Send a Message

Contact Us

Company Address

Zhengzhou, China.

Smelting process of direct reduction iron bearing Ni and

2019-11-20  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

Selective Reduction of Laterite Nickel Ore

Keywords: laterite nickel ore, selective reduction, direct reduction, additives 1. Nickel ­ General Nickel is an important alloying metal with widerange application in the industry.1) Nickel is one of the most important strategic metals which is widely applied to stainless

Beneficiation of nickeliferous laterite by reduction

2012-5-1  Highlights Ni beneficiation of laterite ore by using direct reduction process is proposed. Sodium sulfate is capable of intensifying the reduction roasting of laterite. Average particle size of ferronickel grows up to 50 μm when reduced with Na 2 SO 4. Selective enrichment of Ni can be realized by suppressing the metallization of Fe. New-born troilite (FeS) facilitates the aggregation of

Direct Reduction Process an overview ScienceDirect

Nickel laterite ores are reduced by carbon monoxide before an ammoniacal leach. Nickel oxide reduction reactions are simple one-step reactions, as follows: (1.22) Smelting and direct reduction technologies are being typically indicated as alternatives to the BF; in

Effects of direct reduction process on the

2020-10-1  A coal-based direct reduction process was used to reduce the nickel laterite ore under a constant C: O ratio (1.2: 1) and reduction time (90 min). The effect of basicity and reduction temperature on microstructure and reduction characteristics and of carbon-bearing nickel laterite

Reductive Smelting for the Recovery of Nickel in a DC Arc

2013-6-17  4 Application to Ferronickel Smelting The smelting of nickel laterite ores to produce ferronickel [5, 6] essentially involves a trade-off between recovery and grade. The greater the degree of reduction, the greater the recovery of nickel. However, as an increasing quantity of iron (and some more nickel) is reduced to the metallic state,

Two-stage reduction for the preparation of ferronickel

2017-8-26  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 coal-based self-reduction [5], whereas hy-drometallurgical processes include the Caron process [6], reduction roast leaching [7–8], atmospheric and high

Production of ferronickel from nickel laterites in a DC

2012-2-7  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

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.

Welcome to Altilium Group Ltd (formerly Direct Nickel

The DNi Process TM. The global demand for nickel is rapidly increasing. The DNi Process TM is the only proven method of maximising mine revenue whilst also protecting the environment.. Our revolutionary process doubles the world’s nickel reserves sourced from lateric ore, and almost doubles the annual revenue of a laterite mine when compared to the ferro-nickel process.

direct reduction of nickel ores in rotary kiln

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 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.

Selective Reduction of Laterite Nickel Ore

The novel method is done via direct reduction and magnetic separation. In laterite nickel processing by direct reduction, the challenges are to conduct selective reduction of nickel and to let iron unreduced. The addition of additive in the direct reduction process is needed to achieve this selective reduction.

Direct smelting process for stainless steel crude alloy

2017-3-16  Direct smelting process for stainless steel crude alloy recovery from mixed low-grade chromite, nickel laterite and manganese ores Romie D. Laranjo 1 Nathaniel M. Anacleto 2 1 College of Engineering, Jose Rizal Memorial State University, Dapitan City

Two-stage reduction for the preparation of ferronickel

The preparation of ferronickel alloy from the nickel laterite ore with low Co and high MgO contents was studied by using a pre-reduction–smelting method. The effects of reduction time, calcination temperature, quantity of reductant and calcium oxide (CaO), and pellet diameter on the reduction ratio of Fe and on the pellet strength were investigated. The results show that, for a roasting

Laterite Nickel Ore Roasting Kiln haagdeko.de

Laterite,nickel ore kiln,rotary kiln process,rotary kiln,direct reduction of iron ore from tunnel kiln,direct reduction, iron ore, rotary hearth furnace, laterite nickel ore rotary kiln pcmachine large laterite nickel ore roasting reduction rotary kiln is one of the key equipment of the laterite kiln smelting

Production of ferronickel from nickel laterites in a DC

2012-2-7  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

Nickel Smelting and Refining IFC

Nickel 1 Sulfur dioxide 2 kg/t sulfuric acid. Table 2. Effluents from Nickel Smelting (milligrams per liter, except for pH) Parameter Maximum value pH 6–9 TSS 50 Nickel 0.5 Iron 3.5 Total metals 10. Note: Effluent requirements are for direct discharge to surface waters.

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

2014-1-14  from the reduction of chromite and laterite ores, respec-tively, are the important alloying materials in the produc-tion 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, in

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.

Environmental Guidelines for Nickel Smelting and Refining

2018-8-5  Nickel 1 Sulfur dioxide 2 kg/t sulfuric acid Liquid Effluents For nickel smelters the following effluent emissions levels should be achieved: Effluents from Nickel Smelting Parameter Maximum value milligrams per liter (mg/L) PH 6-9 Total suspended solids 50 Nickel 0.5 Iron 3.5 Total metals 10 Note: Effluent requirements are for direct

direct reduction of nickel ores in rotary kiln

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 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.

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.

Nickel Smelting and Refining IFC

Nickel 1 Sulfur dioxide 2 kg/t sulfuric acid. Table 2. Effluents from Nickel Smelting (milligrams per liter, except for pH) Parameter Maximum value pH 6–9 TSS 50 Nickel 0.5 Iron 3.5 Total metals 10. Note: Effluent requirements are for direct discharge to surface waters.

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

2014-1-14  from the reduction of chromite and laterite ores, respec-tively, are the important alloying materials in the produc-tion 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, in

Nickel: smelting, producing-Metalpedia

Nickel: smelting; Extraction and purification; Nickel is recovered through extractive metallurgy: it is extracted from its ores by conventional roasting and reduction processes that yield a metal of greater than 75% purity. In many stainless steel applications, 75% pure nickel can be used without further purification, depending on the composition of the impurities.

Preparing high-purity iron by direct

A new process for preparing high-purity iron (HPI) was proposed, and it was investigated by laboratory experiments and pilot tests. The results show that under conditions of a reduced temperature of 1075°C, reduced time of 5 h, and CaO content of 2.5wt%, a DRI with a metallization rate of 96.5% was obtained through coal-based direct reduction of ultra-high-grade iron concentrate.

Environmental Guidelines for Nickel Smelting and Refining

2018-8-5  Nickel 1 Sulfur dioxide 2 kg/t sulfuric acid Liquid Effluents For nickel smelters the following effluent emissions levels should be achieved: Effluents from Nickel Smelting Parameter Maximum value milligrams per liter (mg/L) PH 6-9 Total suspended solids 50 Nickel 0.5 Iron 3.5 Total metals 10 Note: Effluent requirements are for direct

Hydro-Pyro Integration in the processing of Nickel Laterites

2021-2-4  The world’s resources of nickel are found as sulphides and laterites and while almost ¾ of the world’s resources of nickel are found as laterites, currently less than half of the primary nickel production comes from laterite sources as illustrated below. (A.D. Dalvi et al., 2004; ref

[PDF] Pilot plant production of ferronickel from nickel

2021-2-25  Abstract Laterites and other oxidized nickel ores constitute a very important part of world-wide nickel reserves. The development of nickel oxide ore smelting has drawn heavily on iron and steel metallurgy. In ferronickel production, the nickel oxide and part of the iron oxide are reduced to metal in an electric furnace to form immiscible layers of slag and metal.

Metallurgical and Market Acceptance Test Work FPX

2021-2-23  The 2013 test work demonstrated that smelting Decar concentrates on a stand-alone basis, with the addition of a reductant and fluxing agents, produces a high-grade product of 35%-50% nickel (the remainder being almost totally iron, plus minor chromite), compared to typical ferronickel products containing 15%-40% nickel.