Lateritic Nickel Rotary Kiln For Sale

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Lateritic Nickel Rotary Kiln Introduction

Laterite nickel ore rotary kiln is the main equipment for producing ferronickel after calcining and smelting laterite nickel ore. It is one of the key equipments of rotary kiln electric furnace (RKEF) smelting process to produce ferro-nickel by direct reduction method and also to extract nickel from the ore by high temperature.

What is Nickel Laterite?

Laterite nickel ore is an important nickel resource, which mainly consists of iron, silicon, magnesium and other elements with nickel, usually reddish-brown in color. Beneficiation of nickel laterite ore has certain complexity, and its characteristics include wide distribution and relatively low nickel content.

nickel-laterite-ore — Nickel Laterite Ore

Laterite nickel ore conveying

Lateritic Nickel Rotary Kiln Technical Parameters

Specifications(m)	Angle of Inclination(%)	Capacity(t/h)	Rotate speed(r/min)	Motor power(kW)	Total weight(t)
Φ2.5×40	3.5	180	0.11-2.44	55	149.61
Φ2.5×50	3	200	0.62-1.86	55	187.37
Φ2.5×54	3.5	204	0.48-1.45	55	196.29
Φ2.7×42	3.5	320	0.10-1.52	55	198.5
Φ2.8×44	3.5	400	0.437-2.18	55	201.58
Φ3.0×45	3.5	500	0.5-2.47	75	210.94
Φ3.0×48	3.5	700	0.6-3.48	100	237
Φ3.0×60	3.5	300	0.3-2	100	310
Φ3.2×50	4	1000	0.6-3	125	278
Φ3.3×52	3.5	1300	0.266-2.66	125	283
Φ3.5×54	3.5	1500	0.55-3.4	220	363
Φ3.6×70	3.5	1800	0.25-1.25	125	419
Φ4.0×56	4	2300	0.41-4.07	315	456
Φ4.0×60	3.5	2500	0.396-3.96	315	510
Φ4.2×60	4	2750	0.4-3.98	375	633
Φ4.3×60	3.5	3200	0.396-3.96	375	583
Φ4.5×66	3.5	4000	0.41-4.1	560	710.4
Φ4.7×74	4	4500	0.35-4	630	849
Φ4.8×74	4	5000	0.396-3.96	630	899
Φ5.0×74	4	6000	0.35-4	710	944
Φ5.6×87	4	8000	Max4.23	800	1265
Φ6.0×95	4	10000	Max5	950×2	1659

Lateritic Nickel Rotary Kiln Working Principle

The nickel laterite ore is mixed with a reducing agent (e.g., coal dust or coke) and entered into a rotary kiln, which slowly moves toward the discharge end under the action of kiln rotation (1-3 rpm) and tilting (2-4°). The temperature inside the kiln is controlled at 800-1200°C, so that the nickel oxides are reduced to nickel metal or nickel-iron alloy, while the crystallized water and volatile matter in the ore are removed. The roasted product is cooled and then entered into the subsequent magnetic separation or wet smelting process to realize the extraction of nickel. Rotary kilns are often equipped with waste heat recovery and flue gas treatment systems to improve energy efficiency and reduce pollution.

Rotary Kiln-Electric Furnace (RKEF) High Temperature Smelting of Ferro Nickel

The Rotary Kiln-Electric Furnace (RKEF) high-temperature smelting process for ferro-nickel is an emerging ferro-nickel smelting technology in recent years, which is capable of efficiently processing nickel laterite ore. The core process is as follows: firstly, the nickel laterite ore is dried, preheated and partially reduced by rotary kiln to remove the moisture and volatile matter, so that the nickel and iron oxides are initially reduced; then it enters the electric furnace for high-temperature smelting, and after slag-gold separation, it gets the high-grade ferro-nickel, which is finally used in the production of stainless steel, and then it is used in the production of stainless steel, which is used in the production of stainless steel.

Rotary kiln-electric furnace (RKEF) high-temperature smelting of ferro-nickel process has the advantages of low energy consumption, high recovery rate (nickel recovery rate>90%), adaptable to medium and high-grade ore, etc. It is the current benchmark technology of nickel laterite ore pyrometallurgical smelting, and it is especially widely used in resource-rich areas such as Indonesia.