CN107954622A - A kind of production method of flyash, slag composite powder - Google Patents
A kind of production method of flyash, slag composite powder Download PDFInfo
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- CN107954622A CN107954622A CN201711146005.5A CN201711146005A CN107954622A CN 107954622 A CN107954622 A CN 107954622A CN 201711146005 A CN201711146005 A CN 201711146005A CN 107954622 A CN107954622 A CN 107954622A
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- Prior art keywords
- slag
- vertical mill
- flyash
- composite powder
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Classifications
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to the production method of a kind of flyash, slag composite powder, it is characterised in that：Prepare mixed powder：Flyash and slag powders press 24:86 weight ratios enter No. 1 air conveyer flume after being mixed by respective constant feeder, then are sent into roller batch mixer and be sufficiently mixed by No. 1 air conveyer flume.The advantage of the invention is that：Present invention flyash presses 24 with slag powders:Production attack technology and the product simplification of fly-ash slag composite powder production technology are directly produced after 86 part by weight proportioning into drum mixer, the performance of slag powders is improved, reduces the economic benefit that cost improves product, reach domestic and international top standard；The yield of drum mixer exceedes designed capacity 150t/h, reaches 200t/h, the compound powder density >=2.6g/cm of fly-ash slag of output3, fluidity ratio >=95%, water content≤1.0%, activity index：7 days >=75%, 28 days >=95%, comprehensive power consumption ＜ 40kwh/t.
Description
Technical field
The present invention relates to the production method of a kind of flyash, slag composite powder.
Background technology
It is a kind of like volcanic ash mixing material that flyash is that fine coal is formed after high-temp combustion, is the power plant general of coal of burning
Coal wears into less than 100 microns of coal dust, and spraying into burner hearth with hot-air produces into suspended state, burning and be contaminated with a large amount of incombustible
High-temperature flue gas, flyash has just been obtained through dust collect plant trapping.The chemical composition of flyash is similar to clayey, main component：
Silica, alundum (Al2O3), di-iron trioxide, calcium oxide and uncombusted carbon.
The development trend of Coal Ash in China comprehensive utilization：Building material industry is the most important comprehensive utilization neck of China's flyash
Domain.In past 10 years, have benefited from national basis facility investment and the high speed development of real estate industry, the growth rate of building materials industry
More than 20% level had once been maintained at, this also provides advantage to the comprehensive utilization of China's flyash, greatly alleviates
The flyash handling problems that 10 years Thermal Power Generation Industry rapid growths are brought in the past.But as economic development entrance in China's is new normal
State, that is, switch to high speed by rapid growth and increase, in the economic downlink of National Macroscopic, effective demand is weak, export market is withered
Contracting etc. is under the action of factor, and plus structure updating, slowly etc. reason, construction industry and infrastructure build the tradition such as cement, concrete
The demand of material will further slow down, and flyash processing in China's will be faced with more acute challenge with utilizing.
Blast furnace slag water quenching smashes high-temperature liquid furnace slag cooling, is turned into loose grain slag, blast furnace granulated slag contains in 15
Chemical composition above, but mainly CaO, MgO, Al2O3、SiO2, four kinds of components account for the 95% of blast furnace slag gross weight.Blast furnace slag
Belong to silicate material, its composition is similar to natural rock and portland cement.Blast furnace granulated slag vitrifying degree can reach
90%-95%.Grain slag particle mean size is 0.2-0.3mm, grain slag is aqueous≤and 15%, there is potential hydraulic gelling property, it is ripe in cement
Under material, lime, gypsum equal excitation agent effect, it is top quality cement raw material that can show hydraulic gelling property.So domestic use
Vertical mill grinding slag powders, specific surface area >=400 ㎡/kg of slag powders.Slag micropowder can be with the water of equivalent substitution 20%-50%
Mud.Cement can be directly incorporated into or mixed in mixing concrete, its activity can be fully played.
It through retrieving pertinent literature, there is now recycling slag powders and the technology of flyash, but do not find using rolling
The formula batch mixer hybrid technique compound to slag powders and flyash, therefore, researches and develops a kind of new roller batch mixer mixed powder
The compound powder producing method of coal ash, slag is imperative.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of property index height and the flyash of product cost, ore deposit can be reduced
The production method of slag composite powder.
In order to solve the above technical problems, the technical scheme is that：A kind of producer of flyash, slag composite powder
Method, its special innovative point are：The production method includes the following steps：
(1) pre-process：The slag powders that flyash and slag are obtained through special vertical mill grinding are respectively enterd into flyash
Storehouse and slag powders storehouse；
(2) mixed powder is prepared：Flyash and slag powders press 2-4:8-6 weight ratios by respective constant feeder into
Enter No. 1 air conveyer flume after row mixing, then be sent into roller batch mixer and be sufficiently mixed by No. 1 air conveyer flume；Control
Temperature of the mixing machine pressure of roller batch mixer processed in 10-12MPa, mixing machine is 300-350 DEG C, and mixing machine rotating speed is
580-620r/min, agitating vane rotating speed are 700-720r/min, obtain fly-ash slag composite powder；
Mixed fly-ash slag composite powder is sent into No. 3 skies by No. 2 air conveyer flumes and bucket elevator successively
Gas conveys skewed slot, then is transported to fly-ash slag composite powder storehouse by No. 3 air transportation troughs, finally by bottom storehouse automobile bulk system
Dispatch from the factory sale.
Further, the slag is through special vertical mill grinding step：The slag stored in slag bank workshop is led to
Cross crane and be sent into slag feed bin, the main batch bin of slag is delivered into by conveyer, is sent through constant feeder to another conveyer；
The direct grinding of vertical mill is delivered into by screw conveyor again, the slag micropowder and underproof slag milling for obtaining qualification return
Material；In vertical mill grinding process, grinding roller pressure 11-13Mpa, 860-920 DEG C of hearth of hot-blast stove temperature are controlled, hot wind enters to grind temperature
300-350 DEG C, go out to grind 88-92 DEG C of temperature, powder concentrator rotating speed 100-120r/min, enters to grind feeding capacity 68-72t/h, enter to grind air quantity
20*104-22*104m3/h；Vertical mill slag milling feed back closed cycle step is：Slag milling feed back is sent by No.1 elevator
To vertical mill top, another feed inlet for being sent into screw conveyor entrance top vertical mill enters vertical mill grinding again.
Further, during Vertical Mill, vertical mill mill both vertically and horizontally amplitude is monitored in real time, if vertically
When direction amplitude ＞ 2.4mm, horizontal direction amplitude ＞ 1.8mm, then internal water spray is carried out to vertical mill, water spray is in 0.8-
2.2m3/ h, until vertical direction amplitude ＜ 2.4mm, horizontal direction amplitude ＜ 1.8mm；During Vertical Mill, while monitoring in real time
The hot blast temperature that vertical mill enters, if 355 DEG C of hot blast temperature ＞, carries out vertical mill internal water spray, water spray is in 0.8-
2.2m3/ h, until 355 DEG C of temperature ＜.
The advantage of the invention is that：
(1) flyash of the present invention, the production method of slag composite powder, 2-4 is pressed with flyash and slag powders:8-6 weight ratios
The life of production attack technology and the product simplification of fly-ash slag composite powder is directly produced after example proportioning into drum mixer
Production. art, improves the performance of slag powders, reduces the economic benefit that cost improves product, reaches domestic and international top standard；Roller
The yield of formula batch mixer exceedes designed capacity 150t/h, reaches 200t/h, the compound powder density >=2.6g/ of fly-ash slag of output
cm3, fluidity ratio >=95%, water content≤1.0%, activity index：7 days >=75%, 28 days >=95%, comprehensive power consumption ＜
40kwh/t；
(2) flyash of the present invention, the production method of slag composite powder, with groups such as screw conveyor, air flume, elevators
Into powder conveying yarn system, directly remove stage makeup and costume from harbour flyash bulk ship and be transported to flyash storehouse, simplify technique and save
Cost of transportation.
Brief description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the flow sheet of slag powders of the present invention.
Fig. 2 is flyash of the present invention, the process flow chart of the production method of slag composite powder.
Embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this
It is bright to be limited among the embodiment described scope.
Embodiment
The present embodiment flyash, slag composite powder production method in first have to pre-process slag,
(1) slag pre-processes：As shown in Figure 1, the slag stored in slag bank workshop, by 20T driving grab buckets grab into
It is transferred to after slag feed bin through No. 15 belt conveyors outside slag bank workshop on No. 16 belt conveyors, into the main dispensing of slag
Storehouse, enters constant feeder by threeway scraper-trough conveyer, is conveyed, be sent on screw conveyor by No. 17 belt conveyors after quantitative weighing
One feed inlet of square vertical mill enters vertical mill and carries out grinding, and grinding goes out qualified slag powders (i.e. slag micropowder) and slag milling returns
Material；
Qualified slag powders are collected by air box impulse bag-type dust remover, are sent by No. 4 air conveyer flumes to No. 2 bucket liftings
Machine, is sent to powder bank by No. 2 bucket elevators, and pushing up No. 5 air conveyer flumes through storehouse is delivered to slag powders storehouse.
Slag milling feed back is sent into No. 1 bucket elevator by No. 18 belt conveyors, send to vertical mill top, is fed in
Another feed inlet of vertical mill enters vertical mill grinding again above the defeated machine of helical feed, and grinding is into qualified slag powders.
In the present embodiment, in vertical mill grinding slag powders step, control the parameters of vertical mill as follows：
Vertical mill mill both vertically and horizontally amplitude is monitored in real time, if vertical direction amplitude ＞ 2.4mm, level side
During to amplitude ＞ 1.8mm, then internal water spray is carried out to vertical mill, water spray is in 0.8-2.2m3/ h, until vertical direction amplitude ＜
2.4mm, horizontal direction amplitude ＜ 1.8mm；During Vertical Mill, while the hot blast temperature that monitoring vertical mill enters in real time, if hot
355 DEG C of air temperature ＞, then carry out vertical mill internal water spray, water spray is in 0.8-2.2m3/ h, until 355 DEG C of temperature ＜.
The present embodiment vertical mill selects Xuzhou Fei Huang Heavy Machinery Plants to cooperate to grind with MCC Central Research Institute of Building and Construction Co., Ltd.
The special vertical mill of FRMSG32.3 ground-slags of hair.
(2) mixed powder is prepared：As shown in Fig. 2, flyash is used into screw conveyor and air from Bulk Transport ship first
The ash transfer system of the compositions such as skewed slot elevator is by ash transfer to flyash storehouse.
Then flyash and slag powders are together transported to No. 1 with respective storehouse side bulk system and sealed quantitative batcher
Air conveyer flume, conveying capacity is by flyash and slag powders 2-4:8-6 part by weight is prepared；Then by No. 1 air conveyer flume
Another feeding drum mixer is sufficiently mixed and produces fly-ash slag composite powder；In mixed process, control roller mixes
Temperature of the mixing machine pressure of material machine in 10-12MPa, mixing machine is 300-350 DEG C, and mixing machine rotating speed is 580-620r/
Min, agitating vane rotating speed are 700-720r/min.
The fly-ash slag composite powder produced is defeated by No. 2 air flumes, bucket elevator No. 3 air flumes of feeding again
Fly-ash slag composite powder storehouse is sent to, is finally dispatched from the factory sale by bottom storehouse automobile bulk system.
In the present embodiment, in drum mixer mixing flyash, lithium slag composite powder step, drum mixer is controlled
Parameters are as shown in table 1 below：
The production method of flyash based on the present embodiment, slag composite powder, product yield and comprehensive power consumption technical indicator
It is as shown in table 2 below：
The production method of flyash based on the present embodiment, slag composite powder, shown in its technical indicator table 3 specific as follows：
Table 3
The basic principle and main feature and advantages of the present invention of the present invention has been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (3)
- A kind of 1. production method of flyash, slag composite powder, it is characterised in that：The production method includes the following steps：(1) pre-process：By the slag powders that flyash and slag are obtained through special vertical mill grinding respectively enter flyash storehouse and Slag powders storehouse；(2) mixed powder is prepared：Flyash and slag powders press 2-4:8-6 weight ratios are mixed by respective constant feeder Enter No. 1 air conveyer flume after conjunction, then be sent into roller batch mixer and be sufficiently mixed by No. 1 air conveyer flume；Control rolling Temperature of the mixing machine pressure of dynamic formula batch mixer in 10-12MPa, mixing machine is 300-350 DEG C, and mixing machine rotating speed is 580- 620r/min, agitating vane rotating speed are 700-720r/min, obtain fly-ash slag composite powder；Mixed fly-ash slag composite powder is defeated by No. 2 air conveyer flumes and bucket elevator No. 3 air of feeding successively Skewed slot is sent, then fly-ash slag composite powder storehouse is transported to by No. 3 air transportation troughs, is finally dispatched from the factory by bottom storehouse automobile bulk system Sale.
- 2. the production method of flyash according to claim 1, slag composite powder, it is characterised in that：The slag is through special It is with vertical mill grinding step：The slag stored in slag bank workshop is sent into slag feed bin by crane, by conveyer The main batch bin of slag is delivered into, is sent through constant feeder to another conveyer；Vertical mill is delivered into by screw conveyor again Direct grinding, obtains the slag micropowder of qualification and underproof slag milling feed back；In vertical mill grinding process, grinding roller pressure is controlled Power 11-13Mpa, 860-920 DEG C of hearth of hot-blast stove temperature, hot wind enter to grind 300-350 DEG C of temperature, go out to grind 88-92 DEG C of temperature, select powder Machine rotating speed 100-120r/min, enters to grind feeding capacity 68-72t/h, enters to grind air quantity 20*104-22*104m3/h；Vertical mill slag milling Feed back closed cycle step is：Slag milling feed back is sent to vertical mill top by No.1 elevator, is sent into screw conveyor entrance Another feed inlet of top vertical mill enters vertical mill grinding again.
- 3. the production method of flyash according to claim 2, slag composite powder, it is characterised in that：During Vertical Mill, Vertical mill mill both vertically and horizontally amplitude is monitored in real time, if vertical direction amplitude ＞ 2.4mm, horizontal direction amplitude ＞ During 1.8mm, then internal water spray is carried out to vertical mill, water spray is in 0.8-2.2m3/ h, until vertical direction amplitude ＜ 2.4mm, water Square to amplitude ＜ 1.8mm；During Vertical Mill, while the hot blast temperature that monitoring vertical mill enters in real time, if hot blast temperature ＞ 355 DEG C, then internal water spray is carried out to vertical mill, water spray is in 0.8-2.2m3/ h, until 355 DEG C of temperature ＜.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711146005.5A CN107954622A (en) | 2017-11-17 | 2017-11-17 | A kind of production method of flyash, slag composite powder |
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| CN201711146005.5A CN107954622A (en) | 2017-11-17 | 2017-11-17 | A kind of production method of flyash, slag composite powder |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889771A (en) * | 2018-07-30 | 2018-11-27 | 河南心连心化肥有限公司 | A kind of coal ash comprehensive utilization of slag device and method of comprehensive utilization |
| CN110128041A (en) * | 2019-05-21 | 2019-08-16 | 四川富敏建材有限公司 | A kind of efficient mountain flour produces the process of flyash |
| CN110218827A (en) * | 2019-07-09 | 2019-09-10 | 鞍钢股份有限公司 | Molten blast furnace slag conditioning agent and preparation and use methods thereof |
| CN110694772A (en) * | 2019-10-21 | 2020-01-17 | 大峘集团有限公司 | Production process of slag and steel slag micropowder |
| CN113087425A (en) * | 2021-04-07 | 2021-07-09 | 万载金泉建材有限公司 | Method for preparing fly ash by using lithium slag and furnace slag |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104291714A (en) * | 2014-06-13 | 2015-01-21 | 江苏融达新材料股份有限公司 | Production method for grinding steel-iron slag powder, mineral slag powder and steel slag powder by using vertical mill |
| CN104307614A (en) * | 2014-06-13 | 2015-01-28 | 江苏融达新材料股份有限公司 | A method of grinding steel slag powder and mine slag powder and producing steel and iron slag powder by a vertical grinding mill |
| CN106076575A (en) * | 2016-07-01 | 2016-11-09 | 江苏融达新材料股份有限公司 | A kind of production method of superfine steel slag micropowder |
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2017
- 2017-11-17 CN CN201711146005.5A patent/CN107954622A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291714A (en) * | 2014-06-13 | 2015-01-21 | 江苏融达新材料股份有限公司 | Production method for grinding steel-iron slag powder, mineral slag powder and steel slag powder by using vertical mill |
| CN104307614A (en) * | 2014-06-13 | 2015-01-28 | 江苏融达新材料股份有限公司 | A method of grinding steel slag powder and mine slag powder and producing steel and iron slag powder by a vertical grinding mill |
| CN106076575A (en) * | 2016-07-01 | 2016-11-09 | 江苏融达新材料股份有限公司 | A kind of production method of superfine steel slag micropowder |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889771A (en) * | 2018-07-30 | 2018-11-27 | 河南心连心化肥有限公司 | A kind of coal ash comprehensive utilization of slag device and method of comprehensive utilization |
| CN108889771B (en) * | 2018-07-30 | 2024-08-20 | 河南心连心化学工业集团股份有限公司 | Comprehensive utilization device and comprehensive utilization method for coal ash slag |
| CN110128041A (en) * | 2019-05-21 | 2019-08-16 | 四川富敏建材有限公司 | A kind of efficient mountain flour produces the process of flyash |
| CN110218827A (en) * | 2019-07-09 | 2019-09-10 | 鞍钢股份有限公司 | Molten blast furnace slag conditioning agent and preparation and use methods thereof |
| CN110694772A (en) * | 2019-10-21 | 2020-01-17 | 大峘集团有限公司 | Production process of slag and steel slag micropowder |
| CN110694772B (en) * | 2019-10-21 | 2021-03-30 | 大峘集团有限公司 | Production process of slag and steel slag micropowder |
| CN113087425A (en) * | 2021-04-07 | 2021-07-09 | 万载金泉建材有限公司 | Method for preparing fly ash by using lithium slag and furnace slag |
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Application publication date: 20180424 |