What is nickel sulfide used in?
Nickel sulphide and laterite ore is used to make nickel metal, predominantly for the production of stainless steel as well as nickel sulphate, a key ingredient in the batteries that drive electric vehicles. More than two thirds of global nickel production is used to produce stainless steel.
What type of bond is nickel sulfide?
The chemical formula for Nickle (II) sulfide is NiS. We can figure out this formula by taking the chemical symbol for Nickle (Ni) and placing it next to the chemical symbol for sulfide (S). However, its gets a little more tricky. Because the bond is between a metal and a non metal, it is ionic.
Is nickel a sulfide ore?
Sulfide ores are crushed and ground in order to liberate nickel minerals from the waste materials by selective flotation. Nickel requires higher smelting temperatures (in the range of 1,350 °C [2,460 °F]) in order to produce an artificial nickel-iron sulfide known as matte, which contains 25 to 45 percent nickel.
Is nickel magnetic?
Magnetism. Nickel is one of only four metals that are ferromagnetic, meaning they are attracted to magnets and are magnetic themselves. The others are iron, cobalt and gadolinium.
Is nickel sulfide toxic?
Inhalation: May cause mild poisoning, shortness of breath, congestion of the lungs, irritation to the upper respiratory tract, mucous membranes and nasal cavities. May cause pulmonary asthma attacks. Ingestion: Large doses may cause intestinal disorders, convulsions and asphyxia. Ingestion: May cause nickel toxicity.
Is NiO ionic or covalent?
The bonding in NiS is found to be quite similar to that in NiO, having an ionic contribution arising from the donation of the Ni 4s electron to the S atom and a covalent component arising from bonds between the Ni 3d and the S 3p.
How do you dissolve nickel sulfide?
NiS can be readily reactively dissolved with hot conc. nitric acid or with aqua regia, what is accompanied by sulfur precipitation.
How do you extract nickel from its ore?
It is extracted from its ores trough a conventional roasting method which removes the moisture from the ore. Next the nickel oxide is removed by reduction furnace which also greatly reduces the chemical bound water. Resulting in a 75% pure form of nickel.
Why are nickel coins not magnetic?
Due to manufacturing methods, not all steel is magnetic; not all varieties of steel or nickel are magnetic. A common US five-cent piece is called a “nickel”, but it is only 25 percent nickel, with the balance being copper. Therefore, it is not magnetic.
What metals are magnetic list?
List of Magnetic Metals
- Iron. Iron is an extremely well-known ferromagnetic metal.
- Nickel. Nickel is another popular magnetic metal with ferromagnetic properties.
- Cobalt. Cobalt is an important ferromagnetic metal.
- Steel.
- Stainless Steel.
- Rare Earth Metals.
- Aluminium.
- Gold.
Is nickel sulfide flammable?
Appearance and Odor: Black powder, no odor. Unusual Fire and Explosion Hazards: When heated to decomposition, nickel sulfide may emit toxic fumes of oxides of sulfur. …
What is the magnetic behavior of nickel sulfides?
Compared to the magnetic behavior of NiS bulk measured, the magnetization of the as-prepared nickel sulfides is much larger than that of the bulk at room temperature [42]. Such enhanced magnetization is often observed in nanoscale materials due to the size effect [43].
Why is the magnetic susceptibility of nickel so high?
Magnetic susceptibility is very high for nickel due to the parallel alignment of magnetic dipoles. But things change after Curie’s temperature. Thermal agitation above curie temperature destroys the parallel alignment of the dipoles and they orient randomly once again.
Is nickel sulfide a nonstoichiometric?
Aside from being useful ores, nickel sulfides are the products of desulfurization reactions, and are sometimes used as catalysts. Nonstoichiometric forms of nickel sulfide are known, e.g., Ni 9 S 8 and Ni 3 S 2.
How many types of binary nickel sulfides are there?
Nickel sulfide exhibits complicated compositional, structural, and magnetic phase behavior. Depending on the synthetic process, a number of binary nickel sulfides such as Ni 3 S 2, Ni 3+x S 2, Ni 4 S 3+x, Ni 6 S 5, Ni 7 S 6, Ni 9 S 8, Ni 3 S 4, and NiS have been reported [5], [6], [7], [8], [9].