CN103667684B - Ore powder becomes block method - Google Patents
Ore powder becomes block method Download PDFInfo
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- CN103667684B CN103667684B CN201310719893.0A CN201310719893A CN103667684B CN 103667684 B CN103667684 B CN 103667684B CN 201310719893 A CN201310719893 A CN 201310719893A CN 103667684 B CN103667684 B CN 103667684B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a kind of ore powder and become block method, the method comprises: utilize high-temp liquid melting waste slag to cast to ore powder, to obtain mixture; Mixture is cured; And the mixture of solidification is carried out fragmentation, to obtain ore powder block.Utilize the method effectively can become block to ore powder, method just, fast, low cost.
Description
Technical field
The invention belongs to Ye Kuang field, specifically, the present invention relates to a kind of ore powder and become block method.
Background technology
In the smelt production of ferroalloy ores, the working of a furnace can be subject to the impact of ore grain size.If ore grain size is poor, powder is more, and there will be thorn fire phenomenon frequently under identical smelting condition in smelting furnace, the working of a furnace worsens, and then the difficulty that aggravation ferroalloy ores is smelted.In order to improve the utilization ratio of powder ore, and effectively reduce powder and enter the phenomenon that stove causes the working of a furnace to worsen, shaping method is carried out to ferroalloy ores powder and mainly contains the shaping and coldmoulding two kinds of high temperature sintering.The former is by carrying out high temperature sintering to powder, powder is lumpd shaping, obtains meeting the Ore block smelting granularity requirements; The latter uses cold pressing device to carry out briquetting or ball processed to powder, makes powder shaping, obtains meeting the Ore block smelting granularity requirements.But these two kinds of methods all need to rely on main equipment to produce, and there is the problem that input cost is too high, production technology is complicated, production cost is high.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.For this reason, one object of the present invention is to propose a kind ofly to have ore powder that is easy, quick, low cost and become block method.
According to embodiments of the invention, the present invention proposes a kind of ore powder and become block method, the method comprises: utilize high-temp liquid melting waste slag to cast to ore powder, to obtain mixture; Described mixture is cured; And the mixture of described solidification is carried out fragmentation, to obtain described ore powder block.Adopt embodiment of the present invention ore powder to become block method thus, not only effectively can reduce small grain size powder ore and enter the thorn fire phenomenon frequently that stove causes, powder can also be improved, waste residue smelts the utilization ratio in producing at iron ore.And the ore powder of the above embodiment of the present invention becomes block method to implement easier, quick, safety, without the need to relying on main equipment to produce, significantly reduces input cost.
In some embodiments of the invention, described ore powder and high-temp liquid melting waste slag are that 2:8 casts according to mass ratio.Effectively can prepare the ore powder block that hardness is moderate thus.
In some embodiments of the invention, the basicity value of described high-temp liquid melting waste slag is not higher than 1.4.The potential of hydrogen of liquid ore smelting waste residue can be controlled thus further, avoid weathering.
In some embodiments of the invention, the median size of described ore powder is 3 ~ 8 millimeters.
In some embodiments of the invention, the water content of described ore powder is lower than 7 % by weight.The too high risk producing blast of moisture can be reduced thus further, improve production safety coefficient.
In some embodiments of the invention, the median size of ore powder block is 5 to 15 centimetres.The efficiency of ore powder can be improved thus further.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the schema that ore powder according to an embodiment of the invention becomes block method.
Embodiment
Be described below in detail embodiments of the invention, the embodiment wherein described is exemplary, is intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
Existing method many employings high temperature sintering method of forming or coldmoulding method ore powder being become to block.Because these two kinds of methods all need to rely on main equipment to produce, there is the problem that input cost is too high, production technology is complicated, production cost is high.Therefore the present invention proposes a kind of ore powder and become block method, the method is reliably easy, and energy consumption is low.
Describe in detail below with reference to Fig. 1 and become block method according to ore powder of the invention process.
In some embodiments of the invention, ore powder becomes block method to comprise:
S100: casting
First, high-temp liquid melting waste slag is utilized to cast to ore powder, to obtain mixture.According to a particular embodiment of the invention; high-temp liquid melting waste slag is the waste residue produced in ore smelting process; due to through pyrotic smelting; exist with high-temp liquid form when first getting rid of; carry out in process after generally being placed cooling curing; process this part waste residue and usually can consume energy consumption greatly, to the idle land used that then can take larger area.The ore powder mentioned in the above embodiment of the present invention is the powder that the granularity of ore remnants before smelting is less, and the amount of ore powder is comparatively large, smelts if directly enter stove, can the working of a furnace be seriously caused to worsen, thorn fire is frequent, strengthens and smelts difficulty, if do not smelt it, will waste a large amount of ore.The present inventor finds, utilize high-temp liquid melting waste slag can carry out shaping agglomeration process to ore powder, can block be become to combine with ore powder the recycling of waste residue thus, solve two hang-ups that Solid state fermentation energy consumption is high, difficulty smelted by ore powder simultaneously.
According to a particular embodiment of the invention, above-mentioned can be used for that ore powder is cast high-temp liquid melting waste slag and be not particularly limited, such as, the basicity of high-temp liquid melting waste slag should not higher than 1.4.What usual smelting high carbon ferromanganese obtained is generally basic slag, and smelting manganese silicon alloy obtains is generally acid slag.Contriver finds, when the basicity of alkaline scrap material is greater than 1.4 easy weathering, so basicity control will be carried out to the slag liquid being used for building, make it not higher than 1.4, can avoid the easy weathering of ore powder block utilizing it to prepare thus, the shelf-time is too short.
According to a particular embodiment of the invention, the ore powder that the ore powder being suitable for the embodiment of the present invention becomes block method to carry out into block process is not particularly limited, can be such as median size the be ore powder of 3 ~ 8 millimeters.The use range that ore powder becomes block method can be improved further thus, and block effect can be improved into further.According to a particular embodiment of the invention, the water content of ore powder is also not particularly limited, such as can lower than 7 % by weight.To blast when high-temp liquid melting waste slag can be avoided thus to mix with it phenomenon.If therefore the water content of ore powder is too high need carry out drying treatment to it in advance, the water content of strict control ore powder lower than 7 % by weight, and then improves the safety coefficient of casting process.
According to a particular embodiment of the invention; the proportioning utilizing high-temp liquid melting waste slag to cast to ore powder is also not particularly limited; contriver finds; plasticity due to high-temp liquid melting waste slag is not fine; therefore; comparatively large by wherein participating in the shaping difficulty of ore powder, the hardness that usually there will be the block obtained is inadequate, fragile phenomenon.Invention of the present invention, by test of many times, finds by according to ore powder and high-temp liquid melting waste slag mass ratio being that 2:8 carries out being cast into block effect best.If ore powder too high levels, then the two not easily forms lumphy structure after follow-up solidification, causes the Ore block intensity of casting forming poor, is not easy to smelt production requirement, and ore powder easily departs from from Ore block when the later stage is broken, therefore become block failure; If ore powder content is too low, then cause ore powder material content in the Ore block obtained too low, reduce ore powder efficiency, indirectly increase smelting energy consumption, affect economic and technical norms, add production cost.
According to a particular embodiment of the invention, the method of above-mentioned casting can be fallen in cover half by high-temp liquid melting waste slag, while toppling over, by ore powder together dispenser in cover half, the mixture homogeneity of the two can be improved thus further, and then improve into block effect.According to a particular embodiment of the invention, the cover half for mixing can be melt pit.Without the need to main equipment, and treatment capacity is more flexible.
S200: solidification
According to a particular embodiment of the invention, further mixture obtained above is cured.According to a particular embodiment of the invention, the concrete grammar of solidification can be placed by said mixture, makes it cool rear spontaneous curing and becomes block.Thus by adopting nature placement curing molding higher temperatures sinter molding or coldmoulding to significantly reduce energy consumption.And the method is without the need to main equipment, therefore the ore powder of the above embodiment of the present invention becomes block method convenient simple, cost-saving.
S300: broken
According to a particular embodiment of the invention, finally the mixture obtained after above-mentioned solidification is carried out fragmentation, to obtain ore powder block.According to a particular embodiment of the invention, the granularity of the ore powder block that fragmentation obtains also is not particularly limited, and such as median size can be 5 to 15 centimetres, can meet smelting requirements thus.The ore powder block of above-mentioned granularity is carried out smelt the generation effectively can avoiding stinging fiery phenomenon.
Become block method can significantly improve ore powder, the utilization ratio of waste residue in ore smelting is produced according to the ore powder of the embodiment of the present invention, the method treating processes is easy, quick, can produce without the need to relying on main equipment, and production technology is simple, production process risk is low, the shaping or cold compression molding method of more existing high temperature sintering significantly reduces cost and energy consumption.
Below with reference to specific embodiment, present invention is described, it should be noted that, these embodiments are only descriptive, and do not limit the present invention in any way.
Embodiment 1
Ore powder: ore powder composition is in table 1.
High-temp liquid melting waste slag: basicity is less than 1.4.
Table 1
| Mn | Fe | P | SiO 2 | CaO | MgO | Al 2O 3 |
| 25.56% | 7.60% | 0.120% | 16.28% | 0.30% | 1.51% | 1.00% |
Method:
The ore powder of 200kg and the high-temp liquid melting waste slag of 800kg are poured in cover half simultaneously; Take out after slag coagulation forming at night, the ore powder block that median size is 5 to 15 centimetres is broken into it.
Sample through chemical examination, the composition of ore powder block is in table 2.Allocate in stove as required and use.
Table 2
| Mn | Fe | P | SiO 2 | CaO | MgO | Al 2O 3 |
| 13.00% | 1.00% | 0.070% | 30.00% | 35.00% | 4.00% | 5.00% |
Result:
By smelting ore powder block obtained above, do not sting fire phenomenon frequently.
Comparative example 1
Ore powder: with embodiment 1.
High-temp liquid melting waste slag: basicity is less than 1.4.
Method:
The ore powder of 100kg and the high-temp liquid melting waste slag of 800kg are poured in cover half simultaneously; Take out after slag coagulation forming at night, the ore powder block that median size is 5 to 15 centimetres is broken into it.
Sample through chemical examination, the composition of ore powder block is in table 3.Allocate in stove as required and use.
Table 3
| Mn | Fe | P | SiO 2 | CaO | MgO | Al 2O 3 |
| 11.80% | 0.85% | 0.065% | 31.50% | 37.00% | 4.70% | 5.50% |
Result:
In the ore powder block obtained as shown in Table 3, effective metal component content is lower.It is smelted, significantly reduces productive rate, increase energy consumption.
Comparative example 2
Ore powder: with embodiment 1.
High-temp liquid melting waste slag: basicity is less than 1.4.
Method:
The ore powder of 300kg and the high-temp liquid melting waste slag of 800kg are poured in cover half simultaneously; Take out after slag coagulation forming at night, the ore powder block that median size is 5 to 15 centimetres is broken into it.
Result:
Solidification aftershaping effect is bad, and ore powder easily spins off from block.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.
Claims (4)
1. ore powder becomes a block method, it is characterized in that, comprising:
High-temp liquid melting waste slag is utilized to cast to ore powder, to obtain mixture;
Described mixture is cured; And
The mixture of described solidification is carried out fragmentation, to obtain described ore powder block,
Described ore powder and high-temp liquid melting waste slag are that 2:8 casts according to mass ratio,
The basicity of described high-temp liquid melting waste slag is not higher than 1.4.
2. ore powder becomes block method according to claim 1, it is characterized in that, the median size of described ore powder is 3 ~ 8 millimeters.
3. ore powder becomes block method according to claim 1, it is characterized in that, the water content of described ore powder is lower than 7 % by weight.
4. ore powder becomes block method according to claim 1, it is characterized in that, the median size of ore powder block is 5 to 15 centimetres.
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| CN103667684B true CN103667684B (en) | 2016-04-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559953A (en) * | 2009-03-30 | 2009-10-21 | 刘日宏 | Method for using high-temperature liquid silicon manganese alloy slag as raw material to produce cast stone |
| CN101560053A (en) * | 2009-05-25 | 2009-10-21 | 刘日宏 | Production method of mineral wool with high-temperature liquid ferroalloy waste as raw materials |
| CN101831539A (en) * | 2010-05-20 | 2010-09-15 | 牛庆君 | Method for producing artificial rich iron ore from copper smelting waste slag by using new sintering technology |
| CN101831555A (en) * | 2010-05-20 | 2010-09-15 | 牛庆君 | Method for producing artificial rich iron ore from nickel smelting waste slag by utilizing new sintering process |
| CN101831549A (en) * | 2010-05-20 | 2010-09-15 | 牛庆君 | Method for producing artificial rich iron ore from nickel, copper and cobalt smelting waste slag by utilizing new sintering process |
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- 2013-12-24 CN CN201310719893.0A patent/CN103667684B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559953A (en) * | 2009-03-30 | 2009-10-21 | 刘日宏 | Method for using high-temperature liquid silicon manganese alloy slag as raw material to produce cast stone |
| CN101560053A (en) * | 2009-05-25 | 2009-10-21 | 刘日宏 | Production method of mineral wool with high-temperature liquid ferroalloy waste as raw materials |
| CN101831539A (en) * | 2010-05-20 | 2010-09-15 | 牛庆君 | Method for producing artificial rich iron ore from copper smelting waste slag by using new sintering technology |
| CN101831555A (en) * | 2010-05-20 | 2010-09-15 | 牛庆君 | Method for producing artificial rich iron ore from nickel smelting waste slag by utilizing new sintering process |
| CN101831549A (en) * | 2010-05-20 | 2010-09-15 | 牛庆君 | Method for producing artificial rich iron ore from nickel, copper and cobalt smelting waste slag by utilizing new sintering process |
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