CN104357651A - Powder magnetization roasting and cooling system - Google Patents
Powder magnetization roasting and cooling system Download PDFInfo
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- CN104357651A CN104357651A CN201410597539.XA CN201410597539A CN104357651A CN 104357651 A CN104357651 A CN 104357651A CN 201410597539 A CN201410597539 A CN 201410597539A CN 104357651 A CN104357651 A CN 104357651A
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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
- 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
- C22B1/26—Cooling of roasted, sintered, or agglomerated ores
Abstract
The invention discloses a powder magnetization roasting and cooling system, and belongs to the technical field of mining equipment. The powder magnetization roasting and cooling system disclosed by the invention comprises a feeding machine, wherein a discharge opening of the feeding machine is connected with a suspended preheating system which consists of 2-5 levels of suspended preheaters, a smoke gas outlet of the first level suspended preheater is connected with a draught fan, and the draught fan is connected with a dust collector; the suspended preheating system is connected with a magnetization roasting furnace and a cooling system respectively, and a smoke gas inlet of the magnetization roasting furnace is connected with a smoke gas outlet of a hot blast furnace; a burner is arranged at the smoke gas inlet of the magnetization roasting furnace. The system disclosed by the invention has the advantages that the investment is small, the magnetization roasting is quick, the production efficiency is high, the production cost is low, the energy consumption is low, and the like. Compared with an existing magnetization roasting system such as the suspended magnetization roasting furnace and a flash furnace, the system has the advantages that the technology is simple and compact, the roasted ore cooling is selectable, the investment is lower, the practicality is higher, and the like.
Description
Technical field
The present invention relates to powder magnetizing roasting and cooling system, the magnetizing roasting of especially ultra-fine weak magnetite powder and a cooling process system, comprise magnetizing roasting and the cooling process system of the weak magnetites such as ultra-fine spathic iron ore, rhombohedral iron ore, limonite, pyrrhosiderite, pyrite.
Background technology
Along with the high speed development of Chinese national economy, increasing to the demand of ore resource, especially iron ore deposit.At present, most of China iron ore needs import, and iron ore imports price once rose, and domestic iron and steel enterprises profit space is sharply reduced, and for realizing the Sustainable development of Chinese Iron & Steel Enterprises, must develop domestic iron ore deposit.The iron ore deposit of China 97% is lean ore, and rich ore is few, and lean ore employing gravity treatment, flotation are also difficult to realize the effective of iron resources with the ore-dressing technique that high intensity magnetic separation combines and are separated.The iron ore of the superfine powder formed in exploitation, ore dressing process almost can not use, and adopts magnetizing roasting to make the iron ore of weak magnetic form the magnetite of strong magnetic, is separated iron ore and gangue, has been proved to be effective separation method by low intensity magnetic separation.But all the time, the magnetizing roasting technology of the weak magnet mineral of superfine powder and roasting system are failed to the progress of making a breakthrough property, after popularization, its processing parameter is difficult to control, and production cost is high.Adopt reduction shaft furnace roasting system, or adopt rotary kiln restoring system, its roasting time length, reduction process are slow, and production efficiency is low, and energy consumption height waits shortcomings, does not all obtain and further develops or stopped production.USSR (Union of Soviet Socialist Republics) also once had rotary kiln, but because its production cost is high and the high restriction of energy consumption, also stopped producing.Also have investigator that superfine powder is made pellet, send into rotary kiln and carry out magnetizing roasting, then carry out magnetic separation; sorting index is better, but because technical process is long and process is complicated, energy consumption is higher; economic worth is low, causes this kind of technology to never have large-scale industrialization and applies.Also have investigator to invent suspending magnetization roasting device, as suspending magnetization roasting device, flash magnetization roasting stove etc., but there is the shortcomings such as complex structure, Atmosphere Control is complicated, process for cooling is single.
Summary of the invention
Goal of the invention of the present invention is: for above-mentioned Problems existing, a kind of powder magnetizing roasting and cooling system are provided, the particularly spathic iron ore of superfine powder (<100 μm), rhombohedral iron ore, limonite, the refractory iron ore such as pyrrhosiderite and pyrite is under high temperature reducing conditions and suspended state, within tens of second, realize weak magnetic (Fe-2O3) change to the magnetite of strong magnetic or γ-Fe-2O3, weak for ultrafine powder magnetic spathic iron ore, rhombohedral iron ore, limonite, pyrrhosiderite becomes the magnetite of strong magnetic or the magnetizing roasting of γ-Fe-2O3 and cooling process system with iron ore magnetic roastings such as pyrite.
The technical solution used in the present invention is as follows:
Powder magnetizing roasting of the present invention and cooling system, comprise feeding machine, the discharge port of described feeding machine is connected with the suspension preheating system be made up of 2 ~ 5 grades of suspended preheaters, and the exhanst gas outlet of described first step suspended preheater is connected with induced draft fan, and described induced draft fan is connected with dust-precipitator; Described suspension preheating system connects magnetization roasting furnace and cooling system respectively, and the gas approach of described magnetization roasting furnace exports with described hot-blast stove fume and is connected; The gas approach place of described magnetization roasting furnace is provided with burner.
Owing to have employed said structure, ultra-fine powdered iron ore (full Iron grade 39%) enters pipeline by feeding machine and carries out quick heat exchange with the flue gas in pipeline, under the effect of air-flow, ash-laden gas enters suspension preheating system by flue gas and feed separation, flue gas is taken away by induced draft fan by pipeline, the material that suspension preheating system is accepted enters in magnetization roasting furnace and carries out suspension roasting magnetization, material after roasting enters material suspended pre-heating system by pipeline under flue gas effect, ash-laden gas completes material and is separated with flue gas in material suspended pre-heating system, the material be separated then enters cooling system (air cooling or water-cooled), strong magnet ore deposit (magnetite or γ-Fe-is obtained after cooling
2o
3).The waste gas that material suspended pre-heating system produces is connected with dust-precipitator with induced draft fan successively through piping, and in flue gas, contained dust is collected by dust-precipitator, and waste gas directly discharges.Compared with traditional rotary system, the present invention can save the very large reduction apparatus-rotary kiln of investment, and mineral processing amount is large, and energy consumption significantly reduces, and production cost significantly reduces; According to character and the required atmosphere of roasting mineral, by regulate burner fill character and the flow of different atmosphere, make it the hot gas generation secondary combustion with vertical blast pipe and spiral blast pipe, thus oxidisability (strong oxidizing property, weak oxide), neutrality, reductibility (strong reducing property, week reduction) atmosphere will be adjusted to, the roasting of mineral is reacted with magnetization and once completes rapidly.Compared with existing magnetizing roasting system, technical process is simpler, compact, and can select water-cooled or air cooling as required, and practicality is stronger.Calcination atmosphere in roasting cooling system of the present invention needs optional oxidisability, neutrality, reducing atmosphere according to roasted ore, wider than the material choice object of existing magnetizing roasting system, available lower energy consumption and investment, complete magnetizing roasting and the cooling of the iron ores such as superfine powder spathic iron ore, rhombohedral iron ore, limonite, pyrrhosiderite and pyrite, improve the rate of recovery and the grade in weak magnetic ore deposit.
Powder magnetizing roasting of the present invention and cooling system, described suspension preheating system is made up of three grades of suspended preheaters, it comprises first step suspended preheater, second stage suspended preheater and third stage suspended preheater, the discharge port of wherein said feeding machine is connected with the feeding mouth of first stage suspension preheater, and the exhanst gas outlet of described first step suspended preheater is connected with induced draft fan; The discharge port of described first step suspended preheater is connected with the gas approach of second stage suspended preheater, and second stage suspended preheater discharge port is connected with magnetization roasting furnace; The exhanst gas outlet of described magnetization roasting furnace is connected with third stage suspended preheater opening for feed; The gas approach of described second stage suspended preheater is connected with the exhanst gas outlet of third stage suspended preheater, and the discharge port of described third stage suspended preheater is connected with cooling system.
Owing to have employed said structure, ultra-fine powdered iron ore (full Iron grade 39%) enters pipeline by feeding machine and carries out quick heat exchange with the flue gas in pipeline, under the effect of air-flow, ash-laden gas enters first stage suspension preheater by flue gas and feed separation, flue gas is taken away by induced draft fan by pipeline, the material accepted enters and second stage suspended preheater 2 through air valve, the pipeline be connected and flue gas carry out second time heat exchange, now temperature of charge reaches more than 350 DEG C, ash-laden gas enters secondary suspended preheater and carries out being separated of flue gas and material, flue gas enters the pipeline be connected with first stage suspension preheater, material is entered in magnetization roasting furnace by air valve and carries out suspension roasting magnetization, material after roasting enters third stage suspended preheater 3 by pipeline under flue gas effect, ash-laden gas completes material and is separated with flue gas in third stage suspended preheater, the flue gas be separated enters second stage suspended preheater by pipeline, material then enters cooling system (air cooling or water-cooled) by T-valve, strong magnet ore deposit (magnetite or γ-Fe-is obtained after cooling
2o
3).The waste gas that first stage suspension preheater produces is connected with dust-precipitator with induced draft fan successively through piping, and in flue gas, contained dust is collected by dust-precipitator, and waste gas directly discharges.
Powder magnetizing roasting of the present invention and cooling system, the pipeline that the discharge port of described first step suspended preheater is connected with the gas approach of second stage suspended preheater and the pipeline that second stage suspended preheater discharge port is connected with magnetization roasting furnace are equipped with air valve.
Owing to have employed said structure, can be controlled pipeline by air valve, operate very easy, easy to use.
Powder magnetizing roasting of the present invention and cooling system, described cooling system comprises air cooling system and water-cooling system, the discharge port of wherein said third stage suspended preheater is connected with T-valve, a discharging end water receiving cooling system of described T-valve, gives a dinner for a visitor from afar cooling system in another lower end.
Owing to have employed said structure, according to mineralogical property and actual demand, T-valve discharging end one end water receiving is cold, and another termination air cooling also can need to switch between according to cooling.
Powder magnetizing roasting of the present invention and cooling system, be wherein equipped with temperature element and pressure element, to magnetizing roasting real-time process monitoring in every grade of suspended preheater, magnetization roasting furnace, hotblast stove, dust-precipitator and cooling system respectively.
Owing to have employed said structure, the key equipments such as every grade of suspended preheater, magnetization roasting furnace, hotblast stove, dust-precipitator are equipped with temperature element and pressure element, carry out monitoring in real time, and regulate pressure and temperature according to need of production magnetizing roasting process.Make product magnetite through low intensity magnetic separation, can be recycled rate >90%, the high grade iron concentrate of full Iron grade >65%, sorting index is good.
Powder magnetizing roasting of the present invention and cooling system, described magnetization roasting furnace is made up of spiral blast pipe, vertical blast pipe, opening for feed, reaction chamber, escape pipe and burner, wherein reaction chamber is made up of right cylinder and bottom, described opening for feed is placed in by rounding frustum, described spiral blast pipe tangentially enters the lower end of the upper rounding frustum of magnetization roasting furnace, described vertical blast pipe is directly connected with the upper rounding frustum lower end of magnetization roasting furnace, and described little burner is loaded on the lower end of magnetization roasting furnace.
Owing to have employed said structure, according to character and the required atmosphere of roasting mineral, by with the coordinating of spiral blast pipe and vertical blast pipe, independently can regulate smoke components, be adjusted to oxidisability, neutrality, reducing atmosphere respectively, the roasting of mineral reacted with magnetization and once completes rapidly.
Powder magnetizing roasting of the present invention and cooling system, wherein said spiral blast pipe is equipped with flow control valve.
Owing to have employed said structure, can control the air quantity entering magnetization roasting furnace and regulate, guarantee its roasting effect.
Powder magnetizing roasting of the present invention and cooling system, wherein every grade of suspended preheater is the one in cyclone preheater, shaft preheater or combination preheater; The blast of described hotblast stove is adjustable.
Owing to have employed said structure, can select arbitrarily according to actual needs, applied widely, be applicable to applying.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
Compared with traditional rotary system, the present invention can save the very large reduction apparatus-rotary kiln of investment, and mineral processing amount is large, and energy consumption significantly reduces, and production cost significantly reduces; Compared with existing magnetizing roasting system, technical process is simpler, compact, and can select water-cooled or air cooling as required, and practicality is stronger.Calcination atmosphere in roasting cooling system of the present invention needs optional oxidisability, neutrality, reducing atmosphere according to roasted ore, wider than the material choice object of existing magnetizing roasting system, available lower energy consumption and investment, complete magnetizing roasting and the cooling of the iron ores such as superfine powder spathic iron ore, rhombohedral iron ore, limonite, pyrrhosiderite and pyrite, improve the rate of recovery and the grade in weak magnetic ore deposit.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is suspending magnetization roasting of the present invention and cooling system schematic diagram.
Mark in figure: 1-first step suspended preheater, 2-second stage suspended preheater, 3-third stage suspended preheater, 4-magnetization roasting furnace, 5-cooling system, 6-hotblast stove, 7-burner, 8-dust-precipitator, 9-induced draft fan, 10-feeding machine, 11,12-air valve.
Embodiment
All features disclosed in this specification sheets, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification sheets (comprising any accessory claim, summary), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
As shown in Figure 1, powder magnetizing roasting of the present invention and cooling system, comprise feeding machine 10, the discharge port of described feeding machine 10 is connected with the suspension preheating system be made up of 2 ~ 5 grades of suspended preheaters, the exhanst gas outlet of described first step suspended preheater 1 is connected with induced draft fan 9, and described induced draft fan 9 is connected with dust-precipitator 8; Described suspension preheating system connects magnetization roasting furnace 4 and cooling system 5 respectively, described cooling system 5 comprises air cooling system and water-cooling system, the discharge port of wherein said third stage suspended preheater 3 is connected with T-valve 13, a discharging end water receiving cooling system of described T-valve 13, give a dinner for a visitor from afar cooling system in another lower end; The gas approach of described magnetization roasting furnace 4 is connected with described hotblast stove 6 exhanst gas outlet; Described hotblast stove 6 blast is adjustable, and the gas approach place of described magnetization roasting furnace 4 is provided with burner 7.
The system of suspension preheating described in this example is made up of three grades of suspended preheaters, and it comprises first step suspended preheater 1, second stage suspended preheater 2 and third stage suspended preheater 3, and wherein the discharge port of feeding machine 10 is connected with the feeding mouth of first stage suspension preheater 1.The discharge port of first stage suspension preheater 1 is connected with the gas approach of pipeline with second stage suspended preheater 2 by air valve 12.Second stage suspended preheater 2 discharge port is connected with magnetization roasting furnace 4 with pipeline by air valve 11.The exhanst gas outlet of magnetization roasting furnace 4 is connected with third stage suspended preheater 3 opening for feed by pipeline.Hotblast stove 6 exhanst gas outlet is connected by the gas approach of pipeline with magnetization roasting furnace 4.Burner 7 is connected with magnetization roasting furnace 4 gas approach by pipeline.The discharge port of third stage suspended preheater 3 is connected with cooling system 5 by T-valve 13.The exhanst gas outlet of third stage suspended preheater 3 is connected by the gas approach of pipeline with second stage suspended preheater 2.The exhanst gas outlet of first stage suspension preheater 1 is connected with induced draft fan 9 by pipeline.Induced draft fan 9 is connected with dust-precipitator 8 by pipeline.Wherein temperature element and pressure element are housed respectively, to magnetizing roasting real-time process monitoring in every grade of suspended preheater, magnetization roasting furnace 4, hotblast stove 6, dust-precipitator 8 and cooling system 5.Described magnetization roasting furnace 4 is made up of spiral blast pipe, vertical blast pipe, opening for feed, reaction chamber, escape pipe and burner 7, wherein reaction chamber is made up of right cylinder and bottom, described opening for feed is placed in by rounding frustum, described spiral blast pipe tangentially enters the lower end of the upper rounding frustum of magnetization roasting furnace 4, described vertical blast pipe is directly connected with the upper rounding frustum lower end of magnetization roasting furnace 4, and described burner 7 is loaded on the lower end of magnetization roasting furnace.Wherein said spiral blast pipe is equipped with flow control valve; Wherein every grade of suspended preheater is the one in cyclone preheater, shaft preheater or combination preheater.
Ultra-fine powdered iron ore (full Iron grade 39%) enters pipeline by feeding machine and carries out quick heat exchange with the flue gas in pipeline, under the effect of air-flow, ash-laden gas enters first stage suspension preheater 1 by flue gas and feed separation, flue gas is taken away by induced draft fan 9 by pipeline, the material accepted enters the pipeline that is connected with second stage suspended preheater 2 and flue gas carries out second time heat exchange through air valve 12, now temperature of charge reaches more than 350 DEG C, ash-laden gas enters secondary suspended preheater and carries out being separated of flue gas and material, flue gas enters the pipeline be connected with first stage suspension preheater, material is entered in magnetization roasting furnace 4 by air valve 11 and carries out suspension roasting magnetization, material after roasting enters third stage suspended preheater 3 by pipeline under flue gas effect, ash-laden gas completes material and is separated with flue gas in third stage suspended preheater 3, the flue gas be separated enters second stage suspended preheater 2 by pipeline, material then enters cooling system (air cooling or water-cooled) by T-valve 13, strong magnet ore deposit (magnetite or γ-Fe-2O3) is obtained after cooling.The waste gas that first stage suspension preheater produces is connected with dust-precipitator with induced draft fan successively through piping, and in flue gas, contained dust is collected by dust-precipitator, and waste gas directly discharges.
The key equipments such as every grade of suspended preheater, magnetization roasting furnace, hotblast stove, dust-precipitator are equipped with temperature element and pressure element, carry out monitoring in real time, and regulate pressure and temperature according to need of production magnetizing roasting process.
Product magnetite obtained above, through low intensity magnetic separation, can be recycled rate >90%, and the high grade iron concentrate of full Iron grade >65%, sorting index is good.
Compared with traditional rotary system, the present invention can save the very large reduction apparatus-rotary kiln of investment, and mineral processing amount is large, and energy consumption significantly reduces, and production cost significantly reduces; Compared with existing magnetizing roasting system, technical process is simpler, compact, and can select water-cooled or air cooling as required, and practicality is stronger.Calcination atmosphere in roasting cooling system of the present invention needs optional oxidisability, neutrality, reducing atmosphere according to roasted ore, wider than the material choice object of existing magnetizing roasting system, available lower energy consumption and investment, complete magnetizing roasting and the cooling of the iron ores such as superfine powder spathic iron ore, rhombohedral iron ore, limonite, pyrrhosiderite and pyrite, improve the rate of recovery and the grade in weak magnetic ore deposit.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (8)
1. powder magnetizing roasting and cooling system, it is characterized in that: comprise feeding machine (10), the discharge port of described feeding machine (10) is connected with the suspension preheating system be made up of 2 ~ 5 grades of suspended preheaters, the exhanst gas outlet of described first step suspended preheater (1) is connected with induced draft fan (9), and described induced draft fan (9) is connected with dust-precipitator (8); Described suspension preheating system connects magnetization roasting furnace (4) and cooling system (5) respectively, and the gas approach of described magnetization roasting furnace (4) is connected with described hotblast stove (6) exhanst gas outlet; The gas approach place of described magnetization roasting furnace (4) is provided with burner (7).
2. powder magnetizing roasting as claimed in claim 1 and cooling system, it is characterized in that: described suspension preheating system is made up of three grades of suspended preheaters, it comprises first step suspended preheater (1), second stage suspended preheater (2) and third stage suspended preheater (3), the discharge port of wherein said feeding machine (10) is connected with the feeding mouth of first stage suspension preheater (1), and the exhanst gas outlet of described first step suspended preheater (1) is connected with induced draft fan (9); The discharge port of described first step suspended preheater (1) is connected with the gas approach of second stage suspended preheater (2), and second stage suspended preheater (2) discharge port is connected with magnetization roasting furnace (4); The exhanst gas outlet of described magnetization roasting furnace (4) is connected with third stage suspended preheater (3) opening for feed; The gas approach of described second stage suspended preheater (2) is connected with the exhanst gas outlet of third stage suspended preheater (3), and the discharge port of described third stage suspended preheater (3) is connected with cooling system (5).
3. powder magnetizing roasting as claimed in claim 2 and cooling system, is characterized in that: the pipeline that the discharge port of described first step suspended preheater (1) is connected with the gas approach of second stage suspended preheater (2) and the pipeline that second stage suspended preheater (2) discharge port is connected with magnetization roasting furnace (4) are equipped with air valve.
4. powder magnetizing roasting as claimed in claim 2 or claim 3 and cooling system, it is characterized in that: described cooling system (5) comprises air cooling system and water-cooling system, the discharge port of wherein said third stage suspended preheater (3) is connected with T-valve (13), a discharging end water receiving cooling system of described T-valve (13), gives a dinner for a visitor from afar cooling system in another lower end.
5. the powder magnetizing roasting as described in claim 1 or 2 or 3 and cooling system, it is characterized in that: wherein temperature element and pressure element are housed respectively, to magnetizing roasting real-time process monitoring in every grade of suspended preheater, magnetization roasting furnace (4), hotblast stove (6), dust-precipitator (8) and cooling system (5).
6. the powder magnetizing roasting as described in claim 1 or 2 or 3 and cooling system, it is characterized in that: described magnetization roasting furnace (4) is by spiral blast pipe, vertical blast pipe, opening for feed, reaction chamber, escape pipe and burner (7) composition, wherein reaction chamber is made up of right cylinder and bottom, described opening for feed is placed in by rounding frustum, described spiral blast pipe tangentially enters the lower end of the upper rounding frustum of magnetization roasting furnace (4), described vertical blast pipe is directly connected with the upper rounding frustum lower end of magnetization roasting furnace (4), described burner (7) is loaded on the lower end of magnetization roasting furnace.
7. powder magnetizing roasting as claimed in claim 6 and cooling system, is characterized in that: wherein said spiral blast pipe is equipped with flow control valve.
8. the powder magnetizing roasting as described in claim 1 or 2 or 3 or 7 and cooling system, is characterized in that: wherein every grade of suspended preheater is the one in cyclone preheater, shaft preheater or combination preheater; Described hotblast stove (6) blast is adjustable.
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| CN201410597539.XA CN104357651A (en) | 2014-10-31 | 2014-10-31 | Powder magnetization roasting and cooling system |
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| CN105132670A (en) * | 2015-09-15 | 2015-12-09 | 东北大学 | Classifying suspension roasting device for complex refractory iron ore |
| CN107460307A (en) * | 2017-07-19 | 2017-12-12 | 东北大学 | A kind of high-iron bauxite suspension roasting utilization system and method |
| CN107523685A (en) * | 2017-07-19 | 2017-12-29 | 东北大学 | A kind of suspension roasting utilization system and method containing Ferromanganese Ore |
| CN107523684A (en) * | 2017-07-19 | 2017-12-29 | 东北大学 | A kind of suspension roasting ferromanganese method for separating and processing containing Ferromanganese Ore |
| CN107630139A (en) * | 2017-11-20 | 2018-01-26 | 徐州贝克福尔节能环保技术有限公司 | A kind of iron ore fluidization suspension preheating prereduction device and method |
| CN108866319A (en) * | 2018-08-17 | 2018-11-23 | 北京中科领向环保研究院有限公司 | A kind of system and method enhancing steel slag RO phase magnetism |
| CN111635991A (en) * | 2020-06-03 | 2020-09-08 | 东北大学 | Device for regulating magnetism and intensively sorting roasted materials by air cooling and recovering latent heat |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105132670A (en) * | 2015-09-15 | 2015-12-09 | 东北大学 | Classifying suspension roasting device for complex refractory iron ore |
| CN105132670B (en) * | 2015-09-15 | 2017-03-22 | 东北大学 | Classifying suspension roasting device for complex refractory iron ore |
| CN107460307A (en) * | 2017-07-19 | 2017-12-12 | 东北大学 | A kind of high-iron bauxite suspension roasting utilization system and method |
| CN107523685A (en) * | 2017-07-19 | 2017-12-29 | 东北大学 | A kind of suspension roasting utilization system and method containing Ferromanganese Ore |
| CN107523684A (en) * | 2017-07-19 | 2017-12-29 | 东北大学 | A kind of suspension roasting ferromanganese method for separating and processing containing Ferromanganese Ore |
| CN107630139A (en) * | 2017-11-20 | 2018-01-26 | 徐州贝克福尔节能环保技术有限公司 | A kind of iron ore fluidization suspension preheating prereduction device and method |
| CN108866319A (en) * | 2018-08-17 | 2018-11-23 | 北京中科领向环保研究院有限公司 | A kind of system and method enhancing steel slag RO phase magnetism |
| CN111635991A (en) * | 2020-06-03 | 2020-09-08 | 东北大学 | Device for regulating magnetism and intensively sorting roasted materials by air cooling and recovering latent heat |
| CN111635991B (en) * | 2020-06-03 | 2021-08-31 | 东北大学 | Device for regulating magnetism and intensively sorting roasted materials by air cooling and recovering latent heat |
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Application publication date: 20150218 |