CN107190139A - A kind of method of Ni and Cr contained ferroalloy smelting - Google Patents
A kind of method of Ni and Cr contained ferroalloy smelting Download PDFInfo
- Publication number
- CN107190139A CN107190139A CN201710399073.6A CN201710399073A CN107190139A CN 107190139 A CN107190139 A CN 107190139A CN 201710399073 A CN201710399073 A CN 201710399073A CN 107190139 A CN107190139 A CN 107190139A
- Authority
- CN
- China
- Prior art keywords
- parts
- contained
- lateritic nickel
- pelletizing
- nickel ore
- 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.)
- Pending
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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
-
- 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
- C22B23/021—Obtaining nickel or cobalt by dry processes by reduction in solid state, e.g. by segregation 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
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/32—Obtaining chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of method of Ni and Cr contained ferroalloy smelting, this method comprises the following steps：Pelletizing is made after uniformly being mixed with chromite powder, reducing agent, binding agent, fluxing agent in the lateritic nickel ore after will be levigate；Pelletizing, which is put into rotary hearth furnace, carries out high temperature reduction, obtains metallized pellet；High temperature melting separation is carried out in metallized pellet feeding electric furnace, nickeliferous ferrochrome is obtained.The present invention, using the shaping characteristic that is easy to of lateritic nickel ore, is reduced the addition of binding agent, cheap and not easy-formation ferrochrome fine ore is molded, production cost is reduced by way of chromite and high magnesium types lateritic nickel ore mix；Whole raw materials first pass through mixing in advance, and dispensing is more uniform, shortens the heat；Pelletizing passes through high temperature prereduction, effectively reduction electric furnace smelting power consumption in rotary hearth furnace；Simultaneously because in lateritic nickel ore Ni introducing, obtain nickeliferous ferrochrome, further obtain the low cost feedstock of smelting stainless steel.
Description
Technical field
The present invention relates to ferroalloy smelting field, particularly a kind of method of Ni and Cr contained ferroalloy smelting.
Background technology
Ferrochrome can be divided into high-carbon, middle carbon, low-carbon and the class of micro- carbon four according to the difference of carbon content, mainly for the production of
Special alloy, smelting special steel, such as stainless steel, spring steel, tool steel, therefore, it is possible to be widely used in aviation, aerospace, vapour
The industrial circles such as car, shipbuilding and national defence.At present, it is stainless steel to be usually used in smelting 300 together with dilval.Ferrochrome
Main flow production technology is mineral hot furnace technique, using high-quality lump ore, coke or sintering deposit, is smelted in mineral hot furnace and obtains ferrochrome conjunction
Gold.One main points of the technique mineral hot furnace production operation seek to ensure gas permeability good in stove, the working of a furnace is normally run, because
Cheap chromite powder or can not be rarely employed in this, and production cost is higher.In addition, the Restore All of ferrochrome oxide exists
Carried out in mineral hot furnace so that melting electric consumption is higher.
During mine heat furnace smelting, there is certain requirement to melting slag fusing point and component, if desired for control MgO/Al2O3Than in
1.2 or so, therefore addition dolomite, silica etc. are needed as fluxing agent when smelting.Fluxing agent is added directly into stove from expects pipe,
It is in Multi-layers distributing with ore deposit raw material, it is impossible to ensure the uniformity of cloth, material segregation situation can be caused to occur.In addition, as stainless
In the important alloying element nickel of steel, currently marketed ferrochrome and do not include, and separately through smelting ferronickel from red soil nickel ore
Alloy, and because the tenor in lateritic nickel ore is relatively low, cause energy consumption and production cost higher.
For produced problem in current ferrochrome art production process, it is therefore desirable to the nickeliferous ferrochrome of one kind production
Method.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of method of Ni and Cr contained ferroalloy smelting.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that：
According to the present invention there is provided a kind of method of Ni and Cr contained ferroalloy smelting, comprise the following steps：
Step one：Lateritic nickel ore is subjected to levigate processing；
Step 2：The lateritic nickel ore after will be levigate uniformly mixes with chromite powder, reducing agent, binding agent, fluxing agent,
The progress pressure ball molding processing that adds water obtains pelletizing；Processing is dried in the pelletizing；
Step 3：The dried pelletizing is uniformly put into rotary hearth furnace and carries out high temperature reduction, the ball that metallizes is obtained
Group；
Step 4：The metallized pellet in step 3 is loaded in insulation batch can, feeding electric furnace at high operating temperatures
High temperature melting separation is carried out, nickeliferous ferrochrome is obtained.
Further, the laterite nickel is accounted for below the mesh of granularity 100 of the lateritic nickel ore after levigate in the step one
More than the 80% of ore deposit gross mass.Preferably, account for described red below the mesh of granularity 100 of the lateritic nickel ore after levigate in step one
More than the 90% of native nickel minerals gross mass.
Further, the granularity of chromite powder is in 100 mesh (0.15mm)~16 mesh (1mm), wherein 100 mesh (0.15mm)
~32 mesh (0.5mm) accounting more than 40%.
Further, lateritic nickel ore described in the step 2, the chromite powder, the reducing agent, the binding agent,
The fluxing agent is mixed according to following parts by weight：25-100 parts of lateritic nickel ore, 100 parts of chromite powder, reducing agent 10-30
Part, 1-10 parts of binding agent, 1-15 parts of fluxing agent.
Further, lateritic nickel ore described in the step 2, the chromite powder, the reducing agent, the binding agent,
The fluxing agent is mixed according to following parts by weight：25-80 parts of lateritic nickel ore, 100 parts of chromite powder, reducing agent 15-28
Part, 2-8 parts of binding agent, 2-15 parts of fluxing agent.
Further, lateritic nickel ore described in the step 2, the chromite powder, the reducing agent, the binding agent,
The fluxing agent is mixed according to following parts by weight：40-80 parts of lateritic nickel ore, 100 parts of chromite powder, reducing agent 18-22
Part, 4-7 parts of binding agent, 6-10 parts of fluxing agent.
Further, the pelletizing is dried in the step 2 and handled to moisture below 3%.It is preferred that
The pelletizing is dried in ground, the step 2 and handled to moisture below 2%.
Further, the dried pelletizing is uniformly put into rotary hearth furnace in the step 3,1250 DEG C-
High temperature reduction 30-50min at a temperature of 1400 DEG C.Preferably, the dried pelletizing is uniformly put into step 3 and turned
In the stove of bottom, the high temperature reduction 35-45min at a temperature of 1250 DEG C -1400 DEG C.The atmosphere of rotary hearth furnace is reducing atmosphere, for example
Carbon monoxide, hydrogen.
Further, the temperature of the metallized pellet in the insulation batch can is 1120 DEG C -1300 DEG C.
Further, the fusion temperature of electric furnace is 1500-2000 DEG C in the step 4, and fusing time is 40-150min.
Preferably, the fusion temperature of electric furnace is 1700-1800 DEG C in step 4, and fusing time is 60-120min.
Further, the content of MgO of the lateritic nickel ore is more than 18%, Al2O3Content is not more than 5%.Preferably, it is described
The content of MgO of lateritic nickel ore is more than 25%, Al2O3Content is not more than 3%.
Further, the Cr of the chromite powder2O3Content is not more than 25% more than 23%, TFe contents.
Further, the content that Cr content is 30%~47%, Ni in the nickeliferous ferrochrome of gained is 0.5%~
2.5%, the scope of iron content is 37%~48%.Preferably, in the nickeliferous ferrochrome of gained Cr content for 30%~
45%, Ni content are 0.5%~2.5%, and the scope of iron content is 41%~45%.
Further, reducing agent can be semi-coke or fine coal of the phosphorus content more than 75%, and reducing agent is levigate, it is levigate after
Reducing agent the mesh of granularity 200 below account for more than the 80% of reducing agent gross mass.Preferably, the granularity of the reducing agent after levigate
More than the 85% of reducing agent gross mass is accounted for below 200 mesh.
Further, binding agent can be bentonite；Binding agent is levigate, it is levigate after binding agent the mesh of granularity 200 with
Under account for more than the 90% of binding agent gross mass.
Further, fluxing agent can be silica；Fluxing agent is levigate, it is levigate after fluxing agent the mesh of granularity 200 below
Account for more than the 80% of fluxing agent gross mass.Preferably, fluxing agent gross mass is accounted for below the mesh of granularity 200 of the fluxing agent after levigate
More than 90%.
The present invention by lateritic nickel ore, chromite powder, reducing agent, binding agent, the quality proportioning of fluxing agent and blending powder,
The miberal powder formation material skeleton of coarseness, thin fluxing agent material is connected compound by thinner binding agent as filler
Get up, it is ensured that the pelletizing suppressed has preferable intensity.
Chromite powder belongs to sand shape material, and independent and reducing agent is difficult to be molded.Lateritic nickel ore belongs to the stronger material of retentiveness,
With water mixing after have certain viscosity, can as binding agent supplement, effectively reduce binding agent bentonite consumption；Lateritic nickel ore
Magnalium ratio (MgO and Al in more MgO, adjustment nickel chromium triangle scum is also provided2O3Mass ratio), to adjust nickel chromium iron slag ingredient.
Magnalium in nickel chromium triangle scum than scope be 0.7-1.3, preferred scope is 1.0~1.2.Magnalium than raising it is favourable
The progress reduced deeply in electric furnace, to improve the recovery rate of chromium.If content of MgO is too high, the fusing point of ferrochrome slag, slag stream are lifted
Dynamic property is deteriorated, and causes chromium recovery ratio to decline.
All raw materials (lateritic nickel ore, chromite powder, reducing agent, binding agent, fluxing agent) pass through uniform mixed processing, do not deposit
The problem of raw material segregation；In addition in pelletizing forming processes, make the contact of storeroom more close under external force, favorably
In sequential reduction and the progress smelted.
The beneficial effects of the invention are as follows：
The present invention is easy to shaping by way of chromite and high magnesium types lateritic nickel ore mix using lateritic nickel ore
Characteristic, reduces the addition of binding agent, cheap and not easy-formation ferrochrome fine ore is molded, production cost is reduced；
Whole raw materials first pass through mixing in advance, and dispensing is more uniform, shortens the heat；Pelletizing passes through high temperature prereduction in rotary hearth furnace,
Effectively reduce electric furnace smelting power consumption；Simultaneously because in lateritic nickel ore Ni introducing, obtain nickeliferous ferrochrome, further obtain
Obtained the low cost feedstock of smelting stainless steel.
Brief description of the drawings
Fig. 1 is the flow chart of the method for the Ni and Cr contained ferroalloy smelting according to embodiments of the invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings and embodiment, it is right
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.
Embodiment 1
The Cr for the chromite powder that the present embodiment is used2O3Content is that 41.24%, TFe (total iron) content is 21.0%；Laterite
The Ni of nickel minerals content is 1.70%, and content of MgO is 19.17%.
100 parts of chromite powders, 40 parts of lateritic nickel ores, 25 parts of semi-cokes, 3 parts of bentonites, 8 parts of silicas are taken, control the magnalium ratio to be
0.91.By the levigate granularity accounting 83% to below 100 mesh of lateritic nickel ore；Semi-coke of the phosphorus content more than 75% is levigate to 200
Granularity accounting 90% below mesh；The granularity accounting 92% that silica is levigate to 200 mesh.
As shown in figure 1, in step S100, by above-mentioned raw materials, setting matches mixed material more than, add after being well mixed
Enter moisture, the moisture for making mixed material is 7%, pressure ball molding processing is carried out afterwards and obtains pelletizing.In step S200, the ball pressed
After group is again less than 3% through drying and dehydrating to moisture, it is delivered to rotary hearth furnace and carries out high temperature reduction.In step S300, in rotary hearth furnace
In, pelletizing reduces 35min under 1400 DEG C of high temperature, and the hot pre-reduced pellet that discharging is obtained is fitted into insulation batch can, now in advance
The temperature of reducting pellet is 1250 DEG C.Then pre-reduced pellet is delivered into electric furnace and carries out fusing separation (step S400), 1800
45min is smelted at DEG C and realizes slag gold separation, that is, obtains nickeliferous ferrochrome and clinker.The Cr of nickeliferous ferrochrome content is
43%~45%, Ni content are 0.8%~1.1%, iron content for 41.5%~42.5%.
Embodiment 2
The Cr for the chromite powder that the present embodiment is used2O3Content is that 41.24%, TFe (total iron) content is 21.0%, laterite
The Ni of nickel minerals content is 1.70%, and content of MgO is 19.17%.
100 parts of chromite powders, 100 parts of lateritic nickel ores, 18 parts of semi-cokes, 1 part of bentonite, 10 parts of silicas are taken, magnalium ratio is controlled
For 1.20；By the levigate granularity accounting 83% to below 100 mesh of lateritic nickel ore；Semi-coke of the phosphorus content more than 75% is levigate extremely
Granularity accounting 90% below 200 mesh；The granularity accounting 92% that silica is levigate to 200 mesh.
As shown in figure 1, in step S100, by above-mentioned raw materials, setting matches mixed material more than, add after being well mixed
Enter moisture, it is 10% to make mixture moisture, pressure ball molding processing is carried out afterwards and obtains pelletizing.In step S200, the pelletizing pressed
After being again less than 2% through drying and dehydrating to moisture, it is delivered to rotary hearth furnace and carries out high temperature reduction.In step S300, in rotary hearth furnace,
Pelletizing reduces 50min at 1280 DEG C, and the hot pre-reduced pellet that discharging is obtained is fitted into insulation batch can, now pre-reduced pellet
Temperature be 1120 DEG C.Then pre-reduced pellet is delivered into electric furnace and carries out fusing separation (step S400), smelted at 1700 DEG C
80min realizes slag gold separation, that is, obtains nickeliferous ferrochrome and clinker.The Cr of nickeliferous ferrochrome content be 37%~
39%, Ni content are 2.1%~2.4%, iron content for 44.5%~45.5%.
Embodiment 3
The Cr for the chromite powder that the present embodiment is used2O3Content is that 41.24%, TFe (total iron) content is 21.0%；Laterite
The Ni of nickel minerals content is 1.70%, and content of MgO is 19.17%.
100 parts of chromite powders, 60 parts of lateritic nickel ores, 10 parts of semi-cokes, 2 parts of bentonites, 6 parts of silicas are taken, control the magnalium ratio to be
1.06.By the levigate granularity accounting 80% to below 100 mesh of lateritic nickel ore；Semi-coke of the phosphorus content more than 75% is levigate to 200
Granularity accounting 80% below mesh；The granularity accounting 80% that silica is levigate to 200 mesh.
As shown in figure 1, in step S100, by above-mentioned raw materials, setting matches mixed material more than, add after being well mixed
Enter moisture, the moisture for making mixed material is 8%, pressure ball molding processing is carried out afterwards and obtains pelletizing.In step S200, the ball pressed
After group is again less than 3% through drying and dehydrating to moisture, it is delivered to rotary hearth furnace and carries out high temperature reduction.In step S300, in rotary hearth furnace
In, pelletizing reduces 42min under 1350 DEG C of high temperature, and the hot pre-reduced pellet that discharging is obtained is fitted into insulation batch can, now in advance
The temperature of reducting pellet is 1200 DEG C.Then pre-reduced pellet is delivered into electric furnace and carries out fusing separation (step S400), 1750
60min is smelted at DEG C and realizes slag gold separation, that is, obtains nickeliferous ferrochrome and clinker.The Cr of nickeliferous ferrochrome content is
40%~42%, Ni content are 1.7%~1.9%, iron content for 43%~44%.
Embodiment 4
The Cr for the chromite powder that the present embodiment is used2O3Content is that 41.24%, TFe (total iron) content is 21.0%；Laterite
The Ni of nickel minerals content is 1.70%, and content of MgO is 19.17%.
100 parts of chromite powders, 25 parts of lateritic nickel ores, 20 parts of semi-cokes, 4 parts of bentonites, 1 part of silica are taken, control the magnalium ratio to be
0.79.By the levigate granularity accounting 83% to below 100 mesh of lateritic nickel ore；Semi-coke of the phosphorus content more than 75% is levigate to 200
Granularity accounting 90% below mesh；The granularity accounting 92% that silica is levigate to 200 mesh.
As shown in figure 1, in step S100, by above-mentioned raw materials, setting matches mixed material more than, add after being well mixed
Enter moisture, the moisture for making mixed material is 8%, pressure ball molding processing is carried out afterwards and obtains pelletizing.In step S200, the ball pressed
After group is again less than 3% through drying and dehydrating to moisture, it is delivered to rotary hearth furnace and carries out high temperature reduction.In step S300, in rotary hearth furnace
In, pelletizing reduces 30min under 1250 DEG C of high temperature, and the hot pre-reduced pellet that discharging is obtained is fitted into insulation batch can, now in advance
The temperature of reducting pellet is 1200 DEG C.Then pre-reduced pellet is delivered into electric furnace and carries out fusing separation (step S400), 2000
40min is smelted at DEG C and realizes slag gold separation, that is, obtains nickeliferous ferrochrome and clinker.The Cr of nickeliferous ferrochrome content is
45%~47%, Ni content are 0.7%~0.9%, iron content for 37%~39%.
Embodiment 5
The Cr for the chromite powder that the present embodiment is used2O3Content is that 41.24%, TFe (total iron) content is 21.0%；Laterite
The Ni of nickel minerals content is 1.70%, and content of MgO is 19.17%.
100 parts of chromite powders, 40 parts of lateritic nickel ores, 30 parts of semi-cokes, 10 parts of bentonites, 15 parts of silicas are taken, magnalium ratio is controlled
For 0.91.By the levigate granularity accounting 83% to below 100 mesh of lateritic nickel ore；Semi-coke of the phosphorus content more than 75% is levigate extremely
Granularity accounting 90% below 200 mesh；The granularity accounting 92% that silica is levigate to 200 mesh.
As shown in figure 1, in step S100, by above-mentioned raw materials, setting matches mixed material more than, add after being well mixed
Enter moisture, the moisture for making mixed material is 7%, pressure ball molding processing is carried out afterwards and obtains pelletizing.In step S200, the ball pressed
After group is again less than 3% through drying and dehydrating to moisture, it is delivered to rotary hearth furnace and carries out high temperature reduction.In step S300, in rotary hearth furnace
In, pelletizing reduces 50min under 1400 DEG C of high temperature, and the hot pre-reduced pellet that discharging is obtained is fitted into insulation batch can, now in advance
The temperature of reducting pellet is 1300 DEG C.Then pre-reduced pellet is delivered into electric furnace and carries out fusing separation (step S400), 1500
150min is smelted at DEG C and realizes slag gold separation, that is, obtains nickeliferous ferrochrome and clinker.The Cr of nickeliferous ferrochrome content is
39%~41%, Ni content are 1.0%~1.2%, iron content for 43%~45%.
The chromite powder that embodiment 1-5 is used originates from South Africa.
The granularity for the chromite powder that embodiment 1-5 is used is in 100 mesh (0.15mm)~16 mesh (1mm), wherein 100 mesh
(0.15mm)~32 mesh (0.5mm) accounting more than 40%.
The atmosphere for the rotary hearth furnace that embodiment 1-5 is used is reducing atmosphere, such as carbon monoxide, hydrogen.
The foregoing is only presently preferred embodiments of the present invention, not for limit the present invention practical range；If do not taken off
From the spirit and scope of the present invention, the present invention is modified or equivalent substitution, all should covered in the claims in the present invention
Among protection domain.
Claims (10)
1. a kind of method of Ni and Cr contained ferroalloy smelting, it is characterised in that comprise the following steps：
Step one：Lateritic nickel ore is subjected to levigate processing；
Step 2：The lateritic nickel ore after will be levigate uniformly mixes with chromite powder, reducing agent, binding agent, fluxing agent, added water
Carry out pressure ball molding processing and obtain pelletizing；Processing is dried in the pelletizing；
Step 3：The dried pelletizing is uniformly put into rotary hearth furnace and carries out high temperature reduction, metallized pellet is obtained；
Step 4：The metallized pellet in step 3 is loaded at high operating temperatures and carried out in insulation batch can, feeding electric furnace
High temperature melting is separated, and obtains nickeliferous ferrochrome.
2. the method for Ni and Cr contained ferroalloy smelting according to claim 1, it is characterised in that after levigate in the step one
The lateritic nickel ore the mesh of granularity 100 below account for more than the 80% of the lateritic nickel ore gross mass.
3. the method for Ni and Cr contained ferroalloy smelting according to claim 1, it is characterised in that red described in the step 2
Native nickel minerals, the chromite powder, the reducing agent, the binding agent, the fluxing agent are mixed according to following parts by weight：
25-100 parts of lateritic nickel ore, 100 parts of chromite powder, 10-30 parts of reducing agent, 1-10 parts of binding agent, 1-15 parts of fluxing agent.
4. the method for Ni and Cr contained ferroalloy smelting according to claim 3, it is characterised in that red described in the step 2
Native nickel minerals, the chromite powder, the reducing agent, the binding agent, the fluxing agent are mixed according to following parts by weight：
25-80 parts of lateritic nickel ore, 100 parts of chromite powder, 15-28 parts of reducing agent, 2-8 parts of binding agent, 2-15 parts of fluxing agent.
5. the method for Ni and Cr contained ferroalloy smelting according to claim 1, it is characterised in that will be described in the step 2
Pelletizing, which is dried, to be handled to moisture below 3%.
6. the method for Ni and Cr contained ferroalloy smelting according to claim 1, it is characterised in that by drying in the step 3
The pelletizing afterwards is uniformly put into rotary hearth furnace, the high temperature reduction 30-50min at a temperature of 1250 DEG C -1400 DEG C.
7. the method for Ni and Cr contained ferroalloy smelting according to claim 1, it is characterised in that in the insulation batch can
The temperature of the metallized pellet is 1120 DEG C -1300 DEG C.
8. the method for Ni and Cr contained ferroalloy smelting according to claim 1, it is characterised in that electric furnace in the step 4
Fusion temperature is 1500-2000 DEG C, and fusing time is 40-150min.
9. the method for the Ni and Cr contained ferroalloy smelting according to any one of claim 1-8, it is characterised in that the laterite
The content of MgO of nickel minerals is more than 18%, Al2O3Content is not more than 5%.
10. the method for the Ni and Cr contained ferroalloy smelting according to any one of claim 1-8, it is characterised in that the chromium
The Cr of Iron Ore Powder2O3Content is not more than 25% more than 23%, TFe contents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710399073.6A CN107190139A (en) | 2017-05-31 | 2017-05-31 | A kind of method of Ni and Cr contained ferroalloy smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710399073.6A CN107190139A (en) | 2017-05-31 | 2017-05-31 | A kind of method of Ni and Cr contained ferroalloy smelting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107190139A true CN107190139A (en) | 2017-09-22 |
Family
ID=59876079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710399073.6A Pending CN107190139A (en) | 2017-05-31 | 2017-05-31 | A kind of method of Ni and Cr contained ferroalloy smelting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107190139A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108385009A (en) * | 2018-04-13 | 2018-08-10 | 盐城市鑫洋电热材料有限公司 | A kind of preparation method of ferrochrome molybdenum alloy |
| CN108385032A (en) * | 2018-04-16 | 2018-08-10 | 盐城市鑫洋电热材料有限公司 | A kind of alloy and its application |
| CN108441742A (en) * | 2018-04-13 | 2018-08-24 | 盐城市鑫洋电热材料有限公司 | A kind of ferrochrome molybdenum alloy and application thereof |
| CN108531822A (en) * | 2018-04-16 | 2018-09-14 | 盐城市鑫洋电热材料有限公司 | A kind of preparation method of alloy |
| CN109136440A (en) * | 2018-08-06 | 2019-01-04 | 万国雄 | A kind of high carbon ferro-chrome composition and its smelting process |
| CN111621650A (en) * | 2020-06-12 | 2020-09-04 | 中南大学 | Method for extracting metallic nickel from laterite-nickel ore |
| CN112210664A (en) * | 2020-10-15 | 2021-01-12 | 中南大学 | Method for strengthening pre-reduction of chromite pellets |
| CN112226615A (en) * | 2020-10-15 | 2021-01-15 | 中南大学 | Comprehensive utilization method of stainless steel solid waste |
| CN113414386A (en) * | 2021-05-28 | 2021-09-21 | 中南大学 | Method for preparing block alloy by gradient reduction of oxide at low temperature |
| CN113462891A (en) * | 2021-07-23 | 2021-10-01 | 贵州大学 | Method for preparing stainless steel mother liquor from chromium-containing nickel iron ore pellets |
| CN113774216A (en) * | 2021-07-29 | 2021-12-10 | 江苏沙钢集团有限公司 | Preparation method of pellets using laterite-nickel ore as pellet binder |
| CN115558816A (en) * | 2022-09-01 | 2023-01-03 | 广东广青金属科技有限公司 | Nickel-chromium alloy smelting method and system by utilizing sensible heat of flue gas and furnace slag of submerged arc furnace |
| CN115772590A (en) * | 2022-11-30 | 2023-03-10 | 广西北港新材料有限公司 | Method for recycling steel washing sand in submerged arc furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242259A (en) * | 2011-06-29 | 2011-11-16 | 中南大学 | Preparation process of low-grade laterite nickel ore oxidized pellet |
| CN104313227A (en) * | 2014-10-29 | 2015-01-28 | 北京华福神雾工业炉有限公司 | Method and system for carbon thermal reduction by using waste heat of iron-containing melt |
| CN106191431A (en) * | 2016-09-13 | 2016-12-07 | 江苏省冶金设计院有限公司 | A kind of reduction reaction system and method for the aqueous pelletizing of lateritic nickel ore |
-
2017
- 2017-05-31 CN CN201710399073.6A patent/CN107190139A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242259A (en) * | 2011-06-29 | 2011-11-16 | 中南大学 | Preparation process of low-grade laterite nickel ore oxidized pellet |
| CN104313227A (en) * | 2014-10-29 | 2015-01-28 | 北京华福神雾工业炉有限公司 | Method and system for carbon thermal reduction by using waste heat of iron-containing melt |
| CN106191431A (en) * | 2016-09-13 | 2016-12-07 | 江苏省冶金设计院有限公司 | A kind of reduction reaction system and method for the aqueous pelletizing of lateritic nickel ore |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108441742A (en) * | 2018-04-13 | 2018-08-24 | 盐城市鑫洋电热材料有限公司 | A kind of ferrochrome molybdenum alloy and application thereof |
| CN108385009A (en) * | 2018-04-13 | 2018-08-10 | 盐城市鑫洋电热材料有限公司 | A kind of preparation method of ferrochrome molybdenum alloy |
| CN108385032A (en) * | 2018-04-16 | 2018-08-10 | 盐城市鑫洋电热材料有限公司 | A kind of alloy and its application |
| CN108531822A (en) * | 2018-04-16 | 2018-09-14 | 盐城市鑫洋电热材料有限公司 | A kind of preparation method of alloy |
| CN109136440A (en) * | 2018-08-06 | 2019-01-04 | 万国雄 | A kind of high carbon ferro-chrome composition and its smelting process |
| CN111621650A (en) * | 2020-06-12 | 2020-09-04 | 中南大学 | Method for extracting metallic nickel from laterite-nickel ore |
| CN112226615B (en) * | 2020-10-15 | 2021-11-12 | 中南大学 | Comprehensive utilization method of stainless steel solid waste |
| CN112210664A (en) * | 2020-10-15 | 2021-01-12 | 中南大学 | Method for strengthening pre-reduction of chromite pellets |
| CN112226615A (en) * | 2020-10-15 | 2021-01-15 | 中南大学 | Comprehensive utilization method of stainless steel solid waste |
| CN112210664B (en) * | 2020-10-15 | 2021-11-12 | 中南大学 | Method for strengthening pre-reduction of chromite pellets |
| CN113414386A (en) * | 2021-05-28 | 2021-09-21 | 中南大学 | Method for preparing block alloy by gradient reduction of oxide at low temperature |
| CN113462891A (en) * | 2021-07-23 | 2021-10-01 | 贵州大学 | Method for preparing stainless steel mother liquor from chromium-containing nickel iron ore pellets |
| CN113774216A (en) * | 2021-07-29 | 2021-12-10 | 江苏沙钢集团有限公司 | Preparation method of pellets using laterite-nickel ore as pellet binder |
| CN115558816A (en) * | 2022-09-01 | 2023-01-03 | 广东广青金属科技有限公司 | Nickel-chromium alloy smelting method and system by utilizing sensible heat of flue gas and furnace slag of submerged arc furnace |
| CN115558816B (en) * | 2022-09-01 | 2023-09-19 | 广东广青金属科技有限公司 | Smelting method and system for nichrome by utilizing sensible heat of flue gas and slag of submerged arc furnace |
| CN115772590A (en) * | 2022-11-30 | 2023-03-10 | 广西北港新材料有限公司 | Method for recycling steel washing sand in submerged arc furnace |
| CN115772590B (en) * | 2022-11-30 | 2024-03-08 | 广西北港新材料有限公司 | Method for recycling steel washing sand in submerged arc furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107190139A (en) | A kind of method of Ni and Cr contained ferroalloy smelting | |
| CN106086467B (en) | A kind of method and system for extracting nickel oxide using lateritic nickel ore | |
| CN105132674B (en) | The method for preparing ferrochrome | |
| CN103045859B (en) | A kind of chromite fine ore sintering processing method produced for stainless steel | |
| CN107208181B (en) | The smelting process of saprolife ore deposit | |
| CN101845530A (en) | Process for producing nickel-containing iron alloy from laterite on fluidized bed | |
| CN105463185A (en) | Double-combined method for producing ferronickel through magnetic separation-rotary kiln electric furnace (RKEF) | |
| CN109266848A (en) | Prepare the binder of oxidation of chromite pelletizing | |
| CN106967879A (en) | A kind of preparation method of stainless steel smelting acid pellet | |
| CN107012385A (en) | The preparation method of high nitrogen VN alloy | |
| CN108559838B (en) | Method for preparing nickel-iron alloy by mixed smelting of laterite-nickel ore | |
| CN101967570A (en) | Method for producing ferro-nickel alloy from red soil nickel ore | |
| CN108484180A (en) | A method of preparing high grade refractory using nickel-iron smelting slag | |
| CN105899690A (en) | Method for producing manganese containing ferroalloy | |
| CN110699506A (en) | Preparation method for preparing high-carbon ferrochrome from chromium ore powder | |
| CN106319124A (en) | Preparing method for ferrochrome silicon alloy | |
| CN103045790B (en) | Containing nickel steel production technology | |
| CN103509934B (en) | Method for producing austenitic stainless steel by using nickel and chromium ores | |
| CN107254590A (en) | A kind of method that W metallurgy is refined using low-grade tungsten mining and metallurgy | |
| CN115404339B (en) | Method for developing and utilizing oolitic high-phosphorus iron ore | |
| CN113549726B (en) | Method for strengthening gas-based solid reduction of chromite | |
| CN103074543A (en) | Manufacturing technology of steel containing molybdenum | |
| CN113215389B (en) | Method for enriching niobium and titanium in iron-containing niobium-titanium ore and application of nickel-containing substance | |
| CN113564351A (en) | Method for preparing chromium-containing nickel iron ore oxidized pellets by using chromite and laterite-nickel ore | |
| CN103882223B (en) | A kind of method improving red soil nickel ore bursting temperature of pellet ores |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |