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Question

Define the following terms:

1. Matrix

2. Flux

3. Slag

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Solution

Earthly or rocky impurities including silica (SiO2), mud, etc., which are associated with the ore is called as gangue or matrix.

Flux: A flux is a substance added to the charge in a furnace to remove the gangue particles.It is added to the ore to reduce the fusion temperature and to remove impurities.

E.g. Calcium oxide, silica, etc.

Slag: Slag is the fusible product formed when flux reacts with gangue during the extraction of metals.

SiO2 + CaCO3 CaSiO3 + CO2

Gangue Flux Slag


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