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(also disk refiner), in the pulp and paper industry, a device designed for continuous operation in grinding fibrous materials, principally cellulose. The fibrous mass is in the form of an aqueous suspension and enters the refiner intake between grinding disks. Grinding elements (blades) are located on the working surfaces of the disks. In refiners designed with two disks, only one disk may rotate or both may rotate in opposite directions; in refiners with three disks, only the center one rotates. The grinding elements are constructed of pig iron, steel, bronze, or ceramic or abrasive materials. The amount of fibrous matter in suspension varies from 2 to 30 percent by weight, depending on the type of refiner.

Refiners are produced with outputs up to 550 tons per 24 hours; their electric motors have power ratings up to 8 megawatts. Refiners are also used for preparing wood pulp from chips (seeDEFIBRATOR).


Ivanov, S. N. Tekhnologiia bumagi, 2nd ed. Moscow, 1970.
References in periodicals archive ?
Reduction of over 40% in no-load power consumption compared to similar-sized conventional refiners.
Straits Financial is excited about the potential of the independent Chinese refining sector and we are looking forward to enabling other refiners to access the international energy markets.
Seoul/Singapore: A 25 per cent slide in crude prices since June should mean a windfall for Asian refiners, but instead they are facing a major drag on profits.
Separately, the Economic Coordination Committee has accepted the petroleum ministry's demand to extend the deadline for refiners to start producing Euro 2-compliant diesel to December 31, 2015, from June 2014.
Most oil majors and European refiners stopped trading with Libya during the revolution due to concerns about sanctions.
Essentially there are three critical factors that the refiner controls, which apply to virtually all precious metal bearing materials.
For example, Refiner A sold his product to a retailer who operated stations at the intersections of 2nd Street and 2nd Avenue and the northwest corner of 4th Street and 4th Avenue.
By consolidating their buying, Sinopec's plan further restricts the independent refiners that have already been required to sell their refined fuel inside China after the government scrapped their export licenses.
TEHRAN (FNA)- South Korea's reliance on Middle Eastern crudes fell in 2015 because refiners turned to Russian and Mexican cargoes that were plentiful, as an anticipated rise in purchases from Iran may halt the downslide this year, according to an analytic report.
Iran wants China's state-run Sinopec, Asia's largest refiner, and state oil trader Zhuhai Zhenrong Corp, to pay more, and faster, in 2012 than in 2011, sources familiar with the talks told Reuters.
NEW DELHI: Indian Oil Corporation, the nation's biggest refiner, posted a more than 18-fold increase in second- quarter profit, beating analysts' estimates, after the government compensated it for selling fuels below cost.
A second north Asian refiner outside of Japan also said its supplies would be cut by about 7pc, deeper than the 5pc curb that Saudi had given to nearly all its Asian buyers for December after Opec's 1.