Henan Hongtai Kiln Refractory Co.,Ltd.
PROFESSIONAL MANUFACTURE REFRACTORIES FOR FURNACE ！
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China Supply steel ladle
porous plug for Steel Continuous Casting
Description of steel ladle porous plug
Purging plugs are made from high-purity, high-density, high-strength corundum based materials and a matrix-adjusted system and have unique radiated through-slots structure. They feature in a stable structure,high and adjustable gas-flow,high purging rate,good corrosion resistance and long service life
| Item Brand | Chrome Corundum | Corundum Spinel | Corundum |
| Al2O3(%) | ≥90 | ≥90 | ≥92 |
| MgO(%) | ≥3.5 | ||
| Cr2O3(%) | ≥2.0 | ||
| Bulk Density(g/cm3) | ≥3.0 | ≥3.0 | ≥2.95 |
| Cold Crushing Strength(MPa) | ≥90 | ≥90 | ≥50 |
| Refractoriness Under Load(℃) | ≥1700 | ≥1700 | ≥1650 |
Factors influencing the effect of steel ladle porous plug
The quality of the use of argon-blown air-permeable bricks at the bottom of the ladle is very important to steel manufacturers, and unfavorable factors should be avoided or dealt with as much as possible during use. The main factors affecting the effect of argon-blowing ventilating bricks at the bottom of ladle are as follows:
1. Permeable brick working surface seepage steel
The working conditions of the breathable bricks are very harsh. The static pressure of the molten steel in the large ladle is large, and the required stirring strength is also large. Therefore, the key to ensuring the ventilation rate is that the breathable bricks have strong anti-seepage steel ability. In the production practice of steel manufacturers, the working surface of ventilating bricks often forms steel, so it is necessary to clean the working surface with an oxygen lance. If the slit-type ventilating brick is not cleaned, it will easily occur that the ventilating brick is not ventilated.
2. Steel ladle porous plug (slit type) is blocked by molten slag
After the ladle is continuously cast, the working surface of the ventilating brick is fully in contact with the slag, and the slag will continuously infiltrate the interior of the ventilating brick. As the temperature of the ladle decreases, the viscosity of the steel slag continues to increase, and the slit passage of the ventilating brick is likely to be blocked. As a result, the amount of air blown at the bottom of the ladle is small or airtight.
3. Material changes
steel ladle porous plug are multi-element and multi-phase composite materials with structural features such as particles, mechanical properties, interfaces, and pores. The main chemical composition of the air-permeable brick is alumina, followed by a certain amount of magnesium oxide. Due to the different chemical composition, the density, compressive strength, and flexural strength of the air-permeable brick will be different.
4. Air source pressure fluctuation
In the actual use of the ventilating brick, the argon gas supply pressure will fluctuate due to many reasons. When the argon gas pressure is too low, the molten steel cannot be blown and the bottom blowing fails; when the argon gas pressure is too high, the molten steel will easily turn up severely. After contact with air, the molten steel will be oxidized again.
5. Long package suspension time
When the ladle is stopped for too long, the baking time is insufficient or not baking, the temperature of the inner lining of the ladle is not enough. After the steel is connected, the temperature of the molten steel at the bottom of the ladle is low, and the cold steel is attached to the bottom of the ladle, which hinders the blowing of the ventilating brick at the bottom, resulting in ventilation failure.
Packing of steel ladle porous plug
1.on wooden pallets with plastic cover: wooden pallet size :930*930 or 1000*1000mm,
2.Load weight of each pallet: 1.5-2.0 tons,
3.230*114*65mm:512PCS/Pallet, 230*114*75mm:448PCS/Pallet.
Shipping of steel ladle porous plug
1.Our packaging is as per customer’s request
2.Normal goods delivered by sea transport
3.Sample shipping by express
4.We will shipping and delivery goods timely, quanlity and quantity guaranteed, and also in accordance with the contract and customer's requirment completely.
1. Strong professional:
Our company has thirty years producing experience in refractory products. Our manager will supervise on a various refractorys production materials, process control, quality supervision and package delivery, and ensure the products are 100% qualified.
2.Annual supply:
Our company has passed ISO9001 quality management system certification and SGS certification. And the annual supply of shaped and unshaped refractory product is 28, 800-35, 000 tons.
3. Export experiences:
Now we have gained a global sales network reaching Taiwan, Russia, Vietnam, Pakistan, Bulgaria, French, India, Congo, Angola, South Africa, and so on.
4. Production equipment:
Production and testing equipments are new, complete and automated or semi- automated. Such modern facilities and equipments have provided the fine technical guarantee for the production and testing.
5. Testing equipment:
Our company's testing equipments as follows:
High Temperature RUL Tester
Bulk Density Tester
The Pressure Tester
Refractoriness Tester
Certificates
1. How can I get your prompt quotation?
We can give you reply with quotation quickly if you kindly send the inquiry with the detail, such as the quantity, the specifications and the application of the products.
2. What is the MOQ (minimum order quantity)?
No limit
3. Which payment terms can you accept?
T/T,LC,Western Union,moneygram are available for us.
4. After an order is placed, when to deliver?
15-25days after confirming the order.
5. Does your company accept customization?
We accept OEM service.
6. How to solve the quality problems?
If the products don't conform to customer's samples or have quality problems, our company will be responsible to make compensation for it based on enough evidences.