pebble mill

pebble mill

[′peb·əl ‚mil]
(mechanical engineering)
A solids size-reduction device with a cylindrical or conical shell rotating on a horizontal axis, and with a grinding medium such as balls of flint, steel, or porcelain.

Pebble mill

A tumbling mill that grinds or pulverizes materials without contaminating them with iron. Because the pebbles have lower specific gravity than steel balls, the capacity of a given size shell with pebbles is considerably lower than with steel balls. The lower capacity results in lower power consumption. The shell has a nonmetallic lining to further prevent iron contamination, as in pulverizing ceramics or pigments (see illustration). Selected hard pieces of the material being ground can be used as pebbles to further prevent contamination. See Tumbling mill

References in periodicals archive ?
A new private hospital and research institution is set to be built on the site of the former BBC studios at Pebble Mill.
The Bupa Care Home is being built on the site of the former BBC studios at Pebble Mill, Edgbaston, and will have 62 bedrooms.
Five years earlier it was the home of Pebble Mill Studios, though the Google cameras only visited the area after the studios were demolished.
Kay Alexander presenting Midlands Today Kay Alexander presenting Midlands Today Countryfile presenter John Craven Countryfile presenter John Craven AS the Mercury's sister newspapers, the Birmingham Post and Mail launch a campaign calling for more BBC investment in the Midlands, we take a look at some of the great programmes made at the famous old Pebble Mill studios in Edgbaston.
6 Who presented the tribute programme Goodbye Pebble Mill At One .
Or Pebble Mill At Five as his pensioner audience will call it.
WORK has begun on demolishing the landmark Pebble Mill studios in Birmingham to make way for a pounds 100 million science and technology park.
TV appearances include Children's ITV, Sooty with Matthew Corbett, Pebble Mill, The Quest, Talk of the Town, The Afternoon Show and The Pyjama Party with Claudia Winkleman.
Then the three pre-existing rod mill/ball mill grinding circuits will be replaced by two parallel lines of primary autogenous mills with secondary pebble mills, while one primary rod mill (two parallel rod mills), secondary ball/pebble mill line will be retained.
Circle Health started construction earlier this year on a new hospital on the former BBC Pebble Mill site, off Pershore Road, in Edgbaston.
The plans for new defences at Harborne Lane Reservoir and the former Pebble Mill site will protect homes in the Selly Park area of the city which were deluged during the June storms.
I would like to know what is happening to all these demolished building sites which make Birmingham look like a longterm building site - the old ATV studios site on Broad Street, the old Pebble Mill Studios site in Edgbaston, a big hole next to the TUC building on Broad Street.