Technical Description

Quartz sand initial fractions:

1. Closed cycle grinding at rate of 300 kg/h:

Graphic №1 presents a ready product coming out of the hose filter.

Graphic №2 – presents characteristics of the circulation load.

Graphic №3 – presents a ready product coming out of the cyclone.

2. To demonstrate possibilities of the open cycle PCM grinding (without classifier and cyclone as they limit the ability to get ultra fine product), we provide milled quartz sand distribution curves at production rate of 300 kg/h (Graphic №4), 500 kg/h (Graphic №5),750 kg/h (Graphic №6),1000 kg/h (Graphic №7) and 1500 kg/h (Graphic №8).

Original material is the same for all the tests.

Graphic №1

Graphic №2

Graphic №3

Graphic №4

Graphic №5

Graphic №6

Graphic №7

Graphic №8

Grinding of different materials by open cycle dry method with steel beads grinding media and 300-400 kg/h output:

1. Self-bonded silicon carbide (SiC) F80=3mm
P80=27mcm, P50=12mcm, P30=5,3mcm

2. Brazilite of Kovdor ore-dressing and processing enterprize (ZrO2) F80=200mcm
P80=8,32 mcm, P50=3,19mcm, P30=1,46mcm

3. Granite waste F80=100mcm
P80=22mcm, P50=10mcm, P30=4mcm

4.Marble( grinding was made with addition of surface-active agent) F80=3mm
P80=28mcm, P50=11mcm, P30=4,6mcm

5. Coal F80=4mm
P80=21mcm, P50=13mcm, P30=8mcm