CN201621947U - Middle-frequency high-temperature roasting furnace - Google Patents
Middle-frequency high-temperature roasting furnace Download PDFInfo
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- CN201621947U CN201621947U CN2009200944972U CN200920094497U CN201621947U CN 201621947 U CN201621947 U CN 201621947U CN 2009200944972 U CN2009200944972 U CN 2009200944972U CN 200920094497 U CN200920094497 U CN 200920094497U CN 201621947 U CN201621947 U CN 201621947U
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Abstract
The utility model relates to a middle-frequency high-temperature roasting furnace which is mainly used for the reduction roasting during the extraction process of laterite nickel, cobalt and iron, which is characterized in that: a sensor, a furnace liner and a heating body are sequentially installed inside an aluminum furnace shell, the upper part of a furnace body is provided with a cement asbestos board, the upper part of the cement asbestos board is provided with furnace mouth bricks and an aluminum furnace cover plate, the lower part is provided with a water outlet, the lower end is provided with a heating ring, the bottom part of the furnace body is provided with a cement asbestos board, and the middle part of the furnace body is provided with a tilting reducer which is convenient for the tilting smelting. By adopting the middle-frequency heating, increasing the diameter-height ratio of the furnace body and adopting the magnetic conducting heating body comprising the graphite material, compared with the roasting of the present rotary kiln, the middle-frequency high-temperature roasting furnace has the advantages of rapid heating, high efficiency, easy operation, no ring, short flow and easy control of the state of the product. Being used as a crucial device for the two-stage roasting, the market prospect is promising, the popularization is easy, the development potential is vast, and positive influence can be produced on the development and utilization of the laterite nickel mineral resource.
Description
Technical field:
The utility model relates to a kind of non-ferrous metal metallurgy equipment, is mainly used in the reduction roasting in laterite nickel, cobalt, the iron leaching process.
Background technology:
Whole world nickel reserves are about 1.6 hundred million tons, and wherein the vulcanization type nickel minerals only accounts for 28% of whole reserves, and laterite-type nickel ore accounts for 72%, and its amount of metal is about 1.15 hundred million tons.Since the vulcanization type nickel minerals have of high grade, impurity is few, characteristics such as Yi Xuanye.The nickel resources 58% that is utilized at present is from these type of mineral.Along with increasing of sulfide mineral yield and reserves reduce fast, the development and use of laterite-type nickel ore have become global focus.But because the most grades of laterite-type nickel ore are lower, difficulty is selected smelting, the rate of recovery is low, smelting cost is high.Particularly existing pyrometallurgical smelting process, what many employings were traditional is the rotary kiln reduction roasting technology of heating source with coal dust, heavy oil, coal gas, natural gas, under hot conditions, reduced material ring formation (on the material Ning Jie Zai Kiln wall) very easily in rotary kiln, or balling bulk.Both influence reduction effect, can not guarantee ordinary production again.The huge rotary kiln body of this process equipment just reaches more than 100 meters, and needs multiple spot control.If carry out low temperature sintering (below 900 ℃), nickel recovery only can reach below 70%, has greatly wasted nickel resources.Become a big bottleneck of pyrometallurgical smelting laterite technology.Seriously restricted the development and utilization of laterite resource.Defectives such as existing equipment exists all that long flow path, control point are many, the easy ring formation of material, balling, sintering period are long.
Summary of the invention:
The purpose of this utility model just is at above-mentioned the deficiencies in the prior art, and a kind of intermediate frequency high-temperature roasting stove is provided.
The purpose of this utility model is achieved through the following technical solutions:
Intermediate frequency high-temperature roasting stove adopts intermediate frequency inductor as the roaster thermal source, be to be set with intermediate frequency inductor 4 successively by ecto-entad in the aluminium furnace shell 3, accomplish fluently 5mm-10mm furnace lining 5 in the intermediate frequency inductor 4, be set with heater 6 center in kiln in the furnace lining 5 diameter 50-300MM is housed, the graphite electrode of length 300-5000MM, with the central electrode roasting of generating heat, upper of furnace body is provided with uralite 2, the top of uralite 2 is equipped with fire door brick 1 and aluminium stove cover plate 8 from bottom to up successively, the bottom is provided with delivery port 9, the lower end is provided with heating ring 10, the body of heater bottom is a uralite 7, and the bottom of furnace body delivery port is provided with damping control feeding device, and the body of heater middle part is provided with the reductor tiling arrangement, the body of heater middle part is provided with the support turning cylinder, is convenient to the tilting roasting.Heater 6 is for containing the magnetic conduction tubular heater of graphite, and heater 6 adopts the more piece seam to connect or is one.Bottom of furnace body is provided with single hole or porous blowing delivery port 9, and delivery port diameter 5-500mm, nozzle brick adopt graphite or refractory material to make, and refractoriness is more than 1800 ℃.Intermediate frequency inductor 4 blade diameter length ratio 1: 2-10.Furnace lining 5 one-shot formings will have the 10-30MM gap between furnace lining 5 and heater 6, the mouth of a river 9 and the heating ring 10, and the refractory powder filling is used in the centre, and the bottom is provided with jig, are beneficial to the replacing of heater 6, the mouth of a river 9, heating ring 10.Heating ring 10 is by metal or nonmetal making, and the delivery port place should be applicable to coal gas, natural gas or acetylene gas heating.Tilting roaster inclination angle 5-90 ℃.
Beneficial effect: the utility model adopts heating in medium frequency, contains the magnetic conducting and heating body of graphite material by strengthening the body of heater blade diameter length ratio, adopting, and sets out the mouth of a river, heating ring.Follow the inductor and the sintering body of heater that are designed to the Different Diameter height ratio according to different feedstock properties, enough reducing conditions are arranged to guarantee material; Be lined with refractory material in the inductor, guarantee insulation, heat insulation, the fixed performance of body of heater; Inboard wall of furnace body is to contain the heater that the graphite permeability magnetic material is made, and reaches the required high temperature of reducing process at short notice, and has guaranteed stable not ring formation steady; According to different material body of heater bottom different bore single holes or porous delivery port are set, to control water flow and to go out water state; Settle the magnetic conducting and heating ring in the delivery port bottom, noncondensing to guarantee the delivery port smoothness.Satisfied the requirement of laterite high temperature reduction roasting technique with this.The utility model and traditional rotary kiln baking relatively have that heating is fast, efficient is high, easy to operate, ring formation, a flow process short (below 10 meters), help controlling advantages such as output material state.The utility model is as the two-stage calcination key equipment, and market prospects are wide, is easy to promote, and development potentiality is huge, will produce positive impact to the laterite-type nickel ore resources development and utilization.
Description of drawings:
Accompanying drawing is: intermediate frequency high-temperature roasting furnace accretion composition
1 fire door brick, 2 uralites, 3 aluminium furnace shells, 4 induction coils, 5 furnace linings, 6 heaters, 7 uralites, 8 aluminium stove cover plates, 9 delivery ports, 10 heating rings.
The specific embodiment:
Be described in further detail below in conjunction with drawings and Examples:
Intermediate frequency high-temperature roasting stove adopts intermediate frequency inductor as the roaster thermal source, be to be set with intermediate frequency inductor 4 successively by ecto-entad in the aluminium furnace shell 3, intermediate frequency inductor 4 blade diameter length ratio 1: 2-10, beat real 5mm-10mm refractory lining 5 in the intermediate frequency inductor 4, furnace lining 5 one-shot formings, be set with heater 6 in the furnace lining 5, between furnace lining 5 and the heater 6 the 10-30MM gap to be arranged, centre refractory powder filling, heater 6 is for containing the magnetic conduction tubular heater of graphite, and heater 6 adopts the more piece seam to connect or is one.Diameter 50-300MM is equipped with at the center in kiln, the graphite electrode of length 300-5000MM, with the central electrode roasting of generating heat, upper of furnace body is provided with uralite 2, the top of uralite 2 is equipped with fire door brick 1 and aluminium stove cover plate 8 from bottom to up, bottom of furnace body is provided with single hole or porous blowing delivery port 9, delivery port diameter 5-500mm, the body of heater bottom is provided with heating ring 10, between delivery port 9 and the heating ring 10 the 10-30MM gap to be arranged, centre refractory powder filling, nozzle brick adopt graphite or refractory material to make, and refractoriness is more than 1800 ℃, heating ring 10 is by metal or nonmetal making, be applicable to coal gas, natural gas or acetylene gas heating, bottom of furnace body is provided with jig, is beneficial to heater 6,10 replacing is encircled with heating in the mouth of a river 9.The body of heater bottom is a uralite 7, and the bottom of furnace body delivery port is provided with damping control feeding device, and the body of heater middle part is provided with the reductor tiling arrangement, is convenient to the tilting roasting, and tilting roaster inclination angle is at 5-90 ℃.
The utility model adopts intermediate frequency inductor as the roaster thermal source, with the magnetic conducting and heating body heating roasting that contains graphite.Intermediate frequency high-temperature roasting stove is to be set with intermediate frequency inductor 4 successively by ecto-entad in the aluminium furnace shell 3, intermediate frequency inductor 4 blade diameter length ratios 1: 5, beat real 5mm furnace lining 5 in the intermediate frequency inductor 4, furnace lining 5 one-shot formings, be set with heater 6 in the furnace lining 5, between furnace lining 5 and the heater 6 the 30MM gap will be arranged, centre refractory powder filling, heater 6 is for containing the magnetic conduction tubular heater of graphite, and heater 6 adopts the more piece seam to connect or is one.Upper of furnace body is provided with uralite 2, the top of uralite 2 is equipped with fire door brick 1 and aluminium stove cover plate 8 from bottom to up, bottom of furnace body is provided with single hole or porous blowing delivery port 9, delivery port diameter 5-500mm, the body of heater bottom is provided with heating ring 10, between delivery port 9 and the heating ring 10 the 30MM gap to be arranged, centre refractory powder filling, nozzle brick adopt graphite or refractory material to make, and refractoriness is more than 1800 ℃, heating ring 10 is by metal or nonmetal making, be applicable to coal gas, natural gas or acetylene gas heating, bottom of furnace body is provided with jig, is beneficial to heater 6, the mouth of a river 9, the replacing of heating ring 10.The body of heater bottom is a uralite 7, and the bottom of furnace body delivery port is provided with damping control feeding device.
Intermediate frequency roaster power 40KW, inductor height 800mm, graphitization heater diameter of phi 140mm, high H=800mm, the graphitization mouth of a river 4 * Φ 40, heating graphite ring Φ 160mm * high 80mm, body of heater is uprightly placed, add low-temperature bake material 20KG, the heater temperature can reach more than 1500 ℃ after 20 minutes heat time heating times, the qualified roasting material of beginning output.Directly added for hot 1000 ℃ as low temperature burning material, can reduce 20% heat time heating time.
The utility model adopts intermediate frequency inductor as the roaster thermal source, with the magnetic conducting and heating body heating roasting that contains graphite.Intermediate frequency high-temperature roasting stove is to be set with intermediate frequency inductor 4 successively by ecto-entad in the aluminium furnace shell 3, intermediate frequency inductor 4 blade diameter length ratios 1: 6, beat real 5mm furnace lining 5 in the intermediate frequency inductor 4, furnace lining 5 one-shot formings, be set with heater 6 center in kiln in the furnace lining 5 diameter 300MM is housed, the graphite electrode of length 5000MM, with the central electrode roasting of generating heat, between furnace lining 5 and the heater 6 the 10mm gap to be arranged, centre refractory powder filling, heater 6 is for containing the magnetic conduction tubular heater of graphite, and heater 6 adopts the more piece seam to connect or is one.Upper of furnace body is provided with uralite 2, the top of uralite 2 is equipped with fire door brick 1 and aluminium stove cover plate 8 from bottom to up, bottom of furnace body is provided with single hole or porous blowing delivery port 9, delivery port diameter 5-500mm, the body of heater bottom is provided with heating ring 10, between delivery port 9 and the heating ring 10 the 10MM gap to be arranged, centre refractory powder filling, nozzle brick adopts graphite or refractory material to make, refractoriness is more than 1800 ℃, and heating ring 10 is by metal or nonmetal making, is applicable to coal gas, natural gas or acetylene gas heating, bottom of furnace body is provided with jig, is beneficial to heater 6, the mouth of a river 9, the replacing of heating ring 10.The body of heater bottom is a uralite 7, and the bottom of furnace body delivery port is provided with damping control feeding device, and the body of heater middle part is provided with the reductor tiling arrangement, is convenient to the tilting roasting, and tilting roaster inclination angle is at 25 °.
Intermediate frequency roaster power 9KW, inductor height H=300mm, heat-generating pipe internal diameter 50mm, high H=300mm; Add low-temperature bake material 1000g, heat 10 minutes heater temperature and can reach more than 1500 ℃, the qualified roasting material of beginning output.Directly added for hot 1000 ℃ as low temperature burning material, heat 8 minutes heater temperature and can reach more than 1500 ℃, the qualified roasting material of beginning output.
The utility model adopts intermediate frequency inductor as the roaster thermal source, with the magnetic conducting and heating body heating roasting that contains graphite.Intermediate frequency high-temperature roasting stove is to be set with intermediate frequency inductor 4 successively by ecto-entad in the aluminium furnace shell 3, intermediate frequency inductor 4 blade diameter length ratios 1: 5, accomplish fluently 5mm furnace lining 5 in the intermediate frequency inductor 4, furnace lining 5 one-shot formings, be set with heater 6 in the furnace lining 5, or diameter 200MM is equipped with at the center in kiln, the graphite electrode of length 1800MM, with the central electrode roasting of generating heat, between furnace lining 5 and the heater 6 the 6MM gap to be arranged, centre refractory powder filling, heater 6 is for containing the magnetic conduction tubular heater of graphite, and heater 6 adopts the more piece seams to connect or is one.Upper of furnace body is provided with uralite 2, the top of uralite 2 is equipped with fire door brick 1 and aluminium stove cover plate 8 from bottom to up, bottom of furnace body is provided with single hole or porous blowing delivery port 9, delivery port diameter 5-500mm, the body of heater bottom is provided with heating ring 10, between delivery port 9 and the heating ring 10 the 10MM gap to be arranged, centre refractory powder filling, nozzle brick adopts graphite or refractory material to make, refractoriness is more than 1800 ℃, and heating ring 10 is by metal or nonmetal making, is applicable to coal gas, natural gas or acetylene gas heating, bottom of furnace body is provided with jig, is beneficial to heater 6, the mouth of a river 9, the replacing of heating ring 10.The body of heater bottom is a uralite 7, and the bottom of furnace body delivery port is provided with damping control feeding device.
Intermediate frequency roaster power 250KW, inductor height 1500mm, graphitization heater diameter of phi 400mm, high H=1500mm, the graphitization mouth of a river 10 * Φ 500, heating graphite ring Φ 300mm * high 80mm, body of heater is uprightly placed, add low-temperature bake material 280KG, the heater temperature can reach more than 1500 ℃ after 40 minutes heat time heating times, the qualified roasting material of beginning output.Directly added for hot 1000 ℃ as low temperature burning material, can reduce 20% heat time heating time.
Claims (7)
1. intermediate frequency high-temperature roasting stove, it is characterized in that, adopt intermediate frequency inductor as the roaster thermal source, be to be set with intermediate frequency inductor (4) successively by the interior ecto-entad of aluminium furnace shell (3), accomplish fluently 5mm-10mm furnace lining (5) in the intermediate frequency inductor (4), be set with tubular heater (6) in the furnace lining (5), the graphite electrode of diameter 50-300MM is equipped with at the center in kiln, with the central electrode roasting of generating heat, upper of furnace body is provided with uralite (2), the top of uralite (2) is equipped with fire door brick (1) and aluminium stove cover plate (8) from bottom to up successively, and the bottom is provided with delivery port (9), and the lower end is provided with heating ring (10), the body of heater bottom is uralite (7), the bottom of furnace body delivery port is provided with damping control feeding device, and the body of heater middle part is provided with the reductor tiling arrangement, is convenient to the tilting roasting.
2. according to the described intermediate frequency high-temperature roasting of claim 1 stove, it is characterized in that heater (6) is for containing the magnetic conduction tubular heater of graphite, heater (6) adopts the more piece seam to connect or is one.
3. according to the described intermediate frequency high-temperature roasting of claim 1 stove, it is characterized in that bottom of furnace body is provided with single hole or porous blowing delivery port (9), delivery port diameter 5-500mm, nozzle brick adopt graphite or refractory material to make, and refractoriness is more than 1800 ℃.
4. according to the described intermediate frequency high-temperature roasting of claim 1 stove, it is characterized in that intermediate frequency inductor (4) blade diameter length ratio 1: 2-10.
5. according to the described intermediate frequency high-temperature roasting of claim 1 stove, it is characterized in that furnace lining (5) one-shot forming has the 10-30MM gap between furnace lining (5) and heater (6), the mouth of a river (9) and the heating ring (10), the refractory powder filling is used in the centre, and the bottom is provided with jig.
6. according to the described intermediate frequency high-temperature roasting of claim 1 stove, it is characterized in that heating ring (10) is by metal or nonmetal making.
7. according to the described intermediate frequency high-temperature roasting of claim 1 stove, it is characterized in that tilting roaster inclination angle is at 5-90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200944972U CN201621947U (en) | 2009-10-12 | 2009-10-12 | Middle-frequency high-temperature roasting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200944972U CN201621947U (en) | 2009-10-12 | 2009-10-12 | Middle-frequency high-temperature roasting furnace |
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| CN201621947U true CN201621947U (en) | 2010-11-03 |
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| CN2009200944972U Expired - Lifetime CN201621947U (en) | 2009-10-12 | 2009-10-12 | Middle-frequency high-temperature roasting furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445075A (en) * | 2011-12-15 | 2012-05-09 | 邹建明 | Heating recycling method and device of medium frequency induction roaster |
| CN108083658A (en) * | 2018-01-26 | 2018-05-29 | 辽宁荣创新材料科技有限公司 | A kind of induction heating apparatus and its method for producing light calcined magnesia |
-
2009
- 2009-10-12 CN CN2009200944972U patent/CN201621947U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445075A (en) * | 2011-12-15 | 2012-05-09 | 邹建明 | Heating recycling method and device of medium frequency induction roaster |
| CN102445075B (en) * | 2011-12-15 | 2016-08-10 | 周俊和 | A kind of Medium frequency induction roaster heat energy recovering method and device |
| CN108083658A (en) * | 2018-01-26 | 2018-05-29 | 辽宁荣创新材料科技有限公司 | A kind of induction heating apparatus and its method for producing light calcined magnesia |
| CN108083658B (en) * | 2018-01-26 | 2021-05-14 | 陶云 | Induction heating device and method for producing light-burned magnesium oxide by using same |
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Effective date of registration: 20180524 Granted publication date: 20101103 |
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Date of cancellation: 20190125 Granted publication date: 20101103 |
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Granted publication date: 20101103 |