Scouring


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scouring

[′skau̇r·iŋ]
(engineering)
Physical or chemical attack on process equipment surfaces, as in a furnace or fluid catalytic cracker.
(geology)
An erosion process resulting from the action of the flow of air, ice, or water.
(materials)
(mechanical engineering)
Mechanical finishing or cleaning of a hard surface by using an abrasive and low pressure.
(textiles)
Removal of grease and dirt from wool.
The cleaning of fabric before the dyeing step.

Scouring

 

the heating of cotton and linen fabrics in solution of alkalies at atmospheric or increased pressure to remove impurities and to prepare the fabrics for bleaching, dyeing, or printing. The most effective method is dynamic scouring, which is performed at atmospheric pressure and about 90°C by continuous movement of the fabric through a solution containing sodium hydroxides, sodium bisulfite, and sodium silicate.

scouring

Using a wood float, in a circular motion, to smooth freshly applied mortar or plaster.
References in periodicals archive ?
The number of wool scouring operators in New Zealand has been reducing for some time in the face of a declining wool clip and increasing greasy wool exports to China.
0] is depth of uniform flow and ds is depth of local scouring at the bridge pier without slot) in the cylindrical piers.
Iceberg impacts cause major changes to underwater ecosystems, particularly in the shallows where frequent scouring means there are no sponges or other large sessile animals,' says Dr Smale.
Qaisrani (1993) and Tong (1992) found that spherical convexes made from Ultra High Molecular Weight--Poly Ethylene (UHMW-PE) reduced the adhesive forces and improved the scouring properties of bionic bulldozing plates and mouldboard ploughs.
In addition, the pressurized accelerated flow can create severe potential for scour because scouring the channel bed is one of the only ways for a river to dissipate energy and reach equilibrium when it is carrying a given discharge under pressurized flow.
Ammonia, the main ingredient in many window, tub, toilet and tile cleaners, is caustic and poisonous if ingested--and, if combined with chlorine, present in many scouring products, produces toxic chlorine gas
Cotton scouring process results in hydrophilic cotton material.
To dig up more of the six-legged arthropods and learn about the lifestyles of different types of ants, Fisher has spent years scouring the soil in Madagascar (see map, below).
Peissel, a French anthropologist who speaks Tibetan, is an intrepid explorer, scouring the inhospitable mountainous terrain of the Himalayan plateau on foot and on horseback to reach the fortresses, chapels, monasteries and temples he has meticulously recorded for this book.
Some researchers are scouring nature to find organisms with antibiotic properties that have been overlooked.
After scouring the text for background on earthquakes, tsunamis and population dynamics and sharing videos about tsunamis, Cape guided students through an interdisciplinary project.