CN103898319A - Method for preparing titanium concentrate pellet - Google Patents
Method for preparing titanium concentrate pellet Download PDFInfo
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- CN103898319A CN103898319A CN201210590757.1A CN201210590757A CN103898319A CN 103898319 A CN103898319 A CN 103898319A CN 201210590757 A CN201210590757 A CN 201210590757A CN 103898319 A CN103898319 A CN 103898319A
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- ilmenite concentrate
- dedusting ash
- liquid adhesive
- weight
- pelletizing
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Abstract
The invention provides a method for preparing titanium concentrate pellets. The method comprises the following steps: mixing titanium concentrate, a liquid adhesive and collected dust, and pelleting, wherein the collected dust is generated from an electric titanium slag furnace in a titanium slag smelting process. By adopting the method, the collected dust of the electric titanium slag furnace can be sufficiently utilized, the resource is saved, and good economic benefits are achieved. The pellet manufactured by using the method is high in pellet rate and good in pressure resistance.
Description
Technical field
The present invention relates to a kind of method of pelletizing, be specifically related to the method for titanium slag electric furnace dedusting ash for ilmenite concentrate manufacture pelletizing.
Background technology
Produce at present in the technique of titanium slag, conventionally adopt large-scale titanium slag electric furnace to smelt, in titanium slag electric furnace, can produce a large amount of dedusting ash, particularly enter in the situation that contains fine powder material in the raw material of stove, a large amount of fine powder materials can enter dust-removal system with furnace gas, and the amount of the dedusting ash of generation is larger.Although contain the useful component that titanium slag is produced in dedusting ash; but because dedusting ash grade is lower and granularity is very thin; the at present not good way of utilizing also; conventionally can throw aside in the refuse tip of industrial park as waste; dedusting ash 5000-6000 ton is thrown aside in the annual large appointment of large-scale titanium slag manufacturing enterprise; not only cause the wasting of resources, but also need to pay 20-30 unit/waste disposal fee per ton.
Summary of the invention
The object of the invention is to make full use of the useful component in dedusting ash, the preparation method of the high and ilmenite concentrate pelletizing that ultimate compression strength is good of a kind of novel balling ratio is provided.
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 carries out pelletizing, wherein, the dedusting ash producing in titanium slag electric furnace in the technique that described dedusting ash is smelting titanium slag.
Adopt method provided by the invention to utilize fully titanium slag electric furnace dedusting ash, saved resource and produced good economic benefit, the pelletizing of being 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 the embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
The preparation method who the invention provides a kind of ilmenite concentrate pelletizing, the method comprises: ilmenite concentrate, liquid adhesive and dedusting ash mixed and carries out pelletizing, wherein, the dedusting ash producing in titanium slag electric furnace in the technique that described dedusting ash is smelting titanium slag.
In the technique of smelting titanium slag, reinforced process is that the charge cavity from furnace lid carries out, and bell has 4-5m high apart from molten bath, bottom, has the petticoat pipe of dust-removal system exhausting on bell.In the raw material of titanium slag electric furnace, conventionally there are many fine powder materials, fine powder material whereabouts difficulty when reinforced, in stove, overhead, molten bath is elegant, and fine powder material is along with the flue gas that reaction in furnace produces is pumped, entering subsequently dust-removal system and be collected, is exactly the dedusting ash described in the present invention.
The TiO containing in dedusting ash
2, Fe
2o
3, FeO produces the useful component of titanium slag, more than their content in dedusting ash may reach 50 % by weight.In order to make full use of the useful component in dedusting ash, contriver surprisingly finds under study for action by dedusting ash the preparation process for ilmenite concentrate pelletizing, can reach the good result of killing two birds with one stone,, take full advantage of the useful component in dedusting ash, and the ilmenite concentrate pelletizing balling ratio of preparing is thus 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 the pelletizing balling ratio of preparation high and ultimate compression strength good, preferably, the granularity of described dedusting ash is 0.038-0.6mm, further preferred, and 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, conventionally contains TiO
2, FeO, Fe
2o
3, MgO, Al
2o
3, SiO
2with CaO etc.For example, 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 the pelletizing balling ratio of preparation high and ultimate compression strength good, preferably, the granularity of described ilmenite concentrate is 0.045-0.85mm, further preferred, and 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 conventional liquid adhesive using in this area, in order to make the pelletizing balling ratio of preparation 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, can further improve the high and ultimate compression strength of the pelletizing balling ratio of preparation, 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, for example, can be ilmenite concentrate, liquid adhesive and dedusting ash are mixed to the mixture forming of gained dry.The method of preferably mixing and carry out pelletizing comprises first ilmenite concentrate and dedusting ash is added in mixer, under dry powder, mix after 5-20min, in mixer, add liquid adhesive to mix again, total mixing time 25-50min, three's compound is added to extrusion molding in ball press, then be dried, be prepared into target pelletizing.Adopt above-mentioned preferred mixing and carry out pelletizing method 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 the pelletizing balling ratio of preparation high and ultimate compression strength good, preferably, described condition comprises that the linear pressure of moulding is that 30-70KN, dry temperature are that 200-300 ℃, dry time are 30-70min, further preferably, described condition comprises that the linear pressure of moulding is that 40-60KN, dry temperature are that 230-260 ℃, dry time are 40-60min.
Below described 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, contains 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, under dry powder, mix after 5-20min, again according to ilmenite concentrate: weight ratio liquid adhesive=100:(2-2.5) adds liquid adhesive to mix to mixer, total mixing time 25-50min, then three's compound is added ball press to use the linear pressure extrusion molding of 40-60KN, then at 230-260 ℃, be dried 40-60min.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 characterictic described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode.
In addition, also can carry out arbitrary combination between various 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 describe the present invention by embodiment.
In an embodiment, ilmenite concentrate has been selected PTK20 ilmenite concentrate from Xuan Tai factory of Pan Gang group in the mine tailing after vanadium titano-magnetite sorts iron ore concentrate, liquid adhesive is from the TY-1 of Chengdu metallurgical material company limited, and dedusting ash is from the dedusting ash producing in Pan Gang group titanium slag electric furnace production technique.
The TYDSH-12A-00 taper triple helical mixer that adopts Qidong City sky chemical industry metallurgical equipment company limited to provide carries out compound, the GQJ-850A high-pressure ball press that adopts Chengdu metallurgical material company limited to provide carries out extrusion molding, and the DW3-16-20 conveyor dryer that adopts Qidong City Haiying Electromechanical Group Co.,Ltd to provide is dried.
Balling ratio definition: because titanium slag electric furnace not requires the pelletizing of completeness 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 preparing 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 illustrating the preparation method of ilmenite concentrate pelletizing provided by the invention.
Raw material: ilmenite concentrate, granularity is 0.074mm; Liquid adhesive, contains 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, under dry powder, mix after 5min, again according to ilmenite concentrate: the weight ratio of liquid adhesive=100:2.0 adds liquid adhesive to mix to mixer, total mixing time 30min, then three's compound is added ball press to use the linear pressure of 60KN according to size 20 × 25 × 18mm extrusion molding, then add drying machine dry 60min at 230 ℃.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 illustrating the preparation method of ilmenite concentrate pelletizing provided by the invention.
Raw material: ilmenite concentrate, granularity is 0.08mm; Liquid adhesive, contains 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, under dry powder, mix after 10min, again according to ilmenite concentrate: the weight ratio of liquid adhesive=100:2.3 adds liquid adhesive to mix to mixer, total mixing time 35min, then three's compound is added ball press to use the linear pressure of 50KN according to size 20 × 25 × 18mm extrusion molding, then add drying machine dry 50min at 250 ℃.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 illustrating the preparation method of ilmenite concentrate pelletizing provided by the invention.
Raw material: ilmenite concentrate, granularity is 0.09mm; Liquid adhesive, contains 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, under dry powder, mix after 15min, again according to ilmenite concentrate: the weight ratio of liquid adhesive=100:2.0 adds liquid adhesive to mix to mixer, total mixing time 40min, then three's compound is added ball press to use the linear pressure of 40KN according to size 20 × 25 × 18mm extrusion molding, then add drying machine dry 40min at 260 ℃.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 illustrating the preparation method of ilmenite concentrate pelletizing provided by the invention.
Raw material: ilmenite concentrate, granularity is 0.4mm; Liquid adhesive, contains 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, under dry powder, mix after 5min, again according to ilmenite concentrate: the weight ratio of liquid adhesive=100:1.5 adds liquid adhesive to mix to mixer, total mixing time 30min, then three's compound is added ball press to use the linear pressure of 50KN according to size 20 × 25 × 18mm extrusion molding, then add drying machine dry 50min at 250 ℃.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 illustrating the preparation method of ilmenite concentrate pelletizing provided by the invention.
Raw material: ilmenite concentrate, granularity is 0.8mm; Liquid adhesive, contains 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, under dry powder, mix after 20min, again according to ilmenite concentrate: the weight ratio of liquid adhesive=100:3.0 adds liquid adhesive to mix to mixer, total mixing time 50min, then three's compound is added ball press to use the linear pressure of 50KN according to size 20 × 25 × 18mm extrusion molding, then add drying machine dry 50min at 250 ℃.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, different is that weight proportion is, 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, different is that weight proportion is, 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 that adopts Jinan grand Instrument Ltd. of permanent think of to provide, pelletizing is placed on this trier, then increase pressure gradually until pelletizing breaks, the ultimate compression strength that pressure is now 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 using and pelletizing the performance test results are in table 1.
Table 1
Can be found out by embodiment 1-5 and comparative example 1-2 and table 1, adopt method provided by the invention to utilize fully titanium slag electric furnace dedusting ash, the pelletizing of being manufactured by method of the present invention, balling ratio is high and ultimate compression strength good.By the weight proportion of ilmenite concentrate, liquid adhesive and dedusting ash is rationally set, can obtain the pelletizing that performance is more superior.
Claims (9)
1. a preparation method for ilmenite concentrate pelletizing, is characterized in that, the method comprises: ilmenite concentrate, liquid adhesive and dedusting ash are mixed and carry out pelletizing, wherein, the dedusting ash producing in titanium slag electric furnace in the technique that described dedusting ash is smelting titanium slag.
2. method according to claim 1, wherein, the granularity of described dedusting ash is 0.038-0.6mm, preferred size is 0.045-0.15mm.
3. method according to claim 1, wherein, the granularity of described ilmenite concentrate is 0.045-0.85mm, preferred size is 0.053-0.42mm.
4. method according to claim 1, wherein, described liquid adhesive contains 23-25 % by weight amylan, 2-3 % by weight Xylo-Mucine and 72-75 % by weight service water.
5. according to the method described in any one in claim 1-4, wherein, the weight ratio of described ilmenite concentrate, liquid adhesive and dedusting ash is 100:(1.5-3): (1.5-3.5).
6. according to the method described in any one in claim 1-4, 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 mixing the method for carrying out pelletizing comprise first ilmenite concentrate and dedusting ash are added in mixer, under dry powder, mix after 5-20min, in mixer, add liquid adhesive to mix again, total mixing time 25-50min, adds extrusion molding in ball press by three's compound, is then dried.
8. method according to claim 7, wherein, the linear pressure of described moulding is 30-70KN, and described dry temperature is 200-300 ℃, and the described dry time is 30-70min.
9. method according to claim 7, wherein, the linear pressure of described moulding is 40-60KN, and described dry temperature is 230-260 ℃, and the described dry time is 40-60min.
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| CN105271390A (en) * | 2015-11-03 | 2016-01-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Fine-fraction artificial rutile granulation binding agent and use method thereof |
| 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 |
| CN106222402A (en) * | 2016-09-27 | 2016-12-14 | 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 |
| CN107287413A (en) * | 2017-07-13 | 2017-10-24 | 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 |
| CN108570554A (en) * | 2018-06-15 | 2018-09-25 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of novel binders and its preparation method and application |
| CN113308602A (en) * | 2021-05-14 | 2021-08-27 | 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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| CN105271390A (en) * | 2015-11-03 | 2016-01-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Fine-fraction artificial rutile granulation binding agent and use method thereof |
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| 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 |
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| 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 |
| CN108570554A (en) * | 2018-06-15 | 2018-09-25 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of novel binders and its preparation method and application |
| 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 |
| CN113308602A (en) * | 2021-05-14 | 2021-08-27 | 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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