a crucible is a ceramic or metal container in which metals or other substances may be melted or subjected to very high temperatures. while crucibles historically were usually made from clay, they can be made from any material that withstands temperatures high enough to melt or otherwise alter its contents.
leaching is a process widely used in extractive metallurgy where ore is treated with chemicals to convert the valuable metals within into soluble salts while impurity remain insoluble.these can then be washed out and processed to give the pure metal; the material left over is commonly referred to as tailings.compared to pyrometallurgy leaching is easier to perform, requires less energy and is .
jump to navigation jump to search. ore extraction process. hydrometallurgy is a method for obtaining metals from their ores. it is a technique within the field of extractive metallurgy involving the use of aqueous chemistry for the recovery of metals from ores, concentrates, and recycled or residual materials.
pyrometallurgy is a branch of extractive metallurgy. it consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals. pyrometallurgical treatment may produce products able to be sold such as pure metals, or intermediate compounds or alloys, suitable as feed for further processing. examples of elements extracted by pyrometallurgical processes include the oxides of l
roasting is a process of heating of sulphide ore to a high temperature in presence of air. it is a step of the processing of certain ores. more specifically, roasting is a metallurgical process involving gas–solid reactions at elevated temperatures with the goal of purifying the metal component. often before roasting, the ore has already been partially purified, e.g. by froth flotation. the concentrate is mixed with other materials to facilitate the process. the technology is useful but is .
leaching metallurgy leaching is a process widely used in extractive metallurgy where ore is treated with chemicals to convert the valuable metals within into soluble salts. these can then be washed out and processed to give the pure metal; the material left over is commonly referred to as tailings.
the following processes are applied to metals and alloys, in order to change their shape, to alter their structure or composition, or some combination of these. . subcategories. this category has the following 7 subcategories, out of 7 total.