Requirements and precautions for building the construction of glass melting kiln for refractory materials

Requirements and precautions for building the construction of glass melting kiln for refractory materials

The masonry construction of glass melting kilns is an important basis for whether the kiln can meet the expected furnace age or extend the age of the furnace. At the beginning of the procurement period of the refractory material, the performance and quality of the materials must meet the requirements of national standards or design requirements. During construction, it should also be in accordance with relevant national standards or industry standards. The following is the requirements and precautions for the construction of glass -resistant fire -resistant materials for glass -resistant fire -resistant materials:

1. The requirements for the construction of glass melting kiln fire -resistant materials

① The glass molten kiln must be designed and constructed according to the design, and the refractory materials used should be based on design requirements and must be related countries or industry quality standards.

② The masonry construction of melting kiln fire resistance materials should strive to work continuously and should not stop working for too long due to material supply. Therefore, it is required that the refractory material enterprise must be supplied in accordance with the date specified in the contract.

③ The requirements for construction in different seasons

Winter construction: Ensure that the temperature of the masonry is not lower than+5 ° C, mud mud and watering need to be stirred with hot water, and the mud needs to be kept at+10 ° C, and it is not advisable to add chemical coagulants and antifreeze.

?Construction of the rainy season: masonry venues, masonry materials and masonry must prevent rainfall, and masonry must not be soaked by rain and water.

④ There are still some bricks in the process of baking kiln to be built, such as the expansion of the stitches, the joints, and the sewing of the seam, and should be carefully operated in accordance with the program.

Second, precautions in the process of glass firing fire -resistant material building

(1) Requirements for masonry bricks

???According to different parts and use requirements, the size of the masonry brick seam is divided into the following 4 categories.

???Special masonry: brick seams do not exceed 0.5mm.

???One type of masonry: no more than 1mm brick seam.

???Two types of masonry: brick seams do not exceed 2mm.

???Three types of masonry: Brick seams do not exceed 3mm.

(2) The masonry uses dry and wet masonry according to different parts and use requirements

???Dry building parts: The clay tiles of the bottom of the molten kiln, the pool wall brick, the bottom of the flow tract pool, the pool wall and the top cover, the gap brick of the pool wall, the plaid, the insulation support brick stack and the deck of the neck of the tank. Other parts need to be built with mud.

(3) The requirements for mud for masonry

??① The refractory material of different materials is matched with mixed mud, not mixed or wrong.

??② Pre -masonry should be pre -mounted to determine the adhesion time, viscosity and water consumption of different mud.

??③ Make different mud, use different appliances, not mixing, if necessary, it should be cleaned and then used.

??④ Make cleaning mud with clean water, accurately use the water, and uniformly adjust (requiring mud mixed machines) and use it as follows. Essence

??⑤ The mud that has been passed during the preservation period must not be used.

(4) Requirements for the expansion seam of masonry

??① The expansion seam must be left according to the design requirements, and the size and design error of the expansion seams in any part should not be greater than 2mm.

??② There is no debris (including the filled wooden boards, cardboard, straw rope, etc.) in the expansion seam.

??③ The expansion seam should avoid the stress site and the steel structure.

??④ The form of the expansion seam strives for the wrong seam structure, and the design of the expansion seam that needs to be blocked should be convenient.

??⑤ The masonry of the expansion seam should be built, and the refractory material should be built, and it should not be the insulation material.

(5) Thermal insulation of the molten kiln

??① The thermal insulation layer of the molten kiln must not be wrapped in the steel structure of the molten kiln, and the steel structure must be ensured.

??② The swelling seams of the molten kiln vault, bottom, wall, and wall should not be insulated, and the thermocouple metering holes and other observation holes should not be insulated.

??③ Instant heat at 200 to 400mm under the wall liquid of the melting department.

(6) Requirements for masonry molten kiln arch

??① The brick mud seam is built according to the design requirements. When it does not meet the requirements, it is necessary to return to work. It is strictly forbidden to mobilize the tire to change the brick gap. It is not possible to use the mud seam to be built. If necessary, the brick material can be processed.

? ② All bricks must be closely consistent with the tire to ensure the tire. The size of the brick brick is strictly prohibited.

? ③ The middle lock brick of the requires a uniform person with mud, and then locks the person in the last line at the same time.

(7) The wall of the masonry of a variety of materials and refractory materials. Except for special bite according to the design requirements, the walls are bite every 5 to 8 tiles. When bite, the inner side brick is bite outward. Do not use it as a bite material.

(8) The mud in the masonry brick with mud with mud mud should be full. The mud in the bricks must be bonded with the brick surface. The surface of the wall is required to use the same material mud seam, and the excess mud on the surface of the masonry should be scraped off in time.

(9) The firing refractory material should be cut and grinded according to the design requirements, and the brick surface of the glass liquid should be cleared. The sintering material is exposed to the surface of the glass liquid and flames, and strives not to process and does not destroy its surface. The method of selecting bricks can be used to meet the requirements for the shape of the brick material.

(10) The masonry structure of the masonry of the ingredients, the small furnace spitting mouth, the small furnace 碹, the wall and the bottom, the masonry structure of the stuck neck and the firing refractory material shall be built and numbered.

(11) When molten kiln masonry, we should try to avoid the following diseases.

Walls are misplaced; heavy stitching; straight sewing; upside -down brick heads and small heads;