CN105271847A - Method for preparing cement clinker form lead-zinc ore and manganese ore flotation tailing as raw material - Google Patents
Method for preparing cement clinker form lead-zinc ore and manganese ore flotation tailing as raw material Download PDFInfo
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- CN105271847A CN105271847A CN201510599023.3A CN201510599023A CN105271847A CN 105271847 A CN105271847 A CN 105271847A CN 201510599023 A CN201510599023 A CN 201510599023A CN 105271847 A CN105271847 A CN 105271847A
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- raw material
- tailings
- ore
- manganese
- clinker
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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
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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
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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Abstract
The present invention discloses a method for preparing cement clinker form lead-zinc ore and manganese ore flotation tailing as a raw material, wherein the lead-zinc flotation tailing accounts for 78 to 82%, the manganese ore flotation tailing accounts for 16 to 20%, sulfuric acid residue or iron ore mining debris accounts for 0 to 2%, the raw material comprises the following major oxides: 40%-42%of CaO, 10-14% of SiO2, 2-4% of Al2O3, and 2-3% of Fe2O3, the clinker is obtained by grinding , drying and calcining the raw material, the clinker comprises the following mineral components: 54 to 62% of tricalcium silicate, 15 to 20% of dicalcium silicate, 6 to 10% of tricalcium aluminate, 9-15% of tetra calcium aluminoferrite and less than 1.5% of free calcium oxide, the clinker comprises the following major oxides: 62%-65% of CaO, 20-22% of SiO2, 4-6% of Al2O3, and 2-4% of Fe2O3, and the clinker is the cement clinker; the lead and zinc tailings and the manganese ore tailings are used as the main raw material for cement production, comprehensive utilization of the resources can be realized, no residue warehouse production of lead and zinc and manganese ore selection can be realized, and the method is environmentally friendly, energy-saving, and resource-recycling, and has good economic value.
Description
Technical field
The present invention relates to a kind of preparation method of Portland clinker, especially a kind of with Pb-Zn deposits and manganese ore flotation tailings for the method for cement clinker prepared by raw material.
Background technology
Cement clinker for main raw material, is mixed with raw material by suitable proportion with Wingdale and clay, ferriferous raw material, burns to part or all of melting, and the work in-process obtained through cooling.In Cement industry, the most frequently used Portland clinker main chemical compositions is calcium oxide, silicon-dioxide and a small amount of aluminum oxide and ferric oxide.Essential mineral consists of tricalcium silicate, Dicalcium Phosphate (Feed Grade), tricalcium aluminate and tetracalcium aluminoferrite.Portland clinker add proper amount of gypsum jointly levigate after, silicate cement.
The lead zine ores stone of current domestic exploitation, its lead, zinc resultant are generally about ~ 2.0%, plumbous zinc grade is improved by floatation process, the discharge quantity of flotation tailings is quite huge, its quantity discharged is equivalent to 98% of raw ore total mass, tailings mainly adopts slag storehouse to deposit, and is used for the mineralizer that cement clinker is produced on a small quantity.The existence in slag storehouse occupies a large amount of ground resources, and there are " dam break of slag storehouse " major safety risks, and harmful leachable causes fatal pollution to water source, soil, and have a strong impact on the healthy of slag storehouse nearby residents, blood lead event thing has generation.Lead-zinc ore floating tailings is mainly containing CaO, SiO
2, Fe
2o
3, Al
2o
3, MgO (wherein CaO content 50 ~ 52%), fundamental component is similar to the calcium carbonate starting material (requiring CaO content>=48%) in manufacture of cement, it contains the trace elements such as Cu, Pb, Zn, Cr, Cd simultaneously, is also a kind of well mineralizer.Lead-zinc ore floating slag is very wide in China's distribution, particularly at present except minute quantity is as except mineralizer (volume < 3%) use, is not yet widely used in manufacture of cement, mainly stores flotation dreg with " tailings storehouse " location mode.In the whole nation, each Pb-Zn ore district is seen everywhere this location mode, contaminate environment while a large amount of waste soil, and there is safety, ecological risk that slag storehouse dam break etc. is potential, be something that governments at all levels very have a headache simultaneously.Manganese ore flotation dreg is in the main exploiting field of manganese ore, all store up as refuse at present, Hunan, Guizhou Province, Yu San economize the title that intersection have China's manganese ore " manganese triangle ", exploit through many decades, this area has the manganese carbonate ore resource closely exhaustion that industrial production is worth, and the raw material supply of numerous electrolytic manganese production enterprise is at full stretch.The low-grade tailings that manganese ore mine abandons nearly ten million ton, this not only occupies large-area mountain region, and causes serious ecological environmental pollution through rainwater shower formation black sewage to the surrounding enviroment that it stacks point.And while resource scarcity and mine tailing abandon, this area still has 6,000 ten thousand tons of low poor manganese ores (grade 5% ~ 14%) to unmind.Manganese mine tailings major ingredient is containing CaO, SiO
2, Fe
2o
3, Al
2o
3, MgO (wherein SiO
2content>=55.0%, Al
2o
3content ~ 12.0%), fundamental component is similar to or close to siliceous material (silica modulus 2.7 ~ 3.5, aluminium-oxygen modulus 1.5 ~ 3.5, the Al in manufacture of cement
2o
3content≤20%, Fe
2o
3content≤10%).How utilizing Pb-Zn deposits and manganese ore flotation tailings to prepare cement clinker for raw material is problem to be solved by this invention.
Summary of the invention
For the problems referred to above, the invention provides a kind of with Pb-Zn deposits and manganese ore flotation tailings for the method for cement clinker prepared by raw material, the method is by design raw meal proportioning scheme, grog can be burnt till smoothly in new type nonaqueous cement rotary kiln, lead-zinc ore floating tailings can be utilized in a large number, manganese ore flotation tailings, become Pb-Zn deposits, manganese ore flotation is that " without slag storehouse " produces, by plumbous zinc tailings, manganese mine tailings carries out the comprehensive utilization of resource as the main raw material(s) of manufacture of cement, be conducive to plumbous zinc selecting and purchasing industry, the Sustainable development of manganese ore selecting and purchasing industry and Cement industry, plumbous zinc can be realized, manganese ore selecting and purchasing " without slag storehouse " is produced, both environmental protection and energy saving, resource reutilization again.
A kind of method preparing cement clinker for raw material with Pb-Zn deposits and manganese ore flotation tailings of the present invention has been come as follows:
Step one: by lead-zinc ore floating tailings, manganese ore flotation tailings water content 10 ~ 20% after press filtration, through oven dry, break process, is reduced to less than 2% by moisture content;
Step 2: it is raw material that chip of Pb-Zn deposits tailings, manganese mine tailings and the sulfate slag after processing through step one or iron ore being dug up mine carries out proportioning by mass percentage, wherein lead-zinc ore floating tailings 78 ~ 82%, manganese mine tailings 16 ~ 20%, sulfate slag or iron ore mining chip 0 ~ 2%, wherein in raw material, each main oxides content is: CaO40% ~ 42%, SiO
210 ~ 14%, Al
2o
32 ~ 4%, Fe
2o
32 ~ 3%;
Step 3: selected by the raw material obtained through step 2 process wind to sweep ball milling and carry out grinding, utilize kiln tail gas to dry while grinding, final whole water content≤1.0% of green powder;
Step 4: the green powder obtained through step 3 adopted new type nonaqueous cement calcined by rotary kiln technology to calcine, clinker mineral after calcining consists of tricalcium silicate 54 ~ 62%, Dicalcium Phosphate (Feed Grade) 15 ~ 20%, tricalcium aluminate 6 ~ 10%, tetracalcium aluminoferrite 9 ~ 15%, free calcium oxide are less than 1.5%, and wherein in grog, main oxides content is CaO62% ~ 65%, SiO
220 ~ 22%, Al
2o
34 ~ 6%, Fe
2o
32 ~ 4%, grog three ratio is KH (0.890 ~ 0.920), SM (2.40 ~ 2.70), IM (1.40 ~ 1.60);
The grog obtained through step 4 process is cement clinker.
Beneficial effect of the present invention is: 1, full tailings batching, the plumbous zinc flotation dreg used in invention is very wide in China's distribution, particularly at present except minute quantity is as except mineralizer (volume < 3%) use, not yet be widely used in manufacture of cement, mainly store flotation dreg with " tailings storehouse " location mode.In the whole nation, each Pb-Zn ore district is seen everywhere this location mode, contaminate environment while a large amount of waste soil, there is the safety that slag storehouse dam break etc. is potential simultaneously, ecological risk, simultaneously, the manganese ore flotation dreg used in invention is in the main exploiting field of manganese ore, all store up as refuse at present, by plumbous zinc tailings, manganese mine tailings is as the main raw material(s) (in raw material, two kinds of tailings add up to proportioning >=98%) of manufacture of cement, carry out the comprehensive utilization of resource, be conducive to plumbous zinc selecting and purchasing industry, the Sustainable development of manganese ore selecting and purchasing industry and Cement industry, plumbous zinc can be realized, manganese ore selecting and purchasing " without slag storehouse " is produced, there is great social safety, environment benefits and economic gains.2, utilize resources synthetically, reduction enterprise production cost, plumbous zinc tailings is containing trace elements such as Cu, Pb, Zn, Cr, Cd, effectively can reduce the temperature that liquid phase produces, promote the formation of tricalcium silicate, sinter leaching temperature reduces by 100 ~ 120 DEG C, coal consumption can be saved greatly, improve the yield and quality of grog; In addition because plumbous zinc flotation tailings, manganese ore flotation tailings all grind through grinding machine in ore dressing process, produce cement slurry with these two kinds of slags as main raw material(s), significantly will reduce the investment of milling equipment and the grinding pow consumption in producing; As set up cement mill in plumbous zinc, manganese ore selecting and purchasing district, realizing plumbous zinc, manganese, cement recycling economy, more can save the purchasing of raw materials in cement mill, mining and trucking costs, also can eliminate simultaneously and select the expense of factory in the improvement of slag storehouse, overall economic efficiency is quite remarkable.3, Easy dosing, three component batchings can meet the production requirement of cement clinker.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is described in further details.At this, exemplary embodiment of the present invention and illustrating for explaining the present invention, but not as a limitation of the invention.
A kind of method preparing cement clinker for raw material with Pb-Zn deposits and manganese ore flotation tailings of the present invention has been come as follows:
Step one: by lead-zinc ore floating tailings, manganese ore flotation tailings water content 10 ~ 20% after press filtration, through oven dry, break process, is reduced to less than 2% by moisture content;
Step 2: it is raw material that chip of Pb-Zn deposits tailings, manganese mine tailings and the sulfate slag after processing through step one or iron ore being dug up mine carries out proportioning by mass percentage, wherein lead-zinc ore floating tailings 78 ~ 82%, manganese mine tailings 16 ~ 20%, sulfate slag or iron ore mining chip 0 ~ 2%, wherein in raw material, each main oxides content is: CaO40% ~ 42%, SiO
210 ~ 14%, Al
2o
32 ~ 4%, Fe
2o
32 ~ 3%;
Step 3: selected by the raw material obtained through step 2 process wind to sweep ball milling and carry out grinding, utilize kiln tail gas to dry while grinding, final whole water content≤1.0% of green powder;
Step 4: the green powder obtained through step 3 adopted new type nonaqueous cement calcined by rotary kiln technology to calcine, clinker mineral after calcining consists of tricalcium silicate 54 ~ 62%, Dicalcium Phosphate (Feed Grade) 15 ~ 20%, tricalcium aluminate 6 ~ 10%, tetracalcium aluminoferrite 9 ~ 15%, free calcium oxide are less than 1.5%, and wherein in grog, main oxides content is CaO62% ~ 65%, SiO
220 ~ 22%, Al
2o
34 ~ 6%, Fe
2o
32 ~ 4%, grog three ratio is KH (0.890 ~ 0.920), SM (2.40 ~ 2.70), IM (1.40 ~ 1.60);
The grog obtained through step 4 process is cement clinker.
Embodiment:
(1) plumbous zinc flotation tailings 300Kg, manganese ore flotation tailings 100Kg, sulfate slag 10Kg, coal 30Kg are dried, after oven dry, obtain plumbous cadmia 234Kg, manganese slag 74.2Kg, sulfate slag 8.7Kg, coal 29.3Kg;
(2) divide and take the plumbous cadmia 3.64Kg after oven dry, manganese slag 0.63Kg with electronic weighbridge (range 50Kg) 40 times, sulfate slag 150g, coal 580g is taken with electronic balance (range 200g), namely in plumbous cadmia: manganese slag: sulfate slag: the ratio batching of coal=72.8%:12.6%:3.0%:11.6%, the heavy 5Kg of each sample, altogether obtained 200Kg admixtion;
(3) 40 batch sample will claimed, use the test mill grinding 3 minutes of ￠ 500 × 500 successively, altogether obtained raw meal powder 198Kg, and 0.080mm tails over 4.65%;
(4) raw meal powder is fully stirred;
(5) with self-control pan-pelletizer balling-up, control moisture content≤14.5%, obtained ￠ 5-8mm raw material ball 210kg, detects actual water content 15.4% altogether, and leaking in globulation that material and waste material of trying to get to the heart of a matter abandon need not;
(6) by raw material ball seasoning 24 hours;
(7) elevated temperature test shaft kiln, starts evenly reinforced, progressively heats up when thermopair displays temperature reaches 400 DEG C, after raw material to be added fire blue flame, feed in raw material by the feeding quantity of each 3.25Kg, interval adds once in 15 minutes, the total feeding quantity ~ 16Kg of a stove again;
(8) raw material all burnt to be added, continues air blast cooling, stops gas blower during surperficial clinker temperature≤40 DEG C, artificial feeding (upper surface is insufficient burnt, and grog is rejected), obtained grog 9.8Kg;
(9) repeat above-mentioned (7), (8) item work, burn 12 times altogether, obtained grog 117.5Kg;
(10) chamotte crushing is stirred, there is storage vat and treat follow-up test;
(11) with the test mill sample preparation product cement of ￠ 500 × 500,4 times (proportioning is grog 4.8Kg to nominal sample, gypsum 0.2kg), each grinding 28 minutes, first time washes mill cement and abandons, 2nd, 3,4 obtained cement 14.6Kg altogether, stirring that rear detection 0.080mm tails over is 0.95%, specific surface area 355m
2/ Kg;
(12) clinker strength is detected by GB/T17671-1999 Test method for strength of hydraulic cement mortar;
(13) Zn, Pb, Mn (%) of grog solubility, stationary state after testing, meet GB5085.3-2007 set quota, show the grog nontoxicity that this formula is produced.
According to announcement and the instruction of above-described embodiment; further detailed description has been carried out to object of the present invention, technical scheme and beneficial effect; be understood that; the above is the specific embodiment of the present invention, the protection domain be not intended to limit the present invention, within the spirit and principles in the present invention all; any amendment of making; equivalent replacement, improves, is all included in protection scope of the present invention.In addition, although employ some specific terms in this specification sheets, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (1)
1. the method preparing cement clinker for raw material with Pb-Zn deposits and manganese ore flotation tailings has been come as follows:
Step one: by lead-zinc ore floating tailings, manganese ore flotation tailings water content 10 ~ 20% after press filtration, through oven dry, break process, is reduced to less than 2% by moisture content;
Step 2: it is raw material that chip of Pb-Zn deposits tailings, manganese mine tailings and the sulfate slag after processing through step one or iron ore being dug up mine carries out proportioning by mass percentage, wherein lead-zinc ore floating tailings 78 ~ 82%, manganese mine tailings 16 ~ 20%, sulfate slag or iron ore mining chip 0 ~ 2%, wherein in raw material, each main oxides content is: CaO40% ~ 42%, SiO
210 ~ 14%, Al
2o
32 ~ 4%, Fe
2o
32 ~ 3%;
Step 3: selected by the raw material obtained through step 2 process wind to sweep ball milling and carry out grinding, utilize kiln tail gas to dry while grinding, final whole water content≤1.0% of green powder;
Step 4: the green powder obtained through step 3 adopted new type nonaqueous cement calcined by rotary kiln technology to calcine, clinker mineral after calcining consists of tricalcium silicate 54 ~ 62%, Dicalcium Phosphate (Feed Grade) 15 ~ 20%, tricalcium aluminate 6 ~ 10%, tetracalcium aluminoferrite 9 ~ 15%, free calcium oxide are less than 1.5%, and wherein in grog, main oxides content is CaO62% ~ 65%, SiO
220 ~ 22%, Al
2o
34 ~ 6%, Fe
2o
32 ~ 4%, grog three ratio is KH (0.890 ~ 0.920), SM (2.40 ~ 2.70), IM (1.40 ~ 1.60);
The grog obtained through step 4 process is cement clinker.
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|---|---|---|---|
| CN201510599023.3A CN105271847A (en) | 2015-09-18 | 2015-09-18 | Method for preparing cement clinker form lead-zinc ore and manganese ore flotation tailing as raw material |
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|---|---|---|---|
| CN201510599023.3A CN105271847A (en) | 2015-09-18 | 2015-09-18 | Method for preparing cement clinker form lead-zinc ore and manganese ore flotation tailing as raw material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106187306A (en) * | 2016-07-25 | 2016-12-07 | 广西云吉环保科技有限公司 | A kind of processing method of manganese mine tailings resource |
| CN109092565A (en) * | 2018-07-06 | 2018-12-28 | 中国中金科技股份有限公司 | A kind of ore-dressing technique recycling manganese from Pb-Zn tailings |
| CN110451824A (en) * | 2019-09-03 | 2019-11-15 | 中南大学 | A kind of method that ore floatation tailings prepares Portland clinker |
| CN110577374A (en) * | 2019-09-28 | 2019-12-17 | 贵州德隆水泥有限公司 | Cement production method using lead-zinc slag and fluorite ore dressing tailings as raw materials |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106187306A (en) * | 2016-07-25 | 2016-12-07 | 广西云吉环保科技有限公司 | A kind of processing method of manganese mine tailings resource |
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| CN110451824A (en) * | 2019-09-03 | 2019-11-15 | 中南大学 | A kind of method that ore floatation tailings prepares Portland clinker |
| CN110577374A (en) * | 2019-09-28 | 2019-12-17 | 贵州德隆水泥有限公司 | Cement production method using lead-zinc slag and fluorite ore dressing tailings as raw materials |
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Application publication date: 20160127 |