CN203440424U - Siderite magnetization roasting shaft furnace - Google Patents
Siderite magnetization roasting shaft furnace Download PDFInfo
- Publication number
- CN203440424U CN203440424U CN201320498529.1U CN201320498529U CN203440424U CN 203440424 U CN203440424 U CN 203440424U CN 201320498529 U CN201320498529 U CN 201320498529U CN 203440424 U CN203440424 U CN 203440424U
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- roasting
- zone
- siderite
- shaft furnace
- reduced
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Abstract
The utility model provides a siderite magnetization roasting shaft furnace which comprises a loading trough, a preheating zone, a heating zone and a cooling zone from top to bottom sequentially, wherein a feeding hopper and an upper traverse beam are arranged in the loading trough; an upper combustion chamber and a middle traverse beam are arranged in the preheating zone; a lower combustion chamber is formed in the heating zone; and siderite distributing angle iron is arranged on a cement base of the cooling zone. According to the siderite magnetization roasting shaft furnace, a reducing zone is abandoned on the structure according to a siderite roasting principle, and no reducing tower or lower traverse beam exists; reducing gas isn't required during neutral roasting, and unit consumption of gas is reduced; the construction cost can be reduced while the purchase expense for the reducing tower and the traverse beam is saved, and at the same time, the power of a matched smoke sucker can be reduced; the structure is simplified, the construction cost is low, the technique is mature, and the shaft furnace is suitable for roasting siderite blocks with sizes larger than 7 mm; fine crushing operation is not needed technically, and the engineering investment is reduced; and siderite block roasting dedusting is up to the standard relatively easily, and environmental pollution is reduced.
Description
Technical field
The utility model relates to a kind of vertical roasting furnace, relates in particular to a kind of spathic iron ore magnetic roasting shaft furnace.
Background technology
Magnetizing roasting is, by processes such as heating, weak magnetism mineral are reduced into ferromagnetism iron mineral, makes weak magnetic mineral obtain cost-effective reasonable application method.The method is one of effective means of processing at present both at home and abroad weak magnetic spathic iron ore, limonite or take that it is main mixing ore deposit.
The domestic equipment that carries out at present industrialization magnetizing roasting mainly contains Anshan type magnetic roasting shaft furnace, rotary kiln.Wherein Anshan type magnetic roasting shaft furnace is Iron stone ore deposit roasting apparatus.
As shown in Figure 1, Anshan type vertical roasting furnace, can be divided in stove in kiln roasting process from top to bottom according to nugget:
Charge chute: comprise Ore Hopper 7.Raw ore is discharged into ore deposit groove through conveyor, through Ore Hopper 7, then by deadweight, falls to entering stove preheating zone.
Preheating zone: upper traverse beam more than 6 to Ore Hopper.In preheating zone, waste gas is preheating to certain temperature by ore, and the spent air temperture of preheating zone is 60-220 ℃.
Heating zone: between lower floor combustion chamber 3, combustion chamber, upper strata 5; Heating zone is provided with middle traverse beam 4.Coal gas with add warm air liberated heat mode by convection current, radiation and conduction when the mixed firing of combustion chamber and make the ore temperature in burner hearth reach 400-850 ℃.In heating zone, some ore bursts or pushes after being heated, and from pinkeye, spills, and enters behind combustion chamber, falls into grey flaw 8, regularly discharges.
Zone of reduction: between lower floor combustion chamber 3, coal gas ejection tower 10; Be provided with lower traverse beam 9, coal gas ejection tower 10, reducing gas pipe 11.Ore after heating slowly, by zone of reduction, is reduced into magnetite, and the coal gas ejection tower of zone of reduction bottom is assigned to coal gas in burner hearth equably, and prevents that ore from stopping up ejection pipeline.The temperature of zone of reduction is 330-550 ℃.
Cooling zone 2: in the following part of coal gas ejection tower 10; Comprise the devices such as supporting base 12, Mineral Ejection Roll.In water seal tank, be full of water, after on the one hand the temperature of high temperature ore being reduced, be applicable to belt-conveying, prevent that on the other hand air from entering people's rear oxidation ore.Cooled ore is transported by the machine of taking out of, and send subsequent processing to process.
Shaft furnace is equipped with smoke extractor, makes whole stove in negative pressure working order, can guarantee the antikinesis of gas stream in the stove and ore.It is discharged into waste gas in atmosphere by pipeline and fly-ash separator.
Anshan type vertical roasting furnace is applicable to specularite, rhombohedral iron ore, limonite or take it as main reduction of iron ore roasting; With this type shaft roasting spathic iron ore, in structure, can not meet the operational characteristic of neutral roasting.Its structure relative complex, cost is higher, unit-hour output is relatively on the low side, energy consumption is high.
Utility model content
The purpose of this utility model is for problems of the prior art, and a kind of spathic iron ore magnetic roasting shaft furnace is provided.
Spathic iron ore magnetic roasting shaft furnace of the present utility model, it comprises charge chute, preheating zone, heating zone, cooling zone from top to bottom successively; Described charge chute is provided with Ore Hopper; Preheating zone is provided with traverse beam; Heating zone is provided with combustion chamber, upper strata, lower floor combustion chamber, middle traverse beam; The supporting base of cooling zone is provided with a minute ore deposit iron angle.
The relative prior art of the utility model has the following advantages:
1, iron ore magnetic roasting shaft furnace of the present utility model is abandoned zone of reduction, without reduction tower, without lower traverse beam; Body of heater height is compared with 50-160m
3anshan type shaft furnace can reduce 0-2 m; Neutral roasting does not need reducing gas, can reduce the about 25-50% of gas unit consumption; When saving reduction tower, traverse beam buying expenses, can also reduce executive cost, the power of the smoke extractor simultaneously matching also can reduce, and reduces electric unit consumption.
2, the utility model is selected to adopt individual layer or double combustion chamber according to ore properties, and combustion chamber, upper strata can be cancelled, and according to ore roasting difficulty, arranges; Grey flaw can be cancelled in lower floor combustion chamber; Combustion chamber, grey flaw are determined according to ore properties, when controlling initial cost expense, can reduce gas unit consumption, reduce the radiation of heat to environment, improve post operating environment.
3, the utility model designs simplification, low cost, technology maturation, do not need operation in small, broken bits in technique, reduce construction investment; Lump ore roasting dedusting is relatively easily up to standard, reduces environmental pollution.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, spathic iron ore magnetic roasting shaft furnace of the present utility model is described in further detail.
Spathic iron ore magnetic roasting shaft furnace as shown in Figure 2, it comprises charge chute, preheating zone, heating zone, cooling zone 2 from top to bottom successively; Described charge chute is provided with Ore Hopper 7; Preheating zone is provided with traverse beam 6; Heating zone is provided with combustion chamber, upper strata 5, lower floor combustion chamber 3, middle traverse beam 4; The supporting base 12 of cooling zone 2 is provided with a minute ore deposit iron angle 1.
The utility model is identical to ore deposit mode with the Anshan type vertical roasting furnace of domestic current use, and ore feeds shaft furnace from top, enters successively preheating zone, the heating zone of shaft furnace; Neutral roasting does not have zone of reduction; The qualified ore of roasting directly enters cooling zone 2, by entering water seal tank, continues cooling down, by the machine of taking out of, is transported.
Claims (1)
1. spathic iron ore magnetic roasting shaft furnace, is characterized in that: it comprises charge chute, preheating zone, heating zone, cooling zone (2) from top to bottom successively; Described charge chute is provided with Ore Hopper (7); Preheating zone is provided with traverse beam (6); Heating zone is provided with combustion chamber, upper strata (5), lower floor combustion chamber (3), middle traverse beam (4); The supporting base (12) of cooling zone (2) is provided with a minute ore deposit iron angle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498529.1U CN203440424U (en) | 2013-08-15 | 2013-08-15 | Siderite magnetization roasting shaft furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320498529.1U CN203440424U (en) | 2013-08-15 | 2013-08-15 | Siderite magnetization roasting shaft furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203440424U true CN203440424U (en) | 2014-02-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320498529.1U Expired - Fee Related CN203440424U (en) | 2013-08-15 | 2013-08-15 | Siderite magnetization roasting shaft furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203440424U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104745803A (en) * | 2015-04-03 | 2015-07-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Shaft furnace and application of shaft furnace in coal-based magnetization roasting process for refractory low-grade iron ore |
| CN105567950A (en) * | 2014-10-15 | 2016-05-11 | 俞佳鹏 | Low-grade iron ore dressing device and method |
-
2013
- 2013-08-15 CN CN201320498529.1U patent/CN203440424U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567950A (en) * | 2014-10-15 | 2016-05-11 | 俞佳鹏 | Low-grade iron ore dressing device and method |
| CN105567950B (en) * | 2014-10-15 | 2017-12-01 | 俞佳鹏 | A kind of iron ore of low ore grade preparation equipment and its method |
| CN104745803A (en) * | 2015-04-03 | 2015-07-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Shaft furnace and application of shaft furnace in coal-based magnetization roasting process for refractory low-grade iron ore |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20140815 |
|
| EXPY | Termination of patent right or utility model |