Gas Purging Porous Purge Plug for Molten Metal Casting Processes

• Customization: Available
• Feature: Chemical Corrosion Resistance, Corrosion Resistance, Good Abrasion Resistance, Good Insulation Performance, High Mechanical Strength, High Melting Point, Thermal Shock Resistance
• Production Process: Casting High Temperature Firing
• Model NO.: SN-PL
• Refractoriness (℃): 1580< Refractoriness< 1770
• Shape: Block
• Product Name: Gas Purging Porous Purge Plug for Molten Metal CAS
• Type 1: Slit/Slot Type Purge Plug
• Type 2: Porous Purge Plug
• Type 3: Segment /Plate Purge Plug
• Type 4: Preassembled Purge Plug and Well Block
• Types: Cleaning Plugs and Related Systems
• Metallurgical Needs: Different Refining Processes (Rh, Lf, Vd, VOD, Va
• Raw Material of Slit Type: Chromite Corundum Spinel or Corundum Spinel
• Main Feature: High Blowing Rate
• Advantage: Easyier for Operation Control During Refining Proc
• Flow Rate Range: 12%-20%
• Al2O3/(%) Content: Not Less Than 85%
• Al2O3+MGO+Cr2o3 /(%): Not Less Than 93%
• Bubulk Density/(g/cm3): Not Lower Than 3.0
• Application: Core Components for Refining and Post-Furnace Trea
• Transport Package: Fumigation Free Wooden Cases
• Specification: Corundum or Corundum Spinel, Chromite corundum
• Trademark: SINOREFRACTORY/SNREF
• Origin: Shandong, China
• HS Code: 69032000
• Production Capacity: 30 0000 Tons/Year
• Package Size: 126.00cm * 116.00cm * 90.00cm
• Package Gross Weight: 1904.000kg

Product Description

Gas purging porous purge plug for molten metal casting processes

Product Description

In steel-making today, gas blowing in a ladle is indispensable for improvement of steel quality and for continuous casting.

In metallurgy, it can be used in the process of molten metal treatment.
It helps in removing gases or impurities from the molten metal by allowing the purging gas to pass through.

SNREF purging plug is characterized by their high strength, good erosion resistance and corrosion resistance, high blowing rate and good safety. They are widely used for continuous casting ladles and refining ladles.

Hot Sales Types

A purge plug works in the following ways:

 

In systems like molten metal handling, it is inserted into the relevant container. A purging gas is then forced through the purge plug. The gas passes through small openings or channels in the plug.

 

When used with molten metal, the gas forms fine bubbles as it emerges. These bubbles ascend through the metal. Along the way, they attract and carry away unwanted gases and impurities that are dissolved or suspended in the molten metal. This purging process helps refine the metal.

-Slot Plug(slit plug)

Slot plug is the most common structure in purging plug.
The gas channel could be designed and customized according to actual on-site using conditions, including refining steel grade,
refining workmanship, ladle capacity, temperature, hydrostatic pressure of liquid steel etc.
This can achieve the best blowing effect for purging plugs, ensure the longest service life, safety, stability and best air
permeability.
-Porous plug
Porous plug has better porosity and permeability.
Production technology is adding carbon-containing compound into mixture, since carbon-containing compound can burn out without
residue at low temperature, so we adopt low temperature burning out intermediate materials to get the initial porosity.
In porous type plug, inside distributes interpenetrating gas channels in different sizes.
When blowing stop, the steel and slag from ladle will infiltrate into the deep areas of the plug, to form a secure layer on working surface.
-Segment Plug
The segment plug is preferably made of good anti-stripping materials, the block body is not easy to occur fracture, with longer  service life. The cracks between different plates will not expand, so this segment plug design can avoid failure of bottom blowing  caused by tranverse brick fracture.

Application characteristics: In order to adapt to more and more strict refining conditions(especially special steel), and to meet the requirements of increasing  ladle life, the volume of plug becomes bigger and bigger. However the traditional slit type plug has single material and single  structure, easy to cause the phenomenon of tranverse fracture and failure of air blowing. Our researched segment plug has successfully soved the problem of fracture existing in traditional slit plug. Significantly increasing  the stability of refining process, ensuring the realization and improvement of quality refined steel.
-Hybrid Plug
Secondary refining technology is the most important part in steelmaking process
It can adjust the steel alloy type and liquid temperature.
Purging plug and block is the key functional component to make this process carried out.

As the ladle tends to develop in larger scale, the melting temperature and time have been improved significantly, which makes the
using environment for refractory materials more and more strict. Therefore, it is necessary to further improve the performance of
purging plugs and blocks to meet the increasing demands in current steelmaking technology

-Overall breathable brick:
This product adopts high purity raw materials, through vibration casting and low temperature heating process workmanship.
Function is blowing argon gas via purge plug to ladle.
With the feature of high strength, good thermal stability, erosion resistance and abrasion resistance.
Widely used in steel plants LF, LF-VD, CAS-OB refining ladle
We manufacture various high-quality ladle refractory according to the clients' needs , and to ensure the stability and accountability of the quality.

Product Parameters

Technical data will be customized according to your steel making condition.

Chemical and Physical Properties	SNLWB-85	SNLWB-90	SNLWB-95
Al2O3 +MgO    %          min	85	90	95
Cr2O3 (C)   %             min	0	2.5	2.5
Apparent porosity g/cm3%   max	15	13	13
Bulk density  g/cm3   %     min	3.0	3.05	2.9
Normal temperature Compressive strength (MPa)            min	80	100	100
Breaking strength   1500°C×3hmin	23Mpa

Well block and segment plug

Chemical and Physical Properties		(Well block)	(purging plug)
AL2O3 %		>=85	>=85
MgO%		3-5	1-3
Cr2O3 %		-----	>2.4
Bulk density  g\cm3		>=3.0	>=2.9
Apparent Porosity  %		<=16	<=18
Cold crushing strength  Mpa	110ºC*24h	>=60.0	>=80.0
	1500ºC*3h	>=100.0	>=80.0
Refractoriness under load : ºC		>=1680	>=1680
Modulus of rupture 1400ºC *1h Mpa  Mpa		>=15.0	>=15.0
Linear change 1500ºC*3h %		±0.2	±0.2
air permeability, m3/hour at P=4 bar		30M3/H

Packaging & Shipping

Product packaging
1- International standard seaworthy exportable packing.
2- Wooden pallet.
3- Wooden / bamboo case (box).
4- Further packing information will be based on customer's requirements.

Company Profile

Shandong Sinorefractory New Materials Co., Ltd (SinoRefractory) has been focusing on international
marketing of flow control refractories in iron and steel industry for 18 years.

Started in year 2007, sinorefractory is the second generation of refractories export enterprise developed
from Emei group, supported by one of China's largest production bases in functional refractory materials.
Through years of development in the field of functional refractory materials, sinorefractory aims at
researching, marketing and exporting premium quality slide plates, nozzles, well blocks, purge plugs,
nozzle filling sand, refractory castables, slide gate mechanism, tundish refractories to global markets.

In 2021, Sinorefractory was spun off from Emei group.

In 2022, in order to expand into broader product areas and commit to becoming a high-end refractory
materials supplier, Sinorefractory became an affiliated enterprise of Sinosteel Luoyang Institute of Refractory
Research. Following the establishment of this strategic collaboration, sinorefractory has achieved significant
advancements in new product area development, technical support and market expansion.

 

FAQ

Below are some RFQ and answers about ladle and tundish flow control refractories:

Q: What are the requirements for refractories for ladle?
A: The requirements of refractories for ladle mainly include:
 * high temperature resistance
 * thermal shock resistance
 * resistance to the erosion of the slag
 * high temperature with sufficient mechanical strength
 * the lining has a certain degree of expansion

Q:What are the reasons for the destruction of refractories for ladle?
A: The main causes of damage are as follows:
When the ladle transports high-temperature molten steel, the high-temperature molten steel and slag at about 1680ºC scour and erode it, especially in the slag line part, the scouring and erosion is more serious, and it is an important factor to decide the service life of the ladle.
LF and other extra-oven refining treatment on the unburnt brick damage is serious.

Q:What steel grades are different materials of slide plate bricks suitable for respectively?
A: Different materials of slide plate bricks are applicable to different steel grades. For example,
Al2O3-ZrO2-C slide gate plate can be used as ladle sliding gate plate due to its excellent erosion resistance and thermal shock stability, which can adapt to the casting of various steel grades, and ther are the following materilas based on customer's steel making condition: the MgO-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, and so on.
 
For more details, feel free to send inquiry to us.