CN108609875A - A method of preparing cement admixture using vessel slag - Google Patents
A method of preparing cement admixture using vessel slag Download PDFInfo
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- CN108609875A CN108609875A CN201810462307.1A CN201810462307A CN108609875A CN 108609875 A CN108609875 A CN 108609875A CN 201810462307 A CN201810462307 A CN 201810462307A CN 108609875 A CN108609875 A CN 108609875A
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- 239000002893 slag Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000004568 cement Substances 0.000 title claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 80
- 229910052742 iron Inorganic materials 0.000 claims abstract description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000203 mixture Substances 0.000 claims abstract description 28
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 16
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 16
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 16
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 13
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000004364 calculation method Methods 0.000 claims abstract description 4
- 238000002791 soaking Methods 0.000 claims abstract description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000010931 gold Substances 0.000 claims abstract description 3
- 229910052737 gold Inorganic materials 0.000 claims abstract description 3
- 239000000292 calcium oxide Substances 0.000 claims description 24
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 24
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 15
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 15
- 239000000395 magnesium oxide Substances 0.000 claims description 11
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims 6
- 238000000926 separation method Methods 0.000 claims 1
- 230000009467 reduction Effects 0.000 abstract description 15
- 239000000047 product Substances 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000002910 solid waste Substances 0.000 abstract description 5
- 239000006227 byproduct Substances 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 3
- 230000001590 oxidative effect Effects 0.000 abstract description 3
- 238000012216 screening Methods 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 10
- 229910052698 phosphorus Inorganic materials 0.000 description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000011574 phosphorus Substances 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 7
- 239000003638 chemical reducing agent Substances 0.000 description 6
- 238000009628 steelmaking Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000007885 magnetic separation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910000398 iron phosphate Inorganic materials 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000021050 feed intake Nutrition 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/42—Active ingredients added before, or during, the burning process
- C04B7/421—Inorganic materials
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
- C04B7/42—Active ingredients added before, or during, the burning process
- C04B7/421—Inorganic materials
- C04B7/424—Oxides, Hydroxides
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a kind of methods preparing cement admixture using vessel slag, include the following steps：Material chemical component analyzes the isolated finishing slag of the broken slag gold of burdening calculation raw material crushing screening drying material mixing high-temperature heating cooling and alloy；With the basicity CaO/SiO of mixture2、(CaO+MgO)/(SiO2+Al2O3) and fixed carbon content McRequired blast furnace dedusting ash, vessel slag, the quality of iron tailings are obtained as dispensing foundation；The mixture meets following formula：CaO/SiO2=0.5~1.3；(CaO+MgO)/(SiO2+Al2O3)=0.7 1.2；
Description
Technical field
The invention belongs to convertor steelmaking process solid waste resource recycle field more particularly to it is a kind of utilize converter
The method that slag prepares 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 members
Therefore plain calcium, magnesium and silicon etc. increase the recycling to vessel slag resource, becoming reduces steel mill's smelting cost, realize discarded
The main means of object zero-emission.Currently, for the existing main methods of vessel slag be by cold conditions vessel slag by it is broken,
Screening, magnetic separation, are used again after extracting metal oxide therein, usually handle rear converter slag and are returned for ground
It fills out, urban road laying, cement raw material, water purification agent and slag fertilizer etc..Two kinds of products that this processing method obtains are respectively iron oxygen
Compound and high alkalinity slag system, added value of product are relatively low.
Cement admixture is that a kind of glass rate is more than 80%, and gelation activity is high, dual alkalinity 0.8~1.3, iron oxidation
Object content is less than 5% slag system.
《A method of it is recycled using gas reduction vessel slag and clinker》(105624359 A of CN) is disclosed
A method of it is recycled using gas reduction vessel slag and clinker comprising following steps：Converter steelmaking process is divided into
Pneumatic steelmaking and vessel slag are heat-treated two flows, in the pneumatic steelmaking flow, the oxidized reaction of impurity element in molten iron
Enter vessel slag in the form of the oxide, forms the hot vessel slag of high content of phosphorus；The vessel slag is poured into processing slag to fill
Unit is heat-treated flow into the vessel slag, and the slag filling unit for filling the vessel slag is transferred to vessel slag treating stations,
The vessel slag occurs using coal gas as the hot reduction of reducing medium in the vessel slag treating stations, wherein the reduction ratio of FeO
The reduction ratio ＞ 80% of example ＞ 80%, P2O5, hot reduction treatment process are carried out at the same time the waste heat recovery of the vessel slag
With gaseous state phosphorus recovery operation, the vessel slag after processing finishes is re-applied as pre-melted slag and iron content cooling material return converter.It should
Slag system dual alkalinity obtained by method is higher, and glass rate and gelation activity are low, and there are free calcium oxide, the slag systems in slag
It can not be applied in cement industry.
《A kind of process for treating steel slag and its device》The process for treating steel slag that (103757152 B of CN) is disclosed includes will
Sial acidic oxide and slag feed intake, wherein mole of total sial acidic oxide and basic anhydride in mixture
Than 1:2.5-2.9；Kiln temperature is 1350-1450 DEG C, and in the presence of reducing agent, mixture heats mixing in rotary kiln；Production
Object is granulated into particle, carries out water quenching and cooling, falls into the water later, then through dehydration；Particle carries out magnetic separation point after dehydration
From steel grit is detached with series silicate particle.In this method reducing agent be carbon monoxide and coal dust intermixture, cost of material compared with
It is high.And rotary kiln process of coal combustion necessarily introduces the oxygen in air, reduction complicated compared to reducing agent direct-reduction flow
It is less efficient.
《A method of recycling iron and phosphorus from copper smelter slag》Method is by including disclosed in (102264919 A of CN)
Following process, can recycle phosphorus and iron with low cost from the copper smelter slag, and can be using the phosphorus of recycling and iron as resource
It is efficiently used：The first step, in the process, with the reducing agents such as carbon, Si, Al to the phosphorous copper smelter slag such as dephosphorization clinker into
Row reduction treatment, by the clinker ferriferous oxide and phosphorous oxides restored and recycle in the form of phosphorous molten iron；The
Two processes in the process, make the copper smelter slag for eliminating ferriferous oxide and phosphorous oxides as the sources CaO in sintering circuit
With sinter obtained is recycled to blast furnace；The third step, it is phosphorous to being recycled by the reduction treatment in the process
Molten iron carries out dephosphorization treatment, until the phosphorus concentration in phosphorous molten iron reaches 0.1 mass % hereinafter, phosphorus is made to be concentrated in CaO
In class flux；In the process, which is mixed in 0.1 mass % phosphorous molten irons below as source of iron for the fourth step
Into blast-melted.CaO mass percentages are higher in obtained slag in this method, therefore can only substitute agglomerant on a small quantity
CaO in sequence is unable to get the slag with gelling property, and added value of product is relatively low, limits its recycle value.
Taeyoung Kim et al.《Recovery of Fe and P from CaO-SiO2-FetO-P2O5Slag by
Microwave Treatment》A kind of laboratory of microwave heating graphitic carbon reduction treatment vessel slag is described in paper to grind
Study carefully.Wherein the equilibrium constant of carbon is 1.69, is heated 15 minutes, the reduction rate of iron reaches 0.97, phosphorus 0.89.Liu Chun is big et al.
《Valorization of BOF Steel Slag by Reduction and Phase Modification:Metal
Recovery and Slag Valorization》Describe iron phosphate oxide in carbon thermal reduction slag in paper, and by with addition of
Aluminium oxide and silica adjustment basicity prepare the laboratory research of different slag system products.Reaction restores 1 hour at 1600 DEG C, iron
The removal rate of oxide is more than 0.9, and describes the cutting mechanisms of iron phosphate oxide.Reducing agent used is in two articles
Graphite carbon is difficult to obtain economic benefit in heavy industrialization.
The method that the existing converter Slag treatment of the above invention and paper recycles, is mostly the oxidation of carbon thermal reduction iron
The method that iron compound in slagging-off is removed in object or magnetic separation, for the waste for making full use of iron and steel enterprise to generate, set forth herein one kind
It is the raw material method for preparing cement admixture by blast furnace dedusting ash, the difficult tailing in mine and vessel slag, original used in this method
Material is waste, and obtains low alkalinity CaO-SiO2-Al2O3Class blast furnace slag slag system can be applied to prepare cement.According to above
Background information, patent of the present invention propose a kind of method preparing cement admixture using vessel slag.
Invention content
It is an object of the invention to overcome the above problem and insufficient and provide and a kind of preparing cement admixture using vessel slag
Method, using iron and steel enterprise generate waste blast furnace dedusting ash, mine iron tailings, vessel slag be raw material, prepare class blast furnace
The cement admixture of slag, while generating byproduct iron.
A method of cement admixture being prepared using vessel slag, is included the following steps：Material chemical component is analyzed-is matched
Expect calculating-raw material crushing screening-drying-raw material mixing-high-temperature heating-cooling-it is broken-the golden isolated finishing slag of slag and alloy；
The cement admixture is the full and uniform mixing of raw material with blast furnace dedusting ash, vessel slag, iron tailings；
(1) material chemical component is analyzed：
Detect raw material blast furnace dedusting ash to be mixed respectively first, vessel slag, CaO, MgO, SiO in iron tailings2、Al2O3、
FeO、Fe2O3、MnO、P2O5, fixed carbon content McMass percentage；
(2) burdening calculation：
Dispensing foundation：With the basicity CaO/SiO2 of mixture, (CaO+MgO)/(SiO2+ Al2O3) and fixed carbon content Mc
Required blast furnace dedusting ash, vessel slag, the quality of iron tailings are obtained as dispensing foundation；
The basicity CaO/SiO of the mixture2、(CaO+MgO)/(SiO2+Al2O3) and McIt is described to meet following formula：
CaO/SiO2=0.5~1.3 (one)
(CaO+MgO)/(SiO2+Al2O3)=0.7-1.2 (two)
Wherein：Mc- mixture fixed carbon quality, MFe2O3- mixture aoxidizes weight of iron, MFeO- mixture ferrous oxide
Quality, MP2O5- mixture phosphorus pentoxide quality, MMnO- mixture manganese oxide quality；
(3) it is heated at high temperature：
By mixed blast furnace dedusting ash, vessel slag, iron tailings mixture high-temperature heating, heating temperature is not less than 1450
DEG C, non-oxidizing atmosphere, soaking time is not less than 20 minutes.
Further, the blast furnace dedusting ash, vessel slag, iron tailings granularity account for 70% or more mass percent less than 1mm,
Aqueous mass percent is less than 2%.
The beneficial effects of the present invention are：A kind of method preparing cement admixture using vessel slag disclosed by the invention
It is to reduce slag system basicity using blast furnace dedusting ash as reducing agent using the high feature of silicone content in iron tailings, solve iron and steel enterprise
While three kinds of solid waste intractable problems, the stopping that can be used for preparing cement products and byproduct reduced iron are obtained
Water；It solves solid waste and occupies land resources simultaneously, promote added value of product.
Specific implementation mode
Below by embodiment, the present invention is further illustrated.
The embodiment of the present invention carries out material chemical component analysis-burdening calculation-raw material crushing screening-according to technical solution
Drying-raw material mixing-high-temperature heating-cooling-is broken-the isolated finishing slag of slag gold and alloy.
The cement admixture is the full and uniform mixing of raw material with blast furnace dedusting ash, vessel slag, iron tailings；
(4) material chemical component is analyzed：
Detect raw material blast furnace dedusting ash to be mixed respectively first, vessel slag, CaO, MgO, SiO in iron tailings2、Al2O3、
FeO、Fe2O3、MnO、P2O5, fixed carbon content McMass percentage；
(5) burdening calculation：
Dispensing foundation：With the basicity CaO/SiO of mixture2、(CaO+MgO)/(SiO2+ Al2O3) and fixed carbon content McMake
Required blast furnace dedusting ash, vessel slag, the quality of iron tailings are obtained for dispensing foundation；
The basicity CaO/SiO of the mixture2、(CaO+MgO)/(SiO2+Al2O3) and McIt is described to meet following formula：
CaO/SiO2=0.5~1.3 (one)
(CaO+MgO)/(SiO2+Al2O3)=0.7-1.2 (two)
Wherein：Mc- mixture fixed carbon quality, MFe2O3- mixture aoxidizes weight of iron, MFeO- mixture ferrous oxide
Quality, MP2O5- mixture phosphorus pentoxide quality, MMnO- mixture manganese oxide quality；
(6) it is heated at high temperature：
By mixed blast furnace dedusting ash, vessel slag, iron tailings mixture high-temperature heating, heating temperature is not less than 1450
DEG C, non-oxidizing atmosphere, soaking time is not less than 20 minutes.
Further, the blast furnace dedusting ash, vessel slag, iron tailings granularity account for 70% or more mass percent less than 1mm,
Aqueous mass percent is less than 2%.
The analysis of material chemical component of the embodiment of the present invention is shown in Table 1.Cement admixture of the embodiment of the present invention presets finishing slag basicity
And McIt is shown in Table 2.Cement admixture cement admixture material composition of the embodiment of the present invention is shown in Table 3.Cement mixing of the embodiment of the present invention
The performance of material is shown in Table 4.
1 material chemical component of the embodiment of the present invention of table analyzes (wt%)
2 cement admixture of the embodiment of the present invention of table presets finishing slag basicity and Mc
3 cement admixture cement admixture material composition of the embodiment of the present invention (wt%) of table
| Raw material | Vessel slag | Iron tailings | Blast furnace dedusting ash |
| 1 | 50.0 | 25.9 | 24.1 |
| 2 | 55.2 | 20.0 | 24.8 |
| 3 | 59.2 | 15.6 | 25.2 |
| 4 | 62.2 | 12.0 | 25.8 |
The performance of 4 cement admixture of the embodiment of the present invention of table
In order to state the present invention, explanation appropriately and is being sufficiently carried out to the present invention by embodiment among the above, it is above
Embodiment is merely to illustrate the present invention, and not limitation of the present invention, those of ordinary skill in technical field,
In the case of not departing from the spirit and scope of the present invention, can also make a variety of changes and modification, made by any modification, etc.
With replacement, improvement etc., should all be included in the protection scope of the present invention, scope of patent protection of the invention should be wanted by right
Ask restriction.
Claims (2)
1. a kind of method preparing cement admixture using vessel slag, includes the following steps：Material chemical component analysis-proportioning meter
Calculation-raw material crushing screening-drying-raw material mixing-high-temperature heating-cooling-is crushed-slag gold separation；
(1) material chemical component is analyzed：
This method is raw material with blast furnace dedusting ash, vessel slag, iron tailings；Detect blast furnace dedusting ash respectively, vessel slag, in iron tailings
CaO、MgO、SiO2、Al2O3、FeO、Fe2O3、MnO、P2O5, fixed carbon mass percentage；
(2) burdening calculation：
Cement admixture is with finishing slag basicity【CaO/SiO2；(CaO+MgO)/(SiO2+Al2O3)】, mixed carbon comtent is as dispensing foundation.It is full
The following formula of foot：
MCaO/MSiO2=0.5~1.3 (one)
Wherein：MCaO- finishing slag calcium oxide quality；MMgO- finishing slag magnesia quality；MSiO2- finishing slag silica quality；
MAl2O3- finishing slag quality of alumina；
Wherein：Mc- mixture fixed carbon quality；MFe2O3- mixture aoxidizes weight of iron；MFeO- mixture ferrous oxide quality；
MP2O5- mixture phosphorus pentoxide quality；MMnO- mixture manganese oxide quality；
(3) it is heated at high temperature：
Non-oxidizing atmosphere environment, heating temperature are not less than 1450 DEG C, and soaking time is not less than 20 minutes.
2. the method according to claim 1 for preparing cement admixture using vessel slag, the blast furnace dedusting ash, converter
Slag, iron tailings granularity account for 70% or more mass percent less than 1mm, and aqueous mass percent is less than 2%.
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