① The masonry works of regenerator and small furnace shall be carried out in accordance with the code for construction and acceptance of industrial furnace masonry engineering (gb50211-2004), code for construction and acceptance of float glass furnace masonry engineering (jcj13-1998) and other current national standards, and shall be constructed in strict accordance with the design requirements.
② The refractory materials transported to the site shall be placed neatly according to the name, brick number, specification and model and masonry sequence. Handle refractory materials with care during transportation and loading and unloading, and pay attention to the integrity of edges and corners of refractory bricks. The refractory mud must be stacked separately according to different materials, and shall not be damp and caked. Mixers and mud loading devices shall be cleaned before use. Refractory mud of different materials shall be mixed and used separately and shall not be mixed. The slurry for building bricks shall be compatible with the fire resistance and chemical composition of the bricks used.
③ During the masonry construction, bricks shall not be cut on the masonry. When the refractory bricks need to be processed, they must be machined. Wood hammer or rubber hammer shall be used to align fire-resistant bricks, and iron hammer is strictly prohibited. Do not strike the masonry after the mud paddle is dry.
④ The regenerator wall must be laid flat and straight according to the design requirements, the brick joint shall not be greater than 2mm, and the masonry shall be staggered. The mud is full, and the wall surface shall be cleaned without mud. When bricks of different materials are laid at the same time, they shall be laid according to the levels required by the design. In principle, bricks with hard materials shall be pressed against bricks with soft materials.
⑤ Expansion joints shall be reserved in strict accordance with the design requirements. The expansion joints shall be straight and straight. The joints shall be kept clean without mud, lime soil and sundries. The expansion joint in the wall shall be filled with polyethylene foam plate to prevent sundries, lime and soil from falling in and unable to be cleaned. For expansion joints in contact with insulating bricks, hard bricks shall be used to cover the expansion joints. Expansion joints connecting the inside and outside of the wall shall not be reserved, and 230mm staggered joints shall be reserved. According to the design requirements, straight up and down expansion joints or staggered up and down joints can be reserved. According to the design requirements, expansion joints may or may not be reserved for the outer insulation bricks of the regenerator wall. Generally, expansion joints are not reserved for insulating bricks.
⑥ Arch bricks and arch bricks must be built from the arch foot on both sides to the center. If there is masonry behind the arch foot brick, the arch and arch can be built only after the masonry is completed. When building arch and arch, arch bricks must be pre arranged to determine the size of brick joint. It is strictly forbidden to invert the size of arch bricks. The thickness of lock brick (door closing brick) shall not be less than 2/3 of the brick thickness. It is not allowed to hit the lock brick directly with an iron hammer to avoid damaging or breaking the lock brick. The lock brick shall be replaced in time when it is damaged. After striking and locking bricks on the crown, the joints shall be filled with thin mud.
⑦ The arch tire and arch tire must be carefully made according to the dimensions specified in the drawing. The camber and center shall be accurate, the structure shall be stable, and the tread must be flat without deflection. After the completion of arch construction, the arch shall be tightened in time, and the arch mold can be removed only after the arch is separated from the mold and stabilized. The mould of the furnace bar arch must be removed before stacking the lattice to avoid damage caused by sudden heavy pressure on the furnace bar arch.
⑧ The starting surface of the regenerator shall be leveled in strict accordance with the design elevation. Control the size of masonry wall according to the drawing requirements. The wall masonry is straight, and the elevation of the brick layer is controlled by the number of poles. Check the flatness of the masonry at any time with a guiding rule, the verticality and levelness of the wall with a level ruler, the thickness of the brick joint with a feeler gauge, and the masonry size of the masonry with a steel tape. If it does not meet the masonry requirements, it shall be rectified in time.
⑨ Furnace bar arch masonry and leveling brick masonry are the key to regenerator masonry, which should be carefully constructed. Before masonry, the quality of furnace bar bricks shall be checked. All furnace bar bricks with loose material, cracks, bending and distortion shall not be used, and so shall the furnace bar tie bricks. The mould of furnace bar arch shall be supported smoothly and in the same height, and the ink line of each ring of furnace bar shall be marked on the mould, and the upper end shall be drawn for masonry. During the masonry process, the verticality of furnace bar shall be checked with a level ruler at any time. The furnace bar bricks shall be pre arranged before laying, and the thickness of the brick joint shall be determined. The brick joint shall not be greater than 2mm, and shall be built from both ends to the middle at the same time. The laying speed of each ring furnace bar shall be the same. When reaching the position of the tie bar brick, each ring furnace bar shall be in the same straight line, and the tie bar brick shall be built after passing the inspection with a guiding rule. The unqualified parts must be polished and leveled to ensure that the tie bar brick is not twisted or inclined. After the lacing bricks are laid, the furnace bar bricks shall be pre arranged again, and the thickness of the lock bricks shall not be greater than 2/3 of the brick thickness, and the lock bricks shall not be processed. The lock bricks shall not be too thin, and 2 ~ 3 furnace bar bricks shall be processed if necessary. The lock bricks shall not be too tight or loose. Generally, it is about 50mm higher than the crown. After each ring of lock bricks is built, the whole furnace bar arch shall be finally adjusted to keep the furnace bar arch vertical, consistent in height, and straight without distortion. Finally, lock bricks shall be driven at the same time to ensure uniform stress on the whole furnace bar arch. The purpose of laying leveling bricks is to ensure that the furnace bar arches of each chamber of the regenerator are at the same level and the same height, so as to lay a good foundation for the flat stacking of lattice bricks. The levelness of each chamber must be controlled within ± 1mm. If it does not meet the requirements, it must be polished and leveled. The bricks must be built close to the furnace arch. The masonry shall be straight. It is more difficult to build the leveling bricks of the connected regenerator, so it should be carefully constructed.
⑩ The perpendicularity and flatness of the masonry must be frequently checked during the construction of the regenerator wall. The inner wall and the outer wall of the insulation layer shall be built by biting to avoid excessive cracking of the insulation layer during baking. Due to the large expansion and elevation of the whole regenerator during kiln baking, at least 100mm expansion gap shall be reserved between the wall and the upper palm iron, between the wall and the arch ballast angle steel, between the wall and the top iron plate, and between the partition wall and the regenerator arch. There are many kinds of bricks and mud used for the regenerator wall, so they cannot be mixed during masonry. Acid bricks and alkaline bricks shall not be in direct contact and shall be effectively isolated. Zircon standard bricks shall be used to isolate the small furnace mouth fused corundum bricks from the wall. The parts where silica bricks contact with other bricks shall be effectively isolated to avoid contact reaction between bricks at high temperature and affecting the service life of the furnace. After the wall of the regenerator is built, it shall be cleaned, especially the inner side of the wall shall not be left with mud.