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Flotation relies on the physical property of hydrophobicity, which refers to the tendency of certain minerals to repel water and cling to air bubbles. In an ore flotation process, the hydrophobic minerals attach to air bubbles and float to the surface, separating them from hydrophilic minerals that remain in the water.
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What is a fagergren flotation machine?
The induced air flotation machine was invented by William Fagergren in the 1930's in the Salt Lake Valley of Utah. Induced air means that the rotor for the froth flotation machine draws in atmospheric air, rather than having an air compressor or blower providing "forced air".
How is iron ore removed from the ground?
Most mineral ores exist as a compound - commonly an oxide or a sulphide, but others are known. If an oxide, then heating say, the iron ore in a reducing environment will remove the oxide. If a sulphide, then simple heating may suffice. It is just a matter of finding a chemical reaction that will remove the unwanted material.
What is the abundance of U-235 in most uranium ore?
The abundance of U-235 in most uranium ore is about 0.7.
What is the density of iron ore?
The density of iron ore is variable. Iron ore refers to a rocktype that contains iron minerals. The type and concentration of the iron minerals as well the type and concentration of non-iron minerals determines the density of the iron ore. Typical high grade iron ore is approximately 65% hematite and 35% other (commonly silicate). The density of hematite is approximately 5 g/cc and a general density for crustal rocks (silicates) is approximately 2.67 g/cc. Therefore iron ore that is 65% hematite and 35% silicate would have a density of approximately 4 g/cc.
What is the best variety of iron ore?
There isn't a single "best" variety of iron ore as the choice depends on factors like the specific requirements of the steel-making process and the location of the operation. Common types include hematite, magnetite, and taconite, each with its own characteristics and suitability for different applications. It's important to analyze the ore's chemistry and physical properties to determine the most suitable variety for a particular situation.
What Property is used in froth flotation?
properties used in froth flotation include, surface area, density of particles
Why does the ore need to be freshly ground for the flotation?
the ore needs to be freshly ground for the floatation to increase the surface area.
What are the steps of concentration of ore?
The steps of concentration of ore include crushing and grinding the ore to reduce its size, separating the desired mineral from the gangue using physical or chemical methods (such as gravity separation or froth flotation), and further refining the concentrate to remove impurities. The final step involves smelting or refining the concentrated ore to extract the desired metal.
How do you separate gold from ore?
Gold can be separated from ore through various methods such as gravity separation, flotation, and cyanidation. Gravity separation uses the difference in density to separate gold particles from the ore. Flotation involves adding chemicals to create a froth that selectively separates gold particles. Cyanidation involves using cyanide to dissolve gold from the ore.
How do you separate the components of gold ore?
It is initially done manually. In that you pick out the gold from the other rocks. After that there are various acids and chemicals that dissolve the gold and separate it from the other material
What do you mean by enritchment of metals in metallurgy?
Enrichment of metals in metallurgy refers to the process of increasing the concentration of a particular metal in an ore to make it economically viable for extraction. This can involve physical separation techniques such as froth flotation or magnetic separation to concentrate the desired metal in the ore for further processing.
What is used in a flotation cell to separate a metal compound and its ore?
In a flotation cell, chemicals called collectors are used to selectively attach to the metal compound particles in the ore. These collectors enable the metal compound particles to become hydrophobic, allowing them to attach to air bubbles and float to the surface for collection while the gangue particles remain in the water.
What is the process of extracting a useful substance from an ore?
The process of extracting a useful substance from an ore typically involves crushing the ore to release the desired mineral, then separating the mineral from the gangue (unwanted material) using physical or chemical methods such as gravity separation, flotation, or leaching. Finally, the extracted mineral is further refined to obtain the desired substance in its pure form.
What is always a property of an ore?
A property of an ore is that it contains a valuable or useful material that can be mined and extracted profitably.
How do you extract gold from copper ore?
Gold can be extracted from copper ore through a process called cyanidation, where a cyanide solution is used to dissolve the gold from the ore. The resulting solution is then processed to recover the gold through a series of chemical and physical processes.
What is beneficiating?
brifely explain the iron ore benification process
What is concentrating an ore?
Concentrating an ore involves separating the valuable minerals from the waste materials in order to increase the concentration of the desired element or metal. This process typically involves crushing and grinding the ore, followed by physical and/or chemical methods such as gravity separation, froth flotation, or magnetic separation to achieve a higher grade of the desired mineral.
