CN108642225A - A method of preparing dilval and aluminate cement admixture using vessel slag - Google Patents
A method of preparing dilval and aluminate cement admixture using vessel slag Download PDFInfo
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- CN108642225A CN108642225A CN201810461695.1A CN201810461695A CN108642225A CN 108642225 A CN108642225 A CN 108642225A CN 201810461695 A CN201810461695 A CN 201810461695A CN 108642225 A CN108642225 A CN 108642225A
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- China
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- quality
- vessel slag
- slag
- range
- dedusting ash
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- 239000002893 slag Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000004568 cement Substances 0.000 title claims abstract description 16
- 150000004645 aluminates Chemical class 0.000 title claims abstract description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 98
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 47
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 36
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims description 23
- 239000008188 pellet Substances 0.000 claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 22
- 229910052799 carbon Inorganic materials 0.000 claims description 19
- 229910052681 coesite Inorganic materials 0.000 claims description 14
- 229910052906 cristobalite Inorganic materials 0.000 claims description 14
- 239000000395 magnesium oxide Substances 0.000 claims description 14
- 239000000377 silicon dioxide Substances 0.000 claims description 14
- 229910052682 stishovite Inorganic materials 0.000 claims description 14
- 229910052905 tridymite Inorganic materials 0.000 claims description 14
- 238000003723 Smelting Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 10
- 229910052593 corundum Inorganic materials 0.000 claims description 10
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 10
- 238000010891 electric arc Methods 0.000 claims description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 71
- 229910052742 iron Inorganic materials 0.000 abstract description 33
- 229910000831 Steel Inorganic materials 0.000 abstract description 9
- 239000010959 steel Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229910001710 laterite Inorganic materials 0.000 abstract description 5
- 239000011504 laterite Substances 0.000 abstract description 5
- 229910000863 Ferronickel Inorganic materials 0.000 description 7
- 239000004615 ingredient Substances 0.000 description 6
- 239000003818 cinder Substances 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 238000007731 hot pressing Methods 0.000 description 5
- 241001062472 Stokellia anisodon Species 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B11/00—Making pig-iron other than in blast furnaces
- C21B11/10—Making pig-iron other than in blast furnaces in electric furnaces
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
- C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
- C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The present invention discloses a kind of method preparing dilval and aluminate cement admixture using vessel slag, it solves iron and steel enterprise's vessel slag and accumulates pollution problem, solves nickeliferous very low and the higher laterite of iron content Utilizing question simultaneously, expand the resource of nickel, production cost is reduced, support is provided for iron and steel enterprise's energy-saving and emission-reduction Green Development.
Description
Technical field
The invention belongs to slag comprehensive treatment technique fields more particularly to a kind of utilization vessel slag to prepare dilval and aluminium
The method of acid salt cement admixture.
Background technology
Vessel slag is the industrial solid wastes generated during a kind of pneumatic steelmaking.It often produces 1 ton of steel and wants by-product 0.1
~0.13 ton of slag, 1350 DEG C~1450 DEG C or so of temperature.Wherein also contain 10~30% full iron TFe and a large amount of beneficial elements
Calcium, magnesium and silicon etc..Currently, most iron and steel enterprise generally uses simple magnetic separation, remaining tailings to sell water supply in addition to small part
It other than mud factory, is largely dumped and abandons, cause environmental pollution, land seizure and the wasting of resources.The bored method of heat is that just have the nearly more than ten years
Pretreatment of slag technique；Since the bored method operation of heat carries out in workshop, dust is greatly reduced to extraneous pollution, bored slag bath has
Closed circuit supply and drain water system also avoids the pollution of high alkalinity water.
Nickel is grand strategy goods and materials, and produces the important source material of stainless steel, as stainless steel is in industry and the people's livelihood
Using being growing, the demand of nickel increases rapidly, since the nickel of production stainless steel is in addition to electrolytic nickel, is mainly carried by ferronickel
For so the production of ferronickel is most important.Existing ferronickel production is to use oxide ore (laterite) pyrogenic attack, by electric furnace or
Blast furnace reduction melting, obtains nickel-containing molten iron.But due to resource constraint, high limited of nickel grade in general laterite, and it is a large amount of
Grade is low to be then difficult with containing josephinite, and the ferronickel produced is nickeliferous too low, thus can not utilize for a long time, there is an urgent need to develop
The ferronickel to meet the market requirement can be produced using poor ferronickel ore by going out.
Metal iron charge how is effectively recycled from vessel slag and utilizes its high-temperature residual heat, while can make poor josephinite again
It by high added value is used, is the key that reduce slag pollution, increase Business Economic Benefit.
Invention content
For the defect of currently available technology, the technical problem to be solved by the present invention is to utilize iron and steel enterprise's melt converter
The waste heat of slag, using poor josephinite as raw material, blast furnace dedusting ash is that reducing agent produces the blending of nickeliferous molten iron and aluminate cement
Material solves iron and steel enterprise's vessel slag and accumulates pollution problem, solves nickeliferous very low and the higher laterite of iron content utilization and ask
Topic expands the resource of nickel, reduces production cost, support is provided for iron and steel enterprise's energy-saving and emission-reduction Green Development.
Purpose of the present invention is to what is realized by following technical solution：
A method of preparing dilval and aluminate cement admixture, it is characterised in that include the following steps：
The dispensing of lateritic nickel ore and dedusting ash-heat of mixing suppresses balling-up-drying and preheating-loading furnace bottom-melt
Vessel slag hot charging-high-temperature electric arc smelting-slag gold separation；
The dispensing, according to the chemistry of melt vessel slag chemical composition at the beginning, lateritic nickel ore and blast furnace dedusting ash at
Point, i.e., relationship is as foundation, institute between the oxide content of reducing agent C content and vessel slag, lateritic nickel ore and blast furnace dedusting ash
The oxide for the blast furnace dedusting ash stated is ferriferous oxide, nickel oxide, manganese oxide and phosphorus pentoxide；Dispensing slag control basicity R4
=(CaO+MgO)/(SiO2+Al2O3)=0.9~1.2；
Carbon containing gross mass relational expression is added：MC＞ K × (α × (M1+M2+M3)+β×(M4+M5+M6)+λ× (M7+M8+M9)+
ε×(M10+M11+M12)+ζ×(M13+M14+M15))；
Wherein, MCFor the carbon containing total amount of addition, kg；
K is phosphorus content coefficient of excess, in the range of 1.3~1.5；
α is that carbon restores Fe2O3Related coefficient, in the range of 0.20~0.25；
M1For Fe in vessel slag2O3Quality, kg；
M2For Fe in blast furnace dedusting ash2O3Quality, kg,
M3For Fe in lateritic nickel ore2O3Quality, kg；
β is that carbon restores FeO related coefficients, in the range of 0.162~0.172；
M4For the quality of FeO in vessel slag, kg；
M5For the quality of FeO in blast furnace dedusting ash, kg；
M6For the quality of FeO in lateritic nickel ore, kg；
λ is that carbon restores P2O5Related coefficient, in the range of 0.413~0.433；
M7For P in vessel slag2O5Quality, kg；
M8For P in blast furnace dedusting ash2O5Quality, kg；
M9For P in lateritic nickel ore2O5Quality, kg；
ε is that carbon restores MnO related coefficients, in the range of 0.164~0.174；
M10For the quality of MnO in vessel slag, kg；
M11For the quality of MnO in blast furnace dedusting ash, kg；
M12For the quality of MnO in lateritic nickel ore, kg；
ζ is that carbon restores NiO related coefficients, in the range of 0.127~0.227；
M13For the quality of NiO in vessel slag, kg；
M14For the quality of NiO in blast furnace dedusting ash, kg；
M15For the quality of NiO in lateritic nickel ore, kg；
The heat of mixing suppresses balling-up, and lateritic nickel ore, blast furnace dedusting ash and the pitch heat of mixing are pressed into carbon containing ferronickel
Pelletizing；Lateritic nickel ore, blast furnace dedusting ash mass content according to above-mentioned determination, then add account for mass fraction be 2%-5% drip
It is green；
The drying and preheating, it is 200-500 that electric furnace, which generates high-temperature flue gas and nickeliferous iron-carbon pellets are preheating to temperature range,
℃；
The melt vessel slag hot charging temperature THot charging=T0+K1×w1+K2×(CaO/SiO2)-K3×w2；Wherein THot chargingFor
Vessel slag hot charging temperature value, DEG C；
T0For vessel slag hot charging temperature initial value, DEG C, in the range of 1300~1325 DEG C,
K1Related coefficient is influenced on hot charging temperature for content of MgO, in the range of 8.4~9.5；
K2For CaO/SiO2Hot charging temperature influences related coefficient, in the range of 19.4~29.4；
K3Related coefficient is influenced on hot charging temperature for FeO contents, in the range of 1.06~2.05；
W1For the mass fraction of content of magnesia in vessel slag；
W2For the mass fraction of ferrous oxide content in vessel slag；
The high-temperature electric arc smelting temperature control range is 1350~1450 DEG C.
The lateritic nickel ore, (SiO2+CaO+MgO)/Al2O3≤ 0.35, Fe/Ni >=30, granularity<3mm accounts for quality
Than 80% or more, biodiversity content is less than 2% or less.
The blast furnace dedusting ash, carbon mass content are more than 30%, granularity<0.174mm accounts for 80% or more mass ratio, water
Mass content is divided to be less than 2% or less.
The present invention solves iron and steel enterprise vessel slag and accumulates pollution problem, while solving nickeliferous very low and iron content is higher
The Utilizing question of laterite expands the resource of nickel, reduces production cost, branch is provided for iron and steel enterprise's energy-saving and emission-reduction Green Development
Support.
Specific implementation mode
It is illustrated with reference to specific embodiment：
Embodiment 1
Lateritic nickel ore, blast furnace dedusting ash and the pitch heat of mixing are pressed into nickeliferous iron-carbon pellets；Lateritic nickel ore, blast furnace dedusting
The content of ash is according to MC＞ K × (α × (M1+M2+M3)+β×(M4+M5+M6)+λ× (M7+M8+M9)+ε×(M10+M11+M12)+ζ
×(M13+M14+M15)) determining that mixed ingredients, addition mass fraction are 2% pitch, nickeliferous iron-carbon pellets are made in hot pressing.Electric furnace produces
It is 200 DEG C that nickeliferous iron-carbon pellets are preheating to temperature range by raw high-temperature flue gas.Nickeliferous iron-carbon pellets will be preheated and be packed into electric arc furnaces bottom
Melt vessel slag is packed into inside the ladle with attemperator after converter smelting, is transported by electric furnace by ladle by portion,
Then hot charging enters in electric furnace, uses electric furnace graphite electrode heat form to modify smelting process for vessel slag and provides heat, by clinker
Basicity is adjusted to R=(CaO+MgO)/(SiO2+Al2O3)=1.1 smelt 70min when molten slag modifies, and wherein FeO contents drop
As low as 1.62%, upper layer is the admixture of high-quality aluminate cement in final electric furnace, and lower layer is good nickel-containing molten iron, finishing slag and
Molten iron distinguishes electric furnace cinder notch and the outflow of iron mouth.
Embodiment 2
Lateritic nickel ore, blast furnace dedusting ash and the pitch heat of mixing are pressed into nickeliferous iron-carbon pellets；Lateritic nickel ore, blast furnace dedusting
The content of ash is according to MC＞ K × (α × (M1+M2+M3)+β×(M4+M5+M6+λ×(M7+M8+M9) +ε×(M10+M11+M12)+ζ×
(M13+M14+M15)) determining that mixed ingredients, addition mass fraction are 5% pitch, nickeliferous iron-carbon pellets are made in hot pressing.Electric furnace generates
It is 500 DEG C that nickeliferous iron-carbon pellets are preheating to temperature range by high-temperature flue gas.Nickeliferous iron-carbon pellets will be preheated and be packed into electric arc furnace bottom,
Melt vessel slag is packed into inside the ladle with attemperator after converter smelting, is transported by electric furnace by ladle, so
Hot charging enters in electric furnace afterwards, uses electric furnace graphite electrode heat form to modify smelting process for vessel slag and provides heat, by clinker alkali
Degree is adjusted to R=(CaO+MgO)/(SiO2+Al2O3)=1.0 smelt 30min when molten slag modifies, and wherein FeO contents drop
As low as 1.92%, upper layer is the admixture of high-quality aluminate cement in final electric furnace, and lower layer is good nickel-containing molten iron, finishing slag and
Molten iron distinguishes electric furnace cinder notch and the outflow of iron mouth.
Embodiment 3
Lateritic nickel ore, blast furnace dedusting ash and the pitch heat of mixing are pressed into nickeliferous iron-carbon pellets；Lateritic nickel ore, blast furnace dedusting
The content of ash is according to MC＞ K × (α × (M1+M2+M3)+β×(M4+M5+M6)+λ× (M7+M8+M9)+ε×(M10+M11+M12)+ζ
×(M13+M14+M15)) determining that mixed ingredients, addition mass fraction are 3% pitch, nickeliferous iron-carbon pellets are made in hot pressing.Electric furnace produces
It is 300 DEG C that nickeliferous iron-carbon pellets are preheating to temperature range by raw high-temperature flue gas.Nickeliferous iron-carbon pellets will be preheated and be packed into electric arc furnaces bottom
Melt vessel slag is packed into inside the ladle with attemperator after converter smelting, is transported by electric furnace by ladle by portion,
Then hot charging enters in electric furnace, uses electric furnace graphite electrode heat form to modify smelting process for vessel slag and provides heat, by clinker
Basicity is adjusted to R=(CaO+MgO)/(SiO2+Al2O3)=1.2 smelt 60min when molten slag modifies, and wherein FeO contents drop
As low as 1.22%, upper layer is the admixture of high-quality aluminate cement in final electric furnace, and lower layer is good nickel-containing molten iron, finishing slag and
Molten iron distinguishes electric furnace cinder notch and the outflow of iron mouth.
Embodiment 4
Lateritic nickel ore, blast furnace dedusting ash and the pitch heat of mixing are pressed into nickeliferous iron-carbon pellets；Lateritic nickel ore, blast furnace dedusting
The content of ash is according to MC＞ K × (α × (M1+M2+M3)+β×(M4+M5+M6)+λ× (M7+M8+M9)+ε×(M10+M11+M12)+ζ
×(M13+M14+M15)) determining that mixed ingredients, addition mass fraction are 4% pitch, nickeliferous iron-carbon pellets are made in hot pressing.Electric furnace produces
It is 400 DEG C that nickeliferous iron-carbon pellets are preheating to temperature range by raw high-temperature flue gas.Nickeliferous iron-carbon pellets will be preheated and be packed into electric arc furnaces bottom
Melt vessel slag is packed into inside the ladle with attemperator after converter smelting, is transported by electric furnace by ladle by portion,
Then hot charging enters in electric furnace, uses electric furnace graphite electrode heat form to modify smelting process for vessel slag and provides heat, by clinker
Basicity is adjusted to R=(CaO+MgO)/(SiO2+Al2O3)=0.9 smelts 80min when molten slag modifies, and wherein FeO contents drop
As low as 1.12%, upper layer is the admixture of high-quality aluminate cement in final electric furnace, and lower layer is good nickel-containing molten iron, finishing slag and
Molten iron distinguishes electric furnace cinder notch and the outflow of iron mouth.
Embodiment 5
Lateritic nickel ore, blast furnace dedusting ash and the pitch heat of mixing are pressed into nickeliferous iron-carbon pellets；Lateritic nickel ore, blast furnace dedusting
The content of ash is according to MC＞ K × (α × (M1+M2+M3)+β×(M4+M5+M6)+λ× (M7+M8+M9)+ε×(M10+M11+M12)+ζ
×(M13+M14+M15)) determining that mixed ingredients, addition mass fraction are 5% pitch, nickeliferous iron-carbon pellets are made in hot pressing.Electric furnace produces
It is 300 DEG C that nickeliferous iron-carbon pellets are preheating to temperature range by raw high-temperature flue gas.Nickeliferous iron-carbon pellets will be preheated and be packed into electric arc furnaces bottom
Melt vessel slag is packed into inside the ladle with attemperator after converter smelting, is transported by electric furnace by ladle by portion,
Then hot charging enters in electric furnace, uses electric furnace graphite electrode heat form to modify smelting process for vessel slag and provides heat, by clinker
Basicity is adjusted to R=(CaO+MgO)/(SiO2+Al2O3)=1.05 smelt 100min, wherein FeO contents when molten slag modifies
It is reduced to 1.02%, upper layer is the admixture of high-quality aluminate cement in final electric furnace, and lower layer is good nickel-containing molten iron, finishing slag
Distinguish electric furnace cinder notch and the outflow of iron mouth with molten iron.
Admixture ingredient/% of 1 aluminate cement of table
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| CaO | 37.2 | 41.5 | 42.5 | 36.7 | 40.5 |
| SiO2 | 15.7 | 19.65 | 15.59 | 16.2 | 15.17 |
| MgO | 9.67 | 7.17 | 10.88 | 9.67 | 9.67 |
| Al2O3 | 26.5 | 28.7 | 28.9 | 35.3 | 32.3 |
| FeO | 1.63 | 1.98 | 1.26 | 1.14 | 1.05 |
| R | 1.1 | 1.0 | 1.2 | 0.9 | 1.05 |
2 molten iron main component of table/%
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Fe | 92.01 | 91.01 | 91.83 | 91.34 | 90.78 |
| Ni | 1.91 | 1.81 | 1.76 | 1.66 | 2.01 |
| Si | 0.86 | 0.86 | 0.86 | 0.86 | 0.86 |
| C | 4.584 | 4.53 | 4.61 | 4.55 | 4.45 |
| S | 0.21 | 0.23 | 0.24 | 0.26 | 0.27 |
| P | 0.18 | 0.21 | 0.22 | 0.23 | 0.24 |
From the point of view of result above, the present invention can be achieved ferriferous oxide content in the clinker of upper layer and be less than 2%, be high-quality aluminate
The admixture of cement, Ni contents are more than 1.6 or more nickel-containing molten iron in lower layer's molten iron.
Claims (3)
1. a kind of method preparing dilval and aluminate cement admixture using vessel slag, it is characterised in that including following step
Suddenly：
The dispensing of lateritic nickel ore and dedusting ash-heat of mixing suppresses balling-up-drying and preheating-loading furnace bottom-melt converter
Slag hot charging-high-temperature electric arc smelting-slag gold separation；
The dispensing, according to chemical composition, the chemical composition of lateritic nickel ore and blast furnace dedusting ash of melt vessel slag at the beginning, i.e.,
Reducing agent C content and vessel slag, lateritic nickel ore and blast furnace dedusting ash oxide content between relationship as foundation, the height
The oxide of stove dedusting ash is ferriferous oxide, nickel oxide, manganese oxide and phosphorus pentoxide；Dispensing slag control basicity R4=(CaO
+MgO)/(SiO2+Al2O3)=0.9~1.2；
Carbon containing gross mass relational expression is added：MC＞ K × (α × (M1+M2+M3)+β×(M4+M5+M6)+λ×(M7+M8+M9)+ε×
(M10+M11+M12)+ζ×(M13+M14+M15))；
Wherein, MCFor the carbon containing total amount of addition, kg；
K is phosphorus content coefficient of excess, in the range of 1.3~1.5；
α is that carbon restores Fe2O3Related coefficient, in the range of 0.20~0.25；
M1For Fe in vessel slag2O3Quality, kg；
M2For Fe in blast furnace dedusting ash2O3Quality, kg,
M3For Fe in lateritic nickel ore2O3Quality, kg；
β is that carbon restores FeO related coefficients, in the range of 0.162~0.172；
M4For the quality of FeO in vessel slag, kg；
M5For the quality of FeO in blast furnace dedusting ash, kg；
M6For the quality of FeO in lateritic nickel ore, kg；
λ is that carbon restores P2O5Related coefficient, in the range of 0.413~0.433；
M7For P in vessel slag2O5Quality, kg；
M8For P in blast furnace dedusting ash2O5Quality, kg；
M9For P in lateritic nickel ore2O5Quality, kg；
ε is that carbon restores MnO related coefficients, in the range of 0.164~0.174；
M10For the quality of MnO in vessel slag, kg；
M11For the quality of MnO in blast furnace dedusting ash, kg；
M12For the quality of MnO in lateritic nickel ore, kg；
ζ is that carbon restores NiO related coefficients, in the range of 0.127~0.227；
M13For the quality of NiO in vessel slag, kg；
M14For the quality of NiO in blast furnace dedusting ash, kg；
M15For the quality of NiO in lateritic nickel ore, kg；
The heat of mixing suppresses balling-up, and lateritic nickel ore, blast furnace dedusting ash and the pitch heat of mixing are pressed into nickeliferous iron-carbon pellets；
Lateritic nickel ore, blast furnace dedusting ash mass content according to above-mentioned determination, then add account for mass fraction be 2%-5% pitch；
The drying and preheating, it is 200-500 DEG C that electric furnace, which generates high-temperature flue gas and nickeliferous iron-carbon pellets are preheating to temperature range,；
The melt vessel slag hot charging temperature THot charging=T0+K1×w1+K2×(CaO/SiO2)-K3×w2；
Wherein THot chargingFor vessel slag hot charging temperature value, DEG C；
T0For vessel slag hot charging temperature initial value, DEG C, in the range of 1300~1325 DEG C,
K1Related coefficient is influenced on hot charging temperature for content of MgO, in the range of 8.4~9.5；
K2For CaO/SiO2Hot charging temperature influences related coefficient, in the range of 19.4~29.4；
K3Related coefficient is influenced on hot charging temperature for FeO contents, in the range of 1.06~2.05；
W1For the mass fraction of content of magnesia in vessel slag；
W2For the mass fraction of ferrous oxide content in vessel slag；
The high-temperature electric arc smelting temperature control range is 1350~1450 DEG C.
2. the method according to claim 1 for preparing dilval and aluminate cement admixture using vessel slag, special
Sign is：The lateritic nickel ore, (SiO2+CaO+MgO)/Al2O3≤ 0.35, Fe/Ni >=30, granularity<3mm accounts for mass ratio
80% or more, biodiversity content is less than 2%.
3. the method according to claim 1 for preparing dilval and aluminate cement admixture using vessel slag, special
Sign is：The blast furnace dedusting ash, carbon mass content are more than 30%, granularity<0.174mm accounts for 80% or more mass ratio, water
Mass content is divided to be less than 2% or less.
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| CN111910029A (en) * | 2020-07-09 | 2020-11-10 | 钢研晟华科技股份有限公司 | Device and method for cooperative quenching and tempering of steel slag and laterite-nickel ore |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526030A (en) * | 2013-09-27 | 2014-01-22 | 泰州永兴合金材料科技有限公司 | Method for smelting chromel alloy by stainless steel dedusting ash and laterite-nickel ore |
| CN103556068A (en) * | 2013-11-14 | 2014-02-05 | 德龙钢铁有限公司 | Method for producing weather-resisting steel by using low-grade nickel ores |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103526030A (en) * | 2013-09-27 | 2014-01-22 | 泰州永兴合金材料科技有限公司 | Method for smelting chromel alloy by stainless steel dedusting ash and laterite-nickel ore |
| CN103556068A (en) * | 2013-11-14 | 2014-02-05 | 德龙钢铁有限公司 | Method for producing weather-resisting steel by using low-grade nickel ores |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111910029A (en) * | 2020-07-09 | 2020-11-10 | 钢研晟华科技股份有限公司 | Device and method for cooperative quenching and tempering of steel slag and laterite-nickel ore |
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