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1,Description of Chromium Corundum Castable for Electric Furnace Top:
A small amount of chromium oxide raw material or high quality chromium ore is added to corundum cas table to form corundum phase and chromium corundum phase structure in the process of high temperature use. It has better chemical inertia, high temperature resistance, wear resistance and corrosion resistance, and has superior use effect.
2,Index of Chromium Corundum Castable for Electric Furnace Top:
Model | JDR-85 | JDR-88 | |
Item | |||
Chamical composition % | Al2O3 | ≥85 | ≥88 |
Cr2O3 | 2-5 | 2-5 | |
CaO | ≤1.5 | ≤1.5 | |
Bulk density g/cm³ | 110℃*24h | ≥2.95 | ≥3.00 |
1500℃*3h | ≥2.90 | ≥2.95 | |
Crushing strength MPa | 110℃*24h | ≥80 | ≥80 |
1500℃*3h | ≥100 | ≥110 | |
Linear change rate % | 1500℃*3h | ±0.5 | ±0.5 |
3,Application Knowledge of Chromium Corundum Castable for Electric Furnace Top
1)In the process of high temperature application, Cr2O3 transfers to the slag, which improves the viscosity of the slag, thus inhibiting the further penetration and erosion of the slag to the product.
2)Al2O3 and Cr2O3 form solid solution at high temperature, which improves the high temperature performance and corrosion resistance of products.
3)Because of its good high temperature stability, the products are widely used in electric furnace roof, Top Cover of Electric Furnace, refining furnace, melting furnace, carbon black reaction furnace, incinerator.
4,Application of products in carbon black reactor:
The temperature of carbon black reaction furnace is as high as 1925℃.It is correct to choose Cr2O3-rich chromium corundum castable products,the melting point of this castable is as high as 2275-2300℃.The product uses synthetic compact chrome corundum sand as the main raw material,and adds Al2O3 and Cr2O3 ultrafine powder to form high performance duplex phase in the process of high temperature use,which increases the working temperature by 150-170℃,effectively improves the use effect and prolongs the service life.Masonry of products with Cr2O3≥70% in carbon black reactor,at lower operating temperature, the product with lower Cr2O3 content is used for masonry,Such use not only reduces the cost,but also ensures the overall service life of the furnace.
5,Packaging and Storage:
Packed in waterproof and moisture-proof kraft paper bags,stored in dry environment for more than 6 months.
6.Good feedback of product use effect,the products have been exported to Pakistan, Russia, Australia
7.The manufacturer is a professional manufacturer and can provide complete product index test reports or third-party test reports.
Do you want to find a professional supplier of castable products?
Do you want to find a stable and credible supplier?
Then please contact with us
Contact me:Email:wp@cnjingganrefractory.com/sdwenping@163.com
TEL: 86-0533-4188518 / FAX: 86-0533-4188518
Rose:+86-13275332819(wechat/whatsapp number)
We know that we only thrive if we can guarantee our combined price competiveness and quality advantageous at the same time for Additive Flame Retardant Aluminium Dihydrogen Phosphate Mono Aluminium Phosphate. We believe that our social responsibility is first of all to run the company well, to abide by the law, and to provide high-quality products and services. We have built a management team that is good at innovation and hard work.
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