CN108298835A - A method of producing slag micropowder with blast furnace granulated slag - Google Patents
A method of producing slag micropowder with blast furnace granulated slag Download PDFInfo
- Publication number
- CN108298835A CN108298835A CN201810155501.5A CN201810155501A CN108298835A CN 108298835 A CN108298835 A CN 108298835A CN 201810155501 A CN201810155501 A CN 201810155501A CN 108298835 A CN108298835 A CN 108298835A
- Authority
- CN
- China
- Prior art keywords
- steam
- slag
- blast furnace
- furnace granulated
- granulated slag
- 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
- 239000002893 slag Substances 0.000 title claims abstract description 137
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000002245 particle Substances 0.000 claims abstract description 31
- 239000003595 mist Substances 0.000 claims abstract description 26
- 239000012716 precipitator Substances 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 19
- 239000008187 granular material Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000005299 abrasion Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 238000000498 ball milling Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 239000000047 product Substances 0.000 description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 7
- 230000009471 action Effects 0.000 description 7
- 239000010419 fine particle Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000292 calcium oxide Substances 0.000 description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 6
- 230000001939 inductive effect Effects 0.000 description 6
- 238000012797 qualification Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010310 metallurgical process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Furnace Details (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention discloses a kind of method producing slag micropowder with blast furnace granulated slag, includes the following steps：(1) blast furnace granulated slag is sent to buffer bin, then by feeding valve to steam mill in feeding；(2) blast furnace granulated slag is crushed in steam mill under the impact of high temperature and high pressure steam, and the particle mixture after crushing enters grader and is classified into micro mist and coarse granule；(3) micro mist enters dust-precipitator, and the coarse granule returns to steam mill and crushed again；(4) slag micropowder finished product is obtained after micro mist is detached with steam.The problem of being also easy to produce dust and noise pollution this method solve traditional ball milling, Vertical Mill production slag micropowder technique, realizes the green production of slag micropowder；Simultaneously because the high temperature and high pressure steam that power uses steel mill self-produced in production process, cost is substantially reduced compared with ball milling or Vertical Mill traditional handicraft.
Description
Technical field
The present invention relates to a kind of processing technology fields of blast furnace process waste, and in particular to a kind of to be produced with blast furnace granulated slag
The method of slag micropowder.
Background technology
Blast furnace granulated slag is the slag class that quantum of output is most in metallurgical process, the fusant based on calcium silicates and ca aluminosilicate,
Material through water quenching granulating, abbreviation grain slag, water-granulated slag etc. account for about 30% or so, the iron and steel enterprise one of 10,000,000 tons of scales
As 3,000,000 tons or so of output blast furnace granulated slag, a large amount of blast furnace granulated slags can not efficiently use, and pile up like a mountain, occupies a large amount of soils, wind
Change loses activity, and pollutes environment, destroys the ecological balance.The chemical composition of grain slag mainly has calcium oxide (CaO), silica
(SiO2), alundum (Al2O3) (Al2O3) etc. compositions, and grain slag activity it is good.The a large amount of water of the present annual output of Iron and Steel Enterprises in China
Slag, how to handle grain slag becomes a great problem of puzzlement steel enterprise.
Currently, the main processing method of blast furnace granulated slag that domestic steel mill generates is to be sold to cement nearby outside lower price
Factory, cement plant are processed into cement admixture by techniques such as ball milling or Vertical Mills.This processing mode, for steel mill, production
Raw metallurgical by-product does not realize the high value comprehensive utilization of blast furnace slag really, and for society, ball milling machines blast furnace slag
Not only production cost height also causes environment larger noise and dust pollution to technique, brings larger environmental protection negative to society
Load, this just greatly limits the ability that iron and steel enterprise plays maximum economic benefit and social benefit.
Invention content
In view of this, the application provide it is a kind of with blast furnace granulated slag produce slag micropowder method, solve traditional ball milling,
The problem of Vertical Mill production slag micropowder technique is also easy to produce dust and noise pollution, realizes the green production of slag micropowder；Simultaneously
Due to the high temperature and high pressure steam that power uses steel mill self-produced in production process, cost is apparent compared with ball milling or Vertical Mill traditional handicraft
It reduces.
In order to solve the above technical problems, technical solution provided by the invention is a kind of blast furnace granulated slag production slag micropowder
Method includes the following steps：(1) blast furnace granulated slag is sent to buffer bin, then by feeding valve to steam mill in feeding；(2)
Blast furnace granulated slag is crushed in steam mill under the impact of high temperature and high pressure steam, and the particle mixture after crushing enters grader point
Grade is at micro mist and coarse granule；(3) micro mist enters dust-precipitator, and the coarse granule returns to steam mill and crushed again；(4) micro-
Powder obtains slag micropowder finished product after being detached with steam.
Wherein, blast furnace granulated slag is crossed in charge of trucks to raw material cabin, and vibrating feeder is arranged under raw material cabin according to suitable speed
Degree is fed on belt conveyer, and the blast furnace slag on belt conveyer is submitted by elevator to buffer bin, then passes through feeding
Valve grinds interior feeding toward steam.
Preferably, the granularity of the blast furnace granulated slag is not more than 5mm, and water content is 10%~15%.
Wherein, the mass percentage of each component of the blast furnace material residue is TFe：0.3-0.6%, SiO2：25-30%,
Al2O3：14-16%, CaO：31-35%, MgO：8-10%, TiO2：6-8%, MnO：0.4-0.5, S：0.8-1.1.
Preferably, micro mist described in the step (3), which enters under the suction of air-introduced machine in dust-precipitator, realizes micro mist
With the separation of steam.
Wherein, it is sent to micro mist finished product bin by discharge auger after micro mist is detached with steam.
Preferably, air quantity is 4000-7000m to the air-introduced machine per hour3/h。
It is furthermore preferred that air quantity is 5000-6000m to the air-introduced machine per hour3/h。
Preferably, coarse granule still reaches to pass through less than the abrasion resistant particles of suitable particle size after crushing again in the step (3)
Steam mill lower end blanking valve timing discharges outward, is submitted to abrasion resistant particles feed bin by elevator.
Preferably, the baiting valve switch cycles time interval is set as 150-400s.
It is furthermore preferred that the baiting valve switch cycles time interval is set as 200-350s.
Preferably, the frequency of feeding valve is 10~20Hz in the step (1), and feeding capacity is 4-5 tons per hour.
It is furthermore preferred that the frequency of feeding valve is 15Hz in the step (1), feeding capacity is 4-5 tons per hour.
Preferably, the pressure of steam is 0.8MPa-1.5MPa in steam mill in the step (1), and temperature is 250 DEG C -400
DEG C, steam hour flow is 3-5 tons.
It is furthermore preferred that in the step (1) steam mill in steam pressure be 0.9MPa-1.2MPa, temperature be 280 DEG C-
360 DEG C, steam hour flow is 3.5-4.5 tons.
Preferably, the frequency of grader is 10-40Hz in the step (2).
It is furthermore preferred that the frequency of grader is 15-40Hz in the step (2).
Preferably, the speed of gathering dust of dust-precipitator is 4-10 ton hours in the step (3).
It is furthermore preferred that the speed of gathering dust of dust-precipitator is 5-8 ton hours in the step (3).
Compared with prior art, detailed description are as follows by the application：Slag is a kind of material with " latent hydraulicity ",
In the presence of its independent original state, substantially anhydrous hardness.But after excitation, the hydraulicity is taken on.So-called physical excitation：
Namely use the method for superfine grinding that slag micropowder is made in blast furnace slag powder.Slag after applying mechanical force, in
Portion's crystal structure meeting randomization and generation multiphase crystal transfer cause lattice defect to occur, specific surface area increases, surface energy increasing
Add, to generate the activity of cement.High temperature and high pressure steam by steam grind in nozzle, generate high-speed flow, and nozzle week
It encloses to form very high velocity gradient, the high turbulent flow of supersonic speed generated by nozzle is used as particulate vector.Blast furnace slag drawing through negative pressure
The effect of penetrating enters jet pipe, and high steam makees rotary motion in pulverizing chamber with particle and forms powerful swirling eddy, blast furnace slag
It not only to be hit between particle, but also high steam will also generate material particles impact shear effect, while material is also
Impact, friction, shear action occur for the pure cavity that be milled with steam.When the energy of collision is more than that slag granules inside is required
When energy, slag granules are just crushed.It crushes qualified fine particles to be shifted onto in grader by air-flow, thicker particle then continues
It is milled in pure chamber and crushes in steam, be finally reached crushing purpose.
The technical solution of the application is using blast furnace granulated slag as raw material, using high temperature and high pressure steam as kinetic energy, makes full use of steel mill rich
Rich blast furnace slag and high temperature and high pressure steam resources advantage, realizes the comprehensive utilization of resource, also realizes the purpose increased economic efficiency；
It solves traditional slag micropowder ball milling simultaneously or Vertical Mill production technology easy tos produce the environmental protection such as noise and dust and asks in process of production
The shortcomings that topic, realizes the green production of slag micropowder；Simultaneously because the height that power uses steel mill self-produced in production process
Warm high steam, cost reduce by 120% compared with ball milling or Vertical Mill traditional handicraft, realize the production of slag micropowder low cost.
Description of the drawings
Fig. 1 is the process flow chart for the specific embodiment that blast furnace granulated slag provided by the invention produces slag micropowder.
Specific implementation mode
In order to make those skilled in the art more fully understand technical scheme of the present invention, with reference to specific embodiment pair
The present invention is described in further detail.
The present invention provides a kind of methods producing slag micropowder with blast furnace granulated slag comprising following steps：
(1) blast furnace slag in charge of trucks to raw material cabin, under raw material cabin by being arranged vibrating feeder according to suitable speed
It feeds on belt conveyer, the blast furnace slag on belt conveyer is submitted by elevator to buffer bin, then passes through feeding valve
Interior feeding is ground toward steam, the wherein FREQUENCY CONTROL of feeding valve is controlled in 10~20Hz, hour feeding capacity at 4-5 tons；
(2) blast furnace slag fed in steam mill is in the high temperature and high pressure steam injected by the nozzle around mill body
Smashed under impact, crush the grader that qualified fine particles grind epimere by steam, under the action of air-introduced machine suction into
Enter to realize the separation of micro mist and steam in dust-precipitator, and is sent to micro mist finished product bin by discharge auger；Wherein steam in steam mill
Pressure control is controlled in 0.8MPa-1.5MPa, temperature at 250 DEG C -400 DEG C, and steam hour flow control is at 3-5 tons.Slag is micro-
The powder dust-precipitator unit interval amount of gathering dust is 4-10 ton hours.Slag micropowder, which gathers dust, needs air-introduced machine to carry out air inducing, hour air quantity control
Position 4000-7000m processed3/h。
(3) thick particle then continues to be milled in pure chamber in steam and crush, and grader is entered after granularity qualification；Wherein,
Grader FREQUENCY CONTROL is in 10-40Hz.Really it can not smash to the abrasion resistant particles of release mesh and lower end blanking is then ground by steam
Valve timing discharges outward, is submitted to abrasion resistant particles feed bin by elevator.Steam grinds lower end discharge valve switch cycles time interval
It is set as 150-400 seconds.
Embodiment 1
A method of slag micropowder being produced with blast furnace granulated slag, a method of producing slag micropowder, institute with blast furnace granulated slag
The granularity for stating blast furnace granulated slag is 2~4mm, and the mass percentage of water content 10%, each component of furnace charge slag is TFe：
0.3%, SiO2：25%, Al2O3：16%, CaO：35%, MgO：10%, TiO2：8%, MnO：0.6, S：1.1, surplus is miscellaneous
Matter.
It includes the following steps：
(1) blast furnace slag in charge of trucks to raw material cabin, under raw material cabin by being arranged vibrating feeder according to suitable speed
It feeds on belt conveyer, the blast furnace slag on belt conveyer is submitted by elevator to buffer bin, then passes through feeding valve
Interior feeding is ground toward steam, the wherein FREQUENCY CONTROL of feeding valve is controlled in 15Hz, hour feeding capacity at 4.5 tons；
(2) blast furnace slag fed in steam mill is in the high temperature and high pressure steam injected by the nozzle around mill body
Smashed under impact, crush the grader that qualified fine particles grind epimere by steam, under the action of air-introduced machine suction into
Enter to realize the separation of micro mist and steam in dust-precipitator, and is sent to micro mist finished product bin by discharge auger；Wherein steam in steam mill
Pressure control is controlled in 0.8MPa, temperature at 250 DEG C DEG C, and steam hour flow control is at 3 tons.When slag micropowder dust-precipitator unit
Between the amount of gathering dust be 4 ton hours.Slag micropowder, which gathers dust, needs air-introduced machine to carry out air inducing, hour Boiler pressure control position 4000m3/h。
(3) thick particle then continues to be milled in pure chamber in steam and crush, and grader is entered after granularity qualification；Wherein,
Grader FREQUENCY CONTROL is in 10Hz.Really it can not smash to the abrasion resistant particles of release mesh and then be determined by steam mill lower end baiting valve
When discharge outward, submitted to abrasion resistant particles feed bin by elevator.Steam grinds the setting of lower end discharge valve switch cycles time interval
It is 150 seconds.
Embodiment 2
A method of slag micropowder being produced with blast furnace granulated slag, the granularity of the blast furnace granulated slag is 2~5mm, and water content is
12%, the mass percentage of each component of furnace charge slag is TFe：0.6%, SiO2：30%, Al2O3：14%, CaO：31%,
MgO：10%, TiO2：7%, MnO：0.4, S：1.0, surplus is impurity.
It includes the following steps：
(1) blast furnace slag in charge of trucks to raw material cabin, under raw material cabin by being arranged vibrating feeder according to suitable speed
It feeds on belt conveyer, the blast furnace slag on belt conveyer is submitted by elevator to buffer bin, then passes through feeding valve
Interior feeding is ground toward steam, the wherein FREQUENCY CONTROL of feeding valve is controlled in 10Hz, hour feeding capacity at 4 tons；
(2) blast furnace slag fed in steam mill is in the high temperature and high pressure steam injected by the nozzle around mill body
Smashed under impact, crush the grader that qualified fine particles grind epimere by steam, under the action of air-introduced machine suction into
Enter to realize the separation of micro mist and steam in dust-precipitator, and is sent to micro mist finished product bin by discharge auger；Wherein steam in steam mill
Pressure control is controlled in 0.9MPa, temperature at 280 DEG C, and steam hour flow control is at 3.5 tons.When slag micropowder dust-precipitator unit
Between the amount of gathering dust be 5 ton hours.Slag micropowder, which gathers dust, needs air-introduced machine to carry out air inducing, hour Boiler pressure control position 5000m3/h。
(3) thick particle then continues to be milled in pure chamber in steam and crush, and grader is entered after granularity qualification；Wherein,
Grader FREQUENCY CONTROL is in 15Hz.Really it can not smash to the abrasion resistant particles of release mesh and then be determined by steam mill lower end baiting valve
When discharge outward, submitted to abrasion resistant particles feed bin by elevator.Steam grinds the setting of lower end discharge valve switch cycles time interval
It is 200 seconds.
Embodiment 3
A method of slag micropowder being produced with blast furnace granulated slag, a method of producing slag micropowder, institute with blast furnace granulated slag
The granularity for stating blast furnace granulated slag is 2~4mm, and the mass percentage of water content 15%, each component of furnace charge slag is TFe：
0.6%, SiO2：30%, Al2O3：14%, CaO：31%, MgO：10%, TiO2：7%, MnO：0.4, S：1.0, surplus is miscellaneous
Matter.
It includes the following steps：
(1) blast furnace slag in charge of trucks to raw material cabin, under raw material cabin by being arranged vibrating feeder according to suitable speed
It feeds on belt conveyer, the blast furnace slag on belt conveyer is submitted by elevator to buffer bin, then passes through feeding valve
Interior feeding is ground toward steam, the wherein FREQUENCY CONTROL of feeding valve is controlled in 20Hz, hour feeding capacity at 5 tons；
(2) blast furnace slag fed in steam mill is in the high temperature and high pressure steam injected by the nozzle around mill body
Smashed under impact, crush the grader that qualified fine particles grind epimere by steam, under the action of air-introduced machine suction into
Enter to realize the separation of micro mist and steam in dust-precipitator, and is sent to micro mist finished product bin by discharge auger；Wherein steam in steam mill
Pressure control is controlled in 1.0MPa, temperature at 300 DEG C, and steam hour flow control is at 4 tons.The slag micropowder dust-precipitator unit interval
The amount of gathering dust is 6 ton hours.Slag micropowder, which gathers dust, needs air-introduced machine to carry out air inducing, hour Boiler pressure control position 6000m3/h。
(3) thick particle then continues to be milled in pure chamber in steam and crush, and grader is entered after granularity qualification；Wherein,
Grader FREQUENCY CONTROL is in 20Hz.Really it can not smash to the abrasion resistant particles of release mesh and then be determined by steam mill lower end baiting valve
When discharge outward, submitted to abrasion resistant particles feed bin by elevator.Steam grinds the setting of lower end discharge valve switch cycles time interval
It is 300 seconds.
Embodiment 4
A method of slag micropowder being produced with blast furnace granulated slag, a method of producing slag micropowder, institute with blast furnace granulated slag
The granularity for stating blast furnace granulated slag is 2~4mm, and the mass percentage of water content 13%, each component of furnace charge slag is TFe：
0.6%, SiO2：30%, Al2O3：14%, CaO：31%, MgO：10%, TiO2：7%, MnO：0.4, S：1.0 surplus is miscellaneous
Matter.
It includes the following steps：
(1) blast furnace slag in charge of trucks to raw material cabin, under raw material cabin by being arranged vibrating feeder according to suitable speed
It feeds on belt conveyer, the blast furnace slag on belt conveyer is submitted by elevator to buffer bin, then passes through feeding valve
Interior feeding is ground toward steam, the wherein FREQUENCY CONTROL of feeding valve is controlled in 15Hz, hour feeding capacity at 5 tons；
(2) blast furnace slag fed in steam mill is in the high temperature and high pressure steam injected by the nozzle around mill body
Smashed under impact, crush the grader that qualified fine particles grind epimere by steam, under the action of air-introduced machine suction into
Enter to realize the separation of micro mist and steam in dust-precipitator, and is sent to micro mist finished product bin by discharge auger；Wherein steam in steam mill
Pressure control is controlled in 1.2MPa, temperature at 360 DEG C, and steam hour flow control is at 4.5 tons.When slag micropowder dust-precipitator unit
Between the amount of gathering dust be 8 ton hours.Slag micropowder, which gathers dust, needs air-introduced machine to carry out air inducing, hour Boiler pressure control position 6000m3/h。
(3) thick particle then continues to be milled in pure chamber in steam and crush, and grader is entered after granularity qualification；Wherein,
Grader FREQUENCY CONTROL is in 30Hz.Really it can not smash to the abrasion resistant particles of release mesh and then be determined by steam mill lower end baiting valve
When discharge outward, submitted to abrasion resistant particles feed bin by elevator.Steam grinds the setting of lower end discharge valve switch cycles time interval
It is 350 seconds.
Embodiment 5
A method of slag micropowder being produced with blast furnace granulated slag, a method of producing slag micropowder, institute with blast furnace granulated slag
The granularity for stating blast furnace granulated slag is 2~4mm, and the mass percentage of water content 10%, each component of furnace charge slag is TFe：
0.6%, SiO2：30%, Al2O3：14%, CaO：31%, MgO：10%, TiO2：7%, MnO：0.4, S：1.0, surplus is miscellaneous
Matter.
It includes the following steps：
(1) blast furnace slag in charge of trucks to raw material cabin, under raw material cabin by being arranged vibrating feeder according to suitable speed
It feeds on belt conveyer, the blast furnace slag on belt conveyer is submitted by elevator to buffer bin, then passes through feeding valve
Interior feeding is ground toward steam, the wherein FREQUENCY CONTROL of feeding valve is controlled in 20Hz, hour feeding capacity at 5 tons；
(2) blast furnace slag fed in steam mill is in the high temperature and high pressure steam injected by the nozzle around mill body
Smashed under impact, crush the grader that qualified fine particles grind epimere by steam, under the action of air-introduced machine suction into
Enter to realize the separation of micro mist and steam in dust-precipitator, and is sent to micro mist finished product bin by discharge auger；Wherein steam in steam mill
Pressure control is controlled in 1.5MPa, temperature at 400 DEG C, and steam hour flow control is at 5 tons.The slag micropowder dust-precipitator unit interval
The amount of gathering dust is 10 ton hours.Slag micropowder, which gathers dust, needs air-introduced machine to carry out air inducing, hour Boiler pressure control position 7000m3/h。
(3) thick particle then continues to be milled in pure chamber in steam and crush, and grader is entered after granularity qualification；Wherein,
Grader FREQUENCY CONTROL is in 40Hz.Really it can not smash to the abrasion resistant particles of release mesh and then be determined by steam mill lower end baiting valve
When discharge outward, submitted to abrasion resistant particles feed bin by elevator.Steam grinds the setting of lower end discharge valve switch cycles time interval
It is 400 seconds.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
Protection scope of the present invention is also should be regarded as into retouching.
Claims (10)
1. a kind of method producing slag micropowder with blast furnace granulated slag, which is characterized in that include the following steps：(1) by blast furnace granulated slag
Send to buffer bin, then by feeding valve to steam mill in feeding；(2) blast furnace granulated slag is interior in high temperature and high pressure steam in steam mill
Impact under be crushed, the particle mixture after crushing enters grader and is classified into micro mist and coarse granule；(3) micro mist enters
Dust-precipitator, the coarse granule return to steam mill and are crushed again；(4) slag micropowder finished product is obtained after micro mist is detached with steam.
2. the method according to claim 1 for producing slag micropowder with blast furnace granulated slag, which is characterized in that the blast furnace granulated slag
Granularity be not more than 5mm, water content be 10%~15%.
3. the method according to claim 1 for producing slag micropowder with blast furnace granulated slag, which is characterized in that the step (3)
Described in micro mist under the suction of air-introduced machine enter dust-precipitator in realize micro mist and steam separation.
4. the method according to claim 3 for producing slag micropowder with blast furnace granulated slag, which is characterized in that the air-introduced machine is every
Hour air quantity is 4000-7000m3/h。
5. the method according to claim 1 for producing slag micropowder with blast furnace granulated slag, which is characterized in that the step (3)
Middle coarse granule still reaches to arrange outward by steam mill lower end blanking valve timing less than the abrasion resistant particles of suitable particle size after crushing again
It puts, is submitted to abrasion resistant particles feed bin by elevator.
6. the method according to claim 5 for producing slag micropowder with blast furnace granulated slag, which is characterized in that the baiting valve is opened
Pass circulation time is set to 150-400s.
7. the method according to claim 1 for producing slag micropowder with blast furnace granulated slag, which is characterized in that the step (1)
The frequency of middle feeding valve is 10~20Hz, and feeding capacity is 4-5 tons per hour.
8. the method according to claim 1 for producing slag micropowder with blast furnace granulated slag, which is characterized in that the step (1)
The pressure of steam is 0.8MPa-1.5MPa in middle steam mill, and temperature is 250 DEG C -400 DEG C, and steam hour flow is 3-5 tons.
9. the method according to claim 1 for producing slag micropowder with blast furnace granulated slag, which is characterized in that the step (2)
The frequency of middle grader is 10-40Hz.
10. the method according to claim 1 for producing slag micropowder with blast furnace granulated slag, which is characterized in that the step (3)
The speed of gathering dust of middle dust-precipitator is 4-10 ton hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810155501.5A CN108298835A (en) | 2018-02-23 | 2018-02-23 | A method of producing slag micropowder with blast furnace granulated slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810155501.5A CN108298835A (en) | 2018-02-23 | 2018-02-23 | A method of producing slag micropowder with blast furnace granulated slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108298835A true CN108298835A (en) | 2018-07-20 |
Family
ID=62848699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810155501.5A Pending CN108298835A (en) | 2018-02-23 | 2018-02-23 | A method of producing slag micropowder with blast furnace granulated slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108298835A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109336146A (en) * | 2018-11-16 | 2019-02-15 | 山西大学 | A kind of method of fly ash alkali dissolving improving pre-desilication rate |
| CN111672874A (en) * | 2020-06-12 | 2020-09-18 | 陕西正元环保科技产业(集团)有限公司 | Method for recycling slag and fly ash and boiler system of coal-fired power plant |
| CN112479629A (en) * | 2020-12-17 | 2021-03-12 | 安徽成弘建新材料有限公司 | Steel slag and blast furnace granulated slag composite powder and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101654343A (en) * | 2008-08-22 | 2010-02-24 | 陈海焱 | Method for preparing microfine mineral admixture by using waste heat of kiln |
| CN101716547A (en) * | 2008-10-10 | 2010-06-02 | 卢忠远 | Method for preparing ultra-fine powder by waste heat of plant |
| CN102847597A (en) * | 2011-05-27 | 2013-01-02 | 耐驰-康多克斯研磨技术有限责任公司 | Method for operating a jet mill and jet mill |
| CN205128124U (en) * | 2015-11-23 | 2016-04-06 | 潍坊埃尔派粉体技术设备有限公司 | Superheated steam jet milling device |
| CN105855014A (en) * | 2016-03-28 | 2016-08-17 | 北京首钢国际工程技术有限公司 | Steel slag superfine powder production process |
| CN106145720A (en) * | 2015-03-27 | 2016-11-23 | 宝山钢铁股份有限公司 | A kind of processing method of steel-making slag powder |
-
2018
- 2018-02-23 CN CN201810155501.5A patent/CN108298835A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101654343A (en) * | 2008-08-22 | 2010-02-24 | 陈海焱 | Method for preparing microfine mineral admixture by using waste heat of kiln |
| CN101716547A (en) * | 2008-10-10 | 2010-06-02 | 卢忠远 | Method for preparing ultra-fine powder by waste heat of plant |
| CN102847597A (en) * | 2011-05-27 | 2013-01-02 | 耐驰-康多克斯研磨技术有限责任公司 | Method for operating a jet mill and jet mill |
| CN106145720A (en) * | 2015-03-27 | 2016-11-23 | 宝山钢铁股份有限公司 | A kind of processing method of steel-making slag powder |
| CN205128124U (en) * | 2015-11-23 | 2016-04-06 | 潍坊埃尔派粉体技术设备有限公司 | Superheated steam jet milling device |
| CN105855014A (en) * | 2016-03-28 | 2016-08-17 | 北京首钢国际工程技术有限公司 | Steel slag superfine powder production process |
Non-Patent Citations (3)
| Title |
|---|
| 章得龙: "《超超临界火电机组培训系列教材•锅炉分册》", 31 October 2013, 北京：中国电力出版社 * |
| 郑水林: "《非金属矿加工技术与应用手册》", 31 May 2005, 北京：冶金工业出版社 * |
| 顾林: "《食品机械与设备》", 30 June 2016, 北京：中国纺织出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109336146A (en) * | 2018-11-16 | 2019-02-15 | 山西大学 | A kind of method of fly ash alkali dissolving improving pre-desilication rate |
| CN111672874A (en) * | 2020-06-12 | 2020-09-18 | 陕西正元环保科技产业(集团)有限公司 | Method for recycling slag and fly ash and boiler system of coal-fired power plant |
| CN112479629A (en) * | 2020-12-17 | 2021-03-12 | 安徽成弘建新材料有限公司 | Steel slag and blast furnace granulated slag composite powder and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104291714B (en) | The production method of vertical mill grinding iron and steel ground-slag, slag powders and steel-making slag powder | |
| CN102978305B (en) | Molten steel casting residue treatment and recycling method | |
| CN110711762B (en) | A kind of stage grinding method of steel slag-industrial by-product gypsum composite powder | |
| CN202337732U (en) | Separate grinding system for producing cement | |
| CN103537366B (en) | The method of high grade iron is reclaimed from blast furnace dry slag | |
| CN106145720B (en) | A kind of processing method of steel-making slag powder | |
| CN108298835A (en) | A method of producing slag micropowder with blast furnace granulated slag | |
| CN103214198A (en) | Cement production method | |
| CN104388608B (en) | Dry granulation waste heat recovery and grinding treatment system | |
| CN105174765A (en) | Method for preparing construction sand and active slag powder through water-quenched vanadium-titanium slag | |
| CN112934378B (en) | Preparation system for producing building material products by gradient utilization of hot stuffy steel slag | |
| AU2020101153A4 (en) | A Method For Grinding To Get Slag Micro-powder In Stages | |
| CN109092844B (en) | Steel slag multistage treatment method | |
| CN105039681B (en) | A kind of manufacture method of alkaline magnesium-rich pellet nodulizing | |
| CN109704606A (en) | A system for preparing recycled aggregate based on particle impact crushed waste concrete | |
| CN204865997U (en) | Hierarchical grinding structure of parallelly connected grinding unit that vertical roller ground | |
| CN104109742B (en) | A kind of injection solid impurity particle hits broken melting slag waste heat recovery system | |
| CN106116195A (en) | A kind of vertical mill grinding slag, lithium slag add modifying agent composite powder production method | |
| CN211071241U (en) | Rock wool slag ball system of recycling | |
| CN107537639A (en) | A kind of steel ball for ball mill adds control device automatically | |
| CN106830721A (en) | A kind of steel-making slag powder and its preparation method and application | |
| CN102351452B (en) | Ultrafine fly ash production technology | |
| CN110606674A (en) | Final grinding method of slag and steel slag composite micro powder roller press | |
| CN101664707A (en) | Slag micropowder superfine open-circuit production line | |
| CN109382191A (en) | Slag micro powder equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180720 |
|
| RJ01 | Rejection of invention patent application after publication |