Rotary Kiln Production Of Ferronickel
Melting Behavior of Siliceous Nickel Ore in a Rotary Kiln to …
Ferronickel alloys as a nickel source for high alloy steels such as stainless steels are produced from garnierite ores by means of a rotary kiln. That is basically modification of Krupp–Renn process by which clinkers, that are mixtures of ferronickel alloy particles and partially melted slag, can be extracted.
Enhancing Rotary Kiln-Electric Furnace Process of Saprolitic …
How to reduce the energy consumption of the rotary kiln-electric furnace (RKEF) process has become an important issue for the stainless steel industry. The aim of this study is to reduce the energy consumption of ferronickel production from saprolite nickel laterite in the RKEF process. The effects of the slag binary basicity, FeO content, …
FERRONICKEL PREPARATION FROM NICKELIFEROUS …
Rotary kiln-electric furnace (RKEF) smelting is a successful process for disposing nickeliferous laterite ore to produce ferronickel, it has the advantages of raw material adaptability, good product quality and high production efficiency etc [6].
Novel Process of Ferronickel Nugget Production from Nickel …
Rotary kiln-electric furnace (RKEF) process is the main technology to deal with nickel laterite for the ferronickel alloy production in the world. However, this process needs …
Influence of Non-stoichiometric Serpentine in Saprolite Ni …
Krupp-Renn process is an energy-saving technology for ferronickel production from saprolitic laterite ores, in which a semi-fused zone (1 300-1 350°C) in the rotary kiln is required for the ...
Improving the rotary kiln-electric furnace process for …
Improving the rotary kiln-electric furnace process for ferronickel production: Data analytics-based assessment of dust insufflation into the rotary kiln
Behavior of Reduction and Growth of Metal in Smelting …
The sampling of raw materials in the rotary kiln, firing experiment by the experimental kiln, and water quenching experiment have been performed, and the clarification of behavior of the reduction and the
Direct reduction of garnierite ore for production of ferro-nickel …
The RKEF process, which includes calcination and pre-reduction at 800–1000 °C for 4–6 h in a rotary kiln, followed by smelting at 1550–1600 °C for 2–3 h in an electric arc furnace for separating ferronickel from the slag, is characterized by intensive energy consumption.
Ring Formation in the Smelting of Saprolite Ni-ore in a Rotary Kiln …
Krupp-Renn process is an energy-saving technology for ferronickel production from saprolitic laterite ores, in which a semi-fused zone (1 300-1 350°C) in the rotary kiln is required for the ...
Material and energy flows in rotary kiln-electric furnace smelting …
The rotary kiln-electric furnace process is the one of the most widely adopted technological process for ferronickel smelting production. A schematic of the RKEF process with rotary dryer, rotary kiln and electric furnace is shown in Fig. 1.As depicted, the RKFF process involves three main processes: the dehydration process in …
Ferronickel Preparation from Nickeliferous Laterite by Rotary Kiln …
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.
Preparation of Ferronickel from Nickel Laterite Ore via Semi …
The rotary kiln-electric furnace (RKEF) process is the main method for producing ferronickel from nickel laterite ore . However, this process is energy intensive …
Control of slag formation in the electric furnace smelting of
Improving the rotary kiln-electric furnace process for ferronickel production: Data analytics-based assessment of dust insufflation into the rotary kiln flame. Johanna M. Romero Yuleisy Pardo +6 authors Arturo Gonzalez-Quiroga
FROM ORE TO FERRONICKEL DESCRIPTION OF THE …
FERRONICKEL DESCRIPTION OF THE TECHNOLOGICAL PROCESS ... produces ferronickel from ore. Ferronickel is iron and nickel alloy, mainly used in stainless steel production. The ore used in Euronickel Industries is ordinary soil (earth) that just contains a ... come out from the rotary kiln, they are called "red pellets". In this department, the ...
Control of slag formation in the electric furnace smelting of
Krupp-Renn process is an energy-saving technology for ferronickel production from saprolitic laterite ores, in which a semi-fused zone (1 300-1 350°C) in the rotary kiln is required for the ...
The evolution of the Greek ferronickel production process
In the present study the reductive behavior of dust from the rotary kilns (R/K), in ferronickel production from nickeliferous Greek laterites, is investigated. The study concerns dust of various ...
Ring Formation in the Smelting of Saprolite Ni-ore in a Rotary Kiln …
The mechanism of SR (Slag-Ring) formation in the actual rotary kiln that proposed in the previous paper has been examined by the firing experiment of the anthracite and limestone composite Ni-ore briquettes using the batch type experimental kiln. The rapid increases in the degree of reduction and CO gas content and the sticking …
Ferronickel Sulfidation: A Solution to Supplying the Battery …
These ores are typically processed via the rotary kiln, electric furnace (RKEF) process to produce Class II nickel products including ferronickel (FeNi, typically 20–40% Ni) and nickel pig iron (NPI, typically 8–12% Ni). ... Allows for the decoupling of the ferronickel, and matte production processes. This is especially beneficial for ...
Large- and Particle-Scale energy assessment of reduction …
The Rotary Kiln-Electric Furnace process is a widely recognized pyrometallurgical route for ferronickel production. This paper focuses on the rotary kiln …
Ferronickel | SpringerLink
Ferronickel is a ferroalloy consisting of nickel and iron. It is mainly used as a nickel additive for steelmaking, for the production of stainless steel and heat-resistant special steel, as well as low-alloy cast iron and cast steel.
Improving the rotary kiln-electric furnace process for …
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 partial reduction in a rotary kiln.
Nickel Laterite Metallurgy | SpringerLink
The factory has five rotary kiln production lines with an annual output of 13,000 tons of nickel in ferronickel. After drying, crushing, and screening, the laterite-nickel ore of humus soil type is mixed with a fusing agent and a reducing agent and briquetted.
Exergy assessment of a rotary kiln-electric furnace smelting …
Semantic Scholar extracted view of "Exergy assessment of a rotary kiln-electric furnace smelting of ferronickel alloy" by Wenjie Rong et al.
Ferronickel Preparation from Nickeliferous Laterite by Rotary Kiln …
Rotary kiln-electric furnace (RKEF) smelting is currently the world-wide mainstreaming process for ferronickel production from nickeliferous laterite ore, in spite of the high power consumption. In this study, aiming to provide some meaningful guidance for ferronickel production of RKEF smelting, reductive roasting followed by smelting …
Evolution of ferronickel particles during the reduction of
The method of producing ferronickel at low temperature (1250–1400°C) has been applied since the 1950s at Nippon Yakin Kogyo, Oheyama Works, Japan. Limestone was used as an additive to adjust the slag composition for lowering the slag melting point. The ferronickel product was recovered by means of a magnetic separator from semi …
Thermal Science and Engineering Progress
The Rotary Kiln-Electric Furnace process is a widely recognized pyrometallurgical route for ferronickel production. This paper focuses on the rotary kiln furnace, an intermediate
Material and energy flows in rotary kiln-electric
This approach has been widely applied in performance analysis of different pyrometallurgical processes, such as lime production in a kiln [6], ferronickel smelting in a rotary kiln-electric ...
Ferronickel Preparation from Nickeliferous Laterite by Rotary …
Rotary kiln-electric furnace (RKEF) smelting is currently the world-wide mainstreaming process for ferronickel production from nickeliferous laterite ore, in spite of the high …
Material and energy flows in rotary kiln-electric furnace …
The rotary kiln-electric furnace process is the one of the most widely adopted technological process for ferronickel smelting production. A schematic of the …
Enhanced Chromium Recovery in the Smelting of Ferronickel …
Rotary kiln-electric furnace (RKEF) process is the main ferronickel production method, which is estimated to have accounted for the production of approximately 15 million tons of ferronickel in 2020, which is two-thirds of the annual nickel output. 15 More importantly, China and Indonesia contributed nearly 12 million tons of …
Control of slag formation in the electric furnace smelting of
Two-thirds of the global nickel output can be attributed to the rotary kiln-electric furnace process. Due to the high contents of MgO and SiO 2 in laterite, a high temperature (∼1600 °C) and corresponding energy (approximately 14 GJ/t-ferronickel) are required during the electric furnace smelting. This work verifies the feasibility of …
Modelling of Nickel Laterite Smelting to Ferronickel
It contains about 35 wt-% free water so is dried in a rotary kiln, with the product still containing approximately 10 - 13 wt-% water. Most of this water is chemically bound within such minerals as garnierite (Mg,Ni) ... Flowsheet of ferronickel production from nickel laterite, (b) schematic of electric furnace for smelting of laterite The ...
Ferronickel
The feed material for ferronickel production is moist saprolite, a type of laterite. The product is refined ferronickel, which is suitable for making stainless steel and other ferrous alloys. ... which is essential for the success of ferronickel smelting. Hot rotating kilns are used for these processes. The internal and external design of kilns ...
(PDF) Large- and Particle-Scale Energy Assessment of
Large- and Particle-Scale Energy Assessment of Reduction Roasting of Nickel Laterite Ore for Ferronickel Production via the Rotary Kiln-Electric Furnace Process ... The rotary kiln furnace shows ...
Ferronickel smelting plant Electric furnace off-gas …
1 Ferronickel smelting plant and process Kawasaki's ferronickel smelting plant follows the process shown in Fig. 1. Ferronickel ore with 1.8-2.2% nickel content is first dried in a rotary dryer, then reduced in a rotary kiln. Next, the ore is smelted in an electric furnace and separated into slag and metal (ferronickel) with
Behavior of Reduction and Growth of Metal in Smelting of …
Krupp-Renn process is an energy-saving technology for ferronickel production from saprolitic laterite ores, in which a semi-fused zone (1 300-1 350°C) in the rotary kiln is required for the ...
Improving the rotary kiln-electric furnace process for ferronickel …
Improving the rotary kiln-electric furnace process for ferronickel production: Data analytics-based assessment of dust insufflation into the rotary kiln flame.
The Nickel Production Methods from Laterites and the Greek …
In the form of a ferronickel alloy, (Fe-Ni), with 20–40% Ni, by the rotary kiln-electric furnace (R/K-E/F) method. In the form of a nickel pig iron, (NPI), with 3–12% Ni, during …
Sulfuric acid leaching of ferronickel and preparation of …
Currently, the pyrometallurgy processes utilized in industry include sintering-blast furnace smelting (BF) process and rotary kiln-electric furnace smelting (RKEF) process, the corresponding ferronickel products primarily used for …
Enhanced Chromium Recovery in the Smelting of Ferronickel …
Rotary kiln-electric furnace (RKEF) process is the main ferronickel production method, which is estimated to have accounted for the production of …