Raw Materials for Refractory:High Refractoriness Aluminum Mortar Cement for Metallurgy Steel Casting
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 1000 m.t./month
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High aluminum cement can be used in the manufacture of prepared monolithic refractories, preparation of plaster alumina cement, self-stressing cement, cement with other special purposes, and maintenance, resistance to sulfate erosion and winter construction of engineering with other special needs.1. Cement CA-50 with Excellent high temperature.
Technical index
Item | CA-50 | CA-70 | CA-90 | |
Al2O3 | % | ≥50, | ≥70 | ≥90 |
SiO2 | ≤8.0 | ≤8.0 | ≤8.0 | |
Fe2O3 | ≤2.5 | ≤2.5 | ≤2.5 | |
S | ≤0.1+ | - | - | |
CaO | 30 | 25 | 9 | |
Refractoriness | ℃ | 1550 | 1650 | 1750 |
Size | Mu | 180 | 180 | 180 |
Physical and Chemical Properties
Product Name | Low cement and high alumina castable | |
Product Code | LH-16B | |
Density (kg/m3) | ≥2.5 | |
Chemical Component (%) | AL2O3 | ≥65 |
SiO2 | 20 | |
Cold Crushing Strength(MPa) | 110°C*24h | ≥80 |
1100°C*3h | ≥80 | |
Modulus of Rupture(MPa) | 110°C*24h | ≥8 |
1400°C*3h | ≥10 | |
Linear Change Rate(%) | 1100°C*3h | -0.1—--0.3 |
Water Consumption of Construction (%) | 6~7 | |
Maximum Service Temperature(°C) | 1400 | |
Application Part | The front end of cooler, precalciner, heat-resisting parts and lining of other industrial kiln.
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- Q: Can quantitative feeder be used in refractory plant? Thank you
- Feeder experts, justice and analysis, quantitative feeder, of course, can be used in refractory plants
- Q: The mechanism and function of antioxidants in carbon containing composite refractories are briefly described.
- Mechanism analysis of silicon actionWhen silica fume is added to the carbon composite refractory, the phase changes and chemical changes are as follows:<1> Si (s) +C (s) =SiC (s) Delta G ~ =-522+1.50T (kJ)<2> Si (s) +MgO (s) =Si (g) +Mg (g) Delta G ~ =203.9-0.13T (kJ)<3> 2Si (s) +CO (g) =SiC (s) +SiO (g) Delta G ~ =-963.2+0.31T (kJ)<4> SiC (s) +CO (g) =SiO (g) +2C (s) Delta G ~ =81.47-0.15T (kJ)<5> SiO (g) +CO (g) =SiO2 (s) +C (s) Delta G ~ =-668.8+0.33T (kJ)From the above diagram and the reactions seen at high temperatures has joined the Si SiO and Mg volatiles, but <4> and <5> reaction have played a role in inhibiting carbon oxidation, and the condensation of SiO2 to a certain extent the role of protective film.The total reaction process is CO reduction to C, and there is a certain volume expansion, so that the pores are blocked and the density of bricks is increased. Therefore, the oxidation resistance of brick is improved.
- Q: Concrete composition and function of magnesia bond used in refractory
- According to the chemical composition and use can be divided into metallurgical magnesia, magnesia brick, magnesia brick, magnesia brick, magnesia calcium brick, magnesia brick and other varieties. Its performance is greatly affected by CaO/SiO2 ratio and impurities. High purity magnesia brick refractoriness under load and thermal shock resistance are better than the general magnesia brick. High refractoriness, has good resistance to alkaline slag and iron slag, is a kind of important senior refractories. Use of magnesia product production by sintering process, sintering temperature is 1500 ~ 1800 DEG C, in addition, you can also add chemical bond, made of brick and unshaped refractory material. Mainly used in open hearth furnace, electric furnace, converter, oxidation non-ferrous metal smelting furnace, cement kiln and alkaline refractory kiln etc..
- Q: What refractories are resistant to fluorine gas?
- It is recommended to use fused-quartz brick, which will produce hydrofluoric acid fluorine (an acidic gas) when water vapors. It is cheap. While it is recommended to use silica?brick if it exceeds 1,200 degrees. So acidic refractory is an advisable refractory for using. It works well if the temperature is below 1200 degrees.
- Q: How should refractory cement be used?
- How to use refractory cement? How to use refractory cement? Thank you.
- Q: how is the high-temperature flame-retardant fibre board?
- high-temperature flame-retardant fibre board is good decorative material. Hope it helps you.
- Q: How long is the fire endurance of the rock wool board?
- Some time ago we did an experiment, the result is no change in the burning 30 minutes. The following is the picture of rock wool after the test .
- Q: I wanna ask what are the acidic refractories?
- You can look at these: (1) silica?brick with stronge acidity, unshaped silicious refractory, quartz glass and fused silica combined products; (2) semi-silica refractory with moderate acidity and pyrophyllite refractory; (3) clay-based refractory with weak acidity. I hope it is useful!
- Q: What is refractory aggregate?
- Refractory aggregate is fire-resistant product improved with low temperature binder, chemical?compound and normal temperature strength.
- Q: What is shapeless refractory with high performance?
- The popular ones are: Non-cement fine powder bonded castable is a functional refractory castable with nano material introduced.
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Raw Materials for Refractory:High Refractoriness Aluminum Mortar Cement for Metallurgy Steel Casting
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 1000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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