Gobal WebSites:

Grinding diatomaceous earth for fine powder

Date:2013-06-24 08:24:57    From:    Click:

Diatomaceous earth is a naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white to off-white powder. It has widely applications. One form of diatomaceous earth is used as a filter medium, in chemisty as a filtration aid, to filter very fine paticles that would otherwise pass through or clog filter paper. The oldest use of diatomite is as a very mild abrasive, it has been used both in toothpastes and in metal polishes, as well as in some facial scrubs.

Diatomaceous earth powder are processed by diatomaceous earth stone grinding machine, which is designed by our engineers and technicians on the basis of multiple innovation, test and experience over two decades, has absorbed many advantages of home and abroad mill minufacturing tecnnique. It has been proved by thousands of customers that our machine has outsanding feataures and stable quality. Our stone grinding machine can upgrade its production and the additonal values which is suitable for our customer to use. It is the ideal equipment for fine milling.

Stone grinding machine mainly consist of main unit, classifier, powder collector, dust cleaner, blower, muffler, sound-proof room, crusher, bucket elevator, storage hopper, and vibrating feeder.

After crushed by hammer crusher, the large materials become small ones and are sent to storage hopper by elevator, and then evenly sent to the upper distribution plate of the turnplate by vibrating feeder and sloping feeding pipe.

When the grinding mill is at work, all the grinding rollers are rolling in the ring, and the materials are driven to the edge of the turnplate by the centrifugal force and fall down into the grinding chambers where the materials are repeatedly pressed, crushed and grinded by the rollers.

The high-pressure air blower constantly inhales air within the grinding mill and, in turn,  the airflow with crushed materials are brought to the classifier whose high-speed impeller will screen the airflow: the unqualified particle size will fall and return to the mill for being reground while the qualified particle size mixed with air will go into the cyclone powder collector. Most of the qualified powders will fall and exit from the discharging valve at the bottom; a small proportion of the fine powders, with airflow, moves to the dust cleaner, and clings to the surface of the filter bags. At the same time, the fine powders clinging to the surface fall down by the sudden vibration of the filter bags, which is caused by the instantly ejected high-pressure gas controlled by the pulse valve. The materials from the above two lots are sent by the conveyor at the bottom to get finished powders packed. In addition, filtered clean air will be emitted from the air outlet of muffler in the end.