CN100552357C - Iron sulfide mineral powder desulphurizing roasting and nitrogen quenching multifunctional microwave smelting apparatus - Google Patents
Iron sulfide mineral powder desulphurizing roasting and nitrogen quenching multifunctional microwave smelting apparatus Download PDFInfo
- Publication number
- CN100552357C CN100552357C CNB2007101447313A CN200710144731A CN100552357C CN 100552357 C CN100552357 C CN 100552357C CN B2007101447313 A CNB2007101447313 A CN B2007101447313A CN 200710144731 A CN200710144731 A CN 200710144731A CN 100552357 C CN100552357 C CN 100552357C
- Authority
- CN
- China
- Prior art keywords
- microwave
- continuous
- puddler
- gas
- helical form
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
Sulfide mineral powder desulphurizing roasting and nitrogen quenching multifunctional microwave smelting apparatus belong to metallurgy equipment of mining; Main frame is by the structure frame, microwave takes place and control device, infrared temperature measurement apparatus, automaton, the continuous feed bucket, the continuous haul puddler of helical form, quartzy pyroreaction pipe, feeder, exhaust apparatus, segmentation elastomeric isolation device, gas is collected condensing unit, liquid feed device, the water and gas dual-purpose cooling device, power synchronous variable-speed transmission device, outlet valve, form Deng pentagon microwave firing box installing rack, the present invention is rapidly heated powdered iron sulfide under microwave action, when reaching uniform temperature, sulphur atom in the iron sulfide combines formation " sulphur-oxygen vapour " rapidly with oxygen, all be condensed and collect utilization, reaction back stays the powdery solid in main frame be exactly the elemental metals iron powder, and heated by microwave is carried out nitrogen treatment to iron powder and made it become the special-purpose base-material of the required high-performance of powder metallurgy again; The present invention is of many uses.
Description
Technical field
The application technology, microwave that the present invention relates to microwave carried out technology, technology and the equipment and technology of desulphurizing roasting and nitrogen treatment, particularly a kind of multifunctional microwave smelting apparatus that can satisfy industrialized mass production to the sulfide mineral powder of iron.
Background technology
The sulfide of iron has various ways, and common has: FeS, FeS
2, Fe
3S
4, Fe
0.885S and Fe
0.98S etc.; The refinement of the metallic iron material of these iron sulfides and the extraction of sulphur-containing substance, under the situation of present mass industrialized production, use stove, kiln usually and extract as the traditional heating mode of combustion medium with coal or coke, its heating-up temperature is usually between 780 ℃～920 ℃, and with the desulphurizing roasting of this mode of heating, directly consequence is to produce bigger air and environmental pollution, and desulfurization time is long, and operating efficiency is lower, and energy utilization rate is not high, and the thermal efficiency is low.In addition, the breeze desulphurizing roasting technology of traditional approach is separated with the nitriding process of iron powder and is carried out separately separately, can not carry out simultaneously.Up to the present, conventional art can't be accomplished this twice technology is incorporated in the equipment and finish simultaneously.
Because the iron sulfide mineral powder material is a kind of very good little medium that is absorbed, it is again good polar material, it is under microwave action, its microwave energy polarizes to the iron sulfide mineral powder material, make polarized polarity iron sulfide mineral powder material under the alternation microwave electromagnetic waves effect of high frequency, produce the strenuous exercise of the higher-order of oscillation, cause the mutual frictional dissipation of these polar molecules, make microwave electromagnetic can be converted into heat energy rapidly, that is to say that microwave heating principle and process are exactly dielectric material own loss electromagnetic energy and produce the process of heat.By the rapid heating of microwave to iron sulfide mineral powder, make the oxygen atom that contains in element sulphur in the iron sulfide mineral powder and the air generation " sulphur---oxygen vapour " that reacts, gas is reclaimed by the water-cooled coalescence immediately, and desulfurization has just been finished.Because microwave has the effect that promotes chemical reaction, so, comparable low 60 ℃～100 ℃ of the required desulfurization temperature of traditional heating method of using of temperature that practical sulphur removal is required.
No longer oxidized in order to make through the particulate iron powder of desulphurizing roasting, can be widely used in field of powder metallurgy, need iron powder is carried out nitrogen treatment, be about to iron powder under the heating using microwave state, charge into high-purity nitrogen, the surface that makes ferrous powder granules is by the nitrogen passivation, its heating and temperature control is between 810 ℃～860 ℃, like this, iron powder just can become the base-material of high performance powder used in metallurgy again through fine grinding and magnetic separation.
Involved in the present invention is a kind of multi-functional little by smelting equipment, be a kind of microwave smelting apparatus that the nitriding process of the desulphurizing roasting technology of iron sulfide mineral powder and iron powder can be united two into one, and can be applied to the deoxidation and reduction technology of ferriferous oxide breeze and the synchronous nitriding process of iron powder equally.In enormous quantities, industrial continuous production requirement are satisfied in its energy continuous feed, discharging continuously.This combination process and pairing multifunctional microwave smelting apparatus are blank in the present domestic steel and iron industry.Therefore, technology content of the present invention and important meaning are just self-evident.
Summary of the invention
At the existing all deficiencies of conventional art, the purpose of this invention is to provide a kind of can shortened process, simplify working process, do not have gaseous contamination, energy-efficient, small investment, automatic controlling level height, can realize the rapid batch suitability for industrialized production and be utilized little by the multifunctional microwave smelting apparatus that iron sulfide mineral powder heating principle is carried out the product global design.
Another object of the present invention is to have determined the synchronization implementation method of the nitriding process of iron sulfide mineral powder desulphurizing roasting technology and iron powder under microwave action and a kind of multifunctional microwave smelting apparatus that can implement these two combination process simultaneously is provided.
The present invention adopts following technical scheme: a kind of desulphurizing roasting of iron sulfide mineral powder and the multifunctional microwave smelting apparatus of nitrogen treatment,
Its architectural feature and operating characteristic are described as follows:
1. be the box length direction of cuboid along main frame, three working chambers that flatly are being arranged in parallel respectively have one group of continuous haul puddler of helical form (6) in each chamber, and by upper, middle and lower three stacked add horizontally disposed.Be respectively equipped with also in upper strata and intermediate layer that microwave takes place and control device (2), infrared temperature measurement apparatus (3), quartzy pyroreaction pipe (7), feeder (8), exhaust apparatus (9), gas collection condensing unit (11), liquid feed device (12) and etc. pentagon microwave firing box installing rack (16).The continuous haul puddler of helical form in upper strata and intermediate layer (6) all is enclosed within the quartzy pyroreaction pipe (7), can do the variable speed reverse rotation respectively; Microwave take place and control device (2) in microwave firing box and infrared temperature measurement apparatus (3) be installed in etc. on the pentagon microwave firing box installing rack (16).
2. the outside of the set continuous haul puddler of helical form (6) is a stainless steel metal plate circular cylinder body in lower floor, the cooling red copper tube of water and gas dual-purpose cooling device (13) is set around the cylindrical shell appearance, segmentation is provided with, and a plurality of water inlets (gas) mouth and water outlet (gas) mouth are arranged.Have discharge opening at the continuous haul puddler of helical form (6) outlet end, a segmentation elastomeric isolation device (10) and outlet valve (15) are installed.On the upper strata, the every place in two-layer separated place and lower floor exit of intermediate layer and lower floor is provided with a segmentation elastomeric isolation device (10), in continuous feed bucket (5) bottom segmentation elastomeric isolation device (10) is set; Be provided with continuous feed bucket (5), power synchronous variable-speed transmission device (14) on structure frame (1) top; Connect by cable between the automaton (4) of main frame and removable installation.
3. charging place of the continuous haul puddler of the helical form in upper strata and intermediate layer (6) and discharge place are provided with liquid feed device (12), feeder (8), exhaust apparatus (9) and gas respectively and collect condensing unit (11), permission is provided with two feeders (8) and exhaust apparatus (9) at most at same place, and can use simultaneously.Gas collection condensing unit (11) is arranged on main frame and also is connected with main frame with pipeline outward.
4. the end in structure frame (1) is provided with power synchronous variable-speed transmission device (14), for the continuous haul puddler of helical form (6), quartzy pyroreaction pipe (7) provide feeding, stirring and rotary power, can realize the stepless speed regulation in the certain limit.
5. as because main frame main body structure when designing according to actual condition, in the time of need satisfying certain length, structure frame (1), the continuous haul puddler of helical form (6), quartzy pyroreaction pipe (7), etc. pentagon microwave firing box installing rack (16) be made into the segmentation form, sectional dismounting and segmented assembly.Require not need the iron powder after desulfurization or reduction roasting is made nitrogen treatment as product and operation, then can be with the intermediate layer cancellation of equipment, its corresponding affiliated facility is cancellation thereupon also.
6. the iron sulfide mineral powder material arrives outlet until processed finishing after the access arrangement import, is " S " shape attitude of advancing in three working chambers that are three layers of layout of material in equipment, and successively.Common equipment design be three continuous haul puddlers of helical form (6) be constant speed rotation (direction of rotation then is that levels is consistent, the intermediate layer is then in contrast), but the rotating speed of lower floor's helical stir bar is omited faster than other two helical stir bars.After the iron sulfide mineral powder material is accompanied by air one and enters the upper strata working chamber, sent in the quartzy pyroreaction pipe (7) by the continuous haul puddler of helical form (6) immediately and continue to be stirred and carry forward, this moment, material under microwave action began to heat up, when being warmed up to specified temp, iron sulfide mineral powder begins desulfurization, when material was delivered to the end of the continuous haul puddler of upper strata helical form (6), desulfurization was finished.The iron powder that then is desulfurized falls into the intermediate layer and does oppositely to carry, also sent in the quartzy pyroreaction pipe (7) of concentric installation by the continuous haul puddler of the helical form in intermediate layer (6), under the nitriding temperature environment that under microwave action, is reached, with the high-purity nitrogen generation passivation that adds in the working chamber, when iron powder is reversed the end that is transported to the continuous haul puddler of intermediate layer helical form (6), nitridation process finishes, drop into lower floor at last and by the continuous haul puddler of helical form (6) the nitrogenize iron powder is carried and cooling thereupon to the equipment exit, iron powder is sent outside the machine when being cooled to about 70 ℃ of left and right sides.
Description of drawings
Fig. 1 is a multifunctional microwave smelting apparatus Facad structure cross-sectional schematic
Fig. 2 is a multifunctional microwave smelting apparatus end face structure cross-sectional schematic
Fig. 3 is a multifunctional microwave smelting apparatus system works schematic diagram
The specific embodiment
1. upper strata desulphurizing roasting embodiment: granularity is reached 100 orders～200 purpose iron sulfide mineral powders directly deliver in the set continuous feed bucket (5) of present device import department with belt conveyor according to the working flow of prior setting, after in bucket, accumulating some weight slightly, the set segmentation elastomeric isolation device (10) in its underpart will be opened voluntarily, allow material pass through continuously, enter in the upper strata working chamber of present device, the continuous haul puddler of the helical form of at the uniform velocity being rotated (6) is transported in the quartzy pyroreaction pipe (7) of reverse rotation by heating using microwave forward and begins to heat up immediately, inlet end at quartzy pyroreaction pipe (7), can inwardly be pressed into the air of certain flow with feeder (8) according to practical working situation, to replenish the oxygen content in the working chamber.Material is warming up to the required temperature of the desulphurization reaction (heating-up temperature of setting by heating using microwave rapidly in the process of before sending while stirring, about about 700 ℃～820 ℃) time, the airborne oxygen atom generation " sulphur---oxygen vapour " that reacts in element sulphur in the iron sulfide mineral powder and the quartzy pyroreaction pipe (7), gas is deflated device (9) sucking-off main frame immediately and enters gas outward and collect condensing unit (11) back that is condensed and reclaim, and desulfurization process has just been finished.
Key work in the upper chamber is: 1. constantly enter material in the working chamber and can only allow it be filled in 60% of last space in the quartzy pyroreaction pipe (7) (be the built-in helical stir of deduction space that bar accounts for after pipe internal volume) at most, its complementary space is taken up space by gas; 2. control the start or stop of microwave generation and control device (2) again or regulate its microwave transmitting power after the temperature in the quartz ampoule is measured by infrared temperature measurement apparatus (3), its desulfurization reaction temperature is remained in the only temperature range; 3. the gas supply flow of import department and pressure are looked actual state and are adjusted, and are supplied as the air feed principle in full amount with what guarantee air; 4. quartz ampoule is interior because the high-temperature gas after responding exists, and its pressure inside often keeps pressure-fired (greater than the outer atmospheric pressure of machine); 5. exhaust apparatus (9) is installed in the end of the continuous haul puddler of helical form (6), extraction flow needs to be complementary with gas supply flow, and adjusts to some extent along with factor such as the speed of the formation speed of the height of the size of gas supply flow, reaction temperature, reacting gas.
The set visual need of work of feeder (8) in the upper chamber (can be by the metallic compound of microwave treatment as handling other) infeeds other gas, as hydrogen, argon gas, nitrogen or carbon dioxide etc., also can select to close air supply opening.
The visual need of work of liquid feed device (12) (as refining high-purity iron powder) set in the upper chamber infeeds liquefied ammonia or other liquid, can infeed clear water during cleaning equipment, also can select to close supply opening.
2. intermediate layer high temperature nitrogen passivation embodiment: in the working chamber of upper strata by the straight iron powder after the desulfurization fully, when being pushed to its end by the continuous haul puddler of the helical form on upper strata (6), iron powder just falls along the feed opening that is in the end, open the set segmentation elastomeric isolation device (10) in feed opening bottom immediately voluntarily, fall into again in the nitrogen treatment working chamber in intermediate layer, and the continuous haul puddler of the person's of being rotated intermediate layer helical form (6) stirs while pushing towards the rightabout with the upper materials motion, in iron powder is fed in the quartzy pyroreaction pipe (7) of reverse rotation immediately by heating using microwave and begin to heat up, inlet end at quartzy pyroreaction pipe (7), there is feeder (8) in the chamber, to be pressed into the high-purity nitrogen of certain flow, required with the nitrogenize that is used for iron powder, drive air or other gas simultaneously, also the same with the upper strata, intracavity gas pressure often keeps pressure-fired.Guarantee to be full of nitrogen in the working chamber of whole intermediate layer, the nitrogen treatment that makes iron powder be carried out in nitrogen atmosphere is able to smoothly.In being full of the work atmosphere of nitrogen, iron powder will reach between 810 ℃～860 ℃ by the nitrogen passivation in temperature, and so far, the nitrogen treatment operation of iron powder is finished.Unnecessary nitrogen and other gases then can be discharged or collect to layer exhaust apparatus of working chamber terminal (9) that mediate, and have the function of adjusting cavity pressure.
Key work in the chamber, intermediate layer is: 1. the intermediate layer cavity pressure should be consistent substantially with the upper chamber internal pressure; 2. because the iron powder of upper strata input is the condition of high temperature, behind the intermediate layer as long as just can satisfy the needed temperature of iron powder nitrogenize with heating using microwave slightly, therefore, the microwave in intermediate layer takes place and the configuration quantity and the power of control device (2) can decrease, and can reduce cost significantly;
The set visual need of work of feeder (8) in the chamber, intermediate layer (can be by the metallic compound of microwave treatment as handling other) infeeds other gas, as hydrogen, argon gas, nitrogen or carbon dioxide etc., also can select to close air supply opening.
The visual need of work of liquid feed device (12) (as refining high-purity iron powder) set in the chamber, intermediate layer infeeds liquefied ammonia or other liquid, can infeed clear water during cleaning equipment, also can select to close supply opening.
3. lower floor's iron powder material cools off embodiment: the straight iron powder in the working chamber of intermediate layer behind the complete nitrogen treatment of quilt, when being pushed to its end by the continuous haul puddler of the helical form in intermediate layer (6), iron powder just falls along the feed opening that is in the end, open the set segmentation elastomeric isolation device (10) in feed opening bottom immediately voluntarily, fall into again in the cooling processing working chamber of lower floor, and the continuous haul puddler of the lower floor's helical form that is being rotated (6) is towards stirring while pushing with the rightabout (identical with the material movement direction on upper strata) of intermediate layer material movement, owing to quartzy pyroreaction pipe (7) is not set in the outside of the continuous haul puddler of the helical form of lower floor (6), but directly be sleeved on the outside of the continuous haul puddler of helical form (6), and wrap up its whole length with the made circular cylinder body of stainless steel metal plate.The disposed outside that is fixed on the stainless steel metal plate circular cylinder body on the structure frame (1) the cooling red copper tube group of water and gas dual-purpose cooling device (13), according to actual conditions, should be provided with many group cooling tube groups, a plurality of water inlets (gas) mouth and water outlet (gas) mouth are arranged, make cooling effect reach designing requirement.The iron powder material pushes when being transported to lower floor's discharging opening under the situation of cooling off while stirring on the limit, the set segmentation elastomeric isolation device (10) in discharging opening bottom is just opened voluntarily, through being cooled to about about 70 ℃ iron powder material just by outside outlet valve (15) the discharge machine.
Key work in the lower floor chamber is: 1. the continuous haul puddler of lower floor's helical form (6) is that (direction of rotation then is that levels is consistent in the constant speed rotation with other two helical stir bars generally, the intermediate layer is then in contrast), but also can be when equipment designs with the rotation rotating speed of lower floor's helical stir bar slightly faster than other two helical stir bars; 2. the common water of cooling device is as cooling medium, and recycles, and reduces the loss and the waste of water resource; 3. outlet valve (15) is with manually controlling its start or stop, be in opening under equipment is in working condition, having only under the long-term obsolete situation of equipment and just close.In addition, in the time will doing cleaning equipment work with three working chambers that clear water is poured in entire equipment, outlet valve (15) must be closed; 4. lower floor's working chamber does not have microwave generation and control device (2) outward, and it is a cooling, tapping channel, and the iron powder material is that the limit pushes a process of cooling while stirring at this active section, does not have any other chemical reaction.
4. the continuous haul puddlers of being arranged in the upper, middle and lower-ranking of three helical forms (6) move simultaneously, stop simultaneously, and rotating speed also can be regulated and control within the specific limits; In the course of work of continuous material handling, temperature, gas in the working chamber of upper, middle and lower-ranking are relative closures, do not circulate mutually.This mainly is owing to segmentation elastomeric isolation device (10) is arranged in action.This just makes that it can accomplish not dried mutually scratching each other when different chemical changes took place in this inherence, three chambeies.
Claims (7)
1. the desulphurizing roasting of thinization of an iron thing breeze and the multifunctional microwave smelting apparatus of nitrogen treatment, the main frame profile is the box moulding of cuboid, multifunctional microwave smelting apparatus comprises structure frame (1), microwave takes place and control device (2), infrared temperature measurement apparatus (3), automaton (4), continuous feed bucket (5), the continuous haul puddler of helical form (6), quartzy pyroreaction pipe (7), feeder (8), exhaust apparatus (9), segmentation elastomeric isolation device (10), gas is collected condensing unit (11), liquid feed device (12), water and gas dual-purpose cooling device (13), power synchronous variable-speed transmission device (14), outlet valve (15), Deng pentagon microwave firing box installing rack (16), it is characterized in that by three groups of continuous haul puddlers of helical form (6) by last, middle, down three stacked add horizontally disposed, and more than, middle, following three layers are formed centrally three separate working cavities and material conveying pipe in being respectively, and also be respectively equipped with microwave and take place and control device (2) in upper strata and intermediate layer, infrared temperature measurement apparatus (3), quartzy pyroreaction pipe (7), feeder (8), exhaust apparatus (9), gas is collected condensing unit (11), liquid feed device (12) and etc. pentagon microwave firing box installing rack (16); Be provided with water and gas dual-purpose cooling device (13), outlet valve (15) in lower floor; On the upper strata, the every place in two-layer separated place and lower floor exit of intermediate layer and lower floor is provided with a segmentation elastomeric isolation device (10), in continuous feed bucket (5) bottom segmentation elastomeric isolation device (10) is set; Be provided with continuous feed bucket (5), power synchronous variable-speed transmission device (14) on structure frame (1) top; Connect by cable between the automaton (4) of main frame and removable installation.
2. multifunctional microwave smelting apparatus according to claim 1, it is characterized in that: the set continuous haul puddler of helical form (6) all is enclosed within the quartzy pyroreaction pipe (7) in upper strata and intermediate layer, and these continuous haul puddlers of two helical forms (6) are done the variable speed reverse rotation respectively with the quartzy pyroreaction pipe (7) of two overcoats; The method that is provided with multistage when continuous haul puddler of the helical form that each layer is set (6) and quartzy pyroreaction pipe (7) is arranged, to satisfy the length-specific that requires when equipment designs.
3. multifunctional microwave smelting apparatus according to claim 1, it is characterized in that: the outside of the set continuous haul puddler of helical form (6) is a stainless steel metal plate circular cylinder body in lower floor, the cooling red copper tube of water and gas dual-purpose cooling device (13) is set around the cylindrical shell appearance, and setting is twined in segmentation, a plurality of water inlet/gas ports, water outlet/gas port are arranged, have discharge opening at the continuous haul puddler of helical form (6) outlet end, a segmentation elastomeric isolation device (10) and outlet valve (15) are installed.
4. multifunctional microwave smelting apparatus according to claim 1, it is characterized in that: charging place of the continuous haul puddler of the helical form in upper strata and intermediate layer (6) and discharge place are provided with liquid feed device (12), feeder (8), exhaust apparatus (9) and gas respectively and collect condensing unit (11), two feeders (8) and exhaust apparatus (9) are set at most at same place, and use simultaneously, gas collection condensing unit (11) is arranged on main frame and also is connected with main frame with pipeline outward.
5. multifunctional microwave smelting apparatus according to claim 1 is characterized in that: microwave take place and control device (2) in microwave firing box and infrared temperature measurement apparatus (3) be installed in etc. on the pentagon microwave firing box installing rack (16).
6. multifunctional microwave smelting apparatus according to claim 1, it is characterized in that: the end in structure frame (1) is provided with power synchronous variable-speed transmission device (14), for the continuous haul puddler of helical form (6), quartzy pyroreaction pipe (7) provide the power of feeding, stirring and rotation, can realize the stepless speed regulation in the certain limit.
7. multifunctional microwave smelting apparatus according to claim 1, it is characterized in that: as because main frame main body structure when designing according to actual condition, in the time of need satisfying certain length, structure frame (1), the continuous haul puddler of helical form (6), quartzy pyroreaction pipe (7), etc. pentagon microwave firing box installing rack (16) be made into the segmentation form, be convenient to segmented assembly and segmentation dismounting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101447313A CN100552357C (en) | 2007-12-03 | 2007-12-03 | Iron sulfide mineral powder desulphurizing roasting and nitrogen quenching multifunctional microwave smelting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101447313A CN100552357C (en) | 2007-12-03 | 2007-12-03 | Iron sulfide mineral powder desulphurizing roasting and nitrogen quenching multifunctional microwave smelting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101178286A CN101178286A (en) | 2008-05-14 |
| CN100552357C true CN100552357C (en) | 2009-10-21 |
Family
ID=39404632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101447313A Expired - Fee Related CN100552357C (en) | 2007-12-03 | 2007-12-03 | Iron sulfide mineral powder desulphurizing roasting and nitrogen quenching multifunctional microwave smelting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100552357C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689008A (en) * | 2011-03-23 | 2012-09-26 | 杰富意钢铁株式会社 | Method of finish heat treatment of iron powder and apparatus for finish heat treatment |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180649B (en) * | 2014-07-08 | 2016-02-24 | 昆明理工大学 | A kind of microwave dynamic high temperature continuous calcining equipment |
| CN104215066B (en) * | 2014-09-04 | 2015-12-09 | 郴州杉杉新材料有限公司 | A kind of horizontal tube carbonaceous intermediate apparatus for continous heat treatment |
| CN104792173A (en) * | 2015-04-03 | 2015-07-22 | 张辞军 | Horizontal multi-tube outside heating manganese dioxide reduction roasting furnace |
| CN108658061A (en) * | 2018-08-01 | 2018-10-16 | 哈尔滨工业大学 | A kind of reaction unit preparing graphene powder for combustion synthesis method |
| CN113617801A (en) * | 2021-08-11 | 2021-11-09 | 湖南行者环保科技有限公司 | Method for microwave industrial treatment of sulfur-containing and arsenic-containing material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565670A (en) * | 1982-05-06 | 1986-01-21 | Doryokuro Kakunenryo Kaihatsu Jigyodan | Heat treating apparatus using microwaves |
-
2007
- 2007-12-03 CN CNB2007101447313A patent/CN100552357C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565670A (en) * | 1982-05-06 | 1986-01-21 | Doryokuro Kakunenryo Kaihatsu Jigyodan | Heat treating apparatus using microwaves |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689008A (en) * | 2011-03-23 | 2012-09-26 | 杰富意钢铁株式会社 | Method of finish heat treatment of iron powder and apparatus for finish heat treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101178286A (en) | 2008-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100552357C (en) | Iron sulfide mineral powder desulphurizing roasting and nitrogen quenching multifunctional microwave smelting apparatus | |
| CN101956037B (en) | Method and device for indirect heating type reduction iron making | |
| CN101775488B (en) | Method for conveying thermal-state rotary furnace metallized pellets in anharmonic vibration mode | |
| CN103822464A (en) | Industrial continuous high-temperature microwave calcining furnace for mineral granules and powder | |
| CN102304600A (en) | Rotary hearth furnace adopting 2-3-section distribution and discharge mode for direct reduction production | |
| CN110000396A (en) | A kind of reduction apparatus and method of fine iron breeze production reduced iron powder | |
| GB1588271A (en) | Method of and apparatus for recovering heat from molten slag | |
| CN104357655A (en) | Continuous ore reduction and hot-charging steelmaking device | |
| CN104152620B (en) | For the method and apparatus of powdered iron ore direct-reduction | |
| CN103069023A (en) | Method and apparatus for recovering metal from electric furnace dust | |
| CN101922861A (en) | Smelting furnace | |
| CN101941807A (en) | Process flow and equipment for producing cement clinker by high-temperature molten-state slag | |
| CN102409126B (en) | Integrated reduction ironmaking furnace and integrated reduction ironmaking process | |
| CN201677036U (en) | Device for performing secondary hydrogen reduction to powdered iron | |
| CN103305649B (en) | External heated shaft furnace coal-based direct reduction iron production technique and device | |
| CN201289293Y (en) | Multifunctional microwave smelting equipment for desulphurizing roasting and nitrogen treatment of iron sulfide mineral powder | |
| US2307459A (en) | Metallurgical process | |
| CN104986749B (en) | My(CxN1-x) powder the continuous preparation method of push type dynamic and sintering equipment | |
| FI58945C (en) | SAETT ATT GENOMFOERA ENDOTERMA METALLURGICAL REDUCTION PROCESSER WITH HJAELP AV EN KONTINUERLIGT ARBETANDE MEKANISK UGN | |
| RU2285048C2 (en) | Method of production of iron-nickel alloys and nickel from oxide materials and plant for realization of this method | |
| CN113587653B (en) | Vacuum furnace for continuous production of silicon oxide powder scraping type and method for continuous production of silicon oxide | |
| US2404650A (en) | Processing kiln | |
| CN101266099B (en) | Electromagnetic induction calcinations continuous operation process and its dedicated electromagnetic induction calcining equipment | |
| CN104178593B (en) | Iron Ore Powder direct reduction process and equipment | |
| CN110055360B (en) | Method for adding DRI into blast furnace molten iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Wu Xinbin Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Wu Xinbin Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20111203 |