Iron oxide black
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Keyword：Relyiron oxide
Detailed introduction
Iron oxide black, also known as Iron black, is a black inorganic pigment with triiron tetroxide (FeL3OAnnex) as the main component. Its chemical formula can also be expressed as Fe₂ OL3FeO, which is Iron oxide (FeO₂) and ferrous oxide (FeO) adduct. The following is a detailed description of iron oxide black:
basic nature of 1.
Appearance: Black powder, the particles are cubic.
Refractive index: 2.42.
Magnetic: There is a strong magnetic.
Chemical stability: the role of sunlight and the atmosphere are very stable, resistant to all alkali, but soluble in acid.
Tinting power and hiding power: Tinting power is great, but not as good as carbon black; hiding power is very high.
2. production process
There are many methods for the synthesis of iron oxide black, and the main production processes include wet and dry methods:
Wet production: iron salt reacts with ammonia water to obtain Iron hydroxide precipitation, and then heating reduction or calcination to obtain Iron oxide black. The Iron oxide produced by this method has deep black color, high purity and uniform particle size, but the production cost is high.
Dry production: Iron, oxides and other raw materials, at high temperature reduction reaction, the generation of Iron oxide black. The dry production process is simple and the production cost is low, but the product quality is somewhat unstable.
Main purpose of 3.
Coating industry: Iron oxide black is mainly used for making primer and topcoat, with good coloring performance and hiding power.
Construction industry: As a rust inhibitor, it is used to protect the surface of building materials from corrosion.
Electronic communication industry: used in the manufacture of magnetic steel, can also be used as the cathode plate of alkaline dry batteries.
Machine manufacturing industry: It has application in steel flaw detection.
Metallurgical industry: it is an important mineral raw material for ironmaking.
Other areas: in watercolor, ink in the amount is very large, the main raw material of the magnetic toner dedicated to the copier is needle Iron oxide black. At the same time, because of its non-toxic, non-polluting and other characteristics, it can also be used in the production of advanced cosmetics, such as candy, chocolate products coating colorants.
4. safety and environmental protection
Although Iron oxide black itself is not a dangerous goods, does not have explosive, flammable, oxidizing, toxic, corrosive and other characteristics, but in the process of transportation, storage and use still need to take appropriate protective measures to ensure personnel safety and environmental safety. For example, personal protective equipment such as protective clothing, masks, gloves and goggles should be worn to avoid contact with skin and eyes; moisture-proof, sun-proof, fire-proof and other measures should be adopted during storage and transportation to avoid contact with food and drinking water; ventilation should be strengthened during use to avoid inhalation of dust and to prevent fire sources.
In summary, Iron oxide black, as an important inorganic pigment, has a wide range of applications in many fields. Its unique physical properties and chemical stability enable it to meet the needs of different fields and applications. At the same time, safety and environmental protection issues should also be paid attention to in the process of production and use.
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Tongling Rely Technology Co.,Ltd.
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