The application process of clay refractory brick for coke oven involves many links, including material selection, construction preparation, masonry method, matters needing attention and later maintenance. The following is a detailed description of the use process:

I. Material selection

Refractory bricks: select clay refractory bricks that meet the design requirements, and ensure that their size and shape are accurate, and there are no defects such as damage and cracks.

Refractory mud: according to the temperature and environment of the use part, choose the appropriate refractory mud. For example, when the coke oven is repaired in hot state, mortar with sodium silicate or phosphoric acid as binder can be used.

II. Construction Preparation

Technical disclosure: Before construction, technical disclosure shall be made to clarify the masonry requirements and matters needing attention.

Foundation treatment: Remove sundries and oil stains on the foundation surface and keep it clean.

Material transportation: Refractory bricks can be transported to the construction site by forklift and truck, and lifted to various operating platforms by crane.

III. Masonry Methods

Masonry sequence: first lay refractory bricks, and then install furnace columns and other components.

The flue construction adopts closed method, and the lining vault can be built by dragging tires.

After the masonry of the combustion chamber wall is completed, it is necessary to check the verticality and flatness of the wall.

Key points of masonry: use the method of double-sided mortar squeezing to ensure that the fullness of mud is not less than 95%.

When laying, refractory mud should be evenly spread on the foundation surface, and the brick joints should be full of mud.

In the process of masonry, the size of brick joints and the flatness of brick surface should be checked at any time.

Expansion joint setting: expansion joints should be reserved for masonry to adapt to temperature changes.

IV. Precautions for use

Temperature adaptability: Clay refractory brick is suitable for parts with low temperature and large fluctuation, such as furnace door, riser lining brick, small flue lining brick, regenerator wall sealing and furnace top.

Construction environment: avoid construction in damp and high temperature environment, and the construction personnel should wear protective equipment.

Quality inspection: after the completion of masonry, conduct a comprehensive inspection to ensure that there is no dislocation, cracks and other phenomena.

Post-maintenance: Carry out regular maintenance and keep it dry.

V. Post-maintenance

Regular inspection: conduct regular inspection on masonry, find and deal with cracks and looseness in time.

Hot repair: In the hot state of coke oven, local repair can be carried out by spraying or patching.

Thermal insulation measures: in order to reduce the heat dissipation of high-temperature walls, thermal insulation materials can be filled between external walls.

Through the above steps and precautions, the correct use and long-term stable operation of clay refractory bricks for coke ovens can be ensured, thus prolonging the service life of coke ovens.