Cadmium Ingot

• 

Cadmium Ingot

Introduction

Cadmium and zinc are found in nature together.It is a good neutron-absorbing metal, made into rods that slow the rate of chain fission reactions in nuclear reactors, and Cadmium compoundsuseful in zn-cadmium batteries.Rare elements, symbol Cd.It's silver white.Melting point is 321 ℃.The ratio of material to cadmium in the crust is 1000000:0.1 ~ 1000000:0.5.Cadmium Ingotis extracted from zinc ore or sulphur-cadmium ore as a by-product and is mostly used to protect other metals from corrosion and rust,such as electroplated steel, iron products, copper, brass and other alloys.Another use is to make a bright yellow pigment called cadmium-yellow, which can be used in advanced paints and paints.

use

Used in the manufacture of alloys: as an alloy group, cadmium can be mixed into many alloys, such as hard copper alloys containing 0.5% ~ 1.0% cadmium, which have high tensile strength and wear resistance.Cadmium (98.65%) nickel (1.35%) alloys are used as bearing materials for aircraft engines.Cadmium is found in many low melting point alloys, with the famous wood fusible alloy containing 12.5% cadmium.

Cadmium rodshas a large thermal neutron capture cross section so alloys containing silver (80%) indium (15%) cadmium (5%)can be used as control rods for atomic reactors.

Cadmium compounds have beenwidely used in the manufacture of (yellow)pigments, plastic stabilizers, phosphors, insecticides, fungicides, and paints.

Used for electroplating, etc.Cadmium oxidation potential is high, so it can be used as a protective film of iron, steel, copper, widely used in electroplating anticorrosion, but because of its toxicity, this use has a reducing trend.

Rechargeable batteries:nickel-cadmium, silver-cadmium, lithium-cadmium batteries have the advantages of small size and large capacity

Cadmium is used in the manufacture of electrical alloy, such as most of the electrical contact of the electric switch USES the silver cadmium oxide material, has good conductivity, small arc, good welding performance advantages, such as resistance [4], widely used in household electric appliance switches, automotive relays, etc. [5], but as toxic cadmium and by the European Union "discarded electrical and electronic equipment directive (WEEE) and on the limit the use of certain hazardous substances in electrical and electronic equipment directive of two directive (RoHS) , the influence of the silver cadmium oxide gradually in the electric switch is environmental protection material, such as silver tin oxide, silver nickel material replaced.

History

In 1817,Stromell, Germany, separated the brown powder from the impure zinc oxide and heated it with charcoal to produce cadmium.

Cadmium Ingotwas professor of chemistry and medicine at the university of gottingen in Germany who first discovered cadmium.He is also a government-appointed inspector of pharmaceutical manufacturers.It was during his visit to the drugmaker that he noticed problems with zinc-containing drugs that led to his discovery of cadmium in 1817.Because the new metal was found in zinc,it was named Cadmium after Calamine, the zinc ore.The element symbol was Cd.

Cadmium was discovered much later than its Cousins, mercury and zinc.Cadmium compounds is more abundant in the earth's crust than mercury, but once it appeared, it attracted people's attention with its strong metallic luster, high specific gravity, special fluidity and ability to dissolve a variety of metals.The content of cadmium in the earth's crust is much less than that of zinc.The metal cadmium is more volatile than zinc, so it escapes earlier than zinc at high temperatures, escaping detection.This means that cadmium is unlikely to have been discovered before zinc.

Distribution of reserves

In nature, mainly sulfur cadmium ore exists;A small amount also exists in zinc ore, so it is a byproduct of zinc smelting.The main mineral of cadmiumis sulfur cadmium ore (CdS), which is stored in zinc ore, lead-zinc ore and copper lead-zinc ore.The world's reserves of cadmium are estimated at 9 million tons.

Asia is the world's largest producer of primary cadmium, mainly in China, South Korea and Japan.

In 2011, due to the impact of the earthquake in northeast Japan, several major cadmium production bases in Japan were temporarily closed.In 2012, the gradual resumption of related Japanese enterprises promoted the growth of global cadmium production, which wasestimated to be 23,000 tonsin 2012.

According to global mineral statistics released by the U.S. geological survey in January 2013,China produced7,000 tons of cadmiumin 2012, accounting for30.43%of the global total.North Korea produced4,100 tons of cadmiumin 2012, accounting for17.83 percentof the world's total.

Другие товары поставщика

	COBALT METAL PIECE	COBALT METAL PIECE The development of cobalt In the case of cobalt, the ancient greeks and Romans used its compound to make colored glass to produc...
	ZINC INGOT	ZINC INGOT Introduction Zinc ingotrefers to pure zinc, of course, there will be impurities, but as zinc ingot, at least 90% purity INGOT.Zinc ingot...
	CATHODE COPPER	CATHODE COPPER Quality requirements for cathode copper: copper concentrateis produced by electrolytic refining or electrolytic deposition. Use of e...
	NICKEL METAL PIECE	NICKEL METAL PIECE Introduction Nickel is a silver-white metal, in the air is easy to be oxidized by the air, the surface of the formation of some ...
	ALUMINUM ALLOY INGOT	ALUMINUM ALLOY INGOT Introduction Aluminum alloyis a kind of nonferrous metallic building materialwidely used in industry, and has been widely used...

Похожие товары

	HIGH QUALITY ALUMINIUM INGOT A7 99.7% AND A8 99.8%	Продавец: FIN ALAMAK	Products Name:Pure Aluminum A7 Ingot99.9%Chemical Composition:AlWeight:20/25kgAl (Min):99%-99.9%A...
	Good Quality Kitchen Furniture from China Stainless Steel Kitchen Cabinet	Продавец: Guangdong Baineng Home Furniture Co., Ltd	We believe in creating products that are not only stylish, but also durable and long lasting. Our...
	500ml Double Wall Stainless Steel Mini Milk Tea Bottle With Lid	Продавец: Golmate Enterprise Co., Ltd	Metallic color gives the thermos bottle coffeea polished look. With rope. With stainless st...
	Mg Игноты	Продавец: Henan Zonacen Metallurgy Materials Co., Ltd	Наша компания Компания Henan Zonacen Metallurgy Materials Co., Ltd будет уполномоченным зарубежны...
	сурьма	Продавец: HebeiDingguanMetalMaterial .Co.Ltd	Quick Details Weight:25kg Standard:DINGGUAN Chemical Composition:99.65% Sb Alloy Or Not:N...