fayalite slag composition

Transforming fayalite slags in inorganic polymers. ... Additionally, the paper reveals how a partly amorphous slag grain dissolves in an alkaline environment. It is revealed that curing conditions strongly affect the mechanical properties while leaching of heavy metals is influenced by a number of factors. Nevertheless, for certain curing ...

In this thesis, alkali activation of fayalite slag was investigated. The slag utilized is a waste by product from nickel production, the activation of which resulted in the formation of a geopolymer binder of acceptable properties.

the chemical composition of Table1, it can be seen that the iron mineral in the slag is mainly fayalite (2FeO·SiO 2 ), which is generally hard to recover in those conventional beneficiation processes.

With reference to the chemical composition of Table 1, it can be seen that the iron mineral in the slag is mainly fayalite (2FeO·SiO 2), which is generally hard to recover in those conventional beneficiation processes. The anthracite, with a fixed carbon content of %, a volatile matter of % and an ash content of %, is used as a ...

Mineralogical composition of these slag carried out in this work showed that the most dominant oxide minerals in these slag are fayalite and magnetite phases while the most dominant sulfide minerals is a solid solution of CuFeS. Flotation was selected as a process for processing the slag with the aim of recovering copper.

Aug 19, 2016· Xore will participate with the Boxray Compact analyzer in a new RD project called "Innovative Quality Assured Fayalite Slag Products". The aim of the project is to improve the fundamental knowledge on slag chemistry and how process parameters can be altered to control the slag composition and long term properties.

1/ to develop new uses of the fayalite slag from base metals extraction whereby a sustainable circular use of the slag can be ensured and 2/ to deepen the knowledge of the influence of process parameters on the environmental and product quality of new and existing slag products. This will be done through studies within the following areas:

for the saturation of liquid silicate slags with solid iron, magnetite, fayalite and dicalcium silicate were taken from literature[1,2]. Representation of the slag equilibrium with wustite required additional correlation capable of describing the behaviour of the wustite phase as a function of composition .

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.

represented by the coarse crystals of fayalite Fe 2SiO 4, while the interspace is filled with pyroxene (Ca, Fe)SiO 3 and olivine–pyroxene eutectic. In terms of phase composition and structure, this microstructure is close to that of typical slag obtained by the same way in the process of autogenous smelting at the other copper

1 1 Variation of natural radionuclides in nonferrous fayalite 2 slags during a onemonth production period 3 Tom Croymans a, 4 Indy Vandael Schreurs a, 5 Mikael Hult b, 6 Gerd Marissens b, 7 Guillaume Lutter b, 8 Heiko Stroh b, 9 Sonja Schreurs a, 10 Wouter Schroeyers a,, 11 12 Highlights 13 Natural radionuclides monitored in nonferrous slag during 1

Slags from three iron smelting and processing sites were investigated. The composition of the slags is connected to the metallurgical processes and the investigation should provide an indication of the process slag from a small bloomery furnace at the archaeological site Waschenberg (Hallstatt period) was investigated. Slags from the medieval period were found near Eisenerz and at ...

CC) additions to the fayalite type slag were theoretically studied under different conditions. From the FactSage calculations, it is concluded that by increasing temperature the liquid slag region expands with different ratios for all fluxing agents. The largest liquid slag region expansion is observed after B 2O 3 addition, but it is limited ...

The interactions between FeSiO and ZnO play an essential role in the recovery of zinc from copper slag. The dissolution and substitution mechanism of ZnO in fayalite were investigated by using TGDSC, XRD, PPMS DynaCool, XPS, Mossbauer and SEMEDS analyses and compared with MS calculation results.

Fayalite is a dominant component of all samples, regarding the shapes of the fayalites, it is assumed that they could have been produced by either being tapping out of furnace or dripped down into a cold slag pit and the presence of fayalite might be preliminarily indicate a relatively high operating temperature of exceed 1, 100°C.

for fayalite slag (A) containing no lime, and the remarkable de­ pendences on oxygen potential and temperatura should be noticed. However, just an opposite dependence on oxygen potential is observ­ ed for ferrite slag (O) where the effect of activity of cao is much superior to oxygen potential.

1/ to develop new uses of the fayalite slag from base metals extraction whereby a sustainable circular use of the slag can be ensured and 2/ to deepen the knowledge of the influence of process parameters on the environmental and product quality of new and existing slag products. This will be done through studies within the following areas:

A mineralogical investigation was carried out in order to reveal the mineral composition of the slag as a basis for eventual reprocessing. The mineralogy of Galaţi slag (GS) shows that it is predominantly silicate (melilite, wollastinite, dicalcium silicate, monticellite, anorthite and fayalite).

the furnace, only fayalite (orthosilicate) in liquid form can be the stable phase. The temperature in the furnace may have reached about 1200 C, as the melting point of fayalite is around 1205 C with a FeO–Fe 2SiO 4 eutectic point of melting at 1177 C (ref. 3). The fayalite in the slag is formed synthetically from melting of 7

Oct 27, 2011· Basics of slag production. Written by Written by Lewis Juckes ... giving a dense rocky material rich in the minerals wustite and fayalite. Ferrochrome Slags . ... This gives a slag of different composition from either blast furnace or steelmaking slag, and which may be glassy or crystalline depending on the cooling routine. ...

composition of blast furnace slag and steelmaking slag, ) Approximately 160 000 tons of blast furnace slag are consumed annually as a raw material for slag silicate fertilizer "Keikaru." With Table 1 Slag silicate fertilizer in fertilizer control law 3)