CN104561527B - A kind of laterite produces ferronickel method with addition of nickel sulfide concentrate - Google Patents
A kind of laterite produces ferronickel method with addition of nickel sulfide concentrate Download PDFInfo
- Publication number
- CN104561527B CN104561527B CN201510071063.0A CN201510071063A CN104561527B CN 104561527 B CN104561527 B CN 104561527B CN 201510071063 A CN201510071063 A CN 201510071063A CN 104561527 B CN104561527 B CN 104561527B
- Authority
- CN
- China
- Prior art keywords
- nickel sulfide
- sulfide concentrate
- laterite
- nickel
- mixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/06—Alloys
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses in a kind of laterite and produce ferronickel method with addition of nickel sulfide concentrate, the method comprises the steps: a, nickel sulfide concentrate is carried out roasting pretreatment；B, pretreated nickel sulfide concentrate, laterite are done ore deposit and reduction coal mixing, after mixing, carry out roasting prereduction；Outlet high temperature calcining temperature 650～750 DEG C；The amount of allocating into of nickel sulfide concentrate makes total ore deposit S content≤0.2%, As content≤0.005% after mixing；C, 650～750 DEG C of high temperature calcinings are sent to mine heat furnace smelting obtain ferro-nickel product；Control slag melting point 1480～1500 DEG C, control SiO in slag250～53%, MgO 27～30%, FeO 8～11%.Present invention achieves nickel sulfide concentrate replaces part laterite to produce ferronickel, and produces direct motion, and ferronickel is up-to-standard, provides a kind of new thinking and method for nickeliferous comprehensive utilization of resources, has certain economic benefit and social benefit.
Description
Technical field
The invention belongs to ferroalloy production field, be specifically related in a kind of laterite produce ferronickel method with addition of nickel sulfide concentrate.
Background technology
Ferronickel is the important source material producing rustless steel and heat resisting cast steel etc., adds nickel and can improve the corrosion resistance of steel, improve steel in steel
Tensile strength, cold deformation and welding performance etc., be widely used in the fields such as machinery, medical treatment, national defence, light industry.At present by
The nickel that ferronickel provides has accounted for needed for the whole world more than the 50% of nickel amount, and China has reached more than 75% for 2013, and institute's accounting
Regular meeting is increasing.
The nickel resources being available for producing ferronickel in the world has two classes, a class to be nickel sulfide ores；Another kind of is nickel ore, because of its surface
Take on a red color, be also laterite.The whole world explored nickel minerals reserves about 23,000,000,000 tons, average nickel content is 0.97%, wherein vulcanizes
Nickel minerals reserves are about 10,500,000,000 tons, and average grade is 0.58%, account for the 28% of nickel total resources；Nickel ore is about 12,600,000,000
Ton, average grade is 1.28%, accounts for the 72% of nickel total resources, and it is that ferronickel produces topmost raw material.
Needed for China produces ferronickel, laterite resource mostlys come from Indonesia and Philippine, accounts for China's required nickel money every year
More than the 90% of source.In January, 2014 rises, and government of Indonesia implements and forbids raw ore export policy, the ferronickel manufacturing enterprise to China
Cause the biggest impact, in order to tackle this ban, it is necessary to seek all disclosure satisfy that ferronickel produce needed for nickel resources in addition
Utilize, on the one hand alleviate the buying pressure of laterite, on the other hand make production direct motion, reduce production cost.
The utilization of China's nickel sulfide ore mainly has two kinds of methods: one is to utilize electric furnace, blast furnace, Flash Smelting Furnace to be smelted into low nickel matte,
Then the noble metal such as Cu, Co inside wet underwater welding, then by electrolysis production nickel plate；Two is directly to use pressure leaching, leaching
Going out liquid electrolysis production nickel plate, the former is to utilize pyrogenic process and wet method to combine to produce nickel plate, and the response rate of nickel is low；The latter is simple employing
Wet processing produces nickel plate, and production capacity is relatively low, and energy consumption is high.So far nobody is directly used in pyrometallurgical smelting production ferronickel to nickel sulfide ore,
Trace it to its cause mainly in nickel sulfide ore sulfur, arsenic and other impurity contents high, cause sulfur in ferro-nickel product, arsenic content high,
Do not reach product quality requirement, and magnesium oxide, dioxide-containing silica are low, slag making difficulty, cause nickel recovery on the low side, produce into
This is too high.
Instant invention overcomes numerous difficulties, in laterite, produce ferronickel with addition of partial vulcanization nickel ore concentrate, thereby reduce a ton nickel
Ore deposit is consumed, and reduces a ton nickel production cost, enhances the motility of material matching, alleviates laterite buying pressure, is conducive to raw
Produce direct motion and reduce production cost.
Summary of the invention
The technical problem to be solved is to provide in a kind of laterite and produces ferronickel method with addition of nickel sulfide concentrate.
The technical solution adopted for the present invention to solve the technical problems is: produce ferronickel side with addition of nickel sulfide concentrate in a kind of laterite
Method, comprises the steps:
A, nickel sulfide concentrate is carried out roasting pretreatment, remove the As of the S and more than 30% of more than 90% in nickel sulfide concentrate；
B, the laterite of the nickel sulfide concentrate after roasting pretreatment, aqueous 20～25% is done ore deposit and reduction coal mixing, send after mixing
Enter rotary kiln and carry out roasting prereduction；Rotary kiln outlet high temperature calcining temperature 650～750 DEG C；The amount of allocating into the basis of nickel sulfide concentrate
Depending on nickel sulfide concentrate and laterite do ore deposit mixed S and As content, make S content≤0.2%, As content≤0.005 after mixing
%；
C, 650～750 DEG C of high temperature calcinings are sent to mine heat furnace smelting obtain ferro-nickel product；Control slag melting point 1480～1500 DEG C,
Control SiO in slag250～53%, MgO 27～30%, FeO 8～11%.
Wherein, reduction coal described in said method step b is that bituminous coal and anthracite form with the proportioning of required total charcoal amount each 50%.
Wherein, nickel sulfide concentrate is carried out by step a of the present invention roasting pretreatment use recirculating fluidized bed, sintering temperature 1150～
1250℃.To remove S and As in nickel sulfide concentrate and other impurity elements of part as far as possible.The sulfur dioxide produced in roasting
Acid making system can be used to reclaim, thus improve the economic benefit of present invention process.
In step b of the present invention, the amount of allocating into of general nickel sulfide concentrate is the 0.4～5% of total ore deposit amount.
Percentage composition of the present invention is weight/mass percentage composition.
The invention has the beneficial effects as follows: the present invention by carrying out pretreatment, controlling nickel sulfide proportioning, control in advance to nickel sulfide concentrate
Reduction temperature, the aggregate measures of control metallurgical slag type so that the present invention can utilize the nickel sulfide concentrate generation higher containing S, As
Producing ferronickel for part laterite, and produce direct motion, ferronickel is up-to-standard；Thus decrease a ton nickel minerals consumption, reduce a ton nickel
Production cost, alleviates the buying pressure of laterite, enhances the motility of material matching.The present invention is nickeliferous resource comprehensive profit
With providing a kind of new thinking and method, produce for domestic ferronickel and open more vast potential for future development.
Detailed description of the invention
Laterite of the present invention produces ferronickel method with addition of nickel sulfide concentrate, comprises the steps:
A, nickel sulfide concentrate is carried out roasting pretreatment, remove the As of the S and more than 30% of more than 90% in nickel sulfide concentrate；
B, the laterite of the nickel sulfide concentrate after roasting pretreatment, aqueous 20～25% is done ore deposit and reduction coal mixing, send after mixing
Enter rotary kiln and carry out roasting prereduction；Rotary kiln outlet high temperature calcining temperature 650～750 DEG C；The amount of allocating into the basis of nickel sulfide concentrate
Depending on nickel sulfide concentrate and laterite do ore deposit mixed S and As content, make S content≤0.2%, As content≤0.005 after mixing
%；
C, 650～750 DEG C of high temperature calcinings are sent to mine heat furnace smelting obtain ferro-nickel product；Control slag melting point 1480～1500 DEG C,
Control SiO in slag250～53%, MgO 27～30%, FeO 8～11%.
The particularity that nickel sulfide ore forms due to it, is therefore mainly used in hydrometallurgy, but the above-mentioned comprehensive technological scheme of the present invention is just
Achieving nickel sulfide concentrate replaces part laterite pyrogenic process to produce the imagination of ferronickel.Nickel sulfide ore is used for pyrometallurgical smelting for this area
From the point of view of technical staff, may be easier to expect, but when the problem of reality is that nickel sulfide is allocated into smelting in laterite
Production can be enable to carry out smoothly, the most just can produce qualified ferronickel.First the present invention carries out roasting to nickel sulfide concentrate
Pretreatment, it is necessary to remove the As of the S and more than 30% of more than 90% in nickel sulfide concentrate, could be so follow-up prereduction
Carry out place mat with smelting, otherwise can not consume these sulfur, arsenic and some other impurity, product matter in prereduction and smelting
Amount can not be up to standard.The present invention needs to control the outlet temperature 650 of high temperature calcining～750 DEG C during prereduction, theoretically,
Temperature herein should be the highest more good, is more beneficial to the removal of the impurity such as sulfur, but temperature height can make employing raw material of the present invention herein
Rotary kiln skinning, the direct motion that impact produces.Step b of the present invention controls mixed sulfur, arsenic content, also basic controlling other
The content of some impurity elements, the control of content herein can be produced qualified ferronickel for smelting step and be provided support and place mat.
Slag type SiO is controlled when the present invention smelts250～53%, MgO 27～30%, FeO 8～11%, slag type determine slag fusing point,
Fusion temperature, viscosity, density, basicity and the quantity of slag etc., slag type is ensureing being smoothed out of smelting operation, metal smelting melt
Composition and quality, the aspect such as the response rate of metal and every technical-economic index of smelting has all played conclusive effect, slag type
Select the reduction melting of ferronickel is had very important significance.The present invention selects this slag, slag melting point at 1480～1500 DEG C,
Meet nickel-iron smelting temperature requirement, enable metal and slag to separate very well, produce direct motion.If MgO is higher, SiO2, FeO inclined
Low, cause slag melting point high, tapping temperature is high, and electrode is difficult to lower inserting, and thermal loss is big, and power consumption increases, thus it is suitable to affect production
OK, otherwise causing slag melting point on the low side, tapping temperature is low, and slag and metal can not separate very well, and nickel recovery reduces, production cost
Increase.
Preferably, reduction coal described in said method step b is that bituminous coal and anthracite form with the proportioning of required total charcoal amount each 50%.
The reducing property of bituminous coal is better than anthracite, beneficially the reduction of metal, but its volatile matter is high, and burning-point is low, easily ties kliner coating.Cause
This, reducing agent selects bituminous coal and anthracitic compound mode, both ensure that the reduction of the metals such as Ni, Fe, in turn ensure that rotary kiln
Do not tie kliner coating thus normally produce.
Below by embodiment, the specific embodiment of the invention is described further.
Embodiment
1, nickel sulfide concentrate is carried out roasting pretreatment, remove the As of the S and more than 30% of more than 90% in nickel sulfide concentrate.
Before and after roasting pretreatment, composition is as shown in table 1:
Composition transfer before and after table 1 Roasting of Nickel Suphide Concentrate pretreatment
| Composition % | Ni | TFe | MgO | CaO | SiO2 | P | S | As |
| Before roasting | 10.19 | 23.85 | 11.09 | 1.6 | 13.77 | 0.015 | 15.5 | 0.2 |
| After roasting | 11.84 | 27.72 | 12.89 | 1.86 | 16.0 | 0.017 | 1.55 | 0.14 |
2, ore deposit roasting prereduction is joined.It is as shown in table 2 that laterite and nickel sulfide concentrate join ore deposit situation, and the reduction coal amount of allocating into is 69kg/
Ton butt ore deposit, wherein, the bituminous coal amount of allocating into 37kg, the anthracite amount of allocating into 32kg.
Table 2 laterite and nickel sulfide concentrate join ore deposit situation
3, go out rotary kiln calcining temperature 650 DEG C, 650 DEG C of high temperature calcinings are sent to mine heat furnace smelting and obtain ferro-nickel product, product
It is shown in Table shown in 3 and table 4 with slag situation:
Table 3 product composition (%)
| Ni | Cr | Si | P | S | As |
| 12.33 | 1.47 | 3.50 | 0.027 | 0.235 | 0.049 |
Table 4 slag type
| SiO2 | MgO | FeO | Fusing point DEG C |
| 53.26 | 27.35 | 10.92 | 1485 |
The embodiment of the present invention produces direct motion, it is possible to obtain qualified ferro-nickel product.
Comparative example
Comparative example is carried out according to the process of above-described embodiment, the most except for the difference that controls rotary kiln calcining temperature 600 DEG C, finally
Product composition is as shown in table 5:
Table 5 product composition (%)
| Ni | Cr | Si | P | S | As |
| 12.33 | 1.47 | 3.50 | 0.027 | 0.403 | 0.052 |
As can be seen here, S, As in rotary kiln removal efficiency reduce, cause S and As in product exceed standard (product requirement S ＜ 0.4%,
As ＜ 0.05%).As marc type controls the most within the scope of the present invention, making metal and slag to separate very well, nickel recovery reduces,
Or electrode is difficult to lower inserting, and thermal loss is big, causes and produces not direct motion.The present invention is only briefly described with above-mentioned comparative example:
Comprehensive technological scheme of the present invention can utilize smoothly and replace part laterite to produce ferronickel containing the nickel sulfide concentrate that S, As are higher,
Ensure that production direct motion, ferronickel are up-to-standard.
Claims (3)
1. a laterite produces ferronickel method with addition of nickel sulfide concentrate, it is characterised in that comprise the steps:
A, nickel sulfide concentrate is carried out roasting pretreatment, remove the As of the S and more than 30% of more than 90% in nickel sulfide concentrate；
B, the laterite of the nickel sulfide concentrate after roasting pretreatment, aqueous 20～25% is done ore deposit and reduction coal mixing, send after mixing
Enter rotary kiln and carry out roasting prereduction；Rotary kiln outlet high temperature calcining temperature 650～750 DEG C；The amount of allocating into the basis of nickel sulfide concentrate
Depending on nickel sulfide concentrate and laterite do ore deposit mixed S and As content, make S content≤0.2%, As content≤0.005 after mixing
%；
C, 650～750 DEG C of high temperature calcinings are sent to mine heat furnace smelting obtain ferro-nickel product；Control slag melting point 1480～1500 DEG C,
Control SiO in slag250～53%, MgO 27～30%, FeO 8～11%.
Laterite the most according to claim 1 produces ferronickel method with addition of nickel sulfide concentrate, it is characterised in that: step b
Described in reduction coal be that bituminous coal and anthracite form with the proportioning of required total charcoal amount each 50%.
Laterite the most according to claim 1 produces ferronickel method with addition of nickel sulfide concentrate, it is characterised in that: step a
The middle roasting pretreatment that carried out by nickel sulfide concentrate uses recirculating fluidized bed, sintering temperature 1150～1250 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071063.0A CN104561527B (en) | 2015-02-10 | 2015-02-10 | A kind of laterite produces ferronickel method with addition of nickel sulfide concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071063.0A CN104561527B (en) | 2015-02-10 | 2015-02-10 | A kind of laterite produces ferronickel method with addition of nickel sulfide concentrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104561527A CN104561527A (en) | 2015-04-29 |
| CN104561527B true CN104561527B (en) | 2016-08-17 |
Family
ID=53078599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510071063.0A Active CN104561527B (en) | 2015-02-10 | 2015-02-10 | A kind of laterite produces ferronickel method with addition of nickel sulfide concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104561527B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536932A (en) * | 2015-12-08 | 2016-05-04 | 四川金欣机械有限公司 | High-chromium bimetal liquid composite hammer and preparation method thereof |
| CN110819791A (en) * | 2019-12-19 | 2020-02-21 | 广东广青金属科技有限公司 | Production process of nickel-containing molten iron with low iron distribution and low silicon-magnesium ratio for submerged arc furnace |
| CN110819804A (en) * | 2019-12-19 | 2020-02-21 | 广东广青金属科技有限公司 | Low iron-distribution and low silicon-magnesium ratio furnace charge for submerged arc furnace and production process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EA201370062A1 (en) * | 2011-04-15 | 2013-11-29 | Там 5, С.Л. | HYDROMETALLURGY METHOD FOR EXTRACTING ZINC FROM SULFUR ACID, USING SULFIDE ZINC CONCENTRATES |
| CN102492843A (en) * | 2011-12-22 | 2012-06-13 | 云锡元江镍业有限责任公司 | Production method through combined treatment of laterite by direct current electric furnace |
-
2015
- 2015-02-10 CN CN201510071063.0A patent/CN104561527B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104561527A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104862441B (en) | A kind of method separating and recovering ferrum in vanadium titano-magnetite, vanadium, titanium | |
| CN102373329B (en) | Method for gathering nickel and iron from laterite-nickel ores | |
| CN106636625B (en) | Using the method for rotary kiln for directly reducing RKEF combination methods production ferronickel | |
| CN101413055A (en) | Process for directly preparing nickel-iron alloy powder from laterite-nickel ore | |
| CN104451148A (en) | Production technology for smelting ferronickel from laterite-nickel ore | |
| CN103103347B (en) | Method for preparing blast furnace ironmaking burden from full-vanadium titanium magnetite concentrate | |
| CN105695850A (en) | Utilization method of nickel-contained iron ore | |
| CN103589939B (en) | A kind of method of red soil nickel ore melting, reducing and smelting Rhometal | |
| CN105734278A (en) | Treatment method of laterite-nickel ores | |
| CN108998609A (en) | The method of vanadium titano-magnetite is smelted using HIsmelt smelting reduction process | |
| CN103866076B (en) | A kind of compact type production method of austenitic stainless steel | |
| CN104561527B (en) | A kind of laterite produces ferronickel method with addition of nickel sulfide concentrate | |
| CN103924062B (en) | Fine-grained titanium concentrate prereduction technology | |
| CN108559838B (en) | Method for preparing nickel-iron alloy by mixed smelting of laterite-nickel ore | |
| CN104498667A (en) | Slagging method of sintering return mines of continuous steelmaking electric furnace | |
| CN104531983A (en) | Method used for preparing pellet ore from fluorine-containing mixed iron concentrate | |
| CN101285129B (en) | Production process of modem blast furnace nickel smelting for nickel concentrate | |
| CN101982550A (en) | Method for treating ferrochrome ore powder by microwave | |
| CN103757165B (en) | A kind of high-iron bauxite blast-furnace smelting has valency constituent element method of comprehensive utilization | |
| CN103509934B (en) | Method for producing austenitic stainless steel by using nickel and chromium ores | |
| CN108220623A (en) | A kind of method for reducing RKEF technique ferronickel energy consumptions | |
| CN106702177A (en) | Technology of direct reduction of nickel-iron particles from laterite-nickel ores in rotary kiln | |
| CN103045790A (en) | Nickel-containing steel production process | |
| CN113462891B (en) | Method for preparing stainless steel mother liquor from chromium-containing nickel iron ore pellets | |
| CN105586489A (en) | Submerged arc furnace smelting ferronickel production process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |