CN102787188A - Process for smelting vanadium-containing pig iron by high-silicon vanadium titanomagnetite concentrate powder - Google Patents
Process for smelting vanadium-containing pig iron by high-silicon vanadium titanomagnetite concentrate powder Download PDFInfo
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- CN102787188A CN102787188A CN2011101313457A CN201110131345A CN102787188A CN 102787188 A CN102787188 A CN 102787188A CN 2011101313457 A CN2011101313457 A CN 2011101313457A CN 201110131345 A CN201110131345 A CN 201110131345A CN 102787188 A CN102787188 A CN 102787188A
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Abstract
The invention provides a process for smelting vanadium-containing pig iron by high-silicon vanadium titanomagnetite concentrate powder, which comprises the following steps: preparing raw material particles with a particle size of 5-150 mm of carbon-containing cold-bonded pellets (blocks), sinter, roasted acidic pellets, and metallized pellets (blocks) from the concentrate powder, mixing the raw material particles with a solvent and a reducing agent, smelting in a smelting furnace to obtain vanadium-containing pig iron; according to the different components of the raw material particles, the solvent ratio during smelting is that raw material particle:limestone:dolomite:fluorite = 1:(0-0.25):(0-0.15):(0-0.10); the material blending principle is that the CaO:SiO2:TiO2 in the slag is controlled to be within a weight ratio range of 1:(0.5-1.2):(0.6-1.8); the invention solves the problem of difficult smelting of the vanadium titanomagnetite concentrate powder with high silicon, high titanium, and low iron; the smelting furnace relates to a blast furnace, an open hearth furnace, a submerged arc furnace and a hot blast cupola.
Description
Technical field:
The present invention relates to smelting iron and steel technology, utilize siliceous height, v-ti magnetite tantalite power melting pig iron containing vanadium that iron content is low, belong to field of metallurgy.
Background technology
China's vanadium titano-magnetite aboundresources, bigger vanadic titanomagnetite deposit has all obtained effective development and use.Geographic v-ti magnetite tantalite power ferrous grades such as area, Chengde and Sichuan Flos Bombacis Malabarici are high, and siliceous composition is low, general TFe>=61%; SiO
2≤1.5%; At present, this common v-ti magnetite tantalite power has obtained rational comprehensive utilization, and technical matters is that vanadium-bearing hot metal is vanadium extraction again by the blast-furnace smelting pig iron containing vanadium, steel-making again after the vanadium extraction, and technical matters is very ripe.
But, the geographic ultralow article raw ore in Chaoyang, the characteristics that contain the v-ti magnetite tantalite power that institute's magnetic separation obtains are that siliceous height, titaniferous are high, ferrous grade is low, contain vanadium also than higher.General full iron about 45% is difficult to arrive more than 55%; About silica 1 0%, generally be higher than 3%; Vanadium Pentoxide in FLAKES 1.0-2.0%.Up to the present, this special v-ti magnetite tantalite power does not have special comprehensive utilization technique technology, does not have the selling market.The enterprise of common v-ti magnetite tantalite power ironmaking does not use, and does not more have to use specially the enterprise of this iron ore extract powder yet.
Because the siliceous height of this tantalite power, titaniferous are high, ferrous grade is low, be used for very difficulty of above-mentioned blast furnace smelting process; But vanadiumcontent is more much higher than the vanadium titano-magnetite vanadiumcontent of general present use, and very high value of exploiting and utilizing is arranged, and the technical matters of studying the comprehensive utilization of this ore deposit is very important with unusual reality.
Summary of the invention
The present invention is intended to solve the problem of complex utilization of above-mentioned high silicon vanadium titano-magnetite, and a kind of technology of high silicon v-ti magnetite tantalite power melting pig iron containing vanadium is provided.
Above-mentioned purpose of the present invention is to realize through following technical scheme.
The present invention provides a kind of high silicon v-ti magnetite tantalite power melting pig iron containing vanadium technology, and high silicon v-ti magnetite tantalite power is processed feed particles, mixes by the smelting furnace melting with solvent and reductive agent, obtains pig iron containing vanadium.
Feed particles is meant: carbon containing cooled agglomerated pellet (piece) ore deposit, agglomerate, roasting acidic pellet ore and metallized pellet (piece), grain graininess 5-150 millimeter; Solvent is meant Wingdale (unslaked lime), rhombspar, fluorite; Reductive agent is meant coke, coal.When manufacturing feed particles, can allocate or not allocate into ground flux and reductive agent powder into, thereby obtain the feed particles of heterogeneity constituent element.
According to the difference of feed particles composition constituent element, the flux ratio of allocating into during melting is: feed particles: Wingdale: rhombspar: fluorite=1: (0-0.25): (0-0.15): (0-0.10); Ingredients principle is CaO: SiO in the control slag
2: TiO
2=1: (0.5-1.2): (0.6-1.8) in the percent by weight scope.
Above-mentioned high silicon v-ti magnetite tantalite power melting pig iron containing vanadium technology, said high silicon v-ti magnetite tantalite power, its main chemical compositions scope such as following table:
Above-mentioned high silicon v-ti magnetite tantalite power melting pig iron containing vanadium technology; Said carbon containing cooled agglomerated pellet (piece) ore deposit; Its manufacture craft is: high silicon v-ti magnetite tantalite power mixes with coal (Jiao) powder, calcium lime powder, adds water and stirs, and is pressed into carbon containing cooled agglomerated pellet (piece) ore deposit with ball press or block-making machine; Proportion scale is: high silicon v-ti magnetite tantalite power: coal (Jiao) powder: calcium lime powder=1: (0-0.10): (0.18-0.25).
Above-mentioned high silicon v-ti magnetite tantalite power melting pig iron containing vanadium technology, said agglomerate are meant with sinter machine or local method agglomerating method, with addition of the agglomerate of burnt (coal) powder high-sintering process production; Proportion scale is: high silicon v-ti magnetite tantalite power: coal (Jiao) powder: calcium lime powder=1: (0.02-0.15): (0-0.25).
Above-mentioned high silicon v-ti magnetite tantalite power melting pig iron containing vanadium technology; Said roasting acidic pellet ore and metallized pellet are meant: with high silicon v-ti magnetite tantalite power is raw material, by the roasting acidic pellet ore and the metallized pellet of shaft furnace, rotary kiln, tunnel, rotary hearth furnace production.
Above-mentioned high silicon v-ti magnetite tantalite power melting pig iron containing vanadium technology, said smelting furnace comprises blast furnace, open hearth, the hot stove in ore deposit and blast-heating cupola.
Embodiment
Below in conjunction with specific embodiment the present invention is further explained, the following example does not limit protection scope of the present invention, and all modification and adjustment of making based on inventive concept all belong to protection scope of the present invention.
Among the embodiment, it is listed that the smart efflorescence average group of high silicon vanadium titano-magnetite becomes following table:
With this high silicon v-ti magnetite tantalite power and burnt (coal) powder, lime powder batching; Mixed in 1: 0.05: 0.20 by weight ratio; In stirrer, add water and stir, process 25-35 granularity pelletizing by ball press, warp natural Health preservation after a while obtains the qualified carbon containing cold-consolidated ball nodulizing of intensity.
Simultaneously, be that raw material is with common process production roasting acidic pellet ore with this high silicon v-ti magnetite tantalite power.
Use blast furnace smelting, proportioning raw materials is: carbon containing cold-consolidated ball nodulizing: roasting acidic pellet ore=3: 1; Suitably add a small amount of rhombspar, fluorite; The major components composition is approximately in the control blast-furnace slag: CaO: SiO
2: TiO
2=1: 0.9: 1.5.
Melting gained pig iron containing vanadium, other principal element composition range such as following tables in the iron:
| Element in the iron | C | Si | Ti | V | Mn |
| ％ | 3.0-4.4 | 0.1-1.5 | 0.1-0.8 | 1.0-2.5 | 0.1-2.0 |
The invention solves the problem of the tantalite power infusibility refining that this siliceous height, titaniferous are high, iron content is low.Can production contain vanadium than the higher pig iron, and further vanadium extraction steel-making.
Smelting furnace can be a blast furnace, also can be open hearth, the hot stove in ore deposit and blast-heating cupola.
Claims (6)
1. one kind high silicon v-ti magnetite tantalite power melting pig iron containing vanadium technology, it is characterized in that: said melting technology mainly comprises the steps:
High silicon v-ti magnetite tantalite power is processed feed particles, and feed particles refers to carbon containing cooled agglomerated pellet (piece) ore deposit, agglomerate, roasting acidic pellet ore and metallized pellet (piece);
Feed particles and Wingdale, rhombspar, fluorite are prepared burden, obtain pig iron containing vanadium by the smelting furnace melting;
Composition constituent element according to feed particles is different, and the melting batching is: feed particles: Wingdale: rhombspar: fluorite=1: (0-0.25): (0-0.15): (0-0.10), ingredients principle is CaO: SiO in the control slag
2: TiO
2=1: (0.5-1.2): in the weight ratio scope (0.6-1.8).
2. high according to claim 1 silicon v-ti magnetite tantalite power melting pig iron containing vanadium technology, wherein said high silicon v-ti magnetite tantalite power, its main chemical composition range such as following table:
3. high according to claim 1 silicon v-ti magnetite tantalite power melting pig iron containing vanadium technology; Said carbon containing cooled agglomerated pellet (piece) ore deposit; Its manufacture craft is that high silicon v-ti magnetite tantalite power is mixed with coal (Jiao) powder, calcium lime powder; Add water and stir, be pressed into carbon containing cooled agglomerated pellet (piece) ore deposit with ball press or block-making machine; Proportion scale is: high silicon v-ti magnetite tantalite power: coal (Jiao) powder: calcium lime powder=1: (0-0.10): (0.18-0.25).
4. high according to claim 1 silicon v-ti magnetite tantalite power melting pig iron containing vanadium technology, said agglomerate are meant with sinter machine or local method agglomerating method, with addition of the agglomerate of burnt (coal) powder high-sintering process production; Proportion scale is: high silicon v-ti magnetite tantalite power: coal (Jiao) powder: calcium lime powder=1: (0.05-0.15): (0-0.25).
5. high according to claim 1 silicon v-ti magnetite concentrate powder melting pig iron containing vanadium technology; Said roasting acidic pellet ore and metallized pellet are meant: with high silicon v-ti magnetite tantalite power is raw material, by the roasting acidic pellet ore and the metallized pellet of shaft furnace, rotary kiln, tunnel, rotary hearth furnace production.
6. high according to claim 1 silicon v-ti magnetite concentrate melting pig iron containing vanadium technology, said smelting furnace comprises blast furnace, open hearth, the hot stove in ore deposit and blast-heating cupola.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447545A (en) * | 2013-08-19 | 2013-12-18 | 四川大学 | Method for preparing iron-based friction material by utilizing vacuum carbothermal in-situ reactive sintering from vanadium-titanium magnetite |
| CN107385133A (en) * | 2017-07-24 | 2017-11-24 | 江苏省冶金设计院有限公司 | A kind of smelting process of v-ti magnetite concentrate |
| CN108950112A (en) * | 2018-08-13 | 2018-12-07 | 攀枝花市立宇矿业有限公司 | The method of full vanadium titano-magnetite blast furnace ironmaking |
| CN110129556A (en) * | 2019-06-24 | 2019-08-16 | 东北大学 | A kind of method that sefstromite powder clean and effective utilizes |
| CN110592303A (en) * | 2019-08-16 | 2019-12-20 | 吉林省金源科技有限公司 | Method for smelting vanadium-containing pig iron from vanadium-containing titanomagnetite |
| CN111440988A (en) * | 2020-05-21 | 2020-07-24 | 中冶东方工程技术有限公司 | Silicon-vanadium alloy production method and silicon-vanadium alloy |
-
2011
- 2011-05-20 CN CN2011101313457A patent/CN102787188A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447545A (en) * | 2013-08-19 | 2013-12-18 | 四川大学 | Method for preparing iron-based friction material by utilizing vacuum carbothermal in-situ reactive sintering from vanadium-titanium magnetite |
| CN103447545B (en) * | 2013-08-19 | 2015-07-15 | 四川大学 | Method for preparing iron-based friction material by utilizing vacuum carbothermal in-situ reactive sintering from vanadium-titanium magnetite |
| CN107385133A (en) * | 2017-07-24 | 2017-11-24 | 江苏省冶金设计院有限公司 | A kind of smelting process of v-ti magnetite concentrate |
| CN108950112A (en) * | 2018-08-13 | 2018-12-07 | 攀枝花市立宇矿业有限公司 | The method of full vanadium titano-magnetite blast furnace ironmaking |
| CN110129556A (en) * | 2019-06-24 | 2019-08-16 | 东北大学 | A kind of method that sefstromite powder clean and effective utilizes |
| CN110592303A (en) * | 2019-08-16 | 2019-12-20 | 吉林省金源科技有限公司 | Method for smelting vanadium-containing pig iron from vanadium-containing titanomagnetite |
| CN110592303B (en) * | 2019-08-16 | 2020-09-29 | 吉林省金源科技有限公司 | Method for smelting vanadium-containing pig iron from vanadium-containing titanomagnetite |
| CN111440988A (en) * | 2020-05-21 | 2020-07-24 | 中冶东方工程技术有限公司 | Silicon-vanadium alloy production method and silicon-vanadium alloy |
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Application publication date: 20121121 |