Iron oxide surface coating technology

Abstract

The invention discloses an iron oxide surface coating technology, and belongs to the technical field of iron oxide surface coating. The iron oxide surface coating technology coats thin tin powder on the iron oxide surface and the aluminum powder surface at the same time, so that the time is shorter compared with a step of single coating of iron oxide in the prior art, and the operation time is saved; iron oxide coated with the thin tin powder and aluminum powder coated with the thin tin powder are mixed for coating; the coating quality is better by using a similar dissolving principle; under the mixed coating condition, even if iron oxide not coated with the thin tin powder on the surface can be smoothly bonded and coated by the aluminum powder bonded with the thin tin powder on the surface, so that all iron oxide surfaces are coated with aluminum oxide films, and the coating quality is greatly improved; and in addition, the whole coating process is performed in selected high-speed dispersing equipment with automatic screening, so that the later single screening operation is prevented, the large-particle-size aluminum powder can be preferably prevented from bonding on the small-particle-size iron oxide surfaces, and the coating quality and the surface smoothness of finished products are improved.

Description

technical field [0001] The invention relates to the technical field of iron oxide surface coating, and more specifically, relates to an iron oxide surface coating technology. Background technique [0002] Iron oxide (ferricoxide), chemical formula Fe2O3. Also known as burnt limonite, burnt ochre, iron red, iron red, red powder, etc. Appearance is reddish-brown powder, soluble in strong acid, medium-strong acid, its reddish-brown powder is a low-grade pigment, industrially called iron oxide red, iron oxide is the main component of rust. The main cause of rust is that iron metal reacts with moisture and oxygen in the environment in the presence of impurity carbon, and iron metal will rust. Used in paint, ink, rubber and other industries, it can be used as a catalyst, a polishing agent for glass, gemstones, and metals, and can be used as a raw material for ironmaking. [0003] Its preparation methods include wet method and dry method. The wet-process products have fine crys...

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Problems solved by technology

[0007] However, in the above-mentioned technical scheme, the time for coating the aluminum oxide film on the iron oxide surface is long, and the efficiency is low, and in the process of coating the iron oxide surface with thin tin powder, it is difficult to ensure that all the iron oxide surfaces are adhered to the thin tin powder. In the process of coating aluminum powder in the next step, some iron oxide surfaces that do not adhere to thin tin powder are difficult to adhere to aluminum powder and form an aluminum oxide film, and the coating quality is low. In addition, after the coating is completed, It also needs to be screened additionally, increasing the workload

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