Carbonyl metallurgical processes is an important branch of metallurgy gasification. In recent years, nickel and cobalt production enterprises of China grasp its core technology through the technological innovation and break 100 years‘s foreign carbonylation metallurgy technology monopoly.
This technology increases 10% of the recovery rate in the platinum group metals associating with nickel and makes a whole improvement of China's platinum metals industry. With the nickel carbonyl production line built, China will end long-term dependence of carbonyl nickel powder imports.
The principle of carbonyl metallurgy process is the use of transition metal and carbon monoxide g reaction of volatile carbonyl compounds of metals separation and extraction method, ordinary nickel-metal hydride battery nickel carbonyl, the main raw material powder is obtained using this technique. This technology can produce carbonyl nickel powder, nickel carbonyl balls, thousands of unique properties of high-quality products are widely used in military industry, metallurgy, chemicals, electronics, energy, aerospace, telecommunications, automotive and other specialty industries. Over the years, the technology has been mastered and a few countries have implemented technology blockade. The project, launched in 2000 R & D in 2003, built China's first complete 500 tons / year production line and open up the process.
Nickel carbonyl (Ni (CO) 4) and carbonyl iron (F e (CO) 5) complex is a volatile liquid, they are using metal Ni and Fe, at a certain temperature, pressure, and synthesis reaction of CO gas. Carbonyl nickel (or iron) is very unstable at low temperature can easily dissociate into metal Ni (or Fe) and CO, by controlling the carbonyl compounds of pyrolysis temperature, time, etc., can be mass prepared from the nano to the micron level , even to the centimeter level, including zero-dimensional (nano-, micron particle material), one-dimensional (needle-like and filamentous material), two-dimensional (thin-film materials) and three-dimensional (pills, coated, gradient and hollow materials) materials the different shapes, different performance of the nickel (iron) products. With the current rapid progress of materials science and technology development to these shapes, strange performance nickel carbonyl (iron) products as raw materials, high performance can be developed in many high-tech products, they are in the electronics, chemicals, energy and defense areas copper powder(FCu) have a wide application prospect and great market demand.
Nickel carbonyl technology was invented by the British scientist LudwigMon and C • Wrangell in 1898 and achieved industrial production in 1902. The process has a short process, low production costs, no pollution, since the invention of the technology with countries to implement their technology has been blocked by a hundred years to improve and perfect, the world's only Canada and Russia have two industrial production lines.
In China in the 1950s late for carbonyl production of nickel-technology research, the mid-1960s was the construction of small-scale production plant for military and nuclear industry services, but because of backward technology, techniques and equipment level is low, serious environmental pollution, the cost of production high product quality and variety can not meet market demand. In May 2000, China began to nickel carbonyl industrial production technology development, application of oxo-method technique from copper-nickel alloys in the preparation of nickel products enriched precious metal process, and in 2003 built China's first complete 500 tons / year production line, has production of qualified carbonyl nickel powder, nickel carbonyl iron and nickel gel products, the world's third country to master the carbonylation of metallurgy, and engineering equipment.
Joint research by Chinese and innovation, and gradually solve the nickel carbonyl production technology, equipment, control, safety, environmental protection and a series of core technologies and engineering problems. The successful development of the project, marking China's full grasp of the carbonylation of the international advanced metallurgical technology, nickel product diversification, low-grade nickel-copper mine in the recovery of platinum group metals, will be China's plating, ultra- alloy steel, aerospace industry, nuclear industry and other bronze powder industries to provide inexpensive high-quality raw materials to end products of carbonyl dependence on imports, the kinds of passive situation.
Nickel carbonyl production technology using intermediate materials containing precious metals, raw materials to complete the preparation, synthesis, distillation purification, decomposition of powder, pills made of nickel, CO and other technology research and development cycle, all major equipment, all self-development and design. After three years of production practice, China has full ownership of the core technology of nickel metallurgy, the use of intermediate materials, production processes to improve metal recovery, nickel refining processes to enhance the overall level of technology for our energy, military, aerospace, electronics and other industries provide a demand for new functional materials important means.
With this technology carbonyl metallurgy, precious metals recovery will increase by 10%, while relying on the production platform to develop more products. In addition, have developed a non-metal of high pressure leaching of nickel matte production electrowinning of nickel, low-grade nickel-cobalt sulfide ore biological and metallurgical 13 international advanced level of core technology.
Carbonyl nickel powder and alloy powder is important raw material for many high-tech, new materials. In the field of powder metallurgy, catalysis, electronics and new materials, it has important applications. In 2006, world consumption of nickel carbonyl products has reached 14 million tons / years. It can be expected that as the rapid development of new technologies and new materials, the amount of nickel carbonyl is still increasing. China's refining nickel carbonyl technology develops rapidly in recent years. The products can not only supply the Chinese market but also export to foreign countries. It indicates that China carbonyl nickel-refining technology has entered the era of industrial production scale.Source:http://www.mhcmp.com
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