titanium slag lting process

In the industrial production of titainum and titanium alloys, the most commonly used techniques are vacuum arc remelting (VAR) and cold hearth melting. Vacuum Arc Remelting VAR technology can refine the ingot structure in titanium alloy smelting and improve the purity of the product. The main developments of this technology in recent years are as follows: Fully-automatic VAR re-dissolution

The present invention provides a method for efficiently manufacturing a titanium oxide-containing slag from a material including titanium oxide and iron oxide, wherein a reduction of titanium dioxide is suppressed and the electric power consumption is minimized.

oxides, etc.) were reduced jointly with iron oxide the purity of produced titanium slag increases. off -gas 11.MENIT LIME ESCM Reaction vessel Fig. I Process flow diagram of ferrotitanium manufacturing The produced titanium slag was tapped into the tundish after the expiration of melting period and the complete separation of metal and slag phases.

Jan 28, · Titanium alloys can be welded with my experience. I am a metallurgical engineer, technology consultant (B.Tech Hons. metallurgy, IIT Kharagpur) based in Mumbai with over 43 years of experience in vacuum induction melting, vacuum arc melting,electron beam melting, plasma arc melting, inducto-slag melting, levitation melting, melting, melting under inert atmosphere and vacuum heat treatment.

11/19/  · For the sample with a carbon dosage of 13 pct, Na2CO3 dosage of 8 pct, reduction temperature of 1673 K (1400 °C), and 90 minutes holding time, high-titanium slag with a TiO2 grade of 81.63 pct and iron content of 4.53 pct was produced, with the TiO2 recovery rate of 93.43 pct and the yields of 55.37 pct. High-titanium slag can be used as a high-quality raw material to produce UGS for

Process description. The alloy to undergo VAR is formed into a cylinder typically by vacuum induction melting (VIM) or ladle refining (airmelt). This cylinder, referred to as an electrode is then put into a large cylindrical enclosed crucible and brought to a metallurgical vacuum (0.001–0.1 mmHg or 0.1–13.3 Pa).

In the 1980s, Ferrosilicon developed a slag-free induction melting process and pushed CCM to industrial production for the production of precision castings of titanium ingots and titanium. In recent years in some economically developed countries, the CCM method has begun to scale mechanized production scale, ingot maximum diameter of lm, length

Figure 5.6(a) shows a schematic of the ESR process and Fig. 5.7 shows an ESR facility. In the ESR process, an electrode is prepared by casting or forging after the conventional melting, refining and casting process. The melting of the electrodes occurs in the mould by heating caused by the electric resistance of the slag.

Having an inert gas cover over the slag enables enhanced compositional control of reactive elements, such as aluminum and titanium, during melting. The high-nitrogen compositions from the P-ESR process cannot be achieved through either conventional ESR or VAR melting techniques.

In BF smelting process, the interface behavior and interaction between different iron-bearing materials during softening and melting has a significant effect on the primary-slag formation behavior, thereby influencing the cohesive zone and gas permeability phenomenon. Wu et al. 27,28) found

Part of the production of the crude titania-rich slagisusedasfeedstockforthemanufactureoftitaniumdioxidepigmentby the sulphate process. The molten iron coproduced duringthe slagging pro- cess is either sold as pig iron or converted into steel or even atomized into iron or steel powders, respectively.

When it is heated, the titanium reaction with oxygen is so violent that it causes great challenges in the casting process. During this process, molten titanium reacts with even the smallest amount of trace oxygen present in most refractory compounds. Refractories are the materials typically used to produce investment casting molds.

9/10/  · Therefore, a novel smelting process of vanadium-bearing titanomagnetite is being developed, in which the technologies of vanadium extraction using chloride waste, direct reduction, melting and separation of slag–metal at elevated temperature for comprehensive recovery of vanadium, titanium and iron were used (Zheng et al., , Zheng et al

2/22/  · The DRTS process is able to achieve these savings because it by-passes very energy intensive processes currently in use, as outlined in Fig 1 below. The most unique part of DRTS is the direct reduction step using magnesium hydride to form titanium hydride from upgraded titanium slag

process greatly impacts the primary slag-forming of the materials. The burden softening temperature is signifi-cantly lower, and due to that the process of reduction impacts greatly the material primary slag-forming. Melting rich titanium slag from ilmenite concen-trates in the conditions of ore-thermal electric furnace is

In this research, ferrotitanium was produced from titania slag by an aluminothermic process in an Electro Slag Crucible Melting (ESCM) furnace. The effect of Al and flux additions on titanium

this refining process on titanium and titanium alloys with the goal of decreasing the level of oxygen because of its negative influence on the ductility. Main principle is the introduction of metallic cal-cium to the liquid slag as a deoxidant during the process. It could be shown that an oxygen decrease below 500 ppm is possible [5].

Titanium Slag Lting Process (In reality up to half the titanium in the slag is in trivalent form; the rest is mainly tetravalent). The typical process temperature controlled by the presence of a slag freeze lining and hence dependent on the slag melting point3 is in the range of 1600-1700C.

In this method, the titanium-containing slag was roasted by sodium or potassium hydroxide, and then washed with water in order to improve the grade of titanium-bearing mineral. The resulting product was then dissolved in acid, and through several additional processing steps, the titanium dioxide pigment was finally produced [6, 10, 18-22].

this system involves induction melting of titanium by the unique combination of a water-cooled, segmented crucible and a high purity calcium fluoride slag. Figure 13 shows a withdrawal type unit that was used in melting a variety of titanium and zirconium scrap. To date, the largest unit that has been successfully

ing phenomenon and the great difference of melting point between pig iron and slag. 3.2. Morphology Transition during the Softening-melt-ing Process In order to illustrate the softening-melting properties and slag evolution process of high-titanium slag, the experi-ments were interrupted at the characteristic temperatures.

2/1/2006 · The analysis of typical slag obtained by Electro Slag Crucible Melting process and other slag compositions reported by other investigators (Sahoo et al., 1999, Swinden and Jones, 1978) are given in Table 3. The chemical analysis suggests that the prepared slag would be suitable for the sulphate process of titanium dioxide pigment manufacture.

slag layer is expected to be well mixed, the slag temperature is expected to remain close to the melting point (liquidus temperature) of the slag. In addition, the slag composition remains close to M3O5 stoichiometry. As Figure 1 shows, the effect is that slag composition and temperature are strongly

Melting Process A consumable Titanium electrode melted by an arc into a water-cooled tiltable crucible. When the desired melt level is reached the electrode is automatically raised and the liquid titanium is poured into a mold. The consumable electrode can be dimensioned for multiple pours. VAR L150SM 04 VAR SKULL MELTER From Laboratory to

Titanium is the 4th most abundant metallic element in the earth’s crust. Titanium’s melting point is 1667°C. Titanium’s density is about one half that of steel, but that its mechanical properties are similar. There are no true titanium casting alloys; titanium castings are produced from wrought alloy formulations.

Dec 20, · This article discusses the melting of titanium by conventional vacuum arc consumable electrode methods and also by more advanced methods such as non-consumable, electron beam, plasma arc, electroslag, and induction slag methods. The procedures used to produce high quality ingots are presented and suggestions are offered on how melting defects and other problems may be avoided. A discussion on