Direct Reduction of Nickel Laterites – Malachite Consult

2021-01-19  Malachite Consulting has undertaken testwork and engineering studies for the direct reduction of nickel laterites, followed by hydrometallurgical processing, in order to produce high value products for sale, such as battery grade nickel and cobalt sulphates. The process is more efficient than the Caron process, less energy intensive than smelting

Get Price

Beneficiation of nickeliferous laterite by reduction ...

2012-05-01  Ni beneficiation of laterite ore by using direct reduction process is proposed. Sodium sulfate is capable of intensifying the ... Smelting is necessary for saprolite processing due to the need for the destruction of magnesium-silicate lattice to recover nickel (Bergman, 2003). RKEF process involves two high-temperature steps: calcination and pre-reduction at 850–1000 °C in a rotary kiln and ...

Get Price

direct reduction nickel laterite smelting - MC World

Direct Reduction Nickel Laterite Smelting. direct reduction of nickel ores in rotary kiln.The reduction and magnetic separation of lowgrade nickel laterite was studied at the reaction process was divided into two stages the direct reduction had a and atomic ratio . Production of ferronickel from nickel laterites in a DC ... Example 2 - 120 kW test . A 120 kW DC-arc furnace was used for the ...

Get Price

Direct Reduction Nickel Laterite Smelting

The Smelting Behavior Of Direct Reduction Iron Powder Containing Ni And Cu From Co-Reduction Followed By A Magnetic Separation Of Copper Slag And Nickel Laterite Was Investigated In This Paper. The Results Show That The Perfect Ternary Alloy With 90.66 Fe, 5.24 Ni, 1.20 Cu And Minor Impurities Can Be Prepared By Smelting Under Optimum ...

Get Price

direct reduction nickel laterite smelting

Smelting process of direct reduction iron bearing Ni and . The smelting behavior of direct reduction iron powder containing Ni and Cu from coreduction followed by a magnetic separation of copper slag and nickel laterite was investigated in this paper The results show that the perfect ternary alloy with 9066% Fe, 524% Ni, 120% Cu and minor impurities can be prepared by smelting under optimum ...

Get Price

Smelting process of direct reduction iron bearing Ni and ...

The smelting behavior of direct reduction iron powder containing Ni and Cu from co-reduction followed by a magnetic separation of copper slag and nickel laterite was investigated in this paper. The results show that the perfect ternary alloy with 90.66% Fe, 5.24% Ni, 1.20% Cu and minor impurities can be prepared by smelting under optimum conditions at 1550 °C for 30 min with 1.1 slag basicity ...

Get Price

(PDF) Direct reduction of low grade nickel laterite ore to ...

2017-01-20  Direct reduction of low grade nickel laterite ore to produce ferronickel using isothermal – temperature gradient . January 2017; AIP Conference Proceedings 1805(1):040003; DOI:10.1063/1.4974424 ...

Get Price

Nickel Laterites in SE Asia - CSA Global

Ni output as % of total laterite Ferronickel smelting (inclNPI) 60 Matte smelting 14 Ammonia leaching 14 Acid leaching 12 2008 Figures CSA, CRU Analysis. World Nickel Production by Ore Type 30.0% 32.0% 34.0% 36.0% 38.0% 40.0% 42.0% 44.0% 46.0% 48.0% 50.0% 0 100 200 300 400 500 600 700 800 900 1990 1995 2000 2005 2009 % tonnes Ni ('000) Lateritic Ni Sulphide Laterite % Laterite

Get Price

Preparation of high-grade ferronickel from low-grade ...

2020-06-01  Self-reduction followed by smelting of nickel laterite 3 ... Generation process of FeS and its inhibition mechanism on iron mineral reduction in selective direct reduction of laterite nickel ore. Int. J. Min. Met. Mater., 22 (2015), pp. 901-906. CrossRef View Record in Scopus Google Scholar. Lu et al., 2013 . J. Lu, S.J. Liu, S.G. Ju, W.G. Du, F. Pan, S. Yang. The effect of sodium sulphate on ...

Get Price

Technical Cost Comparison of Laterite Treatment ...

This is the third paper in a series examining the economics of processing a hypothetical nickel-cobalt laterite using commercially applied two processes that are still processes and under development. Part 1 of this series d the processes examined and their applicability to outline limonite and saprolite Part 2 present. ed the results of process modellingdone to quantify reagent and utility ...

Get Price

direct reduction nickel laterite smelting - MC World

Direct Reduction Nickel Laterite Smelting. direct reduction of nickel ores in rotary kiln.The reduction and magnetic separation of lowgrade nickel laterite was studied at the reaction process was divided into two stages the direct reduction had a and atomic ratio . Production of ferronickel from nickel laterites in a DC ... Example 2 - 120 kW test . A 120 kW DC-arc furnace was used for the ...

Get Price

Smelting process of direct reduction iron bearing Ni and ...

The smelting behavior of direct reduction iron powder containing Ni and Cu from co-reduction followed by a magnetic separation of copper slag and nickel laterite was investigated in this paper. The results show that the perfect ternary alloy with 90.66% Fe, 5.24% Ni, 1.20% Cu and minor impurities can be prepared by smelting under optimum conditions at 1550 °C for 30 min with 1.1 slag basicity ...

Get Price

CN102031395A - Method for reducing laterite nickel oxide ...

The invention relates to a method for directly reducing laterite nickel oxide ore to enrich nickel by an ore smelting electric arc furnace. The method comprises the following steps of: crushing the laterite nickel oxide ore until the granularity is 100 to 320 meshes, drying, adding a carbon reducing agent which is 3 to 13 weight percent of the laterite nickel oxide ore, reducing by adopting ...

Get Price

Selective Reduction of Laterite Nickel Ore

2.3 Direct reduction of laterite nickel ore in industrial scale Most laterite nickel ore processing is carried out using Elkem process. The Elkem process uses Rotary Kiln and Electric Furnace (RKEF) to reduce and smelt laterite nickel ore. Commercialization of Elkem process itself began with the development of a pilot plant in 1953­1954. At that time, the Elkem process was used to process ...

Get Price

Direct Nickel Process – Breakthrough Technology

Company among the lowest cash cost nickel producers in the next 5 years that are able to meet the growing global demand. Direct Nickel has developed a game changing pro cess for extracting nickel from laterite deposits. It will position Direct Nickel as one of the lowest cash cost producers in the global nickel industry in the next 5 years. The ...

Get Price

Direct Smelting of Chromite and Laterite Ores with Carbon ...

Direct Smelting of Chromite and Laterite Ores with Carbon under Argon Atmosphere ... The high recovery of iron and nickel in the alloy indicates the highly reducing condition prevailing in the smelting reduction experiments. It is also shown that the solubility of Ni in the slag increases with Ni concentration in the alloy and the FeO concentration in the slag. The chromium content of the slag ...

Get Price

Direct Smelting of Chromite and Laterite Ores with Carbon ...

Stainless steel crude alloy recovery from direct smelting of low-grade chromite, nickel laterite and manganese ores was investigated. The mixed low-grade ores were directly smelted in an elevator ...

Get Price

Influence of laterite nickel ore on extracting iron from ...

2021-03-19  In view of the difficulty of extracting iron from Bayer red mud, a new idea of adding laterite nickel ore into red mud was proposed to prepare a high value-added product. Toward this, the influences of laterite nickel ore on thermodynamic reaction, slagging and smelting reduction of extracting iron from red mud were studied. The results indicated that the product of extracting iron from red ...

Get Price

Technical Cost Comparison of Laterite Treatment ...

This is the third paper in a series examining the economics of processing a hypothetical nickel-cobalt laterite using commercially applied two processes that are still processes and under development. Part 1 of this series d the processes examined and their applicability to outline limonite and saprolite Part 2 present. ed the results of process modellingdone to quantify reagent and utility ...

Get Price

FeaSIBIlI oF NIckel eracIoN FroM INdIaN chroMIe oerBrdeN B ...

The present work demonstrates the extraction of nickel from low-grade chromite overburden by using solid state reduction and direct smelting route. Goethite Quartz are present as major phases whereas chromite, hematite were identified as minor phases in the mineral. Solid state reduction of pellets were carried out inside a horizontal tube furnace at 1000°C, 1200°C, 1400°C for 30, 60, 90 ...

Get Price

direct reduction nickel laterite smelting

The invention relates to the field of metallurgy of nonferrous metals, in particular the production of Nickel and cobalt from laterite Nickel ores. Known methods of processing of laterite Nickel ores into ferroNickel by direct reduction of metals in oresmelting electric furnaces or in a tubular rotary kilns without fusion ore [1].

Get Price

Two-stage reduction for the preparation of ferronickel ...

Keywords: pre-reduction; smelting; ferronickel alloy; nickel laterite ore 1. Introduction An increasing number of studies have focused on the pyrometallurgical and hydrometallurgical processing of nickel laterite ores, and many approaches have been pre-sented. Pyrometallurgical processes include pre-reduction– smelting [1], direct reduction [2–3], semi-molten state re- duction [4], and ...

Get Price

Direct Smelting of Chromite and Laterite Ores with Carbon ...

Direct Smelting of Chromite and Laterite Ores with Carbon under Argon Atmosphere ... The high recovery of iron and nickel in the alloy indicates the highly reducing condition prevailing in the smelting reduction experiments. It is also shown that the solubility of Ni in the slag increases with Ni concentration in the alloy and the FeO concentration in the slag. The chromium content of the slag ...

Get Price

Processing of Nickel Laterite Ores on the Rise

Preliminary Reduction. Once ore has been dried, it is processed in a large-scale rotary kiln to remove chemically bound moisture, as well as the oxide component of the ore. This step is often referred to as pre-reduction. Reduction Smelting. Nickel is further reduced and smelted in an electric furnace.

Get Price

Fe-Ni-Cr Crude Alloy Production from Direct Smelting of ...

tained from the reduction of chromite and laterite ores , respectively, are the important alloying materials in the production of stainless steel. The present study is possibly the first of its kind related to production of crude stainless steel melt by direct smelting of chromium and nickel ore without use of ferrochromium and ferronickel alloys. The feasibility of producing Fe-Ni-Cr crude ...

Get Price

Efficient Utilization of Nickel Laterite to Produce Master ...

2016-07-13  To lower the smelting temperature for laterite processing, a case study of optimization of both slag and alloy systems was investigated to enable the reduction of laterite ore in the molten state for higher separation efficiency and recovery of nickel. Fe-Mo-Ni master alloys were successfully obtained at 1723 K, and these will be used as ...

Get Price

Direct Reduction of Limonitic Laterite Nickel Ore with ...

The increasing demand for stainless steel and the scarcity of sulfide nickel ore affect the increase of laterite nickel ore processing. One of the processes that has been proven can be applied to process laterite nickel ore is direct reduction. In the direct reduction, the reduction atmosphere was adjusted by controlling the volume of CO and CO2 from carbon source materials, such as coal ...

Get Price

(PDF) Nickel Laterite Smelting Processes and Some Examples ...

Nickel Laterite Smelting Processes and Some Examples of Recent Possible Modifications to the Conventional Route. Download. Related Papers. PENGOLAHAN NIKEL LATERIT SECARA PIROMETALURGI. By miu by. Metallurgical Furnaces. By Pedro Avalos Garcia. The Past and the Future of Nickel Laterites. By Hofman Tambunan. Mineral Resource Based Growth Pole Industrialisation - Ferrous Metals Report. By ...

Get Price

Hydro-Pyro Integration in the processing of Nickel Laterites

The natural product for a leaching process is a high grade nickel intermediate either from a direct precipitation process (containing approx. 36% Ni) or via Ion Exchange (>50% Ni). There are many existing pyrometallurgic al facilities which could easily be adapted to take this nickel intermediate giving them significant potential benefits especially as nickel laterite ore grades diminish. The ...

Get Price

Nickel processing - Extraction and refining Britannica

Nickel requires higher smelting temperatures (in the range of 1,350 °C [2,460 °F]) in order to produce an artificial nickel-iron sulfide known as matte, which contains 25 to 45 percent nickel. In the next step, iron in the matte is converted to an oxide, which combines with a silica flux to form a slag. This is done in a rotating converter of the type used in copper production. The slag is ...

Get Price