Pellet Production Process Knowledge Introduction

Pellet products have been used in steelmaking and direct reduced iron and so on. It is concentrate, flux (sometimes binder and fuel) mixture, roll in the pelletizer to a diameter 8 ~ 15mm (used in steelmaking will have bigger) green ball, then dried, calcined , consolidation molding, become excellent with good metallurgical properties of iron-containing materials, supply for iron and steel smelting needs. Pellet production’s main processes include raw material preparation, mixing, pelletizing, drying and roasting, cooling, finished and back to mine treatment processes. Pellets have good metallurgical properties: particle size uniformity, micro pores and more, reproduction is good, high strength, help strengthen the blast furnace. Pellets is another method of finely ground sand or other iron powder agglomeration.Stone production line raw material is mainly concentrate powder material and a number of additives, if use solid fuel firing, will have coal or coke. These raw materials into the plant to go through the preparation process, which includes: 1) Mix all ingredients; 2) The additive ground to a sufficient fineness; 3) Make the concentrate powder (or bonanza powder) ground to -200 mesh size greater than 70%, the upper limit of not more than 0.2mm; 4) The solid fuel crushed to less than 0.5mm; 5) Concentrate too much water need to be dried.   6) Through the sieve size too large will need re-crushing, grinding process.At present, several pellet roasting method: furnace roasting pellets, belt roaster roasting pellets, grate a rotary kiln fired pellet. Furnace roasting method using the earliest, but due to the inherent shortcomings of this approach and developed slowly. Currently used in most roasting machine belt law, more than 60% pellets with belt roaster roasting method. Grate a rotary kiln appeared later, but because it has a series of advantages, so the rapid development in the future is likely to become a major pellets roasting method.spiral classifier price:...