CN109439918A - A kind of baking inphases extract titanium, iron, aluminium, magnesium component system in high titanium slag - Google Patents
A kind of baking inphases extract titanium, iron, aluminium, magnesium component system in high titanium slag Download PDFInfo
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- CN109439918A CN109439918A CN201811349750.4A CN201811349750A CN109439918A CN 109439918 A CN109439918 A CN 109439918A CN 201811349750 A CN201811349750 A CN 201811349750A CN 109439918 A CN109439918 A CN 109439918A
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- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up 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
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical 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
- C22B1/02—Roasting processes
- C22B1/06—Sulfating roasting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/08—Chloridising roasting
-
- 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
- C22B21/00—Obtaining aluminium
- C22B21/0038—Obtaining aluminium by other processes
- C22B21/0069—Obtaining aluminium by other processes from scrap, skimmings or any secondary source aluminium, e.g. recovery of alloy constituents
-
- 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
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/20—Obtaining alkaline earth metals or magnesium
- C22B26/22—Obtaining magnesium
-
- 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
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1218—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by dry processes
- C22B34/1222—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by dry processes using a halogen containing agent
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
- C22B7/002—Dry processes by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding)
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
Abstract
The present invention provides a kind of baking inphases to extract titanium, iron, aluminium, magnesium component system in high titanium slag, the system comprises dosing, roasting unit, water logging unit, fractional precipitation unit and condensing unit, dosing is used to mix high titanium slag and auxiliary agent to obtain material to be roasted；Roasting unit carries out low-temperature bake and high-temperature roasting for treating roasting material；Water logging unit is used to carry out Soaking treatment to the fired slags, obtains filter residue and the first filtrate comprising aluminium ion, magnesium ion after separation of solid and liquid；Fractional precipitation unit is used to carry out fractional precipitation to the first filtrate, completes the extraction to aluminium component and magnesium component in high titanium slag；Condensing unit is used for processing of sublimating to the iron content, titanium component enriched gas progress temperature control, completes the extraction to iron component and titanium component in high titanium slag.System of the invention may be implemented to high titanium slag baking inphases to extract the titanium in high titanium slag, iron, aluminium and magnesium component, and system operatio is simple, and technique is short, high-efficient, at low cost.
Description
Technical field
The invention belongs to field of metallurgy and chemical engineering, more particularly, be related to a kind of baking inphases extract titanium in high titanium slag, iron,
Aluminium, magnesium component system.
Background technique
For Panzhihua steel plant year output of steel up to 10,000,000 tons, the amount of generated high-titanium blast furnace slag is up to 3,600,000 tons.Mesh
Before, the accumulating amount of high-titanium blast furnace slag is 60,000,000 tons existing.The bulk deposition of high-titanium blast furnace slag not only land occupation, but also its diafiltration
Liquid enters surface water and groundwater, causes water pollution, and percolate has certain toxicity, and being diffused into Soil Surrounding leads to the farmland village
Family's damage, forms " barren land ".Wind blows tiny slag particle and causes fugitive dust, pollutes to local and lower air port area air.And
And the high-titanium blast furnace slag for being deposited in Jinsha jiang River two sides be easy to cause landslide under rainwash, is a kind of uncontrollable peace
Full hidden danger, the bulk deposition of high-titanium blast furnace slag have become on influencing huge pollution sources on local environment and geology.
Summary of the invention
It is above-mentioned existing in the prior art it is an object of the present invention to solving for the deficiencies in the prior art
One or more problems.For example, process flow is reliably segmented roasting one of the objects of the present invention is to provide a kind of equipment is simple
It burns and extracts titanium, iron, aluminium, magnesium component system in high titanium slag.
To achieve the goals above, the present invention provides a kind of baking inphases to extract titanium, iron, aluminium, magnesium component in high titanium slag
System, the system may include dosing, roasting unit, water logging unit, fractional precipitation unit and condensing unit,
In, the dosing is used to mix high titanium slag and auxiliary agent to obtain material to be roasted, and the auxiliary agent is chlorate and sulfuric acid
The mixture of salt；The roasting unit carries out low-temperature bake and high-temperature roasting, the low-temperature bake packet for treating roasting material
It includes and treats roasting material at a temperature of 100 DEG C~400 DEG C and roasted, obtain iron content, titanium component enriched gas and containing aluminium, magnesium
The first material of component, the high-temperature roasting include the first object at a temperature of 400 DEG C~800 DEG C to described containing aluminium, magnesium component
Material is roasted, and fired slags are obtained；The water logging unit is used to carry out Soaking treatment to the fired slags, obtains after separation of solid and liquid
Filter residue and the first filtrate comprising aluminium ion, magnesium ion；The fractional precipitation unit is used for described comprising aluminium ion, magnesium ion
The first filtrate carry out fractional precipitation, complete extraction to aluminium component and magnesium component in high titanium slag；The condensing unit for pair
The iron content, titanium component enriched gas carry out temperature control and sublimate processing, extraction of the completion to iron component and titanium component in high titanium slag.
Baking inphases of the invention extract titanium in high titanium slag, iron, aluminium, magnesium component system an exemplary embodiment
In, the roasting unit may include the calcining kiln for being circumscribed with first gas collection device, and the first gas collection device is used
In collection iron content, titanium component enriched gas, and distillation and/or the auxiliary agent gas decomposed.
Baking inphases of the invention extract titanium in high titanium slag, iron, aluminium, magnesium component system an exemplary embodiment
In, the condensing unit may include condenser, and one end of the condenser is connect with the first gas collection device, another
It holds and is connected with second gas collection device, in the auxiliary agent gas and iron content, titanium component enriched gas of the distillation and/or decomposition
Fe containing component gas can be recrystallized in the different location in condenser tube wall, with realize iron component extraction and distillation and/
Or the recycling of the auxiliary agent gas decomposed, the second gas collection device, which can be collected, to be failed to recrystallize in condenser tube wall
Titaniferous component gas in iron content, titanium component enriched gas.
Baking inphases of the invention extract titanium in high titanium slag, iron, aluminium, magnesium component system an exemplary embodiment
In, the condenser can be one of spraying condenser, fill-type condenser, drip water plate condenser, sieve plate condenser
Or multiple combinations.
Baking inphases of the invention extract titanium in high titanium slag, iron, aluminium, magnesium component system an exemplary embodiment
In, the system can also include recovery unit, and the filter residue recycling that the recovery unit is used to obtain the water logging unit is again
It utilizes to prepare portland cement.
Baking inphases of the invention extract titanium in high titanium slag, iron, aluminium, magnesium component system an exemplary embodiment
In, the high titanium slag can be water quenching type high-titanium blast furnace slag, and the component of the water quenching type high-titanium blast furnace slag includes, by quality percentage
Than meter, Fe2O3Content is 2%~8%, TiO2Content is 10%~25%, Al2O3Content is 8%~15%, content of MgO 5%
~12%.
Baking inphases of the invention extract titanium in high titanium slag, iron, aluminium, magnesium component system an exemplary embodiment
In, the high titanium slag can be resulting through high temperature cabonization-low temperature chlorination for titanium-containing blast furnace slag obtained by vanadium titano-magnetite blast furnace process
Tailings.
Baking inphases of the invention extract titanium in high titanium slag, iron, aluminium, magnesium component system an exemplary embodiment
In, the mass ratio of the high titanium slag and auxiliary agent can be 0.1~10:1.
Baking inphases of the invention extract titanium in high titanium slag, iron, aluminium, magnesium component system an exemplary embodiment
In, the fractional precipitation may include: that the first precipitating reagent is added into first filtrate, at 25 DEG C~70 DEG C adjust pH to
4.0~6.0, it is filtered after stirring, obtains the second filtrate of aluminium hydroxide powder and rich magnesium component, wherein the first precipitating reagent is hydrogen
The combination of one or both of aluminium oxide and ammonium hydroxide；The second precipitating reagent is added into the second filtrate of the rich magnesium component, 25
DEG C~70 DEG C at adjust pH to 9.0~12.0, filtered after stirring, obtain magnesium hydrate powder, wherein second precipitating reagent is
The combination of one or both of magnesium hydroxide and ammonium hydroxide.
Baking inphases of the invention extract titanium in high titanium slag, iron, aluminium, magnesium component system an exemplary embodiment
In, the Soaking treatment may include carrying out Soaking treatment, the water to the fired slags in whipping process using infusion
The volume mass ratio of immersion liquid and the fired slags is 0.5~100:1, and the temperature of the Soaking treatment is 20 DEG C~100 DEG C.
Compared with prior art, beneficial effect of the present invention includes:
(1) system of the invention may be implemented to high titanium slag baking inphases to extract the titanium in high titanium slag, iron, aluminium and magnesium group
Point, system operatio is simple, and technique is short, and it is high-efficient, it is at low cost；
(2) system of the invention carries out component extraction environment close friend to high titanium slag, extracts relative to traditional acid hydrolyzation valuable
Component is avoided because the wasting of resources caused by using a large amount of sulfuric acid and sulfuric acid mist form the adverse effect caused by environment；
(3) system of the invention is to the TiO in high titanium slag2、Fe2O3、Al2O3, MgO recovery rate can reach 50%~
98%, the product being prepared is all satisfied or is higher than national (industry) standard；
(4) present system meets the requirement of portland cement to remaining tailings after high titanium slag progress component extraction, can
It is directly used in production of construction materials, is generated without the big residue of environmental pollution, it is environmentally protective.
Detailed description of the invention
By the description carried out with reference to the accompanying drawing, above and other purpose of the invention and feature will become more clear
Chu, in which:
The baking inphases that Fig. 1 shows an illustrative embodiment of the invention extract titanium, iron, aluminium, magnesium component in high titanium slag
System simplified schematic diagram.
Specific embodiment
Hereinafter, a kind of baking inphases according to the present invention will be described in detail in conjunction with attached drawing and exemplary embodiment to mention
Take titanium in high titanium slag, iron, aluminium, magnesium component system.
The baking inphases that Fig. 1 shows an illustrative embodiment of the invention extract titanium, iron, aluminium, magnesium component in high titanium slag
System simplified schematic diagram.
The present invention provides a kind of baking inphases to extract titanium, iron, aluminium, magnesium component system in high titanium slag, in point of the invention
Section roasting extract high titanium slag in titanium, iron, aluminium, magnesium component system an exemplary embodiment in, as shown in Figure 1, shown system
It may include dosing, roasting unit, water logging unit, fractional precipitation unit and condensing unit, wherein
The dosing is used to high titanium slag and auxiliary agent carrying out mix to obtain material to be roasted.The roasting is single
Member carries out baking inphases for treating roasting material so that titanium, iron, aluminium, magnesium component in high titanium slag exist with different states,
Convenient for the separation and Extraction in later period.The fired slags that the water logging unit is used to obtain roasting unit carry out Soaking treatment, are filtered
Slag and the first filtrate comprising aluminium ion, magnesium ion.The fractional precipitation unit is used for first comprising aluminium ion, magnesium ion
Filtrate carries out fractional precipitation, completes the extraction to aluminium component and magnesium component in high titanium slag.The condensing unit is used for iron content, titanium
Component enriched gas carries out temperature control and sublimates processing to complete the extraction to iron component and titanium component in high titanium slag.
In the present embodiment, the roasting unit including the use of follow-on calcining kiln treat roasting material carry out low temperature,
High-temperature roasting.Follow-on calcining kiln is the calcining kiln for being externally connected to first gas collection device.The first gas
Collection device can be used for collecting the gas generated in roasting process.The gas may include iron content, titanium component enriched gas
Body, and distillation and/or the auxiliary agent gas decomposed.The iron content, titanium component enriched gas are the iron groups in auxiliary agent and high titanium slag
Divide and titanium component is reacted and got.
In the present embodiment, what baking inphases carried out first is low-temperature bake.During roasting, a part of auxiliary agent
It is decomposed and/or is distilled due to maturing temperature, mixed in gaseous state with iron, titanium component enriched gas.Another portion of auxiliary agent
Divide to react with high titanium slag and obtains iron content, titanium component enriched gas and the first material containing aluminium, magnesium component.It is described containing aluminium,
The first material of magnesium component does not contain iron, titanium component.The first material containing aluminium, magnesium component can be with after high-temperature roasting
Form fired slags.
The heating rate of the low-temperature bake can be 1 DEG C/min~10 DEG C/min, and low-temperature bake temperature can be 100 DEG C
~400 DEG C.Preferably, heating rate can be 3 DEG C/min~8 DEG C/min, and low-temperature bake temperature can be 180 DEG C~340 DEG C.
The soaking time of low-temperature bake can be confirmed according to practical roasting amount or phenomenon, for example, soaking time can be 0.1h
~5h, certainly, soaking time of the invention are without being limited thereto.After the completion of low-temperature bake, need to the first object containing aluminium, magnesium component
Material carries out high-temperature roasting processing.The heating rate of the high-temperature roasting can be 1 DEG C/min~10 DEG C/min, high-temperature roasting temperature
It can be 400 DEG C~800 DEG C.Preferably, heating rate can be 3 DEG C/min~7.8 DEG C/min, and high-temperature roasting temperature can be
420 DEG C~750 DEG C.The soaking time of high-temperature roasting can be confirmed according to practical roasting amount or phenomenon, for example, when heat preservation
Between can be 0.1h~5h, certainly, high-temperature roasting soaking time of the invention is without being limited thereto.
More than, above-mentioned roasting process, which is arranged, to be advantageous in that, Fe, Ti group within the temperature range of low-temperature bake, in slag
Divide and chlorination salt assitant extent of reaction highest.Al, Mg component and sulfuric acid salt assitant within the temperature range of high-temperature roasting, in slag
Extent of reaction highest.It may be implemented within the scope of different temperatures by the otherness of this reactivity successively to Fe, Ti, Al, Mg
Extraction.For the heating rate of roasting, heating rate is excessively slow, and the reaction time is long, and energy consumption is excessively high, and heating rate is too fast,
It reacts insufficient, is unfavorable for the extraction of Fe, Ti, Al, Mg.
In the present embodiment, the high titanium slag can be the high-titanium blast furnace slag of water quenching type, for example, it is preferable to, it can be vanadium
The solid waste water quenching high-titanium blast furnace slag generated in titanomagnetite blast furnace ironmaking process.Wherein, the high titanium blast furnace of the water quenching type
The ingredient of slag may include, by mass percentage, Fe2O3Content is 2%~8%, TiO2Content is 10%~25%, Al2O3
Content is 8%~15%, and content of MgO is 5%~12%.Preferably, by mass percentage, the water quenching type high-titanium blast furnace slag
Ingredient may include Fe2O3Content is 2%~8%, TiO2Content is 10%~25%, Al2O3Content is 8%~15%,
Content of MgO is 5%~12%.When using water quenching type high-titanium blast furnace slag as raw material, since the humidity of the raw material is higher, it is auxiliary agent
It needs that the water quenching type high-titanium blast furnace slag is dried before mixing, be crushed.Broken purpose is to mix more with auxiliary agent
Uniformly.For example, dry temperature can be 60 DEG C~90 DEG C, it is preferred that dry temperature can be 67 DEG C~84 DEG C.Dry
Time can be confirmed according to the drying actual effect at scene, for example, drying time can be 6h~12h.Certainly, of the invention
Drying time it is without being limited thereto.For method of the invention be suitable for containing titanium, iron, aluminium, magnesium component any high titanium slag.
In the present embodiment, the high titanium slag can be titanium-containing blast furnace slag obtained by vanadium titano-magnetite blast furnace process through pyrocarbon
The resulting tailings of change-low temperature chlorination.Using the tailings as raw material, if it is the tailings of fresh baked, due to what is come out after low temperature chlorination
Tailings self-temperature is higher, does not need that tailings is dried.If it is the tailings after placement a period of time, due to the tail of titaniferous
Slag easily absorbs water, it is necessary to the tailings after placement is dried, likewise, the temperature of the drying can for 60 DEG C~
90 DEG C, it is preferred that dry temperature can be 67 DEG C~84 DEG C.
In the present embodiment, the mixed aid that the auxiliary agent can form for chlorate and sulfate.The chlorate can
To be ammonium chloride (NH4Cl), sodium chloride (NaCl), calcium chloride (CaCl2) and aluminium chloride (AlCl3One or more of)
Combination.The sulfate can be ammonium sulfate ((NH4)2SO4), ammonium hydrogen sulfate (NH4HSO4) and sulfuric acid (H2SO4) one of or
Two kinds of combinations, wherein H2SO4Mass fraction can be 20%~98%.The mixed aid formed for chlorate and sulfate
For, chlorate mainly acts on the low-temperature bake stage, generates the chloride of iron and the chloride of titanium.Sulfate mainly acts on
The high-temperature roasting stage generates the sulfate of aluminium and the sulfate of magnesium.For between the chlorate and sulfate in mixed aid
Quality proportioning can guarantee that the titanium in raw material, iron, aluminium, magnesium component have enough chlorates and sulfuric acid there is no strict requirements
Reactant salt.In the present invention, it can choose the salt other than above-mentioned enumerate for chlorate and sulfate.For example, chlorination
Salt can be potassium chloride etc., and sulfate can be potassium sulfate etc..But since the auxiliary agent for being added different will affect in process of the present invention
The constituent of the filter residue of generation, for prepared with filter residue portland cement be it is unfavorable, can be destroyed containing other elements
The performance of portland cement.It is preferred, therefore, that the chlorate of the invention can be ammonium chloride (NH4Cl), sodium chloride
(NaCl), calcium chloride (CaCl2) and aluminium chloride (AlCl3) one or more of combination.The sulfate can be sulfuric acid
Ammonium ((NH4)2SO4), ammonium hydrogen sulfate (NH4HSO4) and sulfuric acid (H2SO4) one or both of combination, wherein H2SO4Quality
Score can be 20%~98%.Since the chlorate in auxiliary agent of the present invention mainly acts on the low-temperature bake stage, sulfate is helped
Agent mainly acts on the high-temperature roasting stage.For titanium, iron component contained in the high titanium slag, corresponding titanium tetrachloride can be generated
And ferric trichloride.Therefore, the iron, titanium component enriched gas can be with the mixed gas for titanium tetrachloride and ferric trichloride.
In the present embodiment, the mass ratio of the high titanium slag and chlorate and sulfate mixed aid can be 1:0.1~
10.Preferably, mass ratio can be 1:1~8.
In the present embodiment, the material particular diameter to be roasted can meet 30 μm~200 μm for 80% or more particle.It is excellent
Choosing, 80% or more particle meets 50 μm~160 μm.Above-mentioned particle size, which is arranged, uniformly to mix convenient for raw material with auxiliary agent
It closes, is conducive to the abundant progress of calcination.
In the present embodiment, the boiling point of the chloride formed due to each element is different, after low-temperature bake, iron component and
Titanium component becomes gas, and aluminium component and magnesium component remain in first material, to after first material high-temperature roasting by aluminium, magnesium group
Divide and is converted into soluble sulphate.Therefore, the aluminium component in high titanium slag and magnesium component are enriched in the fired slags.And high titanium slag
In the components such as the calcium, the silicon that contain equally be enriched in fired slags because of higher boiling.Therefore, in fired slags containing calcium, silicon, magnesium and
Aluminium component.
In the present embodiment, the water logging process of fired slags carries out in lasting stirring.Preferably, infusion can be work
One of industry water, tap water or distilled water or a variety of mixing.Certainly, infusion used in the present invention is without being limited thereto.Institute
The volume mass ratio (proportion unit can be mL/g) for stating infusion and fired slags can be 0.5~100:1.Preferably, volume
Mass ratio can be 6~80:1.The temperature of water logging can be 20 DEG C~100 DEG C, it is preferred that can be 25 DEG C~100 DEG C.Water logging
Time can be determined according to the actual amount of fired slags, for example, the time of water logging can be 0.1h~5.0h.It is arranged above-mentioned
Volume mass ratio and water soaking temperature, which are advantageous in that, both can guarantee that fired slags water logging is complete, and the reasonable benefit of resource is also ensured
With being unlikely to waste.
In the present embodiment, the distribution precipitating may include two stages.First stage may include to described first
The first precipitating reagent is added in filtrate, pH to 4.0~6.0 is adjusted at 25 DEG C~70 DEG C, is filtered after stirring, obtains aluminium hydrate powder
Body (Al (OH)3) and rich magnesium component the second filtrate, complete extraction to aluminium component.It preferably, can be at 28 DEG C~62 DEG C
It is precipitated under the conditions of adjusting pH to 4.3~5.4.First precipitating reagent can be one of aluminium hydroxide and ammonium hydroxide or two
Kind combination.The time of mixing can be 1min~120min, and certainly, mixing time can based on experience value or scene carries out
It determines.Filtering in first stage precipitating can be using one or more of natural subsidence, suction filtration or filters pressing combination.
The second precipitating reagent can be added into the second filtrate of the rich magnesium component in second stage, lower at 25 DEG C~70 DEG C
PH to 9.0~12.0 is saved, is filtered after stirring, obtains magnesium hydrate powder (Mg (OH)2) and third filtrate, it completes to magnesium component
Extraction.Preferably, it is carried out under the conditions of pH to 9.4~11.3 can be adjusted at 28 DEG C~63 DEG C.Second precipitating reagent can
Think that one or both of magnesium hydroxide and ammonium hydroxide combine.The time of mixing can be 1min~120min, certainly, stir
Mixing the time can based on experience value or scene is determined.Filtering in second stage precipitating can be using natural subsidence, suction filtration
Or one or more of filters pressing combination.
In the present embodiment, due to there is the presence of sulfuric acid salt assitant, contain sulfuric acid salt assitant in the third filtrate.To
Three filtrates can recycle sulfuric acid salt assitant after being recrystallized and be used in firing stage, realize the recycling and reusing of auxiliary agent.
In the present embodiment, extracting method of the invention can be to titanium dioxide, di-iron trioxide, three oxygen in high titanium slag
The recovery rate for changing two aluminium and magnesia reaches 50%~98%.
In the present embodiment, the condensing unit includes condenser.One end of the condenser and the first gas are received
Acquisition means connection, the other end connect second gas collection device.The auxiliary agent gas and iron content, titanium group of the distillation and/or decomposition
Fe containing component gas in separating/enriching gas can be recrystallized in the different location in condenser tube wall, to realize mentioning for iron component
The recycling for the auxiliary agent gas for taking and distilling and/or decompose.The second gas collection device, which can be collected, to fail in condenser
Titaniferous component gas in the iron content that is recrystallized in tube wall, titanium component enriched gas.It is sublimated by temperature control, i.e., control temperature is cold
It is solidifying that iron component and titanium component are separated.Sublimating is that substance skips the phenomenon that liquid directly becomes solid-state from gaseous state, and condensation is
Making the temperature of hot object reduces and the process for undergoing phase transition, and condensation in the present invention is to realize the mode of operation sublimated.Condensation
In the process, condenser can be used to condense iron, titanium component enriched gas.Since iron, titanium component enriched gas are mingled with
The distillation of auxiliary agent and/or decomposition gas, the auxiliary agent gas and iron component (iron chloride) gas for distilling and/or decomposing in condensation process
Body is recrystallized at the different location of condenser tube wall, can scrape the iron component recrystallized, is obtained iron-containing solid
Fixed (iron chloride solid) completes the extraction to iron component.It can continue cycling through after the auxiliary agent recycling of recrystallization for firing stage.
Sulfate and chlorate are obtained after recrystallization, are then re-applied in firing stage of the invention.Due to titanium component gas and iron
The freezing point of component gas is different, and the gas of titanium component can't solidify within the condenser.It needs to collect titanium group after the condenser
Divide gas, liquid-absorbant is used to collect titanium component gas (titanium tetrachloride gases) to obtain aqua oxidation titanium solution (TiO2·
nH2O), the extraction to titanium component is completed.The liquid absorption liquid can be one in industrial water, tap water or distilled water
Kind or a variety of mixing.
In the present embodiment, the condenser is spraying condenser, fill-type condenser, drip water plate condenser, sieve plate
One of condenser or multiple combinations.
In the present embodiment, the system also includes recovery units, and the recovery unit is for obtaining the water logging unit
To filter residue recycling and reusing to prepare portland cement.Due to containing the components such as calcium, silicon, magnesium and aluminium in fired slags.In water logging
In completion, magnesium and aluminium component enter the first filtrate, and calcium and silicon then enter filter residue.Due to the presence of the sulfate in auxiliary agent, and
And sulfate mainly acts on high-temperature roasting, therefore, calcium and silicon components are then mainly with the shape of calcium sulfate and amorphous silica
Formula exists.Due to being rich in silico-calcium component in filter residue, meets the requirement of portland cement, silicate cement can be directly applied to
Mud.
In conclusion system of the invention may be implemented to the baking inphases of high titanium slag with extract the titanium in high titanium slag, iron,
Aluminium and magnesium component, system operatio is simple, and technique is short, and high-efficient, process costs are low；It is environmental-friendly, it is mentioned relative to traditional acid hydrolyzation
Valuable component is taken, is avoided because the wasting of resources caused by using a large amount of sulfuric acid and sulfuric acid mist form the bad shadow caused by environment
It rings；To the TiO in high titanium slag2、Fe2O3、Al2O3, MgO recovery rate can reach 50%~98%, the product being prepared is full
Foot is higher than national (industry) standard；Meet the requirement of portland cement to remaining tailings after high titanium slag progress component extraction,
It can be directly used in production of construction materials, generated without the big residue of environmental pollution, it is environmentally protective.
Although those skilled in the art should be clear above by combining exemplary embodiment to describe the present invention
Chu can carry out exemplary embodiment of the present invention each without departing from the spirit and scope defined by the claims
Kind modifications and changes.
Claims (10)
1. a kind of baking inphases extract titanium, iron, aluminium, magnesium component system in high titanium slag, which is characterized in that the system comprises ingredients
Unit, roasting unit, water logging unit, fractional precipitation unit and condensing unit, wherein
The dosing is used to mix high titanium slag and auxiliary agent to obtain material to be roasted, and the auxiliary agent is chlorate and sulfuric acid
The mixture of salt；
The roasting unit successively carries out low-temperature bake and high-temperature roasting for treating roasting material, and the low-temperature bake is included in
Roasting material is treated at a temperature of 100 DEG C~400 DEG C to be roasted, and obtains iron content, titanium component enriched gas and containing aluminium, magnesium component
First material, the high-temperature roasting include at a temperature of 400 DEG C~800 DEG C to it is described containing aluminium, magnesium component first material into
Row roasting, obtains fired slags；
The water logging unit is used to carry out Soaking treatment to the fired slags, obtain after separation of solid and liquid filter residue and comprising aluminium ion,
First filtrate of magnesium ion；
The fractional precipitation unit is used to carry out fractional precipitation, completion pair to first filtrate comprising aluminium ion, magnesium ion
The extraction of aluminium component and magnesium component in high titanium slag；
The condensing unit is used for processing of sublimating to the iron content, titanium component enriched gas progress temperature control, completes in high titanium slag
The extraction of iron component and titanium component.
2. baking inphases according to claim 1 extract titanium, iron, aluminium, magnesium component system in high titanium slag, which is characterized in that
The roasting unit includes the calcining kiln for being circumscribed with first gas collection device, and the first gas collection device contains for collecting
Iron, titanium component enriched gas, and distillation and/or the auxiliary agent gas decomposed.
3. baking inphases according to claim 2 extract titanium, iron, aluminium, magnesium component system in high titanium slag, which is characterized in that
The condensing unit includes condenser, and one end of the condenser is connect with the first gas collection device, other end connection
There are second gas collection device, the iron content group in the distillation and/or the auxiliary agent gas and iron content, titanium component enriched gas that decompose
Point gas can be recrystallized in the different location in condenser tube wall, to realize the extraction and distillation and/or decomposition of iron component
Auxiliary agent gas recycling, the second gas collection device can collect the iron content for failing to recrystallize in condenser tube wall,
Titaniferous component gas in titanium component enriched gas.
4. baking inphases according to claim 3 extract titanium, iron, aluminium, magnesium component system in high titanium slag, which is characterized in that
The condenser is one of spraying condenser, fill-type condenser, drip water plate condenser, sieve plate condenser or a variety of groups
It closes.
5. baking inphases according to claim 1 extract titanium, iron, aluminium, magnesium component system in high titanium slag, which is characterized in that
The system also includes recovery unit, the filter residue recycling and reusing that the recovery unit is used to obtain the water logging unit is to make
Standby portland cement.
6. baking inphases according to claim 1 extract titanium, iron, aluminium, magnesium component system in high titanium slag, which is characterized in that
The high titanium slag is water quenching type high-titanium blast furnace slag, and the component of the water quenching type high-titanium blast furnace slag includes, by mass percentage,
Fe2O3Content is 2%~8%, TiO2Content is 10%~25%, Al2O3Content be 8%~15%, content of MgO be 5%~
12%.
7. baking inphases according to claim 1 extract titanium, iron, aluminium, magnesium component system in high titanium slag, which is characterized in that
The high titanium slag is titanium-containing blast furnace slag obtained by vanadium titano-magnetite blast furnace process through the resulting tailings of high temperature cabonization-low temperature chlorination.
8. baking inphases according to claim 1 extract titanium, iron, aluminium, magnesium component system in high titanium slag, which is characterized in that
The mass ratio of the high titanium slag and auxiliary agent is 0.1~10:1.
9. baking inphases according to claim 1 extract titanium, iron, aluminium, magnesium component system in high titanium slag, which is characterized in that
The fractional precipitation includes:
The first precipitating reagent is added into first filtrate, pH to 4.0~6.0 is adjusted at 25 DEG C~70 DEG C, is filtered after stirring,
Obtain the second filtrate of aluminium hydroxide powder and rich magnesium component, wherein the first precipitating reagent is one of aluminium hydroxide and ammonium hydroxide
Or two kinds of combinations；
The second precipitating reagent is added into the second filtrate of the rich magnesium component, pH to 9.0~12.0 is adjusted at 25 DEG C~70 DEG C,
It is filtered after stirring, obtains magnesium hydrate powder, wherein second precipitating reagent is one or both of magnesium hydroxide and ammonium hydroxide
Combination.
10. baking inphases according to claim 1 extract titanium, iron, aluminium, magnesium component system in high titanium slag, which is characterized in that
The Soaking treatment carries out Soaking treatment, the infusion and institute to the fired slags in whipping process including the use of infusion
The volume mass ratio for stating fired slags is 0.5~100:1, and the temperature of the Soaking treatment is 20 DEG C~100 DEG C.
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| CN114127319A (en) * | 2019-03-27 | 2022-03-01 | 多伦多大学管理委员会 | Method for recovering target metal from iron or steel slag using at least one of carbothermic process and pyrometallurgical-hydrometallurgical process |
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