Rare Earth Alloy Wear-Resistant Pulverized Coal Mixer

The rare earth alloy wear-resistant pulverized coal mixer is made of rare earth wear-resistant alloy steel contains various alloy elements such as Cr, Ni, Mo, W, V, Cu, etc.
Rare earth alloy wear-resistant pulverized coal mixer is one of the equipment arranged on the pulverized coal wear-resistant pipeline of coal-fired boilers, and is used in the coal conveying system of intermediate storage coal-fired boilers. It is an important equipment in the blast furnace coal injection system to transport the pulverized coal in the injection tank to the blast furnace, and is used for uniform mixing of the pulverized coal and the compressed air.

The structure of the rare earth alloy wear-resistant pulverized coal mixer determines whether the pulverized coal can be mixed evenly with the compressed air, the concentration of the pulverized coal conveyed, and the use efficiency of the mixed pulverized coal. The uneven mixing of pulverized coal will affect the operation of the boiler, and even in severe cases, coal breakage will occur, resulting in unstable boiler operating parameters, drop in air pressure and temperature, and forced to reduce load in a short time.

Rare earth alloy wear – resistant tube is badly worn parts, such as pipe, elbow, reducer, and water intake place such as the model of integral casting, then mechanical processing method, especially the outer wear parts, especially in the elbow to the outer diameter change circle method is adopted to carry on the design, local thickening severe wear parts, but also according to various requirements, produce all kinds of irregular switch pipe fittings to meet the design requirements, straight tube is using centrifugal casting.Rare-earth wear-resistant alloy containing Cr, Ni, V, Mo, W, a variety of alloy element such as Cu, it not only has high hardness, but also has certain mechanical properties, at room temperature with good welding performance, and can be cut and the possibility of opening, also has certain corrosion resistance.

There are three main types of pulverized coal mixers:
(1) Double pallet pulverized coal mixer is DD27 series double pallet pulverized coal mixer
(2) Full negative pressure wear-resistant pulverized coal mixer;
(3) Ejector pulverized coal mixer.

The structural design of the double-plate pulverized coal mixer is not reasonable, resulting in the phenomenon of supporting powder, which affects the uniformity of coal feeding. The full negative pressure wear-resistant pulverized coal mixer is the main product of the equipment on the boiler pulverized coal pipeline. The principle of the full negative pressure wear-resistant pulverized coal mixer is to change the original double-layer support plate to a single support plate, and add an arc-shaped wear-resistant plate to the rear wall of the connection between the powder drop pipe and the mixer, so that the one-time flow through The wind has a drainage effect on the powder pipe, which completely eliminates the phenomenon of powder support.