CN103060564A - Novel process for preparing acid-soluble titanium-rich material and iron powder by using tunnel kiln reduction selective grinding method - Google Patents
Novel process for preparing acid-soluble titanium-rich material and iron powder by using tunnel kiln reduction selective grinding method Download PDFInfo
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Abstract
The invention relates to the field of comprehensive utilization of mineral resources, and in particular relates to a method and a process of tunnel kiln reduction selective grinding for preparing an acid-soluble titanium-rich material and iron powder from a titanium concentrate. According to the present invention, on the basis of producing the acid-soluble titanium-rich material by using an electric furnace method, and applying industrial patented technology of tunnel kiln reduction selective grinding which has been implemented in vanadium-titanium magnetite by the inventor, production technology problems of preparing acid-soluble titanium-rich minerals and iron powder applicable to all types and grades of titanium concentrates are solves system, providing a efficient, energy saving, environmentally friendly new technology and new way with good applicability for the industrial-scale production of titanium-rich materials.
Description
Technical field
The present invention relates to the mineral resources comprehensive utilization field, be specifically related to a kind of method and technique that from ilmenite concentrate, prepares the tunnel kiln reduction mill choosing of the rich titanium material of solubility in acid and iron powder.
Background technology
The raw material sources one of China's titanium dioxide industry are ilmenite concentrates, the 2nd, and the titanium ore enriched substance that forms through the physical chemistry production process is called for short rich titanium material.In recent years along with China's titanium dioxide industry is fast-developing, demand to rich titanium material grows with each passing day, because it is high that rich titanium material has the titaniferous amount, technique is fairly simple, technological process three wastes treatment capacity is few, resource and energy utilization rate are high, and help to improve the advantages such as product quality, favored by Producing Titanium Dioxide producer, present that supply falls short of demand, dependence on import, the outstanding situation of imbalance between supply and demand.It is predicted, the rich titanium material of a few years from now on China still needs a large amount of imports.
At present, China is electric furnace process from the main production method that ilmenite concentrate prepares rich titanium material, although it has series of advantages, energy consumption is high, produces 1 ton of titanium slag, approximately needs the electric energy of 3000 kWh, the energy relatively the shortage the area and national, be difficult to select.Therefore, for increasing the supply of rich titanium material domestic market, opening up the new method and new technology of producing rich titanium material, is a research of technique problem extremely to be solved.In order to fully utilize Flos Bombacis Malabarici high magnesia ilmenite, finished " the tunnel kiln reduction mill selects method to produce artificial rutile welding electrode and iron powder expanding test from the Flos Bombacis Malabarici ilmenite concentrate " as far back as Changsha mining and metallurgy institute of former Ministry of Metallurgical Industry beam in 1978 through winter and team thereof, obtained Hunan Province's science conference prize; Nineteen eighty-three has successfully been carried out day 5.8 tons of ilmenite concentrates of processing " the tunnel kiln reduction mill selects method to produce the rich titanium material of solubility in acid and high-quality iron powder pilot-plant test from the Flos Bombacis Malabarici ilmenite concentrate ", the characteristics of rich titanium material are acidolysis rate up to easily making the transition 97% or more and when preparing rutile titanium white, are the good raw material of sulfate process titanium dioxide; The essence reduced iron powder contains TFe 98.68%, Mfe 97.93%, Ti02 0.82%, S 0.015%, C 0.05%, P 0.01%, and solid solution has the lot of trace beneficial element.Through manufacturing experimently a plurality of kind powdered metal parts more than 20,000 parts, its performance and bench testing and entrucking use the result all fine, demonstrate the characteristics such as intensity is high, wear-resisting, plasticity is good.Presided over by expert statement by Ministry of Metallurgical Industry in 1986, and be cited as the international most advanced level project.Above-mentioned situation was published in " mining metallurgical engineering " periodical (the 1st phase in 1981) " Flos Bombacis Malabarici comprehensive utilization of resources scientific research report a collection of selected materials " once, and (the Volume Four first volume is put forward the titanium Technology, in March, 1986), the 12nd chapter (metallurgical industry press in the monograph " Floatation Process Theory with select smelting to put into practice ", 1995,11).Affect the subject matter of this technique industrialization: the one, reduction temperature higher (1280 ℃), and the conventional use temperature Shi of the silicon carbide tank of present industrial widespread use＜=1200 ℃; The 2nd, the loading and unloading material is by artificial, and labour intensity is large and sanitary condition is poor.Therefore, the present invention be directed to the problems referred to above exploitation, the one, enlarge the face that utilizes of ilmenite concentrate, except the Flos Bombacis Malabarici ilmenite concentrate, also system development has been carried out in the ilmenite concentrate of domestic and international other types and grade; The 2nd, at home and abroad invest to found the factory from the sand titanium ore of beach and produce the needs (local short of electricity can not be adopted electric furnace process) of rich titanium material for satisfying enterprise, processing technological flow, parameter and the equipment of different grade sand titanium ores is provided; The 3rd, (single kiln production capacity is low to transplant the four problems that exists when independent research is used tunnel furnace for the treatment of the tunnel furnace automatic producing technology solution ilmenite concentrate of iron ore concentrate, level of automation is low, labour intensity is large and sanitary condition is poor), according to patent retrieval, except adopting the rotary kiln reduction, the raw material ultrafine, low-temperature reductions etc. are difficult to realize outside the patented technology of industrialization, the sharp grade in the patent No. of the Yang Shao of Panshihua University is to disclose the method that 1100 ~ 1150 ℃ of reduction grindings of Flos Bombacis Malabarici ilmenite concentrate pelletizing tunnel furnace are produced rich titanium material in 200810306298 patents, but the technological process of not touching upon and parameter are controlled, and only limit to a kind for the treatment of process of primary ore.
The people such as Liang Jingdong are engaged in the comprehensive utilization work that China's sefstromite produces resource for a long time, for solving iron, titanium, the method that vanadium separates, the key technical problem such as technique and industrial equipment, successively declare and authorized [91706655.1], [200810143675.6], [2009101600587.1], [200920168575.9], [2011100344307X], [20110367255.8], [201210257024.6] the multinomial patent such as, wherein " a kind of industrialization method of new comprehensive utilization sefstromite concentrate " and patents such as " automatic production lines of the tunnel kiln direct reduced iron " enforcement of having founded the factory.The present invention prepares the rich titanium material of solubility in acid and a kind of novel process that can realize industrialization of developing for dissimilar, grade ilmenite concentrate just on existing independent research patent basis.
Summary of the invention
The present invention produces on the rich titanium material of the solubility in acid slag basis in electric furnace process, the application invention people selects the industrialization method patented technology at the tunnel kiln reduction mill that vanadium titano-magnetite is implemented, system has solved the production technology problem that all kinds, grade ilmenite concentrate prepare the rich titanium material of solubility in acid and iron powder that is applicable to, for the rich titanium material of industrial-scale production provides a kind of efficient, energy-saving and environmental protection, novel process, new way that suitability is strong.
Technical problem to be solved by this invention is: the tunnel kiln reduction mill of application autonomous research and development selects method; selection and integrated coupling by different firing temperature systems, different catalysts; guarantee that reduction temperature is 950～1200 ℃ of lower smooth and easy carrying out; realize that rich titanium item position, yield, sour solubility and iron powder grade, yield reach the desired technico-economical comparison of rower; as shown in table 1:
Table 1, tunnel kiln reduction mill select method to prepare the technico-economical comparison of rich titanium material and iron powder from dissimilar grade ilmenite concentrate
Annotate: under the different technical parameters condition, rich titanium material acidolysis rate is 92-98%, all reaches professional etiquette and requires index
The present invention has kept not only that the titanium content that electric furnace process has is high, technique simple, the three wastes are processed less, byproduct direct utilization ratio advantages of higher, and can significantly reduce energy consumption, the byproduct cost performance promotes, not restricted by resources supplIes, suit measures to local conditions, produce with gathering materials on the spot rich titanium material, a kind of new industrialization method and the technique of having opened up for enlarging China rich titanium material production.Reached the following functions target: the one, for having low-grade ilmenite concentrate (concentrate contains TiO2＜40%, the TFe＞30%) resource (comprise primary ore, half weathered ore, beach placer and select factory's chats etc.) of a large amount of fine grain teeth cloths, difficult choosing both at home and abroad, and the area of short of electricity or electricity price costliness and country provide a kind of new industrialization method that fully utilizes efficiently, economically ilmenite concentrate; The 2nd, for the characteristics of different ilmenite concentrates, adopt the integrated coupling of different calcining systems and different catalysts, reductive agent type and addition thereof, the firing temperature of ilmenite concentrate is down to 950 ℃～1200 ℃ by original 1280 ℃, obtain under the acidolysis rate high rich titanium material and high grade iron vermicelli spare guaranteeing, realized that production process is smooth and easy, provide a kind of novel process for domestic all types ilmenite concentrate prepares rich titanium material; The 3rd, with three large patented technologies of independent research: high-density briquetting, alloy tank charging and fuel manipulator crane tool change into the processing that merit is applied to ilmenite concentrate, for efficient, economy, environmental protection prepare the new shortcut that rich titanium material provides quick realization industrialization.
Be technico-economical comparison and the functional objective that realizes that the present invention will reach, the technical process of implementing comprises automaticmachines batching, batch mixing, briquetting or granulation, piling, tinning, two sections heating reductions of tunnel furnace, mechanical discharging, ore grinding, magnetic separation separating step and device, guarantees that process flow operation is smooth and easy.
⑴ batching: by weight ratio with 100 parts in ore deposit, with 5～20 parts of catalyzer and 10～30 parts of mixings of solid reductant; Wherein, described mineral are primary ore, or half weathering primary ore or beach placer, and wherein said catalyzer is sodium-chlor, yellow soda ash, is market newly-increased catalyzer L on sale in addition, depending on mineral type, be used alone or as a mixture; The function of newly-increased catalyzer L; The one, the ferrotitanium good separating effect, rich titanium material is of high grade, and solubility in acid is good, and the 2nd, be suitable for dissimilar and the processing of grade ilmenite concentrate; The 3rd, addition is less, and only 5 ~ 10%, price is suitable; The 4th, environmental pollution is little; Sodium-chlor can obtain preferably iron, titanium Separation Indexes, but rich titanium material solubility in acid be lower than electric furnace under low reduction temperature (about 1050 ℃), need can obtain the acidolysis rate more than 90% under the weak acid leaching condition; Yellow soda ash is used for beach placer, reduction temperature can be down to 950 ℃, ferrotitanium separation finger absolute altitude not only, the acidolysis rate of rich titanium material is also up to more than 98%, but addition is larger, reaches the selection of 20%, three kind of catalyzer and consumption according to ore type, resource and customer requirements rational Match are determined then and there, have cooling, flux, grain growth, strengthen the functional effect that ferrotitanium separates; Wherein said solid reductant is at least a in hard coal, broken Jiao, refinery coke, brown coal, the coke etc., or chooses one nearby wantonly in conjunction with local resources.
⑵ charging, reduction: with the ingredients mixture briquetting behind the mixing or granulation (or powder) tinning, mechanical manipulator pushes in the tunnel furnace, the temperature-gradient method reductive firing, and temperature is controlled at 950～1200 ℃ and be incubated 5～60h, obtains reducing material; Wherein said segmentation calcining system refers to first 950～1000 ℃ of insulation for some time, make ferric oxide fully be reduced to metallic iron, temperature is risen to 1150～1200 ℃ again, insulation for some time, make the metallic iron grain growth, separate in order to ferrotitanium, meanwhile, titanium mineral also is conducive to the molten phase transformation of acid, and the temperature control time is selected according to dissimilar concentrate test; Wherein charging can be adopted conventional containers, such as the silicon carbide tank etc., below 1100 ℃, considers heat transfer property and the resistance to elevated temperatures of container, preferentially selects the heating resisting metal tank; The material of wherein said metal tin can adopt conventional refractory alloy, as: heat-resistance stainless steel etc.
⑶ mill choosing separates: will, magnetic separation separation broken, levigate from the reducing material of tunnel furnace mechanical relief, obtain rich titanium material and iron powder product; Wherein said levigate, magnetic separation adopts the grinding machine length-to-diameter ratio large, and medium is that the open circuit wet type mill of 4～15 millimeters beads selects flow process; Wherein the rich titanium material of magnetic separation gained is decided TiO on type, grade, processing parameter and the customer requirements of ilmenite concentrate
2Grade 67～77%, yield 90～99%, acidolysis rate 92～98% is the high quality raw material of sulfate process titanium dioxide; The TFe grade 86～94% of gained iron powder, yield 84～96%, can be directly as the reductive agent of chemical industry use or briquetting after be used for the raw material of Electric furnace steel making, or after the essence reduction for powdered metal parts processed etc., realize the diversity of purposes, the pig iron cost performance of smelting than electric furnace process is high.
Description of drawings
Fig. 1 is that tunnel kiln reduction mill of the present invention selects the rich titanium material of the standby solubility in acid of legal system and iron powder commercial processes flow process.It is on the commercial processes process base of independent research patent [200810143675.6] carrying out Improvement and development::
The first, will process object and be changed by iron ore concentrate and be ilmenite concentrate dissimilar and grade, therefore, to the requirement of product, reform technical process, parameter and equipment for the characteristics of ilmenite concentrate and user;
The second, in view of iron difficult reductibility in ilmenite concentrate, newly-increased catalyzer L has realized that dissimilar ilmenite concentrate can both reduce at a lower temperature, strengthens iron, titanium separating effect, reaches preferably technico-economical comparison;
Three, with the reductive firing system of tunnel furnace, burn till by one section and to change two sections into and burn till, namely save energy is guaranteed again the realization of reductive firing index.
Embodiment
In conjunction with dissimilar and ilmenite concentrate grade, use commercial processes flow process of the present invention, carried out the enforcement of following case:,
Embodiment 1 prepares the rich titanium material of solubility in acid and iron powder from primary ore
(TiO2 46.31% with 100 parts of primary ores, TFe 33.75%), with 10 parts of catalyzer L, 16 parts of mixings of reductive agent, granulate with full automatic press briquetting or pelletizer, with the mechanical manipulator alloy tank of packing into, and in tunnel furnace two sections heating reductions (a section 1000 ℃, two sections 1200 ℃), and be incubated 5～60 h, obtain reducing material; Reducing material is broken, be milled down to-200 orders 65%, and magnetic separation obtains rough concentrate and mine tailing, and coarse concentrate regrinding carefully arrives-200 orders 70%, and magnetic separation obtains concentrate and chats, and mine tailing and chats are mixed into rich titanium material.The separating resulting of the rich titanium material of gained and iron powder is as shown in table 1:
Table 1, embodiment 1 primary ore reduction-mill select separating resulting
Embodiment 2 prepares the rich titanium material of solubility in acid and iron powder from half weathering primary ore 1
(TiO2 46.44% with 100 parts of half weathering primary ores, TFe 35.51%), with 5 parts of catalyzer L, 16 parts of mixings of reductive agent, granulate with full automatic press briquetting or pelletizer, with the mechanical manipulator alloy tank of packing into, and in tunnel furnace two sections heating reductions (a section 1000 ℃, two sections 1200 ℃) and be incubated 5～60 h, obtain reducing material; Reducing material is broken, be milled down to-200 orders 65%, and magnetic separation obtains rough concentrate and mine tailing, and coarse concentrate regrinding carefully arrives-200 orders 70%, and magnetic separation obtains concentrate and chats, and mine tailing and chats are mixed into rich titanium material.The separating resulting of the rich titanium material of gained and iron powder is as shown in table 2:
Table 2, embodiment 2 half weathering primary ores 1 reduction-mill select separating resulting
Embodiment 3 prepares the rich titanium material of solubility in acid and iron powder from half weathering primary ore 2
(TiO2 46.44% with 100 parts of half weathering primary ores, TFe 35.51%), with 10 parts of catalyzer L, 16 parts of mixings of reductive agent, granulate with full automatic press briquetting or pelletizer, with the mechanical manipulator alloy tank of packing into, and in tunnel furnace two sections heating reductions (a section 1000 ℃, two sections 1200 ℃), and be incubated 5～60 h, obtain reducing material; Reducing material is broken, be milled down to-200 orders 65%, and magnetic separation obtains rough concentrate and mine tailing, and coarse concentrate regrinding carefully arrives-200 orders 70%, and magnetic separation obtains concentrate and chats, and mine tailing and chats are mixed into rich titanium material.The separating resulting of the rich titanium material of gained and iron powder is shown in table 3:
Table 3, embodiment 3 half weathering primary ores 2 reduction-mill select separating resulting
Embodiment 4 prepares the rich titanium material of solubility in acid and iron powder from half weathering low-grade primary ore deposit 3
(TiO2 34.22% with 100 parts in half weathering low-grade primary ore deposit, TFe 39.95%), with 10 parts of catalyzer L, 16 parts of mixings of reductive agent, granulate with full automatic press briquetting or pelletizer, with the mechanical manipulator alloy tank of packing into, and in tunnel furnace two sections heating reductions (a section 1000 ℃, two sections 1200 ℃) and be incubated 5～60 h, obtain reducing material; Reducing material is broken, be milled down to-200 orders 65%, and magnetic separation obtains rough concentrate and mine tailing, and coarse concentrate regrinding carefully arrives-200 orders 70%, and magnetic separation obtains concentrate and chats, and mine tailing and chats are mixed into rich titanium material.The separating resulting of the rich titanium material of gained and iron powder is shown in table 4:
Table 4, embodiment 4 half weathering low-grade primary ore deposits, 3 reduction-mill select separating resulting
Embodiment 5 prepares the rich titanium material of solubility in acid and iron powder from the higher-grade beach placer
(TiO2 60.61% with 100 parts of higher-grade beach placers, TFe 21.62%,), with 25 parts of catalyzer (wherein 20 parts in yellow soda ash, 5 parts of catalyzer L) and 18 parts of mixings of solid reductant, granulate with full automatic press briquetting or pelletizer, with the mechanical manipulator alloy tank of packing into, and in tunnel furnace two sections heating reductions (a section 950 ℃, two sections 1200 ℃) and be incubated 5-60 h, obtain reducing material; Reducing material is broken, be milled down to-200 orders 95%, and magnetic separation obtains rough concentrate and mine tailing, and coarse concentrate regrinding carefully arrives-200 orders 98%, and magnetic separation obtains concentrate and chats, and mine tailing and chats are mixed into rich titanium material.The separating resulting of the rich titanium material of gained and iron powder is shown in table 5:
Table 5, embodiment 5 higher-grade beach placers reduction-mill select separating resulting
Embodiment 6 therefrom prepares the rich titanium material of solubility in acid and iron powder in the grade beach placer
(TiO2 53.94% with 100 parts of higher-grade beach placers, TFe 25.28%,), with 8 parts of catalyzer L and 18 parts of mixings of solid reductant, granulate with full automatic press briquetting or pelletizer, with the mechanical manipulator alloy tank of packing into, and two sections intensification (a section 1000 ℃, two sections 1200 ℃) are reduced in tunnel furnace, and be incubated 5～60 h, obtain reducing material; Reducing material is broken, be milled down to-200 orders 95%, and magnetic separation obtains rough concentrate and mine tailing, and coarse concentrate regrinding carefully arrives-200 orders 98%, and magnetic separation obtains concentrate and chats, and mine tailing and chats are mixed into rich titanium material.The separating resulting of the rich titanium material of gained and iron powder is shown in table 6:
Grade beach placer reduction-mill selects separating resulting among table 6, the embodiment 6
Embodiment 7 prepares the rich titanium material of solubility in acid and iron powder from low-grade beach placer
(TiO2 41.61% with 100 parts of low-grade beach placers, TFe 42.68%,), with 15 parts in sodium-chlor and 18 parts of mixings of solid reductant, granulate with full automatic press briquetting or pelletizer, with the mechanical manipulator alloy tank of packing into, and in tunnel furnace two sections heating reductions (a section 1000 ℃, two sections 1200 ℃), and be incubated 5～60 h, obtain reducing material; Reducing material is broken, be milled down to-200 orders 95%, and magnetic separation obtains rough concentrate and mine tailing, and coarse concentrate regrinding carefully arrives-200 orders 98%, and magnetic separation obtains concentrate and chats, and mine tailing and chats are mixed into rich titanium material.The separating resulting of the rich titanium material of gained and iron powder is shown in table 7:
Table 7, embodiment 7 low-grade beach placer reduction-mills select separating resulting
Claims (5)
1. the tunnel kiln reduction mill selects the rich titanium material of the standby solubility in acid of legal system and iron powder novel process; it is characterized in that: the tunnel kiln reduction mill of application autonomous research and development selects method in the processing of the ilmenite concentrate of dissimilar and grade; selection and integrated coupling by temperature-gradient method calcining system, different catalysts; guarantee reduction temperature smooth and easy carrying out under 950～1200 ℃, realize that rich titanium item position, yield, acidolysis rate and iron powder grade, yield reach the desired technico-economical comparison of rower and be respectively:
The tunnel kiln reduction mill selects method to prepare the technico-economical comparison of rich titanium material and iron powder from dissimilar grade ilmenite concentrate
The present invention has kept not only that the titanium content that electric furnace process has is high, technique simple, the three wastes are processed less, byproduct directly utilizes advantages of higher, and can significantly reduce energy consumption, the byproduct cost performance promotes, not restricted by resources supplIes, the rich titanium material of the production of suiting measures to local conditions, gathering materials on the spot, a kind of new industrialization method and the technique of having opened up for enlarging China rich titanium material production; Reached the following functions target: the one, for having low-grade ilmenite concentrate (concentrate contains TiO2＜40%, the TFe＞30%) resource (comprise primary ore, half weathered ore, beach placer and select factory's chats etc.) of a large amount of fine grain teeth cloths, difficult choosing both at home and abroad, and the area of short of electricity or electricity price costliness and country provide a new industrialization method that fully utilizes efficiently, economically ilmenite concentrate; The 2nd, for the characteristics of different ilmenite concentrates, adopt different firing temperature systems and different catalysts to select and integrated coupling, the firing temperature of ilmenite concentrate is down to 950 ℃～1200 ℃ by original 1280 ℃, obtain under the acidolysis rate high rich titanium material and high grade iron vermicelli spare guaranteeing, guarantee the smooth and easy of production process, provide a kind of novel process for domestic and international all types ilmenite concentrate prepares rich titanium material; The 3rd, with independent research tunnel furnace three large patented technologies: high-density mouldenpress briquetting, alloy tank charging and fuel manipulator crane tool change into the processing that merit is applied to ilmenite concentrate, for efficient, economy, environmental protection prepare the new shortcut that rich titanium material provides quick realization industrialization.
2. described tunnel kiln reduction mill selects the rich titanium material of the standby solubility in acid of legal system and iron powder novel process according to claim 1, it is characterized in that
Be technico-economical comparison and the functional objective that realizes that the present invention will reach, the technical process of implementing comprises automaticmachines batching, batch mixing, briquetting or granulation, piling, tinning, two sections heating reductions of tunnel furnace, mechanical discharging, ore grinding, magnetic separation separating step and device, guarantees that process flow operation is smooth and easy.
3. described tunnel kiln reduction mill selects the rich titanium material of the standby solubility in acid of legal system and iron powder novel process according to claim 1～2, it is characterized in that batching: by weight ratio with 100 parts in ore deposit, with 5～20 parts of catalyzer and 10～30 parts of mixings of solid reductant; Wherein, described mineral are primary ore, or half weathering primary ore or beach placer, wherein said catalyzer is sodium-chlor, yellow soda ash, is market newly-increased catalyzer L on sale in addition, the selection of three kinds of catalyzer and consumption are according to ore type, resource and customer requirements rational Match are determined then and there, have cooling, flux, grain growth, strengthen the functional effect that ferrotitanium separates; Wherein said solid reductant is at least a in hard coal, broken Jiao, refinery coke, brown coal, the coke etc., or in conjunction with local resources, chooses one nearby wantonly.
4. described tunnel kiln reduction mill selects the rich titanium material of the standby solubility in acid of legal system and iron powder novel process according to claim 1～3, it is characterized in that charging, reduction: with the ingredients mixture briquetting behind the mixing or granulation or powder tinning, mechanical manipulator pushes in the tunnel furnace, the temperature-gradient method reductive firing, temperature is controlled at 950～1200 ℃ and be incubated 5～60h, obtains reducing material; Wherein said segmentation calcining system refers to be incubated for some time at 950～1000 ℃ first, temperature is risen to 1150～1200 ℃ again, and insulation for some time, the temperature control time is selected according to dissimilar concentrate test; Wherein charging can be adopted conventional containers, such as the silicon carbide tank etc.; Below 1100 ℃, consider heat transfer property and the resistance to elevated temperatures of container, preferentially select the heating resisting metal tank; The material of wherein said metal tin can adopt conventional refractory alloy, as: heat-resistance stainless steel etc.
5. described tunnel kiln reduction mill selects the rich titanium material of the standby solubility in acid of legal system and iron powder novel process according to claim 1～4, it is characterized in that the mill choosing separates: will, magnetic separation separation broken, levigate from the reducing material of tunnel furnace mechanical relief, obtain rich titanium material and iron powder product; Wherein said levigate, magnetic separation adopts the grinding machine length-to-diameter ratio large, and medium is that 4～15 millimeters beads open circuit wet types mills select flow process; Wherein the rich titanium material of magnetic separation gained is decided TiO on type, grade, processing parameter and the customer requirements of ilmenite concentrate
2Grade 67～77%, yield 90～99%, acidolysis rate 92～98% is the high quality raw material of sulfate process titanium dioxide; The TFe grade 86 ~ 94% of gained iron powder, yield 84～96%, can be directly as the reductive agent of chemical industry use or briquetting after be used for the raw material of Electric furnace steel making, or after the essence reduction for powdered metal parts processed etc., realize the diversity of purposes, the pig iron cost performance of smelting than electric furnace process is high.
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| CN103433496A (en) * | 2013-06-25 | 2013-12-11 | 吉林省华兴粉末冶金科技有限公司 | Preparation system of iron powder for powder metallurgy |
| WO2015081775A1 (en) * | 2013-12-05 | 2015-06-11 | 中国科学院过程工程研究所 | Method for comprehensively using high-chromium-content vanadium-titanium magnetite concentrate |
| CN105349783A (en) * | 2015-11-01 | 2016-02-24 | 长沙市东新矿冶科技开发有限公司 | Method for preparing acid-soluble titanium-rich material and iron powder from titanium concentrate |
| CN106191428A (en) * | 2016-07-11 | 2016-12-07 | 攀钢集团攀枝花钢铁研究院有限公司 | Flos Bombacis Malabarici ilmenite concentrate prepares the method for low calcium and magnesium titanium slag |
| CN106399615A (en) * | 2016-05-03 | 2017-02-15 | 玉溪大红山矿业有限公司 | Catalytic reduction furnace for producing low-strength sponge iron |
| CN106399614A (en) * | 2016-05-03 | 2017-02-15 | 玉溪大红山矿业有限公司 | Production method of low-strength reduced iron |
| CN106623956A (en) * | 2017-01-19 | 2017-05-10 | 重庆大学 | Method for producing iron powder through semi-steel granulation method and efficiently utilizing steam |
| CN106735281A (en) * | 2016-12-28 | 2017-05-31 | 重庆大学 | A kind of method that half steel produces iron powder |
| CN107502759A (en) * | 2017-07-10 | 2017-12-22 | 朝阳金河粉末冶金材料有限公司 | The method that tunnel kiln reduction method produces high-grade titanium slag using low-grade rutile |
| CN108217722A (en) * | 2018-03-02 | 2018-06-29 | 茂名粤桥集团矿业有限公司 | A kind of raising Reductive leaching synthetic rutile TiO2The process of grade |
| CN108396138A (en) * | 2018-04-03 | 2018-08-14 | 北京矿冶科技集团有限公司 | A kind of method of vanadium titano-magnetite concentration and separation |
| CN111304394A (en) * | 2020-02-28 | 2020-06-19 | 东北大学 | Method for separating ferrotitanium from seaside placer by direct reduction-ore grinding magnetic separation |
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| CN103433496A (en) * | 2013-06-25 | 2013-12-11 | 吉林省华兴粉末冶金科技有限公司 | Preparation system of iron powder for powder metallurgy |
| WO2015081775A1 (en) * | 2013-12-05 | 2015-06-11 | 中国科学院过程工程研究所 | Method for comprehensively using high-chromium-content vanadium-titanium magnetite concentrate |
| CN105349783A (en) * | 2015-11-01 | 2016-02-24 | 长沙市东新矿冶科技开发有限公司 | Method for preparing acid-soluble titanium-rich material and iron powder from titanium concentrate |
| CN106399615A (en) * | 2016-05-03 | 2017-02-15 | 玉溪大红山矿业有限公司 | Catalytic reduction furnace for producing low-strength sponge iron |
| CN106399614A (en) * | 2016-05-03 | 2017-02-15 | 玉溪大红山矿业有限公司 | Production method of low-strength reduced iron |
| CN106191428A (en) * | 2016-07-11 | 2016-12-07 | 攀钢集团攀枝花钢铁研究院有限公司 | Flos Bombacis Malabarici ilmenite concentrate prepares the method for low calcium and magnesium titanium slag |
| CN106735281A (en) * | 2016-12-28 | 2017-05-31 | 重庆大学 | A kind of method that half steel produces iron powder |
| CN106623956A (en) * | 2017-01-19 | 2017-05-10 | 重庆大学 | Method for producing iron powder through semi-steel granulation method and efficiently utilizing steam |
| CN106623956B (en) * | 2017-01-19 | 2018-07-06 | 重庆大学 | Half steel shotting produces the method that iron powder and high-efficiency steam utilize |
| CN107502759A (en) * | 2017-07-10 | 2017-12-22 | 朝阳金河粉末冶金材料有限公司 | The method that tunnel kiln reduction method produces high-grade titanium slag using low-grade rutile |
| CN107502759B (en) * | 2017-07-10 | 2019-07-23 | 朝阳金河粉末冶金材料有限公司 | The method that tunnel kiln reduction method produces high-grade titanium slag using low-grade rutile |
| CN108217722A (en) * | 2018-03-02 | 2018-06-29 | 茂名粤桥集团矿业有限公司 | A kind of raising Reductive leaching synthetic rutile TiO2The process of grade |
| CN108396138A (en) * | 2018-04-03 | 2018-08-14 | 北京矿冶科技集团有限公司 | A kind of method of vanadium titano-magnetite concentration and separation |
| CN108396138B (en) * | 2018-04-03 | 2020-11-06 | 北京矿冶科技集团有限公司 | Method for enriching and separating vanadium titano-magnetite |
| CN111304394A (en) * | 2020-02-28 | 2020-06-19 | 东北大学 | Method for separating ferrotitanium from seaside placer by direct reduction-ore grinding magnetic separation |
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