Checker Brick ,Refractory Brick

Checker Brick 

 

High Aluminum checker brick include high refractoriness, large volume density, high intensity and high refractoriness under load. They also have good creeping in high-temperature, excellent regenerative capability. 

Semi-graphitic Carbon Block

Semi-graphitic Carbon Block

• Details

It is mad of high temperature' electrical calcined anthracite as main a material, medium temperate pitch as binder, through forming, high temperature baking, final precision machining.

It features good thermal conductivity and alkaline resistance.

It is economic and practical, and mainly applied for blast furnace bottom.

Mullite Insulating Firebrick

Mullite Insulating Firebrick

This series of products adopt high-purity raw materials and unique technology to furthest avoid impact of impurities and structure defect to product performance, featuring in extreme excellent high-temperature volume stability, thermal shock resistance, high strength, low heat conductivity coefficient, with extensive adaptability to various furnace types and environment conditions. This product can be used as furnace lining (away from erosion of fusion liquid) and insulating layer in many industries like metallurgy, machinery, ceramics and chemicals, which is an ideal energy-saving product.

Construction of Refractory Castable

During the construction of refractory castable, special attention should be paid on pin welding, asphalt brushing, stirring of castable with water, making and fixing of mould, vibration and ramming of castable, demoulding, sizes’ and measuring points’ accuracy, etc. http://www.yilongrefractory.comDo construction strictly as material manufacturer and boiler works required.

1. Installation of Pin and Claw Nails

Reinstall the pins missing for any reason and the pins in the area of heating surface composite melding junction before hydraulic pressure. Lengthen and reinstall the pins properly in coal mouth, material return mouth and upper inflection point of air duct furnace so that meets the required density of pins. Brush all the pre-buried metal parts and claw nails with asphalt paint (thickness > 1mm) or cover them with combustibles before casting.

2. Dosing and Stirring of Castable & Water

The dosing of castable and water should be done strictly as the instructions of material manufacturer. The water should be clean, such as drinking water, ph 6-8. The mixer should be clean forced action mixer, and clean it for the next time using. Pay attention on the adding order of castable and water and its stirring time, adding water freely and prolonging of stirring time are forbidden. The water and castable should be mixed evenly and stirred till smooth. Carry away the mixed casatble immediately after stirring, the castable poured out from stirring tank is disallowed to be poured into the tank and stirred again. Clean the tank after every construction for the next using, record the amount of water and castable, and the stirring time.

3. Checking Before Making Template

Check carefully whether the pin, hook nail and strutting part conform to the drawing, whether all the re-welding and is done and firm, whether the temporary metal parts have been cut off. Check whether the metal parts which should be brushed with asphalt paint meet the requirement, whether the casting place is clean, any other unrelated materials are forbidden to appear. For easy demoulding, a thin tier of partition (such as used oil) can be brushed in the mould. There can not be gaps between each two templates to avoid castable leaking out, so that also convenient for mould releasing. The refractory castable should be used up in 30 minutes after stirring, and should be casted to the required thickness in 1 time. Ram the castable till tight. For the too thick parts, cast tier by tier, while casting the upper tier, vibration bar can not touch the lower casted tier.

The Ways to Protect Refractories and Improve Service Life of Lalde

The MgO in slag is eroded usually by furnace lining while making steel. In the process of smelting, the slag and refractory materials will get touched; MgO concentration in slag should almost reach saturation. There is a close relationship between the content of saturated MgO and CaO/SiO_2. For slag with low alkalinity (CaO/SiO2<2.0), the higher the proportion of FeO is, the lower proportion of saturated MgO. When FeO content is low and saturated MgO content is high, the slag will erode more refractories. While for slag with high alkalinity (CaO/SiO₂ >2.0), the saturated MgO content will not be seriously affected by the FeO content, what’s more the slag will not erode much more refractories. Therefore, improve slag alkalinity can strongly protect refractories.

The service life of ladle is directly influenced by refining time, so it is important to improve steelmaking technology so that to shorten smelting time.

The service life of ladle will be reduced by 3-5 heats once shut down, so to achieve efficient production, the key is shortening smelting cycle. On the premise of using advanced technology to guarantee the best steel quality and the lowest total consumption, shorten the smelting cycle to the minimum, improve equipment and shorten shut down time.

Checker Brick ,High Alumina Checker Brick,Refractory Brick,Firebrick

Checker Brick

Introduction

High Aluminum checker brick include high refractoriness, large volume density, high intensity and high refractoriness under load. They also have good creeping in high-temperature, excellent regenerative capability.

Lining Material,Furnace Lining Material,Lining Material Refractory,Refractory Material,Refractorty Products

Lining Material

This company lining material produces the lining material is called "mixed sand" for short. This product is the main refractories of the medium frequency induction furnace used by the small steel enterprises. Its effect is in leading position