Graphite products have many excellent properties
Graphite products have many excellent properties, so they are widely used in metallurgy, machinery, electric power, chemical industry, textile, military industry, and other industrial sectors. Graphite products have good thermal conductivity, fast heat transfer, uniform heating, and fuel saving. , Baking pans and pans made of graphite heat up quickly, the baked food is heated evenly, cooked from the inside out, and the heating time is short. Not only the taste is pure, but also the original nutritional content of the food can be locked.
Graphite products have anti-oxidation and reduction effects. Graphite mattresses can generate negative oxygen ions after heating, activate surrounding objects, maintain human health, effectively detoxify, and make the skin full of luster and elasticity. Graphite is widely used in the electrical industry as the positive electrode of capacitors, brushes, carbon rods, carbon tube rectifiers, graphite gaskets, telephone parts, coatings for television picture tubes, etc.
With the continuous development of science and technology, high-purity products are used in high-purity metal smelting, the electronics industry, the nuclear industry, and mold manufacturing. Graphite products have good adsorption properties. The pore structure of carbon makes carbon have good adsorption properties. Used as an absorbent material for absorbing moisture, odors, and toxic substances. Graphite products can release far-infrared rays after heating, which makes graphite refractory materials closely connected with the steelmaking industry.
Graphite products have good thermal conductivity, fast heat transfer, uniform heating, and fuel saving. Baking pans and pans made of graphite heat up quickly, and cooked food is heated evenly. Supplied in graphite rods, cooked from the inside out for short heating times. Not only the taste is pure, but also the original nutritional content of the food can be locked. We did experiments. When grilling meat with a graphite grill, it only takes 20-30 seconds for the induction cooker to preheat when it is turned on. Even if graphite products have been used for a long time, there is almost no wear and tear, as long as they are wiped clean, they are still as new. Because graphite has many excellent properties, it is widely used in metallurgy, machinery, electric power, chemical industry, textile, medical, and other industrial sectors. The main use of graphite is to produce refractory materials, including refractory bricks, crucibles, continuous casting powder, casting cores, molds, cleaning agents, and refractory materials. Graphite is a metamorphic carbonaceous substance of organic origin, most commonly found in marble, schist, or gneiss. Coal seams can partially form graphite through thermal metamorphism, and a small amount of graphite is the main mineral of igneous rocks.
Industrially, graphite ore is divided into two categories: crystalline (flaky) graphite ore and stable crystalline (soil) graphite ore. Crystalline graphite ore can be divided into two types: scaly and dense. The flake crystal form is the main graphite ore in my country, followed by the aphanitic crystal form. Dense crystalline graphite is only found in individual deposits such as Tokebula in Xinjiang and has little industrial value.
Graphite products as conductive materials
Graphite is widely used in the electrical industry as electrodes, brushes, carbon rods, carbon tubes, positive electrodes of silver rectifiers, graphite gaskets, telephone parts, coatings for TV picture tubes, etc. Among them, graphite electric furnaces are the most widely used. When smelting various alloy steels and ferroalloys, graphite electric furnaces are used. At this time, a strong current is passed through the electric furnace into the melting zone of the electric furnace. An arc is generated to convert electrical energy into heat energy, and the temperature rises to about 100 degrees, to achieve the purpose of melting or reaction. In addition, when electrolyzing metal magnesium, aluminum, and sodium, the anode of the electrolytic cell is also electrolyzed by graphite. The resistance furnace for producing corundum also uses graphite electrodes as the conductive material of the furnace head. Graphite used in the electrical industry has high requirements on particle size and grade. For example, alkaline storage batteries and some special electric carbon products require that the particle size of graphite should be controlled within the mesh number range, above grade, and the minimum impurities (mainly metallic iron) should be below. The particle size requirements of graphite used in TV picture tubes are as follows. As a safety and lubricating material, graphite is often used as a lubricant in the machinery industry. Lubricating oil often cannot be used under high-speed, high-temperature, and high-pressure conditions, while graphite* materials can work without lubricating oil at -temperature and extremely high sliding speed (/). Many types of equipment conveying corrosive media widely use graphite materials to manufacture piston rings, sealing rings, and bearings. They operate without adding lubricant. Graphite milk is also a good lubricant for many metal processing (wire drawing, tube drawing).
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