The smelting process of ilmenite is an unusual case where slag is the primary product, and the by-product is a valuable raw material to get pig iron and other metallic components 14,15.
The HIsmelt smelting reduction process is an effective method to smelt vanadiumtitanium magnetite. In the present study, the phase composition of the high-titanium slag produced under different temperature and composition conditions under the HIsmelt smelting reduction process was first analyzed via thermodynamic calculations. An ...
May 30, 2019 in the smelting process, which is favorable to selective separation of titanium slag and metallic iron. Consequently, oxygen potential has great signicance in
Aug 06, 1998 A process for producing titanium slag which is low in radioactivity wherein molten titanium slag, produced by smelting ilmenite in the presence of a reductant in a DC electric arc furnace, is separated from molten iron, boron in an amount which is less than 2.5% equivalent B 2 O 3 of the slag is blended with the molten slag which thereafter is allowed to cool to form a glassy phase which ...
Apr 08, 2018 In Canada, Quebec Iron and Titanium Corp. (QIT) employs an electric arc smelting process that converts Allard Lake Ilmenite rock concentrate grading about 35 wt pct TiO2 to pig iron and about 900,000 tons per year of slag that contains approximately 72 wt pct TiO2, 13 wt pct FeO, with 6 wt pct CaO MgO and 0.2 wt pct MnO impurities.
4.1. TiO2 Slag Ilmenite smelting is a carbothermic process to upgrade the mineral ilmenite, yielding TiO2-rich slag (which is mainly used as a feed stock for TiO 2 pigment production) as primary pr oduct and pig iron as a by-product. This smelting process is unusual in having slag as its primary product and metal as a
Dec 01, 2018 Abstract. The suitable titanium slag composition with high titanium content for electric furnace smelting of vanadium titanomagnetite was investigated through thermodynamics and related phase diagram analysis. According to the thermodynamic results, low-melting-point regions and MgTi 2 O 5 primary phase area in the phase diagrams, the suggested titanium slag composition for the present vanadium
as a by-product from the ironmaking process, while the diluted titania slag is stockpiled. Fluxless smelting in a direct-current open-arc furnace is proposed as an opportunity to improve iron and vanadium recovery and potentially unlock the titanium as a slag product. Slags produced from a pilot study are
Jan 01, 2012 The rational Ti slag grade is related to reduction degree, FeO content and assistant dissolve impurities, with important influence on smelting condition and acid decomposition.
Process and plant for producing titanium slag from ilmenite Download PDF Info Publication number EP2976438B1. EP2976438B1 EP13713116.5A EP13713116A EP2976438B1 EP 2976438 B1 EP2976438 B1 EP 2976438B1 EP 13713116 A EP13713116 A EP 13713116A EP 2976438 B1 EP2976438 B1 EP 2976438B1 Authority EP European Patent Office
Smeting Process. Our special smelting process extracts three value products from the ore, namely, High Purity Iron, Vanadium Slag and Titanium Slag. It is mainly a three-stage reduction-converting-atomizing process. Mined ore is crushed to size and fed to the DC furnace together with coke and fluxes and heated to 1600C to reduce the iron and vanadium to metal, producing a vanadium-bearing Iron melt, with 65% TiO2-rich slag
process staging. Similarly for titanium extraction, an organic mixture was tested to prepare isotherms for pilot plant operation. Using the data produced during the bench-scale test program, equipment was setup and solutions were prepared to operate a continuous counter-current process for the extraction of iron and titanium.
titanium processing, the extraction of titanium from its ores and the preparation of titanium alloys or compounds for use in various products.. Titanium (Ti) is a soft, ductile, silvery gray metal with a melting point of 1,675 C (3,047 F). Owing to the formation on its surface of an oxide film that is relatively inert chemically, it has excellent corrosion resistance in most natural ...
The titanium slag produced from this process represents an important feedstock for the manufacture of titanium dioxide pigment by the sulphate process. In the case of the chloride process, the titanium-rich slag is further acid-leached by a hydrometallurgical process.
Early research on the smelting process of high-titanium slag also found that the chemical composition of hightitanium slag has always maintained the - composition of the theoretical compound M3O5, and its cations M are mainly Fe. 2 and Ti. 3, but the specific formation mechanism of this form is not clear. 55.
Mar 14, 2020 High carbon ferromanganese manufacturers add flux during smelting mainly because its addition can play the following roles 1. Make slag from harmful impurities. 2. Control the melting temperature of slag. Mineral coal gangue and other silicon, the melting point of silicon is 1983 k.
Blast furnace slag is an industrial solid waste. Slag discharged in the process of blast furnace ironmaking, also known as blast furnace slag, can be divided into steelmaking pig iron slag, casting pig iron slag, manganese iron ore slag and so on. Some regions of China and the Soviet Union and other countries use titanium magnetite to make iron and discharge vanadium and titanium blast furnace ...
smelting is a process that is designed to remove only iron oxide given the high purity of many natural ilmenites, this is sufficient to yield high-titanium slag which meets the purity requirements of
The distribution of titanium, calcium, magnesium, phosphorus, manganese and other elements in the high titanium slag smelting process has a great impact on the performance of the product. In this paper, the theoretical research and numerical simulation of element distribution in smelting process of high titanium slag in recent years are reviewed.
Smeting Process. Our special smelting process extracts three value products from the ore, namely, High Purity Iron, Vanadium Slag and Titanium Slag. It is mainly a three-stage reduction-converting-atomizing process. Mined ore is crushed to size and fed to the DC furnace together with coke and fluxes and heated to 1600C to reduce the iron and ...
The direct reduction-electric furnace smelting process is also more environmentally friendly than blast furnace process. The titanium-bearing electric furnace slag (TEFS) of the direct reduction-electric smelting process contains 40-60 wt.% TiO2 which is much higher than the TiO 2 content of titanium-bearing blast furnace slag.
There were two controlling factors, which should be kept balance of raw input and energy during titanium slag smelting in closed high power direct current electric arc furnace, DC furnace for short. The first factor contains compositions and ratio of input raw materials. Compositions of the raw could influence the progress and technical indicators of DC furnace smelting, and on the meanwhile ...
(Nayl et al., 2009). In spite of high power consumption, smelting of ilmenite or titanium-bearing ore has several advantages over the synthetic rutile route by chemical process. The major advantages of the slag technology are high titanium content, low waste generation, being suitable for
Examples of chemical compositions of smelting slag from iron sand are shown in Table 1. About 5% Al 2O3, 2.5% CaO and MgO, and more than 1% of Na2OK2O are contained and these oxides may decrease the melting point. For more reliable evaluation of the ancient smelting process, the effect of these oxides on the melting point must be considered. In
Aug 14, 2018 The reacted titanium slag was leached in a stirred water solution, using a hatch process, in a 189-L tank. A 9.1 wt pct (10-to-1 water-to- slag ratio) slurry was leached in 2 h. The leached slag was available for further processing into TiO2 or Ti sponge metal. Results
titanium processing - titanium processing - Extraction and refining The production of titanium metal accounts for only 5 percent of annual titanium mineral consumption the rest goes to the titanium pigment industry. Pigments are produced using either a sulfate process or a more environmentally acceptable carbo-chlorination process (described below) that converts TiO2 into TiCl4.
Smelting Process The grade of ilmenite produced at RBM is of too low a grade to be used directly in the production of pigment or synthetic rutile. The TiO2 content is increased by smelting the ilmenite with anthracite to produce a slag containing approximately 85 per cent titanium dioxide and a high-purity (low-manganese) pig iron as a co-product.5
The invention discloses a method for extracting titanium from vanadium-titanium magnetite The method comprises the following steps adding sodium or potassium salt additive in the reduction smelting of an iron ore concentrate electric stove to obtain liquid iron and titanium-containing slag wherein vanadium and iron are reduced to enter liquid iron under a smelting high temperature...
Present study determines conditions for titanium magnetite concentrate processing with fairly complete titanium conversion to the slag and iron and vanadium separation in the hot metal. It is quite difficult to process titanium magnetite concentrate in the blast furnaces due to low fusibility of charge and direct electrical melting which cause process instability.
Nov 22, 2019 According to previous studies 8,9, highly reduced TiO 2 slag with below 5 wt% FeO can be obtained by adding Na 2 O as flux in the ilmenite smelting process. Since the ilmenite smelting slag ...
However, the titanium dioxide is easily over-reduced to titanium carbonitride in the smelting process, which will cause slag thickening, slag foaming and slag-iron mixing 3,4,5,6. For the CVTM blast furnace smelting behavior with a high-basicity pellet, few corresponding kinetics studies have been conducted.
Aug 01, 2021 In order to gather the molten iron and primary slag from the smelting process, a graphite crucible (95 mm in O.D., 90 mm in I.D., and 80 mm in depth) was placed below the furnace. The temperature in the smelting process was monitored by an Stype thermocouple. The pressure lever with the graphite rod was inflicted on the upper coke.