CN101392989A - Suspending magnetization roasting furnace - Google Patents
Suspending magnetization roasting furnace Download PDFInfo
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- CN101392989A CN101392989A CNA2007100128679A CN200710012867A CN101392989A CN 101392989 A CN101392989 A CN 101392989A CN A2007100128679 A CNA2007100128679 A CN A2007100128679A CN 200710012867 A CN200710012867 A CN 200710012867A CN 101392989 A CN101392989 A CN 101392989A
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Abstract
The invention provides a suspension magnetizing roasting furnace, which consists of a furnace body and a cyclone separator, wherein an upper part discharge port of the furnace body is fixedly connected with a feeding port of the cyclone separator; a top cover of the cyclone separator is fixedly provided with an exhaust pipe, the lower end of a conical platform body of the cyclone separator is fixedly connected with a material discharge pipe, the lower end of the furnace body is vertically provided with a conical platform body and a vertical guide pipe which are fixedly connected with each other into a whole; and the furnace wall of the lower part of the cylindrical furnace body is provided with the feeding port, a heat supply port of an auxiliary combustor and a heat supply port of a heat supply roaster respectively. The furnace has the advantages: 1. the furnace is widely applied to the magnetized roasting of various refractory minerals such as iron-bearing mineral, siderite, complex multi-phase iron ore and the like and wastes such as ore tailings, slag, red mud and the like; 2. powdery materials are suspended in air flow for quick heat transfer and deep reducing reaction, and the magnetic susceptibility of the obtained roasted product is high, and better than that of the prior equipment; and 3. the equipment is easy for mass production, and the throughput of one furnace can reach 2 million tons per year, which is few times higher than that of other known equipment.
Description
Technical field
The present invention relates to a kind of iron mineral preparation equipment, particularly relate to a kind of technical equipment that is applicable to the ore dressing of refractory iron ore thing.
Background technology
The principle of magnetizing roast is the process that under the heated condition volatile substance in the refractory iron ore thing (carbon dioxide, water) is removed or di-iron trioxide wherein is reduced into tri-iron tetroxide.The magnetizing roast process of traditional processing technology realizes in shaft kiln, rotary kiln.
The shaft kiln production technology is relatively backward, is easy to generate burning and underburnt, and the iron ore reduction rate is low, can not handle the raw material that is prone to hot powder phenomenon-tion as limonite, siderite one class.
The rotary kiln production technology has overcome the above-mentioned shortcoming of shaft kiln to a certain extent, but hear rate is very high, has ring formation, skinning simultaneously, production operation problems such as frit occur.
No matter shaft kiln or rotary kiln, conduct heat and mass transfer velocity slowly, adjustment is long lag time, iron oxide magnetization rate does not reach more than 98% in the calcining, the production capacity of single device is all not really high.
Summary of the invention
Purpose of the present invention provides a kind of suspending magnetization roasting furnace, is used for from refractory iron ore material preparation iron ore concentrate calcining the iron ore rate of recovery of follow-up magnetic separation operation being improved greatly.
The technical scheme that adopts is:
Suspending magnetization roasting furnace comprises suspend magnetization oven body and separator.The magnetization furnace body inwall that suspends is provided with refractory lining, and the top material outlet of the magnetization furnace body that suspends is connected with the separator material inlet by delivery channel.The furnace roof that magnetizes furnace body that suspends is open hearth top or arch stove.The bottom of suspension magnetization stove is a cone table, and cone table is connected with a vertically disposed conduit solid welding.The magnetization furnace body that suspends is provided with material inlet, and is connected with the heat supply inlet of auxiliary burner and heat supply burner.The separator upper end is provided with exhaust outlet, and its lower end is fixed with drainage conduit, is equiped with the expanding type voltage-stablizer in the drainage conduit upper end.
The middle part of above-mentioned suspending magnetization roasting furnace body can be made into the saddle type structure of indent, can fixedly connected with a horizontally disposed tangent line conduit in above-mentioned conduit lower end, and combustion air is introduced from vertical conduit or tangent line conduit.Flame and combustion product and from entering the material direct contact heat transfer in the stove, flue gas band material suspended rising and are flow to delivery channel and enter the separation chamber and separate, and the separation chamber is made up of cyclone separator and expanding type voltage-stablizer.
The basic operational functions of suspending magnetization roasting is: refractory iron ore thing grinding to below particle mean size 250 orders, is sent into suspending magnetization roasting furnace and carried out magnetizing roast, and the crystallization water and the carbon dioxide removed in the mineral are made iron ore concentrate.If other impurity too much in the raw ore, grade is lower, then the calcining that magnetizing roast is obtained send magnetic separator to select iron ore concentrate behind ore grinding.
From the red mud of nonferrous metallurgy waste residue or the discharge of alumina producing factory, extracting in the technology of iron ore concentrate, we have adopted high intensity magnetic separation → filtration → drying and magnetizing roast → ore grinding → low intensity magnetic separation → flotation → dealkalize → filtration to wait several operations, though the flow process complexity still has considerable economic and bigger environmental protection social benefit.And suspending magnetization roasting furnace of the present invention is the key equipment in the whole technical process.
The present invention has following advantage:
1, is widely used in all kinds of iron-bearing minerals, refractory minerals such as bag siderite, complicated heterogeneous iron ore, and the magnetizing roast of mine tailing, slag and red mud the like waste.
2, granular material is suspended in and carries out quick caloic transmission and drastic reduction reaction in the air-flow, and gained calcining magnetic susceptibility height is better than legacy equipment.
3, equipment is easy to maximize, and separate unit stove production capacity can reach 2,000,000 tons of calcining/years, is several times as much as other known device.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of suspending magnetization roasting furnace.
Fig. 2 is the structural representation of second kind of embodiment of suspending magnetization roasting furnace.
Fig. 3 is the structural representation of the third embodiment of suspending magnetization roasting furnace.
Fig. 4 is the structural representation of the 4th kind of embodiment of suspending magnetization roasting furnace.
The specific embodiment
Embodiment one
Suspending magnetization roasting furnace is made up of the body of heater 1 and the cyclone separator 2 of the suspending magnetization roasting furnace that has refractory lining, and body of heater 1 upper part discharge port 3 is fixedlyed connected with the charging aperture of cyclone separator 2.Be fixedly connected with blast pipe 4 on the cyclone separator top cover, the lower end of the cone table 5 of cyclone separator 2 is fixedly connected with drainage conduit 6, is equiped with expanding type voltage-stablizer 7 on the drainage conduit 6.The furnace roof 15 of body of heater 1 is flat shape furnace roof, and the upper of furnace body of suspending magnetization roasting furnace is a cylinder, and the cylinder bottom is cone table 8 and vertical conduit 9, and fixedly connected formation in aggregates.On the lower part wall of body of heater 1, be fixed with charging aperture 10, on vertical conduit 9, be equiped with the heat supply inlet 12 of auxiliary burner heat supply inlet 11 and heat supply roasting device.
Embodiment two
Embodiment two and embodiment one are structurally basic identical, and its difference is that the furnace roof 15 of the body of heater 1 of suspending magnetization roasting furnace is the arch furnace roof, and heat supply inlet 11 and 12 is separately fixed on the cone table 8.
Embodiment three
Embodiment three is structurally basic identical with embodiment one, and its difference is that the middle part of the body of heater 1 of suspending magnetization roasting furnace is the saddle-shape body 13 of indent.
Embodiment four
Embodiment four and embodiment three are structurally basic identical, and its difference is that the lower end of vertical conduit 9 is fixed with the tangent line conduit 14 perpendicular to vertical conduit 9.
Claims (6)
1, suspending magnetization roasting furnace comprises that body of heater (1) and cyclone separator (2) form, and it is characterized in that the upper part discharge port (3) of body of heater (1) fixedlys connected with the charging aperture of cyclone separator (2); Be fixed with blast pipe (4) on the cyclone separator top cover, the lower end of the cone table (5) of cyclone separator (2) is fixedly connected with drainage conduit (6), and body of heater (1) lower end vertically is provided with cone table (8) and vertical conduit (9), and fixedly connected in aggregates; On cylinder body of heater (1) furnace wall, bottom, be respectively equipped with the heat supply mouth (11) of charging aperture (10), auxiliary burner and the heat supply inlet (12) of heat supply roasting device.
2, suspending magnetization roasting furnace according to claim 1, the furnace roof (15) that it is characterized in that described body of heater (1) is flat shape furnace roof.
3, suspending magnetization roasting furnace according to claim 1, the furnace roof (15) that it is characterized in that described body of heater (1) is the arch furnace roof; The heat supply inlet (11) of auxiliary burner and the heat supply inlet (12) of heat supply burner are separately fixed on the cone table (8).
4, suspending magnetization roasting furnace according to claim 1, the middle part that it is characterized in that described body of heater (1) are the saddle-shape body (13) of indent.
5, suspending magnetization roasting furnace according to claim 3, the lower end that it is characterized in that described vertical conduit (9) is fixed with the tangent line conduit (14) perpendicular to vertical conduit (9).
6,, it is characterized in that being equiped with on the described drainage conduit (4) expanding type voltage-stablizer (7) according to claim 1 or 2,3,4,5 described suspending magnetization roasting furnaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100128679A CN101392989A (en) | 2007-09-17 | 2007-09-17 | Suspending magnetization roasting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100128679A CN101392989A (en) | 2007-09-17 | 2007-09-17 | Suspending magnetization roasting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101392989A true CN101392989A (en) | 2009-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100128679A Pending CN101392989A (en) | 2007-09-17 | 2007-09-17 | Suspending magnetization roasting furnace |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436691A (en) * | 2013-07-31 | 2013-12-11 | 中国地质科学院矿产综合利用研究所 | Fluidized magnetization reduction roasting device |
| CN104357651A (en) * | 2014-10-31 | 2015-02-18 | 成都利君实业股份有限公司 | Powder magnetization roasting and cooling system |
| CN106868292A (en) * | 2017-03-31 | 2017-06-20 | 东北大学 | A kind of refractory iron ore multistage suspension magnetizing roast magnetic separation system device and method |
| CN107523686A (en) * | 2017-07-19 | 2017-12-29 | 东北大学 | A kind of device and method that Iron concentrate is prepared for red mud suspension roasting |
| CN107739162A (en) * | 2017-12-01 | 2018-02-27 | 河南中蓝新材料科技有限公司 | A kind of roaster system using gaseous fuel suspension roasting powdery active lime |
| CN114700349A (en) * | 2022-04-07 | 2022-07-05 | 广西大学 | Biofuel shaft kiln, red mud magnetizing device and red mud magnetizing method |
-
2007
- 2007-09-17 CN CNA2007100128679A patent/CN101392989A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436691A (en) * | 2013-07-31 | 2013-12-11 | 中国地质科学院矿产综合利用研究所 | Fluidized magnetization reduction roasting device |
| CN104357651A (en) * | 2014-10-31 | 2015-02-18 | 成都利君实业股份有限公司 | Powder magnetization roasting and cooling system |
| CN106868292A (en) * | 2017-03-31 | 2017-06-20 | 东北大学 | A kind of refractory iron ore multistage suspension magnetizing roast magnetic separation system device and method |
| CN106868292B (en) * | 2017-03-31 | 2018-04-06 | 东北大学 | A kind of refractory iron ore multistage suspension magnetizing roast magnetic separation system device and method |
| US10543491B2 (en) | 2017-03-31 | 2020-01-28 | Northeastern University | Multi-stage suspension magnetizing roasting-magnetic separation system device and method for refractory iron ore |
| CN107523686A (en) * | 2017-07-19 | 2017-12-29 | 东北大学 | A kind of device and method that Iron concentrate is prepared for red mud suspension roasting |
| CN107523686B (en) * | 2017-07-19 | 2019-04-23 | 东北大学 | A kind of device and method preparing Iron concentrate for red mud suspension roasting |
| CN107739162A (en) * | 2017-12-01 | 2018-02-27 | 河南中蓝新材料科技有限公司 | A kind of roaster system using gaseous fuel suspension roasting powdery active lime |
| CN114700349A (en) * | 2022-04-07 | 2022-07-05 | 广西大学 | Biofuel shaft kiln, red mud magnetizing device and red mud magnetizing method |
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Open date: 20090325 |