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 ...
Rotary kiln-electric furnace (RKEF) process is the main technology to deal with nickel laterite for the fer-ronickel alloy production in the world. However, this process needs huge amount of electric power due to the large ratio of slag to metal. Therefore, a novel process was proposed to directly produce ferronickel
Example 2 - 120 kW test . A 120 kW DC-arc furnace was used for the processing of laterite calcine blends, with the objective being the study of the smelting behaviour of materials with SiO 2 /MgO ratios ranging from 1.2 to 3.0. The smelting of laterite types having a range of Fe contents from 15 to 20% was tested at the same time. A part of the test was devoted to the smelting of lateritic ...
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 process ...
What is the reason for setting the rotary kiln with low slope and high rotational speed? Today, the experts of rotary kiln from Henan Hongke Heavy Machinery Co., ltd give us the analysis as following: It isbeneficial to increase the temperature of materials and the temperature for calcining In …
1. Rotary kiln cylinder fully considers cylinder deflection supporting corner to prolong refractory brick life and castable life. 2. Adopt large diameter smaller aspect ratio supporting roller bearings to improve reliability. The bearing is self-aligning bearing. 3. New type …
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 huge amount of electric power due to the large ratio of slag to metal.
The Ni/Co ratio in the smelter feed is generally ~ 40. These ores are smelted to produce either ferro-nickel or matte. In conventional pyrometallurgical processing the ore is dried, calcined (and sometimes reduced) in a rotary kiln and smelted in an electric furnace in the presence of carbon.
12/8/2016· Laterite Quarrying Quarrying of laterite using mobile rotary saw machine Obtaining laterite blocks of standard size from the same strata Obtaining laterite specimens from quarry 11. Decrease in iron content with depth and increase in silica and aluminum (clay) content was seen in the profile.
laterite grinding machine evertravel.be. Laterite Stone Dressing Machine Crusher Mills, Cone . 20131123&ensp·&ensplaterite stone dressing machine patents india . 1525/che/2007 a laterite stone dressing machine patented by 1)moongottil sreedharan shaji Laterite,Nickel ore kiln,rotary kiln process,Rotary Kiln CE,CQC,ISO etc Quality Authentiion Laterite . laterite mining machine
Material and energy flows in rotary kiln-electric furnace smelting of ferronickel alloy with energy saving Article in Applied Thermal Engineering 109 · October 2016 with 389 Reads
laterite soil and the hydrated lime was blended again using a RM 01 rotary machine to create a loose layer with thickness of approximately 0.25 m. After spreading the PCC on the loose layer of the mixture of the laterite soil and the hydrated lime, a RM 01 rotary machine was used
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 ... ratio of the laterite ore and the concentration of unreduced FeO.
Laterite ores of different Fe 2 O 3 /Al 2 O 3 ratios were shown to be superior to red mud when used with sulfur for liquefaction of Yallourn coal at 400°C (Okada et al., 1984). The Fe/S atomic ratio which leads to maximum conversion usually lies between 0.5 and 1.0.
1/2/2014· We claim: 1. A method for manufacturing an austenitic stainless steel from a nickel laterite ore and a chromite ore, said method comprising steps of: a) crushing, screening, and blending the nickel laterite ore, followed by roasting the nickel laterite ore in a rotary kiln to remove free water and crystallization water along with charging a reducing agent into the rotary kiln to obtain a ...
laterite ores was dried through a rotary kiln with a inner diameter of 800 mm and a length of 10000 mm, with a moisture content around 10%, then was crushed by a jaw crusher and a double roll crusher successively, to be passing 40 mm and passing 3 mm, respectively.
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 rotary dryer; the roasting and pre-reduction process in rotary kiln ...
Modelling and optimization of a rotary kiln direct reduction process 55 Figure 3. Kiln temperature distribution for the base case The feed material (bed) enters the kiln at ambient temperature and rapidly heats up due to the hot gas in the freeboard.
FERRONICKEL PRODUCTION AND OPERATION NEW METHOD TO PRODUCE FeNi NUGGETS FROM LOW GRADE ORE ... much more attention has been drawn to laterite processing. Nowadays, the rotary kiln-electric fi.unace ... ratio of nickel was 96%, while the recovery ratio of Fe is only about 63% 5.
The iron ore and coal crushed and screened to respective sizes are fed to rotary kiln through feed tube in pre-determined ratio. The rotary kiln is slightly inclined at an angle 2.5 degree and rotated by AC variable speed motor at a variable speed ranging from 0.2 rpm (revolutions per minute) to 1.0 rpm.
Nickel is an important strategic metal, which is mainly used for stainless steel production. In the recent years, ferronickel has been used as a substitute for electrolytic nickel for alleviating the cost of stainless steel production. Rotary kiln-electric furnace (RKEF) smelting is currently the world-wide mainstreaming process for ferronickel production from nickeliferous laterite ore, in ...
Rotary Kiln Electric Furnace Nickel FTMLIE Heavy Machinery. Rotary Kiln Electric Furnace Nickel Ore after drying in laterite nickel ore by rotary kiln in rotary kiln is heated to 800 DEG C after removal of the ore surface water and crystal water and reducing ore of iron nickel and cobalt oxide into the smelting furnace Compared with laterite kiln process and blast furnace or electric furnace
The invention provides a method for producing ferronickel by processing laterite nickel ore in Sulawesi, Indonesia through an RKEF technology. The method comprises the following steps: 1, prescreening a laterite ore raw material by a 50mm grizzly screen, crushing a part not passing through the screen by a jaw crusher to below 50mm, and mixing the obtained crushed material with a product ...
Laterite nickel processing,preparation of the metal for use in various products. ... Recovery of nickel laterite rotary kiln production process of nickel and iron ratio is very high, are more than 90%. Laterite Nickel Processing.
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. Sulfur is one of the most harmful elements in crude ferronickel obtained via the RKEF process and adversely affects the mechanical properties of the final product. Typically, laterite ores contain insubstantial ...
Laterite nickel rotary kiln is one of the key equipment in the laterite nickel ore rotary kiln smelting process.Ore after drying in laterite nickel ore by rotary kiln, in rotary kiln is heated toDEG C after removal of the ore surface water and crystal water, and reducing ore of iron, nickel, and cobalt oxide, into the smelting furnace.
8/19/2018· Therefore, a novel process is proposed to directly produce ferronickel from nickel laterite ore by semi-molten reduction, which is expected to be realized in a rotary hearth furnace (RHF). The RHF process is able to shorten the flow sheet, decrease the reaction temperature as well as reduce energy consumption.
High Efficient Laterite Nickel Ore Processing Rotary Kiln, Find Complete Details about High Efficient Laterite Nickel Ore Processing Rotary Kiln,Rotary Kiln,Laterite Nickel Ore Processing Rotary Kiln,High Efficient Laterite Nickel Ore Processing Rotary Kiln from Industrial Furnace Supplier or Manufacturer-Jiangsu Pengfei Group Co., Ltd.