CN103898319B - A kind of preparation method of ilmenite concentrate pelletizing - Google Patents
A kind of preparation method of ilmenite concentrate pelletizing Download PDFInfo
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- CN103898319B CN103898319B CN201210590757.1A CN201210590757A CN103898319B CN 103898319 B CN103898319 B CN 103898319B CN 201210590757 A CN201210590757 A CN 201210590757A CN 103898319 B CN103898319 B CN 103898319B
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- ilmenite concentrate
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Abstract
The invention provides a kind of preparation method of ilmenite concentrate pelletizing, the method comprises: ilmenite concentrate, liquid adhesive and dedusting ash mixed and carry out pelletizing, and wherein, described dedusting ash is the dedusting ash produced in titanium slag electric furnace in the technique of smelting titanium slag.Adopt method provided by the invention can utilize fully titanium slag electric furnace dedusting ash, saved resource and produced good economic benefit, the pelletizing manufactured by method of the present invention, balling ratio is high and ultimate compression strength good.
Description
Technical field
The present invention relates to a kind of method of pelletizing, be specifically related to titanium slag electric furnace dedusting ash manufactures pelletizing method for ilmenite concentrate.
Background technology
In the technique of current production titanium slag, usual employing large-scale titanium slag electric furnace is smelted, and can produce a large amount of dedusting ash in titanium slag electric furnace, when particularly entering in the raw material of stove to contain fine powder material, a large amount of fine powder material can enter dust-removal system with furnace gas, and the amount of the dedusting ash of generation is larger.Although containing the useful component that titanium slag is produced in dedusting ash; but because dedusting ash grade is lower and granularity is very thin; utilize way at present also not well; usual meeting is thrown aside in the refuse tip of industrial park as waste; large-scale titanium slag manufacturing enterprise every year greatly appointment throw aside dedusting ash 5000-6000 ton; not only cause the wasting of resources, but also need to pay first/per ton waste disposal fee of 20-30.
Summary of the invention
The object of the invention is to the useful component made full use of in dedusting ash, provide a kind of novel balling ratio high and the preparation method of the ilmenite concentrate pelletizing that ultimate compression strength is good.
For realizing aforementioned object, the invention provides a kind of preparation method of ilmenite concentrate pelletizing, the method comprises: ilmenite concentrate, liquid adhesive and dedusting ash mixed and carry out pelletizing, and wherein, described dedusting ash is the dedusting ash produced in titanium slag electric furnace in the technique of smelting titanium slag.
Adopt method provided by the invention can utilize fully titanium slag electric furnace dedusting ash, saved resource and produced good economic benefit, the pelletizing manufactured by method of the present invention, balling ratio is high and ultimate compression strength good.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of preparation method of ilmenite concentrate pelletizing, the method comprises: ilmenite concentrate, liquid adhesive and dedusting ash mixed and carry out pelletizing, and wherein, described dedusting ash is the dedusting ash produced in titanium slag electric furnace in the technique of smelting titanium slag.
In the technique of smelting titanium slag, reinforced process is carried out from the charge cavity furnace lid, and bell distance molten bath, bottom has 4-5m high, bell has the petticoat pipe of dust-removal system exhausting.Usually many fine powder materials are had in the raw material of titanium slag electric furnace, time reinforced, fine powder material falls difficult, and in stove, overhead, molten bath is elegant, and the flue gas that fine powder material produces along with reaction in furnace is pumped, entering dust-removal system to be subsequently collected, is exactly the dedusting ash described in the present invention.
The TiO contained in dedusting ash
2, Fe
2o
3, FeO produces the useful component of titanium slag, their content in dedusting ash may reach more than 50 % by weight.In order to make full use of the useful component in dedusting ash, contriver surprisingly finds dedusting ash to be used in the preparation process of ilmenite concentrate pelletizing under study for action, the good result of killing two birds with one stone can be reached, namely, take full advantage of the useful component in dedusting ash, and the ilmenite concentrate pelletizing balling ratio prepared thus is high and ultimate compression strength good.
According to preparation method provided by the invention, the granularity of described dedusting ash can be the regular particle size scope of this area, in order to make that the pelletizing balling ratio of preparation is high and ultimate compression strength good, preferably, the granularity of described dedusting ash is 0.038-0.6mm, and further preferably, granularity is 0.045-0.15mm, more preferably, granularity is 0.063-0.09mm.
According to preparation method provided by the invention, described ilmenite concentrate is the conventional ilmenite concentrate in this area, usually containing TiO
2, FeO, Fe
2o
3, MgO, Al
2o
3, SiO
2with CaO etc.Such as, described ilmenite concentrate can be PTK20 ore deposit: TiO
247.07 % by weight, FeO36.15 % by weight, Fe
2o
35.1 % by weight, MgO4.65 % by weight, Al
2o
31.31 % by weight, SiO
22.78 % by weight, CaO0.95 % by weight and other 1.99 % by weight.The granularity of described ilmenite concentrate can be the regular particle size scope of this area, in order to make that the pelletizing balling ratio of preparation is high and ultimate compression strength good, preferably, the granularity of described ilmenite concentrate is 0.045-0.85mm, and further preferably, granularity is 0.053-0.42mm, more preferably, granularity is 0.074-0.09mm.
According to preparation method provided by the invention, described liquid adhesive can be the liquid adhesive that this area routine uses, in order to make that the pelletizing balling ratio of preparation is high and ultimate compression strength good, preferably, described liquid adhesive contains 23-25 % by weight amylan, 2-3 % by weight Xylo-Mucine and 72-75 % by weight service water.
According to preparation method provided by the invention, selectable a wider range of weight ratio of described ilmenite concentrate, liquid adhesive and dedusting ash, contriver finds the weight proportion by suitably controlling three, high and the ultimate compression strength of the pelletizing balling ratio of preparation can be improved further, preferably, the weight ratio of described ilmenite concentrate, liquid adhesive and dedusting ash is 100:(1.5-3): (1.5-3.5), more preferably 100:(2-2.5): (2-3).
According to preparation method provided by the invention, described mixing the method for carrying out pelletizing can be selected according to the method for this area routine, such as, can be that the mixture forming of ilmenite concentrate, liquid adhesive and dedusting ash mixing gained is dry.Preferred mixing the method for carrying out pelletizing comprise and first add in mixer by ilmenite concentrate and dedusting ash, mix 5-20min under dry powder after, in mixer, add liquid adhesive again to mix, total mixing time 25-50min, the compound of three is added extrusion molding in ball press, then carry out drying, be prepared into target pelletizing.Adopt above-mentioned preferred mixing and carry out pelletizing process and prepare pelletizing, can further improve balling ratio and ultimate compression strength.
Described mixing the condition of carrying out pelletizing can be the pelletizing condition of this area routine, in order to make that the pelletizing balling ratio of preparation is high and ultimate compression strength good, preferably, described condition comprises that shaping linear pressure is 30-70KN, dry temperature is 200-300 DEG C, the dry time is 30-70min, further preferably, described condition comprises that shaping linear pressure is 40-60KN, dry temperature is 230-260 DEG C, the dry time is 40-60min.
The following describe the embodiment of a kind of optimum of the present invention, but the present invention is not limited to this.
Raw material: ilmenite concentrate, granularity is 0.074-0.09mm; Liquid adhesive, containing 23-25 % by weight amylan, 2-3 % by weight Xylo-Mucine and 72-75 % by weight service water; Dedusting ash, granularity is 0.063-0.09mm.Weight proportion is, ilmenite concentrate: liquid adhesive: dedusting ash=100:(2-2.5): (2-3).
First by ilmenite concentrate and dedusting ash according to 100:(2-3) weight ratio add in mixer, after mixing 5-20min under dry powder, again according to ilmenite concentrate: liquid adhesive=100:(2-2.5) weight ratio add liquid adhesive to mixer and mix, total mixing time 25-50min, then the compound of three is added the linear pressure extrusion molding that ball press uses 40-60KN, then dry 40-60min at 230-260 DEG C.Finally obtain ilmenite concentrate pelletizing, balling ratio is 90-95%, and ultimate compression strength is 780-850N.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Below will be described the present invention by embodiment.
In an embodiment, ilmenite concentrate have selected PTK20 ilmenite concentrate from the mine tailing of Xuan Tai factory of Pan Gang group after vanadium titano-magnetite sorts iron ore concentrate, liquid adhesive is from Chengdu metallurgical material company limited TY-1, and dedusting ash is from the dedusting ash produced in Pan Gang group titanium slag electric furnace production technique.
The TYDSH-12A-00 taper triple helical mixer adopting Qidong City sky chemical industry metallurgical equipment company limited to provide carries out compound, the GQJ-850A high-pressure ball press adopting Chengdu metallurgical material company limited to provide carries out extrusion molding, and the DW3-16-20 conveyor dryer adopting Qidong City Haiying Electromechanical Group Co., Ltd to provide carries out drying.
Balling ratio defines: because titanium slag electric furnace not to require the pelletizing of overall shape to feed stock for blast furnace, only need granularity >=1mm to account for more than 90% and just can meet raw material granularity requirement, so balling ratio refers to that the weight of the pelletizing prepared adds that the weight of the particle of granularity >=1mm accounts for the percentage ratio of feed stock for blast furnace gross weight in the present invention.
Embodiment 1
The present embodiment is for illustration of the preparation method of ilmenite concentrate pelletizing provided by the invention.
Raw material: ilmenite concentrate, granularity is 0.074mm; Liquid adhesive, containing 23 % by weight amylans, 2 % by weight Xylo-Mucines and 75 % by weight service waters; Dedusting ash, granularity is 0.063mm.Weight proportion is, ilmenite concentrate: liquid adhesive: dedusting ash=100:2.0:3.0.
First ilmenite concentrate and dedusting ash are added in mixer according to the ratio of 100:3.0, after mixing 5min under dry powder, again according to ilmenite concentrate: the weight ratio of liquid adhesive=100:2.0 adds liquid adhesive to mixer and mixes, total mixing time 30min, then the compound of three being added ball press uses the linear pressure of 60KN according to size 20 × 25 × 18mm extrusion molding, then adds drying machine dry 60min at 230 DEG C.Finally obtain ilmenite concentrate pelletizing, balling ratio is 92.5-93.4%, and ultimate compression strength is 821-832N.
Embodiment 2
The present embodiment is for illustration of the preparation method of ilmenite concentrate pelletizing provided by the invention.
Raw material: ilmenite concentrate, granularity is 0.08mm; Liquid adhesive, containing 24 % by weight amylans, 3 % by weight Xylo-Mucines and 73 % by weight service waters; Dedusting ash, granularity is 0.075mm.Weight proportion is, ilmenite concentrate: liquid adhesive: dedusting ash=100:2.3:2.5.
First ilmenite concentrate and dedusting ash are added in mixer according to the ratio of 100:2.5, after mixing 10min under dry powder, again according to ilmenite concentrate: the weight ratio of liquid adhesive=100:2.3 adds liquid adhesive to mixer and mixes, total mixing time 35min, then the compound of three being added ball press uses the linear pressure of 50KN according to size 20 × 25 × 18mm extrusion molding, then adds drying machine dry 50min at 250 DEG C.Finally obtain ilmenite concentrate pelletizing, balling ratio is 93.2-95.3%, and ultimate compression strength is 830-850N.
Embodiment 3
The present embodiment is for illustration of the preparation method of ilmenite concentrate pelletizing provided by the invention.
Raw material: ilmenite concentrate, granularity is 0.09mm; Liquid adhesive, containing 25 % by weight amylans, 3 % by weight Xylo-Mucines and 72 % by weight service waters; Dedusting ash, granularity is 0.09mm.Weight proportion is, ilmenite concentrate: liquid adhesive: dedusting ash=100:2.5:2.0.
First ilmenite concentrate and dedusting ash are added in mixer according to the ratio of 100:2.0, after mixing 15min under dry powder, again according to ilmenite concentrate: the weight ratio of liquid adhesive=100:2.0 adds liquid adhesive to mixer and mixes, total mixing time 40min, then the compound of three being added ball press uses the linear pressure of 40KN according to size 20 × 25 × 18mm extrusion molding, then adds drying machine dry 40min at 260 DEG C.Finally obtain ilmenite concentrate pelletizing, balling ratio is 92.1-93.1%, and ultimate compression strength is 819-828N.
Embodiment 4
The present embodiment is for illustration of the preparation method of ilmenite concentrate pelletizing provided by the invention.
Raw material: ilmenite concentrate, granularity is 0.4mm; Liquid adhesive, containing 23 % by weight amylans, 2 % by weight Xylo-Mucines and 75 % by weight service waters; Dedusting ash, granularity is 0.15mm.Weight proportion is, ilmenite concentrate: liquid adhesive: dedusting ash=100:1.5:3.5.
First ilmenite concentrate and dedusting ash are added in mixer according to the ratio of 100:3.5, after mixing 5min under dry powder, again according to ilmenite concentrate: the weight ratio of liquid adhesive=100:1.5 adds liquid adhesive to mixer and mixes, total mixing time 30min, then the compound of three being added ball press uses the linear pressure of 50KN according to size 20 × 25 × 18mm extrusion molding, then adds drying machine dry 50min at 250 DEG C.Finally obtain ilmenite concentrate pelletizing, balling ratio is 90.2-92.3%, and ultimate compression strength is 785-801N.
Embodiment 5
The present embodiment is for illustration of the preparation method of ilmenite concentrate pelletizing provided by the invention.
Raw material: ilmenite concentrate, granularity is 0.8mm; Liquid adhesive, containing 25 % by weight amylans, 3 % by weight Xylo-Mucines and 72 % by weight service waters; Dedusting ash, granularity is 0.5mm.Weight proportion is, ilmenite concentrate: liquid adhesive: dedusting ash=100:3.0:1.5.
First ilmenite concentrate and dedusting ash are added in mixer according to the ratio of 100:1.5, after mixing 20min under dry powder, again according to ilmenite concentrate: the weight ratio of liquid adhesive=100:3.0 adds liquid adhesive to mixer and mixes, total mixing time 50min, then the compound of three being added ball press uses the linear pressure of 50KN according to size 20 × 25 × 18mm extrusion molding, then adds drying machine dry 50min at 250 DEG C.Finally obtain ilmenite concentrate pelletizing, balling ratio is 90.1-92.1%, and ultimate compression strength is 781-798N.
Comparative example 1
According to the preparation method of embodiment 2, unlike weight proportion be, ilmenite concentrate: liquid adhesive: dedusting ash=100:1.3:3.7.Finally obtain ilmenite concentrate pelletizing, balling ratio is 82.7-85.6%, and ultimate compression strength is 680-716N.
Comparative example 2
According to the preparation method of embodiment 4, unlike weight proportion be, ilmenite concentrate: liquid adhesive: dedusting ash=100:3.2:1.2.Finally obtain ilmenite concentrate pelletizing, balling ratio is 82.5-84.9%, and ultimate compression strength is 590-610N.
Performance test
The testing method of ultimate compression strength: the WDW-100E pressure testing machine adopting Jinan grand Instrument Ltd. of perseverance think of to provide, is placed on this trier by pelletizing, then increase pressure gradually until pelletizing breaks, pressure is now the ultimate compression strength of this pelletizing.
The testing method of balling ratio: pelletizing weight adds that the weight of the particle of granularity >=1mm accounts for the percentage ratio of gross weight, the powder of wherein≤1mm adopts the screen cloth of 1mm to sieve, and adopts Libra to claim metering
The processing parameter used and pellet characteristics test result are in table 1.
Table 1
As can be seen from embodiment 1-5 and comparative example 1-2 and table 1, adopt method provided by the invention can utilize fully titanium slag electric furnace dedusting ash, the pelletizing manufactured by method of the present invention, balling ratio is high and ultimate compression strength good.By rationally arranging the weight proportion of ilmenite concentrate, liquid adhesive and dedusting ash, the pelletizing that performance is more superior can be obtained.
Claims (7)
1. a preparation method for ilmenite concentrate pelletizing, is characterized in that, the method comprises: ilmenite concentrate, liquid adhesive and dedusting ash mixed and carry out pelletizing, and wherein, described dedusting ash is the dedusting ash produced in titanium slag electric furnace in the technique of smelting titanium slag; The weight ratio of described ilmenite concentrate, liquid adhesive and dedusting ash is 100:(1.5-3): (1.5-3.5);
Described liquid adhesive contains 23-25 % by weight amylan, 2-3 % by weight Xylo-Mucine and 72-75 % by weight service water; Described mixing the method for carrying out pelletizing comprise and first add in mixer by ilmenite concentrate and dedusting ash, mix 5-20min under dry powder after, in mixer, add liquid adhesive again to mix, total mixing time 25-50min, the compound of three is added extrusion molding in ball press, then carries out drying; Described shaping linear pressure is 30-70KN, and the temperature of described drying is 200-300 DEG C, and the time of described drying is 30-70min.
2. method according to claim 1, wherein, the granularity of described dedusting ash is 0.038-0.6mm.
3. method according to claim 2, wherein, the granularity of described dedusting ash is 0.045-0.15mm.
4. method according to claim 1, wherein, the granularity of described ilmenite concentrate is 0.045-0.85mm.
5. method according to claim 4, wherein, the granularity of described ilmenite concentrate is 0.053-0.42mm.
6. according to the method in claim 1-5 described in any one, wherein, the weight ratio of described ilmenite concentrate, liquid adhesive and dedusting ash is 100:(2-2.5): (2-3).
7. method according to claim 1, wherein, described shaping linear pressure is 40-60KN, and the temperature of described drying is 230-260 DEG C, and the time of described drying is 40-60min.
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| CN105271390B (en) * | 2015-11-03 | 2017-05-31 | 攀钢集团攀枝花钢铁研究院有限公司 | Fine fraction synthetic rutile granulates bonding agent and its application method |
| CN105483368A (en) * | 2015-12-09 | 2016-04-13 | 攀枝花钢企米易白马球团有限公司 | Processing method for production raw material of high-titaniferous oxidized pellets |
| CN106222402B (en) * | 2016-09-27 | 2018-05-08 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of production method of ilmenite concentrate pelletizing |
| CN107119198A (en) * | 2017-04-28 | 2017-09-01 | 攀钢集团研究院有限公司 | Titanium slag electric furnace dust-removing powder recoverying and utilizing method |
| CN107287413B (en) * | 2017-07-13 | 2019-03-22 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of prilling process of ilmenite concentrate |
| CN107604158A (en) * | 2017-09-25 | 2018-01-19 | 宝鸡市永盛泰钛业有限公司 | A kind of smelting process of titanium slag |
| CN108570554B (en) * | 2018-06-15 | 2020-03-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Adhesive, preparation method and application thereof |
| CN113308602B (en) * | 2021-05-14 | 2022-07-15 | 宜宾天原海丰和泰有限公司 | Method for utilizing titanium tetrachloride dust collecting slag |
| CN114381597A (en) * | 2021-12-06 | 2022-04-22 | 宜宾天原海丰和泰有限公司 | Method for preparing chlorinated titanium-rich material by taking Panxi titanium concentrate and titanium tetrachloride dust-collecting slag as raw materials |
| CN114380329A (en) * | 2021-12-06 | 2022-04-22 | 宜宾天原海丰和泰有限公司 | Resource utilization method of titanium slag dust |
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| CN101665871A (en) * | 2009-10-14 | 2010-03-10 | 攀钢集团研究院有限公司 | Method for producing titanium carbide slag |
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| JP2000178662A (en) * | 1998-10-05 | 2000-06-27 | Daicel Chem Ind Ltd | Granulating agent for powdery metallic raw material and wet granulating method |
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| CN101665871A (en) * | 2009-10-14 | 2010-03-10 | 攀钢集团研究院有限公司 | Method for producing titanium carbide slag |
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