High Refractoriness Magnesia Chrome Refractory Brick for Rotary Cement Kiln
The Description:
An alkaline refractory made from chromite and magnesia. The main components are chromium oxide and magnesium oxide. Good thermal stability, refractories above 2000ºC. It has good resistance to temperature sudden change and alkaline slag. It is used for laying the lining of steel-making open hearth furnace, steel-making electric furnace, non-ferrous metal smelting furnace, cement rotary kiln, etc.
Physical and Chemical Index of High Refractoriness and Excellent Resistant Magnesia Chrome Brick
| Items |
20A |
20B |
18A |
18B |
| MgO % ≥ |
55 |
50 |
58 |
53 |
| Cr2O3 g/cm3 ≥ |
20 |
20 |
18 |
18 |
| Fe2O3 ºC ≥ |
6-12 |
6-12 |
6-12 |
6-12 |
| CCS ºC ≥ |
40 |
35 |
40 |
35 |
| % P.L.C 1550ºC×2h |
0.1-0.4 |
0.1-0.2 |
0.1-0.4 |
0.1-0.4 |
| Apparent porosity % ≤ |
18 |
19 |
18 |
19 |
| Creep%(0.2Mpa*50h) |
0.8 |
0.8 |
0.8 |
0.8 |
Product function:
Chrome magnesia brick is a kind of composite alkaline firebrick with chrome ore and sintered magnesia as raw materials, containing 18% ~ 30% chromium oxide and 25% ~ 55% magnesium oxide according to the appropriate proportion. Generally, the amount of chromium ore added is less than 50% called magnesia-chromium brick, and that is greater than or equal to 50% is called chrome-magnesium brick. In addition to the sintered chrome-magnesia bricks fired under a weak oxidizing atmosphere, the products can also be made into unfired bricks, fused cast bricks, electromelting recombined chrome-magnesia bricks and loose materials. Can be used in converter, induction furnace, non-ferrous metal smelting furnace lining, electric arc furnace, open furnace, soaking furnace side wall, etc. When the ratio of chrome ore and sintered magnesia is 50%, the product has the greatest thermal shock resistance, sometimes called thermal shock stability chrome-magnesia brick, mainly used as alkaline open furnace top brick.
Company main products and profile:
Why choose us?
Zhengzhou Kaiyuan Refractories Co., Ltd is a manufacturer of silicon-aluminum refractory (fireclay brick, high alumina brick, silica brick, mullite brick, corundum brick, insulation brick, castable, mortar) for coke oven, blast furnace, hot blast stove, heating furnace, anode baking furnace, boilers and other industrial furnaces for 20 years located in Henan, China.
Our total annual production capacity is about 100,000 tons of dense-shaped refractory product, and 100,000 tons of monolithic refractory product.
We have three tunnel kilns for silicon-aluminum dense bricks and one new plant for the monolithic refractory.
We're sure our custom-made products and professional services will bring you a stable quality supply and more profit.
Our Laboratory and R&D Center
We have test equipment for the following items:
chemical %
bulk density
apparent porosity
cold crushing strength
modulus of rupture
refractoriness under load
creep
thermal expansion
Reheat linear change
thermal shock resistance
thermal conductivity
Contract Kiln Construction
FAQ
1. Are you a Manufacturer or trader?
A: We are manufacturer and our plant is located in Xinmi city, Henan, China
2. Can we visit your company?
A: You are warmly welcome to visit our company at anytime, you'll not regret of the visiting.
3. Do you accept OEM?
A: Yes, we do OEM.
4. What's the MOQ of trial order?
A: We care about all the potential customers and take all the trails orders.
5. What is the payment term?
A: TT, LC, DP, DA.
6. How long is the delivery time?
A: Usually within 35 days after down payment.
7. Do you accept third party inspection ?
A: Yes for sure, we accept the third party inspection before delivery.
8. What is your after-sell service?
A: The rejected goods can be replaced or we can make compensation for it. We can send technical engineers to the end user for technical issue.
9.What is your company's certification?
A: ISO9001 certificate
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