CN107032644B - The treatment process of nickel slag in a kind of nickel dreg concrete process - Google Patents

The treatment process of nickel slag in a kind of nickel dreg concrete process Download PDF

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Publication number
CN107032644B
CN107032644B CN201710272423.2A CN201710272423A CN107032644B CN 107032644 B CN107032644 B CN 107032644B CN 201710272423 A CN201710272423 A CN 201710272423A CN 107032644 B CN107032644 B CN 107032644B
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nickel
ball
slag
grinding cylinder
ball grinding
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CN107032644A (en
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孔加春
罗乃将
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Jiangsu Ding Ding Building Materials Group Co Ltd
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Jiangsu Ding Ding Building Materials Group Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B5/00Treatment of metallurgical slag; Artificial stone from molten metallurgical slag
    • C04B5/06Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04Waste materials; Refuse
    • C04B18/14Waste materials; Refuse from metallurgical processes
    • C04B18/141Slags
    • C04B18/144Slags from the production of specific metals other than iron or of specific alloys, e.g. ferrochrome slags
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The treatment process of nickel slag, specific steps in a kind of nickel dreg concrete process of the present invention are as follows: grinding micronization processes, hydration activity processing and durability processing.Advantage is: removing magnetic mechanism by new and effective grinding, can effectively reduce abrasion of the iron to roll squeezer, extend service life, by removing iron twice, can effectively remove the iron content in nickel slag;Using being passed through nickel steam in vacuum high temperature furnace, and by nickel powder and the mode be sieved, the particle size of nickel powder can be effectively controlled, and it is unified to guarantee obtained nickel ground-slag partial size, thus nickel dreg concrete quality produced after can further improve;By adjusting CaO/SiO2Than, nickel slag and kaolinic compatibility forms and hydrothermal condition, and by the formation of hydrated product under seed technology promotion hydrothermal condition, so that the hyrate with gelling can be obtained;By using high temperature and pressure hydrothermal technique, hydrated calcium silicate, Mg (OH) are formed2Equal mineral, so that content of MgO be effectively reduced, and improve the durability of nickel dreg concrete.

Description

The treatment process of nickel slag in a kind of nickel dreg concrete process
Technical field
The present invention relates to a kind of processing of nickel slag in nickel Slag treatment technical field more particularly to nickel dreg concrete process Technique.
Background technique
Nickel slag is a kind of industrial residue discharged during metal smelting nickel, and main component is FeO and SiO2.In nickel slag Essential mineral be mutually pyroxene, iron forsterite and a small amount of cupro-nickel iron sulfide.With the rapid development of our country's economy, China Nickel yield rapid development, the resulting nickel quantity of slag are also growing day by day in recent years.The stacking of outdoor waste residue not only occupies big Land resource is measured, the heavy metal ion such as Ni, Co, Cu contained cause serious pollution to environment.According to statistics, it is obtained due to long-term Less than reasonable utilization, the nickel quantity of slag of domestic stockpiling is more than ten million ton at present, and is incremented by every year with millions of tons of amount, nickel slag Problem of complex utilization obtain pay attention to day by day.
Currently, the industrialization application technology about nickel slag is still immature, relevant issues are concentrated mainly on the following aspects:
(1) working process problem caused by the grindability difference of nickel slag;
(2) the low problem of concrete application performance caused by nickel slag hydration activity is low;
(3) Durability of Concrete caused by nickel slag oxidation content of magnesium is high.
Summary of the invention
It is easily ground to solve the above problems, can effectively solve nickel slag in nickel dreg concrete process the invention discloses one kind The nickel residues processing technique that property is poor, hydration activity is low and swelling potential is big.
In order to reach the goals above, the invention provides the following technical scheme:
A kind for the treatment of process of nickel slag in nickel dreg concrete process, it is characterised in that: specific steps are as follows:
1) grinding micronization processes: nickel slag is put into new and effective grinding first and is removed in magnetic mechanism, pre- grinding, first time are carried out Except iron, whole grinding and second except ironworker makees, nickel ground-slag is obtained;Then nickel ground-slag is put into vacuum high temperature furnace, is heated to 200 ~300 DEG C, 0.04~0.05Pa of vacuum degree is adjusted, keeps 5~8min;Then it is passed through nickel steam into vacuum high temperature furnace, controls 20~80Kpa of pressure, and stir 10~20min;Nickel powder dried and screened are handled later, obtain the consistent nickel ground-slag of partial size;
2) hydration activity is handled: CaO, SiO are added first into the nickel ground-slag that step 1) obtains2And kaolin, stirring 10 ~15min is to being sufficiently mixed;Then mixture is placed in water heating kettle, and adds crystal seed, hydro-thermal is carried out at 120~170 DEG C Processing, hydro-thermal time are 10~15 hours;Then cooling to water heating kettle, obtain the hyrate with gelling;
3) durability is handled: the hyrate that step 2 is obtained is put into high temperature and pressure hydro-thermal reaction kettle, controls temperature 250 ~350 DEG C, 10~15MPa of pressure, 3~5h of reaction time;It is subsequent to take out and use pure argon progress high pressure gas drying dry, divide 2 ~5 air-blowings, 1~3s every time, air-blowing number is more, and each air-blowing time is shorter;Finally it is air-cooled to room temperature.
The treatment process of nickel slag in a kind of nickel dreg concrete process of the present invention, first progress grinding micronization processes, are adopted Magnetic mechanism is removed with new and effective grinding, pre- grinding successively is carried out to nickel slag, for the first time except iron, whole grinding and second are except ironworker Make, and obtained nickel ground-slag is placed in vacuum high temperature furnace, is passed through nickel steam, is then dried and is sieved, obtain partial size Consistent nickel ground-slag.Magnetic mechanism is removed by new and effective grinding, on the one hand, is carried out pre- grinding using roll squeezer, be can effectively reduce Abrasion of the iron to roll squeezer extends service life, on the other hand, using the first deironing apparatus, by vibration, so that after pre- grinding Nickel ground-slag constantly hit electromagnetism and go out iron plate, the content of iron can be effectively removed, while the second deironing apparatus is protruded into ball-milling device It is interior, iron power removing can be further removed in ball milling, so that the iron content in nickel slag can be effectively removed by removing iron twice, in addition, Ball-milling device reversely rotates ball milling using the ball grinding cylinder being arranged inside and outside two, by two ball grinding cylinders, can further improve ball milling Efficiency, thus by nickel slag grinding at fine-powdered required for nickel dreg concrete;In addition, being steamed using nickel is passed through in vacuum high temperature furnace Gas, and by nickel powder and the mode be sieved, the particle size of nickel powder can be effectively controlled, and guarantee obtained nickel ground-slag partial size system One, thus nickel dreg concrete quality produced after can further improve.
Then hydration activity processing is carried out, CaO, SiO are added first into obtained nickel ground-slag2And kaolin, stirring 10 ~15min is to being sufficiently mixed;Then mixture is placed in water heating kettle, and adds crystal seed, hydro-thermal is carried out at 120~170 DEG C Processing, hydro-thermal time are 10~15 hours;Then cooling to water heating kettle, obtain the hyrate with gelling.Pass through adjusting CaO/SiO2Than, nickel slag and kaolinic compatibility forms and hydrothermal condition, and passes through aquation under seed technology promotion hydrothermal condition The formation of product obtains the hyrate with gelling.
Durability processing is finally carried out, obtained hyrate is put into high temperature and pressure hydro-thermal reaction kettle, controls temperature 250 ~350 DEG C, 10~15MPa of pressure, 3~5h of reaction time;It is subsequent to take out and use pure argon progress high pressure gas drying dry, divide 2 ~5 air-blowings, 1~3s every time, air-blowing number is more, and each air-blowing time is shorter;Finally it is air-cooled to room temperature.Since metallurgy of nickel is useless Slag content of MgO is high, is usually above the expansion of 10%, Yi Yinqi product, by using high temperature and pressure hydrothermal technique, forms aquation silicon Sour calcium, Mg (OH) 2Equal mineral improve the durability of nickel dreg concrete so that content of MgO be effectively reduced.
Further, new and effective grinding described in step 1) grinding micronization processes except magnetic mechanism include feeding device, Rolling device, the first deironing apparatus, ball-milling device and the second deironing apparatus, the rolling device feeding inlet are arranged in feeding device Below discharge end, the first deironing apparatus feeding inlet is arranged below rolling device discharge port, the ball-milling device feeding inlet It is connect with the first deironing apparatus discharge port.
Further, first deironing apparatus includes inclined support panel, and the inclined support panel is equipped with jolting plate, institute It states jolting plate bottom to connect by seismic mass with inclined support panel, upper end is connected with feeding plate, sets above the inclined support panel There is parallel with jolting plate and adaptation electromagnetism except iron plate, inclined support panel lower end is connected with reclaiming plate.
Further, the longitudinal section of the vibration plate top surface along its length is serrated, and jolting plate two sides are additionally provided with Baffle.
Further, the ball-milling device includes the first ball grinding cylinder and the second ball grinding cylinder, and second ball grinding cylinder is set in Outside first ball grinding cylinder, one end of first ball grinding cylinder is ball-milling device feeding inlet, and the side wall of second ball grinding cylinder is equipped with Ball-milling device discharge port, is evenly equipped with filter hole on the side wall of first ball grinding cylinder, in first ball grinding cylinder and the first ball Grinding is contained between mill tube and the second ball grinding cylinder respectively with the first steel ball and the second steel ball, be evenly equipped on first steel ball and The end of the compatible protrusion of filter hole, first ball grinding cylinder and the second ball grinding cylinder is respectively equipped with the first gear ring and the second tooth Circle, first gear ring and the second gear ring are respectively cooperating with and are connected with first motor and the second motor.
Further, the ball-milling device discharge port, which goes out, is equipped with filter screen.
Further, second deironing apparatus includes electromagnetism except iron prop, and the electromagnetism removes iron prop from the first ball grinding cylinder The other end protrudes into the first ball grinding cylinder.
Further, the feeding device includes the conveyer belt being obliquely installed.
Further, the rolling device is roll squeezer.
Compared with prior art, the beneficial effects of the present invention are: by new and effective grinding remove magnetic mechanism, on the one hand, Pre- grinding is carried out using roll squeezer, can effectively reduce abrasion of the iron to roll squeezer, extends service life, on the other hand, using the One deironing apparatus, so that the nickel ground-slag after pre- grinding, which constantly hits electromagnetism, goes out iron plate, can effectively remove containing for iron by vibration Amount, while the second deironing apparatus being protruded into ball-milling device, iron power removing can be further removed in ball milling, thus by removing twice Iron can effectively remove the iron content in nickel slag, in addition, ball-milling device passes through two balls using the ball grinding cylinder being arranged inside and outside two Mill tube reversely rotates ball milling, can further improve grinding efficiency, thus by nickel slag grinding at fine powder required for nickel dreg concrete Shape;In addition, using nickel steam is passed through in vacuum high temperature furnace, and by nickel powder and the mode be sieved, nickel powder can be effectively controlled Particle size, and it is unified to guarantee obtained nickel ground-slag partial size, thus nickel dreg concrete matter produced after can further improve Amount;By adjusting CaO/SiO2Than, nickel slag and kaolinic compatibility forms and hydrothermal condition, and promotes hydro-thermal by seed technology Under the conditions of hydrated product formation, so that the hyrate with gelling can be obtained;Additionally, due to metallurgy of nickel waste residue content of MgO Height is usually above the expansion of 10%, Yi Yinqi product, by using high temperature and pressure hydrothermal technique, forms hydrated calcium silicate, Mg (OH) 2Equal mineral, so that content of MgO be effectively reduced, and improve the durability of nickel dreg concrete.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that new and effective grinding removes magnetic mechanism in the present invention.
Reference signs list:
1- feeding device, 11- feeding device feeding end, 12- feeding device discharge end, 13- conveyer belt, 2- rolling device, 21- rolling device feeding inlet, 22- rolling device discharge port, the first deironing apparatus of 3-, 31- the first deironing apparatus feeding inlet, 32- First deironing apparatus discharge port, 33- inclined support panel, 34- jolting plate, 35- seismic mass, 36- electromagnetism remove iron plate, 37- feeding plate, 38- reclaiming plate, 38- baffle 4- ball-milling device, 41- ball-milling device feeding inlet, 42- ball-milling device discharge port, the first ball milling of 43- Cylinder, the second ball grinding cylinder of 44-, the first steel ball of 45-, 451- protrusion, the second steel ball of 46-, the first gear ring of 47-, the second gear ring of 48-, 49- First motor, the second motor of 50-, the second deironing apparatus of 5-, 51- electromagnetism remove iron prop.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only For illustrating the present invention rather than limiting the scope of the invention.
Embodiment 1
The treatment process of nickel slag, specific steps in a kind of nickel dreg concrete process are as follows:
1) grinding micronization processes: nickel slag is put into new and effective grinding first and is removed in magnetic mechanism, pre- grinding, first time are carried out Except iron, whole grinding and second except ironworker makees, nickel ground-slag is obtained;Then nickel ground-slag is put into vacuum high temperature furnace, is heated to 200 DEG C, vacuum degree 0.05Pa is adjusted, 5min is kept;Then it is passed through nickel steam into vacuum high temperature furnace, controls pressure 80Kpa, and stir Mix 10min;Nickel powder dried and screened are handled later, obtain the consistent nickel ground-slag of partial size;
2) hydration activity is handled: CaO, SiO are added first into the nickel ground-slag that step 1) obtains2And kaolin, stirring 15min is to being sufficiently mixed;Then mixture is placed in water heating kettle, and adds crystal seed, hydro-thermal process, water are carried out at 120 DEG C The hot time is 15 hours;Then cooling to water heating kettle, obtain the hyrate with gelling;
3) durability is handled: the hyrate that step 2 is obtained is put into high temperature and pressure hydro-thermal reaction kettle, controls temperature 250 DEG C, pressure 15MPa, reaction time 3h;It then takes out and carries out high pressure gas using pure argon and dry up dry, point 5 air-blowings, every time 1s;Finally it is air-cooled to room temperature.
Wherein, it includes feeding device 1, rolling device 2, the first deironing apparatus 3, ball milling dress that new and effective grinding, which removes magnetic mechanism, 4 and second deironing apparatus 5 are set, rolling device feeding inlet 21 is arranged below feeding device discharge end 12, and the first deironing apparatus enters Material mouth 31 is arranged below rolling device discharge port 22, and ball-milling device feeding inlet 41 is connect with the first deironing apparatus discharge port 31. First deironing apparatus 3 includes inclined support panel 33, and inclined support panel 33 is equipped with jolting plate 34, and 34 bottom of jolting plate passes through vibration Block 35 is connect with inclined support panel 33, and upper end is connected with feeding plate 37, is equipped with above inclined support panel 33 parallel with jolting plate 34 And the electromagnetism of adaptation removes iron plate 36,33 lower end of inclined support panel is connected with reclaiming plate 38.Jolting plate 34 top surface is along its length Longitudinal section is serrated, and 34 two sides of jolting plate are additionally provided with baffle 38.Ball-milling device 4 includes the first ball grinding cylinder 43 and the second ball milling Cylinder 44, the second ball grinding cylinder 44 is set in outside the first ball grinding cylinder 43, and one end of the first ball grinding cylinder 43 is ball-milling device feeding inlet 41, the The side wall of two ball grinding cylinders 44 is equipped with ball-milling device discharge port 42, is evenly equipped with filter hole on the side wall of the first ball grinding cylinder 43 and (does not draw Out), it is contained with the first steel ball of grinding respectively in the first ball grinding cylinder 43 and between the first ball grinding cylinder 43 and the second ball grinding cylinder 44 45 and second steel ball 46, compatible with filter hole (not shown) raised 451 are evenly equipped on the first steel ball 45, the first ball grinding cylinder 43 The first gear ring 47 and the second gear ring 48, the first gear ring 47 and the second gear ring 48 difference are respectively equipped with the end of the second ball grinding cylinder 44 It is connected with first motor 49 and the second motor 50.Ball-milling device discharge port 42 goes out to be equipped with filter screen (not shown).Second removes Iron device 5 includes that electromagnetism removes iron prop 51, and electromagnetism protrudes into the first ball grinding cylinder 43 except iron prop 51 from the other end of the first ball grinding cylinder 43. In the present embodiment, feeding device 1 includes the conveyer belt 13 being obliquely installed, and rolling device 2 is roll squeezer.
In processing, nickel slag passes through feeding device 1 first and transports at rolling device feeding inlet 21, is then filled by roll-in The 2 pre- grindings of carry out are set, the nickel ground-slag of subsequent pre- grinding drops into the first deironing apparatus feeding inlet 21 from rolling device discharge port 22 On the feeding plate 37 at place, since jolting plate 34 is inclination vibration, so that the nickel ground-slag on jolting plate 34 constantly tilts injection And electromagnetism is touched except 36 bottom of iron plate, iron powder and the higher nickel ground-slag of iron-content are attracted to electromagnetism except 36 bottom of iron plate, and Other nickel ground-slags drop on jolting plate 34 again under the action of bounce and gravity, and since 34 top of jolting plate is along length The longitudinal section in degree direction is serrated so that nickel ground-slag in impinging electromagnetic except after iron plate 36, can be gradually from the top of jolting plate 34 On the reclaiming plate 38 for moving to bottom, and eventually falling at the first deironing apparatus discharge port 22, pass through first time deironing apparatus The higher nickel ground-slag of the iron powder and iron-content effectively removed, subsequent nickel ground-slag enter in ball-milling device, the first ball grinding cylinder 43 When rotation, nickel ground-slag partial size is constantly milled to the filtering bore dia less than the first ball grinding cylinder 43, and in the convex of the first steel ball 45 Under playing 451, the filter hole of the first ball grinding cylinder 43 is constantly pushed through between the first ball grinding cylinder 43 and the second ball grinding cylinder 44, together When the ball milling in the first ball grinding cylinder 43, the electromagnetism of the second deironing apparatus 5 except iron prop 51 by iron powder when ball milling and iron-content compared with High nickel ground-slag further adsorbs away, and passes through the filter hole of the first ball grinding cylinder 43 to the first ball grinding cylinder 43 and the second ball grinding cylinder Nickel ground-slag between 44 is further ground under the action of the second steel ball 46 again, and finally from the ball on 44 side wall of the second ball grinding cylinder Mill apparatus discharge port 42 is discharged.
Embodiment 2
The treatment process of nickel slag, specific steps in a kind of nickel dreg concrete process are as follows:
1) grinding micronization processes: nickel slag is put into new and effective grinding first and is removed in magnetic mechanism, pre- grinding, first time are carried out Except iron, whole grinding and second except ironworker makees, nickel ground-slag is obtained;Then nickel ground-slag is put into vacuum high temperature furnace, is heated to 300 DEG C, vacuum degree 0.04Pa is adjusted, 8min is kept;Then it is passed through nickel steam into vacuum high temperature furnace, controls pressure 20Kpa, and stir Mix 20min;Nickel powder dried and screened are handled later, obtain the consistent nickel ground-slag of partial size;
2) hydration activity is handled: CaO, SiO are added first into the nickel ground-slag that step 1) obtains2And kaolin, stirring 10min is to being sufficiently mixed;Then mixture is placed in water heating kettle, and adds crystal seed, hydro-thermal process, water are carried out at 170 DEG C The hot time is 10 hours;Then cooling to water heating kettle, obtain the hyrate with gelling;
3) durability is handled: the hyrate that step 2 is obtained is put into high temperature and pressure hydro-thermal reaction kettle, controls temperature 350 DEG C, pressure 10MPa, reaction time 5h;It then takes out and carries out high pressure gas using pure argon and dry up dry, point 2 air-blowings, every time 3s;Finally it is air-cooled to room temperature.
Wherein, it includes feeding device 1, rolling device 2, the first deironing apparatus 3, ball milling dress that new and effective grinding, which removes magnetic mechanism, 4 and second deironing apparatus 5 are set, rolling device feeding inlet 21 is arranged below feeding device discharge end 12, and the first deironing apparatus enters Material mouth 31 is arranged below rolling device discharge port 22, and ball-milling device feeding inlet 41 is connect with the first deironing apparatus discharge port 31. First deironing apparatus 3 includes inclined support panel 33, and inclined support panel 33 is equipped with jolting plate 34, and 34 bottom of jolting plate passes through vibration Block 35 is connect with inclined support panel 33, and upper end is connected with feeding plate 37, is equipped with above inclined support panel 33 parallel with jolting plate 34 And the electromagnetism of adaptation removes iron plate 36,33 lower end of inclined support panel is connected with reclaiming plate 38.Jolting plate 34 top surface is along its length Longitudinal section is serrated, and 34 two sides of jolting plate are additionally provided with baffle 38.Ball-milling device 4 includes the first ball grinding cylinder 43 and the second ball milling Cylinder 44, the second ball grinding cylinder 44 is set in outside the first ball grinding cylinder 43, and one end of the first ball grinding cylinder 43 is ball-milling device feeding inlet 41, the The side wall of two ball grinding cylinders 44 is equipped with ball-milling device discharge port 42, is evenly equipped with filter hole on the side wall of the first ball grinding cylinder 43 and (does not draw Out), it is contained with the first steel ball of grinding respectively in the first ball grinding cylinder 43 and between the first ball grinding cylinder 43 and the second ball grinding cylinder 44 45 and second steel ball 46, compatible with filter hole (not shown) raised 451 are evenly equipped on the first steel ball 45, the first ball grinding cylinder 43 The first gear ring 47 and the second gear ring 48, the first gear ring 47 and the second gear ring 48 difference are respectively equipped with the end of the second ball grinding cylinder 44 It is connected with first motor 49 and the second motor 50.Ball-milling device discharge port 42 goes out to be equipped with filter screen (not shown).Second removes Iron device 5 includes that electromagnetism removes iron prop 51, and electromagnetism protrudes into the first ball grinding cylinder 43 except iron prop 51 from the other end of the first ball grinding cylinder 43. In the present embodiment, feeding device 1 includes the conveyer belt 13 being obliquely installed, and rolling device 2 is roll squeezer.
In processing, nickel slag passes through feeding device 1 first and transports at rolling device feeding inlet 21, is then filled by roll-in The 2 pre- grindings of carry out are set, the nickel ground-slag of subsequent pre- grinding drops into the first deironing apparatus feeding inlet 21 from rolling device discharge port 22 On the feeding plate 37 at place, since jolting plate 34 is inclination vibration, so that the nickel ground-slag on jolting plate 34 constantly tilts injection And electromagnetism is touched except 36 bottom of iron plate, iron powder and the higher nickel ground-slag of iron-content are attracted to electromagnetism except 36 bottom of iron plate, and Other nickel ground-slags drop on jolting plate 34 again under the action of bounce and gravity, and since 34 top of jolting plate is along length The longitudinal section in degree direction is serrated so that nickel ground-slag in impinging electromagnetic except after iron plate 36, can be gradually from the top of jolting plate 34 On the reclaiming plate 38 for moving to bottom, and eventually falling at the first deironing apparatus discharge port 22, pass through first time deironing apparatus The higher nickel ground-slag of the iron powder and iron-content effectively removed, subsequent nickel ground-slag enter in ball-milling device, the first ball grinding cylinder 43 When rotation, nickel ground-slag partial size is constantly milled to the filtering bore dia less than the first ball grinding cylinder 43, and in the convex of the first steel ball 45 Under playing 451, the filter hole of the first ball grinding cylinder 43 is constantly pushed through between the first ball grinding cylinder 43 and the second ball grinding cylinder 44, together When the ball milling in the first ball grinding cylinder 43, the electromagnetism of the second deironing apparatus 5 except iron prop 51 by iron powder when ball milling and iron-content compared with High nickel ground-slag further adsorbs away, and passes through the filter hole of the first ball grinding cylinder 43 to the first ball grinding cylinder 43 and the second ball grinding cylinder Nickel ground-slag between 44 is further ground under the action of the second steel ball 46 again, and finally from the ball on 44 side wall of the second ball grinding cylinder Mill apparatus discharge port 42 is discharged.
Embodiment 3
The treatment process of nickel slag, specific steps in a kind of nickel dreg concrete process are as follows:
1) grinding micronization processes: nickel slag is put into new and effective grinding first and is removed in magnetic mechanism, pre- grinding, first time are carried out Except iron, whole grinding and second except ironworker makees, nickel ground-slag is obtained;Then nickel ground-slag is put into vacuum high temperature furnace, is heated to 250 DEG C, vacuum degree 0.045Pa is adjusted, 7min is kept;Then it is passed through nickel steam into vacuum high temperature furnace, controls pressure 50Kpa, and stir Mix 15min;Nickel powder dried and screened are handled later, obtain the consistent nickel ground-slag of partial size;
2) hydration activity is handled: CaO, SiO are added first into the nickel ground-slag that step 1) obtains2And kaolin, stirring 12min is to being sufficiently mixed;Then mixture is placed in water heating kettle, and adds crystal seed, hydro-thermal process, water are carried out at 150 DEG C The hot time is 13 hours;Then cooling to water heating kettle, obtain the hyrate with gelling;
3) durability is handled: the hyrate that step 2 is obtained is put into high temperature and pressure hydro-thermal reaction kettle, controls temperature 300 DEG C, pressure 12MPa, reaction time 4h;It then takes out and carries out high pressure gas using pure argon and dry up dry, point 3 air-blowings, every time 2s;Finally it is air-cooled to room temperature.
Wherein, it includes feeding device 1, rolling device 2, the first deironing apparatus 3, ball milling dress that new and effective grinding, which removes magnetic mechanism, 4 and second deironing apparatus 5 are set, rolling device feeding inlet 21 is arranged below feeding device discharge end 12, and the first deironing apparatus enters Material mouth 31 is arranged below rolling device discharge port 22, and ball-milling device feeding inlet 41 is connect with the first deironing apparatus discharge port 31. First deironing apparatus 3 includes inclined support panel 33, and inclined support panel 33 is equipped with jolting plate 34, and 34 bottom of jolting plate passes through vibration Block 35 is connect with inclined support panel 33, and upper end is connected with feeding plate 37, is equipped with above inclined support panel 33 parallel with jolting plate 34 And the electromagnetism of adaptation removes iron plate 36,33 lower end of inclined support panel is connected with reclaiming plate 38.Jolting plate 34 top surface is along its length Longitudinal section is serrated, and 34 two sides of jolting plate are additionally provided with baffle 38.Ball-milling device 4 includes the first ball grinding cylinder 43 and the second ball milling Cylinder 44, the second ball grinding cylinder 44 is set in outside the first ball grinding cylinder 43, and one end of the first ball grinding cylinder 43 is ball-milling device feeding inlet 41, the The side wall of two ball grinding cylinders 44 is equipped with ball-milling device discharge port 42, is evenly equipped with filter hole on the side wall of the first ball grinding cylinder 43 and (does not draw Out), it is contained with the first steel ball of grinding respectively in the first ball grinding cylinder 43 and between the first ball grinding cylinder 43 and the second ball grinding cylinder 44 45 and second steel ball 46, compatible with filter hole (not shown) raised 451 are evenly equipped on the first steel ball 45, the first ball grinding cylinder 43 The first gear ring 47 and the second gear ring 48, the first gear ring 47 and the second gear ring 48 difference are respectively equipped with the end of the second ball grinding cylinder 44 It is connected with first motor 49 and the second motor 50.Ball-milling device discharge port 42 goes out to be equipped with filter screen (not shown).Second removes Iron device 5 includes that electromagnetism removes iron prop 51, and electromagnetism protrudes into the first ball grinding cylinder 43 except iron prop 51 from the other end of the first ball grinding cylinder 43. In the present embodiment, feeding device 1 includes the conveyer belt 13 being obliquely installed, and rolling device 2 is roll squeezer.
In processing, nickel slag passes through feeding device 1 first and transports at rolling device feeding inlet 21, is then filled by roll-in The 2 pre- grindings of carry out are set, the nickel ground-slag of subsequent pre- grinding drops into the first deironing apparatus feeding inlet 21 from rolling device discharge port 22 On the feeding plate 37 at place, since jolting plate 34 is inclination vibration, so that the nickel ground-slag on jolting plate 34 constantly tilts injection And electromagnetism is touched except 36 bottom of iron plate, iron powder and the higher nickel ground-slag of iron-content are attracted to electromagnetism except 36 bottom of iron plate, and Other nickel ground-slags drop on jolting plate 34 again under the action of bounce and gravity, and since 34 top of jolting plate is along length The longitudinal section in degree direction is serrated so that nickel ground-slag in impinging electromagnetic except after iron plate 36, can be gradually from the top of jolting plate 34 On the reclaiming plate 38 for moving to bottom, and eventually falling at the first deironing apparatus discharge port 22, pass through first time deironing apparatus The higher nickel ground-slag of the iron powder and iron-content effectively removed, subsequent nickel ground-slag enter in ball-milling device, the first ball grinding cylinder 43 When rotation, nickel ground-slag partial size is constantly milled to the filtering bore dia less than the first ball grinding cylinder 43, and in the convex of the first steel ball 45 Under playing 451, the filter hole of the first ball grinding cylinder 43 is constantly pushed through between the first ball grinding cylinder 43 and the second ball grinding cylinder 44, together When the ball milling in the first ball grinding cylinder 43, the electromagnetism of the second deironing apparatus 5 except iron prop 51 by iron powder when ball milling and iron-content compared with High nickel ground-slag further adsorbs away, and passes through the filter hole of the first ball grinding cylinder 43 to the first ball grinding cylinder 43 and the second ball grinding cylinder Nickel ground-slag between 44 is further ground under the action of the second steel ball 46 again, and finally from the ball on 44 side wall of the second ball grinding cylinder Mill apparatus discharge port 42 is discharged.

Claims (9)

1. the treatment process of nickel slag in a kind of nickel dreg concrete process, it is characterised in that: specific steps are as follows:
1) grinding micronization processes: being put into grinding for nickel slag first and remove in magnetic mechanism, carries out pre- grinding, for the first time except iron, whole grinding With second except ironworker makees, nickel ground-slag is obtained;Then nickel ground-slag is put into vacuum high temperature furnace, is heated to 200~300 DEG C, is adjusted 0.04~0.05Pa of vacuum degree is saved, 5~8min is kept;Then it is passed through nickel steam into vacuum high temperature furnace, control pressure 20~ 80KPa, and stir 10~20min;Later by the processing of nickel ground-slag dried and screened, the consistent nickel ground-slag of partial size is obtained;
2) hydration activity is handled: CaO, SiO are added first into the nickel ground-slag that step 1) obtains2And kaolin, stirring 10~ 15min is to being sufficiently mixed;Then mixture is placed in water heating kettle, and adds crystal seed, is carried out at hydro-thermal at 120~170 DEG C Reason, hydro-thermal time are 10~15 hours;Then cooling to water heating kettle, obtain the hyrate with gelling;
3) durability is handled: the hyrate that step 2 is obtained is put into high temperature and pressure hydro-thermal reaction kettle, and control temperature 250~ 350 DEG C, 10~15MPa of pressure, 3~5h of reaction time;It is subsequent to take out and use pure argon progress high pressure gas drying dry, divide 2~5 Secondary air-blowing, 1~3s every time, air-blowing number is more, and each air-blowing time is shorter;Finally it is air-cooled to room temperature.
2. the treatment process of nickel slag in a kind of nickel dreg concrete process according to claim 1, it is characterised in that: step Grinding described in rapid 1) grinding micronization processes includes feeding device (1), rolling device (2), the first deironing apparatus except magnetic mechanism (3), ball-milling device (4) and the second deironing apparatus (5), the rolling device feeding inlet (21) are arranged in feeding device discharge end (12) lower section, the first deironing apparatus feeding inlet (31) setting is below rolling device discharge port (22), the ball-milling device Feeding inlet (41) is connect with the first deironing apparatus discharge port (32).
3. the treatment process of nickel slag in a kind of nickel dreg concrete process according to claim 2, it is characterised in that: institute Stating the first deironing apparatus (3) includes inclined support panel (33), and the inclined support panel (33) is equipped with jolting plate (34), the shake Movable plate (34) bottom is connect by seismic mass (35) with inclined support panel (33), and upper end is connected with feeding plate (37), the inclination It is equipped with parallel with jolting plate (34) and adaptation electromagnetism above support plate (33) and removes iron plate (36), inclined support panel (33) lower end connects It is connected to reclaiming plate (38).
4. the treatment process of nickel slag in a kind of nickel dreg concrete process according to claim 3, it is characterised in that: institute It states the longitudinal section of jolting plate (34) top surface along its length to be serrated, and jolting plate (34) two sides are additionally provided with baffle.
5. the treatment process of nickel slag in a kind of nickel dreg concrete process according to claim 2, it is characterised in that: institute Stating ball-milling device (4) includes the first ball grinding cylinder (43) and the second ball grinding cylinder (44), and second ball grinding cylinder (44) is set in first Outside, one end of first ball grinding cylinder (43) is ball-milling device feeding inlet (41), second ball grinding cylinder (44) to ball grinding cylinder (43) Side wall be equipped with ball-milling device discharge port (42), be evenly equipped with filter hole on the side wall of first ball grinding cylinder (43), described the The first steel ball of grinding is contained in one ball grinding cylinder (43) and between the first ball grinding cylinder (43) and the second ball grinding cylinder (44) respectively (45) and the second steel ball (46) it, is evenly equipped on first steel ball (45) raised (451) compatible with filter hole, described first The end of ball grinding cylinder (43) and the second ball grinding cylinder (44) is respectively equipped with the first gear ring (47) and the second gear ring (48), first tooth Circle (47) and the second gear ring (48) are respectively cooperating with and are connected with first motor (49) and the second motor (50).
6. the treatment process of nickel slag in a kind of nickel dreg concrete process according to claim 5, it is characterised in that: institute Ball-milling device discharge port (42) are stated to go out to be equipped with filter screen.
7. the treatment process of nickel slag in a kind of nickel dreg concrete process according to claim 5, it is characterised in that: institute Stating the second deironing apparatus (5) includes electromagnetism except iron prop (51), and the electromagnetism removes iron prop (51) from the another of the first ball grinding cylinder (43) End is protruded into the first ball grinding cylinder (43).
8. the treatment process of nickel slag in a kind of nickel dreg concrete process according to claim 2, it is characterised in that: institute Stating feeding device (1) includes the conveyer belt (13) being obliquely installed.
9. the treatment process of nickel slag in a kind of nickel dreg concrete process according to claim 2, it is characterised in that: institute Stating rolling device (2) is roll squeezer.
CN201710272423.2A 2017-04-24 2017-04-24 The treatment process of nickel slag in a kind of nickel dreg concrete process Active CN107032644B (en)

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CN103643043B (en) * 2013-11-27 2015-11-18 山东理工大学 Nickel slag for comprehensive Application way
CN104030633B (en) * 2014-06-09 2016-01-20 扬州大学 A kind of nickel dreg concrete
CN104556921B (en) * 2014-12-29 2016-09-28 扬州大学 A kind of nickel ground-slag and flyash is utilized to mix the method preparing concrete again
CN104478368B (en) * 2014-12-29 2016-06-29 扬州大学 A kind of abrasion-proof concrete mixing nickel slag

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