One of the main uses of graphite is the production of refractory materials, including bricks, crucible, continuous casting, casting mold, mold powder, detergent and high temperature resistant material. In recent years, two important changes in the refractory industry is MgO-C brick is widely used in steelmaking furnace lining, and the application of aluminum carbon brick in continuous casting process. The graphite refractories and steelmaking refractories are closely linked, the world steel industry about consumption.

1 Introduction

Because of its excellent properties, graphite has been widely used in metallurgical, mechanical, electrical, chemical, textile, national defense and other industrial sectors. Can be used as refractory material. Graphite products keep the original chemical properties of flake graphite and also have strong self lubrication property. The characteristics of graphite powder is of high strength, corrosion resistance and acid resistance of the high temperature of 3000 DEG C and resistance to low temperature of -204 DEG C, and its compressive strength is greater than 800kg/Cm2, and the antioxidant, at 450 degrees Celsius in the air was 1%, rebound rate of 15-50% (density 1.1-1.5). Graphite products have been widely used in metallurgy, chemical industry, petrochemical industry, high energy physics, aerospace, electronics, etc..

2 Efficacy and advantages

Graphite products have good adsorption.

The carbon structure of the carbon has a good adsorption, carbon is often used as an adsorption material for adsorption of water, odor, toxic substances, etc.. We have done experiments, a few days before the barbecue pan graphite used looks very clean, but in the electromagnetic oven heating, will see the last barbecue oil and the adsorption of harmful substances will slowly leaking, but don't worry, with a clean kitchen paper to wipe clean can use.

Two, graphite products with good thermal conductivity, heat transfer, uniform heating, fuel saving.

Made of graphite pan pan, fast heating, and the firing of the food is heated evenly, from inside to outside and cooked, the heating time is short, not only pure taste, but also can lock the nature of food nutrition. We have done experiments with graphite oven barbecue, beginning the electromagnetic oven hit the fire, only 20-30 seconds to start preheating, roasting food can play as long as the small fire, the use of energy saving.

Three, graphite products with chemical stability and corrosion resistance.

Graphite has good chemical stability at room temperature, without any erosion of acid, alkali and organic solvent. Therefore, graphite products, even if the loss of long-term use is also very small, as long as the clean as new.

Four, graphite products have a strong anti oxidation and reduction.

In particular, the graphite mattress can be heated to produce negative oxygen ions, so that the surrounding items active, maintain human health, effectively prevent aging, so that the skin is full of luster and elasticity.

Five, graphite products environmental health, no radioactive pollution, high temperature resistance.

Carbon in 2000-3300 high temperature environment only after graphitization of at least a dozen days into graphite, therefore, graphite in toxic and harmful substances already released and exhausted, at least in less than 2000 degrees is stable.

3 main applications

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Graphite products can release far infrared after heating.

Magnesia MgO-C refractories is successfully developed by the United States in the mid-1990s, in the 1980s, Japanese steelmaking began to magnesia bricks used in water cooling in eaf. At present in the world within the scope of MgO-C brick has been widely used in steelmaking, and has become a traditional use of graphite. In the early 1990s, MgO-C brick began to lining the oxygen top blowing converter.

Aluminum carbon brick aluminum carbon refractory material is mainly used for continuous casting slab, a pipeline of Fort Hood, water and oil tube blasting nozzle. Steel produced by continuous casting in Japan accounts for more than the total production.

Using graphite crucible and crucible forming manufacturing related products and refractory and related products, such as crucible, retort, plug head and nozzle etc., with high fire resistance, low thermal expansion, metal smelting process, by metal infiltration and erosion are stable under high temperature, thermal shock stability good and excellent so the conductivity, graphite crucible and related products are widely used in the process of direct molten metal. Flake graphite carbon made of graphite is larger than the traditional clay crucible, graphite flake usually should be greater than (- mesh sieve), and the current important improvement abroad in the crucible in the production technology, the type, size and quality of graphite flake has greater flexibility of the second is to replace the traditional clay graphite crucible the use of SiC graphite crucible, which is produced with the introduction of the constant pressure technology in the steel manufacturing industry. The use of constant pressure technology can also be applied to the small scale graphite, in the clay graphite crucible, and in the silicon carbide graphite crucible, the size of the scale of the composition of only the content of graphite carbon content reduced to.

Far infrared can enhance the function of the body, so that the human body full of vigor and vitality, and effectively prevent various diseases. Such as: activation of water molecules, improve oxygen content in the body, so that people with a flexible mind, spirit, enhance metabolism, adjust the nerve fluid body. Effective prevention of diabetes, hyperlipidemia, obesity, gout and other diseases caused by metabolic disorders; improve blood circulation, especially the microcirculation system. Can effectively prevent the disorder of microcirculation system caused by hypertension, cardiovascular disease, cancer, arthritis, cold limbs paralysis and other diseases; whitening, anti-inflammatory and detumescence function; improve immune function, regulate blood acid-base balance, dilute alcohol, strengthen liver function etc..

steel-making

Graphite and other impurities can be used as the material for the steel industry carburetant. The range of carbonaceous materials using carburizing is very wide, including artificial graphite, petroleum coke, metallurgical coke and natural graphite