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Several general solutions for castable

Words:[Big][Medium][Small] Mobile Page Two-Dimensional Code 2018-06-10     

Castable as a new type of refractory material, its main characteristic is to have high liquidity, suitable for forming of monolithic refractories in pouring way, compared with other monolithic refractories, binder and moisture content is higher, liquidity is good, so not stereotypes refractories has a wide application range, according to the conditions of use of the materials and the binder used to choose them.It can be directly poured into the lining body for use, and can be made into precast blocks by pouring or shaking.

1. Q: what is castable? 

Answer: castable is a kind of uncertain refractory material using the construction method of ram-casting vibration can discharge the bubbles in the material to achieve density. 

 

2. Q: what are the application fields of castable? 

Answer: building materials industry (cement glass ceramics, etc.), petrochemical industry, electric power industry, metallurgical industry, nonferrous metal and similar high temperature kilns. 

 

3. Q: is the amount of water added during the construction of castable strictly controlled? 

Answer: must control strictly, execute strictly according to product construction specification. 

4. Q: what should be paid attention to during the construction of castable in summer? 

A: attention should be paid to the following questions:

A. The pouring material is forbidden to be exposed to the sun

B. The water temperature for mixing shall not exceed 25 ℃

C. Shading should also be done at the construction site. Water spray cooling treatment can be done on the outer wall of the equipment if conditions permit

5. Q: what should be paid attention to in the construction of castable in winter?

A: attention should be paid to the following questions:

A. preferably in a covered workshop

B. If there is no condition, a shed can be built on site for insulation

C. Stir 30 ° c to 50 ° c with warm water

6. Q: how is the castable preserved? 

Answer: pouring material should be saved in the storehouse that has canopy and want to do moistureproof layer below must not rain be affected by damp

7. Q: how to maintain the castable after completion of construction? 

A: hydraulic castable with natural moisturizing maintenance 24 hours maintenance 24 hours for special large quantity of cement traditional hydraulic castable for 48 hours moisture curing hot rigid castable curing process shall not touch water, should be under 85% relative humidity for hydraulic castable nature conservation, specific product specification shall prevail. 

8. Q: how to bake the castable? 

Answer: castable general baking system in strict accordance with the product instructions to prevent incorrect oven caused by the adverse consequences.

 

9. Q: how to choose uncertain refractories under actual working conditions? 

A:

A. Choose the most suitable material, instead of the best material, comprehensive consideration can be given to the performance-to-price ratio

B. The choice of castable or ramming materials shall be made according to the use site and specific construction requirements. 

10. Q: classification of uncertain refractories? 

Answer: a, according to construction method cent has pouring makings, ramming makings, but plastic, self-flowing makings, spray coating

B. According to the hardening mode, there are hydraulic hardness, pneumatic hardness and thermal hardness

C. According to the classification of binders, water has cement binding, phosphate binding, sodium silicate binding, ultra-fine powder (no cement at all)

D. High aluminum, corundum, mullite, silicon carbide, clay, magnesium, etc

E. Wear resistance, acid and alkali resistance according to performance

 

11. Q: what is the routine inspection of uncertain refractory materials upon delivery? 

Answer: the performance index that detects has capacity weight, line change rate, compressive and flexural strength, chemical composition (aluminium, iron, silicon) wear-resisting, thermal conductivity coefficient. 

 

12. Q: what part of the ramming material is suitable for? 

Answer: it can be used for the parts with complicated structure that are not suitable for vibration of supporting mould.



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