CN108048731A - A kind of method that high silicon and low iron weak magnetic ball milling spits block production silicomangan - Google Patents
A kind of method that high silicon and low iron weak magnetic ball milling spits block production silicomangan Download PDFInfo
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- CN108048731A CN108048731A CN201711215528.0A CN201711215528A CN108048731A CN 108048731 A CN108048731 A CN 108048731A CN 201711215528 A CN201711215528 A CN 201711215528A CN 108048731 A CN108048731 A CN 108048731A
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- ball milling
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- spits
- silicomangan
- weak magnetic
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
- C22C35/005—Master alloys for iron or steel based on iron, e.g. ferro-alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- Organic Chemistry (AREA)
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Abstract
The invention discloses a kind of methods that high silicon and low iron weak magnetic ball milling spits block production silicomangan, it uses ball milling to spit block and substitutes part silica and ferrous material as raw material, and the content of iron, silicon in the silicon, iron content and the silicomangan of required production of block is spat according to ball milling, determine to be incorporated the weight that ball milling in smelting furnace spits block, and melting obtains silicomangan after addition manganese ore, silica and coke in smelting furnace.The present invention is that the metallurgical performance and practice result of block are spat according to ball milling, iron donor of the ferro element in the block as production silicomangan is spat using ball milling completely, and ball milling make use of to spit part silicon donor of the element silicon in the block as production silicomangan, it fully recycles mill of choosing shuttles and spits ferro element and element silicon in the block, on the one hand having recycled ball milling spits block, it solves the environmental problem that ball milling spits block stockpiling land occupation, realizes that waste resource recycles.On the other hand reduce buying high price containing Ferromanganese Ore or ferrous material, achieve the purpose that reduce silicomangan production cost.
Description
Technical field
The invention belongs to metallurgical engineerings and mineral engineering technology field, and in particular to a kind of high silicon and low iron weak magnetic ball milling is spat
The method that block produces silicomangan.
Background technology
The alloy that silicomangan is made of manganese, silicon, iron and a small amount of carbon and other elements is that a kind of purposes is relatively wide, yield
Larger ferroalloy.Silicomangan is the common double deoxidizer of steel-making, desulfurizing agent, and is alloying element important in production.
In existing silicomanganese production technology, generally use manganese ore, Mn-rich slag, silica and coke are as primary raw material；If manganese ore contains
Iron is low, then the donor of suitable iron filings or iron ore as iron in production silicomangan is incorporated, by above-mentioned raw materials in ore deposit heat
It is smelted under the conditions of furnace high-temperature, fundamental reaction can be write as：
Thus silicomangan is just obtained.
Exemplified by producing manganese content as the silicomangan of 18-68%, in existing silicomanganese production technology, using manganese ore, silicon
Stone and coke, the substantially consumption for smelting one ton of manganese-silicon are：Manganese ore（Containing Mn-35%, Fe-3%） 1900-2400kg；Silica
200-300kg；Coke 450-550kg；Pelletizing 100-120kg.About 700 yuan/ton of pelletizing own cost, with steel cuttings, pellet
Iron-bearing materials cost is waited constantly to rise, the production cost of silicomangan is being continuously increased, and restricts the development of silicomanganese production.Using
Ferric manganese ore（Containing Mn-35%, Fe-20%）, then silicomangan production cost rise bigger.How iron donor material cost is solved
The problem of high, seeks a kind of new process of more inexpensive production silicomangan, has really for reducing silicomangan production cost
Border meaning.
Ball milling spits the 10-40mm barren rocks that block is discharge during beneficiating and grinding ore（Also referred to as hard rock）, it is that a kind of industrial solid gives up
Gurry since hardly possible is ground, can not use and need to look for local stockpiling.With the raising of mineral processing production production capacity, ball milling spit number of blocks by
Year increases, it is necessary to increase the place of stockpiling；Because hardness is too high, ore dressing cannot pass through it is ground after recycle, become tired
Disturb the environmental issue of mineral processing production factories and miness.The comprehensive utilization that block is spat to ball milling at present rarely has example.In fact, Iron concentrator is discharged
Ball milling to spit in block be mainly irony element and silica, it is other for the metallic elements such as a small amount of calcium, magnesium, aluminium, barium.Therefore ball milling
It is a kind of wasting of resources to spit block stockpiling, except generating stockpiling expense, also results in environmental protection pressure.
The content of the invention
The purpose of the present invention is to solve technical problem in the prior art, providing a kind of can reduce silicomangan
Production cost and can realize waste resource recycle high silicon and low iron weak magnetic ball milling spit block production silicomangan method.
In order to achieve the above object, the present invention uses following technical scheme：A kind of high silicon and low iron weak magnetic ball milling spits block life
The method for producing silicomangan, this method comprise the following steps：
A, high silicon and low iron weak magnetic ball milling is spat into block drying or drying, removal ball milling spits the fine fraction of block adherency so that ball milling spits block
The following contents of fine fraction 5mm of adherency are no more than 10%, and block is spat to ball milling and carries out gravity treatment, removes poor value, improve ball milling and spit
Block Iron grade；
Ball milling obtained by above-mentioned steps is spat to the content that main component silicon, iron are detected after block mixing B,；
C, the content of silicon, iron in silicon in the block, iron content and the silicomangan of required production is spat according to ball milling, determines that supplying is molten
Ball milling spits the weight of block in furnace, and adds in manganese ore, silica and coke, manganese ore, silica, ball milling in smelting furnace and spit block, coke
Weight ratio for 1 ﹕ 0.15-0.25 ﹕ 0.06-0.20 ﹕ 0.20-0.28, in 1300-1600 DEG C of temperature after above-mentioned raw materials are added in
Melting 90-150 minutes under the conditions of degree, the solid residue after melting is removed to get to silicomangan.
Further, in the step A block fine fraction -5mm is spat by washing ball milling at ore discharge spiral cage of ball mill
Content is no more than 10%.
Further, block is spat in the step A to ball milling and carries out screening removal fine fraction so that ball milling spits the thin of block adherency
Grade -5mm contents are no more than 10%.
Further, block spits ball milling by magnetic separation or jigging in the step A and carries out gravity treatment.
Further, in the step A high silicon and low iron weak magnetic ball milling spit block dioxide-containing silica be more than 30%, iron contains
Amount is respectively smaller than 0.5%, 0.2% more than 20%, S, P content.
Further, high silicon and low iron weak magnetic ball milling spits the average hardness of block and is more than 2000 Ns in the step A, and 93%
High silicon and low iron weak magnetic ball milling spits block granularity more than 5mm, and the metallurgical performance that high silicon and low iron weak magnetic ball milling spits block is：900 DEG C quick-fried
Rate -6mm is split less than 1%, and reduction degree is more than 40%.
Further, smelting furnace is intermediate frequency furnace or mineral hot furnace in the step C.
Further, the fixation carbon content of coke is more than 82% in the step C.
Further, SiO in silica in the step C2Content is more than 97%.
The present invention has the advantages that compared with the prior art：High silicon and low iron weak magnetic ball milling of the present invention spits block production silicon
The method of manganese alloy is spat block using unserviceable barren rock, that is, ball milling of iron ore dressing factory ball mill discharge and is substituted as raw material
Part silica and ferrous material, and spit according to ball milling iron in the silicon, iron content and the silicomangan of required production of block, silicon contains
Amount determines to be incorporated the weight that ball milling in smelting furnace spits block, and melting obtains matter after addition manganese ore, silica and coke in smelting furnace
Measure the silicomangan product that preferably and can be up to state standards.The present invention is the metallurgy such as ingredient, the hardness that block is spat according to ball milling
Performance and practice result mainly using its iron content and silica, spit ferro element in the block as production silicon using ball milling completely
The iron donor of manganese alloy, and ball milling make use of to spit part silicon donor of the element silicon in the block as production silicomangan, fully return
Receipts mill of choosing shuttles spits ferro element and element silicon in the block, has on the one hand recycled ball milling and has spat block, solves ball milling and spits block stockpiling and accounts for
It with the environmental problem in soil, realizes that waste resource recycles, reduces environment stockpiling pressure.On the other hand buying high price is reduced
Containing Ferromanganese Ore or ferrous material and silica, achieve the purpose that reduce silicomangan production cost.
Description of the drawings
Fig. 1 spits block pictorial diagram for high silicon and low iron weak magnetic ball milling of the present invention；
Fig. 2 is the XRD spectrum that high silicon and low iron weak magnetic ball milling of the present invention spits block.
Specific embodiment
With reference to the invention will be further described with reference to the drawings and specific embodiments.
The high silicon and low iron weak magnetic ball milling of certain iron ore dressing factory ball mill discharge is taken to spit block, the weak magnetic ball of the high silicon and low iron
Mill spits block average hardness more than 2000 Ns, and 93% high silicon and low iron weak magnetic ball milling spits block granularity more than 5mm, and metallurgical performance is：
900 DEG C of burst rate -6mm are less than 1%, and reduction degree is more than 40%.Its main component is as shown in table 1.Pictorial diagram is as shown in Figure 1, XRD diagram
Spectrum is as shown in Figure 2.
1 ball milling of table spits block main component and below 5mm grain size contents（%）.
Embodiment 1
Block production silicomangan is spat using above-mentioned high silicon and low iron weak magnetic ball milling, is comprised the following steps：
A, by high silicon and low iron weak magnetic ball milling spit block drying or drying, by ore discharge spiral cage of ball mill wash ball milling spit block or
Person ball milling is spat block carry out screening removal fine fraction so that ball milling spit block adherency the following contents of fine fraction 5mm be no more than 10%, lead to
It crosses magnetic separation or jigging and block progress gravity treatment is spat to ball milling, remove poor value, improve ball milling and spit block Iron grade.
Ball milling obtained by above-mentioned steps is spat to the content that main component silicon, iron are detected after block mixing, the purpose of mixing is B,
Reduce the fluctuation that ball milling spits block Iron grade and dioxide-containing silica wave zone to produce.
C, the content of silicon, iron in silicon in the block, iron content and the silicomangan of required production is spat according to ball milling, determines to match somebody with somebody
Enter the weight that ball milling in intermediate frequency furnace or mineral hot furnace spits block, and add in intermediate frequency furnace or mineral hot furnace chrome ore, silica and
Coke, the fixation carbon content of coke is more than 82%, SiO in silica2Content is more than 97%, and chrome ore, silica, ball milling spit block, coke
Weight ratio be 1 ﹕, 0.15 ﹕, 0.06 ﹕ 0.28, after above-mentioned raw materials are added under 1300 DEG C of temperature conditionss melting 150 minutes, remove
The solid residue after melting is removed to get to silicomangan.
Embodiment 2
Block production silicomangan is spat using above-mentioned high silicon and low iron weak magnetic ball milling, is comprised the following steps：
A, by high silicon and low iron weak magnetic ball milling spit block drying or drying, by ore discharge spiral cage of ball mill wash ball milling spit block or
Person ball milling is spat block carry out screening removal fine fraction so that ball milling spit block adherency fine fraction -5mm contents be no more than 10%, pass through
Magnetic separation or jigging spit ball milling block and carry out gravity treatment, remove poor value, improve ball milling and spit block Iron grade.
Ball milling obtained by above-mentioned steps is spat to the content that main component silicon, iron are detected after block mixing, the purpose of mixing is B,
Reduce the fluctuation that ball milling spits block Iron grade and dioxide-containing silica wave zone to produce.
C, the content of silicon, iron in silicon in the block, iron content and the silicomangan of required production is spat according to ball milling, determines to match somebody with somebody
Enter the weight that ball milling in intermediate frequency furnace or mineral hot furnace spits block, and add in intermediate frequency furnace or mineral hot furnace chrome ore, silica and
Coke, the fixation carbon content of coke is more than 82%, SiO in silica2Content is more than 97%, and chrome ore, silica, ball milling spit block, coke
Weight ratio be 1 ﹕, 0.25 ﹕, 0.20 ﹕ 0.20, after above-mentioned raw materials are added under 1600 DEG C of temperature conditionss melting 90 minutes, remove
The solid residue after melting is removed to get to silicomangan.
Embodiment 3
Block production silicomangan is spat using above-mentioned high silicon and low iron weak magnetic ball milling, is comprised the following steps：
A, by high silicon and low iron weak magnetic ball milling spit block drying or drying, by ore discharge spiral cage of ball mill wash ball milling spit block or
Person ball milling is spat block carry out screening removal fine fraction so that ball milling spit block adherency fine fraction -5mm contents be no more than 10%, pass through
Magnetic separation or jigging spit ball milling block and carry out gravity treatment, remove poor value, improve ball milling and spit block Iron grade.
Ball milling obtained by above-mentioned steps is spat to the content that main component silicon, iron are detected after block mixing, the purpose of mixing is B,
Reduce the fluctuation that ball milling spits block Iron grade and dioxide-containing silica wave zone to produce.
C, the content of silicon, iron in silicon in the block, iron content and the silicomangan of required production is spat according to ball milling, determines to match somebody with somebody
Enter the weight that ball milling in intermediate frequency furnace or mineral hot furnace spits block, and add in intermediate frequency furnace or mineral hot furnace chrome ore, silica and
Coke, the fixation carbon content of coke is more than 82%, SiO in silica2Content is more than 97%, and chrome ore, silica, ball milling spit block, coke
Weight ratio be 1 ﹕, 0.20 ﹕, 0.13 ﹕ 0.24, after above-mentioned raw materials are added under 1450 DEG C of temperature conditionss melting 120 minutes, remove
The solid residue after melting is removed to get to silicomangan.
By further production practices, block is spat by ball milling and produces silicomangan, ball milling is added in and spits block 100kg, silica is matched somebody with somebody
Enter amount and reduce 21kg, in the case where power consumption is constant, theoretical melting electric consumption is compared with addition of preceding decline 37kWh/t, whole production
The cost range of decrease is between 100-189 members/t.Ball milling can be consumed every year spits ten thousand tons of block 0.7-5.
Claims (9)
1. a kind of method that high silicon and low iron weak magnetic ball milling spits block production silicomangan, it is characterised in that this method includes following step
Suddenly：
A, high silicon and low iron weak magnetic ball milling is spat into block drying or drying, removal ball milling spits the fine fraction of block adherency so that ball milling spits block
The following contents of fine fraction 5mm of adherency are no more than 10%, and block is spat to ball milling and carries out gravity treatment, removes poor value, improve ball milling and spit
Block Iron grade；
Ball milling obtained by above-mentioned steps is spat to the content that main component silicon, iron are detected after block mixing B,；
C, the content of silicon, iron in silicon in the block, iron content and the silicomangan of required production is spat according to ball milling, determines that supplying is molten
Ball milling spits the weight of block in furnace, and adds in manganese ore, silica and coke, manganese ore, silica, ball milling in smelting furnace and spit block, coke
Weight ratio for 1 ﹕ 0.15-0.25 ﹕ 0.06-0.20 ﹕ 0.20-0.28, in 1300-1600 DEG C of temperature after above-mentioned raw materials are added in
Melting 90-150 minutes under the conditions of degree, the solid residue after melting is removed to get to silicomangan.
2. a kind of high silicon and low iron weak magnetic ball milling according to claim 1 spits the method for block production silicomangan, feature
It is：It spits block fine fraction -5mm contents by washing ball milling at ore discharge spiral cage of ball mill in the step A and is no more than
10%。
3. a kind of high silicon and low iron weak magnetic ball milling according to claim 1 spits the method for block production silicomangan, feature
It is：Block is spat in the step A to ball milling and carries out screening removal fine fraction so that ball milling spits the fine fraction -5mm contents of block adherency
No more than 10%.
4. a kind of high silicon and low iron weak magnetic ball milling according to claim 1 spits the method for block production silicomangan, feature
It is：Block spits ball milling by magnetic separation or jigging in the step A and carries out gravity treatment.
5. a kind of high silicon and low iron weak magnetic ball milling according to claim 1 spits the method for block production silicomangan, feature
It is：In the step A high silicon and low iron weak magnetic ball milling spit block dioxide-containing silica be more than 30%, iron content be more than 20%, S, P
Content is respectively smaller than 0.5%, 0.2%.
6. a kind of high silicon and low iron weak magnetic ball milling according to claim 1 spits the method for block production silicomangan, feature
It is：In the step A high silicon and low iron weak magnetic ball milling spit block average hardness be more than 2000 Ns, 93% high silicon and low iron weak magnetic
Property ball milling spit block granularity more than 5mm, the metallurgical performance that high silicon and low iron weak magnetic ball milling spits block is：900 DEG C of burst rate -6mm are less than
1%, reduction degree is more than 40%.
7. a kind of high silicon and low iron weak magnetic ball milling according to claim 1 spits the method for block production silicomangan, feature
It is：Smelting furnace is intermediate frequency furnace or mineral hot furnace in the step C.
8. a kind of high silicon and low iron weak magnetic ball milling according to claim 1 spits the method for block production silicomangan, feature
It is：The fixation carbon content of coke is more than 82% in the step C.
9. a kind of high silicon and low iron weak magnetic ball milling according to claim 1 spits the method for block production silicomangan, feature
It is：SiO in silica in the step C2Content is more than 97%.
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| CN201711215528.0A CN108048731A (en) | 2017-11-28 | 2017-11-28 | A kind of method that high silicon and low iron weak magnetic ball milling spits block production silicomangan |
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| CN201711215528.0A CN108048731A (en) | 2017-11-28 | 2017-11-28 | A kind of method that high silicon and low iron weak magnetic ball milling spits block production silicomangan |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823342A (en) * | 2018-06-15 | 2018-11-16 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of recoverying and utilizing method of high silicon and low iron ball milling hard rock |
| CN108842014A (en) * | 2018-06-15 | 2018-11-20 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of weak magnetic high silicon iron ore classified use method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367518A (en) * | 2011-09-29 | 2012-03-07 | 云南文山斗南锰业股份有限公司 | Preparation method of manganese-silicon alloy |
| CN105567967A (en) * | 2016-02-01 | 2016-05-11 | 四川川投峨眉铁合金（集团）有限责任公司 | Production method for smelting manganese-series iron alloys by utilizing crystalline silicon cutting waste powder as reducing agent |
-
2017
- 2017-11-28 CN CN201711215528.0A patent/CN108048731A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367518A (en) * | 2011-09-29 | 2012-03-07 | 云南文山斗南锰业股份有限公司 | Preparation method of manganese-silicon alloy |
| CN105567967A (en) * | 2016-02-01 | 2016-05-11 | 四川川投峨眉铁合金（集团）有限责任公司 | Production method for smelting manganese-series iron alloys by utilizing crystalline silicon cutting waste powder as reducing agent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108823342A (en) * | 2018-06-15 | 2018-11-16 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of recoverying and utilizing method of high silicon and low iron ball milling hard rock |
| CN108842014A (en) * | 2018-06-15 | 2018-11-20 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of weak magnetic high silicon iron ore classified use method |
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