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Ferronickel Slag Composition

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The ferronickel slags exhibit melting points of around 1500 C and are tapped at temperatures about 50 C above the melting point to achieve a good separation between slag and metal. Both oxides MgO and SiO 2 are entirely transferred to the slag and so the ore has a direct inuence on the slag composition. In Fig.

the recovery of magnesium from ferronickel slag, the reactions between ferronickel slag and dierent reducing agents, including Si, FeSi, Al, and C, were investigated.

The effects of temperature and basicity of the slag on the separation between the slag and metal were investigated, the results revealed that it is reasonable to achieve the ferronickel alloy nugget directly at 1400176C when the quaternary basicity m CaO m MgOm SiO 2 m Al 2 O 3 was fixed at 0.60.

High-carbon ferronickel shot HCS 2.Product chemical composition. The following are the chemical compositions of standard products. Ni C Si Mn P S Cr Cu Co Sn HCS 16.0 or higher 3.0 below 5.0 or lower 0.3 or lower 0.05 or lower 0.03 or lower 2.5 or lower 0.

Ferronickel smelting of lateritic ores is generally performed by using fossil fuels coal, oil, natural gas, etc. as a reductant in a rotary kiln. Nickel and cobalt are firstly reduced because iron has greater affinity to oxygen.

The composition of slag varies upon the type of furnace and charge, the desired grade of steel purity and the furnace operation conditions.

The structure of a slag can thus be represented by the mole fractions X of Oo, O-, and O2-present. Consequently, it is customary to divide various constituents into either network formers e.g. SiO 2 or network breakers CaO, Na 2O, etc..

In a recent work, the properties and hydration of ferronickel slag blended cements containing 5, 10, 15, and 20 wt cement replacement were examined cemeall nt mixtures satisfied the requirements for strength class 42.5 as per EN 197-1.

4.2. The Chemical Compositions of Slag and Iron and Ni, Fe Yield of the Laterite Ore after Reduction and Melting. The chemical compositions of slag and iron after reduction at 1200C and melting at 1500C or 1550C were shown in Table 5 and Table 6 respectively.

The feasibility of recovering magnesium from ferronickel slag by vacuum reduction was evaluated. The thermodynamic calculations indicated that the magnesia in slag can be reduced to gaseous magnesium by Si, FeSi, Al, and C, with the minimum reduction temperatures of 2324, 2530, 1678, and 2580 K at 100 000 Pa, respectively.

A Ferronickel Slag produced by the SLN Based in New Caledonia, the Soci233t233 Le Nickel is the world leader of ferronickel. Its plant is also producing slag used for decades in New Caledonia as aggregate replacement Le SLAND from natural sand applications up to supplementary cementitious material.

the large ratio of slag to metal. Therefore, a novel process was proposed to directly produce ferronickel alloy nugget at a related low temperature from nickel laterite by the semi-molten reduction in the reactor like the rotary hearth furnace RHF.

The formation of ferronickel nugget from laterite was studied in the present study. The conclusions can be summarized as follows 1 Temperature and the basicity are the primary factors to ensure the separation between metal and slag. 2 The ferronickel nugget can be formed when the basicity is above 0.

This study evaluates the combined use of granulated ferronickel slag FNS as fine aggregate and ground granulated ferronickel slag GFNS as a supplementary cementitious material SCM in concrete.

Electric Arc Furnace Slag EAFS In the present study EAFS was used as a substitute for limestone aggregates in the production of H-shaped concrete paving blocks CPB.

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