During the extraction of sodium aluminate fro | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) In the Bayer's process for the extraction of aluminum from bauxite,the ore is treated with a concentrated solution of $NaOH$ at $473-523 \ K$ and

Vedclass · Accepted Answer

$Fe, Ti$

Vedclass · Answer

(C) In the Bayer's process for the extraction of aluminum from bauxite,the ore is treated with a concentrated solution of $NaOH$ at $473-523 \ K$ and $35-36 \ bar$ pressure. $Al_2O_3 \cdot 2H_2O + 2NaOH + H_2O \rightarrow 2Na[Al(OH)_4]$. During this process,impurities like $Fe_2O_3$ (ferric oxide),$TiO_2$ (titanium dioxide),and $SiO_2$ (silica) remain insoluble and are removed as 'red mud'. Among the given options,$Fe$ and $Ti$ compounds ($Fe_2O_3$ and $TiO_2$) are the primary insoluble impurities that precipitate out.

During the extraction of sodium aluminate from bauxite,the compounds of ....... are insoluble and precipitate out.

Similar Questions

The ore that is concentrated by the froth floatation process is

How is leaching carried out in case of low grade copper ores?

Froth flotation method is used for the concentration of which type of ores?

What is the process of leaching also known as?

Vedclass Test Series

Exam Paper Generator

Online Exam Module