CN106116195A - A kind of vertical mill grinding slag, lithium slag add modifying agent composite powder production method - Google Patents
A kind of vertical mill grinding slag, lithium slag add modifying agent composite powder production method Download PDFInfo
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- CN106116195A CN106116195A CN201610507934.3A CN201610507934A CN106116195A CN 106116195 A CN106116195 A CN 106116195A CN 201610507934 A CN201610507934 A CN 201610507934A CN 106116195 A CN106116195 A CN 106116195A
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- slag
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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
- 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
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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
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
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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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of vertical mill grinding slag, lithium slag adds modifying agent composite powder production method, it is characterized in that: preparation mixing slag: mixed by respective constant feeder in the components by weight percent ratio of 9 ~ 6:1 ~ 4 in steel slag tailings, lithium slag, and after adding modifying agent, enter conveying worm, then sent into the direct grinding of vertical mill by conveying worm.The present invention prepares slag, lithium slag composite powder, and its activity index is high, and energy consumption is little, takes full advantage of resource.
Description
Technical field
The present invention relates to a kind of vertical mill grinding slag, lithium slag adds modifying agent composite powder production method.
Background technology
Just becoming the bottleneck of restriction China economic development along with the fast development of China's economy, environment and resource problem, walking
The road of sustainable development, is the Critical policies of China's long-run development in future.The degree of depth comprehensive utilization of industrial residue is sustainable
One of core of development.Slag is steel-smelting electric furnace, the solid waste of pneumatic steelmaking generation, the flourishing state such as Japan, Germany, the U.S.
Family has already utilized in 80 years, basically reaches 100%.
China is iron and steel output big country, accounts for whole world total amount nearly 50%, and therefore China is also slag generation amount big country, every year
Slag generation measures 93,000,000 tons, more than 2.2 hundred million ton of slag.But China's steel slag utilization rate is extremely low, at present, annual utilization only has
20460000 tons, utilization rate is 22%, slag utilization rate 80%, utilization 1.76 hundred million tons.According to recent statistics up to now, steel slag
Annual capacity of stacking has reached 1.2123 hundred million tons, accumulative volume of cargo in storage 11.1753 hundred million tons.So to strengthen research and development slag profit during 13
By the input of technology, solve the utilization rate of slag as early as possible, accomplish zero-emission as early as possible, zero store up.
Containing the dicalcium silicate similar with cement and ferrous aluminate isoreactivity mineral in slag, there is hydraulic gelling
Property, therefore can as producing no first-hand datum or the cement raw material of few grog and admixture, simultaneously slag have that density is big, intensity is high,
Rough surface, good stability, the wear-resisting performance with good endurance.Steel-making slag powder can be as cement and the admixture of concrete, not only
Can the cement of equivalent substitution 10-30%, and the later strength of concrete can be improved, CO when can reduce manufacture of cement2Discharge capacity,
Reduce environmental pollution, preserve the ecological environment.
Lithium slag be spodumene after 1150 degree ~ 1300 degree high-temperature calcinations again with sulfuric acid process extract lithium carbonate grog through oozing
The residue discharged after washing is embathed in filter.The Xinjiang of China and Sichuan Shehong all have lithium salts factory.Often produce 1t lithium salts per year, about produce 8 ~
10t lithium slag.The lithium slag land occupation discharged, and easily run off with wind and rain, pollute environment, become the heavy burden of enterprise.Must enter
The research of row lot of experiments and technological development.
Lithium slag outward appearance is khaki, and containing certain moisture under natural drying, in powder after drying, granule is less, tool
There is the loose structure of bigger inner ratio surface area, water is had bigger absorbability.Its chemical composition is similar to clayey, predominantly oxygen
SiClx, aluminium oxide, calcium oxide and a small amount of sulfur trioxide etc., silicon oxide therein and aluminium oxide are most with amorphous Si O2
Exist, therefore there is good activity, can serve as cement additive and concrete admixture.From cement and concrete test
Result of study is seen, lithium ground-slag is compared with silica flour, slag powders, the activity of flyash, is followed successively by: silica flour ＞ lithium ground-slag ＞ slag powders ＞
Flyash, therefore lithium ground-slag can be used for configuring high-strength concrete.
Lithium dreg concrete has good mechanics and anti-permeability performance, can meet the special of the building such as pond, basement and want
Ask, also there is superior resistant abrasion performance, more can be suitably used for the buildings such as highway pavement, avenue and parking lot.
Through retrieval pertinent literature, there is now recycling slag and the technology of lithium slag, but do not find to use vertical mill powder
Mill slag and lithium slag add modifying agent and are combined the production Technology of grinding, therefore, research and develop a kind of novel vertical mill grinding slag,
It is imperative that lithium slag adds modifying agent composite powder production method.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of activity index height and can reduce the vertical mill of resource consumption
Grinding slag, lithium slag add modifying agent composite powder production method.
It is characterized in that concretely comprising the following steps:
Pretreatment: slag is processed, through processing metal recovery, the steel slag tailings feeding main batch bin of slag that step obtains, by lithium
Slag sends into lithium slag pair batch bin；
Preparation mixing slag: steel slag tailings is carried out by respective constant feeder in the components by weight percent ratio of 9 ~ 6:1 ~ 4 with lithium slag
After mixing, then adding modifying agent, the components by weight percent ratio of steel slag tailings and the mixed gross weight of lithium slag and modifying agent is 99:1,
The direct grinding of vertical mill is sent into by conveying worm after interpolation；In this step, modifying agent is lignosulphonic acid calcium powder and lignosulphonic acid
Sodium powder mixes with components by weight percent 7:3；
Vertical Mill: the grinding roller pressure controlling vertical mill is 3.1 ° at 13MPa, the lining board for grinding discs inclined angle of vertical mill, mill and mill
The roller nip angle when milling is 5 ~ 6 °, and hot blast enters vertical mill temperature 300-360 DEG C, and air quantity is at 20*104-21*104m3/ h, heat
Wind goes out vertical mill temperature 85-95 DEG C, and the powder concentrator rotating speed of vertical mill at 115-135r/min, obtains qualified slag, lithium slag multiple
Close powder and underproof slag, lithium slag are combined grinding feed back；
The slag obtained after vertical mill grinding, lithium slag are combined grinding feed back sequentially pass through No. three self-discharging type electric-magnetic iron removers, one
Number dry powder permanent-magnet drum type magnetic separator iron removal by magnetic separation, then delivered to vertical mill top by an elevator, through vibrating feed machine vibration cloth
Material, the thickness of feed layer of cloth is less than 20mm, and bed of material width and No. two dry powder permanent-magnet drum type magnetic separator magnetic rollers are identical, enters No. two and does
After powder permanent-magnet drum type magnetic separator iron removal by magnetic separation again, the another one charging aperture sending into conveying worm entrance top vertical mill enters
Entering vertical mill grinding again, the slag ferrum selected and magnetic separation respectively enter slag ferrum storehouse and magnetic separation storehouse；
The qualified slag, the lithium slag composite powder that obtain after vertical mill grinding enter slag, lithium slag composite powder storehouse；
In grinding process, monitoring vertical mill mill both vertically and horizontally amplitude in real time, if vertical direction amplitude ＞
2.5mm, during horizontal direction amplitude ＞ 2mm, then carries out internal water spray to vertical mill, and injection flow rate is at 1.5-2.2m3/ h, until vertically
Direction amplitude ＜ 2.5mm, horizontal direction amplitude ＜ 2mm；
In grinding process, the hot blast temperature entered in monitoring vertical mill the most in real time, at steel slag tailings and lithium slag component ratio
When 9:1 ~ 7.5:2.5, if the hot blast temperature ＞ 330 DEG C entered, then vertical mill to carry out internal water spray, injection flow rate is at 1.5-
2.2m3/ h, until temperature ＜ 330 DEG C；Steel slag tailings and lithium slag component ratio at 7.5:2.5 ~ 6:4 time, if the hot blast entered
Temperature ＞ 350 DEG C, then to carry out internal water spray to vertical mill, and injection flow rate is at 1.5-2.2m3/ h, until temperature ＜ 350 DEG C.
Further, described slag processing metal recovery process step includes slag crushing, except ferrum pretreatment closed cycle
Technique, and the pre-grinding of slag, iron removal by magnetic separation close circulation technology；
Slag crushing, except in ferrum pretreatment close circulation technology, slag first screens through hydraulic pressure turn sieve, sieves less than hydraulic pressure turn sieve
The slag of screen distance enters to award feed bin, is stably transported on conveyer after constant feeder weighs, and is sent into hydraulic jaw crusher
Broken, storage bin can be sent into after crushing；More than the slag quartering hammer coarse crushing of hydraulic pressure turn sieve mesh size, through magnechuck
Except being again introduced into the screening of hydraulic pressure turn sieve, such iterative cycles after ferrum, it is ensured that entrance is awarded the slag size controlling of feed bin and is being less than
In the pore diameter range of hydraulic pressure turn sieve screen cloth；
In the pre-grinding of slag, iron removal by magnetic separation close circulation technology, through slag crushing, except the slag of ferrum pretreatment in storage bin,
Stably it is transported on conveyer after constant feeder weighs, carries out pre-grinding by domestic rod mill and reduce slag particle diameter, and
Will be attached to the metallic particles on slag and the viscous slag blanket wrapping on metal is partially stripped；Entered by self-unloading type deferrization device after pre-grinding
Row is except ferrum, then carries out iron removal by magnetic separation by wide distributing device entrance broadband magnetic separator；
Steel slag tailings after the magnetic separator iron removal by magnetic separation of broadband is screened by No. two vibrosieves, more than No. two Vibration Screen screen distances
Steel slag tailings returns to storage bin to be again introduced into domestic rod mill to carry out pre-grinding；Steel less than No. two Vibration Screen screen distances
The steel slag tailings that slag tailings is sent in bank Factory Building after sending into two roll machine iron removal by magnetic separation again stores up district, the magnetic separation magneticly elected
Powder enters magnetic separation storehouse；
Described broadband magnetic separator crosses a vibrosieve screening except the slag Tie Tong that ferrum obtains, more than the slag of a Vibration Screen screen distance
Ferrum enters slag ferrum storehouse；Cross oscillating feeder less than the slag Tie Tong of a Vibration Screen screen distance and enter another two roll machine again
Magnetic separation, separates magnetic separation and steel slag tailings, and magnetic separation enters magnetic separation storehouse, and steel slag tailings is sent into the steel slag tailings of bank Factory Building and stored up
District.It is an advantage of the current invention that:
After steel slag tailings and lithium slag component 9 ~ 6:1 ~ 4 proportioning by weight, then enter domestic vertical mill, directly after adding modifying agent
Produce slag, the composite powder production Technology of lithium slag band modifying agent, simplify production technology, improve slag, lithium slag be combined
The performance of powder, reaches domestic and international leading advanced level.Owing to lithium slag activity ratio slag is good, such slag, the work of lithium slag composite powder
Degree improves further, makes the activity index raising of slag, lithium slag composite powder, thus improves the intensity of concrete.
The yield of vertical mill grinding exceedes designed capacity 45t/h, reaches 60t/h, product specific surface area ＞ 450m2/ kg, produces
The slag that goes out, lithium slag composite powder density >=2.8g/cm2, fluidity ratio >=95%, water content≤1.0%, activity index: 7d >=
75%, 28d >=85%, comprehensive power consumption ＜ 42 kwh/t.
Accompanying drawing explanation
Fig. 1 is slag processing metal recovery process chart in the present invention.
Fig. 2 is that vertical mill grinding slag of the present invention, lithium slag add modifying agent composite powder process chart.
Detailed description of the invention
The vertical mill grinding slag of the present invention, lithium slag add in modifying agent composite powder production method and carry out firstly the need of to slag
Pretreatment:
(1) slag processing metal recovery processes: as it is shown in figure 1, include slag crushing, except ferrum pretreatment close circulation technology, with
And the pre-grinding of slag, iron removal by magnetic separation close circulation technology；
Slag crushing, except in metal pretreatment close circulation technology, slag first screens through hydraulic pressure turn sieve, hydraulic pressure turn sieve
Screen-aperture is 200mm, and the slag of the particle diameter≤200mm filtered out enters to award feed bin, weighs through constant feeder, is stably transported to
On No. 1 belt conveyor, by No. 2 belt conveyors be sent into again hydraulic jaw crusher crush, control discharging particle diameter be≤
40mm, the slag after crushing sends into storage bins by No. 3 belt conveyors；The slag of the ＞ 200mm filtered out uses quartering hammer
Coarse crushing, with magnechuck except entering back into the continuation screening of hydraulic pressure turn sieve after ferrum, the slag of≤200mm enters and awards feed bin, the most instead
Multiple circulation, it is ensured that the slag size controlling of turnover hydraulic jaw crusher is in charging≤200mm, the particle size range of discharging≤40mm
In.
In the pre-grinding of slag, iron removal by magnetic separation close circulation technology, through slag crushing, except the steel of ferrum pretreatment in storage bin
Slag, is stably transported on No. 4 belt conveyors after constant feeder weighs, and carries out pre-grinding by domestic rod mill and reduces steel
Slag particle footpath, and will be attached to the metallic particles on slag and the viscous slag blanket wrapping on metal is partially stripped；By certainly after pre-grinding
The formula tramp iron separator of unloading is carried out except ferrum, then carries out iron removal by magnetic separation by wide distributing device entrance broadband magnetic separator；
Steel slag tailings after the magnetic separator iron removal by magnetic separation of broadband is delivered to No. two vibrosieves by No. 8 belt conveyors and screens, and this shakes
Dynamic sieve is comb vibrosieve, the steel slag tailings of ＞ 3mm return to storage bin by No. 9 belt conveyors, No. 3 belt conveyors so that
It is again introduced into domestic rod mill and carries out pre-grinding；The steel slag tailings of≤3mm enters two roll machine by No. 11 belt conveyors
The magnetic separation again selected after iron removal by magnetic separation enters magnetic separation storehouse, except after ferrum, steel slag tailings is transported to No. 13 by No. 12 belt conveyors
Rotate on defeated heap belt conveyor, and sent into slag bank Factory Building by it.
A vibrosieve screening is crossed by the slag Tie Tong that broadband magnetic separator iron removal by magnetic separation obtains, and this vibrosieve is comb vibrosieve,
The slag ferrum of ＞ 3mm enters slag ferrum storehouse；The slag Tie Tong of≤3mm crosses No. 10 belt conveyors and is transported to oscillating feeder and enters double roller
Magnetic separator magnetic separation again, separates magnetic separation and steel slag tailings, and magnetic separation enters magnetic separation storehouse, and steel slag tailings is by No. 12 Belt Conveyings
Machine is transported to No. 13 and rotates on defeated heap belt conveyor, and is sent into slag bank Factory Building by it.
(2) preparation mixing slag, as in figure 2 it is shown,
Steel slag tailings is transferred to No. 16 belt conveyors through No. 15 belt conveyors after being grabbed slag feed bin by 20T driving grab bucket
On, or be delivered directly on No. 16 belt conveyors by No. 13 defeated machines of belt, enter back into the main batch bin of slag.
Lithium slag slag is directly delivered into lithium slag pair dispensing through No. 19 belt conveyors after being grabbed lithium slag charge storehouse by 20T driving grab bucket
Storehouse.
Being delivered on No. 17 belt conveyors by No. two constant feeders by lithium slag pair batch bin, steel slag tailings is joined from slag master
Being sent on No. 17 belt conveyors by a constant feeder in feed bin, conveying capacity is 9 ~ 6:1 ~ 4 by steel slag tailings and lithium slag
Components by weight percent proportions.And in steel slag tailings with lithium slag, added modifying agent by No. three constant feeders.In the present invention, slag
Tailings, the gross weight of lithium slag and the part by weight of modifying agent are 99:1, its by lignosulphonic acid calcium powder with sodium lignosulfonate powder with weight
Amount component 7:3 mixes；Lignosulphonic acid calcium powder is Marasperse CBOS-4, available from the lignin sulphur of Lignotech, USA
Acid calcium powder.Sodium lignosulfonate powder is Borresperse NA, available from the lignosulphonic acid of Borregaard Lignotech USA
Sodium powder.
Add and send into vertical mill by conveying worm again after modifying agent and carry out grinding, obtain qualified slag, lithium slag is answered
Close powder and underproof slag, lithium slag are combined grinding feed back.
Qualified slag, lithium slag composite powder are collected by sack cleaner, an air conveyer flume deliver to No. two bucket types
Elevator, is delivered to powder bank top by No. two bucket elevators, and through top, storehouse, No. two air flumes are delivered to slag, lithium slag composite powder
Storehouse；Dispatch from the factory by open-type inflatable box entrance bottom of the reservior automobile bulk system is in bulk in slag, lithium slag composite powder storehouse.
Underproof slag, lithium slag are combined grinding feed back and send into No. three self-unloading electric magnetic iron removers by No. 18 belt conveyors
Carrying out once except ferrum, slag ferrum enters slag ferrum storehouse, once sends into a dry powder permanent-magnet drum type magnetic separator except the feed back after ferrum and carries out two
Secondary except ferrum, slag ferrum storehouse sent into by the slag ferrum of separation, and secondary sends into a bucket elevator except ferrum feed back, delivers to vertical mill top, then
By aerodynamic side threeway scraper-trough conveyer, feed back being sent into oscillating feeder, through vibrating feed machine vibration cloth, the thickness of feed layer of cloth is little
Identical, finally by No. two dry powder permanent-magnet chamber type magnetic separation in 20mm, bed of material width and No. two dry powder permanent-magnet drum type magnetic separator magnetic rollers
After machine removes ferrum three times, the another one charging aperture being fed in vertical mill above the defeated machine of helical feed enters vertical mill grinding again,
Grinding becomes qualified slag, lithium slag composite powder, the slag ferrum magneticly elected and magnetic separation to send into slag ferrum storehouse and magnetic separation storehouse.
(3) during vertical mill grinding slag, lithium slag composite powder: the grinding roller pressure controlling vertical mill enters at 13MPa, hot blast
Vertical mill temperature 300-360 DEG C, air quantity is at 20*104-21*104m3/ h, hot blast goes out vertical mill temperature 85-95 DEG C, the choosing of vertical mill
Powder machine rotating speed is at 115-135r/min；
In grinding process, monitoring vertical mill mill both vertically and horizontally amplitude in real time, if vertical direction amplitude ＞
2.5mm, during horizontal direction amplitude ＞ 2mm, then carries out internal water spray to vertical mill, and injection flow rate is at 1.5-2.2m3/ h, until vertically
Direction amplitude ＜ 2.5mm, horizontal direction amplitude ＜ 2mm；
In grinding process, the hot blast temperature entered in monitoring vertical mill the most in real time, at steel slag tailings and lithium slag component ratio
When 9:1 ~ 9:3, if the hot blast temperature ＞ 330 DEG C entered, then vertical mill to carry out internal water spray, injection flow rate is at 1.5-
2.2m3/ h, until temperature ＜ 330 DEG C；Steel slag tailings and lithium slag component ratio at 9:3 ~ 6:4 time, if the hot blast temperature entered
＞ 350 DEG C, then to carry out internal water spray to vertical mill, and injection flow rate is at 1.5-2.2m3/ h, until temperature ＜ 350 DEG C.
Meanwhile, adjusting vertical mill internal structure: the lining board for grinding discs inclined angle of vertical mill is 3.1 °, mill is grinding with grinding roller
Nip angle during mill is 5 ~ 6 °, and roller shell axis is 15 ° with the angle of horizontal plane.The present embodiment vertical mill selects Xuzhou to fly bright heavy type
Machinery plant and the special vertical mill of FRMSG32.3 steel-making slag powder of MCC Central Research Institute of Building and Construction Co., Ltd.'s R & D Cooperation.
In the present embodiment, vertical mill grinding slag, lithium slag add in modifying agent composite powder step, control every ginseng of vertical mill
Number is as follows:
Slag based on the present embodiment, lithium slag add modifying agent composite powder production method, product yield and comprehensive power consumption technical specification
As shown in table 1 below:
Slag based on the present embodiment, lithium slag add modifying agent composite powder production method, shown in its technical specification table specific as follows:
Table 2
。
Claims (2)
1. a vertical mill grinding slag, lithium slag add modifying agent composite powder production method, it is characterised in that concretely comprise the following steps:
Pretreatment: slag is processed, through processing metal recovery, the steel slag tailings feeding main batch bin of slag that step obtains, by lithium
Slag sends into lithium slag pair batch bin；
Preparation mixing slag: steel slag tailings is carried out by respective constant feeder in the components by weight percent ratio of 9 ~ 6:1 ~ 4 with lithium slag
After mixing, then adding modifying agent, the components by weight percent ratio of steel slag tailings and the mixed gross weight of lithium slag and modifying agent is 99:1,
The direct grinding of vertical mill is sent into by conveying worm after interpolation；In this step, modifying agent is lignosulphonic acid calcium powder and lignosulphonic acid
Sodium powder mixes with components by weight percent 7:3；
Vertical Mill: the grinding roller pressure controlling vertical mill is 3.1 ° at 13MPa, the lining board for grinding discs inclined angle of vertical mill, mill and mill
The roller nip angle when milling is 5 ~ 6 °, and hot blast enters vertical mill temperature 300-360 DEG C, and air quantity is at 20*104-21*104m3/ h, heat
Wind goes out vertical mill temperature 85-95 DEG C, and the powder concentrator rotating speed of vertical mill at 115-135r/min, obtains qualified slag, lithium slag multiple
Close powder and underproof slag, lithium slag are combined grinding feed back；
The slag obtained after vertical mill grinding, lithium slag are combined grinding feed back sequentially pass through No. three self-discharging type electric-magnetic iron removers, one
Number dry powder permanent-magnet drum type magnetic separator iron removal by magnetic separation, then delivered to vertical mill top by an elevator, through vibrating feed machine vibration cloth
Material, the thickness of feed layer of cloth is less than 20mm, and bed of material width and No. two dry powder permanent-magnet drum type magnetic separator magnetic rollers are identical, enters No. two and does
After powder permanent-magnet drum type magnetic separator iron removal by magnetic separation again, the another one charging aperture sending into conveying worm entrance top vertical mill enters
Entering vertical mill grinding again, the slag ferrum selected and magnetic separation respectively enter slag ferrum storehouse and magnetic separation storehouse；
The qualified slag, the lithium slag composite powder that obtain after vertical mill grinding enter slag, lithium slag composite powder storehouse；
In grinding process, monitoring vertical mill mill both vertically and horizontally amplitude in real time, if vertical direction amplitude ＞
2.5mm, during horizontal direction amplitude ＞ 2mm, then carries out internal water spray to vertical mill, and injection flow rate is at 1.5-2.2m3/ h, until vertically
Direction amplitude ＜ 2.5mm, horizontal direction amplitude ＜ 2mm；
In grinding process, the hot blast temperature entered in monitoring vertical mill the most in real time, at steel slag tailings and lithium slag component ratio
When 9:1 ~ 7.5:2.5, if the hot blast temperature ＞ 330 DEG C entered, then vertical mill to carry out internal water spray, injection flow rate is at 1.5-
2.2m3/ h, until temperature ＜ 330 DEG C；Steel slag tailings and lithium slag component ratio at 7.5:2.5 ~ 6:4 time, if the hot blast entered
Temperature ＞ 350 DEG C, then to carry out internal water spray to vertical mill, and injection flow rate is at 1.5-2.2m3/ h, until temperature ＜ 350 DEG C.
Vertical mill grinding slag the most according to claim 1, lithium slag add modifying agent composite powder production method, and its feature exists
In: described slag processing metal recovery process step include slag crushing, except ferrum pretreatment close circulation technology, and slag is pre-
Grinding, iron removal by magnetic separation close circulation technology；
Slag crushing, except in ferrum pretreatment close circulation technology, slag first screens through hydraulic pressure turn sieve, sieves less than hydraulic pressure turn sieve
The slag of screen distance enters to award feed bin, is stably transported on conveyer after constant feeder weighs, and is sent into hydraulic jaw crusher
Broken, storage bin can be sent into after crushing；More than the slag quartering hammer coarse crushing of hydraulic pressure turn sieve mesh size, through magnechuck
Except being again introduced into the screening of hydraulic pressure turn sieve, such iterative cycles after ferrum, it is ensured that entrance is awarded the slag size controlling of feed bin and is being less than
In the pore diameter range of hydraulic pressure turn sieve screen cloth；
In the pre-grinding of slag, iron removal by magnetic separation close circulation technology, through slag crushing, except the slag of ferrum pretreatment in storage bin,
Stably it is transported on conveyer after constant feeder weighs, carries out pre-grinding by domestic rod mill and reduce slag particle diameter, and
Will be attached to the metallic particles on slag and the viscous slag blanket wrapping on metal is partially stripped；Entered by self-unloading type deferrization device after pre-grinding
Row is except ferrum, then carries out iron removal by magnetic separation by wide distributing device entrance broadband magnetic separator；
Steel slag tailings after the magnetic separator iron removal by magnetic separation of broadband is screened by No. two vibrosieves, more than No. two Vibration Screen screen distances
Steel slag tailings returns to storage bin to be again introduced into domestic rod mill to carry out pre-grinding；Steel less than No. two Vibration Screen screen distances
The steel slag tailings that slag tailings is sent in bank Factory Building after sending into two roll machine iron removal by magnetic separation again stores up district, the magnetic separation magneticly elected
Powder enters magnetic separation storehouse；
Described broadband magnetic separator crosses a vibrosieve screening except the slag Tie Tong that ferrum obtains, more than the slag of a Vibration Screen screen distance
Ferrum enters slag ferrum storehouse；Cross oscillating feeder less than the slag Tie Tong of a Vibration Screen screen distance and enter another two roll machine again
Magnetic separation, separates magnetic separation and steel slag tailings, and magnetic separation enters magnetic separation storehouse, and steel slag tailings is sent into the steel slag tailings of bank Factory Building and stored up
District.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734335A (en) * | 2018-11-08 | 2019-05-10 | 江苏融达新材料股份有限公司 | A method of high-quality steel-making slag powder is produced based on steel slag modifying agent |
| CN114213051A (en) * | 2021-12-27 | 2022-03-22 | 江西永兴特钢新能源科技有限公司 | Method for producing high-activity mineral admixture by exciting steel slag activity with lithium slag |
| CN117025059A (en) * | 2023-08-17 | 2023-11-10 | 安徽工业大学 | Solid waste base wear-resistant epoxy floor coating and preparation method thereof |
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| CN105195268A (en) * | 2015-09-18 | 2015-12-30 | 江苏融达新材料股份有限公司 | Production method for grinding lithium slag and mineral slag composite powder by means of vertical grinding machine |
| CN105396673A (en) * | 2015-09-18 | 2016-03-16 | 江苏融达新材料股份有限公司 | Method for producing grinding nickel-iron slag and steel slag composite powder through grinding by using vertical mill |
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| CN105195268A (en) * | 2015-09-18 | 2015-12-30 | 江苏融达新材料股份有限公司 | Production method for grinding lithium slag and mineral slag composite powder by means of vertical grinding machine |
| CN105396673A (en) * | 2015-09-18 | 2016-03-16 | 江苏融达新材料股份有限公司 | Method for producing grinding nickel-iron slag and steel slag composite powder through grinding by using vertical mill |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734335A (en) * | 2018-11-08 | 2019-05-10 | 江苏融达新材料股份有限公司 | A method of high-quality steel-making slag powder is produced based on steel slag modifying agent |
| CN114213051A (en) * | 2021-12-27 | 2022-03-22 | 江西永兴特钢新能源科技有限公司 | Method for producing high-activity mineral admixture by exciting steel slag activity with lithium slag |
| CN114213051B (en) * | 2021-12-27 | 2023-02-17 | 江西永兴特钢新能源科技有限公司 | Method for producing high-activity mineral admixture by exciting steel slag activity with lithium slag |
| CN117025059A (en) * | 2023-08-17 | 2023-11-10 | 安徽工业大学 | Solid waste base wear-resistant epoxy floor coating and preparation method thereof |
| CN117025059B (en) * | 2023-08-17 | 2024-03-12 | 安徽工业大学 | Solid waste base wear-resistant epoxy floor coating and preparation method thereof |
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