CN106755953A - The processing method of lateritic nickel ore - Google Patents
The processing method of lateritic nickel ore Download PDFInfo
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- CN106755953A CN106755953A CN201611026042.8A CN201611026042A CN106755953A CN 106755953 A CN106755953 A CN 106755953A CN 201611026042 A CN201611026042 A CN 201611026042A CN 106755953 A CN106755953 A CN 106755953A
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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
- C22B1/02—Roasting processes
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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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
-
- 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/005—Preliminary treatment of ores, e.g. by roasting or by the Krupp-Renn process
-
- 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
- C22B23/023—Obtaining nickel or cobalt by dry processes with formation of ferro-nickel or ferro-cobalt
-
- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
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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
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention discloses a kind of integrated conduct method of lateritic nickel ore.The method includes：To be mixed after the high ferro lateritic nickel ore, low iron lateritic nickel ore, reducing agent and additive drying, broken, screening, to obtain mixed material；The mixed material is carried out into forming processes, to obtain molding materials；The molding materials are carried out into reduction roasting treatment, to obtain metallized pellet；And the metallized pellet hot charging is entered into molten point of stove of combustion gas smelted, dilval and smelted furnace cinder are finally given, smelted furnace cinder can be used as cement raw material.The present invention carries out mixed processing by by high ferro, low iron lateritic nickel ore, and it is low to efficiently solve high ferro lateritic nickel ore pyrogenic attack nickel grade, the problem of high energy consumption, and improves with the comprehensive utilization ratio of mining area lateritic nickel ore.
Description
Technical field
The present invention relates to field of metallurgy, in particular it relates to the integrated conduct method of lateritic nickel ore.
Background technology
Nickel is a kind of important non-ferrous metal, mainly has lateritic nickel ore and nickel sulfide ore to smelt.Due to nickel in recent years
Consumption be continuously increased and nickel sulfide ore reserves are constantly reduced, the exploitation of nickel laterite is increasingly subject to pay attention to.Lateritic nickel ore
The adopted part in mining area is generally divided into 3 layers：Limonite layer, humus layer and transition zone.Humus layer is located at the bottom in mineral deposit, due to wind
Change enrichment, many silicon, many magnesium, low iron, cobalt, nickel content are higher, also referred to as garnirite；Limonite type layer is located at mineral deposit
Top, due to the result of weathering eluviation, many iron lack silicon, less magnesium, and nickel content is relatively low, but amount containing cobalt is higher.
At present, the processing method of lateritic nickel ore mainly has two kinds：Pyrogenic process and wet method.Pyrogenic process respectively has advantage and disadvantage with wet method：Fire
Method PROCESS FOR TREATMENT laterite nickel ore and producing ferronickel alloy has the advantages that flow is short, efficiency high, but energy consumption is higher, in production cost
Energy consumption cost accounts for more than 65%, and current thermal process mainly processes high-grade lateritic nickel ore.Wet processing is low in mainly processing
Grade lateritic nickel ore, its cost is lower than pyrogenic process, but the technics comparing complexity of wet-treating, long flow path, process conditions will to equipment
Ask high.In the prior art, corresponding processing method is selected generally directed to different mining area layers：Humus layer preferably uses pyrogenic process
Metallurgical technology treatment, the slag that production ferronickel is produced can be used for construction material and production chemical fertilizer；Limonite layer preferably uses wet method smelting
Gold process treatment, the slag that smelting ferronickel is produced is used for the production of steel；Ore in intermediate layer can both use pyrogenic process
It is metallurgical, it would however also be possible to employ hydrometallurgical processes.
It is this to be needed using different handling process with the different types of lateritic nickel ore that mining area is present for lateritic nickel ore
Way, cause cost of investment high, the wasting of resources, complex process.It is at present to use wet method especially for high ferro lateritic nickel ore more
PROCESS FOR TREATMENT, technics comparing complexity, long flow path, process conditions are high to equipment requirement, there are nickel product when being smelted using fire reduction
Low, the energy consumption problem high in position, is art technology thus, it is desirable to develop new pyrogenic process integrated treatment lateritic nickel ore technique
One of personnel's problem urgently to be resolved hurrily.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, present invention aim at carrying
Go out a kind of integrated conduct method of lateritic nickel ore, solution high ferro iron lateritic nickel ore pyrogenic attack nickel grade is low, consume energy problem high,
Improve with the comprehensive utilization ratio of mining area exploitation lateritic nickel ore.
According to an aspect of the present invention, the invention provides a kind of integrated conduct method of lateritic nickel ore.According to this hair
Bright embodiment, the method includes：By the high ferro lateritic nickel ore, low iron lateritic nickel ore, reducing agent and additive drying, break
Mixed after broken, screening, to obtain mixed material；The mixed material is carried out into forming processes, to obtain article shaped
Material；The molding materials are carried out into reduction roasting treatment, to obtain metallized pellet；And by the metallized pellet hot charging
Enter molten point of stove of combustion gas and carry out smelting to finally give dilval and smelted furnace cinder, smelted furnace cinder can be used as cement raw material.
In other words, the present invention discloses a kind of processing method of lateritic nickel ore, including：
1) mixed material is prepared：By high ferro lateritic nickel ore, low iron lateritic nickel ore, reducing agent and additive distinguish drying,
Mix after broken, screening, obtain mixed material；
2) material forming：The mixed material is carried out into forming processes, molding materials are obtained；
3) reduction roasting：The molding materials are carried out into reduction roasting, metallized pellet is obtained；
4) a point smelting is melted：Metallized pellet hot melt point is smelted, dilval and smelted furnace cinder is obtained.
In addition, the processing method of lateritic nickel ore according to the above embodiment of the present invention can also have following additional technology
Feature：
Embodiments in accordance with the present invention, the iron-holder of the high ferro lateritic nickel ore is higher than 40%, the low iron lateritic nickel ore
Iron-holder be less than 15%.
Embodiments in accordance with the present invention, when mixed material is prepared, according to the high ferro lateritic nickel ore and low iron oxide red
The nickel content of native nickel minerals, takes proper ratio dispensing after calculating, in control mixed material, nickel content accounts for low iron lateritic nickel ore and high ferro
The 1.4%-1.8% of lateritic nickel ore total amount, you can meet requirement of the invention.
Embodiments in accordance with the present invention, the reducing agent and flux are respectively by accounting for the low iron lateritic nickel ore and the height
The 10%-30% of iron lateritic nickel ore gross mass, 8%-15% are mixed.
Embodiments in accordance with the present invention, the reducing agent is reduction coal, and thus, the low cost of reducing agent, reactivity is high,
Reduction effect is good.
Embodiments in accordance with the present invention, the flux is, selected from least one in lime, lime stone and carbide slag, to make
Smelting temperature it is low, the time is short, smelt energy consumption it is small, nickel recovery is high.
Preferably, the temperature of the reduction roasting is 1150-1300 DEG C, and roasting time is 30-50 minutes；Roasting selection exists
Carried out in regenerative rotary hearth furnace.
Before the reduction roasting step, also including dry the molding materials the step of.The molten point of smelting step
Carried out in molten point of stove of combustion gas.The molten point of smelting step gained smelted furnace cinder is used as cement raw material.
The present invention by high ferro lateritic nickel ore with addition of the low iron lateritic nickel ore in same mining area, the high ferro lateritic nickel ore and low
The nickel content of iron lateritic nickel ore burden control mixing lateritic nickel ore is 1.4%-1.8%, in raising mixing lateritic nickel ore raw material
Nickel content, is conducive to the enrichment of fire reduction process nickel and iron and grows up, and improves the molten point of nickel grade for smelting gained dilval,
The low problem of high ferro lateritic nickel ore fire reduction fusion process nickel grade is efficiently solved, while low iron oxide red can also be comprehensively utilized
Native nickel minerals, improves lateritic nickel ore with mining area raw material comprehensive utilization ratio.Thus, the integrated treatment of the lateritic nickel ore of the embodiment of the present invention
Method production efficiency is high, energy consumption is low, and comprehensive resource utilization rate is high, and dilval nickel grade is high.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 shows the schematic flow sheet of the integrated conduct method of lateritic nickel ore according to an embodiment of the invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not considered as limiting the invention.
According to an aspect of the present invention, the invention provides a kind of integrated conduct method of lateritic nickel ore.With reference to Fig. 1,
Embodiments in accordance with the present invention, explain to the method citing, and the method includes：
(1) the high ferro lateritic nickel ore, low iron lateritic nickel ore, reducing agent and additive are distinguished into drying, broken, screening
Afterwards, mixed, to obtain mixed material；
(2) mixed material is carried out into forming processes, to obtain molding materials；
(3) reduction roasting treatment is carried out after molding materials are dried, to obtain metallized pellet；
(4) a point smelting is melted：Metallized pellet hot melt point is smelted, dilval and smelted furnace cinder is obtained.
Wherein, the iron-holder of the high ferro lateritic nickel ore selected in step (1) is higher than 40%, can use humus layer ore；It is low
The iron-holder of iron lateritic nickel ore is less than 15%.Desirable humus layer ore.Because iron content in selected ore, nickel amount are not fixed
Property, the present invention not considered critical high ferro lateritic nickel ore, the ratio of low iron lateritic nickel ore, but by adjust high ferro lateritic nickel ore and
The proportioning of low iron lateritic nickel ore is 1.4%-1.8% come the nickel content for controlling to mix lateritic nickel ore, you can meet of the invention wanting
Ask., respectively by the 10%-30% of mixing lateritic nickel ore gross mass, 8%-15% is mixed for reducing agent of the invention and flux
Close.
Embodiments in accordance with the present invention, each raw material is mixed according to the above ratio, the high ferro lateritic nickel ore and low iron
Nickel content in lateritic nickel ore burden control mixing lateritic nickel ore is described in nickel content is accounted in 1.4%-1.8%, i.e. mixed material
The 1.4%-1.8% of low iron lateritic nickel ore and the high ferro lateritic nickel ore total amount, improves the nickel in mixing lateritic nickel ore raw material
Content, is conducive to the enrichment of fire reduction process nickel and iron and grows up, and improves the molten point of nickel grade for smelting gained dilval, has
Solve the problems, such as that high ferro lateritic nickel ore fire reduction fusion process nickel grade is low to effect, while it is low to comprehensively utilize same mining area
Iron lateritic nickel ore, improves lateritic nickel ore with mining area raw material comprehensive utilization ratio.Thus, the synthesis of the lateritic nickel ore of the embodiment of the present invention
Processing method production efficiency is high, energy consumption is low, and comprehensive resource utilization rate is high, and dilval nickel grade is high.
It should be strongly noted that " mixing lateritic nickel ore " gross mass of the present invention, refers to low iron oxide red in step (1)
Native nickel minerals and high ferro lateritic nickel ore quality sum.
Embodiments in accordance with the present invention, the species of reducing agent is not particularly limited, and can be solid state reduction agent, it is also possible to
It is the gaseous reducing agents such as hydrogen and carbon monoxide.Some preferred embodiments of the invention, reducing agent can be reduction coal.By
This, the low cost of reducing agent, reactivity is high, and reduction effect is good.
Embodiments in accordance with the present invention, the additive is selected from least one in lime, lime stone and carbide slag.By
This, smelting temperature is low, and the time is short, and smelting energy consumption is small, and nickel grade is high.
Embodiments in accordance with the present invention, will can be dried treatment in reduction roasting before processing by mixing pelletizing.By
This, the time of reduction roasting is short, and temperature is low, less energy consumption.
Embodiments in accordance with the present invention, reduction roasting treatment is carried out after pelletizing is dried using regenerative rotary hearth furnace, reduction
The temperature of calcination process is 1150-1300 DEG C, and the time is 30-50 minutes.Relative to traditional roaster, reduction roasting of the present invention
Efficiency high, energy consumption is low, and metal percent reduction is high.
According to a preferred embodiment of the invention, it is more than 14% using nickel grade in this method gained dilval, nickel is reclaimed
Rate is more than 92%.Molten point of smelting step of the present invention is carried out in molten point of stove of combustion gas.High temperature furnace slag is preheated by air heat-exchanging device
Drying system is delivered to after air to use or used as combustion air, the slag after cooling can be used as cement producting material, save
The energy.
Embodiment 1
By high ferro lateritic nickel ore (nickeliferous 1.16%, iron content 42.21%), low iron lateritic nickel ore (nickeliferous 1.75%, iron content
12.78%) for raw material mixes in proportion, the nickel content for controlling to mix lateritic nickel ore is 1.4%, and reduction coal and lime amount of allocating are divided
The 10% and 8% of lateritic nickel ore gross mass Wei not mixed, raw material is mixed according to the above ratio and is carried out forming processes, gained shaping
Material is uniformly distributed into regenerative rotary hearth furnace and carries out reduction roasting after drying, and the temperature of reduction roasting treatment is 1150 DEG C, time
It is 30 minutes, the high-temperature metal pellet for obtaining, high-temperature metal pellet hot charging is entered into the molten point stove of combustion gas carries out smelting final obtaining
To dilval and smelted furnace cinder, smelted furnace cinder can be used as cement raw material, gained dilval nickel grade 14.2%, nickel recovery
94%.
Embodiment 2
By high ferro lateritic nickel ore (nickeliferous 1.46%, iron content 41.21%), low iron lateritic nickel ore (nickeliferous 1.85%, iron content
11.56%) for raw material mixes in proportion, the nickel content for mixing lateritic nickel ore is controlled for 1.6%, reduction coal and lime stone amount of allocating
Respectively mix the 15% and 12% of lateritic nickel ore gross mass, raw material is mixed according to the above ratio and carries out forming processes, gained
Molding materials are uniformly distributed into regenerative rotary hearth furnace and carry out reduction roasting after drying, and the temperature of reduction roasting treatment is 1200 DEG C,
Time is 40 minutes, the high-temperature metal pellet for obtaining, and high-temperature metal pellet hot charging is entered into the molten point stove of combustion gas is smelted most
Dilval and smelted furnace cinder are obtained eventually, and smelted furnace cinder can be used as cement raw material, and gained dilval nickel grade 15.4%, nickel is returned
Yield 93%.
Embodiment 3
By high ferro lateritic nickel ore (nickeliferous 1.39%, iron content 40.36%), low iron lateritic nickel ore (nickeliferous 2.15%, iron content
10.78%) for raw material mixes in proportion, the nickel content for mixing lateritic nickel ore is controlled for 1.8%, reduction coal and carbide slag amount of allocating
Respectively mix the 30% and 15% of lateritic nickel ore gross mass, raw material is mixed according to the above ratio and carries out forming processes, gained
Molding materials are uniformly distributed into regenerative rotary hearth furnace and carry out reduction roasting after drying, and the temperature of reduction roasting treatment is 1300 DEG C,
Time is 50 minutes, the high-temperature metal pellet for obtaining, and high-temperature metal pellet hot charging is entered into the molten point stove of combustion gas is smelted most
Dilval and smelted furnace cinder are obtained eventually, and smelted furnace cinder can be used as cement raw material, and gained dilval nickel grade 16.8%, nickel is returned
Yield 96%.
Embodiment 4
By high ferro lateritic nickel ore (nickeliferous 1.03%, iron content 46.31%), low iron lateritic nickel ore (nickeliferous 1.82%, iron content
11.76%) for raw material mixes in proportion, the nickel content for controlling to mix lateritic nickel ore is 1.5%, and reduction coal amount of allocating is red for mixing
Native nickel minerals gross mass 10%, to allocate total amount into be mix lateritic nickel ore gross mass 15% for lime and lime stone, according to the above ratio
Raw material is mixed and forming processes are carried out, gained molding materials are uniformly distributed into regenerative rotary hearth furnace and carry out reduction roasting after drying
Burn, the temperature of reduction roasting treatment is 100 DEG C, and the time is 35 minutes, the high-temperature metal pellet for obtaining, by high temperature metallization ball
Group's hot charging enters molten point of stove of combustion gas to carry out smelting and finally gives dilval and smelted furnace cinder, and smelted furnace cinder can be used as cement raw material,
Gained dilval nickel grade 14.8%, nickel recovery 93%.
Embodiment 5
By high ferro lateritic nickel ore (nickeliferous 1.4%, iron content 40%), low iron lateritic nickel ore (nickeliferous 2.28%, iron content 14%)
For raw material mixes in proportion, the nickel content for controlling to mix lateritic nickel ore is 1.5%, and reduction coal amount of allocating is total for mixing lateritic nickel ore
The 30% of quality, it is mix lateritic nickel ore gross mass 8% that lime, carbide slag allocate total amount into, according to the above ratio mixes raw material
And forming processes are carried out, gained molding materials are uniformly distributed into regenerative rotary hearth furnace and carry out reduction roasting, reduction roasting after drying
The temperature for the treatment of is 1250 DEG C, and the time is 40 minutes, and high-temperature metal pellet hot charging is entered combustion by the high-temperature metal pellet for obtaining
The molten point stove of gas carries out smelting and finally gives dilval and smelted furnace cinder, and smelted furnace cinder can be used as cement raw material, and gained ferronickel is closed
Golden nickel grade 15.1%, nickel recovery 96%.
Embodiment 6
By high ferro lateritic nickel ore (nickeliferous 1.46%, iron content 41%), low iron lateritic nickel ore (nickeliferous 1.98%, iron content 15%)
For raw material mixes in proportion, the nickel content for controlling to mix lateritic nickel ore is 1.8%, and reduction coal amount of allocating is total for mixing lateritic nickel ore
The 20% of quality, it is mix lateritic nickel ore gross mass 15% that lime, lime stone, carbide slag allocate total amount into, according to the above ratio will
Raw material is mixed and carries out forming processes, and gained molding materials are uniformly distributed into regenerative rotary hearth furnace and carry out reduction roasting after drying,
The temperature of reduction roasting treatment is 1300 DEG C, and the time is 30 minutes, the high-temperature metal pellet for obtaining, by high-temperature metal pellet
Hot charging enters molten point of stove of combustion gas to carry out smelting and finally gives dilval and smelted furnace cinder, and smelted furnace cinder can be used as cement raw material, institute
Dilval nickel grade 14.9% is obtained, nickel recovery is more than 94%.
Embodiment 7
The present embodiment is comparative example, is raw material with high ferro lateritic nickel ore (nickeliferous 1.25%, iron content 43.01%), also
Raw coal and lime stone amount of allocating are respectively the 15% and 12% of mixing lateritic nickel ore gross mass, according to the above ratio mix simultaneously raw material
Forming processes are carried out, gained molding materials are uniformly distributed into regenerative rotary hearth furnace and carry out reduction roasting after drying, at reduction roasting
The temperature of reason is 1200 DEG C, and the time is 40 minutes, and high-temperature metal pellet hot charging is entered combustion gas by the high-temperature metal pellet for obtaining
A molten point stove carries out smelting and finally gives dilval and smelted furnace cinder, and smelted furnace cinder can be used as cement raw material, gained dilval
Nickel grade 5.8%, nickel recovery 85%.
What present disclosure was touched upon is exemplary embodiment, is not departing from the protection domain that claims are defined
In the case of, each embodiment of the application can be made various changes and modifications.Therefore, described embodiment is intended to contain
Cover all such changes, modifications and deformation in the protection domain of appended claims.In addition, unless stated otherwise,
So any embodiment all or part of can combine any other embodiment all or part of use.
Claims (10)
1. a kind of processing method of lateritic nickel ore, it is characterised in that including：
1) mixed material is prepared：By high ferro lateritic nickel ore, low iron lateritic nickel ore, reducing agent and additive distinguish drying, it is broken,
Mix after screening, obtain mixed material；
2) material forming：The mixed material is carried out into forming processes, molding materials are obtained；
3) reduction roasting：The molding materials are carried out into reduction roasting, metallized pellet is obtained；
4) a point smelting is melted：Metallized pellet hot melt point is smelted, dilval and smelted furnace cinder is obtained.
2. method according to claim 1, it is characterised in that the iron-holder of the high ferro lateritic nickel ore is higher than 40%, institute
The iron-holder for stating low iron lateritic nickel ore is less than 15%.
3. method according to claim 1, it is characterised in that in the mixed material, nickel content accounts for the low iron oxide red
The 1.4%-1.8% of native nickel minerals and the high ferro lateritic nickel ore total amount.
4. method according to claim 3, it is characterised in that the reducing agent accounts for the low iron lateritic nickel ore and the height
The 10%-30% of iron lateritic nickel ore gross mass.
5. method according to claim 3, it is characterised in that the flux accounts for the low iron lateritic nickel ore and the height
The 8%-15% of iron lateritic nickel ore gross mass.
6. method according to claim 1, it is characterised in that the temperature of the reduction roasting step is 1150-1300 DEG C,
Roasting time is 30-50 minutes.
7. method according to claim 4, it is characterised in that the reducing agent is reduction coal.
8. method according to claim 5, it is characterised in that the flux is included in lime, lime stone, carbide slag
It is at least one.
9. according to any described method of claim 1 to 8, it is characterised in that the reduction roasting step turns bottom in heat accumulating type
Carried out in stove；The molten point of smelting step is carried out in molten point of stove of combustion gas.
10. method according to claim 9, it is characterised in that before the reduction roasting step, also including drying
The step of stating molding materials；The molten point of smelting step gained smelted furnace cinder is used as cement raw material.
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| CN201611026042.8A CN106755953A (en) | 2016-11-17 | 2016-11-17 | The processing method of lateritic nickel ore |
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| CN201611026042.8A CN106755953A (en) | 2016-11-17 | 2016-11-17 | The processing method of lateritic nickel ore |
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Cited By (1)
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| CN113201655A (en) * | 2021-03-13 | 2021-08-03 | 江西铜业铅锌金属有限公司 | Lead smelting process for improving PbS reduction efficiency |
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