CN108034811A - A kind of method for producing metallic nickel iron powder and diopside matter ground-slag - Google Patents
A kind of method for producing metallic nickel iron powder and diopside matter ground-slag Download PDFInfo
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- CN108034811A CN108034811A CN201711441436.4A CN201711441436A CN108034811A CN 108034811 A CN108034811 A CN 108034811A CN 201711441436 A CN201711441436 A CN 201711441436A CN 108034811 A CN108034811 A CN 108034811A
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- slag
- red mud
- diopside
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
- B03C1/015—Pretreatment specially adapted for magnetic separation by chemical treatment imparting magnetic properties to the material to be separated, e.g. roasting, reduction, oxidation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0063—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing waste materials, e.g. slags
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a kind of method for producing metallic nickel iron powder and diopside matter ground-slag, by obtaining metallic nickel iron powder and magnetic separation slag after pre-processing lateritic nickel ore and red mud, batch mixing pelletizing, reduction roasting, water quenching, drying metallized pellet and magnetic separation, then magnetic separation slag progress water logging removing sodium is handled to obtain diopside matter ground-slag.The production method of the present invention can efficiently extract the iron nickel resources in lateritic nickel ore, red mud, while obtain the diopside matter ground-slag available for multiple use, so as to achieve the purpose that comprehensive utilization of laterite nickel ore and red mud.
Description
Technical field
The present invention relates to metallurgical, inorganic non-metallic material and field of solid waste disposal, more particularly to a kind of production metal nickel-iron
The method of powder and diopside matter ground-slag.
Background technology
Lateritic nickel ore is also known as nickel ore, due to Fe2O3Content is higher, and appearance is into red therefore referred to as lateritic nickel ore, laterite nickel
Ore deposit is formed by the olivine basement rock based on nickeliferous, iron, magnesium Silicate Rocks through long-term weathering, and top is generally higher brown of alteration extent
Iron ore type, lower part are the relatively low garnierite (based on snake lithotype) of alteration extent, and centre is intermediate zone.Laterite is generally nickeliferous
1%-4%, nickel element are difficult to by beneficiation enrichment, the presence in the form of NiO in mineral due to nickel, it is difficult to pass through conventional smelting
The method (reverberatory smelting goes out ice nickel, then is electrolysed out metallic nickel) of nickel metallurgy is smelted, and it is larger to smelt difficulty.Current domestic and international sulphur
Change nickel minerals and be obtained for exploitation substantially, (nickel sulfide ore resource accounts for 30% or so, Lateritic Soil nickel since lateritic nickel ore ore reserve is big
Ore resources account for 70%), bury it is shallow, easily exploitation the characteristics of, the technique of extracting metals nickel becomes future development from lateritic nickel ore
Direction.
The characteristics of it is lateritic nickel ore slag that lateritic nickel ore, which carries iron accessory substance, and lateritic nickel ore slag is typical for high magnesium, high silicon, low aluminium,
Low calcium, since content of MgO is higher, stability is poor, causes lateritic nickel ore slag to be difficult to be utilized.
The pollution waste residue that red mud excludes when being aluminum i ndustry extraction aluminium oxide, average often produces 1 ton of aluminium oxide, subsidiary
The red mud of 1.0-2.0 tons of production.China is alumina producing big country, with the growth of aluminium oxide yield and the drop of bauxite grade
Low, the annual output of red mud will be also continuously increased, and China's aluminium oxide yield in 2012 is 42,140,000 tons, red mud discharge capacity about 5000-
60000000 tons, red mud there is no effective processing method, and the method still sealed up for safekeeping using land is disposed, and amount of storage total at present has surpassed
Cross 200,000,000 tons.The method sealed up for safekeeping using land can not only take substantial amounts of soil, but also due to the strong basicity that red mud has, once
Dam-break accident occurs for tailing dam, huge harm will be caused to personal safety as well as the property safety and ecological environment.
Alkalinity has strong basicity between 5-7% in red mud, and the comprehensive utilization to red mud brings detrimental effect, because
This alkali how removed in red mud becomes one step of key to red mud comprehensive utilization.
Red mud slag is the accessory substance that red mud carries iron, main chemical compositions CaO, SiO2、Al2O3、Na2O etc., due to Na2O's
In the presence of causing red mud slag to have many restrictions in recycling.
Diopside ((Ca, Mg) OMgO2SiO2) it is one kind common in pyroxene, belong to monoclinic system, it belongs to silicic acid
Salt mineral, for content of magnesium up to more than 18%, relatively low fusing point is 1320 DEG C, is commonly used to reduce the sintering temperature of ceramics in Production of Ceramics
Degree, due in lateritic nickel ore slag the characteristics of high magnesium, high silicon, low aluminium, low calcium and the characteristics of red mud slag high calcium, high alumina, high silicon, low magnesium
It is combined, is sintered during haydite is produced since reaction generation diopside ore mutually can significantly reduce haydite in sintering process
Temperature.
The characteristics of lateritic nickel ore slag is typical is high magnesium, high silicon, low aluminium, low calcium, and since content of MgO is higher, stability is poor,
Lateritic nickel ore slag is caused to be difficult to be utilized.Red mud slag is the accessory substance that red mud carries iron, main chemical compositions CaO, SiO2、Al2O3、
Na2O etc., due to Na2The presence of O, causes red mud slag to have many restrictions in recycling.
The content of the invention
In view of the deficiencies of the prior art, it is an object of the invention to provide one kind production metallic nickel iron powder and diopside matter slag
The method of powder.
To achieve these goals, the present invention uses following technical scheme：
The present invention provides a kind of method for producing metallic nickel iron powder and diopside matter ground-slag, comprises the following steps：
(1) lateritic nickel ore and red mud are pre-processed
Lateritic nickel ore and red mud are dried respectively, crushed, fine grinding, respectively obtains lateritic nickel ore powder and red mud powder, and
The two is mixed to get the second mixed material；
(2) batch mixing pelletizing
Second mixed material, coal dust and additive input mixing device are mixed, obtain the first mixed material,
First mixed material is put into palletizing device pelletizing, obtains pelletizing；
(3) reduction roasting
Reduction roasting processing is carried out in the pelletizing input reduction roasting device that step (2) is obtained, obtains metallized pellet；
(4) water quenching, drying metallized pellet
To carry out Water Quenching in metallized pellet that step (3) obtains input granulating unit, then to Water Quenching after
Metallized pellet be dried, obtain dry metallized pellet；
(5) magnetic separation
The metallized pellet for the drying that broken and fine milling step (4) obtains, then puts into magnetic plant, after magnetic separation respectively
Obtain metallic nickel iron powder and magnetic separation slag；
(6) water logging removing sodium
In the magnetic separation slag input water logging removing sodium device that step (5) is obtained, water logging removing sodium clear liquid and diopside are respectively obtained
Matter water logging slag, it is that can obtain diopside matter ground-slag that diopside matter water logging slag, which is dried, is crushed.
Further, in second mixed material, the mass ratio of the lateritic nickel ore powder and the red mud powder is (60-
70)∶(30-40)。
Further, in first mixed material, second mixed material, coal dust, the mass ratio of additive are
100∶(10-20)∶(2-5)。
Further, CaO, MgO and SiO in first mixed material2Mass ratio be (0.2-0.5): (0.3-
0.6): 1, and (Na2O+K2) and Al O2O3Mass ratio≤0.2: 1.
Further, the temperature of reduction roasting is 1200-1400 DEG C, time 30-120min.
Further, in step (6), the liquid-solid ratio of water logging removing sodium processing is (4-6): 1.
Further, water soaking temperature is 80-100 DEG C, and the water logging time is 1-4h.
Further, each component of the lateritic nickel ore and its content are：Ni >=1.0wt%, TFe >=15wt%,
30wt%≤SiO2≤ 45wt%, 15wt%≤MgO≤25wt%.
Further, each component of the red mud and its content are：TFe >=15wt%, CaO >=40wt%, 8wt%≤
Al2O3≤ 20wt%, 10wt%≤SiO2≤ 20wt%, 2wt%≤Na2O+K2O≤5wt%.
Further, a diameter of 10-40mm of the pelletizing in step (2).
Compared with prior art, advantageous effects of the invention are：
(1) raw material usability is solved the problems, such as.Lateritic nickel ore and red mud are to be difficult to integrated treatment, while lateritic nickel ore has
There is the characteristics of high magnesium, high silicon, low aluminium, low calcium, red mud has the characteristics that low silicon, high calcium, high alumina, high sodium, with reference to two kinds of mineral
Feature, the method announced using the present invention, can both obtain the metallic nickel iron powder of high-quality or can obtain diopside matter ground-slag, should
Ground-slag can be used as good Production of Ceramics raw material.
(2) main reaction all carries out in reduction roasting device so that technological process compact efficient, reaction temperature compared with
Low, energy consumption is relatively low.
Brief description of the drawings
Fig. 1 is the structure diagram of the device for producing metallic nickel iron powder and diopside matter ground-slag of the present invention；
Fig. 2 is the flow diagram of the method for producing metallic nickel iron powder and diopside matter ground-slag of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right with reference to embodiment and attached drawing
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
As shown in Figure 1, the production metallic nickel iron powder of the present invention and the device of diopside matter ground-slag, including mineral pretreatment dress
Put, batch mixing palletizing device, reduction roasting device, granulating unit, concentration equipment and water logging removing sodium device, wherein, mineral are located in advance
The material outlet of reason device is connected to the material inlet of batch mixing palletizing device；The material outlet of batch mixing palletizing device is connected to reduction
The material inlet of calciner；The material outlet of reduction roasting device is connected to the material inlet of granulating unit；Granulating unit
Material outlet be connected to the material inlet of concentration equipment；The material outlet of concentration equipment is connected to the material of water logging removing sodium device
Entrance.
In a preferred embodiment, mineral pretreatment unit includes lateritic nickel ore drying device, lateritic nickel ore breaker
With lateritic nickel ore fine grinding device, the material that the material outlet of lateritic nickel ore drying device is connected to lateritic nickel ore breaker enters
Mouthful, the material inlet of lateritic nickel ore breaker is connected to the material inlet of lateritic nickel ore fine grinding device.Mineral pretreatment unit
Further include red mud drying device, red mud breaker and red mud fine grinding device, the material outlet of red mud drying device is connected to red
The material inlet of mud breaker, the material outlet of red mud breaker are connected to the material inlet of red mud fine grinding device.Laterite
Nickel minerals drying device, red mud drying device can be drying boxes, and lateritic nickel ore breaker, red mud breaker can be jaw
Crusher, lateritic nickel ore fine grinding device, red mud fine grinding device can be ball mills.
In a preferred embodiment, batch mixing palletizing device claims including lateritic nickel ore meausring apparatus, red mud meausring apparatus, coal dust
Device, additive meausring apparatus, mixing device, palletizing device and pelletizing drying device are measured, wherein, lateritic nickel ore fine grinding dress
The material outlet put is connected to the material inlet of lateritic nickel ore meausring apparatus；The material outlet of red mud fine grinding device is connected to red mud
The material inlet of meausring apparatus；The material outlet of lateritic nickel ore meausring apparatus, the material outlet of red mud meausring apparatus, coal dust weigh
Material outlet, the material outlet of additive meausring apparatus of device are respectively communicated to the material inlet of mixing device；Mixing device
Material outlet be connected to the material inlet of palletizing device；The material outlet of palletizing device is connected to the material of pelletizing drying device
Entrance；The material outlet of pelletizing drying device is connected to the material inlet of reduction roasting device.
In a preferred embodiment, concentration equipment includes fine grinding equipment and magnetic plant, and the material outlet of granulating unit connects
Pass to the material inlet of fine grinding equipment；The material outlet of fine grinding equipment is connected to the material inlet of magnetic plant.
In a preferred embodiment, drying unit is further included, the material outlet of granulating unit is connected to the thing of drying unit
Expect entrance, the material outlet of drying unit is connected to the material inlet of fine grinding equipment.
In a preferred embodiment, water logging removing sodium device includes water logging removing sodium reactor and filtration apparatus, magnetic plant
Magnetic separation slag outlet is to the material inlet of water logging removing sodium reactor, and water logging removing sodium reactor further includes agitating device and heating fills
Put；The material outlet of water logging removing sodium reactor is connected to the material inlet of filtration apparatus.
As shown in Fig. 2, the present invention also provides a kind of method for producing metallic nickel iron powder and diopside matter ground-slag, including it is following
Step：
(1) lateritic nickel ore and red mud are pre-processed
Lateritic nickel ore and red mud generally existing water content are larger, and particle is thicker and non-uniform shortcoming, thus can not be direct
Batch mixing and pelletizing processing are carried out, it is necessary to be pre-processed respectively to it to reach the mesh met into batch mixing pelletizing processing requirement
's.
To achieve these goals, lateritic nickel ore raw ore is put into lateritic nickel ore drying device and be dried, Zhi Houzhuan
Enter and crushed in lateritic nickel ore breaker, be finally transferred in lateritic nickel ore fine grinding device and carry out fine grinding, obtain lateritic nickel ore
Powder.Similarly, red mud raw ore is put into red mud drying device and be dried, be transferred in red mud breaker and broken afterwards
It is broken, finally it is transferred in red mud fine grinding device and carries out fine grinding, obtains red mud powder.
Wherein, each component of lateritic nickel ore and its content include：Ni >=1.0wt%, TFe >=15wt%, 30wt%≤
SiO2≤ 45wt%, 15wt%≤MgO≤25wt%；The each component and its content of red mud include：TFe >=15wt%, CaO >=
40wt%, 8wt%≤Al2O3≤ 20wt%, 10wt%≤SiO2≤ 20wt%, 2wt%≤Na2O+K2O≤5wt%.
The drying temperature of lateritic nickel ore and red mud is 105-120 DEG C, drying time 2-24h, the material moisture after drying
Content≤0.5wt%.Preferable fine grinding scheme is dry type ball milling or rod milling 15-30min, obtained lateritic nickel ore powder and red mud powder
Granularity be less than the inventories of 200 mesh and account for more than the 90wt% of overall inventory.
(2) batch mixing pelletizing
Lateritic nickel ore powder, red mud powder, coal dust and additive that step (1) obtains are put into lateritic nickel ore powder respectively and weigh dress
Put, red mud powder meausring apparatus, coal dust meausring apparatus and additive meausring apparatus, by each material after weighing put into mixing device into
Row mixing, obtains the first mixed material, and the first mixed material is put into palletizing device pelletizing, obtains pelletizing；Then will obtain
Pelletizing input pelletizing drying device is dried.
Wherein, the mixed material that lateritic nickel ore powder and red mud powder form is denoted as the second mixed material.Second mixed material
Composition be：Lateritic nickel ore powder and the mass ratio of red mud powder are (60-70): (30-40), and in the first mixed material, second is mixed
Compound material, coal dust, the mass ratio of additive are 100: (10-20): (2-5).CaO, MgO and SiO in first mixed material2's
Mass ratio is (0.2-0.5): (0.3-0.6): 1, and (Na2O+K2) and Al O2O3Mass ratio≤0.2: 1.
In a preferred embodiment, additive can be inorganic binder such as bentonite etc., or organic binder bond as pasted in advance
Change the one or more in starch, sodium carboxymethylcellulose etc..Disc balling machine pelletizing or ball press pressure may be selected in pellet forming process
Ball obtains pelletizing, a diameter of 10-40mm of control pelletizing.
(3) reduction roasting
Carried out in the pelletizing input reduction roasting device such as rotary hearth furnace for the drying that step (2) is obtained at reduction roasting
Reason, obtains metallized pellet.The temperature of reduction roasting is 1200-1400 DEG C, time 30-120min.Pelletizing is in roasting process
In main following reaction occurs：
Fe2O3+ C=Fe+CO (iron reduction reaction)
NiO+C=Ni+CO (nickel reduction reaction)
Na2O+Al2O3+ C=NaAlO2(sodium metaaluminate)+CO (NaAlO2Water is dissolved in, can be taken off in follow-up water logging removing sodium process
Go out)
CaO+MgO+SiO2=(CaO, MgO) MgOSiO2(diopside)
Reducing roasting process makes the ferriferous oxide in raw material be reduced into metallic iron, and nickel oxide is reduced into metallic nickel, alkali gold
Belong to oxide and Al2O3Reaction generation sodium metaaluminate, CaO, MgO, SiO2Reaction generation diopside phase.
(4) water quenching, drying metallized pellet
Directly the metallized pellet that step (3) obtains is put into granulating unit and carries out Water Quenching, then by water quenching
It is dried in metallized pellet input drying unit after reason, obtains dry metallized pellet.
(5) magnetic separation
The metallized pellet input fine grinding equipment for the drying that step (4) is obtained carries out fine grinding, obtains fine grinding material, then
Fine grinding material is put into magnetic plant, magnetic separation is carried out by the way of dry type magnetic separation, metallic nickel iron powder is respectively obtained after magnetic separation
With magnetic separation slag.Metallic nickel iron powder exports through metallic nickel iron powder and discharges and collect, and magnetic separation slag is exported through magnetic separation slag and discharged.
(6) water logging removing sodium
Sodium salt content is excessive, it is necessary to removing sodium processing be carried out to it, to obtain removing sodium in the magnetic separation slag obtained after magnetic separation
Diopside matter slag.
The magnetic separation slag that fine milling step (5) obtains, is then put into water logging removing sodium reactor, under conditions of stirring into
Row Soaking treatment, will be filtered in solution and sediment input filtration apparatus after the completion of water logging, solid-liquor separation is made by the way of suction filtration,
Water logging removing sodium clear liquid and diopside matter water logging slag are respectively obtained, water logging removing sodium clear liquid is discharged and collected through outlet, diopside matter
Water logging slag is discharged and collected through outlet, is then baked to, broken be can obtain diopside matter ground-slag.Wherein, water logging removing sodium
The liquid-solid ratio of processing is (4-6): 1, water soaking temperature is 80-100 DEG C, and the water logging time is 1-4h.
Embodiment 1
By lateritic nickel ore, (each component and content are：Ni 1.25wt%, TFe 26.8wt%, SiO238.6wt%, MgO
21.2wt%), (each component and content are red mud：TFe 18.6wt%, CaO 42wt%, Al2O318.4wt%, SiO2
16.5wt%, Na2O+K2O 3.6wt%), 24h is dried at 105 DEG C, the material after drying carries out fine grinding and handles to obtain laterite nickel
Miberal powder and red mud powder.Lateritic nickel ore powder and red mud powder are mixed into the second mixed material of composition, the second mixed material composition is：Laterite
Nickel minerals powder is 60 parts by weight, and red mud powder is 40 parts by weight, is according to mass ratio by the second mixed material, reduction coal dust, bentonite
Be mixed to get first mixed material at 100: 11: 4, and the first mixed material input disc balling machine pelletizing is obtained pelletizing, control ball
The a diameter of 10mm of group.Control CaO, MgO, SiO in the first mixed material2Mass ratio be 0.5: 0.5: 1, while control (Na2O
+K2) and Al O2O3Mass ratio be 0.15: 1.Pelletizing enters rotary hearth furnace after drying and carries out reduction roasting processing, reduction roasting
Temperature be 1400 DEG C, time 30min, obtains metallized pellet after the completion of reduction roasting, when metallized pellet is come out of the stove directly into
Row Water Quenching.Dry metallized pellet is obtained after water quenching and drying, is crushed rear fine grinding and using the side of dry type magnetic separation
Formula magneticly elects metallic nickel iron powder and magnetic separation slag.Magnetic separation slag enters at water logging removing sodium device progress water logging removing sodium after again passing by fine grinding
Reason, obtains water logging removing sodium clear liquid and diopside matter water logging slag, the liquid-solid ratio of water logging removing sodium processing is 4: 1, water soaking temperature 100
DEG C, the water logging time is 1.5h, needs to be stirred solution during water logging.Consolidate liquid using the method filtered after the completion of water logging
Separation, dry crushing obtaining diopside matter ground-slag to solid after the completion of separation.
The present embodiment can not only extract nickel, iron resource in lateritic nickel ore and red mud, in combination with the high magnesium of lateritic nickel ore,
The characteristics of the characteristics of high silicon, low aluminium, low calcium and the low silicon of red mud, high calcium, high alumina, high sodium, obtains the diopside available for multiple use
Matter ground-slag, for example, diopside matter ground-slag can be as the original of the products such as production diopside type cast stone, ceramics, haydite, devitrified glass
Material, so as to achieve the purpose that comprehensive utilization of laterite nickel ore and red mud.
Embodiment 2
By lateritic nickel ore, (each component and content are：Ni 1.16wt%, TFe 19.6wt%, SiO242.3wt%, MgO
17.65wt%), (each component and content are red mud：TFe 21wt%, CaO 41.2wt%, Al2O311.4wt%, SiO2
15.4wt%, Na2O+K2O 2.6wt%), 12h is dried at 110 DEG C, the material after drying carries out fine grinding and handles to obtain laterite nickel
Miberal powder and red mud powder.Lateritic nickel ore powder and red mud powder are mixed into the second mixed material of composition, the second mixed material composition is：Laterite
Nickel minerals powder is 65 weight powder, and red mud powder is 35 parts by weight, is according to mass ratio by the second mixed material, reduction coal dust, bentonite
Be mixed to get first mixed material at 100: 15: 3, and the first mixed material input disc balling machine pelletizing is obtained pelletizing, control ball
The a diameter of 40mm of group.Control CaO, MgO, SiO in the first mixed material2Mass ratio be 0.3: 0.6: 1, while control (Na2O
+K2) and Al O2O3Mass ratio be 0.11: 1.Pelletizing enters rotary hearth furnace after drying and carries out reduction roasting processing, reduction roasting
Temperature be 1300 DEG C, time 90min, obtains metallized pellet after the completion of reduction roasting, when metallized pellet is come out of the stove directly into
Row Water Quenching.Dry metallized pellet is obtained after water quenching and drying, is crushed rear fine grinding and using the side of dry type magnetic separation
Formula magneticly elects metallic nickel iron powder and magnetic separation slag.Magnetic separation slag enters at water logging removing sodium device progress water logging removing sodium after again passing by fine grinding
Reason, obtains water logging removing sodium clear liquid and diopside matter water logging slag, and the liquid-solid ratio of water logging removing sodium processing is 5: 1, and water soaking temperature is 90 DEG C,
The water logging time is 2h, needs to be stirred solution during water logging.Solid-liquor separation is made using the method filtered after the completion of water logging,
Solid dry crushing after the completion of separation and obtains diopside matter ground-slag.
The present embodiment can not only extract nickel, iron resource in lateritic nickel ore and red mud, in combination with the high magnesium of lateritic nickel ore,
The characteristics of the characteristics of high silicon, low aluminium, low calcium and the low silicon of red mud, high calcium, high alumina, high sodium, obtains the diopside available for multiple use
Matter ground-slag, for example, diopside matter ground-slag can be as the original of the products such as production diopside type cast stone, ceramics, haydite, devitrified glass
Material, so as to achieve the purpose that comprehensive utilization of laterite nickel ore and red mud.
Embodiment 3
By lateritic nickel ore, (each component and content are：Ni 1.34wt%, TFe 24.6wt%, SiO238.6wt%, MgO
22.1wt%), (each component and content are red mud：TFe 17.5wt%, CaO 43.2wt%, Al2O313.4wt%, SiO2
17.8wt%, Na2O+K2O 4.6wt%), 2h is dried at 120 DEG C, the material after drying carries out fine grinding and handles to obtain laterite nickel
Miberal powder and red mud powder.Lateritic nickel ore powder and red mud powder are mixed into the second mixed material of composition, the second mixed material composition is：Laterite
Nickel minerals powder is 70 weight powder, and red mud powder is 30 parts by weight, by the second mixed material, reduction coal dust, pre-gelatinized starch according to quality
Than being mixed to get the first mixed material for 100: 18: 4.4, the first mixed material input disc balling machine pelletizing is obtained into pelletizing,
Control a diameter of 15mm of pelletizing.Control CaO, MgO, SiO in the first mixed material2Mass ratio be 0.5: 0.4: 1, same to time control
Make (Na2O+K2) and Al O2O3Mass ratio be 0.12: 1.Pelletizing enters rotary hearth furnace after drying and carries out reduction roasting processing,
Reduction roasting temperature is 1200 DEG C, time 120min, metallized pellet is obtained after the completion of reduction roasting, metallized pellet is come out of the stove
When directly carry out Water Quenching.Dry metallized pellet is obtained after water quenching and drying, rear fine grinding is crushed and uses dry type
The mode of magnetic separation magneticly elects metallic nickel iron powder and magnetic separation slag.Magnetic separation slag enters water logging removing sodium device progress water after again passing by fine grinding
Removing sodium processing is soaked, obtains water logging removing sodium clear liquid and diopside matter water logging slag, the liquid-solid ratio of water logging removing sodium processing is 6: 1, water logging temperature
Spend for 80 DEG C, the water logging time is 3.5h, needs to be stirred solution during water logging.Using the method filtered after the completion of water logging
Make solid-liquor separation, dry crushing obtaining diopside matter ground-slag after the completion of separation to solid.
The present embodiment can not only extract nickel, iron resource in lateritic nickel ore and red mud, in combination with the high magnesium of lateritic nickel ore,
The characteristics of the characteristics of high silicon, low aluminium, low calcium and the low silicon of red mud, high calcium, high alumina, high sodium, obtains the diopside available for multiple use
Matter ground-slag, for example, diopside matter ground-slag can be as the original of the products such as production diopside type cast stone, ceramics, haydite, devitrified glass
Material, so as to achieve the purpose that comprehensive utilization of laterite nickel ore and red mud.
Embodiment 4
By lateritic nickel ore, (each component and content are：Ni 1.0wt%, TFe 15wt%, SiO230wt%, MgO
15wt%), (each component and content are red mud：TFe 15wt%, CaO 40wt%, Al2O38wt%, SiO210wt%, Na2O
+K2O 2wt%), 24h is dried at 105 DEG C, the material after drying carries out fine grinding and handles to obtain lateritic nickel ore powder and red mud powder.
Lateritic nickel ore powder and red mud powder are mixed into the second mixed material of composition, the second mixed material composition is：Lateritic nickel ore powder is 65 weights
Measure part, red mud powder be 35 parts by weight, by the second mixed material, reduction coal dust, sodium carboxymethylcellulose according to mass ratio be 100:
Be mixed to get first mixed material at 10: 2, the first mixed material input disc balling machine pelletizing is obtained pelletizing, control pelletizing is straight
Footpath is 30mm.Control CaO, MgO, SiO in the first mixed material2Mass ratio be 0.2: 0.3: 1, while control (Na2O+
K2) and Al O2O3Mass ratio be 0.2: 1.Pelletizing enters rotary hearth furnace after drying and carries out reduction roasting processing, reduction roasting temperature
Spend for 1400 DEG C, time 30min, obtains metallized pellet after the completion of reduction roasting, directly carried out when metallized pellet is come out of the stove
Water Quenching.Dry metallized pellet is obtained after water quenching and drying, is crushed rear fine grinding and by the way of dry type magnetic separation
Magneticly elect metallic nickel iron powder and magnetic separation slag.Magnetic separation slag enters at water logging removing sodium device progress water logging removing sodium after again passing by fine grinding
Reason, obtains water logging removing sodium clear liquid and diopside matter water logging slag, the liquid-solid ratio of water logging removing sodium processing is 4: 1, water soaking temperature 100
DEG C, the water logging time is 1h, needs to be stirred solution during water logging.Liquid is set to consolidate point using the method filtered after the completion of water logging
From carrying out that drying is broken to obtain diopside matter ground-slag after the completion of separation to solid.
The present embodiment can not only extract nickel, iron resource in lateritic nickel ore and red mud, in combination with the high magnesium of lateritic nickel ore,
The characteristics of the characteristics of high silicon, low aluminium, low calcium and the low silicon of red mud, high calcium, high alumina, high sodium, obtains the diopside available for multiple use
Matter ground-slag, for example, diopside matter ground-slag can be as the original of the products such as production diopside type cast stone, ceramics, haydite, devitrified glass
Material, so as to achieve the purpose that comprehensive utilization of laterite nickel ore and red mud.
Embodiment 5
By lateritic nickel ore, (each component and content are：Ni 1.31wt%, TFe 25.6wt%, SiO237.3wt%, MgO
19.65wt%), (each component and content are red mud：TFe 20wt%, CaO 42.8wt%, Al2O317.6wt%, SiO2
18.4wt%, Na2O+K2O 2.9wt%), 12h is dried at 110 DEG C, the material after drying carries out fine grinding and handles to obtain laterite nickel
Miberal powder and red mud powder.Lateritic nickel ore powder and red mud powder are mixed into the second mixed material of composition, the second mixed material composition is：Laterite
Nickel minerals powder is 65 weight powder, and red mud powder is 35 parts by weight, is according to mass ratio by the second mixed material, reduction coal dust, bentonite
Be mixed to get first mixed material at 100: 20: 5, and the first mixed material input disc balling machine pelletizing is obtained pelletizing, control ball
The a diameter of 40mm of group.Control CaO, MgO, SiO in the first mixed material2Mass ratio be 0.5: 0.6: 1, while control (Na2O
+K2) and Al O2O3Mass ratio be 0.2: 1.Pelletizing enters rotary hearth furnace after drying and carries out reduction roasting processing, reduction roasting
Temperature be 1300 DEG C, time 90min, obtains metallized pellet after the completion of reduction roasting, when metallized pellet is come out of the stove directly into
Row Water Quenching.Dry metallized pellet is obtained after water quenching and drying, is crushed rear fine grinding and using the side of dry type magnetic separation
Formula magneticly elects metallic nickel iron powder and magnetic separation slag.Magnetic separation slag enters at water logging removing sodium device progress water logging removing sodium after again passing by fine grinding
Reason, obtains water logging removing sodium clear liquid and diopside matter water logging slag, and the liquid-solid ratio of water logging removing sodium processing is 5: 1, and water soaking temperature is 80 DEG C,
The water logging time is 4h, needs to be stirred solution during water logging.Solid-liquor separation is made using the method filtered after the completion of water logging,
Solid dry crushing after the completion of separation and obtains diopside matter ground-slag.
The present embodiment can not only extract nickel, iron resource in lateritic nickel ore and red mud, in combination with the high magnesium of lateritic nickel ore,
The characteristics of the characteristics of high silicon, low aluminium, low calcium and the low silicon of red mud, high calcium, high alumina, high sodium, obtains the diopside available for multiple use
Matter ground-slag, for example, diopside matter ground-slag can be as the original of the products such as production diopside type cast stone, ceramics, haydite, devitrified glass
Material, so as to achieve the purpose that comprehensive utilization of laterite nickel ore and red mud.
Embodiment described above only expresses embodiments of the present invention, its description is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
Enclose.
Claims (10)
- A kind of 1. method for producing metallic nickel iron powder and diopside matter ground-slag, it is characterised in that comprise the following steps：(1) lateritic nickel ore and red mud are pre-processedLateritic nickel ore and red mud are dried respectively, crushed, fine grinding, respectively obtains lateritic nickel ore powder and red mud powder, and by two Person is mixed to get the second mixed material；(2) batch mixing pelletizingSecond mixed material, coal dust and additive input mixing device are mixed, the first mixed material is obtained, by the One mixed material puts into palletizing device pelletizing, obtains pelletizing；(3) reduction roastingReduction roasting processing is carried out in the pelletizing input reduction roasting device that step (2) is obtained, obtains metallized pellet；(4) water quenching, drying metallized pelletThe metallized pellet that step (3) obtains is put into granulating unit and carries out Water Quenching, then to the gold after Water Quenching Belong to pellet to be dried, obtain dry metallized pellet；(5) magnetic separationThe metallized pellet for the drying that broken and fine milling step (4) obtains, then puts into magnetic plant, is respectively obtained after magnetic separation Metallic nickel iron powder and magnetic separation slag；(6) water logging removing sodiumIn the magnetic separation slag input water logging removing sodium device that step (5) is obtained, water logging removing sodium clear liquid and diopside matter water are respectively obtained Phase analysis, it is that can obtain diopside matter ground-slag that diopside matter water logging slag, which is dried, is crushed.
- 2. according to the method described in claim 1, it is characterized in that, in second mixed material, the lateritic nickel ore powder and The mass ratio of the red mud powder is (60-70): (30-40).
- 3. according to the method described in claim 1, it is characterized in that, in first mixed material, second mixture Material, coal dust, the mass ratio of additive are 100: (10-20): (2-5).
- 4. according to the method described in claim 1, it is characterized in that, CaO, MgO and SiO in first mixed material2Matter It is (0.2-0.5): (0.3-0.6) to measure ratio: 1, and (Na2O+K2) and Al O2O3Mass ratio≤0.2: 1.
- 5. according to the method described in claim 1, it is characterized in that, the temperature of reduction roasting is 1200-1400 DEG C, the time is 30-120min。
- 6. according to the method described in claim 1, it is characterized in that, in step (6), the liquid-solid ratio of water logging removing sodium processing is (4-6)∶1。
- 7. according to the method described in claim 1, it is characterized in that, in step (6), water soaking temperature is 80-100 DEG C, water logging Time is 1-4h.
- 8. according to the method described in claim 1, it is characterized in that, each component and its content of the lateritic nickel ore are：Ni≥ 1.0wt%, TFe >=15wt%, 30wt%≤SiO2≤ 45wt%, 15wt%≤MgO≤25wt%.
- 9. according to the method described in claim 1, it is characterized in that, each component and its content of the red mud are：TFe≥ 15wt%, CaO >=40wt%, 8wt%≤Al2O3≤ 20wt%, 10wt%≤SiO2≤ 20wt%, 2wt%≤Na2O+K2O≤ 5wt%.
- 10. according to the method described in claim 1, it is characterized in that, a diameter of 10-40mm of the pelletizing in step (2).
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