primary crushing machinery

См. также в других словарях:

• Crusher — For other uses, see Crusher (disambiguation). A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more… …   Wikipedia

• Rock crusher — A rock crusher is a machine designed to take large rocks and reduce them to smaller rocks, gravel, or rock dust. Rock crushers produce aggregates and ready to process mining ores, as well as rock fill material for landscaping and erosion control …   Wikipedia

• Graniterock — Infobox Company company name = Granite Rock Company company company type = Private company slogan = Quality by Design foundation = 1900 location = Watsonville, California key people = Bruce Woolpert, President CEO num employees = 650 industry =… …   Wikipedia

• Underground mining (hard rock) — A three dimensional model of an underground mine with shaft access Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals[1] such as ore containing gold …   Wikipedia

• copper processing — Introduction  use of smelting or leaching, usually followed by electrolytic refining or recovery, to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of copper and of its… …   Universalium

• tin processing — Introduction       preparation of the ore for use in various products.       Tin (Sn) is a relatively soft and ductile metal with a silvery white colour. It has a density of 7.29 grams per cubic centimetre, a low melting point of 231.88° C… …   Universalium

• Mineral processing — Crushing, a form of comminution, one of the unit operations of mineral processing In the field of extractive metallurgy, mineral processing, also known as mineral dressing or ore dressing, is the process of separating commercially valuable… …   Wikipedia

• James Buchanan: The Impending Disruption of the Union — ▪ Primary Source       During the critical four months that intervened between Abraham Lincoln s election in November 1860 and his inauguration in March 1861, President James Buchanan, a Democrat, was faced with the problem of secession. The… …   Universalium

• William Lloyd Garrison: The Dangers of Slavery (1829) — ▪ Primary Source       Antislavery movements had existed in the United States since the Revolution. They had even received occasional support in the South, on moral grounds; but the invention of the cotton gin in 1793 made slavery a seeming… …   Universalium

• France — /frans, frahns/; Fr. /frddahonns/, n. 1. Anatole /ann nann tawl /, (Jacques Anatole Thibault), 1844 1924, French novelist and essayist: Nobel prize 1921. 2. a republic in W Europe. 58,470,421; 212,736 sq. mi. (550,985 sq. km). Cap.: Paris. 3.… …   Universalium

• Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… …   Universalium