CN108374084A - Production process of high-strength carbon-containing titanium concentrate pellets - Google Patents
Production process of high-strength carbon-containing titanium concentrate pellets Download PDFInfo
- Publication number
- CN108374084A CN108374084A CN201810227549.2A CN201810227549A CN108374084A CN 108374084 A CN108374084 A CN 108374084A CN 201810227549 A CN201810227549 A CN 201810227549A CN 108374084 A CN108374084 A CN 108374084A
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- CN
- China
- Prior art keywords
- ilmenite concentrate
- pelletizing
- high intensity
- carbon containing
- production technology
- 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.)
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Classifications
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- 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
Abstract
The invention discloses a production process of high-strength carbon-containing titanium concentrate pellets, which can prepare the high-strength carbon-containing titanium concentrate pellets through three steps of premixing materials, water spraying pelletizing and wet pellet drying2The problems of reduced grade and corrosion of a sodium-containing binder to smelting equipment occur, and meanwhile, the high-strength carbon-containing titanium concentrate pellet obtained by the production process has the wet pellet falling strength (the height of 0.5m and a steel plate) of more than 10 times, the average falling strength of the wet pellet strength of 9 times and the dry pellet compressive strength of more than 1400N after multiple times of verification, and completely meets the requirements of charging materials of a rotary hearth furnace and a large titanium slag electric furnace; meanwhile, the binder used in the invention mainly comprises cheap sodium humate, starch and the like, so that the production cost is effectively reduced, the bentonite is greatly reduced or even not added, and the grade of the titanium slag is ensured. The invention has simple process and wide application prospect, and is suitable for large-scale popularization and application.
Description
Technical field
The invention belongs to field of metallurgy, more particularly to the production technology of a kind of carbon containing ilmenite concentrate pelletizing of high intensity.
Background technology
The obtained ilmenite concentrate of the method for titanium, due to adding various medicaments in floatation process, ore particle are selected using flotation
Surface nature change is very big, and hydrophobicity is extremely strong, is unfavorable for pelletizing, and wet bulb intensity is low after molding, and difficulty, which meets in production process, transports
With the requirement of production.The moulding process of ilmenite concentrate traditionally generally selects bentonite or waterglass as binder, centainly at
Ball or disk pelletizing are pressed under type pressure.
Binder is made with bentonite, dosage is generally 1.5~3wt%, but since addition is larger, in smelting titanium slag mistake
To the TiO of titanium slag in journey2Content has a significant impact.To smelt TiO2Content calculates for 74wt% acid-dissolved titanium slags, is added
The bentonite of 1.5wt% can make the TiO of titanium slag2Content reduces 2wt% or so；Binder is made with waterglass, usage amount is 5~
6wt% contains a large amount of sodium ion in waterglass, and sodium ion can corrode electric furnace liner in smelting process.
Number of patent application 200610021924.5 discloses《Grate kiln produces high titanium type acid pellet vanadium titanium side
Method》, it is mainly characterized by v-ti magnetite concentrate and common magnetite concentrate by 7:3, on the basis of two kinds of mine gross masses,
By mass percentage, 2wt% is matched outside bentonite, after producing 8~16mm qualification wet bulbs by disc balling machine, is combed in chain
Oxidizing roasting on machine-rotary kiln.V-ti magnetite concentrate TiO selected by the technique210.4wt%, acquired pellet
TiO27.0wt% or so greatly reduces titanium grade, and titanium constituent element can not recycle, and value-added content of product substantially reduces therewith.
Number of patent application 200810212609 discloses《The pelletizing process of vanadium titanium magnetite concentrate Na-activation pelletizing》, main skill
Art feature：The vanadium titano-magnetite that -200 mesh of granularity is accounted for 70wt% adds a certain amount of sodium salt, and matches 0.04~0.10wt%'s outside
High-molecular organic adhesive butt mixing is moistened by ball mill and is ground, and then pelletizing, obtains 8~10mm wet bulbs.The balling process uses
High-molecular organic adhesive ensures that wet bulb intensity and 0.04~0.1wt% of addition, mixed material also need profit grinding process, intensity
Only 4~5 times/.Pelletizing is of high cost, and balling-up effect is not high.
Number of patent application 200910176897.2 discloses《The pelletizing process and pellet binder of ilmenite concentrate》, main skill
Art feature：By -0.075mm account for organic binder outside the ilmenite concentrate powder of total weight 15wt% or more with 2~4wt% and 5~
20wt% carbonaceous reducing agents uniformly mix, and mixture is pressed into the ball of 20~60mm of grain size under the pressure of 15~20MPa, with
Dry 60~180min at 150~350 DEG C afterwards.Binder used in the pressure ball is compound, the binder of several organic binders
Cost of material is relatively high and addition is higher, causes balling-up binder cost excessively high, and in addition globulation needs 15~20MPa
Briquetting pressure keeps 0.5~1s, does not refer to that can wet bulb carry out in wet bulb quality index and production process in a particular embodiment
Have bad luck number.
Invention content
To overcome the above in the prior art insufficient or defect, the present invention provides it is a kind of it is simple for process, of low cost, at
The high carbon containing ilmenite concentrate pelletizing production technique of ball intensity.Obtained carbon containing ilmenite concentrate pelletizing can directly be turned through the invention
Bottom stove and large-scale titanium slag electric furnace are smelted, and the grade of titanium slag can be effectively ensured during smelting titanium slag.
The technical solution used in the present invention is：A kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity, including it is as follows
Step：
1) premixing of material：By ilmenite concentrate, carbonaceous reducing agent and binder premix 2~5min, add water wet mixing 3~
10min obtains mixed material；
2) water spray pelletizing：It will coordinate again through the said mixture material obtained by step 1) and spray water, and be rolled on disc balling machine
It is dynamic, obtain wet bulb；
3) wet bulb is dried：It will be dried through wet bulb obtained by step 2), you can obtain the carbon containing ilmenite concentrate pelletizing of high intensity.
In the pre-mixing process of above-mentioned material, first by ilmenite concentrate, carbonaceous reducing agent and powdery compound binding agent premix 2~
5min (4min is preferred) then adds 3~10min of water wet mixing (6~8min is preferred)；Or first by ilmenite concentrate and carbonaceous reducing agent
Premix 2~5min (4min be preferred), add configured 3~10min of organic adhesive agent solution wet mixing (6~8min be it is excellent
Choosing)；
As being further improved for said program, the ilmenite concentrate is described by vanadium iron mine or vanadium titano-magnetite sorting gained
TiO in ilmenite concentrate2Content >=44%, and the grain size of 60% ilmenite concentrate described above is -0.074mm.
As being further improved for said program, the carbonaceous reducing agent is 10~20wt% of ilmenite concentrate with dosage,
13~18wt% is preferred.
As being further improved for said program, the carbonaceous reducing agent includes the anthracite of ash content≤15wt%,
In, the anthracitic grain sizes of 90wt% or more are -0.074mm.
As being further improved for said program, the binder includes organic binder and compound binding agent.
As being further improved for said program, the organic binder includes organic binder butt.
As being further improved for said program, the organic binder butt includes polyvinyl alcohol, sodium humate and shallow lake
At least one of dried bean noodles base, with 0.01~0.05wt% that dosage is ilmenite concentrate.
As being further improved for said program, the compound binding agent is by being 6~100 by mass ratio:100 have
Machine binder butt mixes gained, grain size≤0.35mm of the compound binding agent with bentonite, and it is ilmenite concentrate with dosage
0.05~0.1wt% of quality.
As being further improved for said program, the water spray pelletizing is by that will be mixed on the balling disk (-sc) of disc balling machine
It closes material and rolls the pelletizing that 10~18mm is made, water spray is 10~20wt% of ilmenite concentrate quality, and 13~18wt% is preferred.
As being further improved for said program, the wet bulb drying process is the drying equipment using this field routine,
And temperature is controlled at 105~350 DEG C, a length of 45~120min when dry.
The beneficial effects of the invention are as follows：The present invention provides a kind of production technologies of the carbon containing ilmenite concentrate pelletizing of high intensity, adopt
Can effectively avoid only with the single binder of bentonite or with mine with the pelletizing production technique of the present invention leads to TiO2Grade drops
There is the problem of erosion of smelting equipment in low, binder containing sodium, while using the carbon containing titanium of high intensity obtained by above-mentioned production technology
Not only wet bulb fall strength of briquette (0.5m height, steel plate) averagely falls at 10 times or more through multiple authentication wet bulb intensity Concentrate Pellet
Intensity 9 times, dry bulb compression strength 1400N or more is fallen, rotary hearth furnace is fully met and large-scale titanium slag electric furnace enters the requirement of furnace charge；Simultaneously
Binder used in the present invention effectively reduces production cost based on cheap sodium humate and starch etc., also greatly reduces very
To bentonite is no longer added, the grade of titanium slag ensure that.Preparation process of the present invention is simple, is suitable for industrialized production, before
Scape is extensive, is suitable for large-scale promotion and application.
Specific implementation mode
The present invention is specifically described with reference to embodiment, in order to technical field personnel to the present invention
Understand.It is necessary to it is emphasized that embodiment is only intended to, the present invention will be further described herein, should not be understood as to this
The limitation of invention protection domain, fields person skilled in the art, according to non-of foregoing invention content to made by the present invention
The modifications and adaptations of matter should still fall within protection scope of the present invention.Mentioned raw materials following simultaneously are unspecified,
For commercial product；The processing step or preparation method not referred in detail be processing step known to a person skilled in the art
Or preparation method.
Embodiment 1
It will be below 200 mesh of granularity and TiO2It is smokeless that 200 mesh or less Jin Te is added in the ilmenite concentrate 2000g that content is 45.79%
Coal 410g, SW/FH-001 compound binding agent butt 11g premix 5min on Hardheim D-74732 batch mixers, are then added
202g water wet mixing 10min carry out continuous filling after material mixing in the disc balling machine of diameter 1m with the speed of rotating speed 18r/min
Water spray pelletizing, each water spray control newly add material in just wetting.This time total water spray 110g of pelletizing, with 9mm and
The mesh screen of 16mm weeds out the wet bulb of grain size≤9mm and grain size >=16mm, by the wet bulb that is left after screening be placed in far infrared
In thermostatic drying chamber, taken out after dry 90min at 110 DEG C, you can obtain embodiment finished product 1.
Embodiment 2
By TiO below 200 mesh of granularity2The ilmenite concentrate 2000g that content is 45.79%, and it is smokeless that 200 mesh or less Jin Te is added
Coal 410g premixes 5min on Hardheim D-74732 batch mixers, and 217g SW/YJ-003 organic adhesive agent solutions are then added
(after being dissolved in water with organic binder butt gained) wet mixing 10min, after material mixing the disc balling machine of diameter 1m with
The speed of rotating speed 18r/min carries out continuous filling water spray pelletizing, and each water spray control is just soaking new plus material, this
The secondary total water spray 100g of pelletizing, with the mesh screen of 9mm and 16mm weed out the wet bulb of grain size≤9mm and grain size >=16mm by through screening
The wet bulb left afterwards is placed in far infrared thermostatic drying chamber, is taken out after dry 90min at 110 DEG C, you can obtain embodiment
Finished product 2.
Embodiment 3
It will be below 200 mesh of granularity and TiO2It is smokeless that 200 mesh or less Jin Te is added in the ilmenite concentrate 2000g that content is 45.79%
Coal 410g, SW/FH-001 organic binder butt 25g premix 5min on Hardheim D-74732 batch mixers, are then added
209g water wet mixing 12min carry out continuous filling after material mixing in the disc balling machine of diameter 1m with the speed of rotating speed 18r/min
Spray water pelletizing, the control of each water spray just wetting newly plus material, this time total water spray 122g of pelletizing, with 9mm and
The mesh screen of 16mm weeds out the wet bulb of grain size≤9mm and grain size >=16mm, by the wet bulb that is left after screening be placed in far infrared
In thermostatic drying chamber, taken out after dry 90min at 110 DEG C, you can obtain embodiment finished product 3.
Embodiment 4
Wet bulb before drying in above-described embodiment 1-3 and the embodiment finished product 1-3 after drying are fallen in 0.5m height
Average drop resistant intensity, pelletizing mean compressive strength etc. be tested for the property, testing result is as shown in table 1：
Wet bulb before being dried in 1 embodiment 1-3 of table and embodiment finished product 1-3 after drying before baking after performance test
Comparison
Above-described embodiment is the preferred embodiment of the present invention, it is all with similar technique of the invention and made by equivalence changes,
The protection category of the present invention should all be belonged to.
Claims (10)
1. a kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity, which is characterized in that include the following steps：
1) premixing of material：Ilmenite concentrate, carbonaceous reducing agent and binder are premixed into 2~5min, add water 3~10min of wet mixing,
Obtain mixed material；
2) water spray pelletizing：It will coordinate again through the said mixture material obtained by step 1) and spray water, and be rolled on disc balling machine, be obtained
To wet bulb；
3) wet bulb is dried：It will be dried through wet bulb obtained by step 2), you can obtain the carbon containing ilmenite concentrate pelletizing of high intensity.
2. a kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity according to claim 1, it is characterised in that：The titanium
Concentrate is obtained by vanadium iron mine or vanadium titano-magnetite sorting, TiO in the ilmenite concentrate2Content >=44wt%, and 60% is described above
The grain size of ilmenite concentrate is -0.074mm.
3. a kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity according to claim 1, it is characterised in that：The carbon
Matter reducing agent is 10~20wt% of ilmenite concentrate with dosage.
4. a kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity according to claim 1 or 3, it is characterised in that：Institute
State the anthracite that carbonaceous reducing agent includes ash content≤15%, wherein 90% or more anthracitic grain size is -0.074mm.
5. a kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity according to claim 1, it is characterised in that：It is described viscous
It includes organic binder and compound binding agent to tie agent.
6. a kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity according to claim 5, it is characterised in that：It is described to have
Machine binder includes organic binder butt.
7. a kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity according to claim 5 or 6, it is characterised in that：Institute
It includes at least one of polyvinyl alcohol, sodium humate and starch on dry basis to state organic binder butt, is ilmenite concentrate with dosage
0.01~0.05wt%.
8. a kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity according to claim 5, it is characterised in that：It is described multiple
It is by being 6~100 by mass ratio to close binder:100 organic binder butt mixes gained with bentonite, described compound viscous
Grain size≤0.35mm of agent is tied, and it is 0.05~0.1wt% of ilmenite concentrate quality with dosage.
9. a kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity according to claim 1, it is characterised in that：The spray
Water pelletizing is that the pelletizing of 10~18mm is made by rolling mixed material on the balling disk (-sc) of disc balling machine, wherein water spray
Amount is 10~20wt% of ilmenite concentrate quality.
10. a kind of production technology of the carbon containing ilmenite concentrate pelletizing of high intensity according to claim 1, it is characterised in that：It is described
The temperature of wet bulb drying is 105~350 DEG C, a length of 45~120min when dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810227549.2A CN108374084B (en) | 2018-03-20 | 2018-03-20 | Production process of high-strength carbon-containing titanium concentrate pellets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810227549.2A CN108374084B (en) | 2018-03-20 | 2018-03-20 | Production process of high-strength carbon-containing titanium concentrate pellets |
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| CN108374084A true CN108374084A (en) | 2018-08-07 |
| CN108374084B CN108374084B (en) | 2019-10-11 |
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| CN201810227549.2A Active CN108374084B (en) | 2018-03-20 | 2018-03-20 | Production process of high-strength carbon-containing titanium concentrate pellets |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266848A (en) * | 2018-11-29 | 2019-01-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Prepare the binder of oxidation of chromite pelletizing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109266848A (en) * | 2018-11-29 | 2019-01-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Prepare the binder of oxidation of chromite pelletizing |
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| CN108374084B (en) | 2019-10-11 |
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