CN110567260A - Concentrate powder dewatering device - Google Patents
Concentrate powder dewatering device Download PDFInfo
- Publication number
- CN110567260A CN110567260A CN201910839282.7A CN201910839282A CN110567260A CN 110567260 A CN110567260 A CN 110567260A CN 201910839282 A CN201910839282 A CN 201910839282A CN 110567260 A CN110567260 A CN 110567260A
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- CN
- China
- Prior art keywords
- cylinder
- concentrate powder
- resistance wire
- outer wire
- wire tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
- F26B17/16—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials passing down a heated surface, e.g. fluid-heated closed ducts or other heating elements in contact with the moving stack of material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
- F26B23/06—Heating arrangements using electric heating resistance heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/08—Granular materials
Abstract
the invention discloses a concentrate powder dewatering device, which belongs to the technical field of pellet production, and is characterized in that an outer wire pipe is arranged below a feeding point of a feeding belt and used for conveying concentrate powder; the resistance wire is spirally wound on the outer surface of the outer wire tube; the cylinder is sleeved outside the outer wire tube, and a preset distance is reserved between the inner wall of the cylinder and the outer wall of the outer wire tube; the power supply is connected with the two ends of the resistance wire and provides power for the resistance wire, so that the technical effects of reducing the moisture of the concentrate powder for pellet production, improving the temperature of the concentrate powder, improving the pelletizing performance of the concentrate powder, being beneficial to improving the pelletizing rate of pellets and the quality of finished pellets, and being low in equipment investment cost and easy to install and use are achieved.
Description
Technical Field
The invention relates to the technical field of pellet production, in particular to a concentrate powder dewatering device.
background
Pellet ore is one of main furnace materials for blast furnace ironmaking, and a plurality of iron and steel enterprises have own pellet ore production plants. At present, the total energy of pellets in China is about 2 hundred million tons. The concentrate powder is a raw material for pellet production, and the pellet production generally requires that the content of particles of the concentrate powder with the particle size of below 74 mu m is above 80 percent, and the water content is below 8 percent. However, most of the concentrate powder in the pellet mill has a high water content of more than 8.5%, especially the water content of the concentrate powder in winter production exceeds 9%, and even the water content of the concentrate powder in some pellet mills exceeds 10%. When the water content of the concentrate powder is high, the uniformity of the green pellet particle size in the pelletizing process is obviously reduced, the pelletizing rate is low, the green pellets have rough surfaces and are mutually adhered, so that the green pellets have high water content and high drying difficulty in the roasting process, are easy to crack and produce powder, seriously affect the stability of the subsequent roasting process, the compressive strength and other indexes of finished pellet ore and also affect the yield. At present, many pellet mills take measures of improving the proportion of a binder, namely bentonite when the water content of concentrate powder is high, but the improvement of the proportion of the bentonite can increase the gangue content of pellet ore and reduce the iron grade, and is not beneficial to blast furnace concentrate and smelting. Some pelletizing plants invest in the construction of drying kilns, and concentrate powder is dried by the drying kilns to reduce water, but the drying kilns have the disadvantages of high investment, high operation and maintenance cost and difficulty in long-term use.
Disclosure of Invention
The invention provides a concentrate powder dewatering device, and aims to reduce the water content of concentrate powder for pellet production, increase the temperature of the concentrate powder, improve the pelletizing performance of the concentrate powder, and increase the pelletizing rate of pellets and the quality of finished pellets.
the invention provides a concentrate powder dewatering device, comprising: the outer wire pipe is arranged below a feeding point of the feeding belt and used for conveying the concentrate powder through the feeding belt; the resistance wire is spirally wound on the outer surface of the outer wire tube; the cylinder is sleeved outside the outer wire tube, and a preset distance is reserved between the inner wall of the cylinder and the outer wall of the outer wire tube; and the power supply is connected with two ends of the resistance wire and provides power for the resistance wire.
Preferably, the outer surface of the outer wire tube is provided with a thread groove, and the resistance wire is contained in the thread groove.
Preferably, the method further comprises the following steps: the temperature controller is connected with the resistance wire and controls the power of the resistance wire; the variable frequency motor is connected with one end of the cylinder and drives the cylinder to rotate through a motor shaft; the frequency converter is connected with the variable frequency motor; wherein the rotation speed of the cylinder is adjusted by the frequency converter and the variable frequency motor.
Preferably, the method further comprises the following steps: the fixed shaft is arranged in the middle of the outer wire tube and is fixedly connected with the outer wire tube; one end of the fixed arm is connected with one end, far away from the variable frequency motor, of the fixed shaft; the fixing seat is connected with one end, far away from the fixing shaft, of the fixing arm.
preferably, a clamping groove is formed in one end, connected with the variable frequency motor, of the cylinder, and a motor shaft of the variable frequency motor is accommodated in the clamping groove.
Preferably, the method further comprises the following steps: the base, inverter motor fixes on the base.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
The concentrate powder dewatering device provided by the embodiment of the invention comprises: the device comprises an outer wire pipe, a resistance wire, a cylinder and a power supply, wherein the outer wire pipe is arranged below a feeding point of a feeding belt and used for conveying concentrate powder through the feeding belt; the resistance wire is spirally wound on the outer surface of the outer wire tube, the cylinder is sleeved outside the outer wire tube, and the cylinder and the outer wire tube are not contacted, namely, a preset distance is reserved between the inner wall of the cylinder and the outer wall of the outer wire tube; the resistance wire wound in the thread groove is arranged on a power supply at two ends, then the resistance wire can be heated after the power supply is turned on, when the resistance wire wound outside the outer wire tube is heated, the surface of the cylinder is further heated, the surface temperature of the cylinder reaches 150-500 ℃, the concentrate powder below the feeding point falls on the surface of the cylinder and is heated, partial moisture is lost while the temperature is increased, and the purpose of adjusting the moisture of the concentrate powder is achieved, so that the technical problems that the moisture of the concentrate powder is high in the roasting process, the drying difficulty is high, the green pellets are easy to crack and produce powder, the stability of the subsequent roasting process and the compressive strength of finished pellet ore are seriously influenced, and the yield is influenced in the prior art are solved, the moisture of the concentrate powder for pellet production is reduced, the temperature of the concentrate powder is increased, and the pelletizing performance of the concentrate powder is improved, the method is favorable for improving the pelletizing rate of the pellets and the quality of finished pellets, and has the technical effects of low equipment investment cost and easy installation and use.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
FIG. 1 is a schematic structural view of a concentrate powder dewatering device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the installation of the outer wire tube of FIG. 1;
Fig. 3 is a schematic view of the installation of the cylinder of fig. 1.
Description of reference numerals: 1, concentrate powder; a cylindrical surface 2; an outer wire tube 3; a fixed shaft 4; a fixed arm 5; a resistance wire 6; a fixed seat 7; a temperature controller 8; a power supply 9; a feeding belt 10; a cylinder 11; a card slot 12; a motor shaft 13; a variable frequency motor 14; a base 15; a frequency converter 16; thread groove 17.
Detailed Description
the embodiment of the invention provides a concentrate powder dewatering device, which is used for solving the technical problems that in the prior art, when the moisture content of concentrate powder is high, green pellets in a roasting process is high, the drying difficulty is high, the green pellets are easy to crack and produce powder, the stability of a subsequent roasting process, the compressive strength of finished pellets and other indexes are seriously influenced, and the yield is influenced.
the technical scheme in the embodiment of the invention has the following general idea:
according to the concentrate powder dewatering device provided by the embodiment of the invention, the outer wire pipe is arranged below the feeding point of the feeding belt and used for conveying concentrate powder; the resistance wire is spirally wound on the outer surface of the outer wire tube; the cylinder is sleeved outside the outer wire tube, and a preset distance is reserved between the inner wall of the cylinder and the outer wall of the outer wire tube; the power supply is connected with the two ends of the resistance wire and provides power for the resistance wire, so that the technical effects of reducing the moisture of the concentrate powder for pellet production, improving the temperature of the concentrate powder, improving the pelletizing performance of the concentrate powder, being beneficial to improving the pelletizing rate of pellets and the quality of finished pellets, and being low in equipment investment cost and easy to install and use are achieved.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
examples
fig. 1 is a schematic structural diagram of a concentrate powder dewatering device in an embodiment of the present invention, as shown in fig. 1:
The concentrate powder dewatering device comprises: the device comprises an outer wire tube 3, a resistance wire 6 and a power supply 9, wherein the outer wire tube 3 is arranged below a feeding point of a feeding belt 10, concentrate powder 1 is conveyed through the feeding belt 10, and the resistance wire 6 is spirally wound on the outer surface of the outer wire tube 3; and the power supply 9 is connected with two ends of the resistance wire 6 and provides power for the resistance wire 6.
Specifically, the outer wire tube 3 is a part of the concentrate powder dewatering device for winding the resistance wire 6, and in actual operation, the outer wire tube 3 for winding the resistance wire 6 is integrally installed below a feeding point of the concentrate powder 1, so that the concentrate powder 1 on the feeding belt 10 can fall on the stainless steel cylindrical surface 2.
Further, the outer surface of the outer wire tube 3 is provided with a thread groove 17, and the resistance wire 6 is accommodated in the thread groove 17.
Specifically, the shape of outer wire tube 3 is a cylinder structure, and then offers department thread groove 17 at the surface of outer wire tube 3, then when the outside winding resistance wire 6 of outer wire tube 3, can twine resistance wire 6 in thread groove 17 to reach resistance wire 6 and can stably install the purpose in outer wire tube 3 outside, and then make resistance wire 6 can generate heat after the circular telegram.
The concentrate powder dewatering device further comprises: the cylinder 11 is sleeved outside the outer wire tube 3, and a preset distance is reserved between the inner wall of the cylinder 11 and the outer wall of the outer wire tube 3; the variable frequency motor 14 is connected with one end part of the cylinder 11, and the variable frequency motor 14 drives the cylinder 11 to rotate through a motor shaft 13; and the frequency converter 16 is connected with the variable frequency motor 14, and the frequency converter 16 is connected with the variable frequency motor 14.
Furthermore, a clamping groove 12 is formed at one end of the cylinder 11 connected with the variable frequency motor 14, and a motor shaft 13 of the variable frequency motor 14 is accommodated in the clamping groove 12.
The concentrate powder dewatering device further comprises: and the base 15 is fixed on the variable frequency motor 14.
further, the rotation speed of the drum 11 is adjusted by the inverter 16 and the inverter motor 14.
Further, when the cylinder 11 is driven by the variable frequency motor 14 to rotate, the outer wire tube 3 is fixed.
Further, the temperature control of the surface of the cylinder 11 has a preset range, and the preset range is 150 ℃ to 500 ℃.
Specifically, the material of the cylinder 11 may be stainless steel, and the cylinder 11 may be adapted according to the size of the outer wire tube 3, and then the stainless steel cylinder 11 is sleeved outside the outer wire tube 3, the outer wire tube 3 and the cylinder 11 have the same central axis, and the outer wire tube 3 and the cylinder 11 are not in contact with each other, that is, a certain distance is provided between the outer wire tube 3 and the cylinder 11. Further, as shown in fig. 3, a slot 12 is formed at one end of the stainless steel cylinder 11, the slot 12 and the stainless steel cylinder 11 are integrated, a motor shaft 13 of the inverter motor 14 is inserted into the slot 12 of the cylinder 11, and the stainless steel cylinder 11 is rotated by the motor shaft 13 when the inverter motor 14 rotates. Wherein, inverter motor 14 is fixed on base 15, and converter 16 is connected with inverter motor 14, and drum 11 rotates thereupon under inverter motor 14's drive, and because outer fiber tube 3 is fixed on fixing base 7 this moment, outer fiber tube 3 does not rotate, and wherein, the rotational speed of drum 11 is through converter 16 and inverter motor 14 control. After the power supply 9 works, the resistance wire 6 wound in the thread groove 17 outside the outer wire tube 3 generates heat, and then the surface 2 of the stainless steel cylinder is heated, so that the temperature of the surface 2 of the stainless steel cylinder reaches 150-500 ℃, the temperature of the surface 2 of the stainless steel cylinder is controlled by the temperature controller 8, the concentrate powder 1 is heated when falling on the surface 2 of the stainless steel cylinder, partial moisture is lost while the temperature is increased, and the purpose of adjusting the moisture of the concentrate powder is achieved.
The concentrate powder dewatering device further comprises: and the temperature controller 8 is connected with the resistance wire 6, and the temperature controller 8 controls the power of the resistance wire 6.
The concentrate powder dewatering device further comprises: the fixed shaft 4 is arranged in the middle of the outer wire tube 3 and is fixedly connected with the outer wire tube 3; one end of the fixed arm 5 is connected with one end, far away from the variable frequency motor 14, of the fixed shaft 4; and the fixed seat 7 is connected with one end, far away from the fixed shaft 4, of the fixed arm 5.
Specifically, as shown in fig. 2, the fixing shaft 4 is used for mounting the outer wire tube 3, and in use, the outer wire tube 3 is mounted on the fixing shaft 4, the fixing shaft 4 is located at the center position of the outer wire tube 3, and is mounted on the fixing base 7 through the fixing arm 5, that is, the fixing shaft 4 is fixed on the fixing base 7 through the fixing arm 5. Further, the two ends of the resistance wire 6 wound in the thread groove 17 are mounted on a power supply 9, then a temperature controller 8 is further mounted on the power supply 9, the power and the temperature of the resistance wire 6 are controlled through the temperature controller 8, and therefore the temperature of the surface 2 of the stainless steel cylinder is adjusted, and the temperature of the surface 2 of the stainless steel cylinder is controlled to be 150-500 ℃.
After the power supply 9 is turned on, the resistance wire 6 wound in the thread groove 17 outside the outer wire tube 3 generates heat to heat the surface 2 of the stainless steel cylinder, the temperature of the surface 2 of the stainless steel cylinder can be controlled by the temperature control instrument 8 to be controlled at 150-500 ℃, the concentrate powder 1 is heated when falling on the surface 2 of the stainless steel cylinder, the temperature is increased, and partial moisture is lost, so that the purpose of reducing the moisture of the concentrate powder is achieved.
The rotating speed of the stainless steel cylinder 11 is controlled by the frequency converter 16 and the variable frequency motor 14, the retention time of the concentrate powder 1 on the surface 2 of the stainless steel cylinder is short when the rotating speed is high, the retention time of the concentrate powder 1 on the surface 2 of the cylinder is relatively long when the rotating speed is low, and the heating degree and the water loss amount of the concentrate powder 1 can be controlled by the frequency converter 16.
Therefore, the water content of the concentrate powder can be properly reduced and the temperature of the concentrate powder can be properly increased before pelletizing by the concentrate powder dewatering device in the embodiment, so that the pelletizing performance of the concentrate powder is improved. The device is beneficial to improving the production efficiency, reducing the usage amount of the binder and improving the green pellet quality, thereby improving the performance index of finished pellet ore, and the device has low investment cost and is easy to install and use.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
the concentrate powder dewatering device provided by the embodiment of the invention comprises: the device comprises an outer wire pipe, a resistance wire, a cylinder and a power supply, wherein the outer wire pipe is arranged below a feeding point of a feeding belt and used for conveying concentrate powder through the feeding belt; the resistance wire is spirally wound on the outer surface of the outer wire tube, the cylinder is sleeved outside the outer wire tube, and the cylinder and the outer wire tube are not contacted, namely, a preset distance is reserved between the inner wall of the cylinder and the outer wall of the outer wire tube; the resistance wire wound in the thread groove is arranged on a power supply at two ends, then the resistance wire can be heated after the power supply is turned on, when the resistance wire wound outside the outer wire tube is heated, the surface of the cylinder is further heated, the surface temperature of the cylinder reaches 150-500 ℃, the concentrate powder below the feeding point falls on the surface of the cylinder and is heated, partial moisture is lost while the temperature is increased, and the purpose of adjusting the moisture of the concentrate powder is achieved, so that the technical problems that the moisture of the concentrate powder is high in the roasting process, the drying difficulty is high, the green pellets are easy to crack and produce powder, the stability of the subsequent roasting process and the compressive strength of finished pellet ore are seriously influenced, and the yield is influenced in the prior art are solved, the moisture of the concentrate powder for pellet production is reduced, the temperature of the concentrate powder is increased, and the pelletizing performance of the concentrate powder is improved, the method is favorable for improving the pelletizing rate of the pellets and the quality of finished pellets, and has the technical effects of low equipment investment cost and easy installation and use.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (8)
1. A concentrate powder dewatering device is characterized by comprising:
The outer wire pipe is arranged below a feeding point of the feeding belt and used for conveying the concentrate powder through the feeding belt;
The resistance wire is spirally wound on the outer surface of the outer wire tube;
The cylinder is sleeved outside the outer wire tube, and a preset distance is reserved between the inner wall of the cylinder and the outer wall of the outer wire tube;
And the power supply is connected with two ends of the resistance wire and provides power for the resistance wire.
2. The concentrate powder dewatering device according to claim 1, wherein the outer surface of the outer wire tube is provided with a threaded groove, and the resistance wire is accommodated in the threaded groove.
3. the concentrate fines dewatering apparatus of claim 1, further comprising:
The temperature controller is connected with the resistance wire and controls the power of the resistance wire;
The variable frequency motor is connected with one end of the cylinder and drives the cylinder to rotate through a motor shaft;
The frequency converter is connected with the variable frequency motor;
Wherein the rotation speed of the cylinder is adjusted by the frequency converter and the variable frequency motor.
4. The concentrate fines dewatering apparatus of claim 3, further comprising:
the fixed shaft is arranged in the middle of the outer wire tube and is fixedly connected with the outer wire tube;
One end of the fixed arm is connected with one end, far away from the variable frequency motor, of the fixed shaft;
The fixing seat is connected with one end, far away from the fixing shaft, of the fixing arm.
5. The concentrate powder dewatering device according to claim 3, wherein a slot is formed at an end of the drum connected to the inverter motor, and a motor shaft of the inverter motor is received in the slot.
6. the concentrate fines dewatering apparatus of claim 3, further comprising:
The base, inverter motor fixes on the base.
7. the concentrate fines dewatering apparatus of claim 1, wherein the temperature control of the cylindrical surface has a predetermined range, and wherein the predetermined range is between 150 ℃ and 500 ℃.
8. The concentrate fines dewatering apparatus of claim 1, wherein the cylinder is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910839282.7A CN110567260A (en) | 2019-09-05 | 2019-09-05 | Concentrate powder dewatering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910839282.7A CN110567260A (en) | 2019-09-05 | 2019-09-05 | Concentrate powder dewatering device |
Publications (1)
| Publication Number | Publication Date |
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| CN110567260A true CN110567260A (en) | 2019-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910839282.7A Pending CN110567260A (en) | 2019-09-05 | 2019-09-05 | Concentrate powder dewatering device |
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| CN (1) | CN110567260A (en) |
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| CN205332720U (en) * | 2015-12-30 | 2016-06-22 | 天津市万通圣达新能源科技发展有限公司 | Novel biomass fuel drying device |
| CN106421338A (en) * | 2016-09-27 | 2017-02-22 | 全椒先奇医药科技有限公司 | Liquid increasing granule and preparation method thereof |
| KR20180010413A (en) * | 2016-07-21 | 2018-01-31 | 김현경 | Roatary type Powder Drying Apparatus |
| CN107865898A (en) * | 2016-09-27 | 2018-04-03 | 全椒先奇医药科技有限公司 | The preparation method and vaccinium bracteatum thunb leaf pigment composition of a kind of vaccinium bracteatum thunb leaf pigment |
| CN108800882A (en) * | 2018-09-12 | 2018-11-13 | 贵州新天鑫化工有限公司 | A kind of remaining yellow phosphorus miberal powder drying unit of anti-material adhesion |
| CN208205756U (en) * | 2017-12-08 | 2018-12-07 | 武汉科技大学 | A kind of metal mining powder dryer |
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2019
- 2019-09-05 CN CN201910839282.7A patent/CN110567260A/en active Pending
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| CN205332720U (en) * | 2015-12-30 | 2016-06-22 | 天津市万通圣达新能源科技发展有限公司 | Novel biomass fuel drying device |
| KR20180010413A (en) * | 2016-07-21 | 2018-01-31 | 김현경 | Roatary type Powder Drying Apparatus |
| CN106421338A (en) * | 2016-09-27 | 2017-02-22 | 全椒先奇医药科技有限公司 | Liquid increasing granule and preparation method thereof |
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Application publication date: 20191213 |
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