CN107488783B - A kind of preprocess method of ilmenite concentrate - Google Patents

A kind of preprocess method of ilmenite concentrate Download PDF

Info

Publication number
CN107488783B
CN107488783B CN201710780199.8A CN201710780199A CN107488783B CN 107488783 B CN107488783 B CN 107488783B CN 201710780199 A CN201710780199 A CN 201710780199A CN 107488783 B CN107488783 B CN 107488783B
Authority
CN
China
Prior art keywords
ilmenite concentrate
preprocess method
ball
concentrate according
titanium slag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710780199.8A
Other languages
Chinese (zh)
Other versions
CN107488783A (en
Inventor
李凯茂
韩可喜
肖军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pangang Group Research Institute Co Ltd
Original Assignee
Pangang Group Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pangang Group Research Institute Co Ltd filed Critical Pangang Group Research Institute Co Ltd
Priority to CN201710780199.8A priority Critical patent/CN107488783B/en
Publication of CN107488783A publication Critical patent/CN107488783A/en
Application granted granted Critical
Publication of CN107488783B publication Critical patent/CN107488783B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/10—Obtaining titanium, zirconium or hafnium
    • C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
    • C22B34/1204—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent
    • C22B34/1209—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 preliminary treatment of ores or scrap to eliminate non- titanium constituents, e.g. iron, without attacking the titanium constituent by dry processes, e.g. with selective chlorination of iron or with formation of a titanium bearing slag

Abstract

The invention belongs to titanium slag technical field of smelting, relate generally to a kind of preprocess method of ilmenite concentrate.The technical problem to be solved by the present invention is to remove the S in ilmenite concentrate, ilmenite concentrate is enable to function well as the raw material of smelting titanium slag.The technical solution of present invention solution above-mentioned technical problem, comprising the following steps: ilmenite concentrate is classified after oxidizing roasting, and the material of+200 mesh of granularity is directly collected for use as smelting titanium slag raw material；The material of -200 mesh of granularity carries out pelletizing, is used as smelting titanium slag raw material after gained green-ball is dry.The method of the present invention can remove the S in ilmenite concentrate, and gained ilmenite concentrate has the advantages that for smelting titanium slag to environmental benefits.

Description

A kind of preprocess method of ilmenite concentrate
Technical field
The invention belongs to titanium slag technical field of smelting, relate generally to a kind of preprocess method of ilmenite concentrate.It relates generally to pair The ilmenite concentrate containing S higher is pre-processed.
Background technique
In recent years, environmental protection is constantly paid attention to country, selects a kind of cleaning, environmentally friendly technique, is the following enterprise Develop inexorable trend.Ilmenite concentrate is mainly used for sulfate process titanium dioxide and titanium slag is smelted.Since titanium slag smelting is remote to ilmenite concentrate demand Much smaller than sulfate process titanium dioxide demand, therefore high-quality ilmenite concentrate is preferentially sold to titanium white enterprise, this certainly will influence titanium slag smelting pair Ilmenite concentrate supply.For this purpose, titanium slag smelting enterprise would generally select some ilmenite concentrates inferior to carry out smelting titanium slags, for example, S content compared with High ilmenite concentrate.
Following problem can be brought since the higher ilmenite concentrate of S content directly enters furnace smelting titanium slag, 1. SO in flue gas2Content Exceeded, 2. slag iron separation is bad, and 3. the duration of heat is long, and 4. the sistent foam slag time is long, and 5. tapping temperature is high, 6. the byproduct pig iron The middle higher sales difficulty of S content, this series of problems seriously affect enterprise and normally produce.
Summary of the invention
The present invention provides a kind of preprocess methods of ilmenite concentrate.This method can remove S most in ilmenite concentrate, Influence of the S to process flow, has many advantages, such as to environmental benefits when to reduce subsequent smelting titanium slag.
The present invention provides a kind of preprocess methods of ilmenite concentrate.Method includes the following steps: ilmenite concentrate is roasted through oxidation It is classified after burning, the material of+200 mesh of granularity is directly collected for use as smelting titanium slag raw material；The material of -200 mesh of granularity carries out pelletizing, institute It is used as smelting titanium slag raw material after obtaining green-ball drying.
Preferably, in the preprocess method of above-mentioned ilmenite concentrate, the ilmenite concentrate comes from iron tailings of low-grade vanadium titano.It is described Ilmenite concentrate main component are as follows: TiO244.5~46.5%, S 0.3~1.2%.
Preferably, in the preprocess method of above-mentioned ilmenite concentrate, the oxidizing roasting temperature is 950~1050 DEG C, and the time is 0.5~1h.
Wherein, in the preprocess method of above-mentioned ilmenite concentrate, the pelletizing uses disk pelletizing.
Wherein, in the preprocess method of above-mentioned ilmenite concentrate, the binder that the pelletizing uses is methylcellulose.
Further, in the preprocess method of above-mentioned ilmenite concentrate, the weight ratio of the material and methylcellulose is 100 ﹕ 0.6~1.
Specifically, the green-ball meets 0.5/ meter of drop strength >=3 time, individually in the preprocess method of above-mentioned ilmenite concentrate Compression strength >=4N.
Preferably, in the preprocess method of above-mentioned ilmenite concentrate, the green-ball is dry to pulverization rate≤3%.The pulverization rate Refer to the total yield of -200 mesh.
Preferably, in the preprocess method of above-mentioned ilmenite concentrate, the temperature of the drying is 200~300 DEG C, the time 40~ 60min。
The method of the present invention can carry out desulfurization to the higher ilmenite concentrate containing S, and what is generated during oxidizing roasting contains titanium dioxide The exhaust gas of the ingredients such as sulphur, sulfurous organic compound can carry out processing through the mode burnt and alkali cleaning combines to be stripped of sulphur；Then oxygen Change the roasting biggish material of granularity and continue directly to smelting titanium slag raw material, granularity is lesser in order to avoid the pollution of dust carries out it Smelting titanium slag raw material is re-used as after pelletizing.Original by the pretreated ilmenite concentrate of the method for the present invention as subsequent smelting titanium slag Material, eliminates influence of the S to smelting, to have the advantages that equipment, environmental-friendly, and the titanium slag quality that smelting is prepared It is excellent, the raw materials such as subsequent titanium dioxide can be functioned well as.
Specific embodiment
A kind of pretreated method of ilmenite concentrate, this method are divided into the step such as oxidizing roasting, sieve classification, disk pelletizing, drying It is rapid:
1) oxidizing roasting
Ilmenite concentrate is handled using oxidizing roasting mode and removes contained S, oxidation process is generated to be had containing sulfur dioxide, sulfur-bearing The exhaust gas of the ingredients such as machine object, organic volatile, which can be used burning and alkali cleaning fit system is handled；
Preferably, 950~1050 DEG C of the temperature of oxidizing roasting, oxidization time are 0.5~1h.
2) sieve classification process
Due to there is partial material granularity thinner after oxidizing roasting, being directly used as smelting titanium slag raw material, there are dust pollutions, difficulty The problems such as operation, so need to sieve to oxidizing roasting resulting material ,+200 mesh material of granularity is straight as smelting titanium slag raw material It taps into electric furnace smelting；Granularity is further used as smelting titanium slag raw material after -200 mesh material disk pelletizings；
3) disk pelletizing process
- 200 mesh materials are subjected to disk pelletizing, material and binder methylcellulose weight ratio are 100 ﹕ 0.6~1；First Base cellulose is that binder can play the role of skeleton, bonding, and pulverization rate is low, does not influence the subsequent ingredient of product；
4) baking process
Disk pelletizing obtains to green-ball is drying to pulverization rate≤3% through three-layer network, and the pulverization rate refers to that -200 mesh are total Yield, drying gained ball be used as raw materials for metallurgy.
Preferably, drying temperature is 200~300 DEG C, 40~60min of time.
In the method for the present invention, on the one hand ilmenite concentrate reduces S content in ilmenite concentrate after oxidizing roasting, is used as smelting titanium slag When raw material, SO in flue gas is greatly reduced2Content is discharged, and S content reduces in the pig iron, is conducive to slag iron separation, tapping temperature drop Low, byproduct is easily sold；Another aspect ilmenite concentrate structure changes, and reaction speed is accelerated, and when being used as smelting titanium slag raw material, has Conducive to shortening the heat.So the ilmenite concentrate after oxidizing roasting can function well as raw materials for metallurgy.
In the method for the present invention, since ilmenite concentrate is after oxidizing roasting, part mine has dusting to a certain degree, if directly smelted Titanium slag, is bound to cause dust pollution, equally also reduces titanium yield.So the method for the present invention to the material after oxidizing roasting into The oversize (i.e.+200 mesh) of row sieve classification, 200 mesh screens can be smelted directly as raw materials for metallurgy；200 mesh screens Screenings (i.e. -200 mesh) is since granularity is thinner, and being directly used as raw materials for metallurgy will cause dust pollution and titanium loss, so first making Ball is further used as raw materials for metallurgy.
Embodiment 1
Ilmenite concentrate (wherein S >=0.3%) is through oxidizing roasting, and wherein maturing temperature is 950 DEG C, and calcining time 1h is obtained S content≤0.18% in ilmenite concentrate after oxidation；Titanium essence after obtaining the oxidation of+200 mesh of granularity, -200 mesh after screened classification Mine, after the ilmenite concentrate after the oxidation of -200 mesh is mixed by mine and methylcellulose weight ratio for 100 ﹕ 0.6, on disc balling machine Pelletizing obtains green-ball, and green ball strength index is drop strength (0.5/ meter) average out to 3 times, and compression strength average out to 6N/, Green-ball carries out three-layer network band and roasts 60min in 200 DEG C of drying, and gained ball pulverization rate is 3%.
Smelting titanium slag, SO in flue gas are carried out using the pretreated ilmenite concentrate of the present embodiment2≤200mg/NM3, meet environmental protection Discharge standard.
Embodiment 2
Ilmenite concentrate (wherein S >=0.3%) is through oxidizing roasting, and wherein maturing temperature is 1050 DEG C, and calcining time 0.5h is obtained S content≤0.1% in ilmenite concentrate after to oxidation；Titanium essence after obtaining the oxidation of+200 mesh of granularity, -200 mesh after screened classification Mine, after the ilmenite concentrate after the oxidation of -200 mesh is mixed by mine and methylcellulose weight ratio for 100 ﹕ 0.6, on disc balling machine Pelletizing obtains green-ball, and green ball strength index is drop strength (0.5/ meter) average out to 3 times, and compression strength average out to 6N/, Green-ball carries out three-layer network band and roasts 60min in 200 DEG C of drying, and gained ball pulverization rate is 3%.
Smelting titanium slag, SO in flue gas are carried out using the pretreated ilmenite concentrate of the present embodiment2≤200mg/NM3, meet environmental protection Discharge standard.
Embodiment 3
Ilmenite concentrate (wherein S >=0.3%) is through oxidizing roasting, and wherein maturing temperature is 1050 DEG C, and calcining time 0.5h is obtained S content≤0.1% in ilmenite concentrate after to oxidation；Titanium essence after obtaining the oxidation of+200 mesh of granularity, -200 mesh after screened classification Mine, after the ilmenite concentrate after the oxidation of -200 mesh is mixed by mine and methylcellulose weight ratio for 100 ﹕ 0.6, on disc balling machine Pelletizing obtains green-ball, and green ball strength index is drop strength (0.5/ meter) average out to 6 times, and compression strength average out to 10N/, Green-ball carries out three-layer network band and roasts 40min in 300 DEG C of drying, and gained ball pulverization rate is 2%.
Smelting titanium slag, SO in flue gas are carried out using the pretreated ilmenite concentrate of the present embodiment2≤200mg/NM3, meet environmental protection Discharge standard.
Embodiment 4
Ilmenite concentrate (wherein S >=0.3%) is through oxidizing roasting, and wherein maturing temperature is 1050 DEG C, and calcining time 0.5h is obtained S content≤0.1% in ilmenite concentrate after to oxidation；Titanium essence after obtaining the oxidation of+200 mesh of granularity, -200 mesh after screened classification Mine, after the ilmenite concentrate after the oxidation of -200 mesh is mixed by mine and methylcellulose weight ratio for 100 ﹕ 0.6, on disc balling machine Pelletizing obtains green-ball, and green ball strength index is drop strength (0.5/ meter) average out to 6 times, and compression strength average out to 10N/, Green-ball carries out three-layer network band and roasts 60min in 250 DEG C of drying, and gained ball pulverization rate is 1%.
Smelting titanium slag, SO in flue gas are carried out using the pretreated ilmenite concentrate of the present embodiment2≤200mg/NM3, meet environmental protection Discharge standard.

Claims (11)

1. the preprocess method of ilmenite concentrate, it is characterised in that: the following steps are included: ilmenite concentrate is classified after oxidizing roasting, granularity+ The material of 200 mesh is directly collected for use as smelting titanium slag raw material；The material of -200 mesh of granularity carries out pelletizing, uses after gained green-ball is dry Make smelting titanium slag raw material；When pelletizing, the binder that pelletizing uses is methylcellulose, the weight of the material and methylcellulose Than for 100 ﹕ 0.6~1；The temperature of the drying is 200~300 DEG C, 40~60min of time.
2. the preprocess method of ilmenite concentrate according to claim 1, it is characterised in that: the ilmenite concentrate comes from v-ti magnetite Mine iron selection tailings.
3. the preprocess method of ilmenite concentrate according to claim 1 or 2, it is characterised in that: the ilmenite concentrate main component Are as follows: TiO2 44.5~46.5%, S 0.3~1.2%.
4. the preprocess method of ilmenite concentrate according to claim 1 or 2, it is characterised in that: the oxidizing roasting temperature is 950~1050 DEG C, the time is 0.5~1h.
5. the preprocess method of ilmenite concentrate according to claim 3, it is characterised in that: the oxidizing roasting temperature is 950 ~1050 DEG C, the time is 0.5~1h.
6. the preprocess method of ilmenite concentrate according to claim 1 or 2, it is characterised in that: the pelletizing is made using disk Ball.
7. the preprocess method of ilmenite concentrate according to claim 3, it is characterised in that: the pelletizing uses disk pelletizing.
8. the preprocess method of ilmenite concentrate according to claim 1 or 2, it is characterised in that: the green-ball meets 0.5/ meter Drop strength >=3 time, single compression strength >=4N.
9. the preprocess method of ilmenite concentrate according to claim 3, it is characterised in that: the green-ball meets 0.5/ meter and falls Intensity >=3 time, single compression strength >=4N.
10. the preprocess method of ilmenite concentrate according to claim 1 or 2, it is characterised in that: the green-ball is dry to dusting Rate≤3%.
11. the preprocess method of ilmenite concentrate according to claim 3, it is characterised in that: the green-ball is dry to pulverization rate ≤3%。
CN201710780199.8A 2017-09-01 2017-09-01 A kind of preprocess method of ilmenite concentrate Active CN107488783B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710780199.8A CN107488783B (en) 2017-09-01 2017-09-01 A kind of preprocess method of ilmenite concentrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710780199.8A CN107488783B (en) 2017-09-01 2017-09-01 A kind of preprocess method of ilmenite concentrate

Publications (2)

Publication Number Publication Date
CN107488783A CN107488783A (en) 2017-12-19
CN107488783B true CN107488783B (en) 2019-08-13

Family

ID=60651067

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710780199.8A Active CN107488783B (en) 2017-09-01 2017-09-01 A kind of preprocess method of ilmenite concentrate

Country Status (1)

Country Link
CN (1) CN107488783B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103834802A (en) * 2014-03-27 2014-06-04 攀枝花一立矿业股份有限公司 Titanium pellet for smelting high titanium slag and preparation method thereof
WO2014136901A1 (en) * 2013-03-06 2014-09-12 東邦チタニウム株式会社 Method for improving quality of titanium-containing feedstock
JP2014234547A (en) * 2013-06-05 2014-12-15 東邦チタニウム株式会社 Raw material for titanium refining and method of producing the same
CN105177281A (en) * 2015-11-05 2015-12-23 攀钢集团攀枝花钢铁研究院有限公司 Method for preparing titanium raw material
CN107083466A (en) * 2017-04-21 2017-08-22 攀钢集团攀枝花钢铁研究院有限公司 A kind of Application way of sefstromite

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014136901A1 (en) * 2013-03-06 2014-09-12 東邦チタニウム株式会社 Method for improving quality of titanium-containing feedstock
JP2014234547A (en) * 2013-06-05 2014-12-15 東邦チタニウム株式会社 Raw material for titanium refining and method of producing the same
CN103834802A (en) * 2014-03-27 2014-06-04 攀枝花一立矿业股份有限公司 Titanium pellet for smelting high titanium slag and preparation method thereof
CN105177281A (en) * 2015-11-05 2015-12-23 攀钢集团攀枝花钢铁研究院有限公司 Method for preparing titanium raw material
CN107083466A (en) * 2017-04-21 2017-08-22 攀钢集团攀枝花钢铁研究院有限公司 A kind of Application way of sefstromite

Also Published As

Publication number Publication date
CN107488783A (en) 2017-12-19

Similar Documents

Publication Publication Date Title
CN102329909B (en) Method for extracting iron particles and zinc powder from dust of steel and iron plant
US9970085B2 (en) Method for producing pellets and method for producing iron-nickel alloy
CN108359792B (en) Acid oxidation pellet of titanium concentrate and vanadium iron concentrate bulk concentrate and preparation method thereof
CN104357657A (en) Method for preparing oxidized pellets from converter dedusting ash
CN107090551A (en) A kind of method of the direct vanadium extraction of vanadium titano-magnetite
CN106337133B (en) The recovery method of titanium vanadium tungsten in a kind of useless SCR denitration
CN109536729A (en) A kind of utilization method for the dedusting ash that smelting iron and steel generates
PH12017500172B1 (en) Method for producing pellets and method for producing iron-nickel alloy
CN102127640A (en) Method for producing moderate ferrovanadium
PH12017500147B1 (en) Method for smelting nickel oxide ore
CN102912209B (en) Process for producing bead ferronickel by rotary hearth furnace through coal-based reduction of red soil nickel oxide ores
CN102643976B (en) Composite additive for producing nickel-iron particles by using laterite, and application method thereof
CN107488783B (en) A kind of preprocess method of ilmenite concentrate
CN113957240A (en) Preparation method of manganese-containing vanadium-titanium magnetite pellet
CN106622640A (en) Treatment system for separating manganese-iron alloy slag iron and separating method
CN107385205A (en) A kind of method and system for producing silicochromium
RU2308490C1 (en) Blast furnace smelting method
CN106191428A (en) Flos Bombacis Malabarici ilmenite concentrate prepares the method for low calcium and magnesium titanium slag
CN112593048A (en) Semisteel desulfurization method
CN102102138A (en) Method for solving problem of copper segregation in steel
CN105506211B (en) A kind of rotary hearth furnace green-ball preparation method containing iron dust containing
JPS58176108A (en) Fluidized roasting for metal sulfide
CN103468279B (en) System and method for improving hot-state strength of coke of coke dry quenching furnace
CN104694683B (en) Method for improving performance of slag
CN111254279B (en) Vanadium-containing steel slag granulating and sintering method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant