SNREF Half Ball Shape High Quality Alumina Carbon Tundish Nozzle for steel making Refractory
Product Description
Tundish Nozzles usually comprise a zirconia inner nozzle (often referred to as a "zirconia insert") with a lower grade outer body such as Alumina Bauxite, often be called Outer Alumina Carbon material.
1.Ladle Nozzles
Adopting tabular corundum, white corundum, silicon carbide, metal aluminium, high quality magnesite as main materials. Choosing good anti-oxidation flake graphite as carbon source, adding small amount antioxidant to increase oxidation resistance. Using phenolic resin as bonding which obtains high solid content and high carbon residue.After forming and shaping, process pitch impregnation according to using conditions.
With features of good thermal shock resistance, high temperature strength, anti-erosion, anti-scouring, long service life and wide range application.
| Raw material |
Tabular corundum, fused alumina, fused alumina zirconia, zirconium mullite |
| Forming technology |
Through the addition of moderate micro and fine metal powder, by reaction under high temperature, to increase the performance of plates under h igh temp.
Through adding of moderate boron carbide powder to increase the oxidation resistance of plates.
The bonding agent is phenolic resin with high solid content and high carbon residue. |
| Heat treatment technology |
After forming, adopting advanced heating treatment technology, through graphite immersion, high temperature burning to form high strength slide plates. |
| Characteristic |
With features of good thermal stability, excellent erosion resistance, stable consistency in shape and size. |
| Application |
Suitable for ladles over 180 tons or converter slagging slide gate systems. |
2.Feature of our slide plate, nozzle and well block:
1.Excellent thermal stability
2.High temperature strength
3.Resistance to molten metal and slag
4.Consistency in shape and size
5.Ability to sustain mechanical treatment without detriment to the surface integrity
3.Our nozzle:
SNREF Products used in Tundish can be offered to you as follow:
Tundish metering nozzle
Non swirling tundish nozzle
Tundish upper nozzle
Tundish lower nozzle
Tundish slide plate
Quick-exchange tundish nozzle
Ladle shroud
Subentry nozzle/ submerged entry nozzle
Monoblock stopper
4. Application:
Tundish upper nozzle It is located within the tundish lining and conveys steel to the controlling exchangeable nozzle, which determines the steel flow. The stationary nozzle must be capable of withstanding long sequence times. SNREF Upper nozzle that incorporates a ultra-high insert. The insert provides excellent erosion resistance and can provide extended casting sequence times. The lower surface of the stationary nozzle is ground to exacting tolerances to ensure maximum surface contact between the two nozzle components. Tundish lower nozzle It is located within an assembly that is fixed to the bottom of the tundish.The design of the exchangeable nozzle can vary according to the system manufacturer. We supplying a range of zirconia inserts and composite nozzle designs for the exchangeable metering of steel. Zirconia inserts can be supplied for on-site assembly into metallic holding blocks where cementing, grinding, size banding and on site drying are required prior to use. It was manufactured by both cast process of fine grained alumina method or presse process.
Product Parameters
| Workmanship |
Casting |
Pressed |
| Al2O3 |
92% |
80% |
| MgO |
4% |
|
| SiO2 |
- |
|
| C |
- |
3% |
| Bulk Density |
3.1g/cm3 |
2.85g/cm3 |
| Apparent Porosity |
20% |
14% |
| CCS |
- |
- |
1. Tundish Nozzle
Chemical and Physical Properties |
LQTN-
AlC75 |
LQTN-
AlC80 |
LQTN-
Al75 |
LQTN-
Zr96 |
LQTN-
Zr65 |
Al2O3 ≥ % |
75 |
80 |
94 |
-85 |
- |
ZrO2 ≥ % |
- |
- |
- |
(Insert)
92-96 |
65 |
C ≥ % |
4 |
4 |
- |
- |
- |
Apparent porosity ≤ |
8 |
7 |
15 |
9 |
20 |
Bulk density g/cm3 ≥ |
2.90 |
2.95 |
2.95 |
3.05 |
3.5 |
Compressive strength (MPa) ≥ |
60 |
60 |
120 |
80 |
- |
High temperature bending
strength (MPa) (1400*0.5h) MPa ; ≥ |
6 |
7 |
15 |
20 |
- |
2. Zirconia insert
Chemical and Physical Properties |
LQZr60 |
LQZr70 |
LQZr80 |
LQZr85 |
LQZr95 |
ZrO2 ≥ % |
60 |
70 |
80 |
90 |
95 |
Apparent porosity ≤ |
21 |
20 |
18 |
15 |
6 |
Bulk density g/cm3 ≥ |
3.70 |
3.90 |
4.0 |
4.35 |
5.2 |
Refractories ≥ C |
1800 |
1800 |
1850 |
1900 |
1900 |
Detailed Photos
Realted products:
Metering tundish nozzle refractory:
Zirconia insert plate ring products for tundish nozzle and ladle slide gate plates:
CNC quick changer tundish nozzle plate:
Application
In steelmaking, ladle nozzles are installed at the bottom of ladles. After the molten steel is refined, they control its release.
During continuous casting, when transferring the molten steel to the tundish, they ensure a steady and precise flow, which is key to process stability.
In non-ferrous metal production like aluminum and copper, ladle nozzles have a similar function. In aluminum casting, when molten aluminum moves from the furnace to the molds, the nozzles regulate the flow for even filling, helping to produce high-quality castings. In copper smelting and casting, they direct the flow between stages to ensure smooth production.
Moreover, in cast iron foundries, ladle nozzles are crucial for pouring molten iron into molds. They enable the iron to be poured at the right rate, reducing the risk of defects such as cold shuts and porosity. The nozzle design and performance directly affect the quality of cast iron parts.
Overall, ladle nozzles are vital for improving the efficiency and quality of metal production.
Company Information
Shandong Sinorefractory New Materials Co., Ltd (SinoRefractory) has been focusing on international marketing of flow control refractories in iron and steel industry for 17 years.
SinoRefractory is the second generation of refractories export enterprise developed out of EMEI Group. Supported by one of China's largest production bases in functional refractory materials.
Through years of development in the field of exporting top quality refractories to worldwide markets, SinoRefractory aims at researching, producing, marketing and exporting high standard Ladle slide gate plate, Ladle Nozzles, Well blocks, Purging plugs, Nozzle stuffing sand, Refractory castables, Slide gate Mechanisms etc.
Up to now, SinoRefractory has supplied high quality refractory products and services to nearly 70 top-hundred global steel enterprises.
SinoRefractory will always put clients'interest in the first place, striving to provide a wide range of services, including technical solution, pre-sales support, after-sales services, installation team support, professional know-how according to the changing of steelmaking condition, etc.
We are not only selling products, we are more focused on supporting, developing and growing together with clients.
TESTING LABORATORY:
Packaging & Shipping
We can provide comprehensive transportation solutions, including
sea freight, express delivery, and air freight.
In terms of sea freight, we can provide reliable transportation for your goods. Whether it's full container load (FCL) or less than container load (LCL), our professional team carefully handles every step of the process, from booking space, arranging correct loading and bundling of goods at the port of origin, to ensuring seamless customs clearance and timely delivery at the destination port.
In terms of express delivery, our express service covers door-to-door pickup and delivery, especially suitable for urgent and small packages that need to arrive quickly and on time.
In terms of air freight, This provides a quick option for transporting your goods.
No matter which mode of transportation you choose, our commitment is to provide you with the highest quality service and ensure the efficient and safe transportation of your goods.
FAQ
Q 1:How can I receive best materials or products for my application ?
A: Please send drawing and steelmaking condition to us for evaluation.
Our technical team will recommend suitable formula and workmanship,
our sales team will offer most competitive prices accordingly.
Our "Technical+Sales" team will work on to provide optimum product recommendation for clients.
Q 2:Is the recommended life time guaranteed by SNREF ?
A: Taking into comprehensive consideration base on steelmaking situation and SNREF's product experience, we'll
offer recommended life time of products.
However SNREF doesn't guarantee the life time.
For first time cooperation, SNREF recommends a trial order for testing.
Trial order offers us chance to adjust formula base on actual performance.
SNREF will offer best technical support and expedited delivery for trial order.
Q 3:Can SNREF's refractories work well for my system from other brands?
A: With years of experience in exporting. SNREF has successfully provided refractory materials to a wide range of overseas markets including Asia, North Amercia, South America, Middle East, CIS area etc.
We are experienced with various types of systems.
SNREF is capable to offer consistent and high performance refractory materials to clients worldwide.
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