CN102534200A - Method using microwave sintering to extract molybdenum in nickel molybdenum ore - Google Patents
Method using microwave sintering to extract molybdenum in nickel molybdenum ore Download PDFInfo
- Publication number
- CN102534200A CN102534200A CN2012100897198A CN201210089719A CN102534200A CN 102534200 A CN102534200 A CN 102534200A CN 2012100897198 A CN2012100897198 A CN 2012100897198A CN 201210089719 A CN201210089719 A CN 201210089719A CN 102534200 A CN102534200 A CN 102534200A
- Authority
- CN
- China
- Prior art keywords
- microwave
- nickel
- sintering
- kiln body
- molybdenum ore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a method using microwave sintering to extract molybdenum in nickel molybdenum ore, which resolves the problem that the molybdenum recycling rate is low. The method comprises the following steps of (1) burdening and mixing materials, mixing nickel molybdenum ore powder materials with chemical reagents composed of one or two of anhydrous Na2CO3, anhydrous NaOH and anhydrous NaHCO3 to obtain mixed powdery materials; (2) sintering, placing powdery materials in a microwave sintering furnace to be roasted with the microwave utilization frequency of 2.45GHz and microwave total power of 1.5kW to 180kW; and (3) water leaching, placing roasted clinker obtained in the step (2) in water to be leached, and filtering to achieve filter liquid and filter residue which are respectively to be reserved for detection. The method is high in molybdenum recycling rate, short in sintering time, capable of saving energy and high in production efficiency.
Description
Technical field
The present invention relates to the Non-ferrous Metallurgy field, specifically, be the sintering method that a kind of microwave sintering process is handled nickel-molybdenum ore, and then effectively extract the valuable metal molybdenum.
Background technology
A kind of " dawk type " nickel-molybdenum ore mineral deposit is extensively distributing in areas such as the southern Hunan of China, Guangdong and Guangxi Provinces and Yunnan-Guizhou; This type Mineral resources carbon content is up to 10% ~ 20%; And association has tens of kinds of low-grade valuable metal element and a large amount of gangues that exist with forms such as sulfide, oxide compounds; Molybdenum mainly exists with the gluey sulfide of the complicated amorphous carbonaceous of occurrence status, causes present multiple traditional selecting metallurgical method to be difficult to it is realized that efficiently and effectively reclaims.
Present existing treatment process mainly comprises; Full hydrometallurgical processes, roasting-leaching integrated process, select traditional method such as smelting combination; Liu Mei its paper " in the nickelous sulfide molybdenum ore intensified leaching process of nickel research " (see magazine-mining and metallurgy, 2011,20 (3): 72 ~ 75) public use the soda ash light roasting method nickel-molybdenum ore is handled; Its sintering process is respectively at 560 ℃ of following roasting 6h; Bubbling air in the roasting process, every 30min stirs once, is warming up to 650 ℃ of following roasting 1.5h again.Total sintering period reaches 7.5h, and the recovery of molybdenum is merely 95.43% behind the water logging roasting grog, problem such as exist the comprehensive recovery of valuable element low, sintering time is long and the subsequent disposal workload is big.
Summary of the invention
Deficiency to the existence of existing conventional sintering technology; The present invention aims to provide a kind of quick, efficient, energy-conservation; Be easy to obtain good sintering effect, can significantly shorten the production cycle, be easy to realize that the microwave sintering processing nickel-molybdenum ore of scale prodn reclaims the method for molybdenum simultaneously again.
To achieve these goals, the technical scheme that the present invention adopted is: said microwave sintering is handled the method for nickel-molybdenum ore, comprises the steps:
1) batching and batch mixing; With the nickel-molybdenum ore powder mix with chemical reagent pulverulent material, the mass ratio of said chemical reagent and nickel-molybdenum ore is 0.1 ~ 1.3; Said chemical reagent is by anhydrous Na
2CO
3, anhydrous Na OH, anhydrous Na HCO
3In one or both compositions;
2) sintering; The pulverulent material that step 1) is mixed places the microwave sintering kiln roasting, and said microwave frequency of utilization is 2.45GHz, and the microwave total power is 1.5 kW ~ 180 kW;
3) water logging; With step 2) in the roasting grog that obtains place water to carry out water logging, its liquid-solid mass ratio is 3:1 ~ 6:1,70 ℃ ~ 90 ℃ of temperature, extraction time 1h ~ 4h must filtrate and filter residue after the filtration, respectively redundant detection.
The mass ratio of said chemical reagent and nickel-molybdenum ore is preferably 0.8 ~ 1.
As another kind of concrete structure; The structure of said microwave agglomerating furnace does; Comprise the microwave source that is located at the body of heater both sides, the body of heater upper end is provided with the vapor pipe that is communicated with furnace chamber, and the body of heater lower end is provided with the inlet pipe that is communicated with furnace chamber; This inlet pipe the other end is provided with a plurality of atmosphere inlets, and each atmosphere inlet is corresponding continuous with different atmosphere feedwaies respectively; During sintering, rise to 600 ℃ ~ 800 ℃ with the temperature of pulverulent material is disposable, be incubated 0.5h ~ 3h then with the heat-up rate of 2 ℃/min ~ 20 ℃/min; After insulation finishes, when treating that furnace temperature ventilation exhausting is cooled to below 100 ℃, that roasting grog taking-up grinding back is subsequent use.
As another kind of concrete structure; The structure of said microwave agglomerating furnace also can for; Comprise main kiln body, be arranged on the microwave transmission system that main kiln body both sides are used for launched microwave, form the slalom course mechanism of closed cycle, the roller-way power system that is arranged on main kiln body bottom, a plurality of chain open and close system of fire door of opening closure with the turnover of control material capable of circulation with main kiln body; Said main kiln body is linked in sequence by draining section, preheating section, sintering stage, holding-zone, quench zone and slow cooling section and forms, and said slalom course mechanism mainly section is made up of dress unloading part and the oven dry of UTILIZATION OF VESIDUAL HEAT IN blank; Said slalom course mechanism comprises slalom course; This slalom course is provided with the slalom course roller-way; The power system of being made up of variator and speed reduction unit is housed in the end of this slalom course; This power system can be delivered to main kiln body inlet with dialling on the slalom course from the push pedal of main kiln body outlet after UTILIZATION OF VESIDUAL HEAT IN blank oven dry section; The inner chamber bottom surface of said main kiln body is provided with the interior roller-way that is used to transmit the material push pedal that is driven by said roller-way power system; During sintering, pulverulent material is exported through being transported to kiln behind preheating section, sintering stage, holding-zone, quench zone and the slow cooling section respectively from the kiln inlet; The temperature of said preheating section is from 30 ℃ to 400 ℃, the temperature of sintering stage from 400 ℃ to 600 ℃ ~ 800 ℃, the temperature of holding-zone is 600 ℃ ~ 800 ℃, the temperature of quench zone is reduced to 400 ℃ from 600 ℃ ~ 800 ℃, the temperature of slow cooling section is reduced to 100 ℃ from 400 ℃; The pulverulent material time of passage through kiln is 3 min ~ 5 min, treats that material arrives the kiln exit, and is subsequent use after the taking-up of roasting grog is ground.
Further; The structure of said roller-way power system does, is located at the motor of main kiln body bottom one end, and the output terminal of this motor and a rectangle screw rod link; This rectangle screw rod passes a pusher and cooperates with this pusher; This pusher lower end can be moved along a guide-track groove, and the other end of said rectangle screw rod is contained in the chock, and said pusher drives said push pedal.
Said kiln length overall is preferably 30 meters.
Further; The draining section of said main kiln body, preheating section, sintering stage, holding-zone, quench zone bottom are provided with ventilating pit; This ventilating pit diameter is 10mm-30mm; Distance between adjacent two ventilating pits is 200mm-500mm, and the atmosphere regulation system that said ventilating pit and is regulated atmosphere in the main kiln body is connected.
Further; The upper surface of said main each section of kiln body is provided with venting hole; The diameter of this venting hole is 50mm-150mm, and the width between centers between adjacent two venting holes is 80mm-150mm, and the exhaust gas cleaning system that the venting hole of said draining section and is removed tail gas is connected; The venting hole of said slow cooling section is connected with UTILIZATION OF VESIDUAL HEAT IN blank oven dry section, and the atmosphere regulation system that the venting hole of said preheating section and is regulated atmosphere in the main kiln body is connected.
Thus, microwave sintering according to the invention is handled the method for nickel-molybdenum ore, and its process step is following:
1) batching and batch mixing; With nickel-molybdenum ore powder and anhydrous Na
2CO
3, NaOH, NaHCO
3In one or both chemical reagent that use simultaneously be raw material, be 0.1 ~ 1.3 to prepare burden according to chemical reagent/nickel-molybdenum ore mass ratio, then the raw material that measures is put into ceramic saggar or ceramic crucible, and mixes.
2) sintering; The pulverulent material that step 1) is mixed adopts the continuous-type microwave high temperature roller-way sintering kiln of multifunction microwave agglutinating test stove that Chinese patent CN201020666308.7 announces and application number 201010594113.0 announcements as agglomerating plant respectively; Be characterized in that first kind of equipment is the static sintering of intermittent type; Second kind of equipment is the continous way dynamic sinter; The microwave frequency of utilization is 2.45GHz, and the microwave total power is 1.5 kW ~ 180 kW.
When carrying out sintering by first kind of equipment, with the heat-up rate of 2 ℃ ~ 20 ℃/min temperature of charge is once risen to 600 ℃ ~ 800 ℃, soaking time is 0.5 h ~ 3 h, need not material is stirred in the whole process.After insulation finishes, when treating that furnace temperature ventilation exhausting is cooled to below 100 ℃, can roasting grog taking-up grinding back is subsequent use.
When carrying out sintering by second kind of equipment; The sintering process of material is dynamic; And be filled in the saggar of 320mm * 320mm * 70mm, 30 meters of kiln length overalls are set 30 ℃ from advancing the kiln temperature in; Respectively through 30 ℃ ~ 400 ℃ of preheating zones, 400 ℃ ~ 600 ℃/800 ℃ of heating zones; 600 ℃/800 ℃ of sintering zones, plunge 600 ℃/800 ℃ ~ 400 ℃ of warm areas and 400 ~ 100 ℃ of cooling areas carry out sintering with the translational speed of 3 min ~ every saggar of 5 min to material, need not material is stirred in the whole process.Treat that material moves to the exit from kiln, subsequent use after can the taking-up of roasting grog being ground.
3) water logging; With step 2) the middle roasting grog that obtains, by liquid-solid ratio 3:1 ~ 6:1,80 ℃ of temperature, extraction time 2h carries out water logging, must filtrate and filter residue after the filtration, and redundant detection is extracted the valuable metal molybdenum respectively.
Utilization of the present invention is processed that material self absorbs behind the microwave energy and whole heating; The characteristics that capacity usage ratio is high; Utilize the basic fine structure coupling of special wave band that microwave has and material and produce heat; The dielectric loss of material makes its material monolithic be heated to sintering temperature, is fast energy-saving sintering, synthetic new technology.For nickel-molybdenum ore, himself contain the mineral and the ferruginous mineral of a large amount of carbon and sulphur, these materials have bigger specific inductivity, be the good cartridge of microwave, so dielectric loss are bigger.
Compared with prior art, the invention has the beneficial effects as follows:
(1) the present invention adopts industrial microwave sintering method and high-temperature sintering apparatus thereof, can make the whole heat-agglomerating simultaneously of material self, and rate of heating is fast, and the nickel-molybdenum ore that is processed is heated evenly from the inside to the outside, and need not to stir very thorough that sintering is carried out.
(2) microwave sintering of the present invention can accurately be controlled, and heat-up rate is fast, and the sintering processes nickel-molybdenum ore time only needs just can accomplish within 1h ~ 3h, and traditional sintering needs about 7h ~ 8h, has shortened sintering time greatly, and save energy is enhanced productivity.
(3) microwave sintering method that the present invention adopted is than traditional method, and metal recovery rate is high, and molybdenum recovery can reach more than 99%, and nickel all is enriched in the slag.
(4) the present invention adopts continuous-type microwave high temperature roller-way sintering oven as agglomerating plant, is easy to realize large-scale industrial production.
Below in conjunction with accompanying drawing and embodiment the present invention is done further elaboration.
Description of drawings
Fig. 1 is the structure principle chart of a kind of microwave agglomerating furnace of the present invention;
Fig. 2 is the structure principle chart of the another kind of microwave agglomerating furnace of the present invention;
Fig. 3 is the structural representation of roller-way power system according to the invention;
Fig. 4 is an exhaust gas cleaning system structural representation of the present invention;
Fig. 5 is the structural representation of atmosphere regulation system of the present invention.
In the drawings
1-master's kiln body; 2-slalom course mechanism; The 3-microwave transmission system; 4-roller-way power system;
The chain open and close system of 5-fire door; 6-draining section; The 7-preheating section; The 8-sintering stage; The 9-holding-zone;
The 10-quench zone; The 11-slow cooling section; 12-adorns unloading part; 13-UTILIZATION OF VESIDUAL HEAT IN blank oven dry section; The 14-slalom course;
15-slalom course roller-way; The 16-power system; The 17-push pedal; Roller-way in the 18-; The 19-ventilating pit;
20-atmosphere regulation system; 21-versatile spindle bearing; The 22-pusher; The 23-push pedal; 24-rectangle screw rod;
The 25-motor; The 27-guide-track groove; The 30-exhaust gas cleaning system; The 31-exhaust emission tube; The 32-shower nozzle;
The 33-vacuum fan; The 34-pipeline; 35-first purge chamber; 36-second purge chamber;
The 40-microwave warning device that leaks hunting; The 42-venting hole; 43-roller rod; The 44-microwave suppresses fire door; 45-thermometric port;
The 50-bootstrap system; The 51-interlayer; 60-observing and controlling temperature system; The 72-exhaust system; The 73-vapor pipe;
The 75-inlet system; The 76-inlet pipe; 77-air inlet threeway; The 80-furnace chamber; The 81-microwave source;
The 82-vapor pipe; The 83-inlet pipe; The 84-inlet system.
Embodiment
Embodiment 1:
The employing raw material is an anhydrous Na
2CO
3With the nickel-molybdenum ore powder, wherein the nickel-molybdenum ore composition is a molybdenum content 5.34%, nickel content 2.53%, W content 0.21%, iron level 11.87%, sulphur content 12.32%, C content 15.89%.
The process step of present embodiment is following:
(1) batching and batch mixing
According to anhydrous Na
2CO
3With the mass ratio of nickel-molybdenum ore be that 0.8:1 prepares burden, accurate weighing anhydrous Na respectively
2CO
3Be 1.5Kg, the nickel-molybdenum ore powder is 1.875kg, then the raw material that measures is put into ceramic crucible and mixes.
(2) sintering
The pulverulent material that step 1) is mixed adopts microwave agglomerating furnace to carry out static sintering, with the heat-up rate of 10 ℃/min temperature of charge is once risen to 650 ℃, and the sintered heat insulating time is 2h, need not material is stirred in the whole process.After insulation finishes, when treating that furnace temperature ventilation exhausting is cooled to below 100 ℃, can roasting grog taking-up grinding back is subsequent use.
(3) water logging
With step 2) the middle roasting grog that obtains, by liquid-solid ratio 5:1,80 ℃ of temperature, extraction time 2h carries out water logging, must filtrate and filter residue after the filtration.Detected result shows that the recovery of molybdenum is 99.5%, and nickel all is enriched in the leached mud.
In the present embodiment; Said microwave agglomerating furnace is like the disclosed multifunction microwave agglutinating test of Chinese patent CN201020666308.7 stove; Concrete structure is as shown in Figure 1; Comprise the microwave source 81 that is located at the body of heater both sides, surround the outer cooling sandwith layer of body of heater, said cooling sandwith layer lower end is provided with heat-eliminating medium inlet and media outlet.Said body of heater upper end is provided with the vapor pipe that is communicated with furnace chamber 80, and the body of heater lower end is provided with the inlet pipe 83 that is communicated with furnace chamber 80, and said inlet pipe 83 is provided with the inlet system of being made up of gas meter and valve.These inlet pipe 83 the other ends are provided with three atmosphere inlets, are respectively nitrogen inlet, dry air inlet and argon gas inlet, and each atmosphere inlet is corresponding continuous with different atmosphere feedwaies respectively.In sintered products, can utilize the atmosphere inlet to supply with different gas according to Different products.
Embodiment 2:
Adopting raw material is anhydrous Na OH and nickel-molybdenum ore powder, and the composition of nickel-molybdenum ore is with embodiment 1.
(1) batching and batch mixing
According to anhydrous Na OH and nickel-molybdenum ore mass ratio is that 0.6:1 prepares burden, and accurately weighing anhydrous Na OH is 1.5 Kg respectively, and the nickel-molybdenum ore powder is 3.33 kg, then the raw material that measures is put into ceramic crucible and mixes.
(2) sintering
The agglomerating plant that adopts is with embodiment 1, with the heat-up rate of 20 ℃/min temperature of charge once risen to 700 ℃, and soaking time 1.5h need not material is stirred in the whole process.After insulation finishes, when treating that furnace temperature ventilation exhausting is cooled to below 100 ℃, can roasting grog taking-up grinding back is subsequent use.
(3) water logging
With step 2) the middle roasting grog that obtains, by liquid-solid ratio 4:1,80 ℃ of temperature, extraction time 2h carries out water logging, must filtrate and filter residue after the filtration.Detected result shows that the recovery of molybdenum is 97.3%, and nickel all is enriched in the leached mud.
Embodiment 3:
Adopt the nickel-molybdenum ore composition with embodiment 1, wherein chemical reagent is by anhydrous Na
2CO
3Form anhydrous Na with anhydrous Na OH
2CO
3The quality percentage composition is 70%, and anhydrous Na OH quality percentage composition is 30%, is that 0.8:1 prepares burden according to the mass ratio of chemical reagent and nickel-molybdenum ore, respectively accurate weighing anhydrous Na
2CO
3With anhydrous Na OH mixture 1.5Kg, the nickel-molybdenum ore powder is 1.875kg, then the raw material that measures is put into ceramic crucible and mixes, and all the other conditions are all identical with embodiment 1.Detected result shows that the recovery of molybdenum is 98.2%, and nickel all is enriched in the leached mud.
Embodiment 4:
Adopt nickel-molybdenum ore with embodiment 1, wherein chemical reagent is by anhydrous Na
2CO
3With anhydrous Na HCO
3Form anhydrous Na
2CO
3The quality percentage composition is 50%, anhydrous Na HCO
3The quality percentage composition is 50%, is that 0.8:1 prepares burden according to the mass ratio of chemical reagent and nickel-molybdenum ore, respectively accurate weighing anhydrous Na
2CO
3With anhydrous Na HCO
3Mixture 1.5Kg, nickel-molybdenum ore powder are 1.875kg, then the raw material that measures are put into ceramic crucible and mix, and all the other conditions are all identical with embodiment 1.Detected result shows that the recovery of molybdenum is 99.2%, and nickel all is enriched in the leached mud.
Embodiment 5:
The employing raw material is an anhydrous Na
2CO
3With the nickel-molybdenum ore powder, wherein the nickel-molybdenum ore composition is a molybdenum content 3.76%, nickel content 2.15%, W content 0.17%, iron level 13.65%, sulphur content 15.27%, C content 14.56%.
The process step of present embodiment is following:
(1) batching and batch mixing
According to anhydrous Na
2CO
3With the nickel-molybdenum ore mass ratio be that 1:1 prepares burden, accurate weighing anhydrous Na respectively
2CO
3Be 1.5Kg, the nickel-molybdenum ore powder is 1.5kg, the raw material that measures is filled in the ceramic saggar of 320mm * 320mm * 70mm to mix then.
(2) sintering
The pulverulent material that step 1) is mixed adopts microwave agglomerating furnace to carry out dynamic sinter.Advance the kiln temperature in and set 30 ℃; Respectively through 30 ℃ ~ 400 ℃ of preheating zones, 400 ℃ ~ 650 ℃ of heating zones, 650 ℃ in sintered heat insulating district, 400 ~ 100 ℃ of 650 ℃ of warm areas and cooling areas plunge; Translational speed with the every saggar of 5min is carried out sintering to material, need not material is stirred in the whole process.Treat that material moves to the exit from kiln, subsequent use after can the taking-up of roasting grog being ground.
(3) water logging
The water logging condition is with embodiment 1.Detected result shows that the recovery of molybdenum is 99.6%, and nickel all is enriched in the leached mud.
In the present embodiment; The total closed type technical grade microwave high-temperature roller-way stoking kiln that said microwave agglomerating furnace is announced for Chinese patent CN201010594113.0; Shown in Fig. 2 ~ 5, its concrete structure comprises main kiln body 1, be arranged on microwave transmission system 3 that main kiln body 1 both sides are used for launched microwave, form the slalom course mechanism 2 of closed cycle, the roller-way power system 4 that is arranged on main kiln body 1 bottom, a plurality of chain open and close system 5 of fire door of opening closed turnover with the control material capable of circulation with main kiln body 1; Said main kiln body 1 is linked in sequence by draining section 6, preheating section 7, sintering stage 8, holding-zone 9, quench zone 10 and slow cooling section 11 and forms, and said slalom course mechanism 2 mainly is made up of dress unloading part 12 and UTILIZATION OF VESIDUAL HEAT IN blank oven dry section 13; Said slalom course mechanism 2 comprises slalom course 14; This slalom course 14 is provided with slalom course roller-way 15; The power system of being made up of variator and speed reduction unit 16 is housed in the end of this slalom course 14; This power system 16 can be delivered to main kiln body 1 inlet with dialling on the slalom course 14 from the push pedal 17 of main kiln body 1 outlet after UTILIZATION OF VESIDUAL HEAT IN blank oven dry section 13; The inner chamber bottom surface of said main kiln body 1 is provided with the interior roller-way 18 that is used to transmit material push pedal 17 that is driven by said roller-way power system 4; As shown in Figure 3; The structure of said roller-way power system does, is located at the motor 25 of main kiln body 1 bottom one end, and the output terminal of this motor 25 and a rectangle screw rod 24 link; This rectangle screw rod 24 passes a pusher 22 and cooperates with this pusher 22; These pusher 22 lower ends can be moved along a guide-track groove 27, and the other end of said rectangle screw rod 24 is contained in the versatile spindle bearing 21, and said pusher 22 drives said push pedal 17.The structure of said roller-way power system does; Be located at the motor 25 of main kiln body 1 bottom one end; The output terminal of this motor 25 and a rectangle screw rod 24 link, and this rectangle screw rod 24 passes a pusher 22 and cooperates with this pusher 22, and these pusher 22 lower ends can be moved along a guide-track groove 27; The other end of said rectangle screw rod 24 is contained in the chock 21, and said pusher 22 drives said push pedal 17.30 meters of said kiln length overalls.The draining section 6 of said main kiln body 1, preheating section 7, sintering stage 8, holding-zone 9, quench zone 10 bottoms are provided with ventilating pit 19; These ventilating pit 19 diameters are 10mm-30mm; Distance between adjacent two ventilating pits is 200mm-500mm, and the atmosphere regulation system 20 that said ventilating pit 19 and is regulated atmosphere in the main kiln body 1 is connected.The upper surface of said main kiln body 1 each section is provided with venting hole 42; The diameter of this venting hole 42 is 50mm-150mm; Width between centers between adjacent two venting holes is 80mm-150mm, and the exhaust gas cleaning system 30 that the venting hole 42 of said draining section 6 and is removed tail gas is connected; The venting hole 42 of said slow cooling section 11 is connected with UTILIZATION OF VESIDUAL HEAT IN blank oven dry section 13, and the atmosphere regulation system 20 that the venting hole of said preheating section 7 and is regulated atmosphere in the main kiln body 1 is connected.
Embodiment 6:
The chemical reagent that adopts is anhydrous Na OH, and the nickel-molybdenum ore composition is with embodiment 5.
The process step of present embodiment is following:
(1) batching and batch mixing
According to anhydrous Na OH/ nickel-molybdenum ore mass ratio is that 0.8:1 prepares burden, and accurately weighing anhydrous Na OH is 1.5Kg respectively, and the nickel-molybdenum ore powder is 1.875kg, and the ceramic saggar of then raw material that measures being put into 320mm * 320mm * 70mm mixes.
(2) sintering
Used agglomerating plant is with embodiment 5.Advance the kiln temperature in and set 30 ℃; Respectively through 30 ℃ ~ 400 ℃ of preheating zones, 400 ℃ ~ 700 ℃ of heating zones; 700 ℃ in sintered heat insulating district; Plunge 700 ℃ ~ 400 ℃ of warm areas and 400 ℃ ~ 100 ℃ of cooling areas carry out sintering with the translational speed of the every saggar of 3min to material, need not material is stirred in the whole process.Treat that material moves to the exit from kiln, subsequent use after can the taking-up of roasting grog being ground.
(3) water logging
The water logging condition is with embodiment 2, and detected result shows that the recovery of molybdenum is 96.6%, and nickel all is enriched in the leached mud.
Embodiment 7:
Adopt nickel-molybdenum ore with embodiment 5, wherein chemical reagent is by anhydrous Na
2CO
3Form anhydrous Na with anhydrous Na OH
2CO
3The quality percentage composition is 70%, and anhydrous Na OH quality percentage composition is 30%, is that 1:1 prepares burden according to chemical reagent and nickel-molybdenum ore mass ratio, respectively accurate weighing anhydrous Na
2CO
3With the mixture 1.5Kg of anhydrous Na OH, the nickel-molybdenum ore powder is 1.5kg, the raw material that measures is filled in the ceramic saggar of 320mm * 320mm * 70mm to mix then, and all the other conditions are all identical with embodiment 5.Detected result shows that the recovery of molybdenum is 98.7%, and nickel all is enriched in the leached mud.
Embodiment 8:
Adopt nickel-molybdenum ore with embodiment 5, wherein chemical reagent is by anhydrous Na
2CO
3With anhydrous Na HCO
3Form anhydrous Na
2CO
3The quality percentage composition is 50%, anhydrous Na HCO
3The quality percentage composition is 50%, is that 1:1 prepares burden according to chemical reagent and nickel-molybdenum ore mass ratio, respectively accurate weighing anhydrous Na
2CO
3With anhydrous Na HCO
3Mixture 1.5Kg, the nickel-molybdenum ore powder is 1.5kg, the raw material that measures is filled in the ceramic saggar of 320mm * 320mm * 70mm to mix then, all the other conditions are all identical with embodiment 5.Detected result shows that the recovery of molybdenum is 99.4%, and nickel all is enriched in the leached mud.
The content that the foregoing description is illustrated is to be understood that to these embodiment and only is used to be illustrated more clearly in the present invention; And be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Claims (7)
1. the method for a microwave sintering processing nickel-molybdenum ore is characterized in that, comprises the steps:
1) batching and batch mixing; With the nickel-molybdenum ore powder mix with chemical reagent pulverulent material, the mass ratio of said chemical reagent and nickel-molybdenum ore is 0.1 ~ 1.3; Said chemical reagent is by anhydrous Na
2CO
3, anhydrous Na OH, anhydrous Na HCO
3In one or both compositions;
2) sintering; The pulverulent material that step 1) is mixed places the microwave sintering kiln roasting, and said microwave frequency of utilization is 2.45GHz, and the microwave total power is 1.5 kW ~ 180 kW;
3) water logging; With step 2) in the roasting grog that obtains place water to carry out water logging, its liquid-solid mass ratio is 3:1 ~ 6:1,70 ℃ ~ 90 ℃ of temperature, extraction time 1h ~ 4h must filtrate and filter residue after the filtration, respectively redundant detection.
2. microwave sintering according to claim 1 is handled the method for nickel-molybdenum ore; It is characterized in that the structure of said microwave agglomerating furnace is to comprise the microwave source (81) that is located at the body of heater both sides; The body of heater upper end is provided with the vapor pipe (82) that is communicated with furnace chamber (80); The body of heater lower end is provided with the inlet pipe (83) that is communicated with furnace chamber (80), and this inlet pipe (83) the other end is provided with a plurality of atmosphere inlets, and each atmosphere inlet is corresponding continuous with different atmosphere feedwaies respectively; During sintering, rise to 600 ℃ ~ 800 ℃ with the temperature of pulverulent material is disposable, be incubated 0.5h ~ 3h then with the heat-up rate of 2 ℃/min ~ 20 ℃/min; After insulation finishes, when treating that furnace temperature ventilation exhausting is cooled to below 100 ℃, that roasting grog taking-up grinding back is subsequent use.
3. microwave sintering according to claim 1 is handled the method for nickel-molybdenum ore; It is characterized in that; The structure of said microwave agglomerating furnace does; Comprise main kiln body (1), be arranged on the microwave transmission system (3) that main kiln body (1) both sides are used for launched microwave, form the slalom course mechanism (2) of closed cycle, the roller-way power system (4) that is arranged on main kiln body (1) bottom, a plurality of chain open and close system of fire door (5) of opening closure with the turnover of control material capable of circulation with main kiln body (1); Said main kiln body (1) is linked in sequence by draining section (6), preheating section (7), sintering stage (8), holding-zone (9), quench zone (10) and slow cooling section (11) and forms, and said slalom course mechanism (2) mainly is made up of dress unloading part (12) and UTILIZATION OF VESIDUAL HEAT IN blank oven dry section (13); Said slalom course mechanism (2) comprises slalom course (14); This slalom course (14) is provided with slalom course roller-way (15); The power system of being made up of variator and speed reduction unit (16) is housed in the end of this slalom course (14); This power system (16) can be delivered to main kiln body (1) inlet with dialling on the slalom course (14) from the push pedal (17) of main kiln body (1) outlet after UTILIZATION OF VESIDUAL HEAT IN blank oven dry section (13); The inner chamber bottom surface of said main kiln body (1) is provided with the interior roller-way (18) that is used to transmit material push pedal (17) that is driven by said roller-way power system (4); During sintering, pulverulent material is exported from being transported to kiln after kiln inlet passes through preheating section (7), sintering stage (8), holding-zone (9), quench zone (10) and slow cooling section (11) respectively; The temperature of said preheating section (7) is from 30 ℃ to 400 ℃; The temperature of sintering stage (8) from 400 ℃ to 600 ℃ ~ 800 ℃; The temperature of holding-zone (9) is 600 ℃ ~ 800 ℃; The temperature of quench zone (10) is reduced to 400 ℃ from 600 ℃ ~ 800 ℃, and the temperature of slow cooling section (11) is reduced to 100 ℃ from 400 ℃; The pulverulent material time of passage through kiln is 3 min ~ 5 min, treats that material arrives the kiln exit, and is subsequent use after the taking-up of roasting grog is ground.
4. microwave sintering according to claim 3 is handled the method for nickel-molybdenum ore; It is characterized in that; The structure of said roller-way power system does, is located at the motor (25) of main kiln body (1) bottom one end, and an output terminal of this motor (25) and a rectangle screw rod (24) link; This rectangle screw rod (24) passes a pusher (22) and cooperates with this pusher (22); This pusher (22) lower end can be moved along a guide-track groove (27), and the other end of said rectangle screw rod (24) is contained in the chock (21), and said pusher (22) drives said push pedal (17).
5. microwave sintering according to claim 3 is handled the method for nickel-molybdenum ore, it is characterized in that 30 meters of said kiln length overalls.
6. microwave sintering according to claim 3 is handled the method for nickel-molybdenum ore; It is characterized in that; The draining section (6) of said main kiln body (1), preheating section (7), sintering stage (8), holding-zone (9), quench zone (10) bottom are provided with ventilating pit (19); This ventilating pit (19) diameter is 10mm-30mm; Distance between adjacent two ventilating pits is 200mm-500mm, and the atmosphere regulation system (20) that said ventilating pit (19) and is regulated the interior atmosphere of main kiln body (1) is connected.
7. microwave sintering according to claim 3 is handled the method for nickel-molybdenum ore; It is characterized in that; The upper surface of each section of said main kiln body (1) is provided with venting hole (42); The diameter of this venting hole (42) is 50mm-150mm, and the width between centers between adjacent two venting holes is 80mm-150mm, and the exhaust gas cleaning system (30) that the venting hole (42) of said draining section (6) and is removed tail gas is connected; The venting hole (42) of said slow cooling section (11) is connected with UTILIZATION OF VESIDUAL HEAT IN blank oven dry section (13), and the atmosphere regulation system (20) that the venting hole of said preheating section (7) and is regulated the interior atmosphere of main kiln body (1) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100897198A CN102534200A (en) | 2012-03-30 | 2012-03-30 | Method using microwave sintering to extract molybdenum in nickel molybdenum ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100897198A CN102534200A (en) | 2012-03-30 | 2012-03-30 | Method using microwave sintering to extract molybdenum in nickel molybdenum ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102534200A true CN102534200A (en) | 2012-07-04 |
Family
ID=46342219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100897198A Pending CN102534200A (en) | 2012-03-30 | 2012-03-30 | Method using microwave sintering to extract molybdenum in nickel molybdenum ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102534200A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194623A (en) * | 2013-03-29 | 2013-07-10 | 嵩县开拓者钼业有限公司 | Method and device for purifying molybdenum concentrate |
| CN103884691A (en) * | 2014-04-03 | 2014-06-25 | 河南科技学院 | Method for leaching and measuring molybdenum metal in nickel-molybdenum ore |
| CN103952536A (en) * | 2014-04-21 | 2014-07-30 | 贵州华桂钼镍股份有限公司 | Sodium modification agent for processing nickel-molybdenum mines |
| CN107815535A (en) * | 2017-10-26 | 2018-03-20 | 中南大学 | A kind of method of microwave radiation exaraction molybdenum |
| CN113666767A (en) * | 2021-08-20 | 2021-11-19 | 新疆凯盛建材设计研究院（有限公司） | Method and system for statically sintering ceramsite by microwave |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457296A (en) * | 2008-10-17 | 2009-06-17 | 芜湖人本合金有限责任公司 | Method for recovering metallic oxide from waste aluminum base V-Mo-Ni catalyst |
| CN102042749A (en) * | 2010-12-17 | 2011-05-04 | 湖南航天工业总公司 | Fully-closed industrial microwave high-temperature roller continuous sintering kiln |
| CN201954962U (en) * | 2010-12-17 | 2011-08-31 | 湖南航天工业总公司 | Multifunctional microwave sintering test furnace |
| CN102230075A (en) * | 2011-06-20 | 2011-11-02 | 江苏大学 | Dephosphorizing process of molybdenum nickel ore |
-
2012
- 2012-03-30 CN CN2012100897198A patent/CN102534200A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457296A (en) * | 2008-10-17 | 2009-06-17 | 芜湖人本合金有限责任公司 | Method for recovering metallic oxide from waste aluminum base V-Mo-Ni catalyst |
| CN102042749A (en) * | 2010-12-17 | 2011-05-04 | 湖南航天工业总公司 | Fully-closed industrial microwave high-temperature roller continuous sintering kiln |
| CN201954962U (en) * | 2010-12-17 | 2011-08-31 | 湖南航天工业总公司 | Multifunctional microwave sintering test furnace |
| CN102230075A (en) * | 2011-06-20 | 2011-11-02 | 江苏大学 | Dephosphorizing process of molybdenum nickel ore |
Non-Patent Citations (3)
| Title |
|---|
| 刘美: "硫化钼镍矿加碱焙烧后钼镍的回收率分析", 《化学与黏合》, vol. 33, no. 02, 30 April 2011 (2011-04-30) * |
| 张刚等: "镍钼矿处理工艺的研究现状", 《稀有金属与硬质合金》, vol. 36, no. 04, 20 December 2008 (2008-12-20) * |
| 张文朴: "微波在稀贵金属冶金中的应用研究进展", 《稀有金属与硬质合金》, vol. 36, no. 02, 20 June 2008 (2008-06-20) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194623A (en) * | 2013-03-29 | 2013-07-10 | 嵩县开拓者钼业有限公司 | Method and device for purifying molybdenum concentrate |
| CN103194623B (en) * | 2013-03-29 | 2015-02-25 | 嵩县开拓者钼业有限公司 | Method and device for purifying molybdenum concentrate |
| CN103884691A (en) * | 2014-04-03 | 2014-06-25 | 河南科技学院 | Method for leaching and measuring molybdenum metal in nickel-molybdenum ore |
| CN103884691B (en) * | 2014-04-03 | 2016-05-18 | 河南科技学院 | Molybdenum leaching and assay method in a kind of nickel-molybdenum ore |
| CN103952536A (en) * | 2014-04-21 | 2014-07-30 | 贵州华桂钼镍股份有限公司 | Sodium modification agent for processing nickel-molybdenum mines |
| CN107815535A (en) * | 2017-10-26 | 2018-03-20 | 中南大学 | A kind of method of microwave radiation exaraction molybdenum |
| CN113666767A (en) * | 2021-08-20 | 2021-11-19 | 新疆凯盛建材设计研究院（有限公司） | Method and system for statically sintering ceramsite by microwave |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103822464B (en) | A kind of continous way mineral little material, powder hot industry microwave calcination stove | |
| CN102534200A (en) | Method using microwave sintering to extract molybdenum in nickel molybdenum ore | |
| WO2018000587A1 (en) | Vacuum induction furnace, electric arc furnace vacuum magnesium refining system and magnesium refining method thereof | |
| CN108972865B (en) | Operation method of rotary waste incineration fly ash microwave sintered ceramsite | |
| CN103447148B (en) | Microwave reduction is utilized to contain concentration equipment and the magnetic selection method of bloodstone material | |
| CN107779536A (en) | One kind direct-reduction iron production method and device | |
| CN104164556A (en) | Chain grate-tandem rotary kiln whole-particle fraction magnetic roasting process for refractory low-grade iron ore | |
| CN104567370B (en) | A kind of microwave double helix tubular type stove and utilize this microwave double helix tubular type stove to combine the method for preparing manganeisen with mineral hot furnace | |
| CN104152620B (en) | For the method and apparatus of powdered iron ore direct-reduction | |
| CN100564551C (en) | Heat recovering and microwave reducing manganesian ore roasting process and equipment | |
| CN102758046B (en) | Shortened production method of coal-based direct reduced iron and equipment therefor | |
| CN106244758A (en) | A kind of system and method efficiently utilizing body of heater fume afterheat to process iron-containing resource | |
| CN100552357C (en) | Iron sulfide mineral powder desulphurizing roasting and nitrogen quenching multifunctional microwave smelting apparatus | |
| CN113526821B (en) | Method and device for resource utilization of oily sludge in steel plant | |
| CN203893655U (en) | Vacuum heating furnace | |
| CN203928703U (en) | A kind of microwave dynamic high temperature continuous calcining equipment | |
| CN108642303A (en) | A kind of vacuum smelting method of zinc oxide ore | |
| CN201043182Y (en) | Electrical heated equipment for direct reduction of sponge iron | |
| CN206457532U (en) | A kind of vacuum microwave magnesium smelting device | |
| CN206089779U (en) | Vacuum induction furnace magnesium production system | |
| CN212404216U (en) | Magnetizing roasting furnace | |
| CN204373389U (en) | A kind of microwave double helix tube furnace | |
| CN104215064B (en) | Straight tunnel cave for Iron Ore Powder direct-reduction | |
| CN106191431A (en) | A kind of reduction reaction system and method for the aqueous pelletizing of lateritic nickel ore | |
| CN206204385U (en) | A kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |
|
| WD01 | Invention patent application deemed withdrawn after publication |