CN202057180U - Wide body tunnel kiln used for baking laterite nickel ore - Google Patents
Wide body tunnel kiln used for baking laterite nickel ore Download PDFInfo
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- CN202057180U CN202057180U CN2011200878516U CN201120087851U CN202057180U CN 202057180 U CN202057180 U CN 202057180U CN 2011200878516 U CN2011200878516 U CN 2011200878516U CN 201120087851 U CN201120087851 U CN 201120087851U CN 202057180 U CN202057180 U CN 202057180U
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- nickel ore
- kiln body
- roasting
- lateritic nickel
- tunnel furnace
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Abstract
The utility model provides a wide body tunnel kiln used for baking laterite nickel ore. The channel kiln comprises a kiln body; a sintering space is defined in the kiln body which has a width of 5-10 meters, a height of 2-5 meters and a length of 40-250 meters; a burner disposed on the kiln body; and a trolley movably disposed in the sintering space. The wide body tunnel kiln used for baking laterite nickel ore can bake laterite nickel ore can with high efficiency.
Description
Technical field
The utility model relates to a kind of field of metallurgy, and the utility model relates to the coal-based roasting wide tunnel furnace of lateritic nickel ore particularly.
Background technology
Characteristics such as that nickel has is anti-oxidant, anticorrosive, high temperature resistant, intensity is high, ductility is good, its purposes is very extensive, especially the consumption proportion maximum in iron and steel and non-ferrous metal metallurgy industry, next is applied in industries such as light industry, machine-building, chemical industry, oil and electric power, and high-technology field is also very vigorous to the demand of nickel.
The reserves of world's continental rise nickel are about 41,700,000,000 tons, and 39.14% form with sulphide ore exists, and about in the world 70% nickel is to extract from sulphide ore, compose to exist the nickel in the ore deposit to account for 60.16% of nickel reserves.But along with the nickel sulfide ore of economic utilization and the exhaustion day by day of high-grade lateritic nickel ore resource, the economic development of a large amount of low-grade lateritic nickel ores that exist has become the research focus of current metallurgy of nickel.
Yet the smelting process of present lateritic nickel ore and equipment still remain to be improved.
The utility model content
The utility model is intended to one of solve the problems of the technologies described above at least.For this reason, a purpose of the present utility model is to propose a kind of efficiently wide tunnel furnace of roasting lateritic nickel ore.
To achieve these goals, comprise with wide tunnel furnace according to the lateritic nickel ore roasting of the utility model embodiment: the kiln body, limit in the described kiln body and burn till the space, the width of wherein said kiln body is a 5-10 rice, high 2-5 rice, the long 40-250 rice of kiln body; Burner, described burner are arranged on the described kiln body; Chassis, described chassis is arranged on described burning till in the space movably.Utilize this laterite roasting wide tunnel furnace, can carry out roasting to lateritic nickel ore efficiently, in addition because the width of kiln body is a 5-10 rice, high 2-5 rice, the long 40-250 rice of kiln body, thereby the amount of every batch of lateritic nickel ore that carries out calcination process is significantly greater than currently used lateritic nickel ore method of roasting.
According to embodiment of the present utility model, the lateritic nickel ore roasting can also have following additional technical feature with wide tunnel furnace:
According to an embodiment of the present utility model, have two chassis, the length-wise axis of described two chassis and described kiln body is arranged on described burning till in the space abreast.
According to an embodiment of the present utility model, have at least three burners.
According to an embodiment of the present utility model, have three burners, wherein first burner and second burner are arranged on the sidewall of described kiln body symmetrically, and the 3rd burner is arranged on the top of described kiln body.According to an embodiment of the present utility model, described kiln body comprises fire brick layer.
According to an embodiment of the present utility model, further comprise saggar, described saggar is arranged on the described chassis.
According to an embodiment of the present utility model, described saggar is what made by refractory material or heat resisting steel.
According to an embodiment of the present utility model, described refractory material is magnesia brick, clay brick or aluminium brick.
According to an embodiment of the present utility model, further comprise the jar of making by clay, carborundum or corundum, described jar is arranged on the described chassis.
According to an embodiment of the present utility model, further comprise and stir the hot-fluid nozzle.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Description of drawings
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is a cross-sectional schematic of using wide tunnel furnace according to the lateritic nickel ore roasting of an embodiment of the utility model.
Fig. 2 is according to an embodiment lateritic nickel ore handling process schematic diagram of the present utility model.
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Below by the embodiment that is described with reference to the drawings is exemplary, only is used to explain the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center "; " vertically "; " laterally "; " on "; D score; " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", close the orientation of indications such as " outward " or position is based on orientation shown in the drawings or position relation, only be the utility model and simplification description for convenience of description, rather than the device or the element of indication or hint indication must have specific orientation, therefore orientation structure and operation with specific can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.
In description of the present utility model, need to prove that unless otherwise prescribed and limit, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be fixedly connected, also can be to removably connect; Can be directly to link to each other, also can link to each other indirectly, for the ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be by intermediary.
Term used herein " roasting " can exchange with " coal-based roasting " and use, promptly be and use the roasting technique of coal as reducing agent, the kind of the coal that uses is not particularly limited, can be for being selected from least a in brown coal, bituminous coal, anthracite and the coke powder.
Lateritic nickel ore roasting according to embodiment is described with wide tunnel furnace and utilize this wide tunnel furnace to carry out the method for lateritic nickel ore roasting below with reference to accompanying drawing.
At first, with reference to the lateritic nickel ore roasting wide tunnel furnace 1000 of figure 1 description according to the utility model embodiment.
According to embodiment of the utility model, the lateritic nickel ore roasting comprises kiln body 100 with wide tunnel furnace 1000, burner 101, burner 101 and chassis 103.
According to embodiment of the present utility model, in the operating process of wide tunnel furnace, the mode of charging reaction thing also is not particularly limited.In an embodiment of the present utility model, adopt mode canned or saggar to feed in raw material, can feed in raw material easily thus and the roasting reaction, and can carry out the roasting reaction of many batches of differential responses things simultaneously, and can cross pollution.For this reason, according to embodiment of the present utility model, the lateritic nickel ore roasting further comprises saggar of being made by refractory material or heat resisting steel that is arranged on the chassis 103 or the jar of being made by clay, carborundum or corundum with wide tunnel furnace.According to embodiment of the present utility model, preferably adopt magnesia brick, clay brick, aluminium brick or heat resisting steel to prepare saggar.
For the ease of understanding,, be described with the method that tunnel cave 1000 carries out the roasting lateritic nickel ore utilizing above-mentioned lateritic nickel ore roasting below with reference to Fig. 2.According to embodiment of the present utility model, this method comprises:
The roasting mixture is provided, described roasting mixture comprises laterite and reducing agent, according to embodiment of the present utility model, described lateritic nickel ore is for being selected from limonite type lateritic nickel ore, transiens lateritic nickel ore and humic soil type lateritic nickel ore at least a, described reducing agent is for being selected from brown coal, bituminous coal, at least a in anthracite and the coke powder, according to embodiment of the present utility model, can further include in the roasting mixture and be selected from lime stone, dolomite, fluorite, sodium carbonate, sodium sulphate, sodium chloride, agent is adjusted at least a conduct of potash, in an example of the present utility model, lateritic nickel ore in the roasting mixture: reducing agent: the part by weight of adjusting agent is 10: 1: 1.Finish the batch mixing process thus.In method of the present utility model, to adjust agent and can select as required, it can promote that the nickel oxide reduction reaction is carried out fast in the laterite.。
Next, described roasting mixture is placed on the described chassis 103, in concrete examples more of the present utility model, wide tunnel furnace 1000 further comprises the saggar of magnesia brick, clay brick or the preparation of aluminium brick, and saggar is arranged on the chassis 103, wherein, the roasting mixture is placed in the saggar, and perhaps wide tunnel furnace 103 further comprises the jar of being made by clay, carborundum or corundum, and jar is arranged on the described chassis, wherein, the roasting mixture is placed in the jar.
Afterwards, the chassis 103 of placing the roasting reactant pushed burn till in the space,, can adopt the guide rail mode easily chassis 103 to be pushed and burn till in the space, be convenient to operation according to concrete example of the present utility model.Start described burner 101 chassis 103 being pushed burn till in the space, fire fuel is carried out roasting to the roasting mixture on the described chassis, and described sintering temperature is 900-1300 degree centigrade, continues 2-40 hour, obtains product of roasting.Burner 101 is arranged on and is used in burning till the space jet flames on the described kiln body 100 and carries out the roasting reaction, the fuel that is utilized according to embodiment burner 101 of the present utility model can be selected from least a of coal gas, natural gas and heavy oil, in a preferred embodiment, employing coal gas acts as a fuel, can carry out the roasting reaction efficiently, and pollution-free.According to embodiment of the present utility model, a plurality of burners can be set, at least three burners for example are to improve the efficient of roasting reaction.In an example of the present utility model, three burners are set, i.e. first burner, 102, the second burners 1021 and the 3rd burner 101.With reference to figure 1, three burners are arranged in such a way, wherein, first burner 102 and second burner 1021 are arranged on the sidewall of kiln body 100 symmetrically, jet flames in burning till the space from the side, the 3rd burner 101 is arranged on the top of kiln body 100, is used for jet flames in burning till the space from the top down.Thus, can carry out the roasting reaction efficiently.More burner can certainly be set, other burners can be arranged at the top of kiln body sidewall or kiln body according to the practical operation needs.According to embodiment of the present utility model, can further include and stir hot-fluid nozzle (not shown), be used in burning till the space, spraying non-oxidized gas, based on the consideration preferred nitrogen and the argon gas of cost.Thus, can improve the efficient and the effect of roasting reaction so that burn till uniformity of temperature profile in the space.
After obtaining product of roasting,, can further handle to obtain the ferronickel concentrate product of roasting according to embodiment of the present utility model.With reference to figure 2, according to embodiment of the present utility model, described product of roasting is carried out fragmentation obtain to adopt any known disintegrating machine that product of roasting is carried out fragmentation here through broken product of roasting, preferably before broken product of roasting, product of roasting is cooled off, so that operation.To carry out the product of roasting that ball milling obtains the process ball milling through broken product of roasting, and can adopt any known ball mill to carry out the ball milling operation here.Described product of roasting through ball milling is carried out magnetic separation obtain powdery ferronickel concentrate, can adopt any magnetic separator to carry out the magnetic separation operation here, preferred magnetic separation is to carry out under the magnetic field intensity of 2500Oe.
The concrete example of following basis is described the method for roasting of lateritic nickel ore of the present utility model, and these concrete examples limit scope of the present utility model never in any form.
Example 1: dried laterite, anthracite, sodium sulphate mix in 10: 1: 1 ratio, the clay jar of packing into, tunnel cave heating tape temperature is 1200 ℃, is incubated 6 hours, naturally cooling back fragmentation, ball milling, magnetic separation under the 2500Oe magnetic field intensity, nickel recovery 93%, iron recovery 95%.
Example 2: dried laterite, anthracite, sodium sulphate, sodium carbonate, fluorite were in 10: 1: 0.5: 0.3: 0.2 ratio is mixed, the clay jar of packing into, tunnel cave heating tape temperature is 1200 ℃, be incubated 8 hours, naturally cooling back fragmentation, ball milling, magnetic separation under the 2500Oe magnetic field intensity, nickel recovery 91%, iron recovery 96%.
Example 3: dried laterite, anthracite, sodium sulphate, lime stone, dolomite, fluorite were in 10: 1: 0.5: 0.2: 0.2: 0.1 ratio is mixed, the clay jar of packing into, tunnel cave heating tape temperature is 1200 ℃, be incubated 5 hours, naturally cooling back fragmentation, ball milling, magnetic separation under the 2500Oe magnetic field intensity, nickel recovery 92%, iron recovery 93%.
Example 4: dried laterite, anthracite, sodium sulphate, lime stone, dolomite, fluorite were in 10: 1: 0.5: 0.2: 0.2: 0.1 ratio is mixed, the refractory material saggar of packing into, tunnel cave heating tape temperature is 1200 ℃, be incubated 8 hours, naturally cooling back fragmentation, ball milling, magnetic separation under the 2500Oe magnetic field intensity, nickel recovery 90%, iron recovery 91%.
In the description of this specification, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present utility model or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment under the situation that does not break away from principle of the present utility model and aim, scope of the present utility model is limited by claim and equivalent thereof.
Claims (10)
1. a lateritic nickel ore roasting wide tunnel furnace is characterized in that, comprising:
The kiln body limits in the described kiln body and burns till the space, and the width of wherein said kiln body is a 5-10 rice, high 2-5 rice, the long 40-250 rice of kiln body;
Burner, described burner are arranged on the described kiln body;
Chassis, described chassis is arranged on described burning till in the space movably.
2. lateritic nickel ore roasting wide tunnel furnace according to claim 1 is characterized in that,
Have two chassis, the length-wise axis of described two chassis and described kiln body is arranged on described burning till in the space abreast.
3. lateritic nickel ore roasting wide tunnel furnace according to claim 1 is characterized in that,
Have at least three burners.
4. lateritic nickel ore roasting wide tunnel furnace according to claim 3 is characterized in that,
Have three burners, wherein first burner and second burner are arranged on the sidewall of described kiln body symmetrically, and the 3rd burner is arranged on the top of described kiln body.
5. lateritic nickel ore roasting wide tunnel furnace according to claim 1 is characterized in that,
Described kiln body comprises fire brick layer.
6. lateritic nickel ore roasting wide tunnel furnace according to claim 1 is characterized in that,
Further comprise saggar, described saggar is arranged on the described chassis.
7. lateritic nickel ore roasting wide tunnel furnace according to claim 6 is characterized in that,
Described saggar is what made by refractory material or heat resisting steel.
8. lateritic nickel ore roasting wide tunnel furnace according to claim 7 is characterized in that,
Described refractory material is magnesia brick, clay brick or aluminium brick.
9. lateritic nickel ore roasting wide tunnel furnace according to claim 1 is characterized in that,
Further comprise the jar of being made by clay, carborundum or corundum, described jar is arranged on the described chassis.
10. lateritic nickel ore roasting wide tunnel furnace according to claim 1 is characterized in that,
Further comprise and stir the hot-fluid nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200878516U CN202057180U (en) | 2011-03-29 | 2011-03-29 | Wide body tunnel kiln used for baking laterite nickel ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200878516U CN202057180U (en) | 2011-03-29 | 2011-03-29 | Wide body tunnel kiln used for baking laterite nickel ore |
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| Publication Number | Publication Date |
|---|---|
| CN202057180U true CN202057180U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200878516U Expired - Fee Related CN202057180U (en) | 2011-03-29 | 2011-03-29 | Wide body tunnel kiln used for baking laterite nickel ore |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235823A (en) * | 2011-03-29 | 2011-11-09 | 中国恩菲工程技术有限公司 | Wide-bodied tunnel kiln for roasting lateritic nickel ore |
-
2011
- 2011-03-29 CN CN2011200878516U patent/CN202057180U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235823A (en) * | 2011-03-29 | 2011-11-09 | 中国恩菲工程技术有限公司 | Wide-bodied tunnel kiln for roasting lateritic nickel ore |
| CN102235823B (en) * | 2011-03-29 | 2014-03-26 | 中国恩菲工程技术有限公司 | Wide-bodied tunnel kiln for roasting lateritic nickel ore |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20140329 |