CN105112662A - Method for preparing high-silicon silicon-manganese alloy - Google Patents
Method for preparing high-silicon silicon-manganese alloy Download PDFInfo
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- CN105112662A CN105112662A CN201510484193.7A CN201510484193A CN105112662A CN 105112662 A CN105112662 A CN 105112662A CN 201510484193 A CN201510484193 A CN 201510484193A CN 105112662 A CN105112662 A CN 105112662A
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Abstract
The invention discloses a method for preparing a high-silicon silicon-manganese alloy. According to the embodiment of the invention, a manganese-containing raw material is subjected to primary smelting to obtain a liquid-state non-standard manganese-silicon alloy; a silicon-containing raw material is subjected to secondary smelting to obtain a liquid-state silicon mixture, wherein in the secondary smelting, graphite carbon rods are used for fluxing; and the liquid-state non-standard manganese-silicon alloy and the liquid-state silicon mixture are subjected to alloying treatment to obtain the high-silicon silicon-manganese alloy. By using the method disclosed by the invention for producing the high-silicon silicon-manganese alloy, the coke consumption is low, the electricity consumption is low, the cost is remarkably reduced, and the obtained high-silicon silicon-manganese alloy is high in grade and product competitiveness; and moreover, by using the graphite carbon rods for fluxing during a smelting process, the smelting time is remarkably reduced, and the production energy consumption is further reduced.
Description
Technical field
The present invention relates to Metal smelting field, particularly, relate to the method preparing silicon-manganese alloy.
Background technology
At present, ferroalloy productor affects by steel industry and National Macroscopic economic condition, and the enterprise of more than 90% is in great loss state, with this, improves productivity effect, and reducing production cost is the vital task that steel industry needs to solve.In prior art, high silicon silicomanganese is produced, and the requirement that there is raw material is high, production energy consumption large, the problems such as production cost is high, operation is more difficult, production difficulty is larger.
Therefore, the method preparing silicon-manganese alloy haves much room for improvement.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.For this reason, one object of the present invention is to propose that a kind of energy consumption is little, cost is low, and the simple to operate method preparing silicon-manganese alloy.
According to an aspect of the present invention, the invention provides a kind of method preparing silicon-manganese alloy.According to embodiments of the invention, the first smelting will be carried out containing manganese raw material, to obtain liquid manganese mixture; Silicon-containing material is carried out the second smelting, to obtain liquid-state silicon mixture, wherein, in described second smelting, utilizes graphite carbon rod to flux; And described liquid manganese mixture and described liquid-state silicon mixture are carried out re melting process, to obtain described silicon-manganese alloy.
According to the method for the embodiment of the present invention, the present invention adopts hot-metal process to carry out the smelting of high silicon silicomanganese, solves the One-step production height silicon silicomanganese working of a furnace in prior art and is difficult to control, the problem that burnt consumption is high, power consumption is high, percentage of product is low.Utilize method of the present invention to produce silicon-manganese alloy, burnt consumption is low, power consumption is low, cost is significantly lower reduces and the silicon-manganese alloy percentage of product obtained is high, product competitiveness is strong.Further, in smelting process, utilize graphite carbon rod to flux, tap to tap time significantly shortens, and production energy consumption declines further.
In addition, the method preparing silicon-manganese alloy according to the above embodiment of the present invention, can also have following additional technical characteristic:
According to embodiments of the invention, silicon-containing material and silicomanganese Water Quenching Slag are carried out the second smelting.
According to embodiments of the invention, the add-on of described insulating covering agent is the described 2-10% containing manganese raw material and described silicon-containing material total mass, preferably, is 5%.
According to embodiments of the invention, described liquid manganese mixture is the non-standard manganese-silicon of Mn70Si11 type.
According to embodiments of the invention, described silicon-manganese alloy is the silicon-manganese alloy of the high trade mark FeMn64Si27 or FeMn67Si23.
According to embodiments of the invention, described silicon-containing material is broken ferrosilicon or cutting metal silicon.
According to embodiments of the invention, described silicon-containing material is 75 ferrosilicon or degradation product Pure Silicon Metal.
According to embodiments of the invention, the temperature of described re melting process is for being not less than 1600 degrees Celsius.
According to embodiments of the invention, utilize mineral hot furnace to carry out described first and smelt.
According to embodiments of the invention, utilize main frequency furnace or refining furnace to carry out described second and smelt.
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 shows the schematic flow sheet preparing silicon-manganese alloy according to an embodiment of the invention;
Fig. 2 shows the schematic diagram of the manganese element rate of recovery according to an embodiment of the invention;
Fig. 3 shows the schematic diagram of the element silicon rate of recovery according to an embodiment of the invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, term " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", the orientation of the instruction such as " end " or position relationship be based on orientation shown in the drawings or position relationship, be only the present invention for convenience of description instead of require that the present invention with specific azimuth configuration and operation, therefore must can not be interpreted as limitation of the present invention.
It should be noted that, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.Further, in describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
According to an aspect of the present invention, the invention provides a kind of method preparing silicon-manganese alloy.With reference to figure 1, according to embodiments of the invention, explain the method, the method comprises:
S100 first smelts
According to embodiments of the invention, the first smelting will be carried out containing manganese raw material, obtain liquid manganese mixture.Thus, what utilize low cost carries out the first smelting containing manganese raw material, obtains the liquid manganese mixture for re melting process.
According to a particular embodiment of the invention, described is the non-standard manganese-silicon of Mn70Si11 type containing manganese raw material.Thus, utilize the non-standard manganese-silicon of Mn70Si11 type of low cost can smelt the silicon-manganese alloy of high cost, and smelting process is easy to control, product percentage of product is high.
According to some embodiments of the present invention, utilize mineral hot furnace to carry out described first and smelt.Thus, the efficiency of smelting is high, energy consumption is low.
S200 second smelts
According to embodiments of the invention, silicon-containing material is carried out the second smelting, obtain liquid-state silicon mixture, wherein, in the second smelting, utilize graphite carbon rod to flux.Thus, what utilize common in industrial production, low cost carries out the first smelting containing manganese raw material, obtains the liquid-state silicon mixture for re melting process.Further, in the molten bath smelted, add graphite carbon rod as thermal source, smelting temperature significantly improves, and tap to tap time shortened to 20 minutes by original 30 minutes, meanwhile, smelts energy consumption and significantly declines.
According to a particular embodiment of the invention, silicon-containing material and silicomanganese Water Quenching Slag are carried out the second smelting, wherein, smelt to molten state at silicon-containing material, then add silicomanganese Water Quenching Slag, proceed the second smelting.Thus, silicomanganese Water Quenching Slag not only can avoid the silicon-manganese alloy of production gold upper strata oxidized, and the composition of silicomanganese Water Quenching Slag and the later silicon-manganese alloy slag composition of alloying comparatively close, prevent from alloy, introduce other impurity, in addition, silicomanganese Water Quenching Slag is industrial waste, and basic cost free reduce further the production cost of silicon-manganese alloy.According to embodiments of the invention, the add-on of silicomanganese Water Quenching Slag is not particularly limited, as long as can effectively shorten the heat.According to preferred embodiments more of the present invention, the add-on of silicomanganese Water Quenching Slag is the 2-10% containing manganese raw material and silicon-containing material total mass.Thus, add insulating covering agent in this ratio, namely ensure that the alloy generated is not oxidized, avoid again the excessive impurity that to cause in alloy of insulating covering agent too much, affect the product rate of alloy.According to preferred embodiment of the present invention, the add-on of silicomanganese Water Quenching Slag is containing manganese raw material and silicon-containing material total mass 5%.Thus, add insulating covering agent in this ratio, the lucky complete reaction of alloy of insulating covering agent and generation, namely ensure that the alloy generated is not oxidized, avoid again the excessive impurity that to cause in alloy of insulating covering agent too much, the product rate of producing the alloy obtained is better.According to some embodiments of the present invention, silicon-containing material is broken ferrosilicon or cutting metal silicon.Thus, with the waste in industrial production for raw material, production cost is low.
According to some embodiments of the present invention, silicon-containing material is 75 ferrosilicon or degradation product Pure Silicon Metal.Thus, 75 ferrosilicon are the ferrosilicon of silicon content 75%, its major ingredient is element needed for alloy of the present invention, avoid in silicon-manganese alloy, introduce other impurity, and the silicon content of product Pure Silicon Metal of demoting is about 99%, silicon purity is high, and impurity is few, also avoids in silicon-manganese alloy, introduce other impurity.
According to some embodiments of the present invention, utilize main frequency furnace or refining furnace to carry out described second and smelt.Thus, metallurgical effect is high, effective, and energy consumption is low.
S300 re melting process
According to embodiments of the invention, liquid manganese mixture and liquid-state silicon mixture are carried out re melting process, obtain silicon-manganese alloy.Thus, by the liquid manganese mixture of low cost and liquid-state silicon mixture, by re melting process, obtain the silicon-manganese alloy that economic worth is high, solve the One-step production height silicon silicomanganese working of a furnace in prior art to be difficult to control, the problem that burnt consumption is high, power consumption is high, percentage of product is low.
According to embodiments of the invention, described silicon-manganese alloy is the silicon-manganese alloy of the high trade mark FeMn64Si27 and FeMn67Si23.Thus, the alloy silicon content utilizing invention of the present invention to obtain significantly improves, and obtains the silicon-manganese alloy of silicone content and high FeMn64Si27 and FeMn67Si23 of economic worth
According to some embodiments of the present invention, the temperature of described re melting process is for being not less than 1600 degrees Celsius.Thus, remelting is effective, and the product percentage of product obtained is high.
According to the method for the embodiment of the present invention, the present invention adopts hot-metal process to carry out the smelting of high silicon silicomanganese, obtain the silicon-manganese alloy of high percentage of product, solve the One-step production height silicon silicomanganese working of a furnace in prior art and be difficult to control, the problem that burnt consumption is high, power consumption is high, percentage of product is low.Method of the present invention is utilized to produce silicon-manganese alloy, burnt consumption is low, power consumption is low, cost reduces significantly down, the comprehensive energy consumption of product can reduce 5-10%, and, by control silicon-containing material and the kind and the ratio that contain manganese raw material, the constituent content of the silicon-manganese alloy prepared, the trade mark of silicon-manganese alloy and quality are easy to control, and in alloy, foreign matter content is low, silicon-manganese alloy percentage of product is high, and product competitiveness is strong.Further, in smelting process, utilize graphite carbon rod to flux as thermal source, smelting temperature significantly improves, and according to embodiments of the invention, tap to tap time can shorten to 20 minutes by original 30 minutes, meanwhile, smelts energy consumption and significantly declines.
Below with reference to specific embodiment, the present invention will be described, it should be noted that, these embodiments are only illustrative, and can not be interpreted as limitation of the present invention.
Embodiment 1
The present embodiment, under each material composition, weight, substantially identical condition, compares and to add graphite carbon rod in the middle of intermediate frequency furnace and flux and do not add graphite carbon rod and flux on the impact of smelting.
1, experimental technique
In the present embodiment, with add that graphite carbon rod fluxes in the middle of intermediate frequency furnace for experimental group, with do not add in the middle of intermediate frequency furnace that graphite carbon rod fluxes for control group, concrete preparation method is as follows:
(1) utilize mineral hot furnace to smelt silicomanganese (manganese 66.38%, silicon 16.41) 40Kg, obtain liquid silicon manganese alloy;
(2) intermediate frequency furnace is utilized to smelt ferrosilicon (manganese 0.4%, silicon 70%) 13Kg, when rubescent, add silicomanganese Water Quenching Slag 5Kg smelt, obtain liquid-state silicon iron alloy, wherein, add graphite carbon rod in the middle of the intermediate frequency furnace of experimental group to flux, and do not add graphite carbon rod in the middle of the intermediate frequency furnace of control group and flux;
(3) liquid silicon manganese alloy is joined in intermediate frequency furnace, mix with liquid-state silicon iron alloy, carry out remelting at 1650 degrees Celsius, obtain silicon-manganese alloy.
2, experimental result
According to the method described above, experimental group repeats to have smelted 5 stoves, the rate of recovery that control group repeats to have smelted each element in 4 stoves, the metal ingredient of each stove and alloy refers to table 1, Fig. 2 and 3, in experimental group, manganese element remelting average recovery rate is 97.7%, element silicon remelting average recovery rate is 83.8%, and the comprehensive average recovery rate of alloy is 92%; In control group, the manganese element remelting rate of recovery is 98%, and the element silicon remelting rate of recovery is 90%, and alloy comprehensive recovery is 92%.Wherein, it should be noted that, there is the phenomenon of the manganese element rate of recovery more than 100% in experimental group-2 and experimental group-3, is because the molten metal wall built-up of a upper stove is serious, enters the alloy of next stove, the increase of manganese element content is caused.In addition, the calculating of each element and alloy recovery utilizes the aggregation of data of black furnace remelting and hot stove remelting to calculate.
As shown in Figures 2 and 3, the manganese element of experimental group and control group and the average recovery rate of element silicon, and the comprehensive average recovery rate of alloy is all close, shows adding on the preparation of silicon-manganese alloy without impact of graphite carbon rod, but significantly can reduce the tap to tap time of intermediate frequency furnace, control group is to the average out to 32 minutes tap to tap time of ferrosilicon, and experimental group on average only needs 20.75 minutes, tap to tap time declines to a great extent, accordingly, smelt energy consumption also significantly to reduce, and then reduce the production cost of silicon-manganese alloy.
Embodiment 2
In the present embodiment, using industrial silicon as silicon-containing material, detect the rate of recovery of element silicon in industrial silicon, and the rate of recovery of each element in alloy.
1, experimental technique:
(1) utilize mineral hot furnace to smelt silicomanganese and carbon manganese, wherein, the add-on of silicomanganese and carbon manganese, in table 2, obtains liquid silicon manganese alloy;
(2) utilize main frequency furnace to smelt industrial silicon, add silicomanganese Water Quenching Slag and jointly smelt when rubescent, wherein, the add-on of industrial silicon and silicomanganese Water Quenching Slag, in table 2, obtains liquid-state silicon iron alloy;
(3) liquid silicon manganese alloy is joined in main frequency furnace, mix with liquid-state silicon iron alloy, carry out remelting at 1650 degrees Celsius, obtain silicon-manganese alloy.
2, experimental result
Utilize aforesaid method to smelt 7 stoves altogether, the average recovery rate of manganese element remelting is 91%, and the average recovery rate of element silicon remelting is 89%, and the comprehensive average recovery rate of alloy is 88%.
The present embodiment using industrial silicon as silicon-containing material, relative in embodiment 1 using ferrosilicon as silicon-containing material, the comprehensive average recovery rate of element average recovery rate, alloy is all lower than embodiment 1, result explanation, using ferrosilicon as silicon-containing material, element recovery rate is high, and metallurgical effect is good.
In sum, because silicon and manganese can be regulated by the raw material added, and then, according to manganese, the situation of silicon two kinds of elements in remelt experiment, the raw material trade mark can retrodicted out needed for production product, thus, the effective content controlling silicon and manganese in product.The alloy producing the low silicon of high manganese (content of manganese+silicon is more than or equal to 83%) experimental studies have found that through contriver, the manganese-silicon of FeMn65Si17 be produced, as long as just can produce product required for us by From Adding Fesi.
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, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. prepare a method for silicon-manganese alloy, it is characterized in that, comprising:
The first smelting will be carried out, to obtain liquid manganese mixture containing manganese raw material;
Silicon-containing material is carried out the second smelting, to obtain liquid-state silicon mixture, wherein, in described second smelting, utilizes graphite carbon rod to flux; And
Described liquid manganese mixture and described liquid-state silicon mixture are carried out re melting process, to obtain described silicon-manganese alloy.
2. method according to claim 1, is characterized in that, described silicon-containing material and silicomanganese Water Quenching Slag are carried out the second smelting.
3. method according to claim 1, is characterized in that, the add-on of described silicomanganese Water Quenching Slag is the described 2-10% containing manganese raw material and described silicon-containing material total mass, preferably, is 5%.
4. method according to claim 1, is characterized in that, described liquid manganese mixture is the non-standard manganese-silicon of Mn70Si11 type.
5. method according to claim 1, is characterized in that, described silicon-manganese alloy is the silicon-manganese alloy of the high trade mark FeMn64Si27 or FeMn67Si23.
6. method according to claim 1, is characterized in that, described silicon-containing material is broken ferrosilicon or cutting metal silicon.
7. method according to claim 6, is characterized in that, described silicon-containing material is 75 ferrosilicon or degradation product Pure Silicon Metal.
8. method according to claim 1, is characterized in that, the temperature of described re melting process is for being not less than 1600 degrees Celsius.
9. method according to claim 1, is characterized in that, utilizes mineral hot furnace to carry out described first and smelts.
10. method according to claim 1, is characterized in that, utilizes main frequency furnace or refining furnace to carry out described second and smelts.
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Cited By (2)
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| CN107034367A (en) * | 2017-03-21 | 2017-08-11 | 陕西盛华冶化有限公司 | A kind of method of microwave Smelting Simn In A |
| CN111961888A (en) * | 2020-08-10 | 2020-11-20 | 兴和县山河特钢有限公司 | Environment-friendly pollution-free silicon-manganese alloy smelting process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107034367A (en) * | 2017-03-21 | 2017-08-11 | 陕西盛华冶化有限公司 | A kind of method of microwave Smelting Simn In A |
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