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Nickel pig iron (NPI) is a low grade ferronickel invented in China as a cheaper alternative to pure nickel for the production of stainless steel [citation needed]. The production process of nickel pig iron utilizes lateritic nickel ores instead of pure nickel sold on the world market. The alternative was developed as a response to the high ...
Although marginal, the Krupp-Renn process remains a modern, high-capacity process for the production of nickel pig iron. In this context, it remains a systematically studied alternative to the RKEF process and the "sinter plant-blast furnace" combination. [26] Nihon Yakin Kogyo 's Ōeyama (Japan) plant in 2012. This is the last plant to employ ...
The firm pioneered the use of cheaper nickel pig iron in place of metallic nickel in its stainless steel production, and implemented the use of the rotary kiln furnace for continuous production. [4] Under Xiang, Tsingshan began to invest in nickel mines in Indonesia during the 2000s, when reserves were still unproven.
Companies are investing in smelters producing nickel pig iron, used in stainless steel, according to a report from Oxford Economics. South Korea–based POSCO Holdings, Chinese firm Ningbo Richin ...
China was excluded from statistics because its industry produced large tonnages of nickel pig iron in addition to a spectrum of conventional ferronickel grades, for an estimated combined output of 590,000 t gross weight. The nickel content of individual Chinese products varied from about 1.6% to as much as 80%, depending upon customer end use. [2]
This ore is so rich in limonite (generally grading 47% to 59% iron, 0.8 to 1.5% nickel and trace cobalt) that it is essentially similar to low-grade iron ore. As such, certain steel smelters in China have developed a process for blending nickel limonite ore with conventional iron ore to produce stainless steel feed products like nickel pig iron.
Pig iron, also known as crude iron, is an intermediate good used by the iron industry in the production of steel. It is developed by smelting iron ore in a blast furnace . Pig iron has a high carbon content, typically 3.8–4.7%, [ 1 ] along with silica and other dross , which makes it brittle and not useful directly as a material except for ...
[1] [2] These were constructed in the fields and backyards of communes to further the Great Leap Forward's aims of making China the top steel producer in the world. However, most furnaces were only capable of producing pig iron. The productivity of backyard furnaces was highly variable across China.