Is carnallite a complex compound?

Double salts as well as complexes are formed by the combination of two or more stable compounds in stoichiometric ratio. However, they differ in the fact that double salts such as carnallite, KCl. However, complex ions such as [Fe(CN)6]4– of K4Fe(CN)6, do not dissociate into .

How is potassium extracted from carnallite?

The process of diluting carnallite is the most widely used method, resulting in a solution that is heated to 105 °C in an evaporator and then cooled in a crystallizer to produce the potassium chloride salt. Several patents have been registered for this process.

How is carnallite ore made anhydrous?

By heating in a current of dry hydrogen chloride gas.

How is the crystal structure of carnallite produced?

Synthetic carnallite crystal specimens can be produced from 1.5 mole percent KCl and 98.5 mole percent MgCl 2 ·6H 2 O by slow crystallization at 25 °C. Its density is 1.602 g/cm 3. Carnallite can also be produced by grinding the combination of hydrated magnesium chloride and potassium chloride. Carnallite has corner- and face-sharing.

Why is carnallite so valuable as a commodity?

Magnesium is considered a contaminant when processing carnallite, but it can also be seen as an additional commodity. Magnesium is used in everything from personal health supplements to complex alloys for planes. That can make carnallite a great opportunity for miners that want to diversify their market and sell magnesium as a commodity.

What is the chemical formula for sylvite and carnallite?

Sylvite is a binary compound with the formula KCl. Sylvite precipitates first from mixed solutions of K +, Mg 2+ and Cl −, leaving a brine enriched in magnesium from which the mixed halide carnallite then precipitates. Carnallite’s chemical formula is K Mg Cl 3 ·6 ( H 2 O ).

What is the interatomic distance between a carnallite?

Carnallite has corner- and face-sharing. There is a network of KCl 6 octahedra, with two-thirds of them sharing faces. Mg (H 2 O) 6 octahedra occupy the open spaces within the KCl octahedra. The interatomic distance between the Mg and the H 2 O ranges from 0