CN102241486A - Cement mortar fast grinding method - Google Patents
Cement mortar fast grinding method Download PDFInfo
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- CN102241486A CN102241486A CN2011100763413A CN201110076341A CN102241486A CN 102241486 A CN102241486 A CN 102241486A CN 2011100763413 A CN2011100763413 A CN 2011100763413A CN 201110076341 A CN201110076341 A CN 201110076341A CN 102241486 A CN102241486 A CN 102241486A
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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
The invention discloses a cement mortar fast grinding method comprising the following steps that: first, mixed materials of cement clinker and gypsum are processed through pre-crushing and dry rough grinding, such that a crude powder is obtained; second, the crude powder is processed through wet fast fine grinding, such that the cement mortar is prepared. Preferably a vertical or horizontal mixing grinder with an appropriate volume is adopted in the fine grinding process. Water is added to the crude powder obtained from the first step, such that slurry with a certain solid content is prepared. Through fast mixing grinding, cement mortar with a fineness which accords with a cement standard is obtained. The cement mortar is pumped into a measuring tank for preparing commercial grade concrete or other cement products. According to the cement mortar fast grinding method, two steps, which are dry method crude powder producing and wet method fast mortar grinding, are carried out upon raw materials. Compared to a traditional one-step dry grinding method, the efficiency is greatly improved, and a roundness of the product is higher. With the wet grinding method, the particle size of the obtained product is small, and respective grinding of the materials can be easily realized. The respectively grinded materials can be used for producing cement. A theoretical blending requirement of small clinker particles and large cement particles can be satisfied. With the wet grinding technology, performance of cement clinker can be fully presented, and resource can be saved. During production and application processes, no airborne dust is generated, such that clean production is realized.
Description
Technical field
The present invention relates to a kind of Ginding process of grout, especially a kind of suit in the bigger factory of cement consumptions such as commerical ready-mixed concrete stirring station, cement pipe pile factory or near the quick Ginding process of grout of " existing mill existing with ", belong to the grout technical field of producing.
Background technology
Present traditional finished cement grinding technics: because cement is a kind of hydraulic cementing materials, meet water generation hydration reaction, solidify gradually, to final set, intensity improves gradually through initial set.So cement all adopts the dry method grinding process up to now.Main method is following two kinds: 1, material is through all kinds of crusher in crushing, and directly inlet pipe formula ball mill ball milling is to qualified fineness.Grinding machine generally has corase grind storehouse, fine grinding storehouse, and different big small balls are selected in two storehouses for use, generally about Φ 20～100mm.During ball milling, add the paucidisperse agent and imitate to improve mill.Dry ball milling has the branch of open circuit mill, closed circuit mill, and closed circuit mill is to increase powder separating machine behind the ball mill, and salable product are selected, and defective meal is sent back to ball mill and returned mill, can improve output and ball milling quality like this, is difficult for producing overground.2, extruding combination grinding technology.Promptly add the roll-in mill before the pipe mill or column mill carries out pre-grinding, make the inner tiny crack that produces of material, improve the material grindability, the tube mill production capacity is improved.Other technologies such as roll-in mill adds powder separating machine, vertical roller grinder and contains powder separating machine pulverizing cement etc. and use also few.Cement all is to dry grind into powder in a word, mixes with sand, stone during use to add water again and stir.
The conventional dry ball-milling technology, equipment volume is huge, and the place takies greatly, and complexity is installed, the maintenance trouble, the cost height, investment is big.In cement production simultaneously and the use, airborne dust is arranged unavoidably, contaminate environment impairs one's health; Existing dry method grinding process, mill efficiency is low, the unit consumption of energy height, simultaneously, the cement granules grating after the grinding is wide, and the effective size of grain ratio is low, fails all to bring into play the grog performance, reduces the quality of cement, the waste resource.
Summary of the invention
Technical problem at above-mentioned present situation and existence the objective of the invention is: proposed a kind of suit in the big factory of cement consumptions such as commerical ready-mixed concrete stirring station, cement pipe pile factory or near the quick Ginding process of grout of " existing mill existing with ".
Technical solution of the present invention is achieved in that a kind of quick Ginding process of grout, comprises following two steps:
One, dry method system meal; Be about to cement clinker and grind, select meal through precrushing, dry method: major equipment can be selected existing cement dry grinding equipment for use.
Two, the fast defibrination of wet method; Be about to the meal that above-mentioned dry grinding makes and add the water certain solid content slurry of preparation earlier, or add grinding machine simultaneously with water; Grinding machine adopts the vertical or horizontal stirring mill of appropriate volume, or unit or multimachine series connection and adapted wet sieving system, it is finely ground to the grout that meets national cement standard fineness requirement, pump into gauging tank, allocate truck mixer in proportion into, or be used to produce other cement products.
Because the utilization of technique scheme, the present invention compares with existing technology has following advantage:
1, the quick Ginding process of grout of the present invention utilizes cement characteristics, promptly cement meet water generation hydration reaction but initial set also for some time, most of at 2～3 hours, and can adjust; The inventive method is at the quick wet-milling cement slurry of concrete mixing plant, a flow process: add water from meal and allocate truck mixer into and approximately only need 15 minutes to wearing into slurry, continuous production now grinds existing usefulness, still can have the enough time can not solidify; Having overcome in the prior art finished cement can only be with the technology prejudice of dry method grinding process.
2, the wet method mill pearl major part that stirs grinding-in cover fast is of a size of Φ 2-5mm, and the surface area ratio tradition dry grinding of mill pearl increases by tens times with the surface-area of the big steel ball of Φ 20-100mm, heightens with the material touch opportunity.Grind the pearl movement velocity simultaneously and significantly improve, mill pearl movement velocity is about 10m/s, and far above conventional dry ball milling at a slow speed, the dry method linear velocity of ball milling at a slow speed is below the 2m/s, so its mill efficiency significantly rises.And during most of material wet-milling because water as medium is arranged, slabbing action is arranged, than dry grinding efficient height, cement granules is also like this.
3, cement clinker generally acknowledges that to be finely ground to 3～32 mu m range endoparticles The more the better, and this is best granulometric range, and is too carefully too slightly all unfavorable.Also be that particle size distribution range is narrower for well.In the big production of other industry, wet-milling is narrower than the diameter of particle distribution that dry ball milling technology makes fast, so can make the higher grog particle of best granule content.The realization theory ore deposit needs " the narrow grating of grog particle ".In addition, the cement granules roundness that wet method grinds is good, has MSDS open fire mud particle roundness good more, and intensity is high more, can give full play to the grog performance.Extra-fine grinding technical development both at home and abroad in recent years is very fast, the quick wet-grinding technology and relative device of most of employing, and not only efficient height, and superior product quality, shortcoming is to need drying after the wet-milling, has increased drying cost.Dry ball milling is then opposite, does not need drying, has saved drying cost, but product quality is low relatively.And can directly use after the cement wet-milling slurrying, drying-free can not increase cost, has improved quality again.
4, in the inventive method wet method to grind equipment volume soon little, the place takies little, installs easily, maintenance is simple, invests low.So can be arranged on as in the big factory of cement consumptions such as concrete mixing plant or near.And select different big laboratory mills for use according to material grindability difference, realize the difference wet-milling of different material easily.Different material control different fineness is prepared cement again, forms reasonable grain composition, concrete batching densification, intensity height, quality better, realization theory required " the wide grating of cement granules ".And in production and the use, significantly reduce airborne dust, protection environment and worker health can be realized cleaner production.
5, the inventive method should be set directly in the big factory of cement consumptions such as concrete mixing plant or near, reduce original grog like this and transported to the grinding station earlier, ground the secondary transportation cost of transporting to stirring station behind the cement again, reduce communications and transportation pressure, meet the low-carbon economy requirement, be a revolutionary reform of cement industry, be worth promoting.
Embodiment
Country realized civilized construction in order to guarantee construction engineering quality in recent years, and most of area has forbidden stirring at the construction field (site) the system concrete, carried out commodity and stirred concrete in advance.To the hundreds of all places, the cement annual consumption reaches several ten thousand to the hundreds of thousands of ton to single stirring station scale at hundreds of thousands of.Create condition for existing all quick wet-milling cement like this, possessed operability
Below in conjunction with specific embodiment the present invention is described.Described vertical fast quick mill can be vertical or horizontal stirring mill (also can claim ball mill, sand mill, the machine etc. of delaminating), and the linear velocity of its rod dish outer end speed is 3～25m/s; Stirring system can adopt all kinds of bar types, each disc-like type or rod dish combined type, spiral; Grinding mill barrel can be selected monotubular or many disjunctors, and the cylindrical shell shape can be used circle or Polygons; The rod dish is outside, the cylindrical shell liner can be selected polyurethane material for use, and wear resistance is fine, also can select wear-resistant metal material for use; Electrical control system adopts speed control by frequency variation then best, and not only power saving but also be easy to adjust rotating speed and adjust output is and with flux matched; Grinding medium adopts ceramic bead, steel ball or other mill pearls; Grinding machine can be emitted slurry earlier when produce to need shutting down, and the mill pearl stays still in the machine easily that water cleans, and washes out after water can survey solid content, is equipped with the part dry cement, and being used for concrete batching does not waste.
Embodiment 1
A kind of quick Ginding process of grout comprises following steps:
1, dry grinding system meal: cement clinker advances column mill through hammer crushing, and through blended material inlet pipe grinding machines such as batching and gypsum, tuber grinder can have only the corase grind storehouse, and it is better that the back adds powder separating machine, increases inlet amount than traditional technology, makes the fineness ratio surface and is 200-250m
2/ kg mixing meal.Meal can use for a plurality of users.Be fit to the processing of existing grinding station.
2, the fast grinder preface of wet method; Above-mentioned mixing meal is gone into the silos homogenizing, prepare 70% left and right sides solid content slurry during production, add the paucidisperse agent, advancing the 1000L stirring system is the vertical stirring mill of disc type, advances slurry down and goes up pulp; Mill power 168KW, linear velocity is about 10-12m/s, selecting Φ 3～4mm density for use is 3.2g/cm
3Zirconium aluminium composite ceramic beads do the mill pearl.A loading amount 1200KG detects fineness, adjusts the fresh feed pump flow according to fineness, and (internal control fineness ratio surface is 400m to grind the grout that meets national cement fineness standard
2About/kg), pump into gauging tank, be used for cement brick production.
This routine major advantage: 1, reduced cement fine grinding energy consumption.2, improve the cement quality a little through the fast mill of wet method.3, the low technology of wet-milling customer investment is the simplest.Main drawback: it is big 1, to adopt pipe to grind meal equipment, takes up an area of greatly, and output is big.Locating layout the user is difficult for.Dried wet-milling still need split two places.2, do not realize grinding respectively.
Embodiment 2
A kind of quick Ginding process of grout comprises following steps:
1, dry grinding system meal: cement clinker makes the fineness ratio surface through hammer crushing water inlet mud Vertical Mill and is 200-250m
2/ kg grog meal; With make blended material meal such as close granularity gypsum respectively with quadrat method.
2, the fast grinder preface of wet method; Above meal is prepared 70% left and right sides solid content slurry respectively, can add the paucidisperse agent, the grog meal starch into the 2000L stirring system for the rod dish in conjunction with vertical stirring mill, advance slurry down and go up pulp.Mill power 315KW, linear velocity is about 10-12m/s, selecting Φ 2.5-3.5mm density for use is 4.0g/cm
3The Zirconium silicate ceramic pearl do the mill pearl.A loading amount 2500-3000KG detects fineness, adjusts flow, and internal control fineness ratio surface is 400m
2About/kg.Pump into gauging tank; It is the vertical stirring mill of disc type that the blended material meal advances the 500L stirring system respectively, advances slurry down and goes up pulp.Mill power 110-132KW, linear velocity is about 10-12m/s, selecting Φ 2.0-3.0mm density for use is 6.0g/cm
3Yttrium zircon ceramic pearl make mill pearl, a loading amount 800KG.Grinding the internal control fineness respectively is; Wingdale: specific surface is 300m
2/ Kg; The slag specific surface is 500m
2More than/the Kg, pump into gauging tank; It is the vertical stirring mill of disc type that the gypsum meal advances the 80L stirring system, advances slurry down and goes up pulp.Mill power 35KW, linear velocity is about 10-12m/s, selecting Φ 3.0-4.0mm density for use is 2.7g/cm
3Ceramic bead do the mill pearl.A loading amount 80KG; Grinding fineness internal control specific surface is 350m
2About/kg, pump into gauging tank.Allocate truck mixer into after different slurries are mixed in proportion.
This routine major advantage: 1, reduced cement fine grinding energy consumption.2, realize the fast respectively mill of wet method, the fineness adjustment is flexible, effectively improves the cement quality.Main drawback: 1, vertical roller grinder classification dust collecting system volume is bigger, and pipeline is many, takes up an area of also not little.Power of fan is bigger, system's leakiness dirt.
Embodiment 3
A kind of quick Ginding process of grout comprises following steps:
1, dry grinding system meal: cement clinker advances that to make granularity behind roll-in mill, the scattering and grading be the following grog meal of 1500 μ m; With make blended material meal such as close granularity gypsum respectively with quadrat method, this meal output is bigger.
2, the fast grinder preface of wet method: it is the vertical agitator mill of bar type that this grog meal is advanced first 2000L stirring system, the mode of charging and Jia Shui in the employing (controlling 70% left and right sides solid content), following pulp, mill power 250KW, linear velocity is about 5-7m/s, selecting Φ 6-10mm density for use is the ceramic bead work mill pearl of 2.7g/cm3, once adorn 2000KG, grinding specific surface is 200m
2The above fineness slurry of/kg.Continuously pulp sieves, and a small amount of coarse particles advances first machine and returns mill sieve on, and the screened stock material is connected and advanced second vertical fast quick mill of 2000L again sieve on, advances to starch upward pulp mode under the employing.Mill power 315KW, linear velocity is about 10-12m/s, selecting Φ 2.5-3.5mm density for use is the Zirconium silicate ceramic pearl work mill pearl of 4.0g/cm3, a loading amount 2500-3000KG.Detect fineness, adjust flow., pump into gauging tank.Other material is used with the different volume equipment of quadrat method and is made slurry respectively.Grind and allocate truck mixer into after the slurry fineness is mixed in proportion different slurries with reference to embodiment 2..
This routine major advantage: 1, reduced cement system grinding energy consumption.2, realize the fast respectively mill of wet method, the fineness adjustment is flexible, effectively improves the cement quality.3, grind the meal efficient height that is equipped with below the 1500 μ m with roll-in.Energy consumption is low.Main drawback: 1, the investment of roll-in mill is bigger, the output height, and suitable cement consumption rich and influential family uses.2, number of devices increased after wet-milling divided two-stage tandem.
Embodiment 4
A kind of quick Ginding process of grout comprises following steps:
1, dry grinding system meal: cement clinker makes the following small-particle of 6mm through the grog fine crusher, advances column mill, closes material for following small-particle of 3mm and powder mud substantially in the grinding machine blanking.Make the blended materials such as gypsum of close granularity respectively with quadrat method.
2, the fast grinder preface of wet method:
It is spiral vertical agitator mill that this coarse fodder is advanced first 2000L stirring system, the mode of charging and Jia Shui in the employing (controlling 70% left and right sides solid content), following pulp, mill power 315KW, linear velocity is about 3～5m/s, select for use the steel ball of Φ 10～20mm to make abrading-ball, once adorn 4000KG, grinding specific surface is 200m
2The above fineness slurry of/kg.Continuously pulp sieves, and a small amount of sieve is gone up coarse particles and advanced first machine and return mill, and sieve screened stock material series connection down advances second vertical fast quick mill of 2000L again, adopts and advances upward pulp mode of slurry down.Mill power 315KW, linear velocity is about 10-12m/s, selecting Φ 2.5-3.5mm density for use is the Zirconium silicate ceramic pearl work mill pearl of 4.0g/cm3, a loading amount 2500-3000KG.Detect fineness, adjust flow, pump into gauging tank.Other material is used with the different volume equipment of quadrat method and is made slurry respectively, and fineness is with reference to embodiment 2, allocates concrete into after different slurries are mixed in proportion.
This routine major advantage: 1, reduced cement system grinding energy consumption.2, realize the fast respectively mill of wet method, the fineness adjustment is flexible, effectively improves the cement quality.3, prepare meal efficient height below the 3mm with column mill, energy consumption is low.4, omit dry classification system after the column mill discharging, change at one-level wet method corase grind back sub-sieve, wet method divides sieve apparatus little and simple accurate, extremely low, the no airborne dust of energy consumption.5, investment is low, and total system is simple, good reliability.Main drawback: number of devices increased after 1, wet-milling divided two-stage tandem.
Remarks: dry method system meal production capacity can design greatlyyer among above all embodiment, is rich in the production capacity meal and can be transported to other users and locates the wet method defibrination and use.Concrete scale is determined according to practical situation by the user.
The foregoing description only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (1)
1. the quick Ginding process of a grout comprises following two steps:
One, dry method system meal; Be about to blended material precrushing, dry method such as cement clinker, gypsum and grind, select meal, equipment is optional with the existing dry grinding equipment of cement industry, but because of only grinding meal, output is big, the efficient height;
Two, the fast defibrination of wet method; Be about to the meal that above-mentioned dry grinding makes and add the water certain solid content slurry of preparation earlier, or add grinding machine simultaneously with water; Grinding machine adopts the vertical or horizontal stirring mill of appropriate volume, but but both also multimachine series connection defibrinations of unit is finely ground to the grout that meets national cement standard fineness requirement with it, pump into gauging tank, allocate truck mixer in proportion into, or other cement products are produced.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100763413A CN102241486A (en) | 2011-03-29 | 2011-03-29 | Cement mortar fast grinding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100763413A CN102241486A (en) | 2011-03-29 | 2011-03-29 | Cement mortar fast grinding method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067941A (en) * | 1992-07-06 | 1993-01-13 | 水利水电科学研究院岩土工程研究所 | Cement wet grinching method by vibration mill |
| CN1245786A (en) * | 1999-09-10 | 2000-03-01 | 华南理工大学 | Method for making calcium metasilicate type binding material at normal temp. by using boundary limestone quarry |
| CN1257845A (en) * | 1999-12-13 | 2000-06-28 | 王育强 | Process for preparing cement by wet grinding of waste slags |
| US6241816B1 (en) * | 1997-03-26 | 2001-06-05 | Vladimir Ronin | Method of treating cement clinker |
-
2011
- 2011-03-29 CN CN2011100763413A patent/CN102241486A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067941A (en) * | 1992-07-06 | 1993-01-13 | 水利水电科学研究院岩土工程研究所 | Cement wet grinching method by vibration mill |
| US6241816B1 (en) * | 1997-03-26 | 2001-06-05 | Vladimir Ronin | Method of treating cement clinker |
| CN1245786A (en) * | 1999-09-10 | 2000-03-01 | 华南理工大学 | Method for making calcium metasilicate type binding material at normal temp. by using boundary limestone quarry |
| CN1257845A (en) * | 1999-12-13 | 2000-06-28 | 王育强 | Process for preparing cement by wet grinding of waste slags |
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Application publication date: 20111116 |