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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 ?
A 60[degrees] Brix apple juice concentrate prepared through a 100% RO concentration process is also available through this supplier.
Meanwhile, combine pineapple juice concentrate, remaining 3 cups water, sugar, vanilla and almond extract in a 2-quart container.
Real fruit juice concentrate is a pain in the butt," says Frookies' Rich Worth.
Get saucy: Canned or prepared tomato sauce, condensed tomato soup--(used on its own or blended with a little silken tofu or soy sour cream), condensed mushroom soup (for a "white" pizza), tomato paste combined with tomato puree, orange juice concentrate combined with maple syrup and peanut butter (for a dessert pizza).
But Enrico adds a touch of olive oil, while Pritikin uses apple juice concentrate, corn starch, and natural flavors.
For dressing, whisk orange juice concentrate and mayonnaise together until well blended.
Applesauce, banana, peanut (or almond) butter, raisins, apple juice concentrate, wheat germ
Professor Zhang Wanxin was formerly head of one of China's largest commercial enterprises in the petro-chemical industry, and he has been involved in consolidation of certain food sectors in China, including the roll-up, technological enhancement and market globalization of the juice concentrate sector in China.
1 to 4 tablespoons fresh orange juice OR 4 tablespoons frozen, thawed orange juice concentrate
Work in oil and apple juice concentrate with your fingers or a fork until coarse crumbs form.
For dressing, whisk together orange juice concentrate and mayonnaise until well blended.
The nonsugar businesses include the production of frozen juice concentrate for the export market under a joint-venture (Patagonia) with Cargill, the production and sale of tomato paste in Peru (Icatom) and the production and sale of frozen vegetables and fruits in Chile (Iansafrut).