Micro powder grinding mill, as we all know that it’s one of common use micro minerals powder grinding machines, can be used in more than 150 kinds of minerals powder grinding. However, not all kinds of minerals can be grind by our micro powder grinding mill, the HGM micro powder grinding mill can grind minerals into 300-2500 mesh micro powder, but if you want to process hardness more than Mohs’ 6, that will cause a much worn of micro powder grinding mill.

Mohs’ hardness is used for measure the minerals’ hardness, it was divided into 10 grades, take talc as an example, it’s hardness is Mohs’ 1, and the hardest material on the world is diamond, it’s Mohs’ 10; and that interesting, our skin hardness is Mohs’ 2, it’s more harder than talc is. So our micro powder grinding mill can be used in Mohs’ hardness less than 6 minerals, there are about 150 kinds of minerals on the earth, such as: talc, dolomite, limestone, calcium carbonate, carbon black, graphite, calcite and so on. However, there are also some other minerals Mohs’ more than 6, but can be sued in our micro powder grinding mill to process powder, but it will cause much worn, so we don’t recommend you to process these materials by our HGM micro powder grinding mill.

The common minerals which are not suitable for our micro powder grinding mill as following:

Quartz: the quartz Mohs’ hardness is 7, it was mainly used in glass making after be grind into quartz powder, there are also many customers choose our HGM micro powder grinding mill to process quartz powder; although, our grinding mill can process quartz powder, the quartz powder fineness made by micro powder grinding mill cannot reach more than 1500 mesh, if you want to process more than 1500 mesh quartz powder by micro powder grinding mill, it will cause huge consume of grinding rollers and grinding rings, it’s not economical.

Slag: also be called GGBS sometimes, it’s also one of hard to process minerals, the slag is mainly cause by waste of metallurgical industry, so there are many different kinds of waste metals left in the slag or GGBS. As we all know, our micro powder grinding mill is mainly used in minerals powder grinding, but the slag and GGBS are kinds of mixtures of metallic and nonmetallic, so use our HGM micro powder grinding mill cannot save more cost for your business.

HGM micro powder grinding mill is good for Mohs’ less than 6 materials powder grinding; however, if you want to process minerals which Mohs’ are more than 6, or even more higher, what kind of machines you can use? Don’t worry, Shanghai Clirik is a processional manufacturer of powder grinding mills, that’s true, use HGM micro powder grinding mill cannot be helpful when you want to process hard minerals, but you can choose another ultra fine powder grinding machine, it’s our new technology CLUV ultra fine vertical roller mill.

CLUM ultra fine vertical roller mill can be used in Mohs’ hardness more than 6 materials powder grinding, such as: mica, cement, feldspar, quartz, slag and so on. The powder fineness can be processed between the range of 300-1500 mesh. So if you want to process hard minerals, maybe the CLUM ultra fine vertical roller mill will be your useful helper.