CN206328421U - The small pit device of blast furnace dry type iron tap channel water-cooled - Google Patents

Abstract

The utility model belongs to blast furnace discharge yard slag iron processing unit, a kind of particularly small pit device of blast furnace dry type iron tap channel water-cooled, pitting shell is made up of steel construction, the cube pitting with four walls and bottom surface is made up of refractory brick in shell, pitting it is suitable for reading on major groove, cleek and slag runner are set, vertical snakelike water cooling tube is set in four walls of pitting, the snakelike water cooling tube of prostration is set in the bottom surface of pitting, the inlet tube and outlet tube of the snakelike water cooling tube of vertical and prostration stretches out the top of pitting, and is connected with feed pipe and return pipe.The utility model is rational in infrastructure, the speed that can effectively control pitting to be corroded by hot slag iron, extends the service life of pitting, reduces labor intensity.

Description

The small pit device of blast furnace dry type iron tap channel water-cooled

Technical field

The utility model belongs to blast furnace discharge yard slag iron processing unit, particularly a kind of blast furnace dry type iron tap channel water-cooled pitting Device.

Background technology

Dry type iron tap channel is made up of tap drain with pitting, and this slag iron processing system cost of manufacture is compared with iron storage type major groove less very It is many, while being not easy great burn-through accident occur, so the blast furnace selection less than normal of general volume uses this slag iron processing system.

Dry type iron tap channel tap drain is mainly washed away and corroded by slag iron, for only one of which iron mouthful, produces more than 1000 tons daily Blast furnace, need to make weekly once, and about 2 hours time, cost of manufacture is at 1500 yuan or so；Dry type iron tap channel pitting is molten iron storage Device, inside is typically stored with 5 to 8 tons of liquid molten iron, to ensure the normal work of skimming tool, because pitting is long-term by slag iron heat State corrodes, typically after 25 to 300,000 tons of iron is crossed, it is necessary to remake once, it is necessary to about 12 hours time, cost of manufacture About 20000 yuan.

The making tap drain time is short, can complete to make all work in blast furnace casting gap, can be thrown at any time after having made Enter to use, belong to controlled range；Make that the pitting time is long, blast furnace needs damping down, high cost, and blast-melted flow into the small of new production Hole, easily occurs the major accidents such as pitting explodes, pitting freezes.

Utility model content

The purpose of this utility model is to provide a kind of small pit device of blast furnace dry type iron tap channel water-cooled, and its is rational in infrastructure, can Effectively to control the speed that pitting is corroded by hot slag iron, extend the service life of pitting, reduce labor intensity.

What the purpose of this utility model was realized in：The small pit device of a kind of blast furnace dry type iron tap channel water-cooled, by steel construction Constitute pitting shell, the cube pitting with four walls and bottom surface is made up of refractory brick in shell, pitting it is suitable for reading on set Major groove, iron runner and slag runner are put, vertical snakelike water cooling tube is set in four walls of pitting, sets flat in the bottom surface of pitting Sleeping snakelike water cooling tube, the inlet tube and outlet tube of the snakelike water cooling tube of vertical and prostration stretches out the top of pitting, and and feed pipe It is connected with return pipe.

The utility model principle is that pitting is integrally formed into structure, and pitting shell is welded with steel plate, and outside pitting Each carries out water cooling plant to shell sideways, and water flowing cooling is internally formed suitable ladle heel layer in pitting, so can effectively controlled The speed that pitting is corroded by hot slag iron, extension pitting service life was by 3 to 5 years, while pitting is integrally formed structure, It is easily changed construction.

Main contents：

A square pit-hole is excavated in cast house pitting position first, size is bigger than pitting overall structure, position and original position Put identical；Secondly make pitting shell, shell is divided into bottom surface, front, rear, left and right face, totally five faces, before close to major groove, behind lean on Nearly iron runner, left side shell stays residual iron eye, and the right side is close to slag runner, by above-mentioned five face firm weldings, constitutes square；Then according to small Each face size of shell and pitting heat flow rate per unit area are cheated, snakelike cooling water pipeline is made, pipeline will avoid the bonding pad of pitting and each ditch Domain and residual iron Vitrea eye domain, will make Pipe installing to pitting housing first face；It is connected according still further to pitting with major groove, iron runner, slag runner Width, the distribution situation of pitting and residual iron eye, make pitting mould；Pitting shell is lifted into together with cooling water pipe and tapped a blast furnace The pit-hole position dug out of field, and place it is stable after, the connection of adjustment pitting shell and each ditch, and pitting shell and cast house it Between void area puzzle brick, fixed pitting shell, then pitting mould is in the light of actual conditions placed in pitting shell fixed, Finally pitting is poured out, connect cooling water pipe and dry pitting, can be come into operation after skimming tool is installed.

Water-cooled pitting toasts dry before being taken into use, and cooling water valve should not be opened；It is blast-melted to cross after pitting, pay close attention to pitting Skin temperature, after skin temperature reaches 120 DEG C, 1/4 is reached by cooling water valve, pitting skin temperature is paid close attention to, if continued Rise, then continue out big 1/4 valve, if dropping to less than 80 DEG C, valve opening is turned down into half, by regulation, make small Hole skin temperature is maintained between 80 DEG C -100 DEG C.

Under general blast furnace stable case, pitting skin temperature regular monitoring is paid close attention to when running into blast furnace short term damping-down Pitting skin temperature, adjusts knot cooling water inflow, if running into banking, need to take to cut off the water and put pitting work.

Beneficial effect：

Water-cooled pitting is easy to use succinct, can judge pitting side wall and bottom by measuring pitting cooling water turnover water temperature difference Portion's erosion condition, understands the working condition of pitting；Secondly water-cooled pitting is integrally formed structure, and replacing pitting is only needed to will be small Hole shell integrally slings replacing, and replacing construction is substantially reduced with difficulty；Last water-cooled pitting service life more common pitting Service life has more 5 to 8 times, and integral manufacturing pitting funds mutually greatly reduce, and have saved blast fumance cost.

The utility model is rational in infrastructure, is effectively controlled the speed that pitting is corroded by hot slag iron, extends pitting Service life, reduces labor intensity.

Brief description of the drawings

The utility model is further described below in conjunction with accompanying drawing, Fig. 1 illustrates for the utility model front view structure Figure, Fig. 2 is Fig. 1 right side structural representation, and Fig. 3 is Fig. 1 overlooking the structure diagram.

Embodiment

A kind of small pit device of blast furnace dry type iron tap channel water-cooled, as shown in Figure 1, Figure 2, Figure 3 shows, is made up of outside pitting steel construction Shell, is made up of the cube pitting 1 with four walls and bottom surface in shell refractory brick, pitting 1 it is suitable for reading on major groove is set 2nd, iron runner 3 and slag runner 4, vertical snakelike water cooling tube 6 is set in four walls of pitting 1, prostration is set in the bottom surface of pitting 1 Snakelike water cooling tube 5, the inlet tube and outlet tube of the snakelike water cooling tube 6,5 of vertical and prostration stretches out the top of pitting 1, and with confession Water pipe is connected with return pipe.

Claims (1)

1. a kind of small pit device of blast furnace dry type iron tap channel water-cooled, it is characterized in that：Pitting shell is made up of steel construction, in shell by Refractory brick constitutes the cube pitting (1) with four walls and bottom surface, pitting (1) it is suitable for reading on major groove (2), iron runner are set (3) and slag runner (4), vertical snakelike water cooling tube (6) is set in four walls of pitting (1), set in the bottom surface of pitting (1) The snakelike water cooling tube (5) of prostration, the inlet tube and outlet tube of the snakelike water cooling tube (6,5) of vertical and prostration stretches out the top of pitting (1) Portion, and be connected with feed pipe and return pipe.