CN206069915U - Prevent the blast-melted skimming device with slag - Google Patents

Abstract

This utility model is related to blast furnace process, and disclosing a kind of prevents the blast-melted skimming device with slag.The skimming device includes mop and pushing off the slag nest, pushing off the slag nest is arranged at trough leading portion, the mop is T-shaped structure, the pushing off the slag nest both sides offer the groove being adapted with mop both sides, in the groove of the embedded pushing off the slag nest both sides of the mop, the lower end boss end of the mop is higher than pushing off the slag nest front end edge.Molten iron is Jing after original slag skimmer slag sluicing system, slag sluicing system is carried out again by the skimming device, the slag for floating on molten iron face is filtered by slag skimmer, the molten iron band quantity of slag is reduced, the blast-melted band quantity of slag can drop to 2 ‰, and the straight exchange rate of hot metal in steelmaking rises to 98%, steel-making is saved after receiving molten iron and pulls out the slag time, steelmaking operations efficiency is effectively improved, is prevented from pulling out the molten iron thermal loss that slag is taken away, is reduced smelting cost.

Description

Prevent the blast-melted skimming device with slag

Technical field

This utility model is related to blast furnace process, especially a kind of to prevent the blast-melted skimming device with slag.

Background technology

In blast furnace process field, blast-melted Jing slag skimmer realizes slag sluicing system, molten iron Jing sand dam 2, sand lock 3, big lock 4, Passageway eye 5, The Small Well 6, trough flow into hot-metal bottle, and slag Jing sand dam 2, slag runner flows into slag ladle or becomes flush slag, 6 bottom of The Small Well Residual ferrum eye 7 is set.Although separate through slag skimmer to realize slag sluicing system, blast furnace is in molten iron temperature height, slag viscosity Some slag is understood in the case of big molten iron band slag is caused with molten iron inflow hot-metal bottle.Especially under schreyerite smelting condition, Slag viscosity is big, the poor smelting characteristic of slag sluicing system effect, and molten iron band slag phenomenon is more.Once blast-melted band slag can increase Steel making working procedure is pulled out the slag time, reduce steelmaking operations efficiency, while cause molten iron during slag is pulled out temperature drop and make molten iron heat Amount, metal loss are substantially increased.

Utility model content

Technical problem to be solved in the utility model be to provide it is a kind of prevent the blast-melted skimming device with slag, with this Reduce molten iron with the quantity of slag and molten iron without slag purpose.

The blast-melted skimming device with slag, including mop and pushing off the slag nest are prevented disclosed in this utility model, it is described Pushing off the slag nest is arranged at trough leading portion, and the mop is T-shaped structure, and the pushing off the slag nest both sides offer and mop two The groove that side is adapted, in the groove of the embedded pushing off the slag nest both sides of the mop, the lower end boss end of the mop End is higher than pushing off the slag nest front end edge.

Preferably, 1.5 times for trough width of the mop upper boss width, lower lobes position width are nest 1-1.2 times of sub- width.

Preferably, pushing off the slag nest is arranged at trough leading portion apart from the position of The Small Well 2-4m.

Preferably, 50-100mm below molten iron level is goed deep in the mop lower end boss end.

Preferably, the mop includes the castable of the shell and inside the shell made by steel plate.

Preferably, the thickness of the shell is 0.2-0.3m.

It is of the present utility model to prevent the blast-melted skimming device with slag to be arranged at trough leading portion, the original skimmings of molten iron Jing After device slag sluicing system, slag sluicing system is carried out again by skimming device of the present utility model, the slag for floating on molten iron face is filtered by slag skimmer Remove, reduce the molten iron band quantity of slag, the blast-melted band quantity of slag can drop to 2 ‰, and the straight exchange rate of hot metal in steelmaking rises to 98%, and steel-making receives Save after molten iron and pull out the slag time, effectively improve steelmaking operations efficiency, prevent from pulling out the molten iron thermal loss that slag is taken away, reduce smelting Cost.

Description of the drawings

Fig. 1 is the schematic diagram of the stokehold slag sluicing system system comprising original slag skimmer；

Fig. 2 is the schematic diagram of skimming device of the present utility model；

Fig. 3 is the top view of skimming device；

Fig. 4 is the sectional view of mop.

Reference：Trough 1, sand dam 2, sand lock 3, big lock 4, passageway eye 5, The Small Well 6, residual ferrum eye 7, mop 8, pushing off the slag Nest 9.

Specific embodiment

Below in conjunction with the accompanying drawings this utility model is further illustrated.

As shown in Figure 1 and Figure 2, it is of the present utility model to prevent the blast-melted skimming device with slag, including mop 8 and gear Slag nest 9, pushing off the slag nest 9 are arranged at 1 leading portion of trough, i.e., original slag skimmer downstream, and the mop 8 is tied for T-shaped Structure, 9 both sides of pushing off the slag nest offer the groove being adapted with 8 both sides of mop, and the mop 8 is embedded in pushing off the slag nest 9 In the groove of both sides, the lower end boss end of the mop 8 is higher than 9 front end edge of pushing off the slag nest, to ensure mop 8 Lower end is less than molten iron level.

Pushing off the slag nest 9 is preferably disposed on 1 leading portion of trough apart from the position of original slag skimmer The Small Well 62-4m, also may be used 9 position of pushing off the slag nest is determined according to produce reality comfort level, is set up on pushing off the slag nest 9 for ease of mop 8, the pushing off the slag 1.5 times for 1 width of trough of 8 upper boss width of device, 1-1.2 times for nest width of lower lobes position width.Pushing off the slag Nest 9 reduces can molten iron flow rates, and 50-100mm below molten iron level is preferably goed deep in 8 lower end boss end of the mop, To guarantee that scum silica frost can be intercepted by mop 8, in routine use, be ensure slag skimmer can long-term safety reliably work and Filtering residue effect is played, after the stifled iron notch that taps a blast furnace, arranges a blast-furnace man to clean out the slag that mop 8 is leached from molten iron, it is ensured that under It is secondary when tapping a blast furnace through the molten iron that filtration swimmingly from 8 down channel of mop by and flow into hot-metal bottle.

For concrete material, the mop 8 includes the castable of the shell and inside the shell made by steel plate, shell Thickness be preferably 0.2-0.3m.After pushing off the slag nest 9 is made, by 8 shell of mop made embedded 1 both sides of trough It is compacted in groove, groove is tamped using castable with contacting dies position；After shell installation, castable is mixed with water and is stirred Inside the shell is inserted after mixing, such as no castable can be filled using hydrous taphole loam, tamped after the full shell of filling；In slag skimmer mould After castable compacting, using gas fire baking mop 8 and pushing off the slag nest more than 9 three ten minutes, it is ensured that castable consolidation molding Molten iron can be resisted to wash away and corrode.

Claims (6)

1. the blast-melted skimming device with slag is prevented, it is characterised in that：Including mop (8) and pushing off the slag nest (9), the gear Slag nest (9) is arranged at trough (1) leading portion, and the mop (8) is T-shaped structure, and pushing off the slag nest (9) both sides offer The groove being adapted with mop (8) both sides, in the groove of embedded pushing off the slag nest (9) both sides of the mop (8), the pushing off the slag The lower end boss end of device (8) is higher than pushing off the slag nest (9) front end edge.

2. the blast-melted skimming device with slag is prevented as claimed in claim 1, it is characterised in that：On the mop (8) 1.5 times for trough (1) width of portion's projection width, 1-1.2 times for nest width of lower lobes position width.

3. the blast-melted skimming device with slag is prevented as claimed in claim 1, it is characterised in that：Pushing off the slag nest (9) Trough (1) leading portion is arranged at apart from the position of The Small Well (6) 2-4m.

4. the blast-melted skimming device with slag is prevented as claimed in claim 1, it is characterised in that：Under the mop (8) 50-100mm below molten iron level is goed deep in end boss end.

5. the blast-melted skimming device with slag is prevented as claimed in claim 1, it is characterised in that：Mop (8) bag Include the castable of the shell and inside the shell made by steel plate.

6. the blast-melted skimming device with slag is prevented as claimed in claim 5, it is characterised in that：The thickness of the shell is 0.2-0.3m。