Products Description
The production process of refractory castable is simple, labor-saving and energy-saving, with high construction efficiency and good quality. It can be prepared on site or materials with excellent performance can be selected as needed. Therefore, refractory castable is an unshaped refractory material that is used in large quantities and has a wide range of applications in furnace construction projects.
Products Specifications
1、Mixing and refractory castables should use water.
2、The template used for casting should have enough rigidity and strength, the size of the template should be accurate, and deformation should be prevented during construction. The joints of the template should be tight and no slurry leakage. The template should take anti-adhesion measures. The surface of heat preservation masonry in contact with the casting material shall take waterproof measures.
3、The castables are mixed by forced mixer. The mixing time and the amount of liquid added should be carried out according to the construction instructions. When replacing the material grade, the mixer, hopper and weighing container should be cleaned.
4、Mixed refractory castables should be poured within 30min or according to the time specified in the construction instructions. Should not use the first set of castables.
5, continuous casting refractory furnace lining expansion joints should be set in accordance with the design provisions. If there is no provision, the average value of expansion joints per meter lining can be used as follows: clay refractory castables for 4~6mm; high alumina cement refractory castables for 6-8mm; phosphate refractory castables for 6-8mm; water glass refractory castables for 4~6mm, silicate cement refractory castables for 5~8mm.
6, refractory castables casting should be continuous. Before the first layer of pouring material before the first set, the second layer of pouring material should be completed; interval more than the first set of time, according to the requirements of the construction joints should be dealt with. Construction joints should be left on the center line of the same row of anchor bricks.
7、After the construction of refractory castable is finished, it should be maintained according to the method specified in the design. Curing shall not be subject to external forces and vibration.
8、Dismantle the mold. Non-load-bearing template can be dismantled only when the strength of the castable can ensure that its surface and corners are not damaged or deformed due to folding of the template. The load-bearing template can be removed only after the castable reaches 70% of the design strength. Thermosetting castables should be baked to the specified temperature before folding.
9、The cast lining surface shall not have defects such as skinning, cracks and holes. Slight grid cracks are allowed.
10、The prefabricated parts of refractory castables should not be stacked in the open. When stacked in the open air, rainproof and moistureproof measures should be taken.
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