CN102936648B - Method for producing rich-titanium material by using microwave kiln, independent container and ilmenite pressing blocks - Google Patents

Method for producing rich-titanium material by using microwave kiln, independent container and ilmenite pressing blocks Download PDF

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CN102936648B
CN102936648B CN 201210462392 CN201210462392A CN102936648B CN 102936648 B CN102936648 B CN 102936648B CN 201210462392 CN201210462392 CN 201210462392 CN 201210462392 A CN201210462392 A CN 201210462392A CN 102936648 B CN102936648 B CN 102936648B
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ilmenite
briquetting
kiln
container
powder
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CN102936648A (en
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赵齐
司纪东
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SHANDONG YONGXIN ENERGY GROUP CO Ltd
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SHANDONG YONGXIN ENERGY GROUP CO Ltd
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Abstract

The invention discloses a method for producing a rich-titanium material by using a microwave kiln, an independent container and ilmenite pressing blocks. The method comprises the steps of 1), placing the ilmenite pressing blocks into the independent container, putting the container into the microwave kiln for continuous heating, and then taking the container out of the microwave kiln; 2), openingthe independent container, and pushing the ilmenite pressing blocks into a cooling stirrer rapidly, so that the ilmenite pressing blocks change into a powdery material; 3), lifting the powdery material into an air separator, and removing micro powder with quantity of more than 200 meshes in the powdery material by using the air separator; 4), subjecting the powdery material which is subjected to air separation to three-level magnetic separation to obtain magnetism; 5), adding the magnetism into a hydrolyzing tank, so that zero-valent iron on surfaces of magnetic ore particles is oxidized intoFe2O3 and shifted to a water solution; and 6), separating and cleaning the material which is discharged from the hydrolyzing tank through a six-level cyclone separator, and then drying the material to obtain the rich-titanium material. According to the method, the air pollution and the energy consumption are low, and carbon is mainly not subjected to direct reduction.

Description

The method of utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material
Technical field
The present invention relates to a kind of method for preparing rich titanium material.
Background technology
Along with the titanium industrial expansion, the natural rutile resource exhaustion day by day that the titanium grade is higher, this just forces people to develop the abundant ilmenite resource of reserves.Because ilmenite titanium grade is low, be directly used in that the titanium industrial production can occur that efficient is low, problems such as long flow path, " three wastes " amount are big, cost height, so generally all need preconcentration to become high-grade rich titanium material-titanium slag or artificial rutile, and then be used for the titanium industrial production.Therefore, the ilmenite of research high-efficient energy-saving environment friendly is produced rich titanium material method and is had very important meaning for the titanium industrial expansion.
The traditional method of producing rich titanium material mostly is to belong to carbothermic reduction reaction, it is liquid namely to use traditional hot stove of microwave kiln or high-power ore deposit that ilmenite and various carbonaceous and binder mixtures are smelted into earlier, make the iron oxide reduction in the ilmenite become molten iron, realize separating of titanium and iron, thereby obtain rich titanium material.This method is because be high-temperature service, and need to add in a large number such as additives such as pitch cokes, so cause atmospheric pollution easily, simultaneously there have not been enough market competitivenesss because energy consumption is too high, be subjected to the urgent and on the verge of being replaced of the pressure of environmental protection and national energy-saving and emission-reduction policy at present.
Summary of the invention
The purpose of this invention is to provide a kind of method of utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material, solve traditional technical problem that rich titanium preparation method for material is seriously polluted, energy consumption is high.
For achieving the above object, the present invention adopts following technical scheme: a kind of method of utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material, it is characterized in that step is as follows: step 1, the ilmenite briquetting is placed on ripple thoroughly and the autonomous container that can be incubated in, putting into the microwave kiln then heated 80~120 minutes continuously, and then being sent the microwave kiln, described ilmenite briquetting is the mixture briquetting that contains ilmenite powder, coal dust, borax, NaCl, iron oxide red powder and iron powder; Step 2, open autonomous container, the ilmenite briquetting of red heat is pushed in the cooling and stirring device fast, make the ilmenite briquetting become 180 ℃~220 ℃ pulverulent material; Step 3, pulverulent material is risen in the air float separator, remove the micro mist more than 200 orders in the pulverulent material with air float separator; Step 4, will obtain the magnetic thing through the pulverulent material after the selection by winnowing again through three grades of magnetic separation; Step 5, the magnetic thing is joined in the hydrolytic decomposition pot, in 40 ℃~70 ℃ salt solution, do not stopped to stir, blast air simultaneously and carry out oxidation, make the fe particle on magnetic thing ore particle surface be oxidized to Fe 2O 3And change in the aqueous solution; The material of emitting in step 6, the hydrolytic decomposition pot separates through six grades of cyclone separators and cleans, and is dry then, obtains rich titanium material at last.
Described ilmenite briquetting mainly is made up of following raw materials by weight:
Ilmenite powder 78.5%~82.5%;
Coal dust 10%~14%;
Borax 3%~4%;
NaCl 0.5%~1.5%;
Iron oxide red powder 1.0%~1.5%;
Iron powder 0.5%;
In the above-mentioned weight percent, the weight percent of the weight percent+coal dust of ilmenite powder need guarantee that also between 92.5%~95%, the weight percent of the weight percent+iron powder of the weight percent of the weight percent+NaCl of borax+iron oxide red powder also need guarantee between 5.0%~7.5%.
The making step of described ilmenite briquetting is as follows:
A, ilmenite powder and coal dust, borax, NaCl, iron oxide red powder, iron powder are mixed into mixture, add the water of amount of the mixture 5% again, in stirrer, stirred 5~15 minutes;
B, the material that will mix are pressed into briquetting under pressing machine;
C, at briquetting surface spraying water-based graphite coating, under 80 ℃~120 ℃ condition, dried 10~20 minutes then.
The granularity of described ilmenite can be 70 orders~200 orders, moisture content≤0.5%.
Fe in the described iron oxide red powder 2O 3Content 〉=97%, moisture content<1%.
The content of the iron in the described iron powder>98%, the non-corroding caking, granularity is 100 orders~200 orders.
Described autonomous container is made up of pallet and loam cake two portions, described pallet comprises the base plate of placing the ilmenite briquetting and using, the supporting plate that wraps in the bottom muff on the base plate and be connected muff bottom, bottom, described loam cake comprises the container inner bag that is placed on the base plate and can covers the ilmenite briquetting, wrap in the carriage that top muff on the container inner bag and ecto-entad pass the top muff and be connected with the container inner bag, between described base plate and the bottom muff, be equipped with the high temperature resistant wave-permeable coating between container inner bag and the top muff.
Described microwave kiln includes kiln body, magnetron, rollgang, roller-way drive-motor and transformer and attached electric elements, described kiln body arranged transversely also is placed on the kiln body support frame, two ends one end of kiln body is provided with opening for feed, the other end is provided with discharge port, the top of kiln body is communicated with smoke discharging pipe, the inwall of kiln body is provided with heat preservation protective layer, and the outer wall of kiln body is provided with the water-cooled interlayer.
Described magnetron can be arranged on that kiln is external, the left and right sides of kiln body, and magnetron by opening for feed to discharge port direction multiple spot dense distribution.
Described transformer and attached electric elements can be placed in that kiln is external, on the kiln body support frame of the kiln body left and right sides.
Compared with prior art the present invention has following characteristics and beneficial effect: the present invention is a kind of titanium dioxide process of enriching, also can make the microwave method solid state reduction produce rutile technology, with respect to traditional pyrogenic process, wet method bigger difference is arranged.The present invention belongs to early stage (700 ℃) and relies on pyrolysis gas to comprise the reduction of hydrogen, alkanes (uncombined carbon and hydrogen that the alkanes cracking produces) on reduction mechanism, latter stage just can occur the direct reduction of carbon.Not with carbon directly be reduced to the master, compare with the carbothermic reduction in the conventional art, essential distinction is arranged on the principle.
Ultimate principle of the present invention is, the ilmenite briquetting that will contain ilmenite powder be placed on ripple thoroughly and the autonomous container that can be incubated in, then by the continuous microwave kiln that turns round, make the ilmenite briquetting be given energy by microwave, take full advantage of the strong wave absorbtion of ilmenite and the saturating ripple heat-insulating property of autonomous container simultaneously, with the microwave energy maximum using, and build best metallurgical reduction gas atmosphere, realize continuous microwave kiln autonomous container internal solid reduced ilmenite briquetting, utilize the fe in hydrolysis method removal (restoring) ilmenite briquetting at last, realize that the ferrotianium separation obtains rich titanium material, or even artificial rutile (needing further roasting to obtain).
From integrated artistic, operational path of the present invention also has essential distinction with traditional preparation method.The present invention is a kind of airtight operation of having used autonomous container, its step is that elder generation (has airtight thermal environment), relies on the micro-wave energy heating ilmenite briquetting (whole process is to carry out at continuous rollgang) of coming in thoroughly in autonomous container, heating back ilmenite briquetting falls wherein fe through magnetic separation and in the internal corrosion of hydrolysis separating tank again, last residuum is rich titanium material (after the further roasting of rich titanium material, can also obtain artificial rutile).
The present invention has utilized microwave kiln and autonomous container, has avoided the mode of traditional kiln indirect heating dexterously, makes the anti-material of kiln and heat preservation method become very simple.
The present invention has utilized microwave kiln and autonomous container, has also adopted new reduction mechanism simultaneously, so not only atmospheric pollution is little, and energy consumption is low.
The present invention adopts the microwave kiln to replace traditional hot stove in high-power ore deposit, and the microwave kiln is heated to be leading with internal tank, taken full advantage of micro-wave energy, is one of key point of the present invention.
The present invention has designed a kind of new type of microwave kiln, that these new type of microwave kiln furnitures have is easy to maintenance, can turn round continuously and characteristics that the microwave energy rate of utilization is high, especially the rollgang of the microwave source of kiln body both sides multiple spot dense distribution and loop line form (can transport the ilmenite briquetting continuously, realized automatic production, for the expansion in future of the present invention provides the space) not only realized the optimum coupling of microwave in the big length kiln chamber, and eliminated thermal runaway, guaranteed homogeneity and the stability of product quality.Transformer in the microwave kiln of the present invention and attached electric elements are arranged on the kiln body support frame of kiln body both sides, avoided because of the furnace gas temperature that produces continuously to the detrimentally affect that transformer and attached electric elements cause, simplified the thermal insulation fire-resistant system of microwave kiln bulky complex greatly.
Furnace gas temperature in the kiln of microwave kiln of the present invention has only probably that (furnace gas temperature in traditional microwave kiln kiln probably has 1200 ℃~1300 ℃ about 100 ℃, smelting temperature in traditional hot stove in high-power ore deposit is up to 1700 ℃), the outer temperature near the kiln body of kiln probably has only about 50 ℃, so when utilizing the present invention to produce rich titanium material, whole power consumption only is equivalent to use 40%~50% of traditional method.
Autonomous container of the present invention is the microwave reduction container, and its feature is: 1, adopted rational design, shared the burden of the anti-material of traditional kiln, broken the whole up into parts; 2, maintenance service only relates to autonomous container, so become very simple; The most important thing is that 3, autonomous container has good heat-insulating property, so the capacity usage ratio of autonomous container inside improves greatly, not only energy-conservation, the while can realize being rapidly heated, and has guaranteed best metallurgical atmosphere, lays a good foundation for obtaining desirable rich titanium material.
The present invention does not need huge pelletizing manufacturing system (cry again and make the ball sintering system), also not needing to add carbon element replenishes, but adopted the ilmenite briquetting, the prescription of ilmenite briquetting and shape and pressing process, all be essentially different with traditional pelletizing, so the present invention has avoided the huge pelletizing manufacturing system of setting up in order to improve metallurgical performance in the traditional technology (cry and make the ball sintering system), has simplified production process.
Ilmenite briquetting of the present invention has determined the success of technology, because metallurgy environment and the atmosphere of ilmenite briquetting inside are good, the ilmenite briquetting is continuous production, and must continuous running could satisfy processing requirement in the microwave kiln.
The mineral of the ilmenite that the present invention is directed to are not limited, can use all sea sand ore deposits.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is the main TV structure synoptic diagram of microwave kiln.
Fig. 2 is that synoptic diagram is looked on the right side of Fig. 1.
Fig. 3 is the synoptic diagram that rollgang cooperates with the kiln body.
Fig. 4 is that the master of autonomous container looks synoptic diagram.
Fig. 5 is the schematic top plan view of Fig. 4.
Fig. 6 is the synoptic diagram of A-A section among Fig. 4.
Reference numeral: 1-kiln body, 2-magnetron, 3-opening for feed, 4-discharge port, 5-rollgang, 6-roller-way drive-motor, 7-heat preservation protective layer, 8-water-cooled interlayer, 9-kiln body support frame, 10-transformer and attached electric elements, 11-smoke discharging pipe, 12-autonomous container, 13-ilmenite briquetting, 14-base plate, 15-bottom muff, 16-high temperature resistant wave-permeable coating, 17-supporting plate, 18-container inner bag, 19-top muff, 20-carriage.
Embodiment
This method of utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material, its step is as follows.
Step 1, the ilmenite briquetting is placed on ripple thoroughly and the autonomous container that can be incubated in, put into the heating 80~120 minutes continuously of microwave kiln then, and then be sent the microwave kiln; Specifically, be exactly that the ilmenite briquetting that will prepare earlier uses mechanical manipulator to pile up on the pallet of autonomous container, the loam cake of autonomous container is detained then, then this cover is filled the autonomous container of ilmenite briquetting and sent into the heating of microwave kiln (through interior about 80~120 minutes continuous heat-processed of microwave kiln with rollgang by the continuously and smoothly, the ilmenite briquetting of autonomous container inside has been finished the process of solid state reduction substantially), and then send the microwave kiln with the rollgang continuously and smoothly.Described ilmenite briquetting is the mixture briquetting that contains ilmenite powder, coal dust, borax, NaCl, iron oxide red powder and iron powder.
In the step 1, in the early stage of heating, in the ilmenite briquetting following principal reaction: C can take place 2H 6→ C 2H 4+ H 2, C 2H 4→ CH 4+ C, CH 4→ C+2H 2, FeO+n 2H 2→ Fe+H 2O+ (n 2-1) H 2In the later stage of heating, in the ilmenite briquetting Fe can take place xO yThe reaction of+C (cracking carbon) → Fe+CO.
Step 2, open autonomous container 12, the ilmenite briquetting 13 of red heat is pushed in the cooling and stirring device fast, make ilmenite briquetting 13 become 180 ℃~220 ℃ pulverulent material; Specifically, open the loam cake of autonomous container exactly earlier with mechanical manipulator, the ilmenite briquetting with red heat pushes in the cooling and stirring device fast then, and about about 10 seconds time, briquetting will become the pulverulent material about 180 ℃~220 ℃.
Step 3, pulverulent material is risen in the air float separator, remove the micro mist more than 200 orders in the pulverulent material (main component of the micro mist that 200 orders are above is the residuum after reductive agent and the burning of ilmenite briquetting) with air float separator.
Step 4, will obtain the magnetic thing through the pulverulent material after the selection by winnowing again through three grades of magnetic separation.
Step 5, the magnetic thing is joined in the hydrolytic decomposition pot, in 40 ℃~70 ℃ salt solution, do not stopped to stir, blast air simultaneously and carry out oxidation, make the fe particle on magnetic thing ore particle surface be oxidized to Fe 2O 3And change in the aqueous solution, about about 8 hours of whole process can be finished whole fe oxidising processs.Contain the 1%(weight percent in the described salt solution) salt.
The material of emitting in step 6, the hydrolytic decomposition pot separates through six grades of cyclone separators and cleans, and is dry then, obtains iron-holder≤1%(weight percent at last) rich titanium material.
In the present embodiment, ilmenite briquetting 13 is mainly formed (total amount is 100%) by following raw materials by weight.
Ilmenite powder 78.5%~82.5%(decides according to all iron content in the ilmenite, and the content height takes off limit, and content hangs down capping); Coal dust 10%~14%(decides according to all iron content in the ilmenite, the high capping of content, the low limit of taking off of content); Borax 3%~4%(requires can not deliquescence, caking or weathering); NaCl0.5%~1.5%(requires can not deliquescence, caking or weathering); Iron oxide red powder 1.0%~1.5%; Iron powder 0.5%; In the above-mentioned weight percent, the weight percent of the weight percent+coal dust of ilmenite powder need guarantee that also between 92.5%~95%, the weight percent of the weight percent+iron powder of the weight percent of the weight percent+NaCl of borax+iron oxide red powder also need guarantee between 5.0%~7.5%.
Described coal dust is reductive agent, and borax, NaCl, iron oxide red powder and iron powder are additive.
In the present embodiment, the granularity of ilmenite is 70 orders~200 orders, moisture content≤0.5%.Fe in the iron oxide red powder 2O 3Content 〉=97%, moisture content<1%.The content of the iron in the iron powder>98%, the non-corroding caking, granularity is 100 orders~200 orders.
The generation of above proportioning comes from the molten brazing of oxygen common in the production, people are accustomed to using the mixture of borax and salt to be sprinkling upon the molten metal surface of high temperature, make the metallic surface of high-temperature fusion remain cleaning and not oxidized, this is very great for the fe effect that restores in the solid state reduction process among the present invention, can keep its surfactivity, for the complete diffusion reaction that occurs iron crystal stock and ore particle inside as early as possible provides assurance, avoided causing metallurgical atmosphere variation because of the covering of selective oxidation and impurity.
Following table is the result that the proportioning of different embodiment records in the laboratory.Data are weight percentage in the table.Result described in the table used 10% salt acid soak 10 minutes after being ilmenite briquetting process above-mentioned steps one to four, and the TiO that obtains is chemically examined in oven dry then 2Content (because above-mentioned steps five and step 6 are the steps of large-scale industrial production, so in order in the laboratory, to record TiO 2Content, need to adopt 10% salt acid soak 10 minutes, the method for oven dry chemical examination is surveyed TiO then 2Content, this experimental technique is the same substantially with the effect of above-mentioned steps five and step 6).
Figure 2012104623924100002DEST_PATH_IMAGE001
The making step of described ilmenite briquetting 13 is as follows: a, ilmenite powder and reductive agent (coal dust), additive (borax, NaCl, iron oxide red powder and iron powder) are mixed in proportion resulting mixture, add amount of the mixture 5%(weight percent again) water, in stirrer, stirred again 5~15 minutes; B, the material that will mix are pressed into the briquetting (thickness of briquetting and the penetrativity of microwave are complementary, and are as the criterion fully with the sufficient reacting that can guarantee briquetting inside) with certain thickness brick shape under pressing machine (such as the pressing machine of 30Mpa); C, at briquetting surface spraying water-based graphite coating, under 80 ℃~120 ℃ condition, dried 10~20 minutes then.For the process that makes the compacting briquetting becomes easier to be better, make the forming effect of ilmenite briquetting better, can also in the mixture that is mixed in proportion, add the binding agent of trace again, such as wilkinite, but it is minimum that content should control to, and guarantees that the dry strength of briquetting gets final product.
Adopt the step of high pressure compacting and surface spraying water-based graphite coating, can make the inside of ilmenite briquetting have excellent metallurgical environment and atmosphere, avoid the huge ball sintering system of setting up in order to improve metallurgical performance in the traditional technology of making, simplified production process.In addition, the ilmenite briquetting of standard geometrical shapes is also for realizing that mechanize is produced continuously and the accumulating of material is provided convenience.
Referring to Fig. 1-3, in the present embodiment, the microwave kiln includes kiln body 1, magnetron 2, rollgang 5, roller-way drive-motor 6 and transformer and attached electric elements 10, described kiln body 1 arranged transversely also is placed on the kiln body support frame 9, two ends one end of kiln body 1 is provided with opening for feed 3, the other end is provided with discharge port 4, the top of kiln body 1 is communicated with smoke discharging pipe 11, and the inwall of kiln body 1 is provided with heat preservation protective layer 7, and the outer wall of kiln body 1 is provided with water-cooled interlayer 8.
The structure of described kiln body 1 is by a large amount of experiments and produces checking: kiln body inwall brushing protective material (being heat preservation protective layer 7), the external wall of kiln are set up recirculated water cooling cover (being water-cooled interlayer 8).Described transformer and attached electric elements 10(comprise elements such as high-tension transformer, electric capacity, diode etc.) be placed in that kiln is external, on the kiln body support frame 9 of the kiln body left and right sides, just be designed into the position of separating with kiln body 1, can avoid the interference of kiln body temperature degree.Described magnetron 2 is arranged on that kiln is external, the left and right sides of kiln body, and magnetron 2 by opening for feed to discharge port direction multiple spot dense distribution, what namely magnetron 2 adopted is the form of small power multiple spot dense distribution, more satisfactory to whole reduction reaction.
Referring to Fig. 1, Fig. 3, the type of transmission of microwave kiln is rollgang 5(steel roller-way) the adjustable speed operation, rollgang 5 is loops of a closure, rollgang 5 constantly turns round, can realize the mode of production of continuous reduced ilmenite, simultaneously, the discharge port end at kiln body 1 can arrange mechanical manipulator, the automatization of realization loading and unloading material.
Referring to Fig. 4-6, in the present embodiment, autonomous container 12 is made up of pallet and loam cake two portions, described pallet comprises places the base plate 14 that the ilmenite briquetting is used, wrap in the bottom muff 15 on the base plate 14, and the supporting plate 17 that is connected muff bottom, bottom, described loam cake comprises the container inner bag 18 that is placed on the base plate 14 and can covers ilmenite briquetting 13, wrap in the top muff 19 on the container inner bag 18, and the ecto-entad carriage 20 that passes top muff 19 and be connected with container inner bag 18, between described base plate 14 and the bottom muff 15, be equipped with high temperature resistant wave-permeable coating 16 between container inner bag 18 and the top muff 19.In the present embodiment, the vertical cross-section of container inner bag 18 is shaped as convex shape.
In the present embodiment, the horizontal cross sectional geometry of container inner bag 18 and base plate 14 is square, and the length of side of the horizontal section of container inner bag 18 is less than the length of side of the horizontal section of base plate 14.In other embodiments, can also be that the horizontal cross sectional geometry of container inner bag 18 and base plate 14 is circle, and the diameter of the horizontal section of container inner bag 18 be less than the diameter of the horizontal section of base plate 14.
The design of described autonomous container is most important, and it is the separate unit of production line cocycle.At first, autonomous container adopts the very capable material of high temperature resistant and saturating ripple to make container inner bag 18 and base plate 14, and container inner bag 18 and base plate 14 can be used as the protective layer that bears temperature of reaction; Secondly, outside container inner bag 18 and base plate 14, brushed one deck protective cover, it is high temperature resistant wave-permeable coating 16, covering certain thickness top muff 19 and bottom muff 15(are made by lagging materials such as rock wools outside high temperature resistant wave-permeable coating 16 again), this structure makes the ilmenite briquetting reduce scattering and disappearing of energy as much as possible after fully absorbing microwave energy just, improved energy utilization ratio greatly, described high temperature resistant wave-permeable coating 16 can prevent that container inner bag 18 from damaging top muff 19 because temperature is too high, prevent that base plate 14 from damaging bottom muff 15 because temperature is too high; At last, use the carriage 20(of integrated steel also can be framework) container inner bag 18 and top muff 19 are connected into independently individuality of a cover, mechanical manipulator by design voluntarily cooperates carriage 20 taking and placing container inner bags 18, can realize the automated handling material, forms continuously and produces.
The autonomous container 12 saturating ripples of particular design, high temperature resistant, insulation, autonomous container 12 ISNs are placed with ilmenite briquetting 13, and each autonomous container 12 is independently individual, independently finishes reduction reaction.Autonomous container 12 places on the rollgang 5, and according to the desin speed operation, autonomous container 12 can keep reasonable distance to turn round continuously under the driving of rollgang 5.

Claims (9)

1. method of utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material is characterized in that step is as follows:
Step 1, the ilmenite briquetting is placed on ripple thoroughly and the autonomous container that can be incubated in, putting into the microwave kiln then heated 80~120 minutes continuously, and then being sent the microwave kiln, described ilmenite briquetting is the mixture briquetting that contains ilmenite powder, coal dust, borax, NaCl, iron oxide red powder and iron powder;
Step 2, open autonomous container, the ilmenite briquetting of red heat is pushed in the cooling and stirring device fast, make the ilmenite briquetting become 180 ℃~220 ℃ pulverulent material;
Step 3, pulverulent material is risen in the air float separator, remove the micro mist more than 200 orders in the pulverulent material with air float separator;
Step 4, will obtain the magnetic thing through the pulverulent material after the selection by winnowing again through three grades of magnetic separation;
Step 5, the magnetic thing is joined in the hydrolytic decomposition pot, in 40 ℃~70 ℃ salt solution, do not stopped to stir, blast air simultaneously and carry out oxidation, make the fe particle on magnetic thing ore particle surface be oxidized to Fe 2O 3And change in the aqueous solution;
The material of emitting in step 6, the hydrolytic decomposition pot separates through six grades of cyclone separators and cleans, and is dry then, obtains rich titanium material at last;
Described ilmenite briquetting mainly is made up of following raw materials by weight:
Ilmenite powder 78.5%~82.5%;
Coal dust 10%~14%;
Borax 3%~4%;
NaCl 0.5%~1.5%;
Iron oxide red powder 1.0%~1.5%;
Iron powder 0.5%;
In the above-mentioned weight percent, the weight percent of the weight percent+coal dust of ilmenite powder need guarantee that also between 92.5%~95%, the weight percent of the weight percent+iron powder of the weight percent of the weight percent+NaCl of borax+iron oxide red powder also need guarantee between 5.0%~7.5%.
2. the method for utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material according to claim 1 is characterized in that the making step of described ilmenite briquetting is as follows:
A, ilmenite powder and coal dust, borax, NaCl, iron oxide red powder, iron powder are mixed into mixture, add the water of amount of the mixture 5% again, in stirrer, stirred 5~15 minutes;
B, the material that will mix are pressed into briquetting under pressing machine;
C, at briquetting surface spraying water-based graphite coating, under 80 ℃~120 ℃ condition, dried 10~20 minutes then.
3. the method for utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material according to claim 1, it is characterized in that: the granularity of described ilmenite is 70 orders~200 orders, moisture content≤0.5%.
4. the method for utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material according to claim 1 is characterized in that: the Fe in the described iron oxide red powder 2O 3Content 〉=97%, moisture content<1%.
5. the method for utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material according to claim 1 is characterized in that: the content of the iron in the described iron powder>98%, and the non-corroding caking, granularity is 100 orders~200 orders.
6. the microwave kiln that utilizes according to claim 1, the method that autonomous container and ilmenite briquetting are produced rich titanium material, it is characterized in that: described autonomous container (12) is made up of pallet and loam cake two portions, described pallet comprises places the base plate (14) that the ilmenite briquetting is used, wrap in the bottom muff (15) on the base plate (14), and the supporting plate (17) that is connected muff bottom, bottom, described loam cake comprises the container inner bag (18) that is placed on base plate (14) upward and can covers ilmenite briquetting (13), wrap in the top muff (19) on the container inner bag (18), and the ecto-entad carriage (20) that passes top muff (19) and be connected with container inner bag (18), between described base plate (14) and the bottom muff (15), be equipped with high temperature resistant wave-permeable coating (16) between container inner bag (18) and the top muff (19).
7. the microwave kiln that utilizes according to claim 1, the method that autonomous container and ilmenite briquetting are produced rich titanium material, it is characterized in that: described microwave kiln includes kiln body (1), magnetron (2), rollgang (5), roller-way drive-motor (6) and transformer and attached electric elements (10), described kiln body (1) arranged transversely also is placed on the kiln body support frame (9), two ends one end of kiln body (1) is provided with opening for feed (3), the other end is provided with discharge port (4), the top of kiln body (1) is communicated with smoke discharging pipe (11), the inwall of kiln body (1) is provided with heat preservation protective layer (7), and the outer wall of kiln body (1) is provided with water-cooled interlayer (8).
8. the method for utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material according to claim 7, it is characterized in that: described magnetron (2) is arranged on that kiln is external, the left and right sides of kiln body, and magnetron (2) by opening for feed to discharge port direction multiple spot dense distribution.
9. the method for utilizing microwave kiln, autonomous container and ilmenite briquetting to produce rich titanium material according to claim 7, it is characterized in that: described transformer and attached electric elements (10) are placed on the kiln body support frame (9) of the external left and right sides of kiln.
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CN102943142B (en) * 2012-11-16 2015-02-18 山东永鑫能源集团有限公司 Solid-state reduction ilmenite pressing block for producing titanium-rich material and preparation method and application thereof
CN102912113A (en) * 2012-11-16 2013-02-06 山东永鑫能源集团有限公司 Continuous microwave kiln for producing enrich titanium materials and method for preparing enrich titanium materials thereof
CN109338098B (en) * 2018-11-30 2019-09-20 海南文盛新材料科技股份有限公司 A method of ilmenite reduction is realized with microwave technology
CN114686687B (en) * 2022-03-09 2024-05-07 山东产研绿洲环境产业技术研究院有限公司 Ilmenite microwave titanium enrichment device and microwave titanium enrichment method

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