CN105734269A - Method for preparing porous structure material with magnetic pyrite as main phase - Google Patents
Method for preparing porous structure material with magnetic pyrite as main phase Download PDFInfo
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- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
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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
- C22B1/00—Preliminary treatment of ores or scrap
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Abstract
The invention discloses a method for preparing a porous structure material with magnetic pyrite as the main phase. The method is characterized in that pyrite and limonite are used as raw materials and are mixed or pelletized according to the mass proportion of 3:1-1:1, roasting is conducted at the temperature of 550-800 DEG C under an oxygen-free condition, and the porous structure material with the phase mainly composed of the magnetic pyrite in the nanometer-submicron crystal grain size is obtained. The material is provided with nanometer-micron gaps, has a large specific surface area, and is used as an active filtering material for recovering heavy metal from wastewater and processing wastewater and eutrophic water to achieve simultaneous removal of nitrogen and phosphorus.
Description
The application is the divisional application of the application for a patent for invention of Application No. " 2014104528990 ", filing date " 20140905 ", invention entitled " a kind of method that pyrite and the baking mixed preparation of limonite are the porous structure material of dominant phase with magnetic iron ore ".
One, technical field
The present invention relates to the method that mineral resources processing is prepared with functionalization material.
Two, background technology
Protection environment, prevent from polluting, to treasure limited nature resource be the global topic received much concern, wherein the most increasingly receive publicity based on natural mineral resource pollution administration, repairing environment.In natural minerals, pyrite is that in the earth's crust, quantity is most, be distributed widest sulfide mineral, and main chemical compositions is FeS2, mainly generate via magmatic segregation, hydrothermal process, biodeposition.Main it is made up of pyrite and valuable component is only limitted to the ore body of sulfur and is referred to as pyrite deposit.Under more situation, pyrite is the essential mineral of non-ferrous metal, precious metal deposit, reclaims Sulphur ressource, referred to as iron concentrate as side-product in ore dressing, metallurgy.Chinese Yellow iron ore deposit proved reserves are at the forefront in the world.
Pyrite is mainly used as preparing the raw material of sulfur and sulphuric acid.Paid high attention to as the mineral material curbed environmental pollution in recent years; but research shows that pyrite belongs to sulfide; its surface reaction activity is more than less than magnetic iron ore; and the magnetic that magnetic iron ore has can be the magnetic separation of material, magnetic recovery offer advantage, so becoming magnetic iron ore or the natural magnetic iron ore of direct employing to carry out environmental conservation and the most gradually receive publicity by heat treatment mode activation pyrite.Patent CN103626293A discloses a kind of natural magnetic iron ore biofilter and utilizes it to synchronize to remove nitrate nitrogen and the method for phosphorus in water, has certain denitration and dephosphorization effect.But the features such as natural magnetic iron ore tool degree of crystallinity is high, granule is big, specific surface area is little, surface activity is on the low side, reduces stock utilization.And study and show that pyrite roasting under an inert atmosphere can obtain the magnetic iron ore material of loose structure, in terms of heavy metal is reclaimed in denitrogenation dephosphorizing, absorption, show the performance of excellence.But the elemental sulfur that individually roasted pyrite produces under an inert atmosphere easily condenses in pipe-line system, is unfavorable for that roasting system runs well.A kind of effectively prepare magnetic iron ore to solve again the method for pipeline blockage problem to be the key technology making full use of Surface of Pyrrhotite activity so finding.
Limonite is a kind of iron-stone, and essential mineral therein is goethitum, contains a small amount of bloodstone, quartz, clay mineral simultaneously.Limonite mainly passes through the oxidations such as sulfide and the carbonate of ferrum and forms, it is possible to be enriched with by inorganic and biological agent in lake, marsh isomesia.Limonite ore is low due to Iron grade, is seldom used as iron-smelting raw material, processes often as barren rock, had both occupied land resource and had ignored its use value, and having polluted again environment.China's limonite reserves are the abundantest, but its chemical composition is not fixed, and iron content is unstable, belongs to extremely difficult iron ore.Limonite raw ore moisture content change is relatively big, and easily produces pulverizing in attrition process, and this becomes the key factor causing China's limonite resource utilization extremely low.
Three, summary of the invention
The present invention overcomes prior art weak point, it is provided that a kind of convenient for production, with low cost, tool high-specific surface area, high surface, the ferromagnetic porous structure material preparation method being made up of magnetic iron ore, preparing target product dominant is magnetic iron ore mutually.
The present invention solves technical problem, adopts the following technical scheme that
The method that present invention preparation is the porous structure material of dominant phase with magnetic iron ore, its feature is: prepare by pyrite and limonite are baking mixed；Pyrite and limonite are mixed or pelletize according to the ratio of mass ratio 3:1～1:1, under anaerobic through 550～800 DEG C of fluidized bed roastings or rotary kiln baking 5～15min, then under oxygen-free atmosphere, room temperature is naturally cooled to, it is thus achieved that with the porous structure material of magnetic iron ore thing dominant phase.
Said method is preferably following form:
Method one:
Pyrite is broken, screening obtains the pyrite particle thing that particle size range is 0.5～0.8mm；Limonite ore is broken, screening obtains the limonite particulate matter that particle size range is 0.9～4mm；Described pyrite particle thing and described limonite particulate matter 3:1～1:1 in mass ratio are mixed, under anaerobic in 550～800 DEG C of fluidized bed roastings or rotary kiln baking 5～15min, then under oxygen-free atmosphere, room temperature is naturally cooled to, particle size range 0.9～4mm limonite particulate matter generation phase in version formed particle size range 0.9～4mm with the porous structure material of magnetic iron ore thing dominant phase, particle size range 0.5～0.8mm pyrite particle thing generation phase in version formed particle size range 0.5～0.8mm with the porous structure material of magnetic iron ore thing dominant phase, screened acquisition 0.5～0.8mm and 0.9～4mm two kind of particle size range with the porous structure material of magnetic iron ore thing dominant phase.Although there occurs phase transformation and reaction before and after baking mixed, but the apparent particle diameter of particulate matter being basically unchanged.
Method two:
(1) the pyrite content industrial flotation of sulfur concentrate powder more than 90% is chosen, weigh account for described iron concentrate opaque amount 1～3%, the particle diameter powdered biomass less than 1.0mm, weigh again and account for described iron concentrate opaque amount 2～the binding agent of 5%, by iron concentrate powder, powdered biomass and binding agent mix homogeneously, it is thus achieved that compound A；
(2) limonite ore is broken, screening obtains the particle diameter brown ocher less than 0.15mm, weigh account for brown ocher quality 1～3%, the particle diameter powdered biomass less than 1.0mm, weigh again and account for brown ocher quality 2～the binding agent of 5%, by brown ocher, powdered biomass and binding agent mix homogeneously, it is thus achieved that compound B；
(3) according to iron concentrate powder and brown ocher mass ratio 3:1～1:1, first in pan-pelletizer, compound A balling-up is added to particle diameter 3～4mm, compound B it is gradually added the most again in pan-pelletizer, continue balling-up to particle diameter 5～8mm, it is thus achieved that be coated with the hybrid particles thing of brown ocher as internal layer, outside it with iron concentrate powder；
(4) by dried for described hybrid particles thing under anaerobic in 550～800 DEG C of fluidized bed roastings or rotary kiln baking 5～15min, then under at oxygen-free atmosphere, naturally cool to room temperature, be i.e. able to the porous structure material that magnetic iron ore is dominant phase.
Method three:
(1) limonite ore is broken, screening obtains the particle diameter limonite particulate matter less than 0.15mm, pyrite is broken into the pyrite particle thing that particle diameter is 3～5mm, weigh account for described limonite particulate matter quality 1～3%, the particle diameter powdered biomass less than 1.0mm, weigh again and account for described limonite particulate matter quality 2～the binding agent of 5%, mixing limonite granule, biomass powder and binding agent, obtain compound C；
(2) in pan-pelletizer, pyrite particle thing first it is sprinkled into, it is gradually added compound C balling-up to particle diameter 5～8mm with limonite particulate matter mass ratio 3:1～1:1, it is thus achieved that be coated with the hybrid particles thing of limonite as internal layer, outside it with pyrite particle thing according still further to pyrite particle thing；
(3) by dried for described hybrid particles thing under anaerobic in 550～800 DEG C of fluidized bed roastings or rotary kiln baking 5～15min, then under at oxygen-free atmosphere, naturally cool to room temperature, be i.e. able to the porous structure material that magnetic iron ore is dominant phase.
Method four:
100 mesh sieves acquisition brown ochers are crossed after broken for limonite ore, choose pyrite content more than 90%, particle diameter cross the industrial flotation of sulfur concentrate powder of 100 mesh sieves, iron concentrate powder is 3:1～1:1 with the mass ratio of brown ocher, weigh account for described iron concentrate opaque amount 1～3%, the particle diameter powdered biomass less than 1.0mm, then weigh and account for described iron concentrate opaque amount 2～the binding agent of 5%；By iron concentrate powder, brown ocher, powdered biomass and binding agent mix homogeneously, then pelletize be particle diameter 5～8mm hybrid particles thing, by dried for hybrid particles thing under anaerobic in 550～800 DEG C of fluidized bed roastings or rotary kiln baking 5～15min, then under at oxygen-free atmosphere, naturally cool to room temperature, be i.e. able to the porous structure material that magnetic iron ore is dominant phase.
Limonite and pyrite are blended in roasting under oxygen-free atmosphere (nitrogen atmosphere), both can utilize the chemical oxygen roasted pyrite of wherein goethitum, improve gas SO2Concentration, eliminate the elemental sulfur condensation problem that independent roasted pyrite produces, pyritous chemical energy can be utilized again to realize the reduction roasting of limonite, goethitum therein is changed into newborn magnetic iron ore；By powdered biomass and the use of binding agent, particle pore structure can be enriched, strengthen its mechanical strength；Utilize magnetic characteristic to facilitate it to recycle, improve magnetic iron ore utilization rate.
Present invention is mainly reflected in the following aspects:
1, the present invention thermally decomposes the reaction formation SO of Lattice Oxygen in the goethitum in the elemental sulfur and limonite produced by the baking mixed pyrite that makes full use of of pyrite with limonite2, not only solve the gas circuit that independent roasted pyrite exists and result in blockage problem because sulfur condenses, it is also possible to improve SO in gas2Concentration, improves gas washing in SA production efficiency；
2, the present invention selects the limonite with loose structure feature baking mixed with pyrite, sulfur steam can penetrate into inside limonite particle voids, not only increase the reaction rate of sulfur steam and goethite crystals oxygen, and improve complete degree of reaction, finally make goethitum be completely transformed into magnetic iron ore；
3, the present invention not only makes pyrite be changed into the magnetic iron ore with loose structure feature, and the goethitum in limonite is also completely transformed into magnetic iron ore, compared with the magnetic iron ore that the former is formed, the latter has higher chemistry and biological respinse activity, has higher application effect as Environmental Engineering Material；
4, by the present invention in that with biomass powder, binding agent, promote the sintering of iron concentrate powder, utilize pan-pelletizer granulating and forming, the spherical particle material with loose structure feature being made up of magnetic iron ore can be formed by anaerobic roasting；The interpolation of biomass powder enriches particle pore structure；The use of binding agent enhances granule strength；This granule is used for denitrogenation dephosphorizing, or the ion-exchange reactions filtrate of recovery heavy metal as biofilter material, and can realize the manipulation of material magnetic；
5, by the product susceptibility prepared by the inventive method between 1249～2740X10-8m3/ kg, product specific surface area 6.9～10.2m2/g.Product is big more than 100 times of the speed ratio pyrite of chemical oxidation in water, with the reaction rate of heavy metal copper ion than pyrite big more than 50 times.
Four, accompanying drawing explanation
Fig. 1 is the X-ray diffractogram of the embodiment of the present invention 1 products therefrom；
Fig. 2 is the field emission scanning electron microscope image of the embodiment of the present invention 1 products therefrom；Wherein A figure is 0.5～0.8mm pyrite thermal decomposition product；B figure is with sulfur steam reaction product, 0.9～4mm limonite and sulfur steam reaction product, pyrite thermal decomposition product and limonite all demonstrate that product has the loose structure feature in nano-micrometre grade space；
Fig. 3 is the X-ray diffractogram of the embodiment of the present invention 2 products therefrom；
Fig. 4 is the field emission scanning electron microscope image of the embodiment of the present invention 2 products therefrom；
Fig. 5 is the X-ray diffractogram of the embodiment of the present invention 3 products therefrom；
Fig. 6 is the field emission scanning electron microscope image of the embodiment of the present invention 3 products therefrom；
Fig. 7 is the X-ray diffractogram of the embodiment of the present invention 4 products therefrom；
Fig. 8 is the field emission scanning electron microscope image of the embodiment of the present invention 4 products therefrom；
Fig. 9 is the X-ray diffractogram of the embodiment of the present invention 5 products therefrom；
Figure 10 is the field emission scanning electron microscope image of the embodiment of the present invention 5 products therefrom.
Five, detailed description of the invention
The non-limiting examples of the present invention is described below.
Embodiment 1:
The porous structure material that it is dominant phase with magnetic iron ore that the present embodiment is prepared as follows:
Selecting the pyrite content Ore more than 90%, crushing and screening obtains 0.5～0.8mm pyrite particle thing；
Selecting the goethitum content limonite ore more than 85%, crushing and screening obtains the limonite particulate matter of 3～3.5mm；
Above-mentioned pyrite particle thing is mixed homogeneously according to the ratio of mass percent 2:1 with limonite particulate matter；
Said mixture material join in rotary kiln under oxygen-free atmosphere in 700 DEG C of roasting 10min and at oxygen-free atmosphere under naturally cool to room temperature, it is thus achieved that the porous structure material that target product is made up of magnetic iron ore；Wherein, particle size range 3～3.5mm limonite particulate matter generation phase in version formed particle size range 3～3.5mm with the porous structure material of magnetic iron ore thing dominant phase, particle size range 0.5～0.8mm pyrite particle thing generation phase in version formed particle size range 0.5～0.8mm with the porous structure material of magnetic iron ore thing dominant phase, screened acquisition 0.5～0.8mm and 3～3.5mm two kind of particle size range with the porous structure material of magnetic iron ore thing dominant phase.
The X-ray diffractogram of gained target product as it is shown in figure 1, as can be seen from the figure product be substantially made up of magnetic iron ore.
The field emission scanning electron microscope figure of gained target product is as in figure 2 it is shown, as can be seen from the figure 0.5～0.8mm pyrite thermal decomposition product, 0.9～4mm limonite and sulfur steam reaction product all demonstrate that product has the loose structure feature of nano-micrometre level crystal particle diameter and intergranular pore.
After tested, the susceptibility of the present embodiment products therefrom is 1783 × 10-8m3/ kg, product specific surface area 7.1m2/g.Product is big more than 100 times of the speed ratio pyrite of chemical oxidation in water, with the reaction rate of heavy metal copper ion than pyrite big more than 50 times.
Embodiment 2:
The present embodiment prepares magnetic iron ore porous structure material as follows:
Selecting the pyrite content Ore more than 90%, crushing and screening obtains 0.5～0.8mm pyrite particle thing；
Selecting the goethitum content limonite ore more than 90%, crushing and screening obtains the limonite particulate matter of 0.5～0.8mm；
Above-mentioned pyrite particle thing is mixed homogeneously according to the ratio of mass percent 2.5:1 with limonite particulate matter；
Said mixture material join in rotary kiln under protective atmosphere in 700 DEG C of roasting 10min and at protective atmosphere under naturally cool to room temperature, it is thus achieved that target product.
Fig. 3 is the XRD figure of products therefrom, and as can be seen from the figure product is with magnetic iron ore for dominant phase；
Fig. 4 be the field emission scanning electron microscope image of product, as can be seen from the figure product has the loose structure feature of nano-micrometre level crystal particle diameter and intergranular pore.
After tested, the unit mass susceptibility of the present embodiment products therefrom is 2740 × 10-8m3/ kg, product specific surface area 7.9m2/g.Product is big more than 100 times of the speed ratio pyrite of chemical oxidation in water, with the reaction rate of heavy metal copper ion than pyrite big more than 50 times.
Embodiment 3
The present embodiment prepares magnetic iron ore porous structure material as follows:
(1) the pyrite content industrial flotation of sulfur concentrate powder more than 90% is chosen, by 2kg iron concentrate powder, 40g particle diameter less than 1.0mm stalk powder and 80g sodium silicate binder mix homogeneously, it is thus achieved that compound A；
(2) limonite ore is broken, screening obtains the particle diameter brown ocher less than 0.15mm, by 1kg limonite particulate matter, 15g particle diameter less than 1.0mm stalk powder and 40g sodium silicate binder mix homogeneously, it is thus achieved that compound B；
(3) in pan-pelletizer, compound A is first added, start pan-pelletizer, compound A is made to roll in pan-pelletizer with the speed of 40r/min, water spray makes the compound A surface wettability in pan-pelletizer, balling-up to particle diameter 3～4mm, in pan-pelletizer, it is gradually added compound B the most again, continues balling-up to particle diameter 5～10mm, it is thus achieved that be coated with the hybrid particles thing of brown ocher as internal layer, outside it with iron concentrate powder；
(4) by hybrid particles thing hot-air is dried to water content less than after 2% under anaerobic in 800 DEG C of roasting 10min, then under at oxygen-free atmosphere, naturally cool to room temperature, obtain target product.
Fig. 5 is the XRD figure of products therefrom, and as can be seen from the figure product is with magnetic iron ore for dominant phase；
Fig. 6 be the field emission scanning electron microscope image of product, as can be seen from the figure product has the loose structure feature of nano-micrometre level crystal particle diameter and intergranular pore.
After tested, the unit mass susceptibility of the present embodiment products therefrom is 2217 × 10-8m3/ kg, product specific surface area 8.4m2/g.Product is big more than 100 times of the speed ratio pyrite of chemical oxidation in water, with the reaction rate of heavy metal copper ion than pyrite big more than 50 times.
Embodiment 4
The present embodiment prepares magnetic iron ore porous structure material as follows:
(1) limonite ore is broken, screening obtains the 1kg limonite particulate matter that particle diameter is 0.05～0.1mm, pyrite is broken into the 3kg pyrite particle thing that particle diameter is 3～4mm, weigh the 20g particle diameter stalk powder less than 1.0mm, weigh 50g sodium silicate binder again, mixing limonite particulate matter, stalk powder and binding agent, obtain compound C；
(2) in pan-pelletizer, pyrite particle thing first it is sprinkled into, uniformly spray water on the surface of pyrite particle thing and make its surface wettability, the most at the uniform velocity it is sprinkled into compound C and keeps particle surface dampness to particle surface water spray simultaneously, to adhere to the powder material added, pan-pelletizer makes compound C progressively be coated on pyrite particle thing inclination 25～30 degree with 50r/min rotational speed, along with granule rolls in pan-pelletizer, particle diameter constantly increases, until particle diameter is 6～8mm, obtain with pyrite particle thing as internal layer, the hybrid particles thing of brown ocher it is coated with outside it；
(3) by hybrid particles thing hot-air is dried to water content less than after 2% under anaerobic in 550 DEG C of roasting 15min, then under at oxygen-free atmosphere, naturally cool to room temperature, obtain target product.
Fig. 7 is the XRD figure of products therefrom, and as can be seen from the figure product is with magnetic iron ore for dominant phase；
Fig. 8 be the field emission scanning electron microscope image of product, as can be seen from the figure product has the loose structure feature of nano-micrometre level crystal particle diameter and intergranular pore.
After tested, the unit mass susceptibility of the present embodiment products therefrom is 1629 × 10-8m3/ kg, product specific surface area 10.2m2/g.Product is big more than 100 times of the speed ratio pyrite of chemical oxidation in water, with the reaction rate of heavy metal copper ion than pyrite big more than 50 times.
Embodiment 5
Select the goethitum content limonite ore more than 90%, crushed 100 mesh sieves and obtain brown ocher；
Choose the pyrite content industrial flotation of sulfur concentrate powder more than 90%；
Sawdust is pulverized the sawdust powder obtaining particle diameter less than 1.0mm；
Weighing 1kg brown ocher, 2.5kg iron concentrate powder, 50g sawdust powder, 125g sodium metaaluminate binding agent, mix homogeneously obtains compound；
Measure 1 liter of water uniform with compound mix, obtain the hybrid particles thing of particle diameter 6～8mm with comminutor molding；
Hybrid particles thing is dried in hot-air to water content less than joining after 2% in rotary kiln in a nitrogen atmosphere in 800 DEG C of roasting 10min and be cooled to room temperature in a nitrogen atmosphere, it is thus achieved that the material with loose structure characteristic being made up of nanometer submicron magnetic iron ore.
Fig. 9 is the XRD figure of products therefrom, and as can be seen from the figure product is with magnetic iron ore for dominant phase；
Figure 10 be the field emission scanning electron microscope image of product, as can be seen from the figure product has the loose structure feature of nano-micrometre level crystal particle diameter and intergranular pore.
After tested, the unit mass susceptibility of the present embodiment products therefrom is 1417 × 10-8m3/ kg, product specific surface area 7.3m2/g.Product is big more than 100 times of the speed ratio pyrite of chemical oxidation in water, with the reaction rate of heavy metal copper ion than pyrite big more than 50 times.
Claims (1)
1. the method that a kind is prepared is the porous structure material of dominant phase with magnetic iron ore, it is characterised in that: by pyrite and
Limonite is baking mixed to be prepared；Pyrite and limonite are mixed or pelletize, in nothing according to the ratio of mass ratio 3:1～1:1
Through 550～800 DEG C of fluidized bed roastings or rotary kiln baking 5～15min under the conditions of oxygen, then under oxygen-free atmosphere, naturally cool to room temperature,
Obtain the porous structure material with magnetic iron ore thing dominant phase；
Carry out the most as follows:
(1) choose the pyrite content industrial flotation of sulfur concentrate powder more than 90%, weigh account for described iron concentrate opaque amount 1～3%,
Particle diameter is less than the powdered biomass of 1.0mm, then weighs and account for described iron concentrate opaque amount 2～the binding agent of 5%, by iron concentrate powder,
Powdered biomass and binding agent mix homogeneously, it is thus achieved that compound A；
(2) limonite ore is broken, screening obtains the particle diameter brown ocher less than 0.15mm, weighs and accounts for brown ocher quality
1～3%, particle diameter is less than the powdered biomass of 1.0mm, then weigh and account for brown ocher quality 2～the binding agent of 5%, by brown ocher,
Powdered biomass and binding agent mix homogeneously, it is thus achieved that compound B；
(3) according to iron concentrate powder and brown ocher mass ratio 3:1～1:1, in pan-pelletizer, compound A balling-up is first added to grain
Footpath, 3～4mm, is gradually added compound B the most again in pan-pelletizer, continues balling-up to particle diameter 5～8mm, it is thus achieved that with sulfur essence
Breeze is internal layer, is coated with the hybrid particles thing of brown ocher outside it；
(4) by dried for described hybrid particles thing under anaerobic in 550～800 DEG C of fluidized bed roastings or rotary kiln baking
5～15min, then under at oxygen-free atmosphere, naturally cool to room temperature, be i.e. able to the porous structure material that magnetic iron ore is dominant phase.
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| CN201410452899.0A CN104164557B (en) | 2014-09-05 | 2014-09-05 | The method of the baking mixed preparation of a kind of pyrite and limonite taking magnetic iron ore as the porous structure material of main thing phase |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151032A (en) * | 2017-06-07 | 2017-09-12 | 南京大学 | A kind of preparation method of artificial magnetic iron ore material and application |
| CN110002806A (en) * | 2019-04-23 | 2019-07-12 | 南京大学 | A kind of lightweight sustained release denitrogenation dephosphorizing material and the preparation method and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4466362A (en) * | 1982-03-03 | 1984-08-21 | Massachusetts Institute Of Technology | Method of removing sulfur and other contaminants from the coal in coal-oil slurries |
| SU1684262A1 (en) * | 1989-03-30 | 1991-10-15 | Химико-металлургический институт АН КазССР | Method of preparing pyrrhotite |
| JPH11226447A (en) * | 1998-02-12 | 1999-08-24 | Mitsubishi Heavy Ind Ltd | Method for desulfurizing coal and device therefor |
| CN1454851A (en) * | 2002-04-17 | 2003-11-12 | 国际商业机器公司 | Synthesizing of magnetite nano particles and method for forming iron-base nano material |
| CN101235426A (en) * | 2008-02-27 | 2008-08-06 | 周灿 | Technique for preparing iron refined powder by troilite mixing burning brown hematite and specularite |
| CN102320668A (en) * | 2011-06-03 | 2012-01-18 | 合肥工业大学 | Pyrite nano mineral material and preparation method thereof |
| CN102826642A (en) * | 2012-09-10 | 2012-12-19 | 合肥工业大学 | Method for recovering wastewater by using colloform pyrite |
-
2014
- 2014-09-05 CN CN201610111693.0A patent/CN105734269B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4466362A (en) * | 1982-03-03 | 1984-08-21 | Massachusetts Institute Of Technology | Method of removing sulfur and other contaminants from the coal in coal-oil slurries |
| SU1684262A1 (en) * | 1989-03-30 | 1991-10-15 | Химико-металлургический институт АН КазССР | Method of preparing pyrrhotite |
| JPH11226447A (en) * | 1998-02-12 | 1999-08-24 | Mitsubishi Heavy Ind Ltd | Method for desulfurizing coal and device therefor |
| CN1454851A (en) * | 2002-04-17 | 2003-11-12 | 国际商业机器公司 | Synthesizing of magnetite nano particles and method for forming iron-base nano material |
| CN101235426A (en) * | 2008-02-27 | 2008-08-06 | 周灿 | Technique for preparing iron refined powder by troilite mixing burning brown hematite and specularite |
| CN102320668A (en) * | 2011-06-03 | 2012-01-18 | 合肥工业大学 | Pyrite nano mineral material and preparation method thereof |
| CN102826642A (en) * | 2012-09-10 | 2012-12-19 | 合肥工业大学 | Method for recovering wastewater by using colloform pyrite |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151032A (en) * | 2017-06-07 | 2017-09-12 | 南京大学 | A kind of preparation method of artificial magnetic iron ore material and application |
| CN110002806A (en) * | 2019-04-23 | 2019-07-12 | 南京大学 | A kind of lightweight sustained release denitrogenation dephosphorizing material and the preparation method and application thereof |
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