Anode baking furnace cross wall brick and fire channel wall brick masonry, carbon furnace lining refractory material overall construction process~

The lining process of the horizontal wall of the carbon anode baking furnace and the fire channel wall is gathered and shared by the refractory brick manufacturers.

1. Masonry of horizontal wall of roasting furnace:

(1) The bottom of the refractory bricks of the first layer of horizontal wall masonry can not be poured with concrete. The reserved size of the vertical joint is 2~4mm, and the horizontal joint is 1mm.

(2) When building the horizontal wall, the heavy clay refractory bricks used should be matched with heavy refractory mud for masonry.

(3) A 9mm expansion joint is reserved in the middle of each bin on the horizontal wall. The masonry of the upper and lower layers should be staggered. The horizontal joints can be filled with refractory fiber paper to eliminate stress and thermal expansion and contraction. The impact of the body.

(4) Precautions for horizontal wall masonry:

The joints of the upper and lower layers of the refractory bricks should be flat and aligned. Before the masonry, the masonry line of the bottom plate and the side wall should be pulled out and marked. The reserved position and size of the expansion joints should meet the design requirements, and the refractory mud in the joints should be fully filled Dense.

(5) Key points of horizontal wall masonry: strictly control the flatness, horizontal elevation, groove size, expansion joint reserved size, fullness of refractory mud, filling thickness of refractory fiber felt, etc. of horizontal wall masonry.

2. Brick masonry of the fire channel wall of the roasting furnace:

After the horizontal wall is completed, start to build the fire channel wall bricks. Before laying, check the size and verticality of the notch of the horizontal wall, between the two fire channel walls, the first layer of the fire channel wall and the sixth layer of bricks at the bottom of the furnace. Between, a layer of 10mm bauxite should be laid.

Masonry process of fire road wall bricks:

(1) The reserved size of the expansion joint of the fire channel wall is 1mm, and a slightly dilute refractory mud is used for masonry.

Vertical joints: The size of the reserved vertical joints of the fire path wall bricks should be 2～4mm. Except for the first layer and the top floor fire path wall bricks and the side wall masonry of the outer fire path wall using refractory mud for masonry, the other layers of fire paths Refractory mortar is not used in the vertical joints of wall tiles. Put a 2.5mm piece of hard paper into the gap of the vertical seam to control its size accurately.

(2) The masonry of fire channel wall bricks and horizontal wall bricks should be carried out simultaneously. Double auxiliary lines should be used for masonry. The expansion joints at both ends of the fire channel should be filled with refractory fiber felt at the height of each brick, and the thickness should conform to the design and construction. Require.

(3) The pulling bricks on the fire road wall and the fire road wall bricks also need to be masonry synchronously, and shall not be carried out in sequence.

(4) The notched wedge bricks on both sides of the joint between the fire channel wall and the horizontal wall should be built simultaneously with the fire channel wall bricks. If the last wedge brick is built higher than the top of the horizontal wall, it should be processed appropriately.

The masonry is carried out one by one in the furnace chamber, and the masonry sequence of the furnace chamber fire channel wall is as follows:

When the fire channel is built to the height of 2 bricks, start to build the bricks on the bottom of the material box, then increase the fire channel to 14 floors, and set up the scaffolding in the material box, and finally build the remaining fire channels alternately or in a stream.

Main points of fire-pass wall brick masonry: strictly control the flatness, horizontal elevation, groove size, expansion joint reserved size, refractory mud fullness, and filling thickness of refractory fiber felt.

3. Construction process of furnace top castable prefabricated parts:

(1) Before the furnace roof construction, the overall inspection and measurement of the elevation of the horizontal wall and the fire channel wall are carried out to facilitate the construction, adjustment and installation of the furnace roof castable prefabricated parts.

(2) According to the design layout of the horizontal wall and the fire channel wall, the furnace roof construction can be divided into two methods: prefabricated castable and cast-in-place.

(3) Before construction of the furnace roof, strictly inspect the angle steel frame and confirm that the angle steel has an accurate right angle and has been reinforced without being easily deformed. Make the frame size, diagonal and deformation conditions meet the design and construction requirements. After the frame is welded as required, holes will be opened when pouring.

(4) Before pouring the castable preform, the corresponding mold should be used according to the design size and shape, the inside of the mold should be cleaned, and the mold release agent should be brushed before pouring.

(5) The installation sequence of the furnace top castable prefabricated parts: first install the fire channel wall furnace top prefabricated parts, and then install the horizontal wall furnace top prefabricated parts.

Installation of the prefabricated parts of the furnace roof of the fire tunnel wall: First, lay refractory slurry on the fire tunnel wall to prevent the castable prefabricated parts from being placed unevenly, and then paste the aluminum silicate refractory fiber felt.

Installation of the prefabricated parts of the horizontal wall furnace roof: first lay the aluminum silicate refractory fiber felt on the bottom surface, and then fix the prefabricated parts in place.