CN103643041A - Novel technology for preparing low vanadium-titanium alloy comminuted steel shot through vanadium and titanium iron concentrate - Google Patents
Novel technology for preparing low vanadium-titanium alloy comminuted steel shot through vanadium and titanium iron concentrate Download PDFInfo
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- CN103643041A CN103643041A CN201310710418.7A CN201310710418A CN103643041A CN 103643041 A CN103643041 A CN 103643041A CN 201310710418 A CN201310710418 A CN 201310710418A CN 103643041 A CN103643041 A CN 103643041A
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Abstract
The invention relates to the technical field of comprehensive utilization of mineral resources and metallurgy, and in particular relates to a novel technology for preparing low vanadium-titanium alloy comminuted steel shot through vanadium and titanium iron concentrate. According to the technical scheme, the novel technology comprises the following steps: reducing vanadium and titanium iron concentrate at 1,200+/30 DEG C by using nontoxic, smell-less and non-corrosive sodium humate as a novel catalyst; carrying out wet-process grinding and selecting on the reduced materials to obtain primary reduced iron powder containing vanadium and titanium; and then refining and reducing for the second time to obtain the low vanadium-titanium alloy comminuted steel shot which has high cost performance and contains 0.3 to 0.4% of V and 0.4 to 0.97% of Ti.
Description
Technical field
The present invention relates to mineral resources comprehensive utilization and metallurgical technology field, be specifically related to sefstromite concentrate and prepare low V-Ti comminuted steel shot new technology.
Background technology
The method of preparing low alloyed steel powder that existing disclosed patent and reported in literature are described is four large classes substantially, be element powder mix method, part prealloy powder method, prealloy powder method and coated composite powder, these methods are all to take multiple carrying out on the metal powder of elementary processing or basis that parent powder is base, by a series of complete processings, make, take mineral products as raw material, by a technical process, directly prepare the technology of low alloyed steel powder, have no any disclosure.
Inventor herein, in 201210257024.6 patents, proposed to prepare the method for novel high-quality particulate microalloy iron powder from sefstromite concentrate, although being a kind of solid solution, it has the micro-high-quality iron powder such as Co, Ni, V, Ti, if prepare low alloyed steel powder, also need to add metal-powder amount, just can reach the component requirement of low alloyed steel powder.Patent 200510022195.0 has proposed a kind of method with pig iron containing vanadium or sponge iron direct melting vanadium alloy steel or V-Ti steel, but make the low V-Ti comminuted steel shot proposing with this patent, also need in spraying gun, alloy molten steel to be carried out to break process with high pressure water or gas.
Since can prepare microalloy iron powder from sefstromite concentrate, can directly prepare low alloyed steel powder? 201210580477.2 " tunnel kiln reduction mill selects legal system for the rich titanium material of solubility in acid and iron powder novel process " that are subject to inventor herein's proposition adopt the inspiration of new catalyst L, if be applied to the processing of sefstromite concentrate, can obtain what effect? through systematic testing, disclosed in sefstromite concentrate reduction process, only add new catalyst L, not only there is good catalysis, and there is the unique technology effect of the low V-Ti comminuted steel shot of preparation that this patent puies forward.
New catalyst L does not disclose its component in 201210580477.2, at this patent, declares and answer auditor's requirement of examination reports for the first time, and simultaneously formally open, its component is Sodium salts humic acids.
Sodium salts humic acids is as flotation reagent, additive, cakingagent is applied to the existing many reports of metallurgical technology field, in process for direct reduction of briquets bound with high molecular substances patent (CN85103346A), disclose as preventing ring formation problem in rotary kiln reduction process, develop the technology that Sodium salts humic acids is used as iron ore pellet binder, but use as catalyzer, still for the first time, as core technology, being applied to directly prepare low alloyed steel powder from sefstromite concentrate is also for the first time, particularly China's vanadium titano-magnetite is extremely abundant, can say inexhaustible, by the enforcement of this patent, be expected to develop into and there are the Ti low alloyed comminuted steel shot of vanadium of Mineral Resources in China characteristic and the series product of sintered metal product thereof.
The molecular formula of Sodium salts humic acids is C
9h
8na
2o
4, nontoxic odorless is corrosion-free, very easily water-soluble.System adopts the natural low magnesium weathered coal of the low calcium of high-quality containing humic acids to refine and form through chemistry, and it is a kind of multi-functional natural organic high-molecular compound, contains hydroxyl, quinonyl, the active group that carboxyl etc. are more, has very large internal surface area, has stronger absorption, exchange, complexing, sequestering power.Sodium salts humic acids is applied and approves in the various fields of national economy.Especially as ceramic additive, dispergator, drilling mud adjusting agent, process water stablizer, cement water reducing agent, boiler detergent, ore floatation agent, waste gas waste water conditioner, water coal oar admixture, coal briquette bond, negative battery plate expanders etc., demonstrate powerful vitality.Secondly, in agricultural, as compound manure, can change Soil structure, farm crop be played to the effect of disease resistance increasing both production and income.In livestock culture as fodder additives, in aquaculture as synergistic agent.Pharmaceutically can make balneation medicament etc.Application in mineral resources comprehensive utilization and metallurgical technology field, also have a lot of potential functions not yet to develop, 201210257024.6 develop a kind of low-temperature reduction titanium wherein and the function of iron, and this patent on this basis, is excavated again a kind of new unique function.
Summary of the invention
Technical problem to be solved by this invention is from sefstromite concentrate, directly to prepare low V-Ti comminuted steel shot new technology.
The technical solution used in the present invention is: with the free from corrosion Sodium salts humic acids of nontoxic odorless as new catalyst, press 100 parts of sefstromite concentrates, 1.5～5 parts of Sodium salts humic acidss, 15～28 parts of batchings of hard coal, mix, briquetting or granulation, tinning enters to imitate tunnel furnace in 1200 ℃ ± 30 ℃ reduction, reducing material is after the choosing of wet type mill, obtain a reduced iron powder containing vanadium, titanium, after secondary reduction, directly make containing the high low V-Ti comminuted steel shot of the cost performance of Fe > 98%, V 0.3～0.4%, Ti 0.4～0.97%, C 0.2～0.4% again.Specifically comprise following implementation step:.
A, batching: by weight ratio 15～25 parts of 100 parts, ore deposit, 1.5～5 parts of catalyzer Sodium salts humic acidss and solid reductants are mixed;
B, charging, reduction: mixture briquetting (or pelletizing) tinning after mixing in a step or directly tinning, Heating temperature to 1200 ℃ ± 30 ℃ be incubated 5h in imitative tunnel furnace then, obtains reducing ingot;
C, mill choosing separation: b step gained reduction ingot is broken, levigate, low intensity magnetic separation is separated, obtains rich vanadium titanium material and a reduced iron powder;
D, secondary reduction: a hydrogen for reduced iron powder (or cracked ammonium) of c step gained carries out secondary reduction as reducing medium, obtains low V-Ti comminuted steel shot.
Wherein, outside described sefstromite concentrate, be also applicable to other many metallic irons concentrate and process;
Wherein, the solid reductant described in a step can be the conventional solid reductant of metallurgy industry, as: in hard coal, broken Jiao, refinery coke, brown coal, coke at least one;
Wherein, tinning container described in b step, can select outside conventional silicon carbide tank, considers heat transfer property and the resistance to elevated temperatures of container, also can adopt heating resisting metal tank to feed; .
Wherein, levigate described in c step, magnetic separation adopts wet grinding low intensity magnetic separation, and mill is elected to be industry and adopts the choosing of open circuit gravity flow mill;
The Powdered Alloy Steel that the present invention makes is containing V 0.3 ~ 0.4%, containing Ti 0.4 ~ 0.97%, containing C 0.2 ~ 0.4%, TFe > 98%.
The present invention compared with prior art, has following technique effect:
1, the new catalyst of Sodium salts humic acids as the separated ferrotitanium vanadium of sefstromite concentrate reduction grinding usingd in the present invention, compare with sodium-chlor, sodium sulfate, sodium carbonate etc., have that consumption is few, ferrotitanium vanadium good separating effect, and the unique function that in sefstromite concentrate, 50～60% vanadium enters a reduced iron powder, for making low V-Ti comminuted steel shot, follow-up secondary reduction created prerequisite.
2, the present invention be take sefstromite concentrate as raw material, in the technical process of effective separation of iron, titanium, vanadium, directly prepares low V-Ti comminuted steel shot, through system development, is expected to form the series product of a class novel alloy comminuted steel shot.
Accompanying drawing explanation
Fig. 1 is the process flow sheet that sefstromite concentrate of the present invention is prepared low V-Ti comminuted steel shot new technology.
Embodiment
Below in conjunction with embodiment, the specific embodiment of the present invention is further described, does not therefore limit the present invention among described scope of embodiments.Sefstromite concentrate multielement analysis the results are shown in Table 1.
Embodiment 1 adopts the inventive method separation of iron and titanium vanadium from sefstromite concentrate
By 100 parts of sefstromite concentrates, mix briquetting with 15 parts of 1.5 parts of Sodium salts humic acidss and solid reductants, then pack reduction tank into, Heating temperature to 1200 ℃ be incubated 5h in imitative tunnel furnace, obtains reducing material; Through broken, be milled down to-200 orders 65%, magnetic separation obtains rough concentrate and mine tailing, coarse concentrate regrinding carefully arrives-200 orders 70%, magnetic separation obtains concentrate and chats, mine tailing and chats are mixed into rich vanadium titanium material.The separating resulting of gained sponge iron and rich vanadium titanium material is as shown in table 2: in a reduced iron powder, TFe content is 89.41%, iron recovery 88.46%; After secondary reduction, it the results are shown in Table shown in 7.
Embodiment 2 adopts the inventive method separation of iron and titanium vanadium from sefstromite concentrate
By 100 parts of sefstromite concentrates, mix briquetting with 15 parts of 3 parts of Sodium salts humic acidss and solid reductants, then pack reduction tank into, Heating temperature to 1200 ℃ be incubated 5h in imitative tunnel furnace, obtains reducing material; Through broken, be milled down to-200 orders 65%, magnetic separation obtains rough concentrate and mine tailing, coarse concentrate regrinding carefully arrives-200 orders 70%, magnetic separation obtains concentrate and chats, mine tailing and chats are mixed into rich vanadium titanium material.The separating resulting of gained sponge iron and rich vanadium titanium material is as shown in table 3: in a reduced iron powder, TFe content is 92.49%, iron recovery 87.39%; After secondary reduction, it the results are shown in Table shown in 7.
Embodiment 3 adopts the inventive method separation of iron and titanium vanadium from sefstromite concentrate
By 100 parts of sefstromite concentrates, mix briquetting with 15 parts of 5 parts of Sodium salts humic acidss and solid reductants, then pack reduction tank into, Heating temperature to 1200 ℃ be incubated 5h in imitative tunnel furnace, obtains reducing material; Through broken, be milled down to-200 orders 65%, magnetic separation obtains rough concentrate and mine tailing, coarse concentrate regrinding carefully arrives-200 orders 70%, magnetic separation obtains concentrate and chats, mine tailing and chats are mixed into rich vanadium titanium material.The separating resulting of gained sponge iron and rich vanadium titanium material is as shown in table 4: in a reduced iron powder, TFe content is 92.44%, iron recovery 85.71%; After secondary reduction, it the results are shown in Table shown in 7.
Embodiment 4 adopts the inventive method separation of iron and titanium vanadium from sefstromite concentrate
By 100 parts of sefstromite concentrates, mix briquetting with 18 parts of 5 parts of Sodium salts humic acidss and solid reductants, then pack reduction tank into, Heating temperature to 1200 ℃ be incubated 5h in imitative tunnel furnace, obtains reducing material; Through broken, be milled down to-200 orders 65%, magnetic separation obtains rough concentrate and mine tailing, coarse concentrate regrinding carefully arrives-200 orders 70%, magnetic separation obtains concentrate and chats, mine tailing and chats are mixed into rich vanadium titanium material.The separating resulting of gained sponge iron and rich vanadium titanium material is as shown in table 5: in a reduced iron powder, TFe content is 92.65%, iron recovery 85.32%; After secondary reduction, it the results are shown in Table shown in 7.
Embodiment 5 adopts the inventive method separation of iron and titanium vanadium from sefstromite concentrate
By 100 parts of sefstromite concentrates, mix briquetting with 28 parts of 5 parts of Sodium salts humic acidss and solid reductants, then pack reduction tank into, Heating temperature to 1200 ℃ be incubated 5h in imitative tunnel furnace, obtains reducing material; Through broken, be milled down to-200 orders 65%, magnetic separation obtains rough concentrate and mine tailing, coarse concentrate regrinding carefully arrives-200 orders 70%, magnetic separation obtains concentrate and chats, mine tailing and chats are mixed into rich vanadium titanium material.The separating resulting of gained sponge iron and rich vanadium titanium material is as shown in table 6: in a reduced iron powder, TFe content is 92.97%, iron recovery 88.30%; After secondary reduction, it the results are shown in Table shown in 7.
Table 1 sefstromite concentrate multielement analysis result (%).
| TFe | TiO 2 | V 2O 5 | SiO 2 | Al 2O 3 | CaO | MgO | Cu | Co | Ni |
| 57.53 | 8.69 | 0.65 | 4.04 | 4.66 | 1.19 | 1.88 | 0.0045 | 0.016 | 0.014 |
Table 2 embodiment 1 sefstromite concentrate reduction-mill selects separating resulting.
Table 3 embodiment 2 sefstromite concentrate reduction-mills select separating resulting.
Table 4 embodiment 3 sefstromite concentrate reduction-mills select separating resulting.
Table 5 embodiment 4 sefstromite concentrate reduction-mills select separating resulting.
Table 6 embodiment 5 sefstromite concentrate reduction-mills select separating resulting.
Table 7 secondary reduction gained Powdered Alloy Steel multielement analysis result (%)
| Powdered Alloy Steel composition | Fe | Ti | V | C | Co | Ni |
| Embodiment 1 | 98.32 | 0.74 | 0.36 | 0.32 | 0.025 | 0.026 |
| Embodiment 2 | 98.25 | 0.87 | 0.42 | 0.26 | 0.024 | 0.026 |
| Embodiment 3 | 98.36 | 0.73 | 0.36 | 0.39 | 0.025 | 0.026 |
| Embodiment 4 | 98.19 | 0.97 | 0.30 | 0.40 | 0.025 | 0.026 |
| Embodiment 5 | 98.68 | 0.41 | 0.41 | 0.35 | 0.025 | 0.026 |
Claims (2)
1. sefstromite concentrate is prepared low V-Ti comminuted steel shot new technology, it is characterized in that adopting the free from corrosion Sodium salts humic acids of nontoxic odorless as new catalyst, press 100 parts of sefstromite concentrates, 1.5～5 parts of Sodium salts humic acidss, 15～28 parts of batchings of hard coal, mix, briquetting or granulation, tinning enters to imitate tunnel furnace in 1200 ℃ ± 30 ℃ reduction, reducing material is after the choosing of wet type mill, obtain containing vanadium, a reduced iron powder of titanium, again after secondary reduction, directly make containing Fe > 98%, V 0.3～0.4%, Ti 0.4～0.97%, the high low V-Ti comminuted steel shot of cost performance of C 0.2～0.4%.
2. sefstromite concentrate is prepared low V-Ti comminuted steel shot new technology according to claim 1, it is characterized in that: using the catalyzer of Sodium salts humic acids as the separated ferrotitanium vanadium of sefstromite concentrate reduction grinding, have that consumption is few, ferrotitanium vanadium good separating effect, and the unique function that in sefstromite concentrate, 50～60% vanadium enters a reduced iron powder, for making low V-Ti comminuted steel shot, follow-up secondary reduction created prerequisite.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109332711A (en) * | 2018-10-29 | 2019-02-15 | 攀枝花市银江金勇工贸有限责任公司 | A kind of vanadium ferrotianium powder producing method |
| CN110656237A (en) * | 2018-08-20 | 2020-01-07 | 朝阳金工钒钛科技有限公司 | Process for directly extracting vanadium by using vanadium-titanium magnetite tunnel kiln |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN110656237A (en) * | 2018-08-20 | 2020-01-07 | 朝阳金工钒钛科技有限公司 | Process for directly extracting vanadium by using vanadium-titanium magnetite tunnel kiln |
| CN109332711A (en) * | 2018-10-29 | 2019-02-15 | 攀枝花市银江金勇工贸有限责任公司 | A kind of vanadium ferrotianium powder producing method |
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