Fayalite slag, a predominately iron-silicate slag from non-ferrous metals refining, is close to the composition of this 'early' slag. Table 1 gives a typical chemical composition of the fayalite slag used in this study, obtained from a Canadian nickel producer. As superimposed on Figure 1, the equilibrium between fayalite slag and lime is
The microstructure of inorganic polymers (IP) formed from fayalite slag was investigated as a function of the composition of different activating solutions. The starting slag was 80 wt% amorphous, and after activation using sodium silicate solutions with varying SiO 2 /Na 2 O molar ratios, the amorphous phase dissolved and a binder phase was formed.
addition, 10 or 25 wt% fayalite slag were mixed with the synthesised AOD slag and then heat treated at 1620°C for 1 h in air, with a heating and cooling rate of 5°C/min. Table 1: Chemical composition of the fayalite slag characterised by XRF (in wt%) The thermodynamic calculations were performed by FactSage 6.2. The chemical
18-11-2019· Alkali-activated materials (AAMs) are an environmentally friendly option for Portland cement mortars and concretes. Many industrial residues such as blast furnace slag and coal fly ash have been extensively studied and applied as AAM precursors but much less focus has been on the use of fayalite slags. Water-cooled fayalite slag comes in granular form, which is then milled into fine powder ...
The main phases composition of the slags are as follows: fayalite-type silicate phases with impurities, kirschsteinite and laihunite; pyroxenes of the augite-type and …
In this Example, molybdenum slag is used as a fayalite-containing material. Batches of glass were formulated in accordance with Table II below using the method described in Example 1. Iron is added to the batch either as rouge (Batch A) or molybdenum slag (Batch B) …
Slag had composition of fayalite or olivine (58 to 68 mass% FeO, 2 to 12 mass% CaO, 20 to 28 mass% SiO 2), respectively. The glassy solidified phase between fayalite crystals has composition: 45 to 55 mass% SiO 2, 12 to 20 mass % Al 2 O 3, 2 to 5 mass% CaO, 12 to 24 mass% K 2 O, and 8 to 15 mass% FeO. Slag contains FeO in form of dendrites or ...
Fayalite slag, pure phosphoric acid (85%), and distilled water were mixed at an l/s mass ratio of 1.38, with a high shear mixer for about 2 min to obtain a homogeneous slurry. The ratio of fayalite slag to quartz sand by mass that was chosen for the preparation
01-09-2015· The composition of the ZnO-containing fayalite slag as supplied by a copper producer is listed in Table 1. Other minor elements, such as K, S, P, Cu, Mn, Pb, and Ni, are accounted as "others" in …
The copper slag used in this study contained 16% CaO. Therefore, it was considered that slag consists of Fe 2 SiO 4 (fayalite), Ca 2 SiO 4 (calcium orthosilicate), CaFeSiO 4 and Fe 2 O 3 [14,15]. CaO affects the decomposition of fayalite and reduction of iron oxide, and changes the chemical composition of slag.
Table 1 lists the chemical composition of the fayalite slag (Metallo Chimique N.V.), measured by XRF technique. It is noted that the slag has only 2.22 wt% CaO, whereas SiO 2 content reaches 27.93 wt%. The other major oxides are FeO, ZnO and Al 2 O 3. Chemical composition of industrial AOD slag is also summarised in Table 1.
Request PDF | Composition Modification of ZnO Containing Fayalite Slag from Secondary Source Copper Smelting: TMS/7th | Fayalite based slag is formed during the smelting process of secondary ...
15-05-2017· Iron and SiO 2 accounted for 70% of the elemental composition of the slag, and 95% of the Fe was associated with fayalite and magnetite. Cu was mostly associated with Cu-sulfides, fayalite and metallic Cu (Fig. 1, Table 3). Zn was mostly distributed in fayalite, glassy silicates and magnetite.
These research is concerned with alkali activation of fayalite slag glasses that are rich in iron and silica with little amounts of Ca-Al-Na-K-P-Ti-S-Cl. 1.2 Aims To develop a geopolymerization matrix for fayalite slag. 1.3 Objectives This research intends to achieve this stated objectives
Besides fayalite, which possibly occurs as inclusions in hematite from the LdS12 slag, the most commonly observed olivine group member is forsterite.It is exclusively found as rounded aggregates, in which it acts as the matrix phase (Figure 13.2.1A).These aggregates are usually red due to inclusions of hematite; relatively large chromite-rich spinels may also be present inside.
Slag had composition of fayalite or olivine (58 to 68 mass% FeO, 2 to 12 mass% CaO, 20 to 28 mass% SiO 2), respectively. The glassy solidified phase between fayalite crystals has composition: 45 to 55 mass% SiO 2, 12 to 20 mass % Al 2 O 3, 2 to 5 mass% CaO, ...
General Fayalite Information : Chemical Formula: Fe++2SiO4 : Composition: Molecular Weight = 203.78 gm Iron 54.81 % Fe 70.51 % FeO: Silicon 13.78 % Si 29.49 % SiO 2: Oxygen 31.41 % O: 100.00 % 100.00 % = TOTAL OXIDE
According to the slag composition, cooling rates and temperature, the primary phase could be CA, or C5A3, or C3A, or C3MA2, or MgO, and the crystal morphology changes from dendrites to faceted ...
15-02-2019· Different amounts of ZnO were added into the fayalite to study the dissolution behaviour of ZnO in the fayalite, with the sample compositions shown in Table 1. First, a mixture of ZnO and Fe 2 SiO 4 was evenly blended by grinding in an agate mortar, and then, the mixture was placed into a corundum crucible (30 mm inner diameter × 35 mm outer diameter × 37 mm height).
Fayalite (Fe 2 SiO 4; commonly abbreviated to Fa) is the iron-rich end-member of the olivine solid-solution series. In common with all minerals in the olivine group, fayalite crystallizes in the orthorhombic system (space group Pbnm) with cell parameters a 4.82 Å, b 10.48 Å and c 6.09 Å.. Fayalite forms solid solution series with the magnesium olivine endmember forsterite (Mg 2 SiO 4) and ...
20-04-2016· Copper slag, or fayalite slag, is a by-product obtained during the matte smelting, converting and refining of copper (Fig. 7.11). 54,59 It has been estimated that for every tonne of copper produced, about 2.2 tonnes of slag is generated, 60 as a consequence of the relatively low grades of copper concentrates now available.
04-01-2018· The microstructure of inorganic polymers (IP) formed from fayalite slag was investigated as a function of the composition of different activating solutions. The starting slag was 80 wt% amorphous, and after activation using sodium silicate solutions with varying SiO 2 /Na 2 O molar ratios, the amorphous phase dissolved and a binder phase was formed.
The main goal of this research was to investigate. and measure the thermal conductivity of solid. copper matte and fayalite slags between 300 ° C. and 900 ° C, and that of liquid fayalite slag ...