The Caron Process :: Total Materia Article

nickel ore reduction -

Reduction roasting and magnetic separation experiments illustrate that when the nickel laterite ore with the addition of 7% NCS as the additive and 2% soft coal as the reductant roasts for 50 min at 1200°C, the ferronickel product obtained from magnetic separation has the nickel grade of 9.78% with the nickel recovery of 92.06%, and the ...

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Nickel Ore Reduction by Hydrogen and Carbon Monoxide ...

In the first step a part of nickel is selectively reduced at minimum reduction potential and at a low temperature to avoid iron reduction and dissolution into the nickel. After separation of the nickel metal product the rest of the nickel is co-reduced with iron oxide to form ferronickel and to assure a …

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Nickel processing - Extraction and refining | Britannica

One process is the ammonia pressure leach, in which nickel is recovered from solution using hydrogen reduction, and the sulfur is recovered as ammonium sulfate for use as fertilizer. In another, the matte may be roasted to produce high-grade nickel oxides; these are subjected to a pressure leach, and the solution is electro- and carbonyl refined.

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crusher nickel ore reduction process

Nickel oxide NiO reduction and the subsequent Ni behaviour in hydrogen gas H2 are of practical importance in the elds of catalysis 1-5 ore during the reduction process with a Ni experimental ref- erence obtained by keeping the sample reduced at 2 °C/min for 100 min at 600-615 °C in 1 3...

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Optimal conditions for selective reduction process of ...

A low-grade nickel laterite ore from Indonesia was selected to investigate the effect of temperature and time of reduction upon the extraction of nickel through the selective reduction-magnetic separation process to produce the ferronickel. The nickel ore was mixed with5 wt.% of anthracite coal and 10 wt.% of sodium sulfate additive.

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Separation and recovery of iron and nickel from low-grade ...

11/1/2020 · The current pyrometallurgical methods have been exploited for processing nickel metal from low-grade laterite ore, such as in the metallic reduction roasting-magnetic separation process (Krupp-Renn Process) , , , , , , , rotary kiln-electric furnace (RKEF) process , , , , and sintering-blast furnace . The RKEF process is characterized by intensive energy consumption, which is conducted by a prereduction …

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Selective Reduction of Laterite Nickel Ore

Unlike sulphide nickel ore processing, laterite nickel ore processing requires higher processing energy through smelting. Therefore, a novel method to process laterite nickel ore using lower energy is needed. The novel method is done via direct reduction and magnetic separation.

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Nickel processing | Britannica

The nickel content of laterites varies widely: at Le Nickel in New Caledonia, for example, the ore delivered to the smelter in 1900 contained 9 percent nickel; currently it contains 1 to 3 percent. Mining. With nickel found in two radically different types of ore, it is not surprising that the mining methods differ.

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Nickel - Wikipedia

Nickel is obtained through extractive metallurgy: it is extracted from the ore by conventional roasting and reduction processes that yield a metal of greater than 75% purity. In many stainless steel applications, 75% pure nickel can be used without further purification, depending on the impurities.

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