Open up good opportunities for Bauxite ore merchant

FOR IMMEDIATE RELEASE
(Free-Press-Release.com) February 11, 2012 --

Bauxite is used in cement, chemicals, face makeup, soda cans, dishwashers, siding for houses, and other aluminum products. It is recycled so that it can be used over again. Bauxite is thought of as a rock because the minerals in it can be very different depending on where it is found. Actual minerals aren't that changeable. Mineral identification is based on the 'sameness' of the mineral each time a piece is found. For example, if you found a piece of halite, or salt, it would always look shiny or glassy, and always break evenly into cubes. Since the kinds of minerals that are in bauxite change a lot, its mineral identification changes from rock to rock, too. The ‘sameness' for mineral identification is not there so geologists think of it as a rock.

Bauxite ore processing plant

Bauxite is usually strip mined (surface mining) because it is almost always found near the surface of the terrain, with little or no overburden. Approximately 95 percent of the world's bauxite production is processed first into alumina, and then into aluminium by electrolysis. Bauxite ore are typically classified according to their intended commercial application: metallurgical, abrasive, cement, chemical, and refractory. Our crusher machine and grinding mill may plays an important role in the bauxite ore processng.Large 190 ton capacity haul trucks transport the bauxite ore to the central crusher. The bauxite crusher is used to break the ore down to a smaller size suitable for transport along the conveyor belt to the refineries. The common bauxite ore crusher may be Jaw crusher,Cone crusher,impact crusher and so on. The crushing plant is made up of a number of components that include vibrating screen, crusher machine and ball mill. Fine material drops through the vibrating screen while larger material passes over the screen to the bauxite ore crusher that breaks up the large rocks. The material that passes through the vibrating screen and bauxite crusher is collected and passed through the size that further reduces the size of the material before it is passed to the conveyor. The final size of the crushed bauxite ore is approximately suitable in diameter. Our Bauxite Ore Conveyor belts are used to transport the crushed ore to the destination. Bauxite Ore Crusher Bauxite Ore Crusher Usually, bauxite ore crusher is heated in a pressure vessel along with a sodium hydroxide solution at a temperature of 150 to 200 Celsius. At these temperatures, the aluminum is dissolved as an aluminates (the Bayer process). After separation of ferruginous residue (red mud) by filtering, pure gibbsite is precipitated when the liquid is cooled, and then seeded with fine-grained aluminum hydroxide. The gibbsite is usually converted into aluminium oxide, Al2O3, by heating. This mineral becomes molten at a temperature of about 1000 Celsius, when the mineral cryolite is added as a flux. Next, this molten substance can yield metallic aluminium by passing an electric current through it in the process of electrolysis, which is called the Hall--Héroult process after its American and French discoverers in 1886. Before Hall and Héroult discovered their process that uses cryolite and electricity, aluminium was separated from its ore--in small quantities--by heating the bauxite ore crusher with metallic sodium or potassium in a vacuum. However, those two metals were themselves produced by electrolysis, and the entire procedure was quite complicated and expensive. The Hall-Heroult process greatly simplified the process of refining aluminium and made it economical to produce aluminium from bauxite ore in very large quantities.

ore processing plant: http://www.hxjqchina.com/n28.html
Jaw crusher: http://www.hxjq-crusher.com/1.html
Cone crusher: http://www.hxjq-crusher.com/8.html
impact crusher: http://www.hxjq-crusher.com/2.html
vibrating screen: http://www.crusher-machine.com/8.html
ball mill: http://www.crusher-machine.com/21.html