CN103882247A - Magnesium smelting technique by microwave heating - Google Patents
Magnesium smelting technique by microwave heating Download PDFInfo
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- CN103882247A CN103882247A CN201410140973.5A CN201410140973A CN103882247A CN 103882247 A CN103882247 A CN 103882247A CN 201410140973 A CN201410140973 A CN 201410140973A CN 103882247 A CN103882247 A CN 103882247A
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Abstract
The invention discloses a magnesium smelting technique by microwave heating and relates to the field of magnesium smelting techniques. The upper end of the round wall of a furnace body is connected with an expander by bricklaying through a refractory material, and the lower end of the round wall of the furnace body is fixed with a tray; the expander is movably connected with a support in a sliding manner; the lower end of a microporous ceramic tube is fixed with the tray while the upper end of the microporous ceramic tube is fixed with the support; the furnace body is fixed with a microwave generator and a shell; the shell is fixed with an upper flange and a lower flange; a gaseous magnesium collecting chamber is formed by the wall of the furnace body above the support, an upper convergent section of the shell and the inner side of the upper flange; a gaseous magnesium outlet tube is penetrated from the gaseous magnesium collecting chamber and then is fixed with the furnace body and the shell; a slag chamber is formed by the wall of the furnace body below the tray, a lower convergent section of the shell and the inner side of the lower flange; a magnesium ball is put in the microporous ceramic tube; slag is put in the slag chamber; the power of the microwave generator is 1-500KW, the frequency of the microwave generator is 300-3000MHz, the temperature of the microwave generator is 1200-1350 DEG C, and the smelting time is 15-60 minutes; the magnesium ball is acquired by roasting dolomite to acquire magnesium oxide and calcium oxide and then mixing silicon iron and fluorite with magnesium oxide and calcium oxide. The magnesium smelting technique by microwave heating is used for smelting magnesium, which is a microwave new energy heating technology.
Description
Technical field
Microwave heating refining magnesium technology of the present invention, relates to metallurgical technology field; Be particularly related to refining magnesium technical field; Relate in particular to the technical field of microwave heating Mg-smelting furnace and technology control.
Background technology
In practical metallic substance, magnesium and alloy density thereof are low, are described as the super light material of 21 century.Ceramic reinforcement is added to magnesium, can significantly improve Young's modulus, intensity, wear-resisting and resistance to elevated temperatures, density and the specific rigidity of Geng Gao and good damping and amortization that magnesium is lower than having with other metallographic phase, in Aeronautics and Astronautics industry, apply with keen interest, in current national defence and high-tech sector, wish especially the material adopting most, it is application prospect widely, is just presenting situation in the ascendant.The Application Areas of magnesium also has metallurgy, chemistry, electricity, sacrificial anode, fireworks, 3C Product etc.Reduce in the strategy and way process of freight department's quantity discharged in searching, light-weight design is the better solution that automobile, train or aircraft are raised the efficiency.Magnesium alleviates 55% than steel, alleviates 25% compared with aluminium, and some parts, compared with aluminium, alleviates 47% weight.The weight of material can be effectively reduced by magnesium, the object of fuel saving and minimizing discharge amount of exhaust gas can be realized.MAGNESIUM METAL LCA (Life cycle analysis) development of projects that wherein German Aviation Center (DLR) is done shows that---magnesium is as a kind of light material---provides considerable potentiality for the application of various weight sensitive.For this reason, countries in the world are very paid attention to the production of magnesium and research.
According to the difference of magnesium ore resources and kind, the production method of magnesium can be divided into two large class, i.e. chlorination fused salt electrolysis process and hot reducing methods.Electrolytic process: chlorination fused salt electrolysis process comprises production and the large process of electrolysis smelting magnesium two of magnesium chloride; This method is divided into again the Magnesium Chloride Anhydrous electrolytic process taking magnesite as raw material and the electrolytic process taking seawater as waste magnesium chloride.The latter's difficult point is how to remove MgCl6H
2the crystal water of O.Produce MgCl3/2H
2o, but this production thing heats facile hydrolysis reaction in air, generates the impurity that is unfavorable for electrolysis, as Mg (OH)
2.Owing to producing chlorine in electrolytic process generative process, contaminate environment, current consumption is large, cost is high, and the whole world stops production substantially now.Hot reducing method: according to the difference of reductive agent, hot reducing method can be divided into silicothermic process, thermite process, carbothermy.Silicothermic process has formed three kinds of techniques according to equipment, energy condition---and Pi Jiang (Pia-geon) external heating, bohr are pricked the electric synthesis by internal resistance electric melting of promise (Bolzano) and mug(unit of measure) nit (Magnethem) magnetherm process.
A kind of silicon reduction process for smelting magnesium of Canada scientist Pi Jiang (LMPiageon) professor invention, be called Piageon technique, its reduction reaction is: 2 (CaOMgO) (s)+Si (Fe) (s)=2Mg (g)+2CaOSiO
2(s)+Fe (Si) (s); This technique is by dolomite calcination, and ferrosilicon is made reductive agent, and fluorite is made catalyzer, and grinding is made magnesium ball, packs reduction tank into, is warmed to 1200 DEG C, within 8-12 hour, produces magnesium 20-24kg.China adopts skin river (Pia-geon) method at present, accounts for 80% of world's magnesium output.76.97 ten thousand tons of Chinese former magnesium output in 2013,29.78 ten thousand tons, magnesium alloy, 13.29 ten thousand tons of magnesium grains (powder).
Common deficiency, defect and the drawback existing of above-mentioned process for smelting magnesium is: power consumption is high, energy consumption is large, structure deteriorate is fast, product purity is low, production capacity is little, reduction cycle is long, labour intensity is large, cannot realize large suitability for industrialized production, and level of automation is low etc.; Particularly skin river (Pia-geon) method process for smelting magnesium environmental pollution and serious.
In recent years, microwave heating technique develops rapidly, has been widely used in dry, heating and the powder calcining of various materials.Microwave is the hertzian wave of a kind of frequency at 300～3000MHz, be that wavelength is the hertzian wave of 100cm-1mm, microwave heating is by producing microcosmic electric current at material internal, causes the electrical waste of energy direct heating material of material internal, and it does not need thermal conduction from outward appearance to inner essence.Therefore, microwave heating does not need the heat transfer process as the heating of traditional fuel type or resistance-type heat.The energy being produced by microwave generator can directly be absorbed by material and realize entirety and evenly heat up.Microwave has selectivity and adds thermal material, temperature rise rate is fast, heating efficiency is high outstanding feature and advantage, and has the temperature of reaction of reduction, Reaction time shorten, the energy-saving and cost-reducing advantage such as obvious.Therefore, development theories research, carries out advanced person, efficiently microwave calcination novel process research is significant.But, it should be noted that: at present, also do not occur for the systematic study of microwave calcination and large-scale smelting equipment and the control techniques that can form theoretical system.
Expertise based on contriver and working experience and to the excelsior unremitting pursue of cause, on investigation conscientiously and fully, understanding, analysis, summary, the existing known technology of research and present situation basis, take " microwave oven and technology control " gordian technique, succeed in developing " microwave heating refining magnesium technology ", effectively solved deficiency, defect and the drawback of existing known technology and present situation.
Summary of the invention
The present invention adopts " microwave oven and technology control " gordian technique, its body of heater circle wall upper end and expander are built to make by refractory materials and are connected and lower end and pallet are fixed, expander slides to live with support and is connected, micropore ceramic tube lower end and pallet and upper end and support, body of heater and microwave generator and and housing, housing and upper flange and fix with lower flange, support closing in section and upper flange inner side formation collection magnesium air chamber on above furnace body wall and housing, magnesium gas outlet pipe is fixed with body of heater and with housing after penetrating collection magnesium air chamber, the section that closes up under the following furnace body wall of pallet and housing and lower flange inner side form slag charge chamber, in micropore ceramic tube, put magnesium ball, the indoor slagging material of slag charge, microwave generator power 1-500KW, frequency 300-3000MHz, temperature 1200-1350 DEG C, smelt 15-60 minute, magnesium ball obtains magnesium oxide and calcium oxide by dolomite calcination and adds ferrosilicon again and mix with fluorite afterwards and suppress and form.
The object reaching by the present invention is: 1., adopt " microwave oven and technology control " gordian technique, " microwave oven " special refining magnesium equipment is provided.2., adopt " microwave oven and technology control " gordian technique, " microwave heating technique control " advanced technologies is provided.3., the present invention smelts magnesium ball in the mode of microwave heating, opened up the novel technique of refining magnesium.4., microwave heating process of the present invention, given full play to energy that microwave produces and can directly have been absorbed by material and realize the beneficial effect that entirety evenly heats up.5., the present invention given full play to microwave and had selectivity heating material, temperature rise rate is fast, heating efficiency is high feature, and has the temperature of reaction of reduction, Reaction time shorten, the energy-saving and cost-reducing advantage such as obvious.6., the present invention is provided with micropore ceramic tube, not only can make microwave penetration micropore ceramic tube to magnesium ball implement heating, but also the magnesium gas that can make to be evaporated after the heating of magnesium ball warp to enter collection magnesium air chamber be that the collection of gaseous magnesium is created conditions.7., the present invention is provided with housing, it has not only played provide protection to body of heater, main is to play shielding effect to microwave.8., the present invention is provided with expander, it can make micropore ceramic tube in the physical change process of expanding with heat and contract with cold by supporting and the sliding up and down of expander, thereby play shock absorption, ensured that the safety of equipment and the smooth and easy of production carry out.9., the present invention is novel, reasonable in design, simple in structure, easy to operate, is convenient to that cost of manufacture is low, result of use is reliable and stable, can be applicable widely.
For achieving the above object, technical scheme provided by the invention is:
A kind of microwave heating Mg-smelting furnace, is made up of body of heater, expander, pallet, support, micropore ceramic tube, microwave generator, housing, upper flange, lower flange, collection magnesium air chamber, slag charge chamber, magnesium gas outlet pipe, magnesium ball, slag charge;
Described microwave heating Mg-smelting furnace, upper end in its body of heater circle wall is connected by the mode of building system with refractory materials with expander, lower end in its body of heater circle wall is fixedly connected with pallet, the medial surface of its expander is lived and is connected in the mode sliding up and down with the periphery of support, the open holes of its pallet and the lower end of micropore ceramic tube, the open holes supporting is all fixedly connected with the upper end of micropore ceramic tube, round wall and the microwave generator of its body of heater, the outer wall of body of heater is all fixedly connected with housing, the upper end of its housing and upper flange, the lower end of housing is all fixedly connected with lower flange, it supports the upper common collection magnesium air chamber that forms cone-shaped cavity shape of section and upper flange inner side that closes up with the furnace wall of upper furnace body and housing, its magnesium gas outlet pipe is fixedly connected with body of heater and with housing after penetrating collection magnesium air chamber, its pallet is with the furnace wall of lower furnace body and the lower common slag charge chamber that forms reverse cone-shaped cavity shape of section and lower flange inner side of closing up of housing, in its micropore ceramic tube, be placed with magnesium ball, the indoor slag charge that is placed with of its slag charge.
Described microwave heating Mg-smelting furnace, described body of heater is to build all tapered cavity type structures of rounded in the middle of making and two ends by refractory materials, described expander is to build by refractory materials the lumphy structure of making, described pallet, support is the discoideus structure that is provided with open holes, described micropore ceramic tube is the ceramic tube-like structure that is provided with micropore, described microwave generator is the producer that produces microwave, described housing is all tapered housing shape structures of rounded and two ends in the middle of being, described upper flange, lower flange is flange-like structure, the described cavity of magnesium air chamber as taper that integrate, the cavity that described slag charge chamber is reverse taper, described magnesium gas outlet pipe is tubular structure, described magnesium ball is the ball lumphy structure of human body kidney shape, described slag charge is irregular lumphy structure.
Described microwave heating Mg-smelting furnace, described expander is 3-9, and described micropore ceramic tube is 3-15, and described microwave generator itself is provided with temperature control and refrigerating unit.
A kind of microwave heating refining magnesium technology, application rights requires the microwave heating Mg-smelting furnace described in 1, the power of described microwave generator is that 1-500KW, frequency are that 300-3000MHz, temperature are controlled between 1200-1350 DEG C, be 15-60 minute tap to tap time, and described magnesium ball is through calcining the ball lumphy structure of the human body kidney shape being pressed into after the magnesium oxide obtaining adds ferrosilicon to mix with fluorite with calcium oxide again by rhombspar.
Principle of work of the present invention and working process are:
As everyone knows, microwave heating has strong selectivity to heated material.For example, alumina-ceramic, quartz and organic insulation etc. absorb microwave hardly, the microwave that microwave generator produces can be freely expended energy through these materials and hardly; The magnesium ball being mixed by magnesium oxide and Al-Si powdered alloy has the characteristic of good microwave energy absorbing, can use low-grade ferrosilicon, and price is low, and add-on is many, equals to add into microwave induced body, inhales microwave large, makes oxide compound quick heating and height.Therefore, described magnesium ball is placed in alumina-ceramic (Al
2o), quartz (Si) etc. does not absorb in the container that the material of microwave makes (being exactly the micropore ceramic tube in the present invention specifically), can make microwave pass freely through and expended energy hardly, microwave is implemented heating through micropore ceramic tube to magnesium ball---reach the object of microwave calcination, microwave calcination is to utilize material self to absorb the performance heat reduction material of microwave, just can realize quick, homogeneous heating to magnesium ball.Adopt the mode of original position mullite synthesizing crystalline phase to carry out patent to microwave dedicated ceramic material, obtain the toughness reinforcing principle of microwave metallurgical dedicated bearer body material, develop mechanics and thermal property is good, good thermal shock, microwave dedicated ceramic material---the micropore ceramic tube that coefficient of thermal expansion is low.In addition, the good metallic substance of conductivity produces total reflection to microwave as stainless steel, carbon steel, magnalium, copper, graphite etc., therefore can make sealed vessel with the good metallic substance of conductivity---the housing described in the present invention, the effect of microwave is confined in specific scope, prevent microwave leakage and do not lose the useful energy of microwave, and realize thus the unidirectional reduction reaction under vacuum state, obtain high-quality MAGNESIUM METAL with low cost, high-level efficiency.
The present invention is that 1-500KW, frequency setting are that 300-3000MHz, temperature are controlled between 1200-1350 DEG C, be set as 15-60 minute tap to tap time to the power setting of described microwave generator.Concrete operations are---by opening upper flange, magnesium ball packed in micropore ceramic tube, sealing upper flange, slag charge indoor storage had processed reacted slag charge through thermochemistry last time before this, open microwave generator, just start magnesium ball to implement thermochemistry processing, in this thermochemical reaction process, the magnesium gas generating enters collection magnesium air chamber and transports out through magnesium gas outlet pipe, through 15-60 minute, this time refining magnesium process completes; After this time refining magnesium process completes, open lower flange, emit, leave in slag charge chamber refining specifically the slag charge of retaining after magnesium process completes simultaneously processing reacted slag charge through thermochemistry the last time of described slag charge indoor storage, seal lower flange, refine the operation of magnesium process next time.Of the present invention convenient to operation, effect stability is reliable.In this way, make magnesium ball selectively fast from heating.Due to the heat transfer process not existing as the heating of traditional fuel type or resistance-type heat, magnesium ball can be rapidly heated 1200～1350 DEG C.Certainly in the magnesium ball that the heat that heating produces of magnesium ball impels described magnesium oxide and Al-Si powdered alloy to mix, there is following reduction reaction:
MgO
(Gu)+ Al
(Gu)→ Al
2o
3 (Gu)+ Mg
(gas)↑
MgO
(Gu)+ Si
(Gu)s → iO
2 (Gu)+ Mg
(gas)↑
Wherein, at 1200～1350 DEG C, magnesium occurs and it is collected in good time in gaseous state mode, and ready for gaseous magnesium being carried out to the processing of next procedure, above-mentioned reaction is spontaneous carrying out from left to right.
Penetrate by microwave irradiation, the temperature of whole magnesium ball can be elevated to required reduction temperature very soon, so can shorten at double process period.And, because microwave makes whole magnesium ball by the temperature that raises fast, equably, thereby can make above-mentioned reaction all carry out very equably on molecular scale, thereby described reduction reaction is carried out more thoroughly.
According to an aspect of the present invention, the range of frequency of the microwave applying in described refining magnesium step: 300～3000MHz, makes whole magnesium ball in the situation that not producing glow discharge, reduction reaction to be occurred fast, equably.Magnesium molecule is just ionized after being impacted by microwave radiation, and magnesium ion surface is passivated, magnesium chemical reaction dull, anti-oxidant, nitrogenize performance are strengthened greatly, change traditional type of heating, there is no heat transfer process, the invention of this process for smelting magnesium has changed the shortcoming of existing Technology, has solved deficiency, defect and the drawback of existing known technology and present situation, and this important breakthrough has solved the biggest problem that perplexs magnesium application in nearly 100 years.
According to a further aspect in the invention, vacuum tightness in stove in described microwave calcination step: be greater than 1000Pa, and be less than 100Pa, be preferably greater than 2000Pa, and be less than 10Pa.
According to a further aspect in the invention, reduction temperature in described microwave calcination step: 1000～1400 DEG C, preferably 1200～1300 DEG C.
According to another aspect of the invention, in described magnesium smelting reducing step, the soaking time under reduction temperature: 5～120 minutes, preferably 15～60 minutes.
In implementation process of the present invention, described magnesium occurs and collected in good time in gaseous state mode, ready for gaseous magnesium being carried out to the processing of next procedure, thereby can obtain efficient, highly purified magnesium metal.
Adopt method of the present invention, the energy consumption in magnesium smelting reducing process significantly reduces, reduction reaction speed significantly improves, reduction reaction degree is carried out more thoroughly.Therefore, increase substantially efficiency of utilization, significantly shorten the process-cycle, reduce production costs, the recovery rate of magnesium smelting reducing process of simultaneously obviously having improved (improving), the temperature of device housings of having reduced, improve the life-span of refining magnesium equipment in industrialized mass, realized the optimised process of green refining magnesium.
Owing to having adopted technical scheme provided by the invention, because the present invention has adopted " microwave oven and technology control " gordian technique, described in principle of work of the present invention and working process, because its body of heater of the present invention circle wall upper end and expander are built to make by refractory materials and are connected and lower end and pallet are fixed, expander slides to live with support and is connected, micropore ceramic tube lower end and pallet and upper end and support, body of heater and microwave generator and and housing, housing and upper flange and fix with lower flange, support closing in section and upper flange inner side formation collection magnesium air chamber on above furnace body wall and housing, magnesium gas outlet pipe is fixed with body of heater and with housing after penetrating collection magnesium air chamber, the section that closes up under the following furnace body wall of pallet and housing and lower flange inner side form slag charge chamber, in micropore ceramic tube, put magnesium ball, the indoor slagging material of slag charge, microwave generator power 1-500KW, frequency 300-3000MHz, temperature 1200-1350 DEG C, smelt 15-60 minute, magnesium ball obtains magnesium oxide and calcium oxide by dolomite calcination and adds ferrosilicon again and mix with fluorite afterwards and suppress and form.Make the present invention compared with existing known technology and present situation, there is following beneficial effect:
1, because the present invention has adopted " microwave oven and technology control " gordian technique, thereby provide " microwave oven " special refining magnesium equipment.
2, because the present invention has adopted " microwave oven and technology control " gordian technique, thereby provide " microwave heating technique control " advanced technologies.
3, because the present invention smelts magnesium ball in the mode of microwave heating, thereby opened up the novel technique that refines magnesium.
4, due to described in 1,2,3 of the present invention, thereby established theoretical basis, opened up enforcement precedent for the industrialized production of microwave refining magnesium, solved deficiency, defect and the drawback of existing known technology, refining magnesium technology has been brought up to a brand-new level.
5, microwave heating process of the present invention, has given full play to the energy that microwave produces, and has obtained can directly be absorbed by material and realize the beneficial effect that entirety evenly heats up.
6, the present invention has given full play to microwave and has had selectivity heating material, temperature rise rate is fast, heating efficiency is high characteristic and advantage, and the temperature of whole magnesium ball can be elevated to required reduction temperature very soon, so can shorten at double process period.Because microwave makes whole magnesium ball by the temperature that raises fast, equably, thereby can make above-mentioned reaction all carry out very equably on molecular scale, thereby described reduction reaction is carried out more thoroughly.And have and reduce temperature of reaction, Reaction time shorten, energy-saving and cost-reducing obvious advantage etc.
7, the invention enables whole magnesium ball in the situation that not producing glow discharge, reduction reaction to be occurred fast, equably.Magnesium molecule is just ionized after being impacted by microwave radiation, and magnesium ion surface is passivated, magnesium chemical reaction dull, anti-oxidant, nitrogenize performance are strengthened greatly, change traditional type of heating, there is no heat transfer process, the invention of this process for smelting magnesium has changed the shortcoming of existing Technology.
8, the present invention is provided with micropore ceramic tube, not only can make microwave penetration micropore ceramic tube to magnesium ball implement heating, but also the magnesium gas that can make to be evaporated after the heating of magnesium ball warp to enter collection magnesium air chamber be that the collection of gaseous magnesium has been created to condition.
9, the present invention is provided with housing; it has not only played provide protection to body of heater; main is to play shielding effect to microwave; the effect of microwave is confined in specific scope; prevent microwave leakage and do not lose the useful energy of microwave; and realize thus the unidirectional reduction reaction under vacuum state, obtain high-quality MAGNESIUM METAL with low cost, high-level efficiency.
10, the present invention is provided with expander, it can make micropore ceramic tube in the physical change process of expanding with heat and contract with cold by supporting sliding up and down between outer edge and expander, thereby play shock absorption, ensured that the safety of equipment and the smooth and easy of production carry out.
11, the invention belongs to green production, environment is not produced to pollution, effectively protected environment.
12, the deficiency, defect and the drawback that the invention solves existing known technology and present situation, this important breakthrough has solved the biggest problem that perplexs nearly 100 years magnesium industries.
13, the present invention is novel, reasonable in design, simple in structure, easy to operate, is convenient to that cost of manufacture is low, result of use is reliable and stable, can be applicable widely.
Brief description of the drawings
Figure of description is the schematic diagram of microwave heating Mg-smelting furnace and refining magnesium situation thereof in the specific embodiment of the invention.
Embodiment
Below in conjunction with Figure of description, the present invention is described in detail.Shown in Figure of description:
A kind of microwave heating Mg-smelting furnace, is made up of body of heater 1, expander 2, pallet 3, support 4, micropore ceramic tube 5, microwave generator 6, housing 7, upper flange 8, lower flange 9, collection magnesium air chamber 10, slag charge chamber 11, magnesium gas outlet pipe 12, magnesium ball 13, slag charge 14;
Described microwave heating Mg-smelting furnace, upper end in its body of heater 1 circle wall is connected by the mode of building system with refractory materials with expander 2, lower end in its body of heater 1 circle wall is fixedly connected with pallet 3, the medial surface of its expander 2 is lived and is connected in the mode sliding up and down with the periphery that supports 4, the lower end of the open holes of its pallet 3 and micropore ceramic tube 5, the open holes of support 4 is all fixedly connected with the upper end of micropore ceramic tube 5, the round wall of its body of heater 1 and microwave generator 6, the outer wall of body of heater 1 is all fixedly connected with housing 7, the upper end of its housing 7 and upper flange 8, the lower end of housing 7 is all fixedly connected with lower flange 9, the upper closing in section of its support 4 furnace walls with upper furnace body 1 and housing 7 and upper flange 8 inner sides form the collection magnesium air chamber 10 of cone-shaped cavity shape jointly, its magnesium gas outlet pipe 12 is fixedly connected with body of heater 1 and with housing 7 after penetrating collection magnesium air chamber 10, its pallet 3 is with the furnace wall of lower furnace body 1 and the lower common slag charge chamber 11 that forms reverse cone-shaped cavity shape of section and lower flange 9 inner sides of closing up of housing 7, in its micropore ceramic tube 5, be placed with magnesium ball 13, in its slag charge chamber 11, be placed with slag charge 14.
Described microwave heating Mg-smelting furnace, described body of heater 1 is for being built all tapered cavity type structures of rounded in the middle of making and two ends by refractory materials, described expander 2 is for to build by refractory materials the lumphy structure of making, described pallet 3, support 4 and be the discoideus structure that is provided with open holes, described micropore ceramic tube 5 is for being provided with the ceramic tube-like structure of micropore, described microwave generator 6 is for producing the producer of microwave, described housing 7 is all tapered housing shape structures of middle rounded and two ends, described upper flange 8, lower flange 9 is flange-like structure, the described cavity of magnesium air chamber 10 as taper that integrate, the cavity that described slag charge chamber 11 is reverse taper, described magnesium gas outlet pipe 12 is tubular structure, described magnesium ball 13 is the ball lumphy structure of human body kidney shape, described slag charge 14 is irregular lumphy structure.
Described microwave heating Mg-smelting furnace, described expander 2 is 3-9, and described micropore ceramic tube 5 is 3-15, and described microwave generator 6 itself is provided with temperature control and refrigerating unit.
A kind of microwave heating refining magnesium technology, application rights requires the microwave heating Mg-smelting furnace described in 1, the power of described microwave generator 6 is that 1-500KW, frequency are that 300-3000MHz, temperature are controlled between 1200-1350 DEG C, be 15-60 minute tap to tap time, and described magnesium ball 13 is through calcining the ball lumphy structure of the human body kidney shape being pressed into after the magnesium oxide obtaining adds ferrosilicon to mix with fluorite with calcium oxide again by rhombspar.
In above-mentioned specific implementation process: described expander 2 is implemented with 3,4,5,6,7,8,9 respectively; Described micropore ceramic tube 5 is implemented with 3,4,5,6,7,8,9,10,11,12,13,14,15 respectively; To the power of described microwave generator 6 respectively with 1,10,30,50,80,100,120,140,160,180,200,230,260,300,330,370,400,450,500KW implements; The frequency of described microwave generator 6 is implemented with 300,400,500,600,700,800,900,1000,1200,1500,1800,2000,2300,2500,2800,3000 megahertzes respectively; The temperature of described microwave generator 6 is implemented to be controlled at respectively 1200,1220,1240,1260,1280,1300,1320,1350 DEG C; To implementing with 15,20,25,30,35,40,45,50,55,60 minutes respectively described tap to tap time; All obtain the good result of expection.
Be more than preferred embodiment of the present invention, not the present invention done to any pro forma restriction; The those of ordinary skill of all industry, all can implement the present invention with the above shown in by specification accompanying drawing swimmingly; But in the equivalent variations that does not depart from technical solution of the present invention and make differentiation, be equivalent embodiment of the present invention, all belong to technical scheme of the present invention.
Claims (4)
1. a microwave heating Mg-smelting furnace, is characterized in that: be made up of body of heater (1), expander (2), pallet (3), support (4), micropore ceramic tube (5), microwave generator (6), housing (7), upper flange (8), lower flange (9), collection magnesium air chamber (10), slag charge chamber (11), magnesium gas outlet pipe (12), magnesium ball (13), slag charge (14);
Described microwave heating Mg-smelting furnace, upper end in its body of heater (1) circle wall is connected by the mode of building system with refractory materials with expander (2), lower end in its body of heater (1) circle wall is fixedly connected with pallet (3), the medial surface of its expander (2) is lived and is connected in the mode sliding up and down with the periphery of support (4), the lower end of the open holes of its pallet (3) and micropore ceramic tube (5), the open holes that supports (4) is all fixedly connected with the upper end of micropore ceramic tube (5), the round wall of its body of heater (1) and microwave generator (6), the outer wall of body of heater (1) is all fixedly connected with housing (7), the upper end of its housing (7) and upper flange (8), the lower end of housing (7) is all fixedly connected with lower flange (9), it supports (4) with the furnace wall of upper furnace body (1) and the upper common collection magnesium air chamber (10) that forms cone-shaped cavity shape of section and upper flange (8) inner side that closes up of housing (7), its magnesium gas outlet pipe (12) is fixedly connected with body of heater (1) and with housing (7) after penetrating collection magnesium air chamber (10), its pallet (3) is with the furnace wall of lower furnace body (1) and the lower common slag charge chamber (11) that forms reverse cone-shaped cavity shape of section and lower flange (9) inner side of closing up of housing (7), in its micropore ceramic tube (5), be placed with magnesium ball (13), in its slag charge chamber (11), be placed with slag charge (14).
2. microwave heating Mg-smelting furnace according to claim 1, it is characterized in that: described body of heater (1) is for being built all tapered cavity type structures of rounded in the middle of making and two ends by refractory materials, described expander (2) is for to build by refractory materials the lumphy structure of making, described pallet (3), support (4) and be the discoideus structure that is provided with open holes, described micropore ceramic tube (5) is for being provided with the ceramic tube-like structure of micropore, described microwave generator (6) is for producing the producer of microwave, described housing (7) is all tapered housing shape structures of middle rounded and two ends, described upper flange (8), lower flange (9) is flange-like structure, the described cavity of magnesium air chamber (10) as taper that integrate, the cavity that described slag charge chamber (11) is reverse taper, described magnesium gas outlet pipe (12) is tubular structure, described magnesium ball (13) is the ball lumphy structure of human body kidney shape, described slag charge (14) is irregular lumphy structure.
3. microwave heating Mg-smelting furnace according to claim 1, it is characterized in that: described expander (2) is 3-9, described micropore ceramic tube (5) is 3-15, and described microwave generator (6) itself is provided with temperature control and refrigerating unit.
4. a microwave heating refining magnesium technology, it is characterized in that: application rights requires the microwave heating Mg-smelting furnace described in 1, the power of described microwave generator (6) is that 1-500KW, frequency are that 300-3000MHz, temperature are controlled between 1200-1350 DEG C, be 15-60 minute tap to tap time, and described magnesium ball (13) is through calcining the ball lumphy structure of the human body kidney shape being pressed into after the magnesium oxide obtaining adds ferrosilicon to mix with fluorite with calcium oxide again by rhombspar.
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|---|---|---|---|
| CN201410140973.5A CN103882247B (en) | 2014-04-10 | 2014-04-10 | Microwave heating refining magnesium technology |
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| CN201410140973.5A CN103882247B (en) | 2014-04-10 | 2014-04-10 | Microwave heating refining magnesium technology |
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| CN103882247B CN103882247B (en) | 2015-09-02 |
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| CN201410140973.5A Expired - Fee Related CN103882247B (en) | 2014-04-10 | 2014-04-10 | Microwave heating refining magnesium technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567969A (en) * | 2015-12-17 | 2016-05-11 | 于洪喜 | Magnesium smelting process with microwave carbon method |
| CN106756107A (en) * | 2016-12-27 | 2017-05-31 | 深圳市中启新材料有限公司 | A kind of vacuum microwave magnesium smelting device |
| CN110408797A (en) * | 2019-08-19 | 2019-11-05 | 中国铝业股份有限公司 | A kind of vacuum smelting furnace for reducing metal magnesium |
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| CN101376928A (en) * | 2008-10-10 | 2009-03-04 | 重庆高岭投资（集团）有限公司 | Process for smelting magnesium by microwave heating Pidgeon process |
| CN201313927Y (en) * | 2008-11-14 | 2009-09-23 | 太原理工大学 | Microwave fluidized bed furnace for preparing magnesium calcining dolomite |
| CN101892395A (en) * | 2010-06-12 | 2010-11-24 | 安泰科技股份有限公司 | Method for smelting magnesium by decomposition in vacuum through microwaves |
| CN102277506A (en) * | 2011-08-01 | 2011-12-14 | 开泰镁业有限公司 | Process of smelting magnesium by use of heating method |
| CN203782209U (en) * | 2014-04-10 | 2014-08-20 | 于洪喜 | Microwave heating magnesium smelting furnace |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101376928A (en) * | 2008-10-10 | 2009-03-04 | 重庆高岭投资（集团）有限公司 | Process for smelting magnesium by microwave heating Pidgeon process |
| CN201313927Y (en) * | 2008-11-14 | 2009-09-23 | 太原理工大学 | Microwave fluidized bed furnace for preparing magnesium calcining dolomite |
| CN101892395A (en) * | 2010-06-12 | 2010-11-24 | 安泰科技股份有限公司 | Method for smelting magnesium by decomposition in vacuum through microwaves |
| CN102277506A (en) * | 2011-08-01 | 2011-12-14 | 开泰镁业有限公司 | Process of smelting magnesium by use of heating method |
| CN203782209U (en) * | 2014-04-10 | 2014-08-20 | 于洪喜 | Microwave heating magnesium smelting furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105567969A (en) * | 2015-12-17 | 2016-05-11 | 于洪喜 | Magnesium smelting process with microwave carbon method |
| CN106756107A (en) * | 2016-12-27 | 2017-05-31 | 深圳市中启新材料有限公司 | A kind of vacuum microwave magnesium smelting device |
| CN110408797A (en) * | 2019-08-19 | 2019-11-05 | 中国铝业股份有限公司 | A kind of vacuum smelting furnace for reducing metal magnesium |
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| CN103882247B (en) | 2015-09-02 |
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