CN1226527A - Method and apparatus for producing cement by mixing flyash from outer of mill - Google Patents
Method and apparatus for producing cement by mixing flyash from outer of mill Download PDFInfo
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- CN1226527A CN1226527A CN99101669A CN99101669A CN1226527A CN 1226527 A CN1226527 A CN 1226527A CN 99101669 A CN99101669 A CN 99101669A CN 99101669 A CN99101669 A CN 99101669A CN 1226527 A CN1226527 A CN 1226527A
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- China
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- grinding machine
- cement
- grinding
- flyash
- whipping appts
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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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
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A process for producing powdered coal ash cement features that based on the characteristics of powdered coal ash, it is directly mixed with other raw materials discharged from pulverizer without passing through the pulverizer. The mixture is separated to obtain fine powder and coarse powder. Its advantages are low load and high efficiency of pulverizer, and retaining the micro glass beads in powdered coal ash to improve the performance of cement. A powdered coal ash storage tank is designed for easy loading and unloading without flying dust.
Description
The present invention relates to a kind of Cement Production Technology, especially for the processing method and the utility appliance of producing pulverized fuel ash cement.
China is that thermal power generation is main country, about 1.2 hundred million tons of annual at present discharging flyash, and a large amount of flyash are piled up as waste residue, land occupation, contaminate environment causes public hazards.Utilize flyash as one of main raw material of producing cement, turn waste into wealth, sizable economic worth is arranged.
In existing technology, the raw material of producing pulverized fuel ash cement is to be formed by flyash, cement clinker, three kinds of mixing of materials of plaster stone.Wherein, cement clinker is to wear into fecula by Wingdale, clay, iron powder by the standard quantitative proportioning, makes granular cement clinker after calcination.In traditional cement grinding process, flyash, cement clinker, three kinds of raw materials of plaster stone enter simultaneously after proportioning and carry out grinding in the grinding machine, compound behind the grinding enters powder separating machine to be separated, the cement flour that meets fineness requirement is in time sorted out becomes finished cement, return grinding machine internal recycling grinding again to finished product than the coarse particles material, this processing method has the following disadvantages: 1. flyash itself is equally thin with cement, list is considered from fineness, reached the requirement of finished cement, as this fine powder is inserted in the grinding machine, promptly form the cushion as the sponge, thereby increased the weight of the material load in the grinding machine, reduced grinding efficiency, mill output is restricted.2. be a kind of coccoid waste residue that firepower electrical plant is discharged because of flyash, it contains improving the very useful globular glass microballon of cement performance, because of its smooth surface, frictional resistance is little between granular layer, easily slide, therefore, keep this part globular glass microballon and help improving cement flows, workability, improving cement performance and the cement concrete workability can play significant effect.If but with flyash again behind the grinding machine grinding, destroyed the spherical of glass microballon and formed the particle of many ribs shape, cause the friction between cement granules to increase, thereby influence the flowability of cement.3. the storing mode of existing cement raw material generally adopts large-scale storing vertical library.But inapplicable to the storage discharging that is used for flyash, this be because, because flyash is powdery, the one, bad accumulation, the 2nd, the dust of kicking up during discharging is big, environmental pollution causes great harm.If from the high position warehouse-in of storing vertical library, just must increase by a cover and promote handling equipment, time-consuming, and the cost height.Given this plant factor, limited the application of flyash in cement.
The objective of the invention is to avoid above-mentioned the deficiencies in the prior art and a kind of novel process and utility appliance of producing pulverized fuel ash cement is provided, by adopting the circle stream technology of the external fly ash of grinding machine, kept the part globular glass microballon in the flyash, reach the raising cement output, improve the requirement of cement performance.
Another object of the present invention is the storing mode of flyash for a change, and a kind of less investment is provided, and floor space is little, and it is convenient to store discharging, and can avoid the flyash storage tank of dust from flying.
Purpose of the present invention can reach by following measure, the existing equipment of preparation cement comprises: the storing vertical library, grinding machine, the belt weighing balance, transport tape, lift, transfer line, powder separating machine etc., in the present invention, according to new process, it is characterized in that: set up the flyash storage tank, utility appliance such as auger carrier pipe line and whipping appts, wherein, the flyash storage tank is made up of the small enclosed tank-like body more than 1, be emitted on side by side near the grinding machine afterbody, tank wall top is provided with the charging interface, and the top is provided with venting hole, and the reamer weighing balance is equipped with at the lower part outlet place, and connection auger type carrier pipe line, the other end of pipeline communicates with the transfer line of grinding machine afterbody, and whipping appts is located at the afterbody of grinding machine, is connected with the transfer line of its afterbody.Grinding machine afterbody discharge port is equipped with electronics reamer weighing balance, in the production process of pulverized fuel ash cement, according to the characteristic of flyash, adopts the circle stream production technique of the external fly ash of grinding machine, and concrete steps are:
1, grinding: three kinds of cement raw materials are entered the grinding machine grinding simultaneously change two kinds of grinding of raw materials into, that is: with cement clinker, two kinds of raw materials of plaster stone enter after the proportional quantity metering routinely the mixing raw material that carries out in the grinding machine behind grinding, the grinding with the grinding machine discharge port through electronics reamer weighing balance secondary measurement, control well behind the proportional quantity with flyash, enter whipping appts by transfer line;
2, fly ash: flyash is proportional quantity routinely, and after the electronics reamer weighing balance that is provided with through the storage tank bottom measured, the transfer line by auger carrier pipe line and grinding machine afterbody directly entered whipping appts;
3, mix stirring: three kinds of powder raw materials after the mixing and stirring, are entered the separation that powder separating machine carries out the thickness powder in whipping appts.
The present invention compared with prior art has following advantage: owing to adopted the circle stream technology of the external fly ash of grinding machine, save flyash and entered powder-grinding process in the grinding machine, not only reduced the material load in the grinding machine, also reduced the cushion in the corase grind storehouse in the grinding machine simultaneously, improved mill grinding efficiency, and can also effectively keep in the flyash improving the very useful glass microballon of cement performance, avoid the grinding phenomenon, reach the requirement that improves and improve cement performance.Improving output, has significant effect in cutting down the consumption of energy.Be specially: on former grinding process basis, make mill hourly output improve 10-25%, the pulverized fuel ash cement degree of mobilization increases by 10%, reduces cement grinding operation substep power consumption 9-21%.
Further describe the invention example below in conjunction with accompanying drawing
Fig. 1 is a technological process of production simplified schematic diagram of the present invention.
Referring to accompanying drawing, known production cement equipment comprises that storing vertical library 1,2, electronic belt weighing balance 3, transport tape 4, grinding machine 5, transfer line 6, lift 7, powder separating machine 8, transfer line 9, newly-increased additional device have flyash storage tank 10, electronics reamer weighing balance 11,14, auger type carrier pipe line 12, whipping appts 13.
In the present invention, the technical process of producing pulverized fuel ash cement is: cement clinker, plaster stone is from storing vertical library 1, take out in 2, after proportional quantity is measured by electronic belt scale routinely, enter the combined grinding that carries out 2 kinds of raw materials in the grinding machine 5 by transport tape 4, after the compound discharging behind the grinding, carry out secondary measurement by the aft mounted electronics reamer of grinding machine weighing balance 14 again, control well and enter in the whipping appts 13 behind the proportional quantity with flyash, meanwhile, flyash by in the storage tank 10 after electronics reamer weighing balance 11 metering proportion amounts, enter in the whipping appts 13 by auger carrier pipe line 12 and transfer line 6, three kinds of raw materials are under the effect of whipping appts, after mixing, the hopper 7a that enters on the lift 7 by known manner carries out the separation of thickness powder to the powder separating machine 8, fine powder packs to finished product from powder separating machine outlet, and meal then enters in the grinding machine 5 grinding once more by transfer line 9.
In utility appliance of the present invention, flyash storage tank 10 adopts closed cylindrical body, side wall upper part is provided with charging interface 10a, the air pump mouth of pipe in the dumping device on this interface and the haul tank car matches, flyash directly can be squeezed in the jar by the air pump mouth of pipe on the haul tank car, thus the dust from flying that forms when avoiding discharging.The top of storage tank 10 is provided with venting hole 10b, electronic scale 11 is equipped with in the bottom, preferably adopt the electronics reamer of accurate measurement to claim, auger carrier pipe line 12 communicates with the transfer line 6 of grinding machine afterbody, adopt the fastening piece that is easy to dismantle to connect therebetween, transfer line 6 is connected with whipping appts 13, and the housing of whipping appts 13 can be made into closed tubular or casing shape, vane-type, tooth-like or other class formula stirring parts 13a are housed in it, and stirring parts 13a is connected with motor 13c by shaft coupling 13b.The structure of auger carrier pipe line is a known technology, no longer auspicious herein stating.
Claims (4)
1, the external fly ash of a kind of grinding machine is produced the processing method of cement: it is characterized in that: adopt the circle stream technology of the external fly ash of grinding machine, make flyash by the grinding machine grinding, and direct and other raw material mixes, concrete steps are:
1. grinding: with three kinds of cement raw materials simultaneously grindings change two kinds of grinding of raw materials into, that is: cement clinker, two kinds of raw materials of plaster stone are entered grinding in the grinding machine behind the metering proportion routinely, mixing raw material behind the grinding behind electronics reamer weighing balance secondary measurement proportional quantity, enters whipping appts by transfer line with the grinding machine discharge port;
2. fly ash: flyash is proportional quantity routinely, and after the electronics reamer weighing balance metering that is provided with through the storage tank bottom, the transfer line by auger carrier pipe line and grinding machine afterbody directly enters whipping appts;
3. mix to stir: go into powder separating machine with three kinds of powder raw materials mixing and stirring in whipping appts is laggard.
2, the external fly ash of grinding machine described in a kind of claim 1 is produced the utility appliance of cement industry method, the existing equipment of its preparation cement comprises: storing vertical library (1.2), weighing balance (3), transport tape (4), grinding machine (5), transfer line (6,9), lift (7), powder separating machine (8) etc., it is characterized in that: set up flyash storage tank (10), electronics reamer weighing balance (11,14), auger carrier pipe line (12) and whipping appts utility appliance such as (13), wherein, flyash storage tank (10) is made up of the small enclosed tank-like body more than 1, be emitted on side by side near the grinding machine afterbody, grinding machine afterbody discharge port is equipped with electronics reamer weighing balance (14), whipping appts (13) is located at the afterbody of grinding machine (5), and is connected with the transfer line (6) of its afterbody.
3, a kind of utility appliance of production cement as claimed in claim 2, it is characterized in that: the tank wall top of flyash storage tank (10) is provided with charging interface (10a), the top is provided with venting hole (10b), electronics reamer weighing balance (11) is equipped with in the tank body bottom, and connection auger type carrier pipe line (12), the other end of pipeline communicates with the transfer line (6) of grinding machine afterbody, adopts the fastening piece that is easy to dismantle to connect therebetween.
4, a kind of utility appliance as the described production cement of claim 2 worker, it is characterized in that: the housing of whipping appts (13) is closed tubular or casing shape, and an end that is provided with vane-type, tooth-like or other similar stirring parts (13a), stirring parts (13a) in it is connected with motor (13c) by shaft coupling (13b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99101669A CN1226527A (en) | 1999-02-11 | 1999-02-11 | Method and apparatus for producing cement by mixing flyash from outer of mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99101669A CN1226527A (en) | 1999-02-11 | 1999-02-11 | Method and apparatus for producing cement by mixing flyash from outer of mill |
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| Publication Number | Publication Date |
|---|---|
| CN1226527A true CN1226527A (en) | 1999-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99101669A Pending CN1226527A (en) | 1999-02-11 | 1999-02-11 | Method and apparatus for producing cement by mixing flyash from outer of mill |
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| CN (1) | CN1226527A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214198A (en) * | 2013-04-18 | 2013-07-24 | 广西鱼峰水泥股份有限公司 | Cement production method |
-
1999
- 1999-02-11 CN CN99101669A patent/CN1226527A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103214198A (en) * | 2013-04-18 | 2013-07-24 | 广西鱼峰水泥股份有限公司 | Cement production method |
| CN103214198B (en) * | 2013-04-18 | 2014-11-26 | 广西鱼峰水泥股份有限公司 | Cement production method |
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Addressee: Wei Rentao Document name: Deemed as a notice of withdrawal |