CN102887660A - Slag micro powder machining process - Google Patents
Slag micro powder machining process Download PDFInfo
- Publication number
- CN102887660A CN102887660A CN2012104559650A CN201210455965A CN102887660A CN 102887660 A CN102887660 A CN 102887660A CN 2012104559650 A CN2012104559650 A CN 2012104559650A CN 201210455965 A CN201210455965 A CN 201210455965A CN 102887660 A CN102887660 A CN 102887660A
- Authority
- CN
- China
- Prior art keywords
- slag
- ball mill
- micro powder
- machining process
- roller press
- 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.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a slag micro powder machining process. The machining process comprises the following steps that: firstly slag is fed from a hopper, extruded and ground by a roller press, and then enters a grading machine for grading, and the slag with the grain diameter smaller than or equal to 2 mm is fed into a ball mill cement grinding system for grinding; the slag with the grain diameter bigger than or equal to 2 mm is returned to the roller press for re-extruding; and at one end of the outlet of the ball mill cement grinding system, dust is collected by a dust collector and discharged by an exhaust fan, the other end of the outlet of the ball mill cement grinding system is a ground slag micro powder discharge port, and slag micro powder enters a containing box through the discharge port so as to be packaged. The machining process provided by the invention has the great characteristics that the edge effect of the roller press is eliminated, and the requirements for supersaturated feeding of the roller press are met; and the yield is increased by over 60% compared with a primary closed-loop process of an ordinary ball mill, so that not only is the economic benefit remarkable, but also the operating cost is low and the maintenance quantity is small.
Description
Technical field
The invention belongs to building material field, particularly a kind of complete processing of slag micropowder.
Background technology
Along with the development that Chinese national economy is built, the demand of building concrete is increasing, slag micropowder can not only reduce its production cost as Additive and also economic worth considerable.Can utilize simultaneously the slag resource to solve environmental issue, meet strategy and policy and the requirement of China's Sustainable development fully.Because the blending slag micropowder can make concrete have good mechanical property and stability, therefore be widely used in the bridge and Highrise buildings of hydro project, high strength and large span of large volume, economic construction is played a part indispensable.
Three phases has mainly been passed through in the comprehensive utilization of slag in Cement industry:
1. the fs mainly is before nineteen ninety-five, and granulated blast-furnace slag mainly is to use as cement additive.Take combined grinding as main.Slag is because difficulty is ground, and the volume in cement is limited, generally is no more than 30%.
2. subordinate phase is 1995～2000 years, the learning overseas technology, and slag micropowder is promoted the use of in construction work as the high adulterant of high performance concrete.But require the slag micropowder surface-area will reach 600m
2More than/the kg, domesticly can meet the requirements of manufacturing enterprise seldom.
3. the phase III is after 2000, along with going deep into of milling equipment power-saving technology and slag micropowder application technical research, vast cement production enterprise is recognized, the most economical grinding fineness of slag micropowder should be controlled at 400m
2About/kg.Such slag micropowder can directly be supplied with concrete mixing plant and make adulterant, can synthesize high-content slag cement with grog, terra alba again.Along with the development of national economy, cement consumption significantly increases, and is also increasing as the consumption of the slag micropowder of dopant.
Summary of the invention
The production and processing technology that the purpose of this invention is to provide a kind of slag micropowder, the slag micropowder fineness and the output that adopt this explained hereafter to go out are all higher.
A kind of complete processing of slag micropowder, this complete processing is: slag is pushed through roll squeezer from hopper pulverize first, then enter the grading machine sorting, the slag of particle diameter≤2mm is sent into the ball mill cement grinding system and is carried out grinding; The above slag of particle diameter 〉=2mm returns roll squeezer and again pushes; From the ball mill cement grinding system out, an end is that dust is discharged by exhaust blower by dust-precipitator, and the other end is the relief outlet through the slag micropowder of grinding, and slag micropowder enters containing box through relief outlet and packs.
The maximum characteristics of complete processing of the present invention are the fringing effects of having eliminated roll squeezer, have satisfied the requirement of roll squeezer supersaturation feeding; Simultaneously can adopt " low Pressure and big circulating load technique ", reduce the operating pressure of roll squeezer, prolong roller shell work-ing life, improve operation factor.Needn't deliberately pursue the qualified fine powder content in the roll squeezer discharging, give full play to the regulating and controlling effect of grading machine.Facts have proved: this technical process more than 60%, reduces per unit area yield power consumption 15～20% than the closed circuit flow process volume increase of general milling machine one-level, and not only economic effect is remarkable, and working cost is low, a little repair.
Description of drawings
Fig. 1 is flow process chart of the present invention.
Embodiment
Slag micropowder is that the slag that iron-smelting blast furnace ejects is added a kind of powdery product that a small amount of grinding aid obtains behind super fine powder.Its main component is SiO
2, Al
2O
3, CaO etc., all have higher activity.It is mixed in the cement concrete SiO that these are active as Additive
2, Al
2O
3Can with C in the cement
2S and C
2The hydrated product that the S aquation produces is filled in the space of cement concrete, increases substantially the density of cement concrete, simultaneously the Ca(OH that intensity is lower)
2Crystal is converted into the higher hydrated calcium silicate gel of intensity, thereby a series of performances of cement concrete are significantly improved.
The invention provides a kind of complete processing of slag micropowder, its work flow is: slag is pushed through roll squeezer from hopper pulverize first, then enter the scattering grader sorting, (particle diameter≤2mm) send into the ball mill cement grinding system carries out grinding to fines; Coarse fodder (particle diameter is more than 2mm) returns roll squeezer and again pushes; From the ball mill cement grinding system out, an end is that dust is discharged by exhaust blower by dust-precipitator, and the other end is the relief outlet of slag micropowder, and the slag micropowder of producing enters containing box through relief outlet and packs.
Test by the slag micropowder that complete processing of the present invention is produced, its result is as follows:
Table 1 is for using the test-results after PO42.5 cement is admixed slag micropowder:
Table 2 is the test-results (M that slag micropowder can affect the agent on crack resistance of concrete water permeability
3/ kg):
| Numbering | Label | Water | Cement | Stone | Sand | Slag micropowder | Impervious grade |
| S1 | C30 | 170 | 340 | 994 | 916 | 0 | P8 |
| S2 | C30 | 170 | 238 | 994 | 916 | 102 | P30 is not saturating |
| S3 | C30 | 170 | 204 | 994 | 916 | 68 | P30 is not saturating |
Can find out that by above-mentioned test slag micropowder is different from the slag powders of common fineness in the past fully as fine powder.Because powder granule by fully refinement, can significantly increase its surface-area, consequent surface-area can be given cement concrete with new performance:
One, can enlarge markedly the flowability of concrete mortar, and reduce yielding stress and viscosity number, the concrete water-intake rate of corresponding reduction and chlorion diffusion system are improved and are improved concrete impervious, resistance to corrosion;
Two, can significantly reduce hydration heat and the early stage temperature tensile stress of aquation in the concrete;
Three, can significantly reduce concrete water percolating capacity, improve concrete workability;
Four, owing to an amount of slag micropowder of blending in the concrete, concrete density and intensity can significantly improve, and make concrete realize high performance ratio, are used for portland cement concrete and can save cement consumption, the cement consumption of energy equivalent replacement 15～30%, reduction cost.
Claims (1)
1. the complete processing of a slag micropowder, it is characterized in that: described complete processing is: first with slag from hopper through roll squeezer extruding pulverize, then enter the grading machine sorting, the slag of particle diameter≤2mm is sent into the ball mill cement grinding system and is carried out grinding; The above slag of particle diameter 〉=2mm returns roll squeezer and again pushes; From the ball mill cement grinding system out, an end is that dust is discharged by exhaust blower by dust-precipitator, and the other end is the relief outlet through the slag micropowder behind the grinding, and slag micropowder enters containing box through relief outlet and packs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104559650A CN102887660A (en) | 2012-11-14 | 2012-11-14 | Slag micro powder machining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104559650A CN102887660A (en) | 2012-11-14 | 2012-11-14 | Slag micro powder machining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102887660A true CN102887660A (en) | 2013-01-23 |
Family
ID=47531364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104559650A Pending CN102887660A (en) | 2012-11-14 | 2012-11-14 | Slag micro powder machining process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102887660A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104973813A (en) * | 2014-04-11 | 2015-10-14 | 舟山市汇邦建材有限公司 | Mineral slag micro powder and preparation method thereof |
| CN112939501A (en) * | 2021-02-23 | 2021-06-11 | 佳木斯市松江水泥有限公司 | Processing technology for processing superfine mineral powder by utilizing slag |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716549A (en) * | 2009-12-25 | 2010-06-02 | 武汉江力建材设备有限公司 | Combined grinding method for difficult-to-grind materials and equipment thereof |
-
2012
- 2012-11-14 CN CN2012104559650A patent/CN102887660A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716549A (en) * | 2009-12-25 | 2010-06-02 | 武汉江力建材设备有限公司 | Combined grinding method for difficult-to-grind materials and equipment thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104973813A (en) * | 2014-04-11 | 2015-10-14 | 舟山市汇邦建材有限公司 | Mineral slag micro powder and preparation method thereof |
| CN112939501A (en) * | 2021-02-23 | 2021-06-11 | 佳木斯市松江水泥有限公司 | Processing technology for processing superfine mineral powder by utilizing slag |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101767972B (en) | A kind of tailings sand brick and its preparation method | |
| CN106007568B (en) | A kind of method that coal mine filling lotion is prepared using biomass lime-ash | |
| CN103601381B (en) | Green high-performance cement and production method thereof | |
| CN104446041B (en) | A kind of method that secondary slag of Copper making produces slag micropowder | |
| CN103382124B (en) | A kind of molybdenum tailings air-entrained concrete building block and preparation method thereof | |
| CN101481223A (en) | Method for producing composite gel material from industrial residue and composite material thereof | |
| CN111072331B (en) | A method for preparing concrete from gneiss tailings and waste photovoltaic panels | |
| CN103755191A (en) | Mineral admixture with low water demand and preparation method thereof | |
| CN101544479A (en) | Compound active powder of ball milling steel slag tailing slurry and blast-furnace slag and application of compound active powder in preparing concrete | |
| CN102701625A (en) | Preparation method of concrete-used composite admixture | |
| CN110526732A (en) | Dry method p owder production foamed ceramic abbreviated system | |
| CN107746198A (en) | A kind of scrap glass powder composite blend and preparation method thereof | |
| CN103396158B (en) | A kind of Antibacterial molybdenum tailings air-entrained concrete building block and preparation method thereof | |
| CN204866115U (en) | Wet upright crocus of coal -fired slag of arranging grinds drying system | |
| CN102503199B (en) | Compound coal ash for concrete | |
| CN104370486B (en) | High-performance composite materials activation superfined flyash preparation technology and application | |
| CN102964082B (en) | High molecular synthetic cement grinding aid | |
| CN104446071A (en) | Dry sand making process | |
| CN108238731A (en) | The ultrafine slag powder and its preparation system and method for a kind of blast furnace ferronickel slag manufacture | |
| CN101157527A (en) | Basalt volcanic ash micro powder | |
| CN102765931A (en) | Method for preparing ceramic material utilizing magnetic separation tail sludge from steel slag wet process | |
| CN104529198A (en) | Silicate cement prepared from solid wastes and preparation method of silicate cement | |
| CN102887660A (en) | Slag micro powder machining process | |
| CN103232181A (en) | Preparation method of titanium dioxide slag concrete additive | |
| CN102276190A (en) | Method for producing sintered hollow bricks by utilizing waste residues of graphite tailings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130123 |