CN103706440B - A kind of compound regulate and control method of cement finish grinding vertical roller grinder - Google Patents
A kind of compound regulate and control method of cement finish grinding vertical roller grinder Download PDFInfo
- Publication number
- CN103706440B CN103706440B CN201310626046.XA CN201310626046A CN103706440B CN 103706440 B CN103706440 B CN 103706440B CN 201310626046 A CN201310626046 A CN 201310626046A CN 103706440 B CN103706440 B CN 103706440B
- Authority
- CN
- China
- Prior art keywords
- mill
- separating machine
- powder separating
- roller
- finish grinding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Crushing And Grinding (AREA)
Abstract
Invention provides a kind of compound regulate and control method of cement finish grinding vertical roller grinder, cement finish grinding vertical roller grinder comprises multiple mill rollers that body skin, mill and mill upper surface are arranged, comprising adjustment mill roller to the step of the pressure of mill, it is not a numerical value that the pressure of mill is adjusted to by adjustment mill roller by the step of the pressure of mill by multiple mill roller. The single roller shape of balance and roll-in moving to left or moving to right impact size-grade distribution can be made up, greatly improve the content of 3��32 micron fraction.
Description
Technical field
Invention relates to the equipment for cement grinding, more precisely, is the compound regulate and control method of a kind of cement finish grinding vertical roller grinder.
Background technology
Owing to aquation only occurs cement granules, just intensity there is contribution, and an independent cement granules is from outward appearance to inner essence by hydration process, progressive generation, therefore small-particle is easy to just complete aquation, early strength contribution is big, macrobead aquation obtains slowly, could play a role gradually in the later stage, and especially big particle only has top layer by aquation (because later stage moisture reduces gradually), kernel only plays skeleton function, intensity is not contributed.
A large amount of experimental datas shows:
Intensity, due to just complete aquation in whipping process, is not contributed by less than (1) 1 micron fine particle. Its content increases, and illustrates to there is powder mill, can significantly increase water requirement when building, reduces and build performance. Therefore, this component particles is harmful, should reduce as far as possible.
(2) 1��3 micron particle content height, within 3 days, intensity is just high, can increase with hourly water demand, build degradation. Therefore, this component particles, also should be low as far as possible under 3 days intensity can meet the prerequisite required. Generally to be controlled 10% once.
(3) 3��32 micron particle content, it is resolved that 28 days intensity. Owing to 1��3 micron particle content should not be too high, therefore 3��32 micron particle content should be more high more good. If it is more than needed that intensity index has by a relatively large margin, it is possible to increases blended material addition. Generally it is not less than 65%.
Intensity is had contribution by (4) 32��65 micron particle content, but contribution rate is lower.
More than (5) 65 microns particles only play skeleton function substantially.
(6) being greater than 38 micron particle content to increase, cement bleeding can increase, and should keep appropriateness.
Research shows further, and current single-material meets RRSB function substantially through the size-grade distribution of the powder body that mechanical disintegration obtains, and its equation is as follows:
W(x)=1-exp[-(x/De)N]
In formula, x represents particle diameter, and W (x) represents the particulate percentages being less than X, De and N is called characteristic diameter and homogeneity (width) coefficient. De is cumulative percentage particle diameter corresponding when being 63.4%, and numerically close with volume average particle size (D (4,3)). N is more big, and the homogeneity of particle is more good.The N value of cement is about 1. Fig. 1 is the RRSB curve of a kind of typical cement, wherein De=21.66 ��m, N=1.03, and dotted portion is differential distribution, and solid line is cumulative distribution.
RRSB distribution is a kind of idealized particle size distribution function, it is possible to determined by traditional screen analysis method. The size-grade distribution of cement can accurately be measured by modern granularity instrument, can obtain more accurate RRSB function with least square fitting. Seeing Fig. 2, " actual measurement distribution " that in figure, solid line represents is a kind of typical cement granularity distribution, and in figure, dotted line represents that " RRSB distribution " is that wherein De=21.66 ��m, N=1.03, error of fitting is 4.9% according to " actual measurement distribution " matching.
The many of cement grinding system was " roll squeezer+ball milling " in the past, and existing big multiple production line progressively adopts the whole powder of Vertical Mill to grind scheme, has the size-grade distribution of the similar RRSB function tendency of solidification due to cement vertical mill final grinding system. 3��32 microns of content parts are roughly determined after technique is established.
According to upper, once technique is determined, owing to size-grade distribution observes the RRSB function of solidification substantially, thus 0��3 ��m, 3��32 ��m are waited percentage composition substantially to remain unchanged, even if 3��32 ��m of content reach requirement, 0��3 ��m of content is also easily more than 10%.
Summary of the invention
The object of invention provides a kind of compound regulate and control method of cement finish grinding vertical roller grinder, the defect solving the solidification of size-grade distribution in prior art and can not regulate.
Invention provides a kind of compound regulate and control method of cement finish grinding vertical roller grinder, cement finish grinding vertical roller grinder comprises multiple mill rollers that body skin, mill and mill upper surface are arranged, comprising adjustment mill roller to the step of the pressure of mill, it is not a numerical value that the pressure of mill is adjusted to by adjustment mill roller by the step of the pressure of mill by multiple mill roller.
In some embodiments, cement finish grinding vertical roller grinder also comprises multiple powder separating machine, multiple powder separating machine is fixed on body skin, also comprises the step of the specification of adjustment powder separating machine, and it is not a numerical value that multiple powder separating machine is adjusted to specification by the step of the specification of adjustment powder separating machine. Dispersion powder separating machine select powder characteristic, it is possible to for need index, by regulate powder separating machine select powder characteristic, reach required object index.
In some embodiments, the step of the pressure of mill is that the diameter of multiple mill roller to be adjusted to be not a numerical value by adjustment mill roller. The shape of different mill roller can provide different size-grade distribution, obtains the size-grade distribution after composite optimization.
In some embodiments, mill roller is pressed on mill by hydraulic gear, and the step of the pressure of mill is that the output moment of hydraulic gear to be adjusted to be not a numerical value by adjustment mill roller. The output moment of adjustment hydraulic gear is also to provide the mode of different size-grade distribution, and method is simple, it is easy to implement.
In some embodiments, multiple powder separating machine is cage type rotor powder separating machine, and the step of specification of adjustment powder separating machine is that to be adjusted to by the diameter of multiple powder separating machine be not a numerical value.
The present invention can make up the single roller shape of balance and roll-in moving to left or moving to right impact size-grade distribution, greatly improves the content of 3��32 micron fraction. And can significantly reduce the energy consumption of follow-up program.
Accompanying drawing explanation
Fig. 1 is the idealized distribution curve of cement-particle size that background section is introduced, and dotted portion is differential distribution, and solid line is cumulative distribution;
Fig. 2 is a kind of typical cement-particle size actual measurement distribution that background section is introduced;
Fig. 3 is a kind of cement finish grinding vertical roller grinder granularity calibration composite effect figure when its four mill rollers have two kinds of roller shapes;
Fig. 4 be a kind of compound regulate and control method of cement finish grinding vertical roller grinder provided by the invention based on the structural representation of a kind of cement finish grinding vertical roller grinder.
Embodiment
A kind of compound regulate and control method of cement finish grinding vertical roller grinder disclosed by the invention, comprising adjustment mill roller 3 to the step of specification of the step of the pressure of mill 2 and adjustment powder separating machine, being adjusted to by the pressure of mill 2 by multiple mill roller 3 is not a numerical value and powder separating machine is adjusted to specification is not a numerical value.
The present invention based on four mill rollers 3 that cement finish grinding vertical roller grinder comprises body skin 1, mill 2 and mill 2 upper surface are arranged, body skin 1 is fixed with two powder separating machines. Mill roller 3 is pressed on the surface of mill 2 by hydraulic gear, hydraulic gear comprises Rocker arm 5, axle 6, piston rod 7; Rocker arm 5 comprises the upper arm 51 and underarm 52 that are wholely set; upper arm 51 and underarm 52 are arranged on the bottom of body skin 1 by the axle 6 between upper arm 51 and underarm 52, keeps the function that Rocker arm 5 can rotate around axle 6. Underarm 52 is connected on the piston rod 7 of oil cylinder, upper arm 51 connects mill roller 3 away from one end of underarm 52 by pressure transmission axle 8, mill roller 3 center suit pressure transmission axle 8 also keeps rotatable function, mill roller 3 is by means of the work of oil cylinder, press to mill 2 upper surface, mill 2 upper surface is tangent with the mill outer perimembranous of roller 3, and mill roller 3 is by the drive of mill 2, and the upper surface at mill 2 rotates.
Compound regulate and control method provided by the invention is controlled by following two aspects:
1, each mill roller 3 applies different pressure, changes powder granularity before selecting powder and distributes, and control diameter of particle is the content of 0��3 ��m of part. (the size-grade distribution content mentioned herein all refers to cement granules)
2, multiple powder separating machine is set, increases except other the auxiliary powder separating machines carrying powder separating machine, regulate the parameter of auxiliary powder separating machine, reach the object of increase by 0��32 ��m of content.
Be adjusted to by the pressure of mill 2 by mill roller 3 in the present invention is not that a numerical value can be realized by following two kinds of methods:
A, the output moment of oil cylinder controlling the hydraulic gear of four mill rollers 3 respectively is adjusted to mutual difference.
The diameter of b, four mill rollers 3 differs.
The size-grade distribution of a kind of cement finish grinding vertical roller grinder depends on shape and the projecting pressure of mill roller 3, when multiple mill roller 3 has different shapes or mill 2 pressure is different, can to the limitation of the size-grade distribution made up under single roller shape and roll-in after its respective intrinsic size-grade distribution compound.
Fig. 3 is the Vertical Mill granularity calibration composite effect figure of the mill roller 3 in four mill rollers 3 with two kinds of roller shapes, to be diameter be dotted line that 150cm two grinds the particle size distribution figure of roller 3 under 1200kN/ projecting pressure, the particle size distribution figure of two mill rollers 3 of chain line to be diameter be 200cm under 900kN/ projecting pressure. Bold portion is the particle size distribution figure after compound, and to grind the content of 1��3 micron fraction in the particle size distribution figure of roller 3 slightly many it may be seen that diameter is 150cm two for upper figure, diameter be two mill rollers 3 of 200cm particle size distribution figures in 65 microns slightly many with upper part content. The particle size distribution figure of solid line is formed, it is possible to make up the single roller shape of balance and the moving to left or move to right effect of roll-in size-grade distribution, greatly improve the content of 3��32 micron fraction after compound.
The differentiation control of above-mentioned mill roller 3 pressure can effectively prevent the generation of overground phenomenon, can reduce granularity at 1��3 ��m and more than 65 ��m content on the basis of suitably raising 3��32 ��m of content.
As shown in Figure 4, powder separating machine in the present invention is cage type rotor powder separating machine, comprises and is fixed on body skin 1 top and inner and have the 2nd cage type rotor powder separating machine 42 of independent air suction inlet by the first cage type rotor powder separating machine 41 of electric machine control and the horizontal body skin 1 that is fixed on.
Powder separating machine is adjusted to by the present invention specification be not a numerical value can by the diameter that adjusts the first cage type rotor powder separating machine 41 and the 2nd cage type rotor powder separating machine 42 to being not a numerical value, dispersion powder separating machine select powder characteristic.
In the air port that goes out of the 2nd cage type rotor powder separating machine 42, particle size analyzer is installed further, it is possible to by regulating the diameter of the 2nd cage type rotor powder separating machine 42, reach suitable and select powder characteristic. Generally using the 2nd cage type rotor powder separating machine 42 as auxiliary powder separating machine, and granularity Detection instrument is set in the outlet of the 2nd cage type rotor powder separating machine 42, by adjusting the parameters such as the diameter of the 2nd cage type rotor powder separating machine 42, rotating speed, wind speed, in conjunction with granularity Detection instrument, can effectively improve the elimination factor that particle diameter is 3��32 ��m of parts (especially 16��32um part). 2nd cage type rotor powder separating machine 42 is as auxiliary powder separating machine, its quantity, output can adjust accordingly according to practical situation and not limit, the diameter of general 2nd cage type rotor powder separating machine 42 is the 1/3 to 1/8 of the first cage type rotor powder separating machine 41, and output is the 1/4 to 1/20 of the first cage type rotor powder separating machine 41 etc.
The present invention can effectively improve the cement quality that existing cement finish grinding vertical roller grinder is produced, namely improve on the basis of 3��32 ��m of content, Control granularity at the content of 1��3 ��m below 10%, reduce by more than 65 ��m content, greatly improve 28 days intensity of cement, ensure the basis of cement 3 days intensity effectively controls water requiremen. Greatly improve the quality of cement in concrete is applied.
A series of detailed explanation listed above is only the concrete explanation of the feasibility embodiment for invention, and they also are not used to limit the protection domain of invention, all do not depart from the equivalent embodiment of invention or changes within the protection domain that all should be included in invention.
Claims (5)
1. the compound regulate and control method of cement finish grinding vertical roller grinder, it is characterized in that: described cement finish grinding vertical roller grinder comprises multiple mill rollers (3) that body skin (1), mill (2) and described mill (2) upper surface are arranged, described compound regulate and control method comprises adjustment mill roller (3) to the step of the pressure of mill (2), and it is not a numerical value that the pressure of mill (2) is adjusted to by described adjustment mill roller (3) by the step of the pressure of mill (2) by multiple mill roller (3);
Described cement finish grinding vertical roller grinder also comprises multiple powder separating machine, described multiple powder separating machine is fixed on described body skin (1), described compound regulate and control method also comprises the step of the specification of adjustment powder separating machine, and it is not a numerical value that multiple powder separating machine is adjusted to specification by the step of the specification of described adjustment powder separating machine.
2. a kind of compound regulate and control method of cement finish grinding vertical roller grinder according to claim 1, it is characterised in that: it is that the diameter of described multiple mill roller (3) to be adjusted to be not a numerical value to the step of the pressure of mill (2) that roller (3) is ground in described adjustment.
3. a kind of compound regulate and control method of cement finish grinding vertical roller grinder according to claim 1, it is characterized in that: described mill roller (3) is pressed on described mill (2) by hydraulic gear, the step of the pressure of mill (2) is that the output moment of described hydraulic gear to be adjusted to be not a numerical value by described adjustment mill roller (3).
4. a kind of compound regulate and control method of cement finish grinding vertical roller grinder according to claim 2, it is characterized in that: described multiple powder separating machine is cage type rotor powder separating machine, the step of the specification of described adjustment powder separating machine is that to be adjusted to by the diameter of described multiple powder separating machine be not a numerical value.
5. a kind of compound regulate and control method of cement finish grinding vertical roller grinder according to claim 4, it is characterised in that: described multiple powder separating machine comprise be fixed on body skin (1) top and by the first cage type rotor powder separating machine (41) of electric machine control with horizontal be fixed on body skin (1) inside and there is the 2nd cage type rotor powder separating machine (42) of independent air suction inlet;
The diameter of described 2nd cage type rotor powder separating machine (42) is the 1/3 to 1/8 of the first cage type rotor powder separating machine (41), and the output of described 2nd cage type rotor powder separating machine (42) is the 1/4 to 1/20 of the first cage type rotor powder separating machine (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310626046.XA CN103706440B (en) | 2013-11-28 | 2013-11-28 | A kind of compound regulate and control method of cement finish grinding vertical roller grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310626046.XA CN103706440B (en) | 2013-11-28 | 2013-11-28 | A kind of compound regulate and control method of cement finish grinding vertical roller grinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103706440A CN103706440A (en) | 2014-04-09 |
| CN103706440B true CN103706440B (en) | 2016-06-08 |
Family
ID=50399999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310626046.XA Active CN103706440B (en) | 2013-11-28 | 2013-11-28 | A kind of compound regulate and control method of cement finish grinding vertical roller grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103706440B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109092446B (en) * | 2018-08-20 | 2020-05-05 | 安徽国宏合金材料有限公司 | Vertical grinding disc applied to building engineering for manufacturing cement powder |
| CN110075974B (en) * | 2019-05-10 | 2020-09-15 | 江苏吉达机械制造有限公司 | Online milling powder concentrator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2828190B2 (en) * | 1993-07-09 | 1998-11-25 | 宇部興産株式会社 | Vertical crusher |
| CN102728445A (en) * | 2012-06-26 | 2012-10-17 | 成都利君科技有限责任公司 | Method for fine grinding of iron ore by dry method |
| CN202621230U (en) * | 2012-02-13 | 2012-12-26 | 宇部兴产机械株式会社 | Vertical grinder |
| CN102892511A (en) * | 2010-05-19 | 2013-01-23 | 三菱重工业株式会社 | Vertical mill |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0880446A (en) * | 1994-09-13 | 1996-03-26 | Ube Ind Ltd | Vertical pulverizer |
| JP2010131532A (en) * | 2008-12-05 | 2010-06-17 | Ube Machinery Corporation Ltd | Vertical grinder |
-
2013
- 2013-11-28 CN CN201310626046.XA patent/CN103706440B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2828190B2 (en) * | 1993-07-09 | 1998-11-25 | 宇部興産株式会社 | Vertical crusher |
| CN102892511A (en) * | 2010-05-19 | 2013-01-23 | 三菱重工业株式会社 | Vertical mill |
| CN202621230U (en) * | 2012-02-13 | 2012-12-26 | 宇部兴产机械株式会社 | Vertical grinder |
| CN102728445A (en) * | 2012-06-26 | 2012-10-17 | 成都利君科技有限责任公司 | Method for fine grinding of iron ore by dry method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103706440A (en) | 2014-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106427451B (en) | Farm power chassis leveling system and its leveling method | |
| CN103706440B (en) | A kind of compound regulate and control method of cement finish grinding vertical roller grinder | |
| CN103231289B (en) | Control the method for grinding of different roll surface roughness | |
| CN206286028U (en) | A kind of powder lapping device | |
| CN204656629U (en) | Low temperature mill | |
| CN110631949A (en) | Method for evaluating grinding performance of titanium dioxide primary product by sulfuric acid process | |
| CN102626822B (en) | Hollow variable-diameter porous friction head and preparation method for surface composite material of metal material | |
| EP2874750B1 (en) | Method and system for comminuting grinding stock using a roller mill | |
| CN102703745A (en) | Preparation method of extra coarse grain hard alloy | |
| CN206010745U (en) | A kind of artificial quartz in lump production burnishing device | |
| CN103721799A (en) | Determination method for filling ratio of grinding mills | |
| CN1970157A (en) | Method for controlling ball milling powder purity and granularity distribution | |
| CN104690638B (en) | A kind of Ginding process and optical fiber ceramic sleeve of optical fiber ceramic sleeve endoporus | |
| CN113289760B (en) | Application of intelligent crushing, shaping and grading system of vertical shaft type crusher for sand processing plant | |
| CN207254495U (en) | A kind of powdery paints flour mill | |
| CN108993751A (en) | A method of optimization grinding particle size | |
| CN208946507U (en) | A kind of plastic calender | |
| CN201610499U (en) | Flat plate type alignment device for steel cord stranding | |
| CN203061262U (en) | Material distributing valve | |
| CN201040259Y (en) | Adjustable vane for cement vertical mill | |
| CN204023182U (en) | A kind of Flat Membrane masking gel machine | |
| CN101417254A (en) | Wheat gradual peeling and milling method | |
| CN208181417U (en) | A kind of unmanned plane rotor cutting angle regulating mechanism | |
| CN205495815U (en) | Adjustable sorting baffle of dry -type magnet separator | |
| CN103663534A (en) | Method of processing barite powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |