What is an acid flux in metallurgy?
Acidic fluxes are used to remove basic impurities from the metal ore. The most commonly used acidic flux is sand(silica).
Which of following is acidic flux?
Silica is used as acidic flux because it is almost non-reactive due to the very high bond enthalpy of Si−O bond. It resists the attack by halogens, dihydrogen and most of the acids and metals even at the elevated temperature.
What is flux name an acid flux?
Acidic flux : These flux are those which comes from substances like Lewis acid such H3PO4, HCl etc. They are used in welding or extractive impurities such as lime (CaO) or MgO.
Is MgO A acidic flux?
MgO is an acidic flux.
Is CaO A acidic flux?
Basic fluxes like lime (CaO), magnesium oxide (MgO) are used to remove acidic gangue such as SiO2.
What is flux in chemistry class 12?
Flux is the substance added during the extraction of metals. On heating it reacts with the earthly impurities(gangue) to form fusible (molten) mass known as slag. They may be acidic or basic in nature. Acidic flux are is used to remove the basic impurities. For example silica.
Which of the following is used as flux?
Some of the earliest known fluxes were sodium carbonate, potash, charcoal, coke, borax, lime, lead sulfide and certain minerals containing phosphorus. Iron ore was also used as a flux in the smelting of copper….MIL-F-14256 and QQ-S-571.
| R | (Rosin) |
|---|---|
| RA | (Rosin activated) |
| WS | (Water-soluble) |
What is flux give an example of acidic and basic flux?
– Acidic flux is the substance added to molten metals to bond with basic impurities that can be readily removed. – For example, silica is used to remove calcium oxide impurities from the ore. – Basic flux is the substance added to molten metals to bond with acidic impurities that can be readily removed.
Which type of flux is SiO2?
In the present research work SiO2 is considered as the base of flux. NiO, MnO and MgO were varied at three different levels. Degree of freedom is the base for proper selection of orthogonal array in experimental design.
Is CaO acidic flux?
Is CaCO3 a basic flux?
SiO2 is acidic flux whereas CaCO3, Lime and CaO are basic flux.