Kiln Refractory Brick Bulk Density of ≥2.83 Alumina Magnesia Carbon Brick for Results

 The technical datas of refractory brick for ladle and refining furnace

The description of refractory brick for ladle and refining furnace

Magnesia-carbon bricks are made of high-melting alkaline oxide magnesium oxide (melting point 2800°C) and high-melting carbon materials that are difficult to be infiltrated by slag, and various non-oxide additives are added. A non-burning carbon composite refractory material combined with a carbon binder. refractory brick for ladle and refining furnaces are mainly used for lining of converters, AC electric arc furnaces, DC electric arc furnaces, and slag lines of ladle.

As a composite refractory material, refractory brick for ladle and refining furnaces effectively utilize the strong slag erosion resistance of magnesia and the high thermal conductivity and low expansion of carbon, which compensates for the biggest disadvantage of poor spalling resistance of magnesia. Magnesium carbon brick forms magnesium skeleton when used at high temperature. Because magnesium oxide and carbon do not produce mutual solubility relationship, the excellent fire resistance of the original component is retained, and the thermal conductivity of carbon is good, and the thermal expansion coefficient and elastic modulus are low ,  and it can effectively prevent high temperature spalling and slag penetration, so that structural spalling does not occur, greatly changing the fatal weakness of the metamorphic structure caused by the slag penetration of the magnesia refractory material, combined with the non-wetting property of carbon to the slag, and the corrosion resistance is very good.

The use of refractory brick for ladle and refining furnace

refractory brick for ladle and refining furnaces refer to carbon-containing magnesia non-burning shaped products used in converter lining, electric furnace lining, ladle slag line, ladle lining and refining outside the furnace, mainly including refractory brick for ladle and refining furnace, aluminum refractory brick for ladle and refining furnace and magnesia aluminum carbon brick .

Application of refractory brick for ladle and refining furnace on converter

refractory brick for ladle and refining furnaces According to the above analysis, the temperature of the furnace mouth and the furnace cap changes drastically, and the slag corrosion is severe. The refractory brick for ladle and refining furnace with good thermal shock resistance and strong slag resistance should be selected. On both sides of the trunnion, except for the damage caused by blowing, the surface is covered with no protective slag layer, which is difficult to repair. The carbon in the brick is easily oxidized, and high-quality refractory brick for ladle and refining furnace with good slag resistance and good oxidation resistance should be built. The slag line is in contact with the slag for a long time, and the slag is severely damaged. It is necessary to build a refractory brick for ladle and refining furnace with excellent slag resistance. The splashing effect of slag and molten steel on the charging side is easy to cause chemical attack, abrasion, erosion and direct impact and erosion when loading scrap steel and molten iron. It should be used with strong slag resistance, high temperature strength and thermal shock resistance. Good magnesium carbon brick. The bottom of the hearth is lighter than other parts, and ordinary refractory brick for ladle and refining furnaces can be used. When the top-bottom composite blowing technology is adopted, especially when the gas such as CO2 and O2 is blown at the bottom, the damage is more serious. High-grade refractory brick for ladle and refining furnaces with good oxidation resistance and thermal shock resistance, high temperature strength and high slag resistance should be selected. According to the characteristics of the furnace body damage, different grades of refractory brick for ladle and refining furnaces are used to form a comprehensive furnace lining.

Its main features of refractory brick for ladle and refining furnace

The production process of refractory brick for ladle and refining furnace

refractory brick for ladle and refining furnace production process 1-crushing

The purpose of crushing in the process of producing magnesia-carbon bricks is mainly to prepare raw materials of various sizes. Increase the specific surface area of the material and destroy the crystal lattice of the material, causing it to produce defects, thereby speeding up the physical and chemical reaction of the material.

refractory brick for ladle and refining furnace production process 2-proportioning raw materials

The gravimetric batching method is usually used in the production of refractory brick for ladle and refining furnaces, because the gravimetric batching method has high accuracy, generally not exceeding 2%. Commonly used weight batching equipment includes manual weighing scales, automatic weighing scales, weighing carts, etc. The corresponding equipment is selected according to requirements and automatic control levels.

refractory brick for ladle and refining furnace production process 3-preparation of mud (mixing, kneading)

 The purpose of mixing is to make the composition of the materials uniform and maximize the contact surface between different materials. The mixing of refractory materials is a method to homogenize the materials with the process of extrusion, kneading and exhaust. Like the mixing of any powder, the mixing of refractory materials is gradually carried out, and the mixing process is more complicated due to the composition, particle size, binder and admixture of the materials.

refractory brick for ladle and refining furnace production process 4-forming

 The purpose of forming is to densify the structure of magnesia-carbon bricks. Since magnesia-carbon bricks are formed by a semi-dry method, they must be formed under high pressure. Due to the small particle size of the mud used for molding and the high content of graphite, the molding must be performed in strict accordance with the regulations, otherwise cracks or delamination are likely to occur. It should be light first and then heavy, pressurize several times, slow down the exhaust with the light hammer, and slowly raise the pressure with the heavy hammer.

refractory brick for ladle and refining furnace production process 5- heat treatment (drying)

The heat treatment process of refractory brick for ladle and refining furnaces not only includes the discharge of water, but also a series of physical and chemical changes, so we call this process heat treatment.

 Packaging of refractory brick for ladle and refining furnace

 Shipping of refractory brick for ladle and refining furnace

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. 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.

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