Mechanical crushing

SUGAR MILL The term applied to a sugar cane factory, where sugar cane stalks are converted into raw sugar, or to the equipment that mechanically crushes and pulverizes the sugar cane stalks prior to extraction of the sugar-containing juices. 

The ferrous ion, c1+(aq), reacts with the permanganate ion, Mn04 (ag), in an acidic solution to produce the ferric ion, Fe3+(ag). A 6.893-gram sample of ore was mechanically crushed and then treated with concentrated hydrochloric acid, which oxidized all of the iron in the ore to the ferrous ion, Fe2+(aq). Next, the acid solution containing all of the ferrous ions was titrated with 0.100 M KMn04 solution. The end point was reached when 13.889 mL of the potassium permanganate solution was used. 

SZ sol was obtained by gently stirring a solution of 16.5 g of ethanol, 10 g of Zr (0C4H9)4 (80 wt.% in butanol), 1.5 g of distilled water, and 5 g of vitriol in a 500-ml flask until the system became a wet gel which was mechanically crushed with intensified stirring to afford a transparent sol. 

The ferrous ion, Ee %,), reacts with the permanganate ion, Mn04 in an acidic solution to produce the ferric ion, (a,). A 6.893 gram sample of ore was mechanically crushed and then treated with concentrated hydrochloric... 

Cataclastic metamorphism Localized metamorphism involving the mechanical crushing and grinding of rocks in faults during earthquakes (compare with contact and regional metamorphism). 

Two processes of sample division and reduction are covered (1) procedure A, in which manual riffles are used for division of the sample and mechanical crushing equipment for reduction of the sample, and (2) procedure B, in which mechanical sample dividers are used for division of the sample and mechanical crushing equipment for reduction of the sample. A third process that is, in reality, a combination of procedures A and B may be used at any stage. 

An important goal of materials science is the controlled and specific synthesis of well-defined nanoparticles. It is essential to obtain particles with uniform diameters and shapes and - for the purpose of particular apphcations - to func-tionahze the surface and embed the particles in a superstructure. To produce inorganic nanoparticles, bulk materials are mechanically crushed or the particles are synthesized from precursor compounds by controlhng the crystal growth kinetics. In order to stabihze the extremely large specific surface, appropriate ligands have to be added. 

Fleece can be made from polyethylene terephthalate (PET) bottles. The first step is to wash and then mechanically crush the bottles, shaping the plastic into small chips. The chips can then be heated and forced through tiny holes in a metal plate (called a spinneret), which forms fibers that harden as they cool to room temperature. These fibers are wound onto a spool as they are formed, and they can subsequently be stretched to improve their strength. Machines can then be used to texturize and cut the fibers to their desired length and be used to make fleece cloth for clothing, blankets, etc. 

The role of calcite and fluorite used in ball-milling process was proposed. When the minerals are mechanically crushed, the newborn solid surface is activated with the naked ionic species in situ generated. The naked carbonate and fluoride anions act as a strong base capable of deprotonating the active methylene compounds, with the consequent formation of a carbanion stabilized via the coordination with calcium cation, which combines with a carbonyl compound, eventually leading to the Knoevenagel product. 

All foams to be tested in each catalyst set were mechanically crushed 1 minute after demoulding using a Black Brothers Roller crusher set to a gap of 2.54 cm. Crushing was carried out three times on each part, rotating the foam 90 degrees after each pass through the roller. All parts produced for physical testing were allowed to condition for at least seven days in a constant temperature and humidity room (23 2 °C, 50 2% relative humidity). 

Kumakura M, Kojima T, Kaetsu I. (1982). Pretreatment of lignocellulosic wastes by combination of irradiation and mechanical crushing. Biomass, 2, 299-308. 

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