Effects of Some Additives on Copper Losses to Matte Smelting Slag

Geveci, Ahmet
Topkaya, Yavuz Ali
Derin, Bora
Copper is lost to slag between 0.7 and 2.3 wt.% during the industrial copper matte smelting stage. In the present study, the aim was to minimize these losses in the slag phase by adding some fluxing agents like CaO, B2O3 and calcium borate (namely colemanite-2CaO center dot 3B(2)O(3)center dot 5H(2)O). Eti Copper Inc. (EBI) flash furnace smelter slag containing 0.88 wt.%Cu and matte with the addition each of CaO, B2O3 and colemanite up to 10 wt.% of the total charge were melted in a silica crucible placed in a vertical tube furnace at 1250A degrees C under nitrogen atmosphere for 2 h. The experimental results of matte-slag-flux mixtures showed that the addition of all additives up to 4 wt.% led to a gradual decrease of the copper content in the final slags. Beyond this value, the copper losses to slag increased markedly with the increasing CaO and B2O3 additions. On the other hand, the colemanite addition of more than 4 wt.% did not substantially affect the copper losses to slag.


Investigation of Copper Losses to Synthetic Slag at Different Oxygen Partial Pressures in the Presence of Colemanite
RÜŞEN, AYDIN; Derin, Bora; Geveci, Ahmet; Topkaya, Yavuz Ali (2016-09-01)
Copper losses to slag are crucial for copper matte smelting and converting stages. One factor affecting the copper losses to slag during these processes is partial pressure of oxygen. In this study, theoretical and experimental investigations of oxygen partial pressure effect on copper losses to fayalite type slag in the presence of colemanite were investigated. Theoretical considerations include liquidus temperatures and phase diagrams of the fayalite type slag calculated by the FactSage software program. ...
Usage of boron compounds in copper production
Rüşen, Aydın; Geveci, Ahmet; Topkaya, Yavuz Ali; Department of Metallurgical and Materials Engineering (2013)
Copper losses to slag are generally between 0.7-2.3% during the copper matte smelting stage. In this study, the aim was to reduce these losses in the slag phase. For this purpose, usage of some additives (especially calcined colemanite labeled as CC, boric oxide-B2O3 and calcium oxide-CaO as well) as flux material was investigated. The flash furnace matte-slag (FFM-FFS) obtained from Eti Copper Inc. and a master matte-slag (MM-MS) produced synthetically were used as starting materials. Additives were tested...
Use of boron compounds as binders in iron ore pelletization
Sivrikaya, Osman; Arol, Ali İhsan (2010-05-01)
Low grade iron ores with impurity gangue minerals containing silica and alumina must be upgraded to an acceptable level of iron content. Concentrates, due to their fine sizes, are not suitable to be directly charged to the iron-making processes such as the blast furnace or the DR-plant. Hence, an agglomeration technique should be applied to fine concentrate. The most commonly employed one is pelletizing in iron ore industry. In pelletizing, iron ore, water and a binder are balled in a mechanical disc or dru...
Effect of carbonate alkalinity on the flocculation behavior of hematite
Molaei, Aysan; Arol, Ali İhsan; Department of Mining Engineering (2012)
As high grade iron ore deposits are rapidly depleted, the minerals industry is increasingly obliged to enrich their ores and process lower grade iron ores. Production of large quantities of fine ores as tailings or by-products in mining operations and mineral liberation at fine particle sizes have led to the development of concentration methods employed to fine ores. Selective flocculation is one of the beneficial methods which can be used in recovering of very fine particles It is obvious that process wate...
Effects of Bentonite Combinations and Gelatin on the Rheological Behaviour of Bentonite – Apple Juice Dispersions
Dik, Tunay; Özilgen, Mustafa (Elsevier BV, 1996-11)
Rheological behaviour of bentonite – apple juice suspensions were experimentally determined at 25°C, within the shear rate range of 4.3 to 43.1 s−1with 0.90, 1.33 and 2.66 g/L bentonite mixtures and 0 to 0.25 g/L (on dry basis) gelatin concentrations. The mixtures consisted of 100%, 80%, 60%, 40% 20% and 0% Ca-bentonite and balance Na-bentonite combinations. The experimental data were described with the power law as τ =Kγ.1.56. The consistency index was related to the calcium, sodium and gelatin concentrati...
Citation Formats
A. RÜŞEN, A. Geveci, Y. A. Topkaya, and B. Derin, “Effects of Some Additives on Copper Losses to Matte Smelting Slag,” JOM, pp. 2323–2331, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30059.