CN1621378A - Process for producing cement or cement products by metal tailings (skam) - Google Patents
Process for producing cement or cement products by metal tailings (skam) Download PDFInfo
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- CN1621378A CN1621378A CNA2003101096728A CN200310109672A CN1621378A CN 1621378 A CN1621378 A CN 1621378A CN A2003101096728 A CNA2003101096728 A CN A2003101096728A CN 200310109672 A CN200310109672 A CN 200310109672A CN 1621378 A CN1621378 A CN 1621378A
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- Prior art keywords
- cement
- skarn
- metal tailings
- mine tailing
- produced
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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
-
- 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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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention is process of cement and cement product with skarn as one kind of metal tail ore, and converts skarn into useful resource. The cement producing process includes adding skarn in 10-35 wt% and gypsum dihydrate in 3-5 wt% into cement clinker to form mixture, and the mixture is milled to 180 mesh and to form the skarn cement. The present invention replaces skarn for partial traditional cement material to solve the pollution caused by skarn while providing cement production with new material.
Description
Technical field
The present invention relates to the especially skarn mine tailing method of producing cement or cement products of a kind of metal tailings, belong to cement or cement products production technical field.
Background technology
The association parent rock in the metal that is produced when black and non-ferro metals debris are volcanic explosion (iron, copper, lead, zinc, molybdenum, tin, gold and silver etc.) ore deposit accounts for metallic ore total amount 40-99%.The mine tailing that emits after sorting, main chemical are silicon oxide, aluminum oxide, ferric oxide, calcium oxide, magnesium oxide and a spot of other composition.Fused magma is in slow process of cooling, and reaction forms the silico-aluminate xln that Chemical Composition differs.This material generally believes it is not have the active and few active waste of volcano grey matter both at home and abroad.Therefore, the metal tailings major part is not effectively utilized both at home and abroad.Ore deposits, ferrous and nonferrous metals such as copper, iron, lead, zinc, molybdenum, tin, gold and silver are the main mineral products of China, and wherein the ore body of skarn type is an important component part, and there are 29 province's municipalization skarn metallic ores in the whole nation.Through preliminary inves-tigation, about 300,000,000 tons of the mine tailing annual emissions that national all kinds of metallic ores give off after ore dressing.Owing to fail effectively to be utilized, arrived the degree that the storage capacity height is built, overflowed, surrounding enviroment have been caused severe contamination.
Mine tailing mainly contains the following aspects purposes at present: 1. mining backfill; 2. the embankment of building the road; 3. production devitrified glass; 4. produce materials for wall as aggregate; 5. when producing cement clinker as raw materials for production.Metal tailings as the active material of a kind of volcano grey matter at the application of producing aspect cement or the cement products, Shang Weiyou report.
Summary of the invention
The object of the present invention is to provide a kind of metal tailings (skarn) to produce the method for cement or cement products, make the big class of one in the metal tailings-skarn mine tailing be converted into valuable renewable resource.
Technical scheme of the present invention is achieved in that the method for this metal tailings (skarn) production cement, its feature comprises: with mine tailing according to following percent by weight umber ratio: mine tailing 10-35, dihydrate gypsum 3-5, cement clinker surplus are mixed, grinding to 180 screen residue gets final product less than 10% fineness.
The described metal tailings of method that described metal tailings (skarn) is produced cement comprises: the association parent rock of iron, copper, lead, zinc, molybdenum, tin, hundred gold and silver ore.
Elongation technology scheme of the present invention is the method for metal tailings (skarn) instead of part manufacture of cement cement products, its feature comprises: mine tailing is milled to is less than or equal to 180 order fineness powders, according to following percent by weight umber ratio: cement 10, mine tailing 5-15, sand 25-30, the middling flour surplus adds water and is mixed and made into concrete product.
Described metal tailings (skarn) is produced the method for cement products, it is characterized in that described cement products comprises pavior brick, materials for wall, precoated plate.
The present invention is applied to produce cement and part replaces the manufacture of cement cement products, can be country, enterprise's creation great economic benefit, solved China's environment one big difficult problem of polluting, for cement and cement products manufacturing enterprise provide novel material, new prescription, for traditional bargh provides new industry direction and improves resource utilization.
Embodiment
Provide different embodiment below in conjunction with the method that is applied to manufacture of cement and cement products production at the present invention, the specific embodiment of the present invention is described.
Embodiment 1: skarn copper mine tailing is produced the proportioning and the performance controlled trial (No. 1 for contrasting sample) of cement
Proportioning:
| Sequence number | Cement clinker | Mine tailing | Dihydrate gypsum | Add up to |
| ??1 | ????96 | ????4 | ????100 | |
| ??2 | ????81 | ????15 | ????4 | ????100 |
| ??3 | ????76 | ????20 | ????4 | ????100 |
| ??4 | ????66 | ????30 | ????4 | ????100 |
Test-results
| Sequence number | Consumptive use of water normal consistence | Fineness 80 μ m tail over % | Time of coagulation h:min | Mechanical strength MPa | Stability | ||||
| Initial set | Final set | Anti-folding | Resistance to compression | ||||||
| ?3d | ??28d | ?3d | ?28d | ||||||
| ??1 | ????26.25 | ????2.4 | ??2:15 | ?3:15 | ?6.8 | ??8.5 | ?34.6 | ?55.8 | Qualified |
| ??2 | ????26.50 | ????3.4 | ??1:40 | ?2:40 | ?6.5 | ??8.4 | ?31.8 | ?51.9 | Qualified |
| ??3 | ????28.00 | ????1.6 | ??1:55 | ?2:50 | ?6.2 | ??8.2 | ?28.9 | ?48.9 | Qualified |
| ??4 | ????27.00 | ????3.8 | ??2:10 | ?3:20 | ?5.4 | ??8.0 | ?26.4 | ?44.9 | Qualified |
Embodiment 2: the cement mastic test-results during mine tailing add-on 30%:
(1) Chengde copper mine tailing
| ????3d?MPa | ????28d?MPa | Tail over | Stability | Time of coagulation | |||
| Anti-folding | Resistance to compression | Anti-folding | Resistance to compression | Initial set | Final set | ||
| 4.4 | 20.3 | 7.4 | 35.5 | ??1.8 | Qualified | 2h30min | 3h53min |
(2) Anhui copper mine tailing
| The mine tailing place of production | ??3d??Mpa | ????28d??Mpa | ||
| Resistance to compression | Anti-folding | Resistance to compression | Anti-folding | |
| Tongling | ??21.2 | ??4.7 | ????40.1 | ????7.8 |
| Feng Huangshan | ??21.3 | ??4.78 | ????38.6 | ????7.6 |
(3) Xingtai iron tailings and Longyan, Fujian iron tailings
| The mine tailing place of production | ??3d?MPa | ??28d?MPa | Tail over | Stability | Time of coagulation | |||
| Resistance to compression | Anti-folding | Resistance to compression | Anti-folding | Initial set | Final set | |||
| The Xingtai | 19.9 | 4.2 | 39 | 7.8 | 4.4 | Qualified | ??2h36min | ??3h36min |
| Longyan, Fujian | 20.7 | 4.1 | 40.6 | 7.3 | 3.2 | Qualified | ??2h15min | ??3h30min |
(4) West Lake, Beijing village nonmetalliferous ore mine tailing
| ????3d?MP | ????28d?MPa | Tail over | Stability | Time of coagulation | |||
| Resistance to compression | Anti-folding | Resistance to compression | Anti-folding | Initial set | Final set | ||
| 21.2 | 5.0 | 39.8 | 7.7 | ??3.2 | Qualified | ??2h45min | ??3h43min |
Annotate: all test operative norm GB1344-1999
Above-mentioned evidence: skarn metal tailings of the present invention is not only technical feasible as the technical scheme that the active material and the cement clinker of volcano grey matter is mixed with cement, and every performance index are also significantly better than the contrast cement sample.And be equally applicable to nonmetal mine tailing.
Embodiment 3: the skarn metal tailings is used for cement products (pavior brick)
| Sequence number | Material fiting ratio (%) | 28d ultimate compression strength (MPa) | |||||
| Cement | Sand | Middling flour | Mine tailing | Auxiliary agent | Water | ||
| ????1 | ??20 | ??25 | ??55 | ??0.4 | ????25.7 | ||
| ????2 | ??10 | ??25 | ??55 | ??10 | ??0.4 | ????27 | |
| ????3 | ??10 | ??25 | ??55 | ??10 | ??1 | ??0.4 | ????32 |
Annotate: No. 1 for contrasting sample
The presentation of results of embodiment 3 skarn metal tailings of the present invention powder section replacement cement is used to prepare concrete product and also receives good result of use, and skarn metal tailings powder can replace 10-50% cement in actual applications.
Claims (4)
1, metal tailings (skarn) is produced the method for cement, and its feature comprises: with mine tailing according to following percent by weight umber ratio: mine tailing 10-35, dihydrate gypsum 3-5, cement clinker surplus are mixed, and grinding to 180 screen residue gets final product less than 10% fineness.
2, metal tailings according to claim 1 (skarn) is produced the method for cement, it is characterized in that described metal tailings comprises: the association parent rock of iron, copper, lead, zinc, molybdenum, tin, hundred gold and silver ore.
3, metal tailings (skarn) is produced the method for cement products, its feature comprises: mine tailing is worn into be less than or equal to 180 order fineness powders, according to following percent by weight umber ratio: cement 10, mine tailing 5-15, sand 25-30, the middling flour surplus adds water and is mixed and made into concrete product.
4, produce the method for cement products according to the described metal tailings of claim 3 (skarn), it is characterized in that described cement products comprises pavior brick, materials for wall, precoated plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101096728A CN1621378A (en) | 2003-11-24 | 2003-11-24 | Process for producing cement or cement products by metal tailings (skam) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101096728A CN1621378A (en) | 2003-11-24 | 2003-11-24 | Process for producing cement or cement products by metal tailings (skam) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1621378A true CN1621378A (en) | 2005-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101096728A Pending CN1621378A (en) | 2003-11-24 | 2003-11-24 | Process for producing cement or cement products by metal tailings (skam) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1621378A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515581A (en) * | 2012-01-06 | 2012-06-27 | 安徽乌江水泥有限公司 | Method for preparing ordinary portland cement by taking gold mine tailings as raw materials |
-
2003
- 2003-11-24 CN CNA2003101096728A patent/CN1621378A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515581A (en) * | 2012-01-06 | 2012-06-27 | 安徽乌江水泥有限公司 | Method for preparing ordinary portland cement by taking gold mine tailings as raw materials |
| CN102515581B (en) * | 2012-01-06 | 2013-07-10 | 安徽乌江水泥有限公司 | Method for preparing ordinary portland cement by taking gold mine tailings as raw materials |
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