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Jan 17, 2019 The first step in making cement is to extract limestone and other materials from a quarry by blasting. The materials are reduced in size and then transported to a plant for processing. Then, other materials like sand, clay, shale, iron ore, gypsum, and minerals are ground with the limestone to produce raw meal which is uniform in size and ...
This process produces a material that softens at a higher temperature than paving asphalts. It may be air blown at the refinery, at an asphalt processing plant, or at a roofing material plant. The asphalt is heated to 500 F 260 C. Then air is bubbled through it for one to 4.5 hours.
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Processing Ability 0.216 m min. Processed Materials Non-ferrous metal minerals such as copper, lead, zinc, molybdenum, cobalt, tungsten, antimony etc. Applications The machine can be used to separate nonferrous metal, ferrous metal, noble metal, nonmetallic mine, chemical material