What is the gangue in chemistry?

A gangue in chemistry can be defined as an unwanted material or impurities in the form of sand, rock or any other material that surrounds the mineral in an ore deposit. This substance is common when it comes to the aspect of mining.

What is called gangue?

In mining, gangue (/ɡæŋ/) is the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit.

What is meant by gangue Class 10?

Gangue: The impurities like sand, mud, rocky substances etc. that are present in an ore are called gangue. Concept: Extraction of Metals.

What is gangue and ore?

1) mineral -the naturally occuring compounds of elements are known as mineral. 2) ore- the mineral from which an element can be extracted easily and profitably is called an ore. 3) gangue- the impurities present in ore such as sand rock etc is known as gangue.

What are gangue particles?

The gangue particles are the unwanted materials or impurities like sulfide, oxides, silica sand etc which are mixed in minerals and which are removed during extraction of pure metals.

What is the example of gangue?

The definition of gangue is worthless rock or mineral in which valuable minerals are found. An example of gangue is the rock surrounding a deposit of gold.

What are the types of gangue?

7 Nonsulfide Gangue Minerals. The dominant gangue minerals in VMS ores are quartz, chlorite, muscovite, carbonates, and sulfates (mainly gypsum and barite). The same minerals form the dominant alteration in host rocks affected by the ore fluids (see below).

Is pyrite a gangue?

There are many other major to minor gangue minerals associated with iron ore deposits including many different silicates (including amphiboles and chlorites), carbonates (siderite and ankerite), sulfides (e.g., pyrite), and oxides (e.g., pyrolusite).

What is called ore?

Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit. Ore is extracted from the earth through mining and treated or refined, often via smelting, to extract the valuable metals or minerals.

What is roasting in chemistry?

Roasting Definition: Roasting is a process in metallurgy in which a sulfide ore is heated in air. The process may convert a metal sulfide to a metal oxide or to a free metal. Example: Roasting ZnS may yield ZnO; roasting HgS may yield free Hg metal.

What is roasting Class 12 in chemistry?

Roasting is the process of heating concentrated ore to a high temperature in the presence of air. The ore zinc blende is roasted in order to get zinc oxide.

What is Calculation and roasting?

Roasting. Calcination is a process in which ore is heated in the absence of air or air might be supplied in limited quantity. Roasting involves heating of ore lower than its melting point in the presence of air or oxygen. Calcination involves thermal decomposition of carbonate ores.

What is rusting short answer?

Rusting is defined as the chemical process in which there is a formation of red or orange coat on the surface of the metals. Rusting is a part of corrosion.

What is rusting Class 7 long answer?

During the rusting of iron, it combines with the oxygen in the presence of water (moisture) to form a new compound ‘iron oxide’. This iron oxide is a rust. It is a permanent change which cannot be reversed back. So, rusting of iron is a chemical change.

What is galvanization for Class 7th?

Definition. Galvanization is the process of applying a protective layer of zinc on a metal. It is a very common method of preventing the rusting of iron. This can be done by dipping the metal to be protected in hot, molten zinc or by the process of electroplating.

What is crystallization for 7th class?

The process of deriving large crystals of pure substances from their solutions is known as crystallisation. It is a physical change. Crystals of salt are obtained by the evaporation of sea water.

What is crystallization point 12th class?

crystallization The crystallization temperature of a brine is the temperature at which a solid phase begins to form, resulting in a mixture of solid particles and solution. These solids may be salt crystals or water crystals (ice). … It is the point at which the minimumcrystallization temperature can be realized.

What do you mean by mother liquor?

Definition of mother liquor

: a residual liquid resulting from crystallization and remaining after the substances that readily or regularly crystallize have been removed. — called also mother water.

What is Crystalization point?

crystallization point means the temperature below 32ø F at which ice crystals begin to form; Sample 1.

What is crystallization Class 11?

Hint: Crystallisation is a process of removing impurity from the mixture and finally getting the pure desired compound. It includes the formation of crystals of pure compounds. Complete step by step answer: The process of formation of solid crystals from a homogeneous solution is called crystallization.

What is crystallization separation?

Introduction. Crystallization from solution is a separation technique where a solid phase is separated from a mother liquor. In contrast to other separation processes, however, the dispersed phase consisting of numerous solid particles also forms the final product, that has to meet the required product specifications.

What is cold crystallization?

“Cold crystallization” is defined as an exothermic crystallization process taking place upon heating from a glassy, amorphous phase, which is often observed for polymeric materials below the melting temperature. (

What is the glass transition temperature?

Glass transition temperature is described as the temperature at which 30–50 carbon chains start to move. At the glass transition temperature, the amorphous regions experience transition from rigid state to more flexible state making the temperature at the border of the solid state to rubbery state.

Why does cold crystallization occur?

stress, orientations, imperfect crystal structure) caused by the cooling conditions during processing. Such conditions cause plastics to solidify in a supercooled melt, so the resulting structure has no equilibrium.

What is the crystallization temperature?

The temperature at which crystals will appear in a brine solution of a given density as it cools. In preparing oilfield brines, the crystallization temperature can be used to indicate the maximum saturation (density) achievable for a brine solution at a given temperature.

What is TM in polymer?

crystalline melting temperature (Tm) – temperature at which a crystalline polymer converts to a liquid, or crystalline domains of a semi-crystalline polymer melt (increased molecular motion)

What is melting point?

The melting point of a substance is the temperature at which the substance changes from a solid to a liquid. For a pure substance, melting occurs at a single temperature. Unless specifically stated otherwise, melting points reported in the literature have been measured under an applied pressure of 1 atm of air.