CN205027330U - Device for measuring thickness of slag at top of steel ladle - Google Patents
Device for measuring thickness of slag at top of steel ladle Download PDFInfo
- Publication number
- CN205027330U CN205027330U CN201520743849.8U CN201520743849U CN205027330U CN 205027330 U CN205027330 U CN 205027330U CN 201520743849 U CN201520743849 U CN 201520743849U CN 205027330 U CN205027330 U CN 205027330U
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- CN
- China
- Prior art keywords
- slag
- steel pipe
- tinsel
- steel
- molten steel
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Abstract
The utility model relates to a device for measuring thickness of slag at top of steel ladle, include: steel pipe, first wire, second wire, steel pipe cover, wherein, the inside at the steel pipe is fixed through first fixed bolster to first wire, the second wire passes through the second fixed bolster and fixes the outside at the steel pipe, first wire and second wire all with the axis of steel pipe is parallel, the front end at the steel pipe is installed to the steel pipe cover.
Description
Technical field
The utility model belongs to technical field of ferrous metallurgy, specifically, relates to a kind of device measuring thickness of slag at top of steel ladle.
Background technology
In steel making working procedure, the band quantity of slag and the steel making operation technique of molten steel are closely bound up, and the stable smooth operation of the band quantity of slag to STEELMAKING PRODUCTION accurately measuring molten steel is extremely important, and the band quantity of slag detecting molten steel at present generally adopts surveys the thick method of slag.In the prior art, a kind of method utilizes the different temperatures of molten steel and slag thick to survey slag.Publication number is that the Chinese patent application of CN102384731A discloses following content separately with the Chinese patent application that publication number is CN102397999A: inserted in molten steel by metals different for two kinds of fusing points simultaneously, because molten steel is different with the temperature of slag, molten steel and slag melt this two kinds of metals respectively, then the length of the not molten part of these two kinds of metals is measured, get difference, be slag slag thick, but owing to having thermograde between slag and molten steel, temperature is reduce gradually along molten steel-slag interface-slag, with the difference of the time of insertion, the fusing position of refractory metal is not necessarily on slag-molten steel interface, fluctuate up and down at slag interface in fusing position, this brings certain error to measurement result, and the burn-off rate of refractory metal is generally slow, need insert the molten steel long period could melt, make troubles to operation.A kind of conductance utilizing slag different with molten steel is also disclosed to measure the thick method of slag in prior art.Publication number is that an electrode constantly declined inserts in slag by the Chinese patent application of CN1196479, measure its dropping distance and the situation of change of conductance, conductance position jumpy is slag-Air Interface and slag-molten steel interface, it is thick that distance between these two positions is slag, but this method equipment manufacturing cost is expensive, and the maintenance cost of equipment is also higher.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of device of accurate measurement thickness of slag at top of steel ladle.
To achieve these goals, the utility model provides a kind of device measuring thickness of slag at top of steel ladle, comprising: steel pipe 1, first tinsel 2, second tinsel 3, steel pipe socket 4; Wherein, described first tinsel 2 is fixed on the inside of steel pipe 1 by the first fixed support 5, and described second tinsel 3 is fixed on the outside of steel pipe 1 by the second fixed support 6, described first tinsel 2 and the second tinsel 3 all with the axis being parallel of described steel pipe 1; Described steel pipe socket 4 is arranged on the front end of steel pipe 1.
In technique scheme, described first tinsel 2 adopts fusing point to make lower than the metal material of 1000 DEG C.
In technique scheme, described second tinsel 3 adopts fusing point to make lower than the metal of 400 DEG C.
In technique scheme, the shape of described steel pipe socket 4 is taper.
The utility model tool has the following advantages:
(1) the first tinsel 2, second tinsel 3 in the device of measurement thickness of slag at top of steel ladle of the present utility model contacts with molten steel with slag respectively, accurately can measure the height in slag and molten steel face, avoid the thermograde of molten steel-slag interface-slag, can reduce and measure the thick error of slag.
(2), in the device of measurement thickness of slag at top of steel ladle of the present utility model, owing to there being steel pipe socket 4 to strut slag, the first tinsel 2 can disturb from slag, detects the liquid level of molten steel accurately.
(3) the first tinsel 2 fusing point that steel duct is fixing is very low, can be slag melting rapidly; Second tinsel 3 fusing point of steel pipe external stability is lower, can be melted by molten steel rapidly; The survey slag thick time used is shortened, reduces labor strength.
(4) steel pipe socket 4 is detachable, and material is cheap, and processing technology is simple; Steel pipe is reusable.
Accompanying drawing explanation
Fig. 1 is the structural representation of measurement thickness of slag at top of steel ladle device of the present utility model;
Fig. 2 is the schematic diagram in measurement thickness of slag at top of steel ladle measurement device thickness of slag at top of steel ladle process of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
With reference to figure 1, the device of measurement thickness of slag at top of steel ladle of the present utility model comprises: steel pipe 1, first tinsel 2, second tinsel 3, steel pipe socket 4; Wherein, described first tinsel 2 is fixed on the inside of steel pipe 1 by the first fixed support 5, and described second tinsel 3 is fixed on the outside of steel pipe 1 by the second fixed support 6, described first tinsel 2 and the second tinsel 3 all with the axis being parallel of described steel pipe 1; Described steel pipe socket 4 is arranged on the front end of steel pipe 1.
Below all parts in this device is described further.
Described first tinsel 2 adopts fusing point to make, as copper, aluminium, lead, tin etc. lower than the metal material of 1000 DEG C.In one embodiment, described first tinsel 2 adopts copper wire to make.The length of described first tinsel 2 should ensure that the device of measurement thickness of slag at top of steel ladle of the present utility model is when operating, and described first tinsel 2 can touch molten steel.
Described second tinsel 3 adopts fusing point to make, as lead, tin etc. lower than the metal of 400 DEG C.In one embodiment, described second tinsel 3 adopts galvanized wire to make.The length of described second tinsel 3 should ensure that the device of measurement thickness of slag at top of steel ladle of the present utility model is when operating, and described second tinsel 3 can touch molten steel.
Described steel pipe socket 4 adopts to be had some strength, has the material of certain fire resistance and make, as cardboard, plastics etc.The shape of described steel pipe socket 4 can be taper, and be beneficial to device of the present utility model when inserting molten steel, steel pipe socket 4 can strut the slag at ladle top and can not burn.
The method of the measurement device thickness of slag at top of steel ladle of measurement thickness of slag at top of steel ladle of the present utility model is just adopted to be described below.
Step 1), measure distance h between the point of fixity of the first tinsel 2 and the point of fixity of the second tinsel 3
1;
Step 2), thick for survey slag of the present utility model device is inserted in molten steel, in this course, steel pipe socket 4 enters molten steel after breaking slag, is then burnt by molten steel rapidly at short notice, and molten steel enters in steel pipe 1 under the pressure of air and slag; Molten steel melts away the first tinsel 2 contacted with molten steel, slag melting the second tinsel 3 falling to contact with slag;
Step 3), steel pipe mentions after inserting molten steel 3 ~ 4 second immediately, then measures the distance h between the fixed position of the first tinsel 2 and its fusing position respectively
2, the distance between the fixed position of the second tinsel 3 and its fusing position is h
3; Calculate the liquid level difference of molten steel and the outer slag of steel pipe 1 in steel pipe 1.
Suppose that the liquid level difference of molten steel and the outer slag of steel pipe 1 in steel pipe 1 is h
4, with reference to figure 2, following formulae discovery can be adopted:
h
4＝h
2-h
1-h
3；
Step 4), calculate the lifting height of molten steel in steel pipe 1;
If due to the static pressure of slag, in steel pipe 1, molten steel lifting height is h
5, obtain following formula according to pressure equilibrium equation:
ρ
slag* (h
4+ h
5)=ρ
molten steel* h
5;
This formula is changed, is obtained:
Wherein, ρ
slagrepresenting the density of slag, obtaining by measuring; ρ
molten steelrepresenting the density of molten steel, obtaining by measuring.
Step 5), by step 3) liquid level difference, the step 4 of molten steel and the outer slag of steel pipe 1 in the steel pipe 1 that calculates) lifting height of molten steel is added in the steel pipe 1 that calculates, obtains slag slag thick.
Suppose that slag slag is thick in h
6, obtain following formula according to Fig. 2:
Slag slag is thick is:
In one embodiment, make a survey ladle top slag device as shown in Figure 1, first tinsel 2 is drawn materials as copper wire, second tinsel 3 is drawn materials as galvanized wire, surveying the thick pre-test of the slag distance gone out between copper wire point of fixity and galvanized wire point of fixity is 250mm, in steel pipe front portion, a dismountable steel pipe socket 4 is installed, steel pipe socket 4 draw materials as hardboard, surveying the thick device of slag inserts in molten steel process, steel pipe socket 4 breaks slag, survey the thick device of slag insert molten steel 1 second after steel pipe socket 4 burnt by molten steel rapidly, molten steel enters in steel pipe due to the pressure of air and slag, molten steel melts away the copper wire with steel contacts, the slag melting galvanized wire falling to contact with slag, steel pipe insertion molten steel 3 is mentioned after second immediately, the distance measured between copper wire fixed position and fusing position is 515mm, the distance measured between galvanized wire fixed position and fusing position is 220mm, in steel pipe, the liquid level difference of molten steel and the outer slag of steel pipe is h
4, computing formula is:
h
4＝h
2-h
1-h
3＝45mm
If slag slag is thick is h
6, get the density p of slag
slagfor 3.45g/cm
3, get molten steel density p
molten steelfor 7.8g/cm
3utilize computing formula after above slag slag, and substitute into h
4=45mm:
Slag slag is thick is:
It should be noted last that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted.Although be described in detail the utility model with reference to embodiment, those of ordinary skill in the art is to be understood that, the technical solution of the utility model is modified or equivalent replacement, do not depart from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (4)
1. measure a device for thickness of slag at top of steel ladle, it is characterized in that, comprising: steel pipe (1), the first tinsel (2), the second tinsel (3), steel pipe socket (4); Wherein, described first tinsel (2) is fixed on the inside of steel pipe (1) by the first fixed support (5), described second tinsel (3) is fixed on the outside of steel pipe (1) by the second fixed support (6), described first tinsel (2) and the second tinsel (3) all with the axis being parallel of described steel pipe (1); Described steel pipe socket (4) is arranged on the front end of steel pipe (1).
2. the device of measurement thickness of slag at top of steel ladle according to claim 1, is characterized in that, described first tinsel (2) employing fusing point is made lower than the metal material of 1000 DEG C.
3. the device of measurement thickness of slag at top of steel ladle according to claim 1, is characterized in that, described second tinsel (3) employing fusing point is made lower than the metal of 400 DEG C.
4. the device of measurement thickness of slag at top of steel ladle according to claim 1, is characterized in that, the shape of described steel pipe socket (4) is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743849.8U CN205027330U (en) | 2015-09-23 | 2015-09-23 | Device for measuring thickness of slag at top of steel ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743849.8U CN205027330U (en) | 2015-09-23 | 2015-09-23 | Device for measuring thickness of slag at top of steel ladle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205027330U true CN205027330U (en) | 2016-02-10 |
Family
ID=55259853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520743849.8U Expired - Fee Related CN205027330U (en) | 2015-09-23 | 2015-09-23 | Device for measuring thickness of slag at top of steel ladle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205027330U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136090A (en) * | 2015-09-23 | 2015-12-09 | 山东钢铁股份有限公司 | Device for measuring thickness of steel ladle top slag and method |
-
2015
- 2015-09-23 CN CN201520743849.8U patent/CN205027330U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136090A (en) * | 2015-09-23 | 2015-12-09 | 山东钢铁股份有限公司 | Device for measuring thickness of steel ladle top slag and method |
| CN105136090B (en) * | 2015-09-23 | 2018-08-14 | 山东钢铁股份有限公司 | A kind of device and method measuring thickness of slag at top of steel ladle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160210 Termination date: 20170923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |