CN2861173Y - Slag decomposing agent of steel-making dust slime sphere - Google Patents
Slag decomposing agent of steel-making dust slime sphere Download PDFInfo
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- CN2861173Y CN2861173Y CN 200520109462 CN200520109462U CN2861173Y CN 2861173 Y CN2861173 Y CN 2861173Y CN 200520109462 CN200520109462 CN 200520109462 CN 200520109462 U CN200520109462 U CN 200520109462U CN 2861173 Y CN2861173 Y CN 2861173Y
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- pellet
- pelletizing
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Abstract
The utility model relates to a steelmaking dust soil pellet, in particular to be applicable for being used as slagging agent, the composition of the utility model comprises steel-making dust soil, calces containing 2-6percent dust soil by weight, and binder containing 0.5-1percent dust soil by weight. The slagging agent of pellet is shaped of elliptical sphere, the length (L) and width (D) of pellet shall meet the formula L equal with 0.8D, the size of pellet is the following: length: width: thickness equal with 3-50:24-40:20-30mm. The pellet can reduce the abrasion and damage of the edge and corner of pellet and debase the Pulverization ratio of pellet. Also the utility model facilitates the conveyance of pellet slagging agent when feeding on the belt in the application of steel making so as to prevent pellet from rolling down along the belt and reduce the collision break during slide-down of pellet and improve production efficiency. Comparing with prior art, the utility model has the advantages of high strength pellet and low pulverization ratio.
Description
Technical field
The utility model relates to a kind of steel making dust slime pelletizing, is particularly suitable for being used as in process for making dissolving agent.
Background technology
The comprehensive utilization technique of present steel making dust slime, mainly be that steel making dust slime is processed into slag decomposing agent for smelting steel, return STEELMAKING PRODUCTION and use, show through process for making research and production application, steel making dust slime has cooling, changes effects such as slag, dephosphorization, desulfurization as slag decomposing agent for smelting steel.In the existing technology that steel making dust slime is processed into slag decomposing agent for smelting steel, mainly contain annular kiln sintering process and coal-pressing ball method, in general, the annular kiln sintering process need be equipped with the high temperature service and the extrusion equipment of even heating, its shortcoming is that investment is big, energy consumption height, the product needed behind the sintering just can be gone into the steel-making use after being broken into certain particle; The coal-pressing ball method is after being dried to steel making dust slime to a certain degree, behind various binding agents, carry out pressure ball, and then carry out nature and stack maintenance, make it to obtain certain intensity, the shortcoming of this technology be need be very big place and long maintenance, the pellet strength that is obtained, particularly hot strength is low, and pelletizing is the Pulverization ratio height in transit.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of steel making dust slime pelletizing as slag decomposing agent for smelting steel is provided, and this pelletizing has intensity height, characteristics that Pulverization ratio is low.
The purpose of this utility model is achieved in that
The utility model Steelsmelting dust-mud pelletizing slag-melting agent, its composition is the unslaked lime of steel making dust slime, dirt mud weight 2～6%, the binding agent of dirt mud weight 0.5～1%, described pelletizing dissolving agent be shaped as elliposoidal, pelletizing length (L) and width (D) satisfy L=0.8D, and pelletizing is of a size of length: wide: thick=30-50: 24-40: 20-30mm.
Manufacturing process of the present utility model is: with the steel making dust slime natural air drying; In the steel making dust slime raw material, add the unslaked lime of dirt mud weight 2～6%, the binding agent of dirt mud weight 0.5～1%, be mixed with the mixed once material; Mixed once material and the mixing of returns secondary are delivered to stirrer through conveyor, stir; The secondary compound is delivered to crushing mill through conveyor, fully pulverize, material particles reaches 0.05～0.15mm, and the secondary mixture moisture is 8～12% behind the rolling; The secondary compound is delivered to pelletizer through conveyor, and so that roll-in group mode is made green-ball, the group's of pressure pressure is 40～60KN; Green-ball is crossed vibratory screening apparatus, and green-ball is the finished product green-ball on the sieve, and sieve particle is down delivered to stirrer as returns; It is fixed that the finished product green-ball is delivered to shaft roasting through feeding system, and be 20～30 minutes warm up time, and preheating temperature is 550～700 ℃, roasting time is 25～35 minutes, maturing temperature is 900～1000 ℃, and the pelletizing behind the baking and concretion is a finished pellet, can be used as dissolving agent and is applied to STEELMAKING PRODUCTION.
The utility model Steelsmelting dust-mud pelletizing slag-melting agent be shaped as elliposoidal, in actual production and transportation, can reduce the wearing and tearing of pelletizing corner and the fragmentation of pelletizing, reduce the pelletizing Pulverization ratio, be convenient to pelletizing dissolving agent transporting during charge hoisting by belt conveyer in process for making is used simultaneously, prevent that pelletizing from tumbling downslide along belt, the collision fragmentation when reducing the pelletizing downslide improves the product lumber recovery; The pelletizing size is long: wide: thick 30 * 24 * 20mm～～50 * 40 * 30mm that is controlled at, can guarantee the ultimate compression strength of finished pellet, and can also improve its melting properties in steel-making is used simultaneously, strengthen result of use; Advantages such as the utility model pelletizing dissolving agent compared with prior art has the pellet strength height, and Pulverization ratio is low.
The utility model Main physical performance index are as follows:
| Bulk density g/cm 3 | Melting temperature ℃ | Finished pellet ultimate compression strength N/ | Finished pellet dropping strength index % | Water content % |
| 1.84 | 1260-1280 | 1640 | 93.1 | 0.5 |
Description of drawings
Fig. 1 is the diagrammatic cross-section of facing of utility model;
Fig. 2 is that diagrammatic cross-section is looked on the right side of Fig. 1.
Embodiment
Embodiment 1:
The utility model Steelsmelting dust-mud pelletizing slag-melting agent, its composition is the unslaked lime of steel making dust slime, dirt mud weight 2～6%, the binding agent of dirt mud weight 0.5～1%, described pelletizing dissolving agent be shaped as elliposoidal 1, pelletizing length 2 (L) and width 3 (D) satisfy L=0.8D, and pelletizing is of a size of long 2 * wide by 3 * thick 4=30 * 24 * 20mm.
Embodiment 2:
The utility model Steelsmelting dust-mud pelletizing slag-melting agent, its composition is the unslaked lime of steel making dust slime, dirt mud weight 2～6%, the binding agent of dirt mud weight 0.5～1%, described pelletizing dissolving agent be shaped as elliposoidal 1, pelletizing length 2 (L) and width 3 (D) satisfy L=0.8D, and pelletizing is of a size of long 2 * wide by 3 * thick 4=50 * 40 * 30mm.
Embodiment 3:
The utility model Steelsmelting dust-mud pelletizing slag-melting agent, its composition is the unslaked lime of steel making dust slime, dirt mud weight 2～6%, the binding agent of dirt mud weight 0.5～1%, described pelletizing dissolving agent be shaped as elliposoidal 1, pelletizing length 2 (L) and width 3 (D) satisfy L=0.8D, and pelletizing is of a size of long 2 * wide by 3 * thick 4=40 * 30 * 25mm.
Claims (4)
1, a kind of Steelsmelting dust-mud pelletizing slag-melting agent is characterized in that, described pelletizing dissolving agent be shaped as elliposoidal, pelletizing length (L) and width (D) satisfy L=0.8D, pelletizing is of a size of length: wide: thick=30-50: 24-40: 20-30mm.
2, Steelsmelting dust-mud pelletizing slag-melting agent according to claim 1 is characterized in that, described pelletizing is of a size of length * wide * thick=30 * 24 * 20mm.
3, Steelsmelting dust-mud pelletizing slag-melting agent according to claim 1 is characterized in that, described pelletizing is of a size of length * wide * thick=50 * 40 * 30mm.
4, Steelsmelting dust-mud pelletizing slag-melting agent according to claim 1 is characterized in that, described pelletizing is of a size of length * wide * thick=40 * 30 * 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109462 CN2861173Y (en) | 2005-06-08 | 2005-06-08 | Slag decomposing agent of steel-making dust slime sphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109462 CN2861173Y (en) | 2005-06-08 | 2005-06-08 | Slag decomposing agent of steel-making dust slime sphere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2861173Y true CN2861173Y (en) | 2007-01-24 |
Family
ID=37658798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520109462 Expired - Fee Related CN2861173Y (en) | 2005-06-08 | 2005-06-08 | Slag decomposing agent of steel-making dust slime sphere |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2861173Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074485A (en) * | 2013-02-06 | 2013-05-01 | 武汉科技大学 | Preparation method of oxidized pellets with coarse-grain hematite as main raw material |
| CN104946843A (en) * | 2014-03-25 | 2015-09-30 | 宝山钢铁股份有限公司 | Hot-rolled dedusting powder briquette as well as preparation method and application thereof |
-
2005
- 2005-06-08 CN CN 200520109462 patent/CN2861173Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074485A (en) * | 2013-02-06 | 2013-05-01 | 武汉科技大学 | Preparation method of oxidized pellets with coarse-grain hematite as main raw material |
| CN104946843A (en) * | 2014-03-25 | 2015-09-30 | 宝山钢铁股份有限公司 | Hot-rolled dedusting powder briquette as well as preparation method and application thereof |
| CN104946843B (en) * | 2014-03-25 | 2017-05-31 | 宝山钢铁股份有限公司 | A kind of hot rolling dust-removing powder pressure ball, Preparation Method And The Use |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070124 Termination date: 20140608 |