Ten questions in using firebrick

1.Firebrick lining divided into four categories by brick gap size and sophistication of the operation.

Its category and brick gap size are:

   Class Ⅰ, ≤ 0.5mm;

   Class Ⅱ, ≤ 1mm;

   Class Ⅲ, ≤ 2mm;

 Class Ⅳ, ≤ 3mm.

Rotary kiln system with fire clay refractory lining masonry, mortar joints should be within its 2mm, the construction should be strictly controlled. Not move equipment lining the mortar joint, and the upper and lower inner and outer layers of brick joints should be staggered.

2.Modulating brick with refractory mortar should be prepared in accordance with the following principles:

•  Beforer Modulating brick shoud deal with various refractory mortar masonry pre-test and pre-determine the different bonding slurry time, initial setting time, consistency, and water;
•  modulating different mud shoud use different utensils and cleaned in time
• modulation of different quality mud to use clean water, water should be weighed accurately and reconcile should be uniform, with the tone with the use. Has prepared a good hard mud hydraulic and gas can not add water to use, has the initial setting mud shall continue to use;
• modulation phosphate binding provisions to ensure that the mud trapped material time, as used with the tune, has good modulation shall be arbitrarily diluted with water and mud. This mud is corrosive because not in direct contact with the metal casing.;

3,Firebrick varieties based on the design and layout of masonry. Masonry should be sought brick gap straight, smooth arc, masonry dense. For the refractory lining of the kiln cylinder must also ensure reliable concentric rings and brick kiln barrel, it should ensure that the brick kiln shell with full posts tight surface contact between the bricks should be firm and binding. When the device Not move masonry brick lining, fire mud plumpness requires more than 95%, use the puree pointing surface cracks between the blocks, but promptly scrape the surface of the excess mud brick lining.

4 Using a wooden hammer, rubber hammer or hard plastic hammer and other flexible tools to brickwork  and not use steel hammer.

5.Masonry should Not move Masonry fire insulation composite liners, should masonry hierarchical and segmentation, mixing is strictly prohibited mixed-layer Masonry, Masonry insulation lining also have to fill slurry full seam encountered when machining holes and welding parts to brick or board crevice use mud infill. Prohibition of arbitrary paved, mud everywhere, without leaving any gaps or practice. In the insulating layer, where the anchor is in the arch of the foot brick after brick, swelling around the holes and the contact areas

and shall use brick masonry.

6. Firebrick lining of the expansion joints must remain set according to the design, expansion joints shall be omitted from the width of the negative tolerance should not be left inside seam lumps of debris and use fire-resistantfiber will fill the joints, to avoid over the outer space phenomenon. Insulation layer is generally not to set expansion joints.

7. Form an important part of the complex parts of the lining should be pre-masonry. The structure is extremely complex lining of the processing may be considered to use castable lining.

8 Leaving in the brick lining of the exposed metal parts, including palm brick panels, brick retaining plates and other parts to use shaped bricks, castable refractory fiber or closed, may not be directly exposed to the hot gas kiln in use.

9.Anchor brick of masonry brick structure, according to the design requirements to stay located not missed. Hanging around the hole may not use cracked anchoring tiles. Pieces of metal hooks to hang flat real. Hanging hole and hooks can not stuck, the gaps remain available refractory fiber infill.

10. When capped brick Masonry, brick and curve fitting bricks, if original brick are not satisfied with the sealing requirements, use brick cutting machine cutting finishing not use manual processing tiles. Machining brick dimensions: the capping brick kiln and brick panels under the palm should not be less than 70% of the original brick; in joints and corners flat brick brick, brick shall not be less than the original 1/2 must use the original brick locking. Face of brick prohibited processing