SU720027A1 - Titano-alumina semi-product - Google Patents

Description

The invention relates to the ferroalloy industry, in particular to the joint venture. to local obtained ferrotitanium and titanic semi-intermediate. A dump donkey is known for the production of ferrotitanium c. having the following composition, wt.%: 11.7-13.3 StOa. up to 0.5, CaO 1O-14, MgO 3-4, FeO 0.8-2.0,. Slag is not used as an intermediate in the manufacture of titanium-containing electrocorundum, since it contains an increased amount of calcium oxide. Known slaughter aluminothermic reduction of ilmenite 2, containing, wt.% :: And 0z38,15-64,21; TtO 24.12-26.90; CaO 6.42-9.38; FeO 1.42-2.40; 5L 0 O, 61-0.7; MgO 3.04, 01; MpO - traces. This slag is not used for the doping of tigane-containing electrocorundum due to the increased content of calcium oxide. Calcium oxide in electrons corundum more than 0, 3% significantly reduces their technical and eco-indicators - in particular, abrasive ability. In order not to additionally introduce impurities (CaO, etc.), in melting the electric round area, technically clean, expensive and inexpensive charge materials are used. In particular, for the doping of electrocorundums of oxide and titanium, Pentar titanium dioxide is used, which contains up to 99% T.O. Titanium dioxide is mainly used for the manufacture of white oxide. The proposed titanium-and-sludge semi-product is obtained by aluminothermic melting together with ferrotitanium from ilmenite concentrates containing j wt.%: TlOj 50-62; Cr Oj, 0, O1-O, 1, Si-O. 2, O-3, O; CaO 0.15-0.5; F. 15-30, FeO 1O-20. The high content of iron oxides in the concentrate does not allow them to be directly used in the smelting of tptane-containing electrocorundum. Therefore, the technological process Px of ferrotitanium isoode is carried out raKicvi in order that the oxides of iron, cracking chromium and partially titanium concentrate .. restore amoN-uraifeM to metal, and the x-rayed alloy {titanium-alumina semi-finished product) Ш1: their electrocorundum. The circuit of the invention is the use of titanium-containing semi-finished product in the smelting of TT-electrostatic fuels and the increase of its operational properties. The goal is achieved by the fact that the components of the tita-googlynous peptide intermediate product are taken in the following ratio, wt.%: TiO. 18-40; 1LDOO, 44; Cao 0.2-3; Stb 0.1-2; FeO OD 3j - the rest. . The titanoglumessy semi-pro duct: st is a fused dispersion: aE by y70%, consisting of corundum {ct-A-fj Oj), together with corundum, TtO and Tt O are observed (approximately, in ratios). The smallest (5 µm) particles or Tt or TtC are formed. Corundum in aluminum is produced by trivalent titanium in bluish color. The bulk weight of titanoglonexemisomes 1x1gr. Bricks, that is 1.83 r / cKf H, the strength of the grain no. 4O is It69 g / grain

Components

Non la.Bok

The known method is relative mechanical strength of 49.9%. GT p i m e r. The smelting of titanium-occult intermediate is produced on an electric arc furnace with a transformer power of 70 kW. To ensure the intensity of the reduction processes, the charge materials took the size of particles of no more than 2 mm. IlmeH1-GGY concentrate was taken as a titanium-containing raw material, and the aluminum perbium reducing agent was used, which does not exclude the use of other grades of aluminum. To dilute the metal to the required composition and more fully reduce titanium from oxides, iron ore and ferrosilicon are introduced into the mixture. For one metallurgical ;; .- de fi rth, two chaevar products — ferrotitanium and titsyulynosis & myst intermediate — were obtained. Titanium of ilmenite concentrate is redistributed between these products almost completely. Such a process for the production of ferrotitanium and titto-aluminous t-product allows for the integrated use of the country's raw material resources. The joint of the titanium-aluminous semi-product obtained by the south as a result of thermal melts in comparison with the known ones is given in the table.

From tableto it follows that a mop & s tongue of titanium-alumina half-product contains a low content of eperyibix of the basics of electrocorundums {CaO, NlfsG, Si. ) with significant titanium dioxide content. The intermediate product is used for the doping of electrocorundum oxidasel and tpt-ana.

Under laboratory conditions, power of 1OO kW produced chromatite 24, 12-26.90 3.0-4.01 58.15-64.21

Claims (2)

Tbi-i electrostatus Using a titanogram of the ground-floor product, Vylaelenpky chrom.titanium electrocopyiia is a group of crystalline materials: with nojicBoi. m / zhrostruktut op. Concomitant toshchif fa.zg {No. ,, 0-iiftt O; CoO pc) 1chТ |, 0 „. ) Bvme large-scale ch. Titanium compounds and natural compounds of 1%, non-oxygen - not seen, Chromgatan e.1ekrokundi imyot .iH40t 572 cue composition, wt.%: BOgOD; CaO OD5; MgpO, 31; 4tiOi97.23; , O, O8; .Eb; , The relative mechanical strength of the melted chromate-titanium electrocorundum is 88.5%, the bulk mass of grain No. 40 is 2 g / cm, the grinding capacity is 0.0612, i.e., the melted titanium-containing corundum based on the tritanous semi-finished product is not inferior in its properties to electrocorunum obtained by jipH using pigment dioxide, titanium. With the same absorption of titanium dioxide by the electrocorundum from the charge, the difference in the price of 1 kg of titanium dioxide is 0.5 rubles, which gives a significant economic effect. This addresses the issue of a base for corundums containing titanium oxides. The Invention Formulation of titanium-alumina, including titanium dioxide, magnesium oxide, calcium oxide, silicon dioxide, iron oxide, and aluminum oxide, due to the fact that, in order to use it in smelting titanium electrocorundum and improve their operational properties, it contains ratio, wt.%: Titanium dioxide18, O-4O, O Magnesium oxide 0.4-4.0 Calcium oxide 0.2-3.0 Silicon dioxide 0.1-2.0 Iron oxide 0.1-3.0 Oxide aluminum Sources of information taken into account in the examination of 1.Ryss MA Production of ferroalloys, M.,. Metallurgists, 1977, p. 264. 2. Durrer R., Volkert G., Metallurgists of ferroalloys, M, Metallurgists, 1976, p. 407.