CN105463214B - A kind of method that high ferronickel is produced using low poor grade lateritic nickel ore - Google Patents
A kind of method that high ferronickel is produced using low poor grade lateritic nickel ore Download PDFInfo
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Abstract
The invention discloses a kind of methods for producing high ferronickel using low poor grade lateritic nickel ore, include the following steps：Pre-treatment step：By the low poor grade lateritic nickel ore by drying process, break process, broken lateritic nickel ore is obtained；First time batch mixing step：The broken lateritic nickel ore and reducing agent, flux are subjected to first time mixing treatment, obtain the first mixed material；Roasting reduction step：First mixed material in rotary kiln is subjected to roasting reduction processing, obtains roasting sand；Second of batch mixing step：The roasting sand and fuel are subjected to second of mixing treatment, obtain the second mixed material；Melting step：Second mixed material in side-blown converter is subjected to melting processing, obtains ferro-nickel product and clinker.The smelting process of the present invention can be substantially reduced the cost of the high ferronickel of ton；The final products that the present invention obtains are casting pig, and meet stainless steel smelting enters stove ferronickel component requirements, suitable for the raw materials for metallurgy of stainless steel.
Description
Technical field
The invention belongs to metallurgical technology technical fields, are related to a kind of method of smelting high-nickel iron, particularly, are related to one kind and adopt
The method for producing high ferronickel with low poor grade lateritic nickel ore, the area poor especially suitable for electric power.
Background technology
The fast development of the nickel sulfide ore increasingly depleted and domestic stainless steel industry with high-grade, easily exploited, low poor product
The utilization of position lateritic nickel ore receives more and more attention.Proress Technolgies of Laterite-nickel Ore is broadly divided into wet method smelting process and pyrogenic process
Smelting process, but in world wide comparative maturity the process using smelting ferronickel from red soil nickel ore still using pyrometallurgical smelting as
It is main.Wherein in pyrometallurgical smelting using it is wide be RKEF (main technique is rotary kiln baking-electro-smelting) methods and blast furnace
Method.But low-grade laterite nickel ore is smelted using RKEF methods, power consumption is big, and furnace operation requirement is high, and production cost is high；Blast furnace
Method long flow path, low output are uneconomical, it is necessary to consume secondary energy sources coke.
The content of the invention
The defects of for the prior art, it is an object of the invention to provide a kind of high using low poor grade lateritic nickel ore production
The method of ferronickel, this method can effectively solve the problems, such as ring formation of rotary kiln, can replace electricity with coal, the high-temperature flue gas of side-blown converter is direct
Rotary kiln or residual heat steam power generation system can be entered, thus it is energy saving, energy consumption is effectively reduced, improves the production capacity of ferronickel, is dropped
Low cost.
To achieve these goals, present invention employs following technical schemes：
A kind of method for producing high ferronickel using low poor grade lateritic nickel ore, includes the following steps：
Pre-treatment step：By the low poor grade lateritic nickel ore by drying process, break process, obtain broken red
Native nickel minerals；
First time batch mixing step：The broken lateritic nickel ore and reducing agent, flux are subjected to first time mixing treatment,
Obtain the first mixed material；
Roasting reduction step：First mixed material in rotary kiln is subjected to roasting reduction processing, obtains roasting sand；
Second of batch mixing step：The roasting sand and fuel are subjected to second of mixing treatment, obtain the second mixed material；
Melting step：Second mixed material in side-blown converter is subjected to melting processing, obtains ferro-nickel product and clinker.
Preferably, in the above-mentioned method that high ferronickel is produced using low poor grade lateritic nickel ore, the low poor grade laterite
The nickel content of nickel minerals is 1.5~2.3wt%, and TFe contents are 14~25wt%；Preferably, mass ratio≤10 of TFe and Ni.
Preferably, above-mentioned using in the method for the high ferronickel of low poor grade lateritic nickel ore production, the first time batch mixing walks
In rapid, in first mixed material, the mass percent of the reducing agent and the lateritic nickel ore is 5%~9%, described
The mass percent of flux and the lateritic nickel ore is 2%~5%；The reducing agent is anthracite；The flux for lime or
Dolomite.
Preferably, in the above-mentioned method that high ferronickel is produced using low poor grade lateritic nickel ore, the roasting reduction step
In, in roasting reduction processing, temperature is 1150 DEG C~1250 DEG C, time 40-60min；Preferably, the rotary kiln
The kiln hood drop temperature of roasting is 950-1050 DEG C.
Preferably, in the above-mentioned method that high ferronickel is produced using low poor grade lateritic nickel ore, the roasting reduction step
In, in roasting reduction processing, slag type (MgO+CaO)/SiO of the roasting sand2For 0.40~0.70.
Preferably, above-mentioned using in the method for the high ferronickel of low poor grade lateritic nickel ore production, second of batch mixing walks
In rapid, in second mixed material, the mass percent of the fuel and the roasting sand is 2%~3%.
Preferably, in the above-mentioned method that high ferronickel is produced using low poor grade lateritic nickel ore, the fuel for nut coke or
Lump coal or nut coke and lump coal mixture.
Preferably, in the above-mentioned method that high ferronickel is produced using low poor grade lateritic nickel ore, in the melting step,
In the melting processing, smelting temperature >=1600 DEG C of the side-blown converter, tapping temperature is 1530-1580 DEG C, corresponding to tap a blast furnace
Temperature is controlled at 1480-1530 DEG C, and the tapping temperature is higher than described 40 DEG C of tapping temperature or more；Preferably, it is described to slag tap
Temperature is higher than 40 DEG C -50 DEG C of the tapping temperature.
Preferably, in the above-mentioned method that high ferronickel is produced using low poor grade lateritic nickel ore, in the melting step,
In the melting processing, supplement the fuel and utilize the side-blown agitation of hot-air；Preferably, in the melting step, described
In melting processing, the ingredient of the clinker includes：CaO：3.5-6.5wt%, MgO：18-30wt%, SiO2：45-65wt%,
AL2O3：2.5-5.5wt%, TFe：2.5-4.0wt%, Ni≤0.20wt%.
Preferably, above-mentioned using in the method for the high ferronickel of low poor grade lateritic nickel ore production, the first time batch mixing walks
In rapid, by the first mixed material pressure ball, the first mixed material after pressure ball is obtained；In the roasting reduction step, by institute
It states the first mixed material after pressure ball and roasting reduction processing is carried out in rotary kiln, obtain roasting sand.
The present invention be lateritic nickel ore is carried out in rotary kiln the roasting sand after roasting reduction be directly loadable into side-blown converter into
Row heating and melting and further reduction, reach slag sluicing system, produce high ferronickel.The high ferronickel that the present invention produces can be packed into
In hot-metal bottle, toward the blocking, grain of casting or refining procedure is sent to traveling crane；The smelting process of the present invention can be substantially reduced ton
The cost of high ferronickel；The final products that the present invention obtains are casting pig, and meet stainless steel smelting enters stove ferronickel component requirements, are fitted
For the raw materials for metallurgy of stainless steel；Nickel content >=10% in the final products ferronickel that the present invention obtains is returned in this smelting process
Yield TFe >=85%, Ni >=95%, metal comprehensive recovery >=85%.
Description of the drawings
Fig. 1 is the technological process simplified schematic diagram of the embodiment of the present invention；
Fig. 2 is the process flow diagram of the embodiment of the present invention.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and detailed description.
The process flow diagram of the embodiment of the present invention is as shown in Figure 1 and Figure 2.
Main experimental equipment used in following embodiment of the present invention has：Rotary kiln is that specification is the normal of 3.6 × 72m of Ф
Advise inclined type rotary rotary kiln, the side-blown converter that molten bath effective area is S=10.5 ㎡.
A kind of method for producing high ferronickel using low poor grade lateritic nickel ore, includes the following steps：
Step 1: pretreatment：
First low poor grade lateritic nickel ore is crushed after overly moist jig point crushes, dry, dry mine crushes in drying kiln
Lateritic nickel ore afterwards；In the broken lateritic nickel ore, granularity is less than or equal to account for total amount more than the 80% of 3mm, and water content is
15-30% is preferably 20%.
The nickel content of the low poor grade lateritic nickel ore is 1.5~2.3wt%, and TFe contents are 14~22wt%, TFe and Ni
Mass ratio≤10.
Step 2: first time batch mixing：
The broken lateritic nickel ore is mixed with reducing agent and solvent, the water content of the reducing agent and solvent is 15-
30%, it is preferably 20%, and in the reducing agent and solvent, granularity is less than or equal to account for total amount more than the 80% of 3mm, obtains first
Mixed material.
In this step, the first mixed material after pressure ball can also be obtained, again by the first mixed material pressure ball for following
Roasting reduction step, roasting reduction processing after, obtain roasting sand.
Pressure ball step is the preferred embodiment of the present invention, the ring formation of material when pressure ball can effectively alleviate roasting in kiln
Problem and reduction dedusting ash quantity, to increasing kiln body cycle of operation significant effect, improve yield, reduce cost；
Step 3: roasting reduction：
First mixed material is subjected to roasting reduction in rotary kiln, obtains roasting sand.
In above-mentioned smelting ferronickel method, in order to facilitate operating, it is necessary to control the reduction in calcination rotary kiln for rotary kiln
Dosage, calcination temperature, roasting time etc..In calcination rotary kiln step, calcination temperature is 1100 DEG C~1250 DEG C (such as 1100
℃、1150℃、1200℃、1250℃)；Roasting time is 40~60min (such as 42min, 46min, 55min, 58min)；Also
The dosage of former agent is 5%~9% (such as 5.5%, 6.0%, 6.5%, 7%, 8%) of lateritic nickel ore weight；The dosage of flux
For 2%~5% (such as 2.2%, 2.5%, 2.8%, 3.5%, 4.6%, 4.9%) of lateritic nickel ore weight；It is highly preferred that roasting
Burn rotary kiln kiln hood drop temperature for 950-1050 DEG C (such as 950 DEG C, 980 DEG C, 1000 DEG C, 1020 DEG C, 1050 DEG C, 1040
DEG C), in order to stable operation reduces coal consumption, cost-effective.In order to promote solid phase reaction, generation roasting sand (low melting point
Close object), the reduction beneficial to metal is assembled, and can control slag type, in calcination rotary kiln magnetizing roast reduction step, rotary kiln baking
Slag type (the MgO+CaO)/SiO2 for roasting sand afterwards is preferably controlled between 0.40~0.70.
, it is necessary to which reducing agent (carbon) all participates in reaction in calcination rotary kiln reduction step, therefore select volatile matter moderate,
The higher reducing agent carbon of fixed carbon, as a kind of preferred embodiment, the reducing agent carbon that is used in calcination rotary kiln roasting process
For anthracite, flux is lime or dolomite, for controlling slag type.
Step 4: second of batch mixing：
After the roasting sand is mixed with fuel, the second mixed material is obtained.
Step 5: melting：
Second mixed material is sent into side-blown converter melting, obtains ferro-nickel product and clinker.
In second mixed material, the mass percent of fuel and roasting sand is 2%~3%；Fuel for nut coke or lump coal or
Nut coke and lump coal mixture.
The fuel in the second mixed material is utilized in fusion process and utilizes the side-blown agitation of hot-air.
Smelting temperature >=1600 DEG C (such as 1610 DEG C, 1650 DEG C, 1670 DEG C) of this step, tapping temperature control exist
1490-1560 DEG C, corresponding tapping temperature control is at 1450-1520 DEG C, and tapping temperature is higher than 40 DEG C of tapping temperature or more, more
It is preferred that tapping temperature is higher than 40 DEG C -50 DEG C of tapping temperature.
The slag composition obtained after side-blown converter melting includes：CaO：3.5-6.5wt%, MgO：18-30wt%, SiO2：45-
65wt%, AL2O3：2.5-5.5wt%, TFe (full iron)：3.5-6.0wt%, Ni≤0.20wt%.In clinker except include it is above-mentioned into
Exceptionally, some other inevitable impurity components are further included.
In this step, the main further reduction for completing roasting sand and slag sluicing system.
In implementation process of the present invention, relatively fine mixture particle " flue dust " in kiln is extracted out under wind turbine draft effect, cigarette
Dust quantity is 15% or so of lateritic nickel ore amount, this flue dust is not counted in proportioning and calculates because being to recycle, " flue dust " warp
It crosses after electric precipitation and obtains " flue gas " and be sent to desulfurizer carrying out purification discharge；" flue gas " generated during " calcined by rotary kiln "
The drying of material is used for into " drying kiln drying " again；It is used to forge in generation " flue gas " and entrance " rotary kiln " in " side-blown converter "
It burns.
Using side-blown converter melting step the metal recovery rate can be made to reach more than 85%, metal recovery rate reaches the synthesis referred to
Metal recovery rate comprising two kinds of metals of iron and nickel, only enumerates the rate of recovery calculation of ferrous metal herein：The ferrous metal rate of recovery=
In the laterite that (total metal content-(iron metal contents × slag amount in clinker) in the laterite consumed) ÷ is consumed
Total metal content.
In calcination rotary kiln roasting reduction step, by the way that calcination temperature and reduction dosage etc. is controlled to ensure in rotary kiln
Roasting situation, remove all moisture, form roasting sand (low-melting compound), be so conducive to shorten follow-up side-blown converter
Expect the time, reduce fuel consumption, increase yield.In calcination rotary kiln, according to the reproducibility of oxide under equality of temperature, straight line position
It puts in relatively low element, easily restores the oxide of its upper part, i.e., its oxide is more stable, that is to say, that in melting temperature
In the range of degree, the reduction sequence of oxide is nickel, iron, silicon.The oxygen content of ferriferous oxide is from higher oxide to rudimentary oxidation
What object changed step by step, when temperature is more than 570 DEG C, variation order is：Fe2O3→Fe3O4→FexO→Fe.In lateritic nickel ore
Fe2O3It is reduced to certain magnetic Fe3O4Or FeO, and having the generation of small part fe, NiO is largely reduced to magnetic
The Ni of property.
The reaction equation of calcination rotary kiln roasting reduction is as follows：
2C+O2=2CO
NiO+C=Ni+CO ↑
NiO+CO=Ni+CO2
3Fe2O3+ CO=2Fe3O4+CO2
Fe3O4+ CO=3FeO+CO2
FeO+CO=Fe+CO2(there is quite a few ferrous iron that the reaction occurs, remaining ferrous iron counter in side-blown converter can be given birth to
The reaction)
The key reaction mechanism occurred in side-blown converter melting is as follows：
C+O2=CO
2CO+2O2=2CO2
NiO+C=Ni+CO ↑
FeO+CO=Fe+CO2
SiO2+ C=Si+CO2↑
Embodiment 1
(1) pre-process：Using TFe=17.56wt%, the low-grade laterite nickel ore of Ni=1.84wt%, will as raw material
It sieves, is dry, makes its granularity≤3mm's to account for more than 80%, moisture content 20%；
(2) first time batch mixing：Then lateritic nickel ore is uniformly mixed to obtain the first mixed material with lime and anthracite,
In by weight, lateritic nickel ore:Anthracite:Lime=100:6.5:2.
(3) roasting reduction：Then the first mixed material is sent to calcination rotary kiln and carries out magnetizing roast reduction, kiln hood material
Temperature (i.e. drop temperature) control is 950 DEG C, and the calcination temperature of firing stage is 1150 DEG C or so, roasting time 55min, is mixed
Material after conjunction, which enters, to be controlled in 5h or so calcination rotary kiln to the total time for going out calcination rotary kiln, roasting sand is obtained, wherein roasting
Slag type (MgO+CaO)/SiO of sand is roasted after burning2Mass ratio is 0.61.
(4) second of batch mixing：Above-mentioned roasting sand is taken 100 parts, with addition of 2.5 parts of nut cokes, obtains the second mixed material.
(5) melting：Second mixed material hot charging is sent to side-blown converter melting, air stirring molten bath and coal powder injection are blasted, in side
In blown converter, smelting temperature control is 1650 DEG C or so, and tapping temperature is 1550 DEG C, and corresponding tapping temperature is 1450 DEG C, is obtained
Nickelic ferrous components such as table 1, the slag composition obtained after side-blown converter melting produces final ferro-nickel product nickel grade referring to table 2
For 10.21wt%.
Embodiment 2
(1) pre-process：Using TFe=17.56wt%, the low-grade laterite nickel ore of Ni=1.84wt%, will as raw material
It sieves, is dry, makes its granularity≤3mm's to account for more than 80%, moisture content 20%.
(2) first time batch mixing：Then lateritic nickel ore is uniformly mixed to obtain the first mixed material with lime and anthracite,
In by weight, lateritic nickel ore:Anthracite:Lime=100:7:3.
(3) roasting reduction：Then the first mixed material is sent to calcination rotary kiln and carries out magnetizing roast reduction, kiln hood material
Temperature (i.e. drop temperature) control is 1000 DEG C, and the calcination temperature of firing stage is 1200 DEG C or so, roasting time 45min,
Mixed material, which enters, to be controlled in 5h or so calcination rotary kiln to the total time for going out calcination rotary kiln, obtains roasting sand, wherein
Slag type (MgO+CaO)/SiO2 mass ratioes of clinker are 0.65 after roasting.
(4) second of batch mixing：Above-mentioned roasting sand is taken 100 parts, with addition of 3 parts of nut cokes, obtains the second mixed material.
(5) melting：Second mixed material hot charging is sent to side-blown converter melting, air stirring molten bath and coal powder injection are blasted, in side
In blown converter, smelting temperature control is 1650 DEG C or so, and tapping temperature is 1530 DEG C, and corresponding 1480 DEG C of tapping temperature obtains
Nickelic ferrous components such as table 1, referring to table 2, produce final ferro-nickel product nickel grade is the slag composition obtained after side-blown converter melting
10.3%.
Embodiment 3
(1) pre-process：Using TFe=17.56wt%, the low-grade laterite nickel ore of Ni=1.84wt%, will as raw material
It sieves, is dry, makes its granularity≤3mm's to account for more than 80%, moisture content 20%.
(2) first time batch mixing：Then lateritic nickel ore is uniformly mixed to obtain the first mixed material with lime and anthracite,
In by weight, lateritic nickel ore:Anthracite:Lime=100:8:4.
(3) roasting reduction：Then the first mixed material is sent to calcination rotary kiln and carries out magnetizing roast reduction, kiln hood material
Temperature (i.e. drop temperature) control is 1050 DEG C, and the calcination temperature of firing stage is 1250 DEG C or so, roasting time 40min,
Mixed material, which enters, to be controlled in 5h or so calcination rotary kiln to the total time for going out calcination rotary kiln, obtains roasting sand, wherein
Slag type (MgO+CaO)/SiO2 mass ratioes of clinker are 0.70 after roasting.
(4) second of batch mixing：Above-mentioned roasting sand is taken 100 parts, with addition of 3 parts of nut cokes (or coke, lump coal), obtains second
Mixed material.
(5) melting：Second mixed material hot charging is sent to side-blown converter melting, air stirring molten bath and coal powder injection are blasted, in side
In blown converter, smelting temperature control is 1650 DEG C or so, and tapping temperature is 1550 DEG C, and corresponding 1500 DEG C of tapping temperature obtains
Nickelic ferrous components such as table 1, referring to table 2, produce final ferro-nickel product nickel grade is the slag composition obtained after side-blown converter melting
10.0%.
Table 1：The ferro-nickel product ingredient (wt%) that embodiment 1-3 is obtained
Table 2：The main component (wt%) for the clinker that embodiment 1-3 is obtained
| Embodiment | CaO | MgO | SiO2 | Al2O3 | TFe | Ni |
| 1 | 6.5 | 27.8 | 59.3 | 2.1 | 2.9 | 0.12 |
| 2 | 5.4 | 26.57 | 52.1 | 2.9 | 3.2 | 0.10 |
| 3 | 2.52 | 32.18 | 55 | 4.96 | 3.5 | 0.13 |
Remarks：The form of TFe divided by fe in table 2 exist outer, it is also possible to be deposited in the form of ferrous, ferroso-ferric oxide
.
Comparative example：
The following table 3 gives coal consumption, power consumption and the ton ferronickel cost of the high ferronickel of production using embodiment 1 in actual production
Deng, and compared with RKEF, direct-reduction, blast furnace smelting method, it can substantially reduce ton in the method for illustrating embodiment 1
The production cost of ferronickel.Wherein, the cost of following material is respectively：Lateritic nickel ore unit price per ton is 455 yuan total, semi-coke reducing agent
Total 970 yuan of unit price per ton, smokeless coal consumption unit price per ton is 683 yuan total, and bituminous coal unit price per ton is 776 yuan, nut coke for 1200 yuan/
Ton.Power consumption often spends 0.6 yuan.Unit consumption is a ton ferronickel unit consumption in table 3.
Table 3：The Cost comparisons of difference production ferronickel method
Remarks：Fuel used in RKEF techniques is semi-coke, and other is anthracite；
It can be obtained by table 3, the cost of ton ferronickel of the present invention is relatively low, has the advantage for reducing cost, and yield is high.RKEF works
Skill yield is higher, but power consumption cost is high, and ton ferronickel is high；The cost of direct reduction process for rotary kiln is relatively also low, but exists
The defects of low output, and rotary kiln for directly reducing product dregginess is more, it is impossible to it is heat-fed.Blast furnace process low output, and make
Fuel is mostly secondary energy sources, and pollution is big, uneconomical.
To sum up, the present invention is to employ the roasting sand after rotary kiln baking reduces to be directly entered side-blown converter melting so that slag iron
Isolate the Novel smelting technique of high ferronickel.Lateritic nickel ore, that is, low poor grade lateritic nickel ore carries out roasting in calcination rotary kiln also
Original forms roasting sand, is sent directly into side-blown converter, and add certain fuel (nut coke, coke, lump coal), carry out heating and melting with
And further reduction, reach slag sluicing system, produce high ferronickel.The high ferronickel that the present invention produces can be fitted into hot-metal bottle, used
Traveling crane is blocking or be sent to refining procedure toward pig machine casting.The smelting process of the present invention can be substantially reduced the high ferronickel of ton
Cost.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, all things considered are all merely illustrative, not the only.Institute
Have within the scope of the present invention or be included in the invention in the change being equal in the scope of the present invention.
Claims (8)
- A kind of 1. method that high ferronickel is produced using low poor grade lateritic nickel ore, it is characterised in that：Include the following steps：Pre-treatment step：By the low poor grade lateritic nickel ore by drying process, break process, broken laterite nickel is obtained Ore deposit；First time batch mixing step：The broken lateritic nickel ore and reducing agent, flux are subjected to first time mixing treatment, obtained First mixed material；In first mixed material, the mass percent of the reducing agent and the lateritic nickel ore for 5%~ 9%, the mass percent of the flux and the lateritic nickel ore is 2%~5%；The reducing agent is anthracite；The flux For lime or dolomite；In the first time batch mixing step, by the first mixed material pressure ball, the first mixed material after pressure ball is obtained；It is described In roasting reduction step, the first mixed material after the pressure ball in rotary kiln is subjected to roasting reduction processing, is roasted Sand；Roasting reduction step：First mixed material in rotary kiln is subjected to roasting reduction processing, obtains roasting sand；Institute It states in roasting reduction processing, temperature is 1150 DEG C~1250 DEG C, time 40-60min；The kiln hood discharging of the rotary kiln baking Temperature is 950-1050 DEG C；Second of batch mixing step：The roasting sand and fuel are subjected to second of mixing treatment, obtain the second mixed material；Institute It states in the second mixed material, the mass percent of the fuel and the roasting sand is 2%~3%；Melting step：Second mixed material in side-blown converter is subjected to melting processing, obtains ferro-nickel product and clinker；The nickel content of the low poor grade lateritic nickel ore is 1.5~2.3wt%, and TFe contents are 14~25wt%；Wherein, " flue gas " that is generated during " calcined by rotary kiln " and drying into " drying kiln drying " for material；It is " side-blown It is used to calcine in generation " flue gas " and entrance " rotary kiln " in stove ".
- 2. the method according to claim 1 that high ferronickel is produced using low poor grade lateritic nickel ore, it is characterised in that：It is described Mass ratio≤10 of TFe and Ni in low poor grade lateritic nickel ore.
- 3. the method according to claim 1 or 2 that high ferronickel is produced using low poor grade lateritic nickel ore, it is characterised in that： In the roasting reduction step, in roasting reduction processing, slag type (MgO+CaO)/SiO of the roasting sand2For 0.40 ~0.70.
- 4. the method according to claim 1 or 2 that high ferronickel is produced using low poor grade lateritic nickel ore, it is characterised in that： The fuel is nut coke or lump coal or nut coke and lump coal mixture.
- 5. the method according to claim 1 or 2 that high ferronickel is produced using low poor grade lateritic nickel ore, it is characterised in that： In the melting step, in melting processing, smelting temperature >=1600 DEG C of the side-blown converter, tapping temperature 1530- 1580 DEG C, the control of corresponding tapping temperature at 1480-1530 DEG C, and the tapping temperature higher than 40 DEG C of the tapping temperature with On.
- 6. the method according to claim 5 that high ferronickel is produced using low poor grade lateritic nickel ore, it is characterised in that：It is described Tapping temperature is higher than 40 DEG C -50 DEG C of the tapping temperature.
- 7. the method according to claim 1 or 2 that high ferronickel is produced using low poor grade lateritic nickel ore, it is characterised in that： In the melting step, in melting processing, supplement the fuel and utilize the side-blown agitation of hot-air.
- 8. the method according to claim 7 that high ferronickel is produced using low poor grade lateritic nickel ore, it is characterised in that：In the melting step, in melting processing, the ingredient of the clinker includes：CaO：3.5-6.5wt%, MgO： 18-30wt%, SiO2：45-65wt%, AL2O3：2.5-5.5wt%, TFe：2.5-4.0wt%, Ni≤0.20wt%.
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| CN110066899B (en) * | 2019-04-15 | 2020-11-17 | 东北大学 | Method for comprehensive utilization of vanadium titano-magnetite by deep reduction short-process smelting |
| CN116949282B (en) * | 2023-04-28 | 2024-02-13 | 浙江华友钴业股份有限公司 | Method and equipment for treating laterite nickel ore leaching slag |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3746533A (en) * | 1972-03-22 | 1973-07-17 | L Moussoulos | Process of producing ferro-nickel in a rotary furnace including pelletizing and pre-reducing ore |
| CN101392331A (en) * | 2008-10-10 | 2009-03-25 | 建德市新安江镍合金有限公司 | Smelting technique for processing nickel ore by rotary kiln |
| CN101586188A (en) * | 2009-06-23 | 2009-11-25 | 吉林吉恩镍业股份有限公司 | Two-stage roasting mineral smelting integrated technique of laterite |
| CN102703731A (en) * | 2012-06-18 | 2012-10-03 | 中国恩菲工程技术有限公司 | Method for smelting nickel matte by using lateritic nickel ore |
| CN102758092A (en) * | 2012-07-16 | 2012-10-31 | 钢铁研究总院 | Method for producing nickel iron by comprehensively utilizing low-grade lateritic nickel ore |
| CN103937959A (en) * | 2014-03-25 | 2014-07-23 | 东营方圆有色金属有限公司 | Low cost and low energy consumption novel method for processing laterite-nickel ore |
| CN104120263A (en) * | 2014-07-25 | 2014-10-29 | 李成武 | High-solid-gas-ratio rotary kiln direct reduction method for nickel iron smelting |
| CN104451148A (en) * | 2014-12-01 | 2015-03-25 | 偏关县晋电化工有限责任公司 | Production technology for smelting ferronickel from laterite-nickel ore |
-
2015
- 2015-07-27 CN CN201510446667.9A patent/CN105463214B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3746533A (en) * | 1972-03-22 | 1973-07-17 | L Moussoulos | Process of producing ferro-nickel in a rotary furnace including pelletizing and pre-reducing ore |
| CN101392331A (en) * | 2008-10-10 | 2009-03-25 | 建德市新安江镍合金有限公司 | Smelting technique for processing nickel ore by rotary kiln |
| CN101586188A (en) * | 2009-06-23 | 2009-11-25 | 吉林吉恩镍业股份有限公司 | Two-stage roasting mineral smelting integrated technique of laterite |
| CN102703731A (en) * | 2012-06-18 | 2012-10-03 | 中国恩菲工程技术有限公司 | Method for smelting nickel matte by using lateritic nickel ore |
| CN102758092A (en) * | 2012-07-16 | 2012-10-31 | 钢铁研究总院 | Method for producing nickel iron by comprehensively utilizing low-grade lateritic nickel ore |
| CN103937959A (en) * | 2014-03-25 | 2014-07-23 | 东营方圆有色金属有限公司 | Low cost and low energy consumption novel method for processing laterite-nickel ore |
| CN104120263A (en) * | 2014-07-25 | 2014-10-29 | 李成武 | High-solid-gas-ratio rotary kiln direct reduction method for nickel iron smelting |
| CN104451148A (en) * | 2014-12-01 | 2015-03-25 | 偏关县晋电化工有限责任公司 | Production technology for smelting ferronickel from laterite-nickel ore |
Non-Patent Citations (1)
| Title |
|---|
| 我国氧气侧吹炼镍技术的工程应用;董晓伟等;《湖南有色金属》;20110630;第27卷(第3期);第26-27、78页 * |
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