The utility model provides a rotary kiln for producing ferronickel from Indonesia Sulawesi nickel laterite ore through RKEF technical processing. The rotary kiln comprises a kiln body and a bracket provided with riding wheels to support the kiln body, wherein a drive and transmission device enabling the kiln body to rotate on the riding wheels is …
Request PDF | Ferronickel Preparation from Nickeliferous Laterite by Rotary Kiln-Electric Furnace Process | Nickel is an important strategic metal, which is mainly used for stainless steel production.
Industrially, the pyrometallurgical treatment of laterites is mostly accomplished with a well-established method, namely, the rotary kiln–electric arc furnace (RKEF) process, which …
Based on a brief introduction of properties of metallic nickel, it summarizes the applications of nickel, demand of nickel, resources of nickel, and metallurgical …
Primary world nickel production in 2020 was 2430.7 kt Ni; 69% (1677.7 kt) of them came from oxidized nickel ores (laterites) and 31% from sulfides. Production-wise, 87.7% of the 1677.7 kt came from pyrometallurgical and 12.3% from hydrometallurgical processes. For a long time, Fe-Ni had a 20–40% Ni analysis, but in 2006 a new Fe-Ni quality came into …
is mainly used to make ferronickel, nickel matte, or nickel metal. Laterite nickel ore with a Ni content greater than 1.8% can be processed through pyrometallurgical methods. The production of ferronickel using the Rotary Kiln-Electric Furnace method involves a series of steps, including the transportation of raw materials, drying of
Coal is used as a common fuel for calcination of nickel laterites in rotary kiln. Due to the depletion of high-quality coal with low impurity content, high-sulfur coal has been used as fuel in nickel laterite rotary kilns. This investigation examines the behavior of sulfur present in the rotary kiln fuel in the calcination stage.
Nickel is widely used in industrial processes and plays a crucial role in many applications. However, most of the nickel resource mainly exists as nickel oxide in laterite nickel ore with complex composition, resulting in difficulty in upgrading the nickel content using physical separation methods. In this study, high-grade ferronickel concentrates …
Request PDF | On Jan 1, 2009, C. Walker and others published Nickel laterite rotary kiln-electric furnace plant of the future | Find, read and cite all the research you need on ResearchGate
The situation has become so dire, in fact, that some producers have even begun investigating ways to produce class 1 nickel from laterite ores, which historically have served only as an economically viable source of class 2 nickel, due to the highly complex nature of converting them to class 1. The Need for Nickel Laterite Dryers
(1) Economical aspect. Crude ferro-nickel can be produced at a low energy cost, using a rotary kiln after pretreatment of the raw materials. 2. (2) Availability of the product. The crude ferro-nickel product can be well utilized as the raw material in the AOD stainless steel making process.
Rotary Kiln - Electric Furnace (RKEF) process is the most commonly used pyrometallurgical technique for processing nickel laterite ores and is mainly suited for saprolite deposits.
Both the consumption and production of crude stainless steel in China rank first in the world. In 2011, the nickel production in China amounted to 446 kilotons, with the proportion of electrolytic nickel and nickel pig iron (NPI) registering 41.5% and 56.5%, respectively. NPI is a low-cost feedstock for stainless steel production when used as a …
In this study, low grade nickel laterite ore was processed by means of isothermal-temperature gradient method to produce ferronickel nugget. The ore and coal as reductant were ground to obtain the grain size of less than 0.25 mm and 0.425 mm, respectively. Both ground laterite ore and coal were mixed, agglomerated in the form of …
The primary pyrometallurgical route to produce ferronickel from laterite nickel ores is the Rotary Kiln-Electric Furnace (RKEF) process. In the RKEF process, minerals undergo calcination and ...
Rotary kiln-electric furnace (RK-EF) process is the main pyrometallurgical route for ferronickel production from nickel laterite ores. Coal is used as a common fuel for calcination of nickel ...
Semantic Scholar extracted view of "Coprocessing of Stainless-Steel Pickling Sludge with Laterite Ore via Rotary Kiln-Electric Furnace Route: Enhanced Desulfurization and Metal Recovery" by Guanghui Li et al. ... chromium, and nickel recovery from BOF dust, and for simultaneous recovery of zinc and iron from the electric arc … Expand. 52. PDF.
Industrially, the pyrometallurgical treatment of laterites is mostly accomplished with a well-established method, namely, the rotary kiln–electric arc furnace (RKEF) process, which …
Rotary kiln-electric furnace (RKEF) technology accounts for 95 pct of the lateritic nickel ore processing. Coal is commonly used as fuel and reducing agent in the rotary kiln to produce solid reduction product which is then melted in the electric furnace. The use of coal in the process leads to the emission of approximately 70 tons of CO2 for …
The primary pyrometallurgical route to produce ferronickel from laterite nickel ores is the Rotary Kiln-Electric Furnace (RKEF) process. In the RKEF process, …
Coal is used as a common fuel for calcination of nickel laterites in rotary kiln. Due to the depletion of high-quality coal with low impurity content, high-sulfur coal has been used as fuel in nickel laterite rotary kilns. ... Coal consumption in nickel laterite rotary kilns in these plants is reported to be in the range of 80 to 115 kg/ton [29].
An energy saving strategy with two energy saving measures has been proposed for reducing energy loss in the rotary kiln-electric furnace (RKEF) for the smelting of ferronickel alloy. One of the measures is to recover the waste heat of exhaust gas from the rotary kiln for preheating and dehydrating the wet laterite ores in the …
The low-grade nickel laterite ore used in this study was successfully upgraded through selective reduction by industrialized rotary kilns followed by magnetic separation.
upgrading of low-grade nickel laterite ore. In this paper, by collaborating with anenterprise, its aim is to validate and promote a practical and efficient pretreatment technology to upgrading of low-grade nickel laterite ore by reduction roasting in rotary kiln followed by magnetic sepa-ration. The effect of roasting temperature of rotary kiln ...
In 1950 laterite source nickel formed only a small fraction of the production (<10%). In 2003, nickel from laterite sourced accounted for 42 % or about 510 kt Ni. By 2012 the share of laterite source nickel is expected to rise to 51 %. The growth in nickel supply has followed economic cycles and other world events.
Furthermore, the route of rotary kiln-electric furnace (RKEF) was selected to this limonitic laterite; the results demonstrate that comprehensive recovery efficiency of Ni, Co, Fe is high with recovery rate of 98.72%, 98.38%, 54.89%, respectively. ... Laterite nickel ores are generally divided into limonitic, ...
With continuous consumption of high-grade sulfide resources, the use of nickel laterite has drawn increasingly attention [6,7,8]. Up to now, the pyrometallurgical method, namely the rotary kiln-electric furnace (RKEF) process, has been applied to produce ferronickel from nickel laterite ore [9, 10].
The rotary kiln-electric furnace (RKEF) process is the main method for producing ferronickel from nickel laterite ore . However, this process is energy intensive …
High production quality: nickel iron produced by laterite nickel ore Rotary kiln is of high quality, containing about 20% Ni, and can be directly used as raw material for stainless steel production. 4. Diversified uses: The nickel products produced have a wider range of uses and can also be used as a coolant for molten steel melting. ...
The construction of DRMS process on such a scale needs two rotary kiln lines with each production scale of 50 t/d for the reduction of nickel laterite. The two rotary kiln lines share the same systems including burden system, briquette system, screening system, mill control system and mineral separation system, and the capital cost …
