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Delivery synthetic sodium cryolite to customer in the end of the year

Delivery synthetic sodium cryolite to customer in the end of the year

Dec 20,2023

Physicochemical parameters of ice crystals

Physicochemical parameters of ice crystals

Structural morphology Monoclinic system, a0=0.547nm, b0=0.562nm, c0=0.782nm, β= 9011 '; Z=2. [AlF6] with slightly altered crystal structure Composed of [NaF6] octahedron and [NaF12] cubic octahedron; Two types of octahedra are connected to form chains extending along the c-axis, and the chains are filled with other 2/3 of Na, with a coordination number of 12. The [AlF6] octahedron is located at the corner top and center of the crystal cell, while the [NaF6] octahedron is located at the center of the bottom surface and the middle of the vertical edge of the crystal cell. Four of the six [NaF12] are located on the crystal cell surface, while the other two are located in the crystal cell. At approximately 500 ℃ β- Cryolite is an equiaxed crystal system with Oh3-Fm3m; A0=0.795nm; Z=4. (NH4) 3AlF6 type structure, similar to potassium sodium cryolite structure. Due to the small radius of Na+distributed in the cubic octahedron, it cannot fill the space of the cubic octahedron. Therefore, under cooling conditions, the polyhedron tilts and transforms into a monoclinic crystal system. Orthorhombic columnar crystal, C2h-2/m (L2PC). Common simplex: parallel double-sided a {100}, b {010}, c {001}, and diagonal columns s {111}. Due to the well-developed crystal planes of {001} and {010}, the crystal shape looks similar to a cube. Double crystals often follow (110). Usually in a dense block shape, sometimes in sheet or granular form. Physical and chemical properties Colorless, white, sometimes appearing as light gray, light brown, light red, or brick red. Stripe white. Glass luster to grease luster. Transparent to semi transparent. Without cleavage, with {001} and {110} cracks. Embrittlement. The fracture surface is uneven. Hardness 2-3. Relative density 2.95-3.1. Under polarizer: colorless and transparent. Biaxial crystal (+), 2V=43?. Ng=1.3396, Nm=1.3389, Np=1.3385.

Sep 04,2023

Main uses of cryolite

Main uses of cryolite

Natural output is scarce and usually artificially produced. Mainly used as a flux for aluminum electrolysis; Also used as a wear-resistant additive for grinding products, it can effectively improve the wear resistance, cutting and cutting forces of grinding wheels, extend the service life and storage time of grinding wheels; Fluxes for ferroalloys and boiling steel, non-ferrous metal fluxes, casting deoxidizers, olefin polymerization catalysts, as well as emulsifiers for glass anti reflective coatings, enamel, glass whitening agents, flux for welding materials, fillers for the ceramic industry, pesticides and insecticides.

Sep 04,2023

What is cryolite

What is cryolite

Cryolite, with the chemical formula Na3AlF6, is a rare white fine crystalline mineral that has been discovered in the Ivitut large deposit on the west coast of Greenland. The main component of cryolite is sodium hexafluoroaluminate, which has stable chemical properties and is slightly soluble in water. In the molten state, cryolite can dissolve aluminum oxide, so it is used as a flux in the electrolytic aluminum industry. In addition, cryolite is widely used as a sunshade in the production of milky white glass and enamel products.

Sep 04,2023

What is cryolite? What are the types and types of cryolite?（Ⅰ）

What is cryolite? What are the types and types of cryolite?（Ⅰ）

Cryolite can be divided into high molecular weight cryolite and low molecular weight cryolite based on the ratio of sodium fluoride to aluminum fluoride molecules. Most domestic aluminum electrolysis plants in China use low molecular weight cryolite with a molecular ratio of 1.8-2.2 as the electrolyte for aluminum electrolysis.

Sep 04,2023

What is cryolite? What are the types and types of cryolite?（Ⅱ）

What is cryolite? What are the types and types of cryolite?（Ⅱ）

1. The molecular ratio can be adjusted arbitrarily between 1.0-2.8.2. With high main content and extremely low impurity content, it is suitable for normal production of aluminum electrolysis and can partially replace AlF3 for aluminum electrolysis production.

Sep 04,2023

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