CN101358261B

CN101358261B - Masonry method of mixer

Info

Publication number: CN101358261B
Application number: CN2008101968419A
Authority: CN
Inventors: 秦祖宏; 程时胜; 胡小明; 黄道昌; 韩新华
Original assignee: Wuhan Iron and Steel Group Corp
Current assignee: Wuhan Iron and Steel Group Corp
Priority date: 2008-09-02
Filing date: 2008-09-02
Publication date: 2011-05-25
Anticipated expiration: 2028-09-02
Also published as: CN101358261A

Abstract

The invention relates to a method for building a mixer furnace in the metallurgical industry. The invention provides a building method to solve the problems that the existing mixer furnace building method can not prevent the taphole from easily being corroded and the separate taphole is out of step with the front wall after being poured. The purpose of the invention is realized through the following proposals: a mixer furnace building method, two end walls and the back wall adopting the brick building process and the front wall, the tap hole and the furnace top adopting the integral casting process. Experiments show that the problem that the corrosion degree of the front wall and the taphole is out of step is solved by the method. The method greatly improves the service life of the mixer furnace, the capacity of passing melted iron is increased to be more than 1500000 tons from the original capacity of less than 1000000 tons without repair in the midway, the cost is saved, the production efficiency is improved, and the method is propitious to popularization and application.

Description

The building method of hot metal mixer

Technical field

The present invention relates to a kind of method that hot metal mixer is built by laying bricks or stones in the metallurgy industry.

Background technology

At present, hot metal mixer built dual mode by laying bricks or stones, the one, all adopt brick form, the 2nd, adopt integrated poured, two kinds of modes respectively have relative merits, for brick hot metal mixer, body of heater can be etched in use for some time, especially the iron notch position weathers the most seriously, so some enterprise can decrease serious iron notch and furnace roof and pour into a mould invading, but in use finds, with iron notch, after the furnace roof cast, furnace service life is to a certain degree improved, but front wall occurs and iron notch, serious nonsynchronous problem of the erosion life-span of furnace roof has restricted the raising of furnace service life, its stove was used as a servant 1,000,000 tons of iron quantity not sufficients, and stove labour must repeatedly be repaired front wall and iron notch midway, has increased maintenance cost, has reduced production efficiency.

Summary of the invention

Can not prevent effectively that at existing hot metal mixer building method iron notch easily is etched and independent iron notch cast back and the serious nonsynchronous problem of front wall, the invention provides a kind of building method, can address the above problem preferably.

Described purpose is achieved by the following scheme:

A kind of building method of hot metal mixer: two headwalls, back wall adopt brick technology, and front wall, iron notch and furnace roof adopt integral cast technology.

When headwall is built by laying bricks or stones, the per four layers of brick clamp one deck expansion joint paper of short transverse, folder one deck expansion joint paper between adjacent two bricks of horizontal direction.The brick of building headwall by laying bricks or stones is filled space with the magnesium powder by the masonry thickness direction between layer and the layer.

Used brick is M-1, M-23, M-128 or M-129 type magnesia brick, must not be with seam between forward and backward, the upper and lower brick.

Before the formwork of being convenient to front wall cast of certain width is built at the wall position by laying bricks or stones before front wall and headwall joint walling supports brick, supports brick and all adopts M-1 or M-128 type magnesia brick, by the per 4 layers of folder one deck expansion joint paper of short transverse; Horizontal direction all adopts M-1 type magnesia brick, per 2 folder one deck expansion joint paper; Horizontal direction all adopts M-128 type magnesia brick, per 2 layers of folder one deck expansion joint paper.

Experimental results show that, adopt and to have solved front wall and the iron notch nonsynchronous problem of degree that weathers after the method for the invention, this method has improved the work-ing life of hot metal mixer greatly, crossing the iron amount is brought up to more than 1,500,000 tons by 1,000,000 tons of original less thaies, and need not to repair again midway, saved cost, improved production efficiency, be beneficial to and apply.

Description of drawings

Fig. 1 is the plumb cut structural representation of hot metal mixer;

Fig. 2 is the horizontal section structural representation of hot metal mixer.

Wherein, headwall 1, back wall 2, front wall 3, iron notch 4 supports brick 5, furnace roof 6.

Embodiment

Elaborate the preferred embodiment of the present invention below in conjunction with accompanying drawing.

With reference to Fig. 1, Fig. 2, the iron notch of brick hot metal mixer is seriously corroded, and carries out large repairs then.

Its two headwall 1, back wall 2 still are brick, and adopt integral cast technology for front wall 3, iron notch 4 and furnace roof 6.Specific as follows:

Two headwalls are built by laying bricks or stones:

With M-1, M-23, M-128 or the flat block of M-129 type magnesia brick allotment, before and after two-layer, require forward and backward, up and down must not with the seam, per 4 layers add one deck expansion joint paper, flat expansion joint paper of 2 brick clamps, purpose be to solve baker and use in headwall splash expand the front wall formwork cracking of building body that causes, cave in.Fill the space with the magnesium powder between layer and the layer, a batch levelling must carefully be cut in front-back wall and furnace bottom junction, and vision slit is above uses the kyanite composite brick, and the brick type is constant.

Front wall is built (formwork position) by laying bricks or stones:

With M-1 or the flat block of M-128 type magnesia brick, expansion joint paper of the per 4 layers of brick clamp of short transverse, expansion joint paper of per 2 folders of horizontal direction M-1, expansion joint paper of the per 2 layers of folder of M-128, before and after 4 layered sutures require forward and backward, upper and lower must not be with seam, between layer and the layer with magnesium powder filling space.

Back wall is built by laying bricks or stones:

Build with M-1 or M-128 type magnesia brick are flat, expansion joint paper of per 4 layers of folder one deck expansion joint per 2 M-1 brick clamp of paper horizontal direction, expansion joint paper of per 2 folders of M-128, the brickwork joint requirement, forward and backward, up and down must not be with seam, between layer and the layer with magnesium powder filling space.

The construction of iron notch position:

With aluminium silicon carbide mould material scene front wall and iron notch are together poured into a mould.Iron notch position mould material is poured into a mould at twice, be poured into for the first time 558mm place, molten iron face top, guarantee that homo(io)thermism begins to build rest part after 40 hours again in the stove under 16-20 ℃ condition, after all cast finishes, guarantee in the stove that homo(io)thermism is 16-20 ℃ of demouldings after 48 hours.

The furnace roof construction:

Adopt high strength micro expansion mould material disposal pouring.Build finish after, guarantee in the stove homo(io)thermism between 16-20 ℃, the demoulding after 72 hours.

Claims

1. the building method of a hot metal mixer is characterized in that two headwalls, back wall adopt brick technology, and front wall, iron notch and furnace roof adopt integral cast technology; When described headwall is built by laying bricks or stones, the per four layers of brick clamp one deck expansion joint paper of short transverse, folder one deck expansion joint paper between adjacent two bricks of horizontal direction, used brick is M-1 or M-23 type magnesia brick; Built the support brick between front wall and the headwall by laying bricks or stones, supported brick and all adopt M-1 type magnesia brick, by the per 4 layers of folder one deck expansion joint paper of short transverse; Horizontal direction all adopts M-1 type magnesia brick, per 2 folder one deck expansion joint paper.

2. the building method of hot metal mixer according to claim 1, the brick that it is characterized in that building headwall by laying bricks or stones be by the masonry thickness direction, between layer and the layer with magnesium powder filling space.