CN201330258Y

CN201330258Y - Skimmer

Info

Publication number: CN201330258Y
Application number: CNU2009203003646U
Authority: CN
Inventors: 蒋胜
Original assignee: Panzhihua Iron and Steel Group Corp; Pangang Group Research Institute Co Ltd; Panzhihua New Steel and Vanadium Co Ltd
Current assignee: Pangang Group Steel Vanadium and Titanium Co Ltd; Pangang Group Research Institute Co Ltd; Pangang Group Co Ltd
Priority date: 2009-01-21
Filing date: 2009-01-21
Publication date: 2009-10-21
Anticipated expiration: 2019-01-21

Abstract

The utility model discloses a skimmer, capable of effectively separating slag and iron. the skimmer includes a roughing runner sand bank and a slag trap locating on the front of a gully head, a gangway eye is arranged between the slag trap and a ditch bottom, a small well is arranged between the slag trap and a ditch head. the skimmer is provided with at least two ditch heads, a roughing runner sand bank and a slag trap are arranged on front of each ditch head. A draff ditch sand bank is arranged between the roughing runner sand bank and a slag trap of at least one ditch head, and the bottom position of the draff ditch sand bank is lower than that of the roughing runner sand bank. Based on the existing skimmer, the skimmer of the utility model is added with the ditch head and the corresponding roughing runner sand bank and the slag trap for a plurality of separation, which prolongs a detention period of the slag and the iron, and is benefit to separate the slag and the iron effectively; it is also separating the slag and the iron further by the draff ditch sand bank, so as to improve a separation effect of the slag and the iron greatly, the utility model is especially suitable for the separation of the slag and the iron when discharging the iron smelted by vanadium titanium magnetite in a blast furnace.

Description

Skimmer

Technical field

The utility model relates to smelts iron auxiliary facility, slag iron tripping device when particularly tapping a blast furnace before the State of Blast Furnace, skimmer in the technical field of ferrous metallurgy.

Background technology

At present, in ironmaking is produced, because therefore effusive slag iron density difference in the blast furnace, utilizes skimmer to realize that slag iron separates.

In the v-bearing titanomagnetite smelting, because of there being TiO ₂Cross the reduction problem, the height of furnace temperature directly has influence on the separating effect of slag iron.When furnace temperature was higher, most of slag is separated behind skimmer went out and flows in the slag ladle, but still had the small portion slag effectively not separated and flow in the iron ladle.Furnace temperature often fluctuates in the blast furnace, before now tying up to the ditch head of main iron hook roughing runner sand dam and skimming plate are set with skimmer, it between skimming plate and the bottom of trench passageway eye, be The Small Well between skimming plate and the ditch head, molten iron enters main iron hook behind skimming plate, most of slag flows in the slag ladle through roughing runner sand dam, and small part does not flow into iron ladle with the isolating slag of iron after by passageway eye and The Small Well.Because the general frequent fluctuation of blast furnace temperature, slag iron inferior separating effect often appears this moment, slag cooling hardening on the following iron ladle, also will bring a series of disadvantageous effects to back step operation such as desulfurization etc., have to it be broken the ability desulfurization with iron hammer, influenced normal desulfurization production, brought certain negative impact to organization of production.

Publication number be the Chinese patent of CN200967826 in disclosed a kind of compound skimmer on October 31st, 2007, solved substantially that the high temperature resistant molten iron of skimmer washes away, the problem of slag corrosion resistance.Publication number be the Chinese patent of CN2737800 in disclosed a kind of skimmer on November 2nd, 2005, prolonged the work-ing life of skimming plate, reduced labor strength.Above-mentioned skimmer all is to adopt one skimming plate skimming, particularly can not separate effectively for Ti-containing slag, slag iron often occurs and is regardless of phenomenon, causes molten iron loss and subsequent process tissue difficulty.Given this, await existing skimmer is improved.

The utility model content

In order to overcome the existing bad deficiency of skimmer slag iron separating effect, technical problem to be solved in the utility model provides a kind of skimmer that can effectively separate slag iron.

The technical scheme that its technical problem that solves the utility model adopts is: skimmer, be included in the roughing runner sand dam and the skimming plate that are provided with before the ditch head, it between skimming plate and the bottom of trench passageway eye, be The Small Well between skimming plate and the ditch head, described skimmer is provided with at least two ditch heads, is correspondingly provided with one roughing runner sand dam before each ditch head with skimming plate.

Wherein be provided with residue ditch sand dam between at least one ditch head pairing roughing runner sand dam and the skimming plate, the position is lower than position at the bottom of the dam on this roughing runner sand dam at the bottom of the dam on residue ditch sand dam.

The beneficial effects of the utility model are: set up ditch head and corresponding roughing runner sand dam and skimming plate on existing skimmer basis, carry out separating for several times, and prolonged the slag iron residence time, help effective separation of slag iron; Between roughing runner sand dam and skimming plate, also can be provided with residue ditch sand dam, further slag iron be separated, greatly improve slag iron separating effect, be particularly suitable for utilizing that slag iron separates when tapping a blast furnace before the State of Blast Furnace of v-bearing titanomagnetite smelting.

Description of drawings

Fig. 1 is a front view of the present utility model.

Be labeled as the 1-main iron hook among the figure; 2-roughing runner sand dam; The 3-skimming plate; 4-ditch head; 6-residue ditch sand dam; 9-props up iron runner; The 10-The Small Well; 11-passageway eye.

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified.

As shown in Figure 1, skimmer of the present utility model, be included in the roughing runner sand dam 2 and the skimming plate 3 that are provided with before the ditch head 4, it between skimming plate 3 and the bottom of trench passageway eye 11, be The Small Well 10 between skimming plate 3 and the ditch head 4, molten iron flows into main iron hook 1 behind the first road skimming plate 3, most of slag is in roughing runner sand dam, first road 2 inflow slag ladles, small part does not flow to the second road skimming plate 3 with the isolating slag of iron after by first passageway eye 11 and first The Small Well 10, and in roughing runner sand dam, second road 2 and residue ditch sand dam 6 inflow slag ladles, after slag in the molten iron was further separated, molten iron flowed into an iron runner 9 behind second passageway eye 11 and second The Small Well 10.The utility model has greatly reduced the band quantity of slag in the iron ladle, helps the tissue production of steel making working procedure, and has reduced the molten iron loss.

When needing, roughing runner sand dam, the 3rd road, the second road skimming plate and the 3rd ditch head can be set behind second ditch head 4 also again ...Residue ditch sand dam 6 operated by rotary motion are one roughing runner sand dam and at last together between the skimming plate in the end, and the position is lower than position at the bottom of the dam on last one roughing runner sand dam at the bottom of the dam on residue ditch sand dam.

Claims

1. skimmer, be included in the roughing runner sand dam (2) and the skimming plate (3) of the preceding setting of ditch head (4), between skimming plate (3) and the bottom of trench passageway eye (11), be The Small Well (10) between skimming plate (3) and the ditch head (4), it is characterized in that: described skimmer is provided with at least two ditch heads (4), and each ditch head (4) is preceding to be correspondingly provided with one roughing runner sand dam (2) and skimming plate (3) together.

2. skimmer as claimed in claim 1, it is characterized in that: wherein be provided with residue ditch sand dam (6) between at least one ditch head (4) pairing roughing runner sand dam (2) and the skimming plate (3), the position is lower than position at the bottom of the dam on this roughing runner sand dam (2) at the bottom of the dam on residue ditch sand dam (6).