KR101765696B1 - Rotatry kiln type test apparatus - Google Patents
Rotatry kiln type test apparatus Download PDFInfo
- Publication number
- KR101765696B1 KR101765696B1 KR1020150130897A KR20150130897A KR101765696B1 KR 101765696 B1 KR101765696 B1 KR 101765696B1 KR 1020150130897 A KR1020150130897 A KR 1020150130897A KR 20150130897 A KR20150130897 A KR 20150130897A KR 101765696 B1 KR101765696 B1 KR 101765696B1
- Authority
- KR
- South Korea
- Prior art keywords
- sample
- furnace body
- discharge
- sample storage
- cylindrical portion
- Prior art date
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 30
- 238000010304 firing Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000011261 inert gas Substances 0.000 claims description 18
- 239000000498 cooling water Substances 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 238000001354 calcination Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 2
- 238000006722 reduction reaction Methods 0.000 abstract description 20
- 238000003756 stirring Methods 0.000 abstract description 5
- 239000012495 reaction gas Substances 0.000 abstract description 2
- -1 stirring Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/42—Arrangement of controlling, monitoring, alarm or like devices
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Ceramic Engineering (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Processing Of Solid Wastes (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
An embodiment of the present invention can test the flow of charge and reaction gas, the stirring of the charge and the contact with the gas under similar conditions to the actual rotary kiln, and the conditions such as charging water, stirring, and gas flow A rotary kiln type test apparatus according to one aspect of the present invention is a test apparatus in which a rotary kiln is simulated for a reduction firing test of a sample, A firing furnace body provided with a space for contacting and from which gas for reduction reaction is supplied; A heating unit provided to heat the furnace body; And a frame installed to support the baking furnace main body and the heating unit and having a height adjusting unit for adjusting a horizontal inclination of the furnace body.
Description
The present invention relates to a rotary kiln type test apparatus which can be tested by variously controlling test conditions of a rotary kiln used for material reduction.
Generally, a rotary kiln is a device in which a space in which raw materials are charged is provided in a rotating form, and is used as a calcining furnace for producing cement, lime, charcoal, etc., or a calcining furnace or material It can be used as a reduction furnace to be used.
In particular, the reducing furnace is an operation of charging iron ores with a minute fraction (particle size <10 μm particles> 30%) at a constant rate through a charging device and reducing reaction with hydrogen to reduce iron and nickel in the ore.
The rotary kiln includes a furnace body in the form of a rotating cylinder of a cylindrical or polygonal shape, a supporter for supporting the furnace body, and a drive unit and a power transmission unit provided to transmit rotational force to the body.
In the furnace body, the charge is supplied to the furnace body at a constant speed, and in this process, the reduction reaction occurs by contacting the hydrogen passing through the furnace body. In addition, a plurality of lifters are provided inside the furnace body for lifting and dropping the charge so that the charge can smoothly come into contact with hydrogen.
On the other hand, in the actual operation, in order to operate the rotary kiln as the reduction furnace, it is necessary to accurately compare and analyze the reduction characteristics of the sample sample to which various operating conditions are applied.
However, the rotary kiln used in actual operation is a large facility. When the operating conditions are changed, such a large facility takes at least 3 hours to stabilize the flow and reaction characteristics of the internal raw material. Generally, Raw material charging and heat treatment should be maintained for about 5 hours or more before doing so. Therefore, conventionally, in order to test by changing the operating conditions of the rotary kiln, considerable cost is incurred, such as raw materials and electric power, so that it is not economical and it is difficult to ensure accuracy of measurement.
An embodiment of the present invention can test the flow of charge and reaction gas, the stirring of the charge and the contact with the gas under similar conditions to the actual rotary kiln, and the conditions such as charging water, stirring, and gas flow And it is an object of the present invention to provide a rotary kiln type test apparatus which can be adjusted in various ways.
A rotary kiln type test apparatus according to one aspect of the present invention is a test apparatus in which a rotary kiln is simulated for a reduction firing test of a sample and provides a space in which the sample is in contact with a reducing gas and a gas for reduction reaction is supplied from one side A furnace body; A heating unit provided to heat the furnace body; And a frame installed to support the furnace body and the heating unit and having a height adjusting unit for adjusting the horizontal inclination of the furnace body,
The furnace body includes a first cylindrical portion fixedly installed with respect to the frame and a second cylindrical portion rotatably installed in the first cylindrical portion,
And a cooling part provided to cool the baking furnace main body, wherein the cooling part includes a water jacket formed between the second cylindrical part and the first cylindrical part to be hermetically sealed, and a cooling water circulation .
The second cylindrical portion of the furnace body may be rotatably installed in the first cylindrical portion through a plurality of bearings. The furnace body may include a driving portion provided at one side of the frame for rotating the second cylindrical portion .
In addition, it may include a plurality of lifters detachably provided in the second cylindrical portion.
Further, the bearing may be provided in the first cylindrical portion or a plurality of supports provided in the frame.
delete
The water jacket of the cooling part may be formed to be hermetically sealed between the second cylindrical part supported by the bearing and the first cylindrical part.
The sealing member may further include a sealing member provided between the first cylindrical portion and the second cylindrical portion so as to shield the bearing.
The frame includes a frame main body to which the baking furnace main body and the heating unit are supported, and a frame bottom which is provided to support the frame main body. The height adjuster has one side connected to the frame body, The frame bottom portion is rotatably coupled and the other side can be connected by a height adjusting portion which is height-adjustable and height-adjustable.
The height adjuster may include a resize portion provided on one of the frame body and the frame bottom portion and a pinion gear provided on the other one of the frame body portion and the frame bottom portion, And driving means connected to rotate the pinion gear.
The heating unit may include a heating chamber provided to cover at least a part of the furnace body, a plurality of diaphragms provided to partition an inner space of the heating chamber, and a plurality of diaphragms disposed inside the heating chamber, And may include a heater.
The apparatus may further include a sample loading part connected to the inlet of the furnace body and charged with the sample at a constant speed, and a discharge part positioned at the outlet of the furnace body to discharge the sample.
In addition, the sample loading unit may include a sample storage unit provided at an inclined slope to reduce a cross-sectional area of the sample, a feeder unit disposed at an outlet of the sample storage unit to supply the sample to the calcination furnace body, As shown in Fig.
The sample storage unit may further include an inert gas injection port provided at one side thereof for injecting an inert gas and an air discharge port for discharging air inside the sample storage unit.
The sample storage unit may further include a vacuum pump connected to one side of the sample storage unit for discharging air inside through a connection pipe.
The sample storage unit may include a first pipe installed to supply a sample to the furnace body and a second pipe provided outside the first pipe to supply a hot reducing gas from the furnace body and preheating a sample passing through the first pipe, And a second pipe for hermetically connecting the baking furnace main body and the sample storage part to the first furnace, the feeder being installed in the first furnace to supply a sample, and a sample is preheated to one side of the second furnace A gas outlet for discharging the reducing gas may be provided.
The discharge portion may be provided so as to cover the discharge port of the furnace body, and the lower portion may be provided with an inclined outlet portion provided so as to reduce the discharge cross-sectional area through which the sample is discharged.
In addition, the discharge unit may further include a discharge sample storage unit connected to the slope outlet unit and having a closed storage space for preventing re-oxidation of the reduced sample.
The discharge sample storage unit may further include a discharge sample storage container in which a sample discharged from the baking furnace main body is stored and an opening is formed at one side of the discharge sample storage unit, a lid unit installed in the opening unit to seal the discharge sample storage container, An inert gas inlet for sample discharge provided at one side of the storage vessel to inject inert gas into the inside thereof and a discharge valve provided at a lower portion of the discharged sample storage vessel for discharging the discharge sample.
In addition, the discharge sample storage unit may further include a water supply unit connected to inject water into the discharge sample storage container.
According to one embodiment of the present invention, it is possible to reduce the size of the rocker kiln and to easily change the conditions used in the reduction test, and conditions such as the contact of the reducing gas and the sample through stirring in the reduction test of the sample, , It is possible to improve the accuracy of the reduction test and quickly stabilize the conditions suitable for the reduction test so that the overall test time can be shortened and the cost for the reduction test can be reduced. In addition, a rotary kiln used for commercial purposes is a large-sized facility, and conventionally, a large amount of sample is put into the rotary kiln using a commercial rotary kiln, and the inconvenience of grasping the reduction characteristics due to the fluctuation of the sample components through long- And it is possible to identify the precise reaction characteristics as compared with large facilities. The conventional rotary kiln has a limitation in that it can not freely adjust the tilted angle of the furnace body. However, in this embodiment, the tilted angle of the furnace body can be freely adjusted, It is possible to identify the optimum condition of the process in more detail.
1 is a perspective view of a rotary kiln type test apparatus according to an embodiment of the present invention;
2 (a) and 2 (b) are a side view and a front view showing a main part of a rotary kiln type test apparatus according to an embodiment of the present invention.
3 is a cross-sectional view of a firing furnace body of a rotary kiln type test apparatus according to an embodiment of the present invention.
4 is an enlarged cross-sectional view of part A of Fig.
5 (a) and 5 (b) are a side view and a front view showing a heating unit of a rotary kiln type testing apparatus according to an embodiment of the present invention.
6 (a) and 6 (b) are an enlarged side view and a front view of a height adjusting portion of a rotary kiln type testing apparatus according to an embodiment of the present invention
7 (a) and 7 (b) are a side view and a front view showing a sample loading portion of a rotary kiln type test apparatus according to an embodiment of the present invention.
8 (a) and 8 (b) are a side view and a front view showing a discharge portion of a rotary kiln type test apparatus according to an embodiment of the present invention;
9 (a) and 9 (b) are a side view and a front view showing a sample discharge storage section of a rotary kiln type test apparatus according to an embodiment of the present invention.
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The shape and the size of the elements in the drawings may be exaggerated for clarity and the same elements are denoted by the same reference numerals in the drawings.
FIG. 1 is a perspective view of a rotary kiln type testing apparatus according to an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are side views showing a main part of a rotary kiln type testing apparatus according to an embodiment of the present invention And front view.
Referring to Figs. 1 and 2, a rotary kiln-
The rotary kiln
The
For example, at one side of the
FIG. 3 is a cross-sectional view of a firing furnace body of a rotary kiln type test apparatus according to an embodiment of the present invention, and FIG. 4 is an enlarged cross-sectional view of a portion A of FIG.
3 and 4, the
In addition, a plurality of lifters (not shown) may be provided inside the second
Preferably, the lifter may be provided detachably within the second
The second
A driving unit for rotating the second
For example, the driving unit may include a
In this embodiment, the firing furnace
The
The cooling water circulation part may include a cooling
Although the cooling
Preferably, the cooling water filling space formed in the
The
More specifically, the
The
As the pressure of the cooling water is increased, the sealing
FIGS. 5A and 5B are a side view and a front view showing a heating unit of a rotary kiln type test apparatus according to an embodiment of the present invention, and FIGS. 6A and 6B are cross- A side view and an elevation view showing an enlarged view of a height adjusting portion of a rotary kiln type testing apparatus according to an example.
5, the
Preferably, the
Further, the
Here, the
In addition, in the present embodiment, the
In addition, the
6, the
The
The
For example, the height-shifting member may include a
In the present embodiment, the height adjusting portion includes the
In addition, the present embodiment includes a sample loading portion connected to the inlet of the
7 (a) and 7 (b) are a side view and a front view showing a sample loading portion of a rotary kiln type testing apparatus according to an embodiment of the present invention.
7, the
In addition, the inlet of the
The outlet of the
In addition, an inert gas injection port through which an inert gas is injected to prevent the specimen stored and stored in the
More preferably, the
After the sample is charged, the vacuum pump can forcibly discharge the air inside to the outside to prevent oxidation or reduction of the sample.
Meanwhile, the
Specifically, the
The second
The hot gas after the reduction of the sample can pass through the
The
Preferably, the
The
On the other side of the direction in which the sample is fed from the
8 (a) and 8 (b) are a side view and a front view showing a discharging portion of a rotary kiln type testing apparatus according to an embodiment of the present invention, and Figs. 9 (a) and 9 (b) A side view and a front view showing a sample discharge storage portion of a rotary kiln type test apparatus according to an example.
8 and 9, the
Further, at one side of the
The
The discharged
In addition, one side of the discharged
In addition, a
The discharged
The rotary kiln
Then, an inert gas is supplied to the
Then, while the second
Next, when the test conditions of the firing
The sample put into the second
Meanwhile, in this embodiment, the inclination angle of the baking furnace
In addition, the
Meanwhile, the sample is lifted up by the lifter in the process of moving along the
In addition, the sample can be supplied to the
The
The
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. It will be clear to those who have knowledge.
100: rotary kiln type test apparatus 110: furnace body
112: first cylinder part 114: second cylinder part
120: heating section 122: heating chamber
124: heater 126: diaphragm
130: frame 132:
133: height adjuster 134: frame bottom
135: Support 136: Bearing
138: motor 140: cooling section
142: Water jacket 148: Sealing member
150: sample loading part 152: sample storage part
154: feeder part 160:
162: slope outlet part 170: discharge sample storage part
172: exhaust sample storage container 174: discharge valve
Claims (19)
A heating furnace for heating the firing furnace body; a heating furnace for heating the firing furnace body; a heating furnace for heating the furnace furnace body; And a frame installed to support the firing furnace body and the heating unit and having a height adjusting unit for adjusting the horizontal inclination of the furnace body,
The furnace body includes a first cylindrical portion fixedly installed with respect to the frame and a second cylindrical portion rotatably installed in the first cylindrical portion,
And a cooling part provided to cool the baking furnace main body, wherein the cooling part includes a water jacket formed between the second cylindrical part and the first cylindrical part to be hermetically sealed, and a cooling water circulation A rotary kiln type test apparatus comprising a part.
The second cylindrical portion of the furnace body is rotatably installed in the first cylindrical portion via a plurality of bearings and the furnace body includes a driving portion installed at one side of the frame for rotating the second cylindrical portion Rotary kiln type test equipment.
Wherein the bearing is provided in a plurality of supports provided in the first cylindrical portion or the frame.
Wherein the water jacket of the cooling section is hermetically sealed between the second cylindrical portion supported by the bearing and the first cylindrical portion.
And a sealing member provided between the first cylindrical portion and the second cylindrical portion so as to shield the bearing.
A frame body portion in which the furnace body and the heating portion are supported,
And a frame bottom portion provided to support the frame body portion,
Wherein the height adjusting portion is rotatably coupled to the frame body portion and the frame bottom portion at one side by a rotation connecting member and the other side is connected by a height adjusting portion that is adjustable in height in height direction.
A resize portion provided on any one of the frame body portion and the frame bottom portion,
A pinion gear installed on the other of the frame body portion and the frame bottom portion and engaged with the resize portion,
And driving means connected to rotate the pinion gear.
A heating chamber provided to cover at least a part of the furnace body,
A plurality of diaphragms installed to partition the internal space of the heating chamber,
And a plurality of heaters provided inside the heating chamber divided by the diaphragm.
A sample loading part connected to the inlet of the furnace body for loading the sample at a constant speed,
And a discharge portion which is located at an outlet of the furnace body and through which the sample is discharged.
A sample storage unit provided at an inclined angle so that a lower cross-
A feeder part positioned at an outlet of the sample storage part and supplying the sample to the calcination furnace body,
And a lid portion provided so as to block the inlet of the sample storage portion.
An inert gas injection port provided at one side to inject an inert gas, and an air discharge port for discharging the air inside to the outside.
And a vacuum pump connected to one side for discharging air inside through a connection pipe.
The sample storage unit may include a first tube installed to supply a sample to the baking furnace body and a second tube provided outside the first tube to preheat the sample passing through the first tube, And a second tube for hermetically connecting the calcining furnace body and the sample storage part,
The feeder is installed in the first pipe to feed the sample,
And a gas outlet for discharging the reducing gas preheated by the sample is provided at one side of the second tube.
And an inclined outlet portion provided so as to cover an outlet of the furnace body and provided at a lower portion thereof so as to reduce a discharge cross-sectional area through which the sample is discharged.
And a discharge sample storage unit connected to the inclined exit unit and having a closed storage space for preventing re-oxidation of the reduced sample.
A discharge sample storage vessel in which a sample discharged from the baking furnace main body is stored and an opening is formed at one side,
A lid provided in the opening for sealing the discharge sample storage container;
An inert gas inlet for sample discharge provided at one side of the discharge sample storage container and provided to inject an inert gas into the inside thereof,
And a discharge valve provided at a lower portion of the discharge sample storage container to discharge the discharge sample.
And a water supply means connected to inject water into the discharge sample storage container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150130897A KR101765696B1 (en) | 2015-09-16 | 2015-09-16 | Rotatry kiln type test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150130897A KR101765696B1 (en) | 2015-09-16 | 2015-09-16 | Rotatry kiln type test apparatus |
Publications (2)
| Publication Number | Publication Date |
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| KR20170033472A KR20170033472A (en) | 2017-03-27 |
| KR101765696B1 true KR101765696B1 (en) | 2017-08-08 |
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|---|---|---|---|
| KR1020150130897A KR101765696B1 (en) | 2015-09-16 | 2015-09-16 | Rotatry kiln type test apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109136443A (en) * | 2018-10-31 | 2019-01-04 | 东北大学 | The prereduction rotary system experimental provision and its experimental method recycled for coal gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011106775A (en) * | 2009-11-19 | 2011-06-02 | Eikoh Co Ltd | Rotary kiln |
| JP2012102901A (en) * | 2010-11-08 | 2012-05-31 | Allied Material Corp | Rotary furnace |
| JP2014040987A (en) | 2012-08-23 | 2014-03-06 | Takasago Ind Co Ltd | Seal structure of rotary kiln and rotary kiln |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080064624A (en) | 2007-01-05 | 2008-07-09 | 주식회사 대우일렉트로닉스 | Mechanism for adjusting of height of display apparatus |
| KR20120002763A (en) | 2010-07-01 | 2012-01-09 | (주)동해상사 | A handicapped person and old and infirm for bed chair has a slope control function |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011106775A (en) * | 2009-11-19 | 2011-06-02 | Eikoh Co Ltd | Rotary kiln |
| JP2012102901A (en) * | 2010-11-08 | 2012-05-31 | Allied Material Corp | Rotary furnace |
| JP2014040987A (en) | 2012-08-23 | 2014-03-06 | Takasago Ind Co Ltd | Seal structure of rotary kiln and rotary kiln |
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|---|---|
| KR20170033472A (en) | 2017-03-27 |
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