposit.Development along with technology, especially the application of Kraus process and ADA method and modified ADA law technology, fluidization roasting process and half magnetizing roasting reduction method technology and natural gas act and petroleum refinery's gas law technology of the useful sulfurous iron ore of technology of present industrial sulphur processed, the technology of extracting sulphur from the higher-grade plaster of paris has successfully been studied by the U.S., but equipment is complicated, the investment large.
China is the country of a sulfurous iron ore and natural sulphur ore deposit scarcity, high-quality plaster of paris resource is also very limited, need a large amount of import industrial sulphurs every year, but pile up like a mountain for China's industrial waste gypsum simultaneously, both polluted environment, also wasted resource, less in the urgent need to a kind of investment, can from all types of industries waste gypsum, put forward the new technology of sulphur.
Summary of the invention:
Technical problem to be solved by this invention is: solve the problem that above-mentioned prior art exists, and a kind of little, lower-cost novel technique of investment that can take full advantage of producing sulfur from industrial waste gypsum or sulphur processed and by-product cement is provided.
Technical scheme of the present invention is: adopt the reduction of industrial waste gypsum and carbonaceous reducing material to make sulphur or sulphur by-product cement processed.
Industrial waste gypsum in the technique scheme be discharge in the utilizing waste gypsum slag mud of phosphogypsum, desulfurated plaster, fluorgypsum, lemon gypsum, titanium white production discharging or the industrial production take calcium sulfate as main waste residue.
Carbonaceous reducing material in the technique scheme refers to coal, coke, petroleum slag or pitch.
The ratio of the weight part consumption of the industrial waste gypsum in the technique scheme and carbonaceous reducing material according to industrial waste gypsum and concrete technology different with carbonaceous material dispose difference and differ greatly, the ratio of general material consumption weight part is industrial waste gypsum: carbonaceous material=30～80: 70～20; If can allocate in right amount certain material components such as sal into when requiring sulphur processed and by-product cement, such as clay, shale, coal ash or industrial residue.
But the industrial waste gypsum in the technique scheme and carbonaceous reducing material bulk cargo are directly used or are used behind pre-treatment or mixing moulding.
Can adopt one or more levels reduction sulphur technique processed in the technique scheme, tail gas can adopt one or more levels reduction and catalytic reduction, purification, and waste residue is for building materials or direct cement processed.
The temperature of reaction of the main reaction stove in the technique scheme is controlled at 900 ℃～1450 ℃.
One or more levels reduction sulphur technique processed in the technique scheme is: one-level reduction sulphur technique processed refers to that waste gypsum and carbonaceous reducing material carry out thermal reduction reaction sulphur technique processed in a Reaktionsofen; Multilevel reduction sulphur technique processed refers to that waste gypsum is decomposed into SO first in the reduction decomposition stove
2Gas, SO
2Send into again the carbonaceous reduction furnace and carry out thermal reduction reaction sulphur technique processed; Tail gas adopts one-level catalytic reduction, purification to refer to contain sulfide such as H
2S, COS, CS
2Deng tail gas send in the catalytic converter, under katalysis, sulfide etc. is reduced to sulphur, tail gas is again through complete emission abatement; Tail gas adopts multistage catalytic reduction, purification to refer to the tail gas that contains sulfide is sent into catalytic reduction in the one-level catalytic converter, send into through one-level catalytic converter tail gas out again and to carry out catalytic reduction in the next stage catalytic converter, residual exhaust is again through complete emission abatement; Catalytic reduction refers to adopt C
UO-Al
2O
3, LaCoCO
3, C
UO-Al
2O
3-Fe
2O
3, FeS-Fe
2O
3H
2The catalyzer such as O, natural bauxitic clay, activated alumina, silica gel, activated carbon, rhombohedral iron ore, iron-activated alumina touch coal as catalyzed conversion.
In the technique scheme, described one-level reduction sulphur process using combined hot reduction reaction furnace processed, technique is simple, in the technique scheme, described multilevel reduction sulphur technique processed and Reaktionsofen thereof, reduction decomposition stove are prior art, in related data and practical application, be proven technique, tail gas catalyzed reduction, purification process and catalytic converter thereof, refining plant, condensing tower described above are prior art, in related data and practical application, are proven technique.
The present invention has following remarkable advantage:
1. can utilize all types of industries waste gypsum, adopt the cheap high sulphur coal reductive agent of deciding, the waste residue behind the sulphur processed can be made building materials or direct cement processed, is beneficial to and develops a circular economy.
2. simple, the reduced investment of technique is convenient to environment protection standard.
3. effectively protect and save gypsum natural resources and sulfurous iron ore, sulphur ore resources, protection of the environment, energy-saving and cost-reducing, to turn waste into wealth, Social benefit and economic benefit is remarkable.
Description of drawings:
Fig. 1: the process flow sheet that directly adopts bulk cargo for the present invention
Fig. 2: be the process flow sheet of the prefabricated charge bar of the present invention sulphur by-product cement processed grog
Fig. 3: produce the process flow sheet of sulphur by-product cement grog for adopting rotary kiln
Embodiment:
Technical requirements:
According to physical property and chemical constitution and coal industrial analysis and chemical analysis and the waste residue utilization scheme of all types of industries waste gypsum, determine concrete technique disposal and vent gas treatment scheme.
Embodiment 1:
Adopt somewhere desulfurated plaster and high-sulfur coal as raw material and fuel, desulfurated plaster is faint yellow powder, moisture content 12.1%, butt SO
3Content 44.3%, high sulphur coal Lower heat value 4875 * 4.18KJ/kg, total sulphur content 6.3%, high sulphur coal is through pulverizing.Desulfurated plaster and coal always expect that loss-rate is 30: 70.The dehydration of desulfurated plaster drying enters roasting reduction furnace with broken coal, and temperature is 900 ℃ in the stove, is rich in steam S, SO
2, CO, CO
2, N
2High-temperature gas send into the second-stage reduction stove, still make reductive agent with high sulphur coal, 1000 ℃ of reduction temperatures go out gas that the second-stage reduction stove is rich in S steam and send into condensation and collect tower, tail gas enters low-temperature catalyzed reduction furnace, again through emission abatement.
Embodiment 2:
Adopt waste gypsum and the hard coal of somewhere titanium white production discharging, waste gypsum moisture content 37%, butt SO
3Content 38.6%, hard coal calorific value 5543 * 4.18KJ/kg, total sulphur content 1.2% adopts combined vertical stove reduction process for producing sulphur by-product cement grog.First the sal raw material that replenishes and pulverized anthracite are milled to fineness 80um to tail over＜14% dry powder, dry powder and wet waste gypsum batching are mixed, be shaped to φ 12mm charge bar, the modulus control of charge bar ash is KH1.0, N2.2, P1.5; Waste gypsum is 80: 20 with the material ratio of coal.Charge bar is added vertical heater continuously from the top of combined vertical stove, the charge bar drying and dehydrating is solved by the heating system of specially putting, drying and dehydrating waste gas is through emission abatement, the charge bar of drying and dehydrating enters the high temperature reduction reaction zone of middle and lower part, thermal source is provided by the contained coal of charge bar, heat zone is 1450 ℃, waste residue is that cement clinker constantly moves down the discharge that is cooled under action of gravity, the gas that is rich in S steam is discharged the treated condensing tower that enters from the vertical heater middle and upper part, tail gas is sent into the catalytic reduction stove, again through emission abatement.
Embodiment 3:
Adopt certain citric acid waste residues-lemon gypsum, grey foreign odor flavor wet feed, water content 32.7%, butt SO
3Content 42.6% adopts hard coal to do the thermal reduction agent, and coal calorific value 4987 * 4.18KJ/kg adopts combined vertical reduction reaction furnace sulphur processed to produce simultaneously cement clinker.The grinding of first broken shale, the cinder with replenishing of coal being prepared burden becomes 80um to tail over≤12% dry powder, again dry powder is mixed homogeneous, is shaped to φ 12mm charge bar with wet lemon gypsum batching, the material loss-rate of waste gypsum and coal is 55: 45, and clinker moduli is designed to KH 0.95, h 1.80, P 2.4; Charge bar adds from built-up type stove top, by specially putting the heat supply drying and dehydrating, the charge bar of drying and dehydrating enters the high temperature reduction reaction zone of middle and lower part, thermal source is provided by the contained coal of charge bar, about 1200 ℃ of high-temperature zone, and the waste residue that forms through about 1200 ℃ moves down gradually cooling and discharges, waste residue 3 days ultimate compression strength 27.3MPa, 28 days ultimate compression strength 48.9MPa, initial set 1: 13, final set 1: 52, security is qualified, can be used as cement clinker; The gas that is rich in S steam enters condenser from the discharge of vertical heater middle and upper part, and tail gas is sent into the catalytic reduction stove, again through emission abatement.
Claims (2)
1. novel technique for producing sulfur from industrial waste gypsum, adopt the reduction of industrial waste gypsum and carbonaceous reducing material to make sulphur, one or more levels reduction of sulphur process using processed sulphur technique processed, tail gas adopts one or more levels catalytic reduction, purification, and waste residue is for building materials or direct cement processed; Described one or more levels reduction sulphur technique processed is: one-level reduction sulphur technique processed refers to: waste gypsum and carbonaceous reducing material carry out thermal reduction reaction sulphur technique processed in a Reaktionsofen; Multilevel reduction sulphur technique processed refers to that waste gypsum is decomposed into SO first in the reduction decomposition stove
2Gas, SO
2Send into again the carbonaceous reduction furnace and carry out thermal reduction reaction sulphur technique processed; Tail gas adopts one-level catalytic reduction, purification to refer to contain sulfide such as H
2S, COS, CS
2Tail gas send in the catalytic converter and under katalysis, sulfide be reduced to sulphur, tail gas is again through complete emission abatement; Tail gas adopts multistage catalytic reduction, purification to refer to the tail gas that contains sulfide is sent into catalytic reduction in the one-level catalytic converter, send into through one-level catalytic converter tail gas out again and to carry out catalytic reduction in the next stage catalytic converter, residual exhaust is again through complete emission abatement; It is characterized in that described one-level reduction sulphur process using combined hot reduction reaction furnace processed, industrial waste gypsum be discharge in the utilizing waste gypsum slag mud of phosphogypsum, desulfurated plaster, fluorgypsum, lemon gypsum, titanium white production discharging or the industrial production take the waste residue of calcium sulfate as leading; The carbonaceous reducing material refers to coal, coke, petroleum slag or pitch; The ratio of material consumption weight part is industrial waste gypsum: carbon raw material=30～80: 70～20.
2. novel technique for producing sulfur from industrial waste gypsum according to claim 1, it is characterized in that: catalytic reduction refers to adopt C
UO-Al
2O
3, LaCoCO
3, C
UO-Al
2O
3-Fe
2O
3, FeS-Fe
2O
3H
2O, natural bauxitic clay, activated alumina, silica gel, rhombohedral iron ore, iron-activated alumina catalyst touch coal as catalyzed conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103034508A CN101468792B (en) | 2007-12-28 | 2007-12-28 | Novel technique for producing sulfur from industrial waste gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103034508A CN101468792B (en) | 2007-12-28 | 2007-12-28 | Novel technique for producing sulfur from industrial waste gypsum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101468792A CN101468792A (en) | 2009-07-01 |
| CN101468792B true CN101468792B (en) | 2013-03-20 |
Family
ID=40826647
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007103034508A Expired - Fee Related CN101468792B (en) | 2007-12-28 | 2007-12-28 | Novel technique for producing sulfur from industrial waste gypsum |
Country Status (1)
| Country | Link |
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| CN (1) | CN101468792B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830442B (en) * | 2010-04-27 | 2011-07-27 | 重庆三圣特种建材股份有限公司 | Process for co-producing sulphuric acid and cement by using gypsum |
| CN102515586A (en) * | 2011-12-14 | 2012-06-27 | 湖南省安化乳酸厂 | Method for producing cement by using calcium sulphate waste with high water content for replacing gypsum |
| CN102626645B (en) * | 2012-03-27 | 2013-11-27 | 长沙理工大学 | Application of fluorgypsum in ketoxime Beckmann rearrangement |
| CN102765890B (en) * | 2012-08-03 | 2013-10-02 | 尹小林 | Method using titanium gypsum and acetylene sludge to prepare high-calcium sulphoaluminate or high-sulfur clinkers |
| CN103030984B (en) * | 2013-01-29 | 2015-01-28 | 四川省达州质量技术监督检验测试中心 | Composite asphalt modifier, composite modified asphalt and preparation method thereof |
| CN103232708B (en) * | 2013-01-29 | 2015-01-07 | 四川省达州质量技术监督检验测试中心 | Novel asphalt composite modifier, modified asphalt and preparation method of the modified asphalt |
| CN103030985B (en) * | 2013-01-29 | 2014-12-10 | 四川省达州质量技术监督检验测试中心 | Sulfur and gypsum whisker composite asphalt modifier, modified asphalt and preparation method thereof |
| CN104556756A (en) * | 2015-01-29 | 2015-04-29 | 四川省川威集团有限公司 | Cement prepared by utilizing sulphur residues and preparation method |
| CN106467293B (en) * | 2016-09-19 | 2019-02-12 | 江苏德义通环保科技有限公司 | A kind of method for producing sulphur and the system and device for producing sulphur |
| CN106630702B (en) * | 2016-09-23 | 2019-02-19 | 金正大生态工程集团股份有限公司 | A kind of method that desulfurized gypsum calcine by steps prepares sulphate aluminium cement co-producing sulfuric acid |
| CN107056102B (en) * | 2017-03-17 | 2020-01-24 | 山东卓联环保科技有限公司 | System and method for producing sulphoaluminate cement and co-producing sulfur by utilizing desulfurized gypsum and aluminum ash |
| CN109928367B (en) * | 2019-04-17 | 2021-04-27 | 昆明理工大学 | Device and method for preparing sulfur from phosphogypsum |
| CN111020175B (en) * | 2019-11-18 | 2021-01-29 | 中南大学 | Method for comprehensively recycling zinc-rich gypsum slag resources |
| CN110950309B (en) * | 2019-11-20 | 2021-05-28 | 山东大学 | Petroleum coke and gypsum calcination and carbon thermal reduction system and method |
| CN111302312B (en) * | 2020-02-28 | 2021-11-16 | 山东大学 | Process and system for resource utilization of gypsum and pyrite |
| CN114014274B (en) * | 2021-12-17 | 2024-06-14 | 娄底市涟钢振兴冶金材料有限公司 | Sulfur paste decompression vaporization extraction device and process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4503018A (en) * | 1983-02-14 | 1985-03-05 | Davy Mckee Corporation | Desulfurization of phosphogypsum |
| CN87107380A (en) * | 1986-11-06 | 1988-06-22 | 佛罗里达磷酸盐研究院 | Desulfurization of gypsum |
| CN1203833A (en) * | 1998-05-06 | 1999-01-06 | 中国科学院生态环境研究中心 | Method for reduction of desulfurized waste residue, phosphogypsum or natural gypsum |
| CN101050074A (en) * | 2006-04-04 | 2007-10-10 | 马芸仙 | Method for producing cement and vitriol from high silicon ardealite |
-
2007
- 2007-12-28 CN CN2007103034508A patent/CN101468792B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4503018A (en) * | 1983-02-14 | 1985-03-05 | Davy Mckee Corporation | Desulfurization of phosphogypsum |
| CN87107380A (en) * | 1986-11-06 | 1988-06-22 | 佛罗里达磷酸盐研究院 | Desulfurization of gypsum |
| CN1203833A (en) * | 1998-05-06 | 1999-01-06 | 中国科学院生态环境研究中心 | Method for reduction of desulfurized waste residue, phosphogypsum or natural gypsum |
| CN101050074A (en) * | 2006-04-04 | 2007-10-10 | 马芸仙 | Method for producing cement and vitriol from high silicon ardealite |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101468792A (en) | 2009-07-01 |
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