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To increase the amount of a dissolved substance by evaporation.
(mining engineering)
To separate ore or metal from its containing rock or earth.
The clean product recovered in froth flotation or other methods of mineral separation.



(in mining), a product of mineral dressing that is more suitable for use or further processing than the initial raw material. In most cases, direct use of the extracted rock or its metallurgical or chemical processing is economically unfeasible and sometimes even technically impossible. A concentrate may have a high content of a valuable component (such as a metal), a small quantity of impurities (for example, iron and titanium in glass sand), or the required size (graded anthracite).

The quality of concentrates is regulated by government standards or by technical specifications that determine the size and the content of valuable components, undesirable impurities, and moisture. For example, concentrate must contain Pb > 70 percent, SiO2 < 2 percent, Cu < 1.5 percent, Zn < 2.5 percent, and Fe < 8 percent for lead hearth smelting and Pb > 30 percent, Cu < 4 percent, and Zn < 12 percent for shaft smelting.

A distinction is made among preconcentrate (coarse or crude concentrate), which is subjected to further dressing; bulk concentrate, which contains several valuable components; and final concentrate. In most cases, concentrate is a raw material for metallurgical, chemical, and other production processes.

References in periodicals archive ?
Apples Plus: apple cider blended with applesauce, apple juice concentrate, raisins, cinnamon
The improvements seen in insulin resistance, triglyceride levels, and abdominal fat attenuation in the fruit and vegetable juice concentrate capsule group open new avenues for future research and underscore the need to enhance intake of nutrition from fruits and vegetables in overweight boys.
Apple Juice Concentrate Import Volume of Some Countries and Regions during Production Season 2006-2007 to 2008-2009
To make liquid layers, pour thawed orange juice concentrate equally into each glass, then gently pour tea mixture into glasses.
Mandarin orange juice concentrate output fell from 40,711 tons in 1989 to 16,498 in 1993.
com/reports/c92622) has announced the addition of "China Apple Juice Concentrate Industry Report,2008" to their offering.
The trade sees considerable growth potential for banana juice concentrate.
can) frozen peach or apple juice concentrate, thawed
Instead of fruit, Stonyfield adds beet juice concentrate and natural flavors.
The new venture expects annual sales upwards of $45 million and annual production of apple juice concentrate of about 35,000 tonnes.
As reported two weeks' ago, UK fruit juice producers are facing escalating costs due to the 30% increase in new season Brazilian orange juice concentrate.
In a blender container, combine orange juice concentrate, 1 cup blueberries, honey, lemon juice, sugar, mustard and salt; blend until smooth.