CN105274360A - Novel technique for melting titanium or titanium alloy by reducing oxide through plasma carbon - Google Patents

Novel technique for melting titanium or titanium alloy by reducing oxide through plasma carbon Download PDF

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CN105274360A
CN105274360A CN201410290462.1A CN201410290462A CN105274360A CN 105274360 A CN105274360 A CN 105274360A CN 201410290462 A CN201410290462 A CN 201410290462A CN 105274360 A CN105274360 A CN 105274360A
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titanium
plasma
charcoal
furnace charge
ingot
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丁公权
丁小波
丁小军
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丁公权
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Abstract

The invention discloses a novel technique for melting titanium or titanium alloy by reducing an oxide through plasma carbon. The novel technique comprises the steps that industrial pure titanium dioxide powder or industrial pure titanium dioxide powder and alloy element oxide powder are used for preparing required carbon powder through a chemical equation according to a proportion; then an adhesive is added into the carbon powder to be evenly mixed, extrusion is conducted for forming, and drying is conducted, so that a furnace charge consumable electrode is formed; the furnace charge consumable electrode and a slag former are placed into a closed direct-current electric furnace and electrified, so that a plasma arc area at the temperature being over 5000 DEG C is formed at the bottom end of the electrode; the furnace charge consumable electrode is smelted into molten titanium or molten titanium alloy, and the molten titanium or molten titanium alloy falls into a potassium sodium or water-cooling copper crucible or a furnace hearth made of refractory materials; the molten titanium or molten titanium alloy is pumped into a closed ingot casting chamber continuously or at regular times through a siphon to be cooled into an ingot, and a segregation-free high-quality pure metallic titanium ingot or titanium alloy ingot not containing C or H2 or O2 or N2 is obtained. According to the novel technique, the production process is simple, the product quality is high, production cost is low, the environmental friendliness performance is good, and social benefits are remarkable.

Description

The novel process of titanium or titanium alloy is refined with plasma charcoal reduced oxide
Technical field
The invention belongs to plasma metallurgy technical field, be specifically related to the novel process of the oxide compound refining titaniums such as a kind of plasma charcoal reduction titanium dioxide or titanium alloy.
Background technology
Titanium and its alloys is high, lightweight, corrosion-resistant due to intensity, becomes the preferred material of space flight and aviation.The titanium supplied in the market or titanium alloy ingot all obtain by magnesium reduction titanium tetrachloride or by sodium reduction four titanium oxide, two kinds of methods all will through time a couple of days, the cavernous body titanium obtained after reduction through distillation, leaching or through spray argon purge to remove residual reactant in cavernous body.Then cavernous body is broken or grind to form small-particle, or in small-particle, add alloy element make consumable electrode, then dissolve through one or many and become titanium or titanium alloy ingot.Therefore, produce titanium or titanium alloy enterprise now, many workshops be built, comprising: reduction, distillation, leaching or Argon time are washed, crushing grinding, electrode manufacture etc.Operation is numerous and diverse, small scale, and energy consumption is high, and appropriation of labour power is many, pollute heavy, and reductive agent, magnesium sodium raw materials is expensive, so cause production cost high, can not satisfy social needs.If reductive agent can need not expensive sodium magnesium raw material, and adopts the simple large-scale production process of operation to replace, then manufacturing cost will reduce.
Summary of the invention
Technical problem to be solved by this invention is: solve above-mentioned prior art Problems existing, and provide a kind of plasma charcoal reduced oxide to refine the novel process of titanium or titanium alloy, numerous and diverse technique of change magnesium or sodium reduction four titanium oxide, titanium production technique is simplified, add that magnesium, sodium that need not be expensive makes reductive agent, and make reductive agent with charcoal, titanium production cost is reduced greatly.
The technical solution used in the present invention is:
The novel process of a kind of plasma charcoal reduced oxide refining titanium or titanium alloy, with industrial pure titinium dioxide powder or technical pure titanium dioxide powder and alloying element oxide powder, proportioning presses powdered carbon needed for chemical equation, add caking agent mixing extrusion molding again to dry, become furnace charge consumable electrode, load together with slag former in closed direct current furnace and be energized, electrode bottom produces more than 5000 DEG C plasma arc districts, furnace charge consumbuble-electrode melting is smelt titanium or titanium alloy liquid to be fallen in potassium sodium or water jacketed copper crucible or in refractory materials cupola well, close ingot casting room by the continuous or periodic automatic suction of siphon pipe and be cooled to ingot, obtain segregation-free, without C, H 2, O 2, N 2high-quality pure metal titanium ingot or titanium alloy ingot.
The plasma generator that tradition is complicated is located in the outer high-temperature resistant shell of stove, with the direct current arc district of carrier gas by high-energy-density, becomes the hot carrier gas of plasma and sprays in stove for melting.The present invention, directly with producing 5000 DEG C in easy stove between furnace charge consumable electrode bottom and furnace bottom with upper plasma carbon arc district, for oxide compounds such as charcoal reduction titanium dioxide, is reduced into titanium or titanium alloy, this economy, practical, is easy to promote.
The plasma charcoal that furnace charge consumable electrode of the present invention produces, also can be applied in refractory metal or metal oxide from now on, comprise Cr, Ti, Er, W, Mo, Ta, Nb, Si, B ... Deng oxide compound, be reduced into pure metal or alloy.
In technique scheme, the reduction of described plasma charcoal comprises: plasma charcoal reduction titanium dioxide becomes metal oxides needed for titanium alloy of pure metallic titanium or plasma charcoal reduction titanium dioxide and refining or non-metallic element oxide compound, is smelt various required titanium alloy.
In technique scheme, the industrial pure titinium dioxide powder of described use or technical pure titanium dioxide powder and alloying element oxide powder, by powdered carbon needed for chemical equation proportioning, adding additives mixing extrusion molding again, refer to and be squeezed into circle, rectangle or hollow circle etc., being used as furnace charge consumable electrode loads in the potassium sodium or water jacketed copper crucible mould that above-mentioned shape adapts, and energising is smelted into above-mentioned shape titanium ingot or titanium alloy ingot and energy-conservation.
In technique scheme, described furnace charge consumable electrode has two kinds of methods reducing its internal resistance thermosteresis:
1. by electrode jaw folder hollow graphite electrode power transmission, the furnace charge consumable electrode that in hollow graphite electrode, extruding charcoal is in shortage, make total charcoal amount in Graphite Electrodes and any transverse section of furnace charge consumable electrode, the oxide compound furnace charge that meets that can not be superfluous is reduced into titanium or titanium alloy liquid;
2. mix furnace charge to be squeezed in titanium or titanium alloy refractory metal plates net post, post two ends loading nut or screw rod become furnace charge consumable electrode extensible, and positive wire is connected on electrode tip, and screw rod clamper is for power transmission.
In technique scheme, described plasma charcoal reduced oxide refining titanium is in closed potassium sodium or water jacketed copper crucible, inserts a furnace charge consumable electrode, by chemical equation: TiO 2+ 2C=Ti+2CO(1)
Allotment of labor's industry pure titinium dioxide powder, powdered carbon add in crucible and on sidewall of crucible, the slag former composition of aequum is: 48%CaO, 48%AI 2o 3, 4%TiO 2adding additives mixing is squeezed into furnace charge consumable electrode, energising rear electrode bottom produces more than 5000 DEG C high-temperature zones, in electrode, charcoal is also gasificated into two electrodes charcoal steam, suspend and become plasma carbon arc district between the anode and the cathode, and oxide compound furnace charge is also dissociated into positively charged metal vapors by high energy direct current or nonmetal steam collects to furnace bottom.Electronegative oxygen is met charcoal and is become CO to discharge out of the furnace, the H in furnace charge 2, O 2, N 2also become large by heat volumetric expansion, produce huge buoyancy and discharge out of the furnace, because containing TiO in slag 2, prevent TiC from generating under high temperature, so can obtain without deviation, without C, H 2, O 2, N 2pure metallic titanium ingot.
In technique scheme, described is by chemical equation with plasma charcoal reduced oxide refining ferro-titanium
2TiO 2+Fe 2O 3+7C=2FeTi+7CO(3)
Be squeezed into furnace charge consumable electrode dry with industrial pure titinium dioxide powder, ferric oxide powder, the mixing of powdered carbon adding additives, insert closed refractory materials cupola well, then with slag former 48%CaO, 48%AI 2o 3, 4%Fe 2o 3logical direct current is smelted, and produces low-melting ferro-titanium liquid, falls in the cupola well of refractory materials lay, by cupola well downside wall siphon pipe Automatic continuous or the other closed ingot casting room of regular suction stove, is cooled to without C, H 2, O 2, N 2high-quality ferro-titanium ingot, and to produce by large-scale low-cost continuously.
In technique scheme, described refines titanium aluminum alloy with plasma charcoal reduced oxide, such as, refine the advanced material of aircraft engine application, 31.17%Al, 61.57%Ti, 0.38%Si, 6.75%W, its chemical equation:
Al 2O 3+3C=2AI+3CO(3)
TiO 2+2C=Ti+2CO(1)
SiO 2+2C=Si+2CO(4)
2/3WO 3+2C=2/3W+2CO(5)
Join aluminium oxide powder, titanium dioxide powder, silicon dioxide powder, anhydrous wolframic acid powder, powdered carbon, add in crucible and slag former aequum 48%CaO, 48%Al on sidewall of crucible 2o 3, 4%TiO 2the furnace charge consumable electrode that the mixing of powder adding additives is squeezed into desired shape is dried, and loads and adapts in the water jacketed copper crucible of shape, and energising melting can obtain without deviation, without C, H 2, O 2, N 2high-quality titanium aluminum alloy ingot.
The titanium alloy of the corrosion resistant different chemical composition of light-high-strength needed for other aerospace, ships vehicle, also can adopt above-mentioned similar devices and method melting.
Advantage and effect:
1, production technique is simple: only need a simple plasma electric stove from furnace charge to being smelt titanium ingot, just can replace conventional art magnesium or sodium reduction four titanium oxide stove, one-level distillation, leaching or spray argon purge, fragmentation, grinding small-particle electrode, one or many are smelted into the method for titanium ingot.
2, quality product is high, H in titanium ingot 2, O 2, N 2all low than existing titanium ingot.
3, production cost is minimum, and because equipment simple production cycle is short, scale is large, and manpower consumption is few, and cheap charcoal replaces expensive titanium or sodium, and energy consumption is low, becomes to produce cost and falls greatly.
4, environmental protection is good, only uses a closed electric furnace, and smoke evacuation easily processes, and meets environmental requirement, without other source of pollution.
5, social benefit is large, after light anticorrosive high strength titanium valency falls greatly, can be aviation, ships, vehicle loss of weight and save fuel oil consumption, reduce global pollution source.
Principle of work:
By physical chemistry knowledge, plasma is in fact allow gas have very high-energy and ionization, therefore can conduct electricity, all gas can become thermal plasma when being heated to 5000 DEG C-30000 DEG C with direct current under a normal atmosphere and conduct electricity, and utilizes the plasma hot-gas welding metal widespread use of this high-energy-density.Plasma iron smelting method was just tested decades ago by Sweden; many scholars also inquire into plasma hot smelting refractory metal and active metal; but all plasma generator is contained in outside stove; high temperature material is needed to make shell protection plasma generator; material difficulty is caused to ask; facility investment is many, and energy loss is large, does not have economical and practical value and stops production.The present invention cancels Traditional Thinking, and pioneering plasma generator is in cupola well consumable electrode bottom, and make equipment simple, heat makes full use of.Compared with prior art, production technique of the present invention is simple, and quality product is the highest, and production cost is minimum, and environment protection is good.
Accompanying drawing explanation
Fig. 1 is oxide compound refining titanium or the refining titanium aluminum alloy electric furnace production principle schematic diagram such as plasma charcoal of the present invention reduction titanium dioxide;
Fig. 2 is that plasma charcoal of the present invention reduction titanium dioxide and ferric oxide refine ferro-titanium electric furnace schematic diagram continuously;
Fig. 3 is the furnace charge consumable electrode longitudinal section schematic diagram of metal sheet net post of the present invention conduction.
Description of reference numerals:
1-furnace charge consumable electrode, 2-hollow graphite electrode, 3-chimney, 4-bell, 5-insulation layer, 6-slag, 7-molten metal, 8-slag crust, 9-solid ingot, 10-potassium sodium or water jacketed copper crucible, 11-anode base plate, 12-water-in, 13-water outlet, 14-transformer, 15-Clamp for connecting cables, 16-furnace charge consumable electrode, 17-refractory materials, 18-ingot casting room, 19-siphon pipe, 20-ingot casting chamber cap, 21-ingot mould, 22-mold base plate turning axle, 23-water-cooled copper conductive ring furnace wall, 24-expanded metal capital screw rod, 25-metal sheet net post, nut at the bottom of 26-metal sheet net post, 27-air pressure regulator, 28-electrode jaw.
Embodiment
The novel process of a kind of plasma charcoal reduced oxide refining titanium or titanium alloy, with industrial pure titinium dioxide powder or technical pure titanium dioxide powder and alloying element oxide powder, proportioning presses powdered carbon needed for chemical equation, add caking agent mixing extrusion molding again to dry, become furnace charge consumable electrode, load together with slag former in closed direct current furnace and be energized, electrode bottom produces more than 5000 DEG C plasma arc districts, furnace charge consumbuble-electrode melting is smelt titanium or titanium alloy liquid to be fallen in potassium sodium or water jacketed copper crucible or in refractory materials cupola well, close ingot casting room by the continuous or periodic automatic suction of siphon pipe and be cooled to ingot, obtain segregation-free, without C, H 2, O 2, N 2high-quality pure metal titanium ingot or titanium alloy ingot.
The plasma generator that tradition is complicated is located in the outer high-temperature resistant shell of stove, with the direct current arc district of carrier gas by high-energy-density, becomes the hot carrier gas of plasma and sprays in stove for melting.The present invention, directly with producing 5000 DEG C in easy stove between furnace charge consumable electrode bottom and furnace bottom with upper plasma carbon arc district, for oxide compounds such as charcoal reduction titanium dioxide, is reduced into titanium or titanium alloy.Economy, practical, be easy to promote.
The plasma charcoal that furnace charge consumable electrode of the present invention produces, also can be applied in refractory metal or metal oxide from now on, comprise Cr, Ti, Er, W, Mo, Ta, Nb, Si, B ... Deng oxide compound, be reduced into pure metal or alloy.
The reduction of above-mentioned plasma charcoal comprises: plasma charcoal reduction titanium dioxide becomes metal oxides needed for titanium alloy of pure metallic titanium or plasma charcoal reduction titanium dioxide and refining or non-metallic element oxide compound, is smelt various required titanium alloy.
The industrial pure titinium dioxide powder of above-mentioned use or technical pure titanium dioxide powder and alloying element oxide powder, by powdered carbon needed for chemical equation proportioning, adding additives mixing extrusion molding again, refer to and be squeezed into circle, rectangle or hollow circle etc., being used as furnace charge consumable electrode loads in the potassium sodium or water jacketed copper crucible mould that above-mentioned shape adapts, and energising is smelted into above-mentioned shape titanium ingot or titanium alloy ingot and energy-conservation.
Above-mentioned furnace charge consumable electrode has two kinds of methods reducing its internal resistance thermosteresis:
1. by electrode jaw folder hollow graphite electrode power transmission, the furnace charge consumable electrode that in hollow graphite electrode, extruding charcoal is in shortage, make total charcoal amount in Graphite Electrodes and any transverse section of furnace charge consumable electrode, the oxide compound furnace charge that meets that can not be superfluous is reduced into titanium or titanium alloy liquid;
2. mix furnace charge to be squeezed in titanium or titanium alloy refractory metal plates net post, post two ends loading nut or screw rod become furnace charge consumable electrode extensible, and positive wire is connected on electrode tip, and screw rod clamper is for power transmission.
Above-mentioned plasma charcoal reduced oxide refining titanium is in closed potassium sodium or water jacketed copper crucible, inserts a furnace charge consumable electrode, by chemical equation:
TiO 2+2C=Ti+2CO(1)
Allotment of labor's industry pure titinium dioxide powder, powdered carbon add in crucible and on sidewall of crucible, the slag former composition of aequum is: 48%CaO, 48%AI 2o 3, 4%TiO 2adding additives mixing is squeezed into furnace charge consumable electrode, energising rear electrode bottom produces more than 5000 DEG C high-temperature zones, in electrode, charcoal is also gasificated into two electrodes charcoal steam, suspend and become plasma carbon arc district between the anode and the cathode, and oxide compound furnace charge is also dissociated into positively charged metal vapors by high energy direct current or nonmetal steam collects to furnace bottom.Electronegative oxygen is met charcoal and is become CO to discharge out of the furnace, the H in furnace charge 2, O 2, N 2also become large by heat volumetric expansion, produce huge buoyancy and discharge out of the furnace, because containing TiO in slag 2, prevent TiC from generating under high temperature, so can obtain without deviation, without C, H 2, O 2, N 2pure metallic titanium ingot.
Above-mentioned plasma charcoal reduced oxide refining ferro-titanium is chemical equation
2TiO 2+Fe 2O 3+7C=2FeTi+7CO(3)
Be squeezed into furnace charge consumable electrode dry with industrial pure titinium dioxide powder, ferric oxide powder, the mixing of powdered carbon adding additives, insert closed refractory materials cupola well, then with slag former 48%CaO, 48%AI 2o 3, 4%Fe 2o3 leads to direct current and smelts, and produces low-melting ferro-titanium liquid, falls in the cupola well of refractory materials lay, by cupola well downside wall siphon pipe energy Automatic continuous or the other closed ingot casting room of regular suction stove, is cooled to without C, H 2, O 2, N 2high-quality ferro-titanium ingot, and to produce by large-scale low-cost continuously.
Above-mentioned plasma charcoal reduced oxide refining titanium aluminum alloy, such as, refine the advanced material of aircraft engine application, 31.17%Al, 61.57%Ti, 0.38%Si, 6.75%W, its chemical equation:
Al 2O 3+3C=2A+3CO(3)
TiO 2+2C=Ti+2CO(1)
SiO 2+2C=Si+2CO(4)
2/3WO 3+2C=2/3W+2CO(5)
Join aluminium oxide powder, titanium dioxide powder, silicon dioxide powder, anhydrous wolframic acid powder, powdered carbon, add in crucible and slag former aequum 48%CaO, 48%Al on sidewall of crucible 2o 3, 4%TiO 2the furnace charge consumable electrode that the mixing of powder adding additives is squeezed into desired shape is dried, and loads and adapts in the water jacketed copper crucible of shape, and energising melting can obtain without deviation, without C, H 2, O 2, N 2high-quality titanium aluminum alloy ingot.
The titanium alloy of the corrosion resistant different chemical composition of light-high-strength needed for other aerospace, ships vehicle, also can adopt above-mentioned similar devices and method melting.
See Fig. 1, the present invention adopts the similar devices of low shaft closed electric furnace of the consumable electrode furnace of existing smelting titanium ingot or steel-making electroslag remelting furnace, ironmaking alloy, carries out oxide compound refining titanium and the titanium aluminum alloies such as plasma charcoal reduction titanium dioxide.Furnace charge consumable electrode 1 in Fig. 1 is squeezed in hollow graphite electrode 2 for furnace charge, and both synthesize a furnace charge consumable electrode, is contained in bell 4 central authorities, covers and chimney 3 is housed.Ring flange 5 is had bottom bell, be connected with potassium sodium or water jacketed copper crucible 10 upper flange dish 5, upper lower flange therebetween has insulation layer, metal smelting titanium is because furnace temperature is high, need potassium sodium cooling copper crucible 10, refining titanium aluminum alloy furnace temperature is low adopts water jacketed copper crucible, when energising is produced, electrode bottom produces 5000 DEG C with upper plasma carbon arc district, the oxide compounds such as titanium dioxide are all reduced into metal titanium, metal pat 7 is fallen into through slag 6, slag is also cooled to slag crust 8 on copper mould wall, crucible bottom metal cools becomes solid ingot 9, the anode base plate 11 of copper crucible is communicated with transformer 14 negative electrode, copper crucible and base plate interior have potassium sodium or cooling water intake 12 and water port 13.
See Fig. 2, Fig. 3, make steel or ferrotianium needed for cast iron, the high temperature resistant refractory materials 17 lay body of heater that available existing ferroalloy works are used, bell 4 central authorities fill a metal sheet net post furnace charge consumable electrode 16, there are a metal sheet net post 25 in electrode central authorities, expanded metals capital has a screw rod 24, a nut 26 is had at the bottom of post, both can supply furnace charge consumable electrode spreading, post inner prop is all extruded with mixing furnace charge 1 outward, become the furnace charge consumable electrode of metal sheet net post, expanded metal capital screw rod 24 electric wire connects the anode that folder 15 is communicated with transformer 14, the negative electrode of transformer 14 is communicated with the water-cooled copper conductive ring furnace wall 23 of metal bath surface, after energising, anode bottom produces more than 5000 DEG C plasma arc districts, furnace charge comsumable melt reduction produces CO gas etc., discharge from chimney 3, slag 6 enters cupola well, ferro-titanium molten metal 7 is from the ingot mould 21 in the closed ingot casting room 18 of the continuous or periodic automatic inflow of siphon pipe 19, after being cooled to solid ingot, open air pressure regulator 27 on siphon pipe top, after making ingot casting room air pressure keep normal atmosphere (An), open ingot casting chamber cap 20, with crane, cold ingot is in batch hung out ingot casting room, refining ferrotianium stove is made can not stop continuously to produce like this.

Claims (7)

1. one kind is refined the novel process of titanium or titanium alloy with plasma charcoal reduced oxide, it is characterized in that, with industrial pure titinium dioxide powder or technical pure titanium dioxide powder and alloying element oxide powder, proportioning presses powdered carbon needed for chemical equation, add caking agent mixing extrusion molding again to dry, become furnace charge consumable electrode, load together with slag former in closed direct current furnace and be energized, electrode bottom produces more than 5000 DEG C plasma arc districts, furnace charge consumbuble-electrode melting is smelt titanium or titanium alloy liquid to be fallen in potassium sodium or water jacketed copper crucible or in refractory materials cupola well, close ingot casting room by the continuous or periodic automatic suction of siphon pipe and be cooled to ingot, obtain segregation-free, without C, H 2, O 2, N 2high-quality pure metal titanium ingot or titanium alloy ingot.
2. the novel process of plasma charcoal reduced oxide refining titanium according to claim 1 or titanium alloy, it is characterized in that, the reduction of described plasma charcoal comprises: plasma charcoal reduction titanium dioxide becomes metal oxides needed for titanium alloy of pure metallic titanium or plasma charcoal reduction titanium dioxide and refining or non-metallic element oxide compound, is smelt various required titanium alloy.
3. the novel process of plasma charcoal reduced oxide refining titanium according to claim 1 or titanium alloy, it is characterized in that, the industrial pure titinium dioxide powder of described use or technical pure titanium dioxide powder and alloying element oxide powder, by powdered carbon needed for chemical equation proportioning, adding additives mixing extrusion molding again, refer to and be squeezed into circle, rectangle or hollow circle etc., being used as furnace charge consumable electrode loads in the potassium sodium or water jacketed copper crucible mould that above-mentioned shape adapts, and energising is smelted into above-mentioned shape titanium ingot or titanium alloy ingot and energy-conservation.
4. the novel process of plasma charcoal reduced oxide refining titanium according to claim 1 or titanium alloy, is characterized in that, described furnace charge consumable electrode has two kinds of methods reducing its internal resistance thermosteresis:
1. by electrode jaw folder hollow graphite electrode power transmission, the furnace charge consumable electrode that in hollow graphite electrode, extruding charcoal is in shortage, make total charcoal amount in Graphite Electrodes and any transverse section of furnace charge consumable electrode, the oxide compound furnace charge that meets that can not be superfluous is reduced into titanium or titanium alloy liquid;
2. mix furnace charge to be squeezed in titanium or titanium alloy refractory metal plates net post, post two ends loading nut or screw rod become furnace charge consumable electrode extensible, and positive wire is connected on electrode tip, and screw rod clamper is for power transmission.
5. the novel process of plasma charcoal reduced oxide refining titanium according to claim 1 or titanium alloy, is characterized in that, described plasma charcoal reduced oxide refining titanium is in closed potassium sodium or water jacketed copper crucible, inserts a furnace charge consumable electrode,
By chemical equation: TiO 2+ 2C=Ti+2CO(1)
Allotment of labor's industry pure titinium dioxide powder, powdered carbon add in crucible and on sidewall of crucible, the slag former composition of aequum is: 48%CaO, 48%AI 2o 3, 4%TiO 2adding additives mixing is squeezed into furnace charge consumable electrode, energising rear electrode bottom produces more than 5000 DEG C high-temperature zones, in electrode, charcoal is also gasificated into two electrodes charcoal steam, suspend and become plasma carbon arc district between the anode and the cathode, and oxide compound furnace charge is also dissociated into positively charged metal vapors by high energy direct current or nonmetal steam collects to furnace bottom; Electronegative oxygen is met charcoal and is become CO to discharge out of the furnace, the H in furnace charge 2, O 2, N 2also become large by heat volumetric expansion, produce huge buoyancy and discharge out of the furnace, because containing TiO in slag 2, prevent TiC from generating under high temperature, so can obtain without deviation, without C, H 2, O 2, N 2pure metallic titanium ingot.
6. refine the novel process of titanium or titanium alloy according to plasma charcoal reduced oxide according to claim 1, it is characterized in that, described refines ferro-titanium, its chemical equation with plasma charcoal reduced oxide
2TiO 2+Fe 2O 3+7C=2FeTi+7CO(3)
Be squeezed into furnace charge consumable electrode dry with industrial pure titinium dioxide powder, ferric oxide powder, the mixing of powdered carbon adding additives, insert closed refractory materials cupola well, then with slag former 48%CaO, 48%AI 2o 3, 4%Fe 2o 3logical direct current is smelted, and produces low-melting ferro-titanium liquid, falls in the cupola well of refractory materials lay, by cupola well downside wall siphon pipe Automatic continuous or the other closed ingot casting room of regular suction stove, is cooled to without C, H 2, O 2, N 2high-quality ferro-titanium ingot.
7. the novel process of plasma reduction oxide compound refining titanium according to claim 1 or titanium alloy, is characterized in that, described refines titanium aluminum alloy, its chemical equation with plasma charcoal reduced oxide:
Al 2O 3+3C=2AI+3CO(3)
TiO 2+2C=Ti+2CO(1)
SiO 2+2C=Si+2CO(4)
2/3WO 3+2C=2/3W+2CO(5)
Join aluminium oxide powder, titanium dioxide powder, silicon dioxide powder, anhydrous wolframic acid powder, powdered carbon, add in crucible and slag former aequum 48%CaO, 48%Al on sidewall of crucible 2o 3, 4%TiO 2the furnace charge consumable electrode that the mixing of powder adding additives is squeezed into desired shape is dried, and loads and adapts in the water jacketed copper crucible of shape, and energising melting can obtain without deviation, without C, H 2, O 2, N 2high-quality titanium aluminum alloy ingot.
CN201410290462.1A 2014-06-26 2014-06-26 Novel technique for melting titanium or titanium alloy by reducing oxide through plasma carbon Pending CN105274360A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105779791A (en) * 2016-05-12 2016-07-20 王进民 Device and method for improving production efficiency of titanium sponge and reducing energy consumption
CN108525651A (en) * 2018-03-21 2018-09-14 广州大学 A kind of reduction titanium dioxide process with highlight catalytic active
CN109047687A (en) * 2018-10-18 2018-12-21 东北大学 A kind of dual alloy synchronizes the device and method of the large-scale uniformly ingot casting of remelting preparation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105779791A (en) * 2016-05-12 2016-07-20 王进民 Device and method for improving production efficiency of titanium sponge and reducing energy consumption
CN108525651A (en) * 2018-03-21 2018-09-14 广州大学 A kind of reduction titanium dioxide process with highlight catalytic active
CN108525651B (en) * 2018-03-21 2020-06-05 广州大学 Preparation method of reduced titanium dioxide with high photocatalytic activity
CN109047687A (en) * 2018-10-18 2018-12-21 东北大学 A kind of dual alloy synchronizes the device and method of the large-scale uniformly ingot casting of remelting preparation

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Application publication date: 20160127