CN106440782A - Rotary hearth furnace - Google Patents
Rotary hearth furnace Download PDFInfo
- Publication number
- CN106440782A CN106440782A CN201611046062.1A CN201611046062A CN106440782A CN 106440782 A CN106440782 A CN 106440782A CN 201611046062 A CN201611046062 A CN 201611046062A CN 106440782 A CN106440782 A CN 106440782A
- Authority
- CN
- China
- Prior art keywords
- rotary hearth
- thermocouple
- hearth furnace
- conductive
- furnace
- 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.)
- Pending
Links
Classifications
-
- 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
- F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0066—Preliminary conditioning of the solid carbonaceous reductant
-
- 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
- F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
- F27B13/06—Details, accessories, or equipment peculiar to furnaces of this type
- F27B13/12—Arrangements of heating devices
-
- 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
- F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
- F27B13/06—Details, accessories, or equipment peculiar to furnaces of this type
- F27B13/14—Arrangement of controlling, monitoring, alarm or like devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/16—Treatment involving a chemical reaction
- F27M2003/165—Reduction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention relates to a rotary hearth furnace. The rotary hearth furnace comprises a furnace body, a furnace bottom, a temperature measuring device and a combustor, wherein the furnace body is provided with a feeding hole and a discharging hole; the cross section of the furnace body is in a circular ring shape; the furnace bottom is circular-ring-shaped in appearance; an annular reaction space is defined by the inner ring sidewall and the outer ring sidewall of the furnace body and the upper surface of the furnace bottom; the temperature measuring device is mounted at the furnace bottom; a temperature measuring end of the temperature measuring device is placed in the reaction space; the combustor is mounted on the sidewall of the furnace body. By arranging the temperature measuring device in the reaction space of the rotary hearth furnace, the rotary hearth furnace provided by the invention is capable of accurately measuring the actual temperature of a material so as to control the actual temperature of the material to be optimal, so a good reaction effect can be achieved.
Description
Technical field
Present invention relates generally to reacting furnace, and in particular to a kind of rotary hearth furnace.
Background technology
High-temperature ring rotary hearth furnace is wide variety of new rotary hearth furnace in the world, is mainly used in 1400 DEG C of carbon containings of steel industry
Pellet roasting or the 1600 DEG C of nonmetallic materials roastings of space flight industry or 1200 DEG C of electromotor steel bushing hot jacket heating of automobile industry, and
Other metallurgy industries etc..
Conventional rotary hearth furnace Direct Reduction Technology is Iron Ore Powder (or lateritic nickel ore, vanadium titano-magnetite, sulfate slag or metallurgical powder
Dirt, dedusting ash, steel-smelting sewage sludge etc.) it is added to annular furnace and can through dispensing, batch mixing, ball processed and dried carbonaceous pelletizing
In the rotary hearth furnace of the furnace bottom of rotation, under 1350 DEG C or so fire box temperatures, during rotating a circle with furnace bottom, iron mine quilt
Carbon is reduced.
The reduction rotary hearth furnace equipment temperature control for adopting at present generally is poor, it is impossible to accurately measure the actual temperature of material, only with
The temperature of combustion flame or furnace roof flue gas is measured, to be controlled operation to system, thus the actual temperature of reaction mass is also only
Can be manipulated according to Empirical.As the nature difference of different material is larger, by virtue of experience operation is it cannot be guaranteed that material
Actual reduction temperature is in most preferably, and reduction effect is not good.
Moreover, rotary hearth furnace because the rotation of furnace bottom, thus mounted thereon temperature measuring equipment and reading numerical values have very big tired
Difficulty, practical operation is difficult to realize, thus rarely has the report of the actual material thermometry of rotary hearth furnace at present.And the control of furnace temperature can be straight
The generation quality of impact reactant is connect, thus the measurement of temperature has large effect with control to rotary hearth furnace.
Therefore, in order to the actual temperature of accurately measurement material, it is in most preferably so as to the actual temperature of control material,
So that reaction effect is good, it is necessary to propose a kind of new rotary hearth furnace with temp sensing function.
Content of the invention
It is an object of the invention to provide a kind of rotary hearth furnace, can accurately measure the actual temperature of material, can control material
Actual temperature in optimal so that in rotary hearth furnace, material reaction effect is good.
The invention provides a kind of rotary hearth furnace, the rotary hearth furnace includes body of heater, furnace bottom, temperature measuring equipment and burner, wherein,
The body of heater is provided with feeding mouth, discharging opening, and the body of heater cross section is annular shape；The furnace bottom is in circular profile；Described
The inside and outside ring-side wall of body of heater limits annular reaction space with the upper surface of the furnace bottom；The temperature measuring equipment is installed on described
Furnace bottom, the thermometric end of the temperature measuring equipment is placed in the reaction compartment；The burner is installed on the side wall of the body of heater.
Above-mentioned rotary hearth furnace, the temperature measuring equipment includes thermocouple, conductive wheel track group；The thermocouple is used as the thermometric
The thermometric end of device, its top is higher than the furnace bottom, and positive and negative electrode compensating wire is drawn in its bottom；The conduction wheel track group
Including conductive casters, conductor rail, attachment means；The conductor rail includes positive conductive rail and negative conductive rail, the positive conductive
Rail and negative conductive rail interval are installed on ring-side wall in the body of heater outside the reaction compartment, are all along the circumferential direction covered with one
Circle；The conductive casters includes positive conductive wheel and negative conductive wheel, and the positive conductive wheel connects the positive pole of the thermocouple and mends
Repay wire and be movably placed on the positive conductive rail；The negative conductive wheel connects the negative pole compensating wire of the thermocouple simultaneously
It is movably placed on the negative conductive rail；The attachment means include positive pole attachment means and negative pole attachment means, the positive pole
Attachment means are wrapped in outside the positive pole compensating wire of the thermocouple, and are connected with positive conductive wheel insulation；The negative pole
Attachment means are wrapped in outside the negative pole compensating wire of the thermocouple, and are connected with negative conductive wheel insulation.
Further, in above-mentioned rotary hearth furnace, the contact surface of the conductor rail and the conductive casters is in the throwing of longitudinal cross-section
Shadow is circular curve.
Further, part of the attachment means Wei Yu the thermocouple and the conductive casters between turns bottom located at described
In stove furnace bottom.
Above-mentioned rotary hearth furnace, the thermocouple can be the multiple thermocouples being uniformly arranged along the ring direction of the furnace bottom
Monomer, each described thermocouple monomer corresponds to a conduction wheel track group, is independently arranged between the conduction wheel track group.
Further, the quantity of the thermocouple can be 4-12.
Above-mentioned rotary hearth furnace, is cased with heat-resisting sleeve outside the thermocouple, and the heat-resisting sleeve is from the thermocouple top
Rise and extend down in the rotary furnace bottom.
Further, the heat-resisting sleeve can be higher by the furnace bottom 10-15mm.
Above-mentioned rotary hearth furnace, the burner is heat-storage type burner.
Above-mentioned rotary hearth furnace, is mounted on the burner on the lateral wall of the body of heater with medial wall.
The beneficial effects of the present invention is, the rotary hearth furnace of temperature measuring equipment is provided with this kind of reaction compartment, accurately can be measured
The actual temperature of material, the actual temperature of energy control material is in optimal so that in rotary hearth furnace, material reaction effect is good.
Description of the drawings
Fig. 1 is longitudinal cross-sectional schematic of rotary hearth furnace of the present invention；
Longitudinal half-section diagram of Fig. 2 rotary hearth furnace of the present invention；
Fig. 3 is the conductive wheel track group longitudinal direction cross-sectional schematic of rotary hearth furnace of the present invention；And
Fig. 4 is the conductive wheel track group schematic top plan view of rotary hearth furnace of the present invention.
Specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in more details, so as to energy
The advantage of the solution of the present invention and its various aspects is enough more fully understood.However, specific embodiments described below and reality
It is only descriptive purpose to apply example, rather than limitation of the present invention.
In the present invention, unless otherwise clearly defined and limited, term " being connected " or " connection " should be interpreted broadly, example
Such as, can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can
To be the connection of two element internals or the interaction relationship of two elements, unless otherwise clearly restriction.For this area
Those of ordinary skill for, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
As shown in figure 1, a kind of rotary hearth furnace of the present invention, rotary hearth furnace mainly includes body of heater, furnace bottom, temperature measuring equipment and burning
Device.Body of heater is annular shape, constitutes reduction space with internal annular shape furnace bottom, and temperature measuring equipment is arranged on furnace bottom.Body of heater be provided with into
Material mouth, discharging opening, inside and outside body of heater, ring-side wall is provided with burner, heat-storage type burner.Material is distributed into stove from rotary hearth furnace feeding mouth
Bottom, heat-storage type burner burning fuel makes to keep uniform temperature in stove, and furnace bottom rotates one and encloses, and makes material through not equality of temperature in stove
Discharged by discharging opening after degree.Period, temperature measuring equipment accurately measures the actual temperature of material in real time so that system can adjust storage in time
The combustion parameter of hot type burner, makes material all the time in optimal reaction temperature, and reaction effect is good.
Specifically, as shown in Fig. 2 burner 1 is located on the outboard sidewalls of rotary hearth furnace.Described temperature measuring equipment is by thermocouple
2nd, conductive wheel track group 3 constitutes, to realize the real-time measurement of furnace bottom material actual temperature when rotary hearth furnace is rotated.Temperature measuring equipment can be along stove
The equidistant installation in bottom, quantity can be 4-12, preferably 8.
Thermocouple is used as the thermometric end of the temperature measuring equipment, and its top is higher than the furnace bottom, and its bottom is drawn positive and negative
Pole compensating wire.
Further, as shown in Figure 3, Figure 4, described conductive wheel track group 3 is by conductive casters 3-1, conductor rail 3-2, connection dress
Put 3-3 composition.
Further, as shown in figure 3, the conductor rail 3-2 includes positive conductive rail and negative conductive rail, the positive pole is led
Electric rail and negative conductive rail interval are installed on ring-side wall in the body of heater outside the reaction compartment, are all along the circumferential direction covered with one
Circle.
The conductive casters 3-1 includes positive conductive wheel and negative conductive wheel, and the positive conductive wheel connects the thermocouple
Positive pole compensating wire and be movably placed on the positive conductive rail；The negative conductive wheel connects the negative pole of the thermocouple and mends
Repay wire and be movably placed on the negative conductive rail.Conductive casters 3-1 and conductor rail 3-2 are respectively provided with conducting function.Thermocouple
The compensated wire of the signal of telecommunication is conducted to conductive casters, and conductive casters reaches conductor rail again, and conductor rail connection reading instrument can measure thing
The actual temperature of material.
Each conductor rail 3-2 ring along rotary hearth furnace body is covered with a circle, and therefore each conductive casters 3-1 can be along respective
Conductor rail 3-2 circular motion, rotated with the rotation with rotary hearth furnace, it is to avoid lead on temperature measuring equipment when rotary hearth furnace is rotated
Winding.
Projection Design that can be by the contact surface of conductor rail and the conductive casters in longitudinal cross-section is circular curve.Certainly this
It is not required, is such as also designed to U-shaped curve or straight line.
Attachment means 3-3 include positive pole attachment means and negative pole attachment means, and the positive pole attachment means are wrapped in
Outside the positive pole compensating wire of the thermocouple, and it is connected with positive conductive wheel insulation；The negative pole attachment means are wrapped in
Outside the negative pole compensating wire of the thermocouple, and it is connected with negative conductive wheel insulation.
Thermocouple 2 is connected by described attachment means 3-3 with conductive casters 3, attachment means 3-3 imbed furnace bottom, with heat-resisting,
Protective effect.
Heat-resisting sleeve is placed on outside thermocouple from the top one of thermocouple up to the bottom of thermocouple, and can be imbedded in bottom
Rotary furnace bottom.Sleeve pipe stretches out furnace bottom 10-15mm and is advisable, to protect the thermocouple from mechanical damage during material turnover.
Additionally, the rotary hearth furnace of the present invention, the burner can be heat-storage type burner.
The present invention is the rotary hearth furnace for being provided with temperature measuring equipment in reaction compartment, can accurately measure the actual temperature of material,
The actual temperature of energy control material is in optimal so that in rotary hearth furnace, material reaction effect is good.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the field, can also do on the basis of the above description
Go out change or the variation of other multi-forms.There is no need to be exhaustive to all of embodiment.And thus drawn
Obvious change or change among still in protection scope of the present invention that Shen goes out.
Claims (10)
1. a kind of rotary hearth furnace, the rotary hearth furnace includes body of heater, furnace bottom, temperature measuring equipment and burner, wherein,
The body of heater is provided with feeding mouth, discharging opening, and the body of heater cross section is annular shape；
The furnace bottom is in circular profile；
The inside and outside ring-side wall of the body of heater limits annular reaction space with the upper surface of the furnace bottom；
The temperature measuring equipment is installed on the furnace bottom, and the thermometric end of the temperature measuring equipment is placed in the reaction compartment；
The burner is installed on the side wall of the body of heater.
2. rotary hearth furnace according to claim 1, it is characterised in that the temperature measuring equipment includes thermocouple, conductive wheel track group；
The thermocouple is used as the thermometric end of the temperature measuring equipment, and its top is higher than the furnace bottom, and its bottom is drawn positive and negative
Pole compensating wire；
The conduction wheel track group includes conductive casters, conductor rail, attachment means；
The conductor rail includes positive conductive rail and negative conductive rail, the positive conductive rail and negative conductive rail interval peace
Ring-side wall in body of heater outside loaded on the reaction compartment, is all along the circumferential direction covered with a circle；
The conductive casters includes positive conductive wheel and negative conductive wheel, and the positive conductive wheel connects the positive pole of the thermocouple and mends
Repay wire and be movably placed on the positive conductive rail；The negative conductive wheel connects the negative pole compensating wire of the thermocouple simultaneously
It is movably placed on the negative conductive rail；
The attachment means include positive pole attachment means and negative pole attachment means, and the positive pole attachment means are wrapped in the thermoelectricity
Outside even positive pole compensating wire, and it is connected with positive conductive wheel insulation；The negative pole attachment means are wrapped in the thermoelectricity
Outside even negative pole compensating wire, and it is connected with negative conductive wheel insulation.
3. rotary hearth furnace according to claim 2, it is characterised in that the contact surface of the conductor rail and the conductive casters is vertical
Circular curve is projected as to section.
4. rotary hearth furnace according to claim 2, it is characterised in that the attachment means are led with described positioned at the thermocouple
Part between electricity wheel is in the rotary furnace bottom.
5. rotary hearth furnace according to claim 2, it is characterised in that the thermocouple be along the ring direction of the furnace bottom
The multiple thermocouple monomers being uniformly arranged, each described thermocouple monomer corresponds to a conduction wheel track group, the conductive casters
It is independently arranged between rail group.
6. rotary hearth furnace according to claim 5, it is characterised in that the quantity of the thermocouple is 4-12.
7. rotary hearth furnace according to claim 2, it is characterised in that be cased with heat-resisting sleeve outside the thermocouple, described resistance to
Thermal sleeve is extended down in the rotary furnace bottom from the thermocouple top.
8. rotary hearth furnace according to claim 7, it is characterised in that the heat-resisting sleeve is higher by the furnace bottom 10-15mm.
9. rotary hearth furnace according to claim 1, it is characterised in that the burner be.
10. rotary hearth furnace according to claim 1, it is characterised in that all pacify on the lateral wall of the body of heater with medial wall
Equipped with the burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046062.1A CN106440782A (en) | 2016-11-22 | 2016-11-22 | Rotary hearth furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046062.1A CN106440782A (en) | 2016-11-22 | 2016-11-22 | Rotary hearth furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106440782A true CN106440782A (en) | 2017-02-22 |
Family
ID=58218010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611046062.1A Pending CN106440782A (en) | 2016-11-22 | 2016-11-22 | Rotary hearth furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106440782A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0976843A1 (en) * | 1998-03-25 | 2000-02-02 | LTV Steel Company, Inc. | Treatment of steel plant waste metal oxides by firing the same in the form of coke containing briquettes |
| CN2529227Y (en) * | 2002-03-04 | 2003-01-01 | 曾令可 | Device for measuring variation of dynamic temp. of wide cross-section furnace intersecting surface |
| CN2875653Y (en) * | 2006-02-11 | 2007-03-07 | 湖北三环锻造有限公司 | Rotary bottom forging heating furnace |
| CN203965061U (en) * | 2014-06-24 | 2014-11-26 | 攀枝花学院 | At the bottom of movable hearth furnace/use down inserting type wireless temperature measurement system at the bottom of car |
| CN206257957U (en) * | 2016-11-22 | 2017-06-16 | 江苏省冶金设计院有限公司 | A kind of rotary hearth furnace |
-
2016
- 2016-11-22 CN CN201611046062.1A patent/CN106440782A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0976843A1 (en) * | 1998-03-25 | 2000-02-02 | LTV Steel Company, Inc. | Treatment of steel plant waste metal oxides by firing the same in the form of coke containing briquettes |
| CN2529227Y (en) * | 2002-03-04 | 2003-01-01 | 曾令可 | Device for measuring variation of dynamic temp. of wide cross-section furnace intersecting surface |
| CN2875653Y (en) * | 2006-02-11 | 2007-03-07 | 湖北三环锻造有限公司 | Rotary bottom forging heating furnace |
| CN203965061U (en) * | 2014-06-24 | 2014-11-26 | 攀枝花学院 | At the bottom of movable hearth furnace/use down inserting type wireless temperature measurement system at the bottom of car |
| CN206257957U (en) * | 2016-11-22 | 2017-06-16 | 江苏省冶金设计院有限公司 | A kind of rotary hearth furnace |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |
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| WD01 | Invention patent application deemed withdrawn after publication |