Can anyone tell me the differences and uses of fine powder, coarse powder, lump ore and pellets?

I don’t know what mine you want to ask about, iron ore? This one is more commonly used, but the others are actually similar.

Difference: As the name suggests, the most intuitive thing that can be distinguished with the naked eye is size (particle size) and shape. Fine powder is generally a few microns or finer; fine powder is several hundred microns to tens of millimeters; lumps The particle size of the ore is larger, usually ranging from 10 to 40 mm; the pellets are round in shape, and the particle size is generally between coarse powder and lump ore (9-16 mm). Sometimes there are some large balls. Of course, due to The balls are artificial and the pellets will be softer than lump minerals.

It is easy to distinguish from the size and appearance.

Uses: All can be used to smelt metals (take iron as an example:)

The main raw material for blast furnace ironmaking is iron ore, which is divided into clinker and raw meal. Only clinker (lumps and pellets) can be put into the furnace directly, while raw materials (fine powder and coarse powder) must be processed before being put into the furnace.

The ores mined from the mines generally only have coarse powder and lump ore; the fine powder and pellets are processed manually, and the fine powder is continued to be crushed, screened, purified, etc. on the basis of the coarse powder. Processed; and pellets are obtained by mixing, pelletizing, drying, and roasting and solidifying of fine powder, coarse powder, and some binders.