CN1051717A - A kind of method with solid sulphide dregs cement from solid sulphide dregs in burning coal - Google Patents
A kind of method with solid sulphide dregs cement from solid sulphide dregs in burning coal Download PDFInfo
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- CN1051717A CN1051717A CN89108564A CN89108564A CN1051717A CN 1051717 A CN1051717 A CN 1051717A CN 89108564 A CN89108564 A CN 89108564A CN 89108564 A CN89108564 A CN 89108564A CN 1051717 A CN1051717 A CN 1051717A
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- cement
- dregs
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- sulfur
- coal
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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
- 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
Abstract
A kind of method with solid sulphide dregs cement from solid sulphide dregs in burning coal.The technical field that belongs to the waste residue making solidification of sulfur dregs cement that utilizes the coal desulfurization generation.Technical essential of the present invention forms a certain amount of solid sulphur slag and Portland clinker combined grinding.The intensity that the cement mark of made was supported 28 days reaches 62～110% of clinker strength, and other physicals is qualified, and remarkable environmental benefit and remarkable economic efficiency are arranged.
Description
The invention belongs to the technical field of the waste residue making solidification of sulfur dregs cement that utilizes the coal desulfurization generation.
China is because coal-fired SO at present
2Annual emissions reaches 9,740,000 tons/year, is the main root that the many regional acid rains of China take place frequently.According to the long-term planning of national environment protection science and technology,, still based on coal, account for 70%, and the sulfur-bearing coal reaches more than 40% in China's energy structure to the year two thousand fifty.Therefore, administer SO in the fire coal
2Discharging be the important topic of environmental protection.
The method of coal desulfurization is a lot, mainly contains two big classes: a class is desulfurization before the burning, as separative production and separative delivery, washing etc.; Another kind of is the desulfurization of burning back, and as stack desulfurization etc., the united states, japan and other countries man adopts this method.Because above-mentioned these two kinds of methods all need to increase Special Equipment, once investment is big.General industry uses the temperature of combustion of grate furnace and coal-powder boiler all more than 1100 ℃, and under this temperature, vitriol in the coal and sulfide all will become SO
3Escape into atmosphere, contaminate environment.The circulation bed boiling furnace combustion temperature that heat energy system of Tsing-Hua University improves and promotes is 800～950 ℃, also develops a kind of novel sweetening agent.In coal, add this sweetening agent, then in combustion processes, form Undec anhydrous calciumsulphate, SO that can 80% in the coal is above
3Be fixed in the slag, thereby prevent or substantially minimize SO
3To atmospheric pollution.But owing to add sweetening agent, coal burning back bed drain purge increases more than 25%, even low-ash fat coal, bed drain purge is about 30% at least.These contain a large amount of SO
3Solid sulphur slag such as untimely processing, certainly will cause second environmental pollution again.The domestic method of non-processor still has only the Germany once to report utilization abroad and contains SO at present
33～5% boiling ashes are made the purposes such as stopping composition of masonry cement, road foundation agglutinate, bituminous material.
Purpose of the present invention is intended to administer coal desulfurization to the secondary pollution that environment causes, and turns waste into wealth.To contain a large amount of SO
3Solid sulphur slag make solidification of sulfur dregs cement, be expected to obtain remarkable environmental benefit and remarkable economic efficiency.
Major technique characteristics of the present invention are with 20～60% solid sulphur slag and 80～40% Portland clinker, as required (SO in solid sulphur slag
3When content is on the low side), also can add an amount of dihydrate gypsum, levigate jointly, can make mark and support 62～110% the qualified solidification of sulfur dregs cement that 28 days intensity is clinker strength.Because coal-fired temperature suitable (800～950 ℃), the fluidizing furnace sulphur-fixed coal ash has the activity higher than flyash.
Advantage of the present invention is to contain a large amount of SO
3Solid sulphur slag, make qualified solidification of sulfur dregs cement, not only can effect a radical cure SO in the slag
3Secondary pollution, the remarkable environmental benefit is arranged, and turns waste into wealth, be expected to obtain remarkable economic efficiency again.China produces raw coal by 500,000,000 tons, wherein have 80% as fuel, adopt sweetening agent if account for the sulfur-bearing coal of fuel 10%, then will produce the quantity of slag (by account for coal heavy 50%) reach 2,000 ten thousand tons, half making cement with wherein can increase by 1,000 ten thousand tons of cement, and can save 1,000,000 tons of dihydrate gypsums, be equivalent to increase the annual production of 10 large-scale cement factories, can obtain the economic benefit more than 1,000,000,000 yuan.
Will be further described below task proposed by the invention.
Owing to add sweetening agent, just contain a large amount of SO in the boiling furnace slag
3, thisly contain a large amount of SO
3Solid sulphur slag be that form with insoluble anhydrous calciumsulphate exists.Solidification of sulfur dregs cement of the present invention is when solid sulphur slag contains anhydrous calciumsulphate with SO
3Count at 6～10% o'clock, Gu sulphur slag and Portland clinker are by 3～4: 7～6 mixed, when solid sulphur slag contains SO
3Be 3～6% o'clock, in grog, mix 1～3% dihydrate gypsum.SO in the control cement
3Total amount meets GB GB 1344-85 requirement≤3.5%, and common grinding is to tailing over≤8% by 80 μ, and 28 days intensity of the solidification of sulfur dregs cement that makes reaches 70～99% of clinker strength.SO in solid sulphur slag
3Content is 10～20%, and solid sulphur slag with 20% and 80% Portland clinker mix grinding be to by 80 μ sieve screen over-size＜8%, and 28 days ultimate compression strength of the solidification of sulfur dregs cement that makes is higher than or is not less than clinker strength.Sieve screen over-size＜8% when solid sulphur slag extremely passes through 80 μ with the common grinding of its Portland clinker of 40～50% and 60～50%, 28 days intensity of the solidification of sulfur dregs cement that makes can reach more than 60% of clinker strength, the SO in the cement
3＞3.5% but＜6%, harmful effect does not take place.
Embodiment:
1. solid sulphur slag SO
3=7.13%.
Used cement clinker ultimate compression strength is 52.5MPa.
Gu sulphur slag: grog=30: 70,28 days ultimate compression strength is 48.9MPa, strength ratio is 0.93, SO in the cement
3=2.14%, initial set 1 hour 58 minutes, final set 4 hours 03 minute; Gu sulphur slag: grog=40: 60,28 resistance to compression sky intensity are 44.9MPa, strength ratio is 0.86, SO in the cement
3=2.85%, initial set 1 hour 58 minutes, final set 4 hours 03 minute; Gu sulphur slag: grog=50: 50,28 days ultimate compression strength is 38.7MPa, strength ratio is 0.72, SO in the cement
3=3.57%, initial set 3 hours 58 minutes, final set 6 hours 23 minutes.Above stability is all qualified.
2. SO in the solid sulphur slag
3=4.21, clinker strength is 46.5MPa, with 30% solid sulphur slag, dihydrate gypsum 2%, SO in the cement
3Total amount 2.16, strength of cement 47.0MPa, strength ratio 1.01; Gu sulphur slag 40%, dihydrate gypsum 1%, SO in the cement
3Total amount 2.16, strength of cement are 44.7Mpa, and strength ratio is 0.96.Be respectively initial set above time of coagulation 2 hours 38 minutes and 3 hours 05 minute, final set 4 hours 53 minutes and 4 hours 28 minutes, stability is qualified.
3. solid sulphur slag SO
3=4.21, clinker strength 55.2Mpa uses 30% slag, dihydrate gypsum 2%, SO in the cement
3Total amount is 2.16, strength of cement 49.9Mpa, strength ratio 0.90, initial set 2 hours, final set 4.5 hours; Gu sulphur slag 40%, dihydrate gypsum 2%, SO in the cement
3Total amount is 2.58, strength of cement 46.9Mpa, strength ratio 0.85, initial set 2 hours 17 minutes, final set 4 hours 57 minutes.Other performance is qualified.
4. solid sulphur slag SO
3=11.81%, clinker strength 46.3Mpa, Gu the ratio of sulphur slag and grog is 2: 8, strength of cement is 51.4Mpa, strength ratio 1.11, SO in the cement
3Total amount is 2.36, initial set 53 minutes, and final set 2 hours 48 minutes, stability is qualified.
5. solid sulphur slag SO
3=11.81%, clinker strength 46.3Mpa, Gu the ratio of sulphur slag and grog is 4: 6, SO in the cement
3Total amount is 4.72, and strength of cement is 43.0Mpa, strength ratio 0.93, and initial set 4 hours 29 minutes, final set 6 hours 28 minutes, stability is qualified.
6. solid sulphur slag SO
3=11.81%, clinker strength 47.1Mpa, cement SO
3Total amount 5.9%, strength of cement 36.4Mpa, strength ratio is 0.77, initial set 4 hours 19 minutes, final set 7 hours 24 minutes, stability is qualified.
Claims (3)
1, a kind of manufacture method of solidification of sulfur dregs cement is characterized in that fluidizing furnace sulphur-fixed coal ash and Portland clinker are mixed in proportion, and also can add an amount of dihydrate gypsum as required, common grinding and make solidification of sulfur dregs cement.
2, the manufacture method of solidification of sulfur dregs cement according to claim 1 is characterized in that the blending ratio of said solid sulphur slag and Portland clinker is 20～60%: 80～40%.
3, the manufacture method of solidification of sulfur dregs cement according to claim 1 is characterized in that said solid sulphur slag contains anhydrous calciumsulphate with SO
3Count 6～20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89108564A CN1051717A (en) | 1989-11-16 | 1989-11-16 | A kind of method with solid sulphide dregs cement from solid sulphide dregs in burning coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89108564A CN1051717A (en) | 1989-11-16 | 1989-11-16 | A kind of method with solid sulphide dregs cement from solid sulphide dregs in burning coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1051717A true CN1051717A (en) | 1991-05-29 |
Family
ID=4857623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89108564A Pending CN1051717A (en) | 1989-11-16 | 1989-11-16 | A kind of method with solid sulphide dregs cement from solid sulphide dregs in burning coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1051717A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997007071A1 (en) * | 1995-08-14 | 1997-02-27 | Bureau Of Administrative Service, The Chinese Academy Of Sciences | Process for producing heat and cement clinkers in one boiler, its products, the equipment used and its uses |
| CN1039638C (en) * | 1993-12-04 | 1998-09-02 | 郑伟明 | Portland cement containing sulphur-slag and its production |
| CN104402336A (en) * | 2014-10-30 | 2015-03-11 | 叶香菲 | Precast concrete slab prepared from waste concrete as aggregate |
| CN105198250A (en) * | 2015-10-20 | 2015-12-30 | 河南理工大学 | FBC (fluidized bed combustion) ash containing cement and preparation method thereof |
| CN106966619A (en) * | 2017-05-22 | 2017-07-21 | 山西大学 | A kind of fluidized bed combustion coal ash/slag cement and preparation method thereof |
| CN113831035A (en) * | 2021-09-01 | 2021-12-24 | 长江三峡技术经济发展有限公司 | Retarded cement prepared from solid sulfur ash and coal gangue and preparation method of retarded cement |
-
1989
- 1989-11-16 CN CN89108564A patent/CN1051717A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039638C (en) * | 1993-12-04 | 1998-09-02 | 郑伟明 | Portland cement containing sulphur-slag and its production |
| WO1997007071A1 (en) * | 1995-08-14 | 1997-02-27 | Bureau Of Administrative Service, The Chinese Academy Of Sciences | Process for producing heat and cement clinkers in one boiler, its products, the equipment used and its uses |
| AU713233B2 (en) * | 1995-08-14 | 1999-11-25 | Bureau Of Administrative Service, The Chinese Academy Of Sciences | Process for producing both steam power and cement clinker simultaneously in one apparatus its products, apparatus and use |
| US6468345B1 (en) | 1995-08-14 | 2002-10-22 | The Chinese Academy Of Sciences | Process for producing both steam power and cement clinker simultaneously in one apparatus its products, apparatus and use |
| CN104402336A (en) * | 2014-10-30 | 2015-03-11 | 叶香菲 | Precast concrete slab prepared from waste concrete as aggregate |
| CN105198250A (en) * | 2015-10-20 | 2015-12-30 | 河南理工大学 | FBC (fluidized bed combustion) ash containing cement and preparation method thereof |
| CN105198250B (en) * | 2015-10-20 | 2017-09-29 | 河南理工大学 | A kind of fluidized bed combustion coal ash/slag cement and preparation method thereof |
| CN106966619A (en) * | 2017-05-22 | 2017-07-21 | 山西大学 | A kind of fluidized bed combustion coal ash/slag cement and preparation method thereof |
| CN106966619B (en) * | 2017-05-22 | 2019-06-28 | 山西大学 | A kind of fluidized bed combustion coal ash/slag cement and preparation method thereof |
| CN113831035A (en) * | 2021-09-01 | 2021-12-24 | 长江三峡技术经济发展有限公司 | Retarded cement prepared from solid sulfur ash and coal gangue and preparation method of retarded cement |
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