What is flux? Md. Saifur Rahman Flux is added to the ores to remove mineral impurities. At high-temperature metallic oxides of ores reduce and be free as metal and flux join with impurities and form metal slag. You may likeDo I need car insurance?What is car insurance?How could I get cheaper car insurance?What is auto insurance?Why Adulterant food is the barrier to sound health?What are the producers?What are food preservatives?What is food chain?What is tertiary consumer?