CN100400686C - Magnesium-refined smelting method by resistance furnace - Google Patents
Magnesium-refined smelting method by resistance furnace Download PDFInfo
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- CN100400686C CN100400686C CNB200610020840XA CN200610020840A CN100400686C CN 100400686 C CN100400686 C CN 100400686C CN B200610020840X A CNB200610020840X A CN B200610020840XA CN 200610020840 A CN200610020840 A CN 200610020840A CN 100400686 C CN100400686 C CN 100400686C
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Abstract
A method for roasting magnesite into magnesium is carried out by pelleting to form into stock ball, delivering into large resistor furnace, raising temperature to a certain temperature by electric energy, starting hot-water boiler, firing water into aqueous steam, entering into A carbon resistor furnace, reacting high-temperature magnesium-oxide with hydrogen in water gas, replacing liquefied crude magnesium with oxygen in magnesium oxide, flowing into B magnesium resistor furnace, raising temperature for liquefied magnesium to 1120-1180 degree by electric energy, converting magnesium into steam, delivering into magnesium condenser, cooling to form into solid refined magnesium and packing under enclosed state to obtain final product.
Description
The field: the present invention uses pyrogenic process the method for heavy-calcined magnesia ore deposit or the smart magnesium of the disposable smelting of magnesite, is same as engineering of pyrometallurgical smelting MAGNESIUM METAL and so on.
Present prior art:
There are many kinds to smelt the magnesium method at present,, are used to smelt magnesium as electrolytic chlorination magnesium.With electric furnace magnesium chloride is heated the method that crude magnesium is removed to smelt with carbon or ferrosilicon in the back.Extract the method for smelting crude magnesium with the electrolytic furnace molten magnesium chloride.Remove the distillation crude magnesium with electric energy and coal gas, use the method for the straight empty smart magnesium of purifying.
Goal of the invention:
With the heavy-calcined magnesia ore deposit or use magnesite after being sintered into magnesia powder, again with petroleum pitch, after the stirring, suppress agglomerating output pellet φ 25-40, after mixing, again their dry backs are added in the big resistance furnace of closed with metallurgical coke piece (50-80), electric energy is warmed up to 1000 ℃-1050 ℃ to raw material, hot water boiler burns water vapour, is transported in the A carbon resistance stove, and electric energy is warmed up to 880 ℃-1080 ℃ to metallurgical coking coal and makes water H
2O resolves into water-gas (H
2O+C Δ=H
2+ together to import after CO) in the big resistance furnace and fervid magnesium oxide, the Sauerstoffatom that is changed out in the magnesium oxide by hydrogen forms (H
2+ MgO Δ=Mg+H
2O) magnesium is smelted out become liquid magnesium, flow in the B magnesium resistance furnace, open temperature to 1120 ℃-1180 ℃ with electric energy, evaporation became solid-state magnesium at input magnesium condenser internal cooling after becoming magnesium vapor after liquid magnesium was heated up, all under the condition of fully-closed, carry out, after pack in the tr of fully-closed, transport the smart magnesium products of finished product.
Technical solution of the present invention:
Heavy-calcined magnesia powder or high-quality magnesite, magnesite uses crusher ore, be broken into (50-60) lump ore, use metallurgical coke piece (50-80) (weight ratio 1: 0.5=1: 0.6) mix in the blast furnace of back in proportion again, after firing, carbon burning and ore are warmed up to 1300 ℃ more than-1400 ℃ jointly, after the carbonate in the ore is decomposed, become carbonic acid gas and magnesia powder.(MgOCO
3Δ=MgO+CO
2C+O
2Heating generates CO and CO
2Deng) the gas discharge, be sintered into magnesia powder.Perhaps raw material itself is exactly a magnesia powder, magnesium is smelted just need not calcine this section operation, directly pour into and add a certain amount of petroleum pitch in the stirrer, after mixing stirring, send into agglomerating machine again and be pressed into pellet φ 25-40, after mix with metallurgical coke piece (φ 50-80) again, by weight (1: 1.2-1: 1.5) enter kiln dried after, send in the big resistance furnace of closed, behind the logical upward power supply of resistance furnace, they are warmed up to 1000 ℃-1050 ℃ jointly by electric energy, principle and method that resistance furnace heats up are, coke block is the bigger conductor of resistance, and the resistance that passes through when electric current converts electric energy to heat energy, because pellet is in the position, hole of burnt nugget, the thermal energy conduction of coke block is given pellet, when making pellet and coke block be warmed up to 1000 ℃-1050 ℃ jointly,, water is burnt till water vapour again by hot water boiler, send in the A carbon resistance stove, coke block (50-80) in the stove of resistance furnace energising back is warmed up to rapidly more than 880 ℃, and water vapour and fervid coke layer produce thermal chemical reaction and generate water-gas (H
2O+C Δ=H
2+ CO) together be transported in the big resistance furnace, high-temperature hydrogen and magnesium oxide reaction solution attitude magnesium, because the boiling point of magnesium is 1105 ℃, (H
2+ MgO Δ=Mg+H
2O) pyritous water vapour is resolved into hydrogen and coal gas (H by the carbon-coating of red heat once again
2O+C Δ=H
2+ CO), the inventive method just can be smelted into liquid magnesium to more magnesium oxide with water vapour in a small amount.Equal the water vapour catalyzer also! Liquid magnesium flows in the B magnesium resistance furnace.The resistance furnace energising is warmed up to 1120 ℃-1180 ℃ to liquid magnesium, make magnesium become gaseous magnesium (magnesium vapor), because of magnesium boiling point (1105 ℃), gaseous magnesium is sent into to lower the temperature in the magnesium condenser and is cooled to below 100 ℃, is transformed into solid-state magnesium after the magnesium XianCheng liquid state, packs under airtight condition, and become product to transport in the airtight container of packing into, coal gas (CO) in the resistance furnace is transported in the gas chamber after being washed by vacuum fan suction water duster, is transported to the place with coal gas again, and defeated a part of coal gas is used to hot water boiler.After slag is regularly discharged, the omnidistance whole process of smelting that Here it is.
Actually operating of the present invention and technical process:
The raw material of the present invention's one usefulness is that re-oxidation magnesium powder or magnesite are when doing raw material, be broken into 40-60 material piece with crusher, metallurgical coke can be with the coke block that manually is broken into 60-80, add after drying and forge in the material stove, be sintered into magnesia powder after firing, taking out magnesia powder in the stove pours in the stirrer, add a certain amount of petroleum pitch, mix and stir in the agglomerating machine of back input, be pressed into the pellet of (Φ 25-40), and pellet and coke block (Φ 50-80) are mixed (ratio 1: 1.2-1: 1.5) send in the drying machine after the oven dry, in packing in the big resistance furnace of closed, packed in the resistance furnace by the closed loading hopper, big resistance furnace shell is to make round tube type with roll of steel plate, in to have in thermal insulation layer (perlite) thermal insulation layer be that refractory brick and graphite carbon brick volume is built the flue that forms, in be furnace chamber.Graphite carbon brick electrode is divided into A, B, C three-phase and with furnace transformer, be interconnected to the loop with copper Conductive holding element, copper electric wire, furnace transformer is connected with supply lead with control panel again.The furnace chamber of big resistance furnace is large and small and high, short to be can smelt magnesium output by the resistance furnace of planner's design to decide.I am an example with the smelting furnace of 3000 tons of smart magnesium of annual output that I design, big resistance furnace rolls into round tube type with steel plate S10-16, diameter is 2800, interior dress insulation layer thickness is about 200, the interior refractory brick of building becomes round tube type with Graphite Electrodes, total thickness is about 400, and internal resistance furnace chamber diameter is about 1600 like this, and height is 5800.The furnace transformer total power is about 4800KVA.The bell of resistance furnace is with being welded into closed with steel plate and body of heater shell entirely; on the closed loading hopper is arranged; form by lid and valve; the tracheae of coming out of the stove outward links to each other with upper of furnace body; the flue tube that goes out furnace gas links to each other with water duster; fly-ash separator links to each other with water source tube, in the dedusting Shower tap is installed, it is strong that water is sprayed into thin pearl; spray to flue dust; interior 3-4 road dividing plate is in addition gone up the dividing plate that foraminate steel plate is welded into, and is used to increase the function that connecing of water and dust made number of times; obtain dedusting better and reduce the temperature that furnace gases; might as well protection vacuum fan etc., vacuum fan dedusting after, moisture-laden gas is sent in the gas chamber to the user.
The shaft and the bell of big resistance furnace all are equipped with pyrometer outward, are used for measuring and control furnace temperature usefulness, and 3 water inlet gas apertures are installed in the bottom of big resistance furnace, become φ 120 arc length in the furnace chamber of resistance furnace.A carbon resistance stove is identical with the structure of big resistance furnace, and difference has a closed to add the carbon bucket on the head, and carbon is from adding in the airtight adding body of heater of carbon bucket, after heat up into the coke block of the red heat more than 1000 ℃.Something in common all converts heat energy to electric energy the metallurgical coke piece is warmed up to more than 1000 ℃, has sent into water vapour at the bottom of the A resistance furnace, pyritous carbon in the resistance furnace, carry out the Thermochemical Decomposition reaction with water vapour, after generating water-gas, in the furnace chamber at the bottom of the big resistance furnace of direct sending, (H
2O+C Δ=H
2+ CO), hydrogen in the water-gas is the magnesium oxide ore deposit in the big resistance, in Sauerstoffatom seize, smelt liquid magnesium (H
2+ MgO Δ=H
2The O+Mg liquid state).The diameter of A carbon hot resistance stove is little, and interior furnace chamber φ communicates in big resistance furnace chamber at the bottom of last three Kong Yuda resistance furnaces at 600-800.Its base fabric also has three water vapour pipelines, in the straight-through equally A carbon resistance furnace chamber.It is burnt the water vapour that and is fed in the A carbon resistance by hot water boiler, and A carbon resistance stove could produce water-gas (H like this
2CO).Utilize the electrical equipment dress system of control panel, show how many high temperature, again with the size of control voltage height and electric current, control coal supply tolerance and water how much, controlled product water-gas amount how much.Same method is controlled the parameter of big resistance furnace and B magnesium resistance furnace, obtains process and effect that optimum parameter is smelted smart magnesium jointly.Be built into refractory brick at the bottom of the big resistance furnace, become 8 °-10 ° little inclined-plane, the angle place has one to go out the magnesium mouth, it is one in B magnesium resistance furnace, and the structure of B magnesium resistance furnace is identical with big resistance furnace, and just body of heater is much smaller, interior furnace chamber diameter phi 360-480, roll shell with steel plate equally, interiorly link to each other with furnace transformer, by the work of the energising of the on-off control on the control panel by refractory brick, graphite carbon brick electrode, copper Conductive holding element, copper conductor.After the energising of B magnesium resistance furnace, liquid magnesium is warmed up to 1120 ℃-1180 ℃ with electric energy, makes the magnesium temperature control flash to magnesium vapor, because the boiling point of magnesium is 1105 ℃.It has a magnesium vapor pipe to link to each other with the magnesium condensation, and magnesium vapor is by magnesium vapor pipe input magnesium condenser, and the magnesium condenser is cooled to the magnesium vapor of input to transport into smart magnesium products in the sealing bucket of 100 ℃ of following closeds packings.
The principles of science:
Because the magnesium metal is one of metal of very alive group, be again one of light non-ferrous metal, under 1200 ℃ of-1400 ℃ of high temperature with calcined magnesium powder stove, magnesite just becomes magnesium oxide and carbonic acid gas (MgCO to magnesiumcarbonate ore deposit pyrolytic decomposition
3Δ=MgO+CO
2) powdered re-oxidation magnesium and petroleum pitch mixes and be pressed into pellet, principle is unusual science, so just can enter in the hole that is blended in the big coke block of φ in the big resistance furnace, coke block is the big conductor of resistance of conduction, it can generate heat at the big electric current that pass through well like this, electric energy is changed into heat energy, pellet (magnesium oxide) is warmed up between 880 ℃-1080 ℃, the size of the control panel control voltage height and the magnitude of current, make big resistance furnace, A carbon resistance stove, B magnesium resistance furnace temperature will resolve into water-gas (H because of water vapour mixing with the pyritous carbon-coating again in optimum parameter
2O (steam)+C Δ=H
2+ CO) also be most critical in this smelting method, science, produce the method for hydrogen.Again because of hydrogen is best in the existing industrial production, one of material that reductibility is the strongest, hydrogen it can be at high temperature and pyritous magnesium oxide, produce bonded and take oxygen reaction (H by force
2+ MgO Δ=Mg+H
2O (steam)) smelt liquid crude magnesium, simultaneously under the water vapour condition of high temperature, again with resistance furnace in the pyrocarbon atomic reaction generate water-gas (H
2O (steam)+C Δ=H
2+ CO) continuous again and magnesium oxide reaction, water vapour plays the function of catalyzer, is the optimal effect of the present invention.Liquid crude magnesium flows in the B magnesium resistance furnace, the purified process is that resistance furnace changes into heat energy with electric energy, liquid crude magnesium is heated up makes magnesium become magnesium vapor for 1105 ℃ to 1120 ℃-1180 ℃ above the magnesium boiling point, nature is removed the impurity in the crude magnesium, magnesium vapor is exactly smart magnesium, the smart magnesium vapor of the content 99.99%-99.995% of magnesium is cooled to become liquid magnesium about 1000 ℃ entering magnesium condenser elder generation temperature control under the airtight condition, following current is gone into magnesium condenser hypomere and is cooled to gradually below 100 ℃ again, becomes solid-state magnesium and is sealed formula and is packaged into product (in the hermetically sealed container).The water duster on top is removed flue dust in the coal gas of coming out of the stove and is cooled below 100 ℃, obtain not only dedusting, but also cooling be unusual science, moisture-laden gas suction gas chamber, back water is discharged from, coal gas is delivered to user's use.Obtain cleaning and safe effect.
The effect of comparing with background technology:
1, the present invention's method and technology, equipment of smelting smart magnesium all carries out under airtight condition, and more simple and reliable than the technical process of electrolytic chlorination magnesium, safety in operation and environmental protection and energy saving are all much better.
2, the present invention is littler than electrolyzing fused magnesium chloride power consumption, there is no the danger of chlorine.Not only environmental protection but also energy-conservation, and disposablely smelt smart magnesium, be unique technology in the magnesium smelting method.
3, resistance furnace changes into heat energy to electric energy, it is the most practical again the simplest method, do not have in the background technology, hydrogen in the water-gas is best reductive agent, it can only could smelt liquid crude magnesium to magnesium oxide well in resistance furnace of the present invention, because temperature of reaction is controlled at the following best effect of magnesium boiling point, so background technology can not match well mutually.
4, the hot water boiler among the present invention burns till water vapour to water, it is very simple science again, after water vapour enters in the A resistance furnace, with the A carbon resistance furnace electric energy being changed into heat energy makes the carbon control in the coke block be warmed up to 880 ℃-1080 ℃ in best water-gas occurrence temperature, it is the most energy-conservation production hydrogen method, and producing the method for hydrogen the most at an easy rate, background technology does not have.
5, the Sauerstoffatom that changes out in the high temperature oxidation magnesium with the hydrogen method in the water-gas is that very science is with simple, because hydrogen is one of best reductive agent, cost is also very low, and background technology is out of the question.
6, background technology smelts crude magnesium cost height with the magnesium that ferrosilicon goes to convert in the magnesium chloride, the technical process complexity, and poor reliability, seriously polluted etc.
7, the present invention can control well with B magnesium resistance furnace that crude magnesium is become gaseous state smart magnesium by liquid state intensification distillation is science very, and background technology is out of the question.
8, magnesium condenser of the present invention after the smart magnesium vapor of the fine sectional temperature-controlled condensation of energy becomes liquid smart magnesium, is cooled to solid-state smart magnesium (99.99%-99.995%) more gradually, advances the interior back of the container one-tenth product of sealing with fine airtight package.It is good that the geometric ratio background technology is operated in technical process simply well.
Realize best way of the present invention with existing installation, material:
The present invention is in league with magnesite, coke block by calcining furnace (12) and is sintered into magnesia powder in stove, discharges through going out magnesium oxide mouth (39), is pressed into pellet with petroleum pitch, and dry back adds in the big resistance furnace (8).Electric power control panel (1) top is equipped with the switch of instrument, pilot lamp, thermometer, various control usefulness, connect with conductive copper wire (3), be connected with copper conductor (3) with three arc furnace transformers (2) again, and be connected with the thermometer of fine copper wire with the thermopair of pyrometer (37), be used for surveying the temperature of showing each resistance furnace, use switch and other operating device on the control panel (1) again, the size of the control voltage height and the magnitude of current, guaranteeing to work under the state on the optimum parameter in resistance furnace (7), (8), (18) carries out the whole process of magnesium smelting.
Hot water boiler of the present invention (6), have in water source water inlet pipe (25) and the body of heater (6), be heated into behind the water vapour by in moisture vapor transport pipe (26) the input A carbon resistance stove (7) by boi1er tube (29), gas inlet pipe (31) and upper valve (20) and gas blower (17), they are used for controlling air quantity and gas quantity, control flooding quantity size and temperature with go out steam vapour amount how much, must best effect.Outer also have stempoda frame (36) to form, and water vapour enters (7) back and the fervid coke layer of pyritous in the A carbon resistance furnace, produces thermal chemical reaction and generates water-gas (H
2O (steam)+C Δ=H
2+ CO) be conveyed in the furnace chamber of big resistance furnace (8) with pneumatic tube (26).The shell of A carbon hot resistance stove (7) is that steel plate (9) rolls the work under the fully-closed state that forms.There are the carbon of adding hopper (22) and valve (20), hopper cover (21) to form at furnace roof, after the preheating in the airtight furnace chamber that joins A carbon resistance stove (7) of 800 ℃-900 ℃ fervid coke block, reinforced process is after opening hopper cover (21) adding carbon piece earlier, after shutting hopper cover, open hopper valve (20) again, the carbon piece shuts valve (20) after falling into furnace chamber, and reinforced like this process is fully-closed.Be to be that refractory brick (4) and Graphite Electrodes (5) are divided into trisection well in the thermal insulation layer (10) inside and outside the stove of A carbon resistance stove (7), the common furnace chamber of forming resistance furnace, coke block in furnace chamber after the energising of copper Conductive holding element (35) and Graphite Electrodes (5), when electric current passes through coke block, make coke block be warmed up to 880 ℃-1080 ℃, water vapour just can guarantee to change into water-gas like this.Come out of the stove cinder notch (30) and valve (20) of the bottom of A carbon resistance stove (7) formed, and is used to slag usefulness, under be body of heater bearing (34).In upper of furnace body and middle part pyrometer (37) is installed all.The water gas pipe (26) of A carbon resistance stove (7) is sent into water-gas in the furnace chamber of big resistance furnace (8) bottom continuously, the shell of big resistance furnace is to roll with steel plate (9) to form, in thermal insulation layer (10) is arranged is perlite, formed by refractory brick (4) and the graphite utmost point (5) and copper Conductive holding element (35) again, with copper conductor (3) furnace transformer (2), directly arrive control panel (1), have slag notch (30) and valve (20) to form below and be used for regularly slagging tap usefulness.Big resistance furnace (8) is in the body of heater bottom also has a furnace chamber that the straight-through B magnesium resistance furnace (18) of liquid crude magnesium mouth (28).Big resistance furnace (8) top has loading hopper (19) and lid (21) to form, through dried magnesium oxide with petroleum pitch stir the material be pressed into 25-40 and coke block (50-80) by (1: 1.2-1: 1.5) mix after, hopper cover (21) is opened all to add in the big resistance furnace chamber, build again resistance furnace is worked under air-tight state, by making coke and pellet in the furnace chamber be warmed up between 1000 ℃-1050 ℃ hydrogen (H in the water-gas jointly behind control panel (1) and furnace transformer (2) the connection electricity
2+ CO) produce replacement(metathesis)reaction, (H with magnesium oxide
2+ Mgo=Mg+H
2O) hydrogen smelts liquid magnesium.The interior generation of stove connects the reaction that continues, H so simultaneously
2O (steam)+C Δ=H
2+ CO hydrogen displaces magnesium atom again, makes in the big resistance furnace (8), smelts liquid crude magnesium continuously and flows in the magnesium refining B magnesium resistance (18), and big resistance furnace (8) integral body is placed on the bearing (34).CO remaining in the resistance furnace (8) is with it goes out furnace gases through flue dust pipe (27) altogether, in the water duster (11) on vacuum fan suction stove top, the water source supplies water and to enter water pipe (25) and flow out to Shower tap (24) water is sprayed into droplet, with go out furnace gas and mix dust, after dividing plate through many apertures are arranged (23) multiple tracks connects and does dedusting again, slag notch (30) is discharged the dirt slag, and coal gas is lowered the temperature supplies with user and hot water boiler by gas pipe (32) output after gas chamber (33) is taken out by vacuum fan (14) in the back.On valve 20 dominant discharge are arranged.Pyrometer (37) is all arranged everywhere, liquid crude magnesium is after going out magnesium pipe (28) inflow B magnesium resistance furnace (18), by smart magnesium stove liquid crude magnesium is warmed up to 1120 ℃-1180 ℃ with electric energy, make crude magnesium become magnesium vapor from liquid distillate, because the boiling point of magnesium is 1105 ℃, about magnesium vapor pipe (16) is sent into magnesium condenser (13) internal cooling to 100 ℃, show by thermometer (15) and to look out.Become smart magnesium to pack into and become product in the packaging vessel (38).Have in the thermal insulation layer (10) in B magnesium resistance furnace (28) external application steel plate rolls three-phase electrode (5) that to be refractory brick (4) make with graphite carbon the same with other resistance furnace have copper Conductive holding element (35) and copper conductor and furnace transformer (2) connect control panel (1) in liquid magnesium flows into stove after just energising, electric energy is transformed in the scope that heat energy is warmed up to crude magnesium 1120 ℃-1180 ℃, guarantees that crude magnesium is distilled into smart magnesium.So that being installed, pyrometer (37) is used for measuring and controlled temperature usefulness outward.On have magnesium vapor pipe (16) road junction to link to each other with magnesium condenser (13), down in foot support (36).Be cooled to gradually below 100 ℃ after smart magnesium vapor is sent into magnesium condenser (13), magnesium vapor is cooled to the smart magnesium of solid and is admitted in the dress magnesium container (38) all closed and is packaged into the smart magnesium of product and sells, and this is with regard to complete smelting process of haveing suffered magnesium.
The resistance furnace that re-oxidation magnesium ore deposit directly smelts into smart magnesium is to carry out under air-tight state, the materials transportation system of full stove, tackling system, material forming system, water drainage-supply system, power supply system etc.. directly do not belong within the present invention, so do not adding explanation at this.
Re-oxidation magnesium ore deposit directly smelts into smart magnesium method smelting furnace and divides large, medium and small type, 10,000 tons of large-scale annual outputs, and medium-sized annual production is at 5000 tons, and small-sized annual production is at 3000 tons of magnesium.
It more than is most preferably example of the present invention, be with outside the electric energy high-temperature vapor, big resistance furnace A, B resistance furnace with electricity as the energy, under air-tight state, directly re-oxidation magnesium mining and metallurgy is produced the smelting furnace of smart magnesium, coal gas, slag and water vapour, smelt copper, iron, antimony etc. with this method ... metal, the modification stove of the molten long-pending size of pipe furnace and various forms does not all belong in the scope of the present invention.
Description of drawings
Fig. 1 is mm for the length arithemetic unit of explanatory view specification sheets of the present invention.
1, control panel 21, hopper cover
2, arc furnace transformer 22, loading hopper
3, copper conductor 23, water dividing plate
4, refractory brick 24, Shower tap
5, graphite carbon brick electrode 25, water inlet pipe
6, hot water boiler 26, water vapour pipe and gas pipe
7, A carbon resistance stove 27, flue dust pipe
8, big resistance furnace 28, liquid magnesium pipe
9, steel plate, S6-18 29, boi1er tube
10, thermal insulation layer 30, slag notch
11, water duster 31, advance gas pipe
12, magnesium calcining furnace 32, coal gas go out pipe
13, magnesium condenser 33, gas chamber
14, vacuum fan 34, body of heater bearing
15, thermometer 35, copper Conductive holding element
16, magnesium vapor pipe 36, furnace body support
17, gas blower 37, pyrometer
18, B magnesium resistance furnace 38, adorn smart magnesium bucket
19, add carbon bucket 39, go out the magnesium oxide mouth
20, valve
Claims (5)
1. directly smelt into smart magnesium method with the magnesium oxide ore deposit for one kind, it is characterized in that: use electric energy, water-gas and metallurgical coke are the magnesium oxide ore deposit, disposablely smelt smart magnesium, the smelting magnesium method of coal gas and slag, comprise that step is, oxidation powder and petroleum asphalt mixture after will stirring with briquetting machine are pressed into pellet, φ is that 25-40mm and coke briquette are mixed in proportion dry back and add in the big resistance furnace (8) in addition airtight, hot water boiler (6) water flowing, ventilating coal gas burning back produces water vapour, be transported in the A carbon resistance stove (7) by water vapour pipe (26), the furnace chamber that has refractory brick (4) and Graphite Electrodes (5) to be built in the resistance furnace, copper Conductive holding element (35) is connected with graphite carbon brick electrode (5) with conductive copper wire (3), and connection electric arc transformer (2) and control panel (1) and power supply, electric energy is warmed up to the coke briquette in the A carbon resistance stove more than 880 ℃, produces decomposition reaction with water vapour and generates water-gas H
2O steam+C=H
2+ CO, be conveyed in the furnace chamber of big resistance furnace (8) by water gas pipe (26) again, the identical A carbon resistance stove of big resistance furnace, but what packed into by hopper (22) in the stove is pellet and coke briquette, with electric energy coke briquette in the stove and pellet are warmed up to 1000-1050 ℃, the hydrogen H in the water-gas equally
2At high temperature remove to replace the Sauerstoffatom in the magnesium oxide in the high temperature pellet, generate water vapour and liquid magnesium, slag and coal gas, liquid magnesium is flowed in the B magnesium resistance furnace by liquid magnesium pipe (28), slag is regularly discharged by slag notch (30), water vapour, coal gas and dust together by vacuum fan (14) in flue dust pipe suction fly-ash separator (11), the dedusting of depotition cock (24) water spray, the hole of dividing plate (23) is repeatedly mixed flue dust and water and is obtained lowering the temperature dust separating effect, dust is discharged by slag-drip opening (30), the back is transported to the user by gas pipe (32) in the coal gas suction gas chamber (33), liquid magnesium flows into and identically with other resistance furnace behind the B magnesium resistance furnace with electric energy liquid state to be warmed up to 1120-1180 ℃ and to be distilled into magnesium vapor, all temperature datas all show temperature control in addition by pyrometer (37), magnesium vapor is conveyed into by magnesium vapor pipe (16) and is cooled to liquid back in the magnesium condenser (13) and becomes solid-state magnesium, and closed is packed into and dispatched from the factory into product behind the smart magnesium bucket (38).
2. as claimed in claim 1ly a kind ofly directly smelt into smart magnesium method with the magnesium oxide ore deposit, it is characterized in that: after water advanced hot water boiler (6), fuel gas buring boi1er tube (29) was warmed up to more than 100 ℃ behind the water vapour again in water vapour pipe (26) is carried the end furnace chamber of A carbon resistance stove.
3. a kind of magnesium oxide as claimed in claim 2 ore deposit directly smelts into smart magnesium method, it is characterized in that: after water vapour enters A carbon resistance stove, resistance furnace rolls into round tube type by steel plate (9), go up by adding carbon bucket (19), lid (21) is formed with valve (20), coke briquette after the preheating adds the furnace chamber from carbon bucket (19) closed, furnace chamber is built by refractory brick (4) and stone black electrode (5) volume and is formed, having thermal insulation layer (10) outer more outward is steel plate (9), Graphite Electrodes (5) and copper Conductive holding element (35), conductive copper wire (3), arc furnace transformer (2), control panel (1) connects into an energising body with power supply, behind the control panel switch open, Graphite Electrodes (5) forms loop current with the coke briquette energising, coke briquette is warmed up to more than 880 ℃, and water vapour and pyrocarbon layer produce decomposition reaction and generate water-gas H
2O steam+C=H
2+ CO, water-gas is in gas pipe (26) is transported to big resistance furnace (8) chamber.
4. as claimed in claim 3ly a kind ofly become smart magnesium method with the direct smelting in magnesium oxide ore deposit, it is characterized in that: water-gas is by after advancing gas pipe (26) and sending into big resistance furnace (8), furnace chamber is the same with other resistance furnace also by refractory brick (4), Graphite Electrodes (5) is formed, Graphite Electrodes (5) and copper Conductive holding element (35), furnace transformer (2) and control panel (1) are communicated with power supply, behind control panel (1) switch open, furnace chamber inner tissue loop, coke briquette, 1000-1050 ℃ of pellet intensification, Sauerstoffatom in the magnesium oxide ore deposit in the pellet is cemented out by hydrogen atom in the high-temperature water gas, smelt liquid crude magnesium, H
2+ MgO=H
2O steam+Mg liquid flows in the B magnesium resistance furnace from the liquid magnesium pipe (28) of furnace bottom, water vapour, flue dust and coal gas, are gone out pipe (32) output by coal gas in the coal gas suction gas chamber (33) and utilize after flue dust pipe (27) suction fly-ash separator (11) dedusting by vacuum fan (14).
5. as claimed in claim 4ly a kind ofly become smart magnesium method with the direct smelting in magnesium oxide ore deposit, it is characterized in that being: after liquid magnesium flows in the B magnesium resistance furnace, the structure of resistance furnace is all identical, with electric energy liquid magnesium is heated up, show temperature control in addition by pyrometer (37), to 1120-1180 ℃, being distilled into gaseous magnesium is transported in the magnesium condenser (13) by magnesium vapor pipe (16) and cools to gradually below 100 ℃, be cooled to liquid magnesium, solid-state magnesium, in the airtight smart magnesium bucket (38) of packing into, transport into product, finish the whole process of smelting smart magnesium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610020840XA CN100400686C (en) | 2006-05-18 | 2006-05-18 | Magnesium-refined smelting method by resistance furnace |
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| CNB200610020840XA CN100400686C (en) | 2006-05-18 | 2006-05-18 | Magnesium-refined smelting method by resistance furnace |
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| CN100400686C true CN100400686C (en) | 2008-07-09 |
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| CN102286653A (en) * | 2010-06-18 | 2011-12-21 | 赖成章 | Method for smelting high-titanium slag by inputting hydrogen with intermediate-frequency furnace |
| CN106337137A (en) * | 2015-08-03 | 2017-01-18 | 赖成章 | Novel zinc smelting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102273A (en) * | 1985-04-01 | 1986-09-17 | 郑州轻金属研究所 | The method of Magnesium Chloride Anhydrous is produced in the chlorination of magnesite pelletizing |
| CN1049381A (en) * | 1990-01-25 | 1991-02-20 | 颜志明 | Obtaining metal magnesium with vacuum-thermal method by burning magnesite slightly in magnesite |
| CN1042841C (en) * | 1996-03-22 | 1999-04-07 | 于洪喜 | Pipe type thermal method magnesium-smelting production technology and equipment |
| CN1584076A (en) * | 2004-06-04 | 2005-02-23 | 郭清富 | Method for preparing magnesium with silica-alumina alloy as electronating agent |
| CN1769505A (en) * | 2005-10-08 | 2006-05-10 | 昆明理工大学 | Vacuum, heat and coal reduction method for extracting metal magnesium from magnesium oxide ore |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102273A (en) * | 1985-04-01 | 1986-09-17 | 郑州轻金属研究所 | The method of Magnesium Chloride Anhydrous is produced in the chlorination of magnesite pelletizing |
| CN1049381A (en) * | 1990-01-25 | 1991-02-20 | 颜志明 | Obtaining metal magnesium with vacuum-thermal method by burning magnesite slightly in magnesite |
| CN1042841C (en) * | 1996-03-22 | 1999-04-07 | 于洪喜 | Pipe type thermal method magnesium-smelting production technology and equipment |
| CN1584076A (en) * | 2004-06-04 | 2005-02-23 | 郭清富 | Method for preparing magnesium with silica-alumina alloy as electronating agent |
| CN1769505A (en) * | 2005-10-08 | 2006-05-10 | 昆明理工大学 | Vacuum, heat and coal reduction method for extracting metal magnesium from magnesium oxide ore |
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