阅读说明：本技术 利用变频感应熔化炉重熔高纯硅铁合金粉粒的方法 (Utilize the method for variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle ) 是由 翟小煜 姜玉华 周启全 于 2019-08-09 设计创作，主要内容包括：利用变频感应熔化炉重熔高纯硅铁合金粉粒的方法,工序为：(1)根据高纯硅铁合金的电磁特性和物理特性,设计变频感应熔化炉系统；(2)对投入变频感应炉的高纯硅铁合金粉粒按批次进行入炉前化验；(3)通过加料装置将高纯硅铁合金粉粒加入变频感应炉内重熔；(4)根据高纯硅铁合金渣的特性选用石墨棒或硅化碳棒做适当的机械搅拌；(5)待高纯硅铁合金全部熔化,升温至1350℃-1400℃,净化5-10min；(6)快速出炉浇铸成厚度小于50mm自然块,炉内需余留10%-15%的残液,提高起熔功率。本发明解决高纯硅铁合金大块料经破碎、精整、筛分后的粉粒得到进一步重复利用,提升产品纯度及回收率。(Utilize the method for variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle, process are as follows: (1) according to the electromagnetic property and physical characteristic of high purity ferrosilicon alloy, design variable frequency induction melting furnace system；(2) the high purity ferrosilicon alloy powder particle of investment frequency-conversion induction furnace chemically examine into stokehold by batch；(3) high purity ferrosilicon alloy powder particle is added by variable frequency induction refusion in the stove by feeding device；(4) graphite rod or silication carbon-point is selected to do mechanical stirring appropriate according to the characteristic of high purity ferrosilicon Fe alloy slag；(5) it is all melted to high purity ferrosilicon alloy, is warming up to 1350 DEG C -1400 DEG C, purify 5-10min；(6) quick tapping is cast into thickness less than 50mm nature block, and furnace domestic demand remains the raffinate of 10%-15%, improved molten power.The present invention solves powder of the high purity ferrosilicon alloy bulk material after broken, finishing, screening and is further reused, and promotes product purity and the rate of recovery.)

1. using the method for variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle, it is characterized in that: being melted using variable frequency induction Furnace remelting high purity ferrosilicon alloy powder particle, by following process flow production, the high purity ferrosilicon alloy material of recycling high-purity:

(1) according to the electromagnetic property and physical characteristic of high purity ferrosilicon alloy, it is specifically designed variable frequency induction melting furnace system；

(2) the high purity ferrosilicon alloy powder particle of investment frequency-conversion induction furnace chemically examine into stokehold by batch；

(3) gradually high purity ferrosilicon alloy powder particle is added in frequency-conversion induction furnace by feeding device and carries out remelting, in reflow process In ensure not taking in furnace fluffy, do not agglomerate, keep high purity ferrosilicon alloy in furnace in a molten state；

(4) graphite rod or silication carbon-point is selected to do mechanical stirring appropriate according to the characteristic of high purity ferrosilicon Fe alloy slag；

(5) it is all melted to high purity ferrosilicon alloy, is warming up to 1350 DEG C -1400 DEG C, purify 5-10min；

(6) quick tapping is cast into thickness less than 50mm nature block, and furnace domestic demand remains the raffinate of 10%-15%, improved molten power.

2. a kind of method using variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle according to claim 1, Be characterized in: specially designed variable frequency induction melting furnace system, key technology require as follows:

(1) the variable frequency induction melting furnace type of furnace and variable-frequency power sources power depend on specific yield (annual output)；

(2) special designing variable frequency induction melting furnace inductor is different from common intermediate frequency furnace inductor；

(3) special designing variable-frequency power sources power density, frequency (500-1000Hz), connection type and variable frequency induction melting furnace phase Match；

(4) it using the magnetic screen (magnetic yoke) of non-water cooling, should be arranged dual receipts magnetic system (inside and outside short-circuited conducting sleeve), reduce power consumption.

3. a kind of method using variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle according to claim 2, It is characterized in: the auxiliary equipment and material that variable frequency induction melting furnace system must configure are as follows:

(1) provide main power supply system by the capacity of variable-frequency power sources (comprising high-tension switch cabinet and rectifier transformer)；

(2) accessory power supply, hydraulic, water pump, dust collecting system are provided by variable frequency induction furnace system；

(3) variable-frequency power sources and furnace body cooling water because of cooling condition and require different, it is necessary to separate.Variable-frequency power sources is closed using distilled water Formula is cooling, and furnace body is cooling using softened water enclosed；

(4) the integrated form bag collection system in mating remelting and casting process；

(5) according to the characteristic of high purity ferrosilicon alloy powder particle, acid liner material is selected, brickwork and sintering process are provided；

(6) high-temperature stirring, which can be used, manually or mechanically stirs, and stirring material selects high strength graphite stick or silicon carbide rod；

(7) feeding device uses oscillatory type charger or screw type pipeline conveyer；

(8) it is carried out as washery slag mode depending on furnace wall dross situation using remelting steel, reduces furnace wall and hang.

Technical field

The invention belongs to field of metallurgy, in particular to a kind of to utilize variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle Method.

Background technique

High purity ferrosilicon alloy generallys use metallurgical submerged arc electric arc furnaces (mineral hot furnace), according to a certain ratio to raw ore, in mine heat Carry out high temperature reduction in furnace, obtain the high purity ferrosilicon alloy of different grades, it is blocking through casting, using it is broken, finishing, screen High purity ferrosilicon alloy to variable grain size is supplied to iron and steel enterprise as the additive of molten steel, deoxidier, nodulizer, profit and educates The materials such as agent.Can generate about 8-10% in broken, finishing, screening process, high purity ferrosilicon alloy powder particle of the granularity less than 3mm and Slag, the meticulous high purity ferrosilicon alloy powder particle in this part and slag are due to excessively high (the ton unit consumption 4500-4800Kw.h/ of smelting cost T), and easily sucked by dust collecting system, so cannot directly enter mineral hot furnace carries out secondary smelting, need a kind of novel device and work Skill carries out remelting, removal of impurities processing to it and increases Business Economic Benefit to improve the recovery rate of high purity ferrosilicon alloy product.

Summary of the invention

The present invention current existing mineral hot furnace to high purity ferrosilicon alloyed powder smelt recycling there are aiming at the problem that, provide one The method that kind utilizes variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle, to reach small investment, technique is easy to control, is extended Property is strong, can be recycled, purifies the effect of a variety of grade high purity ferrosilicon alloy powder particles.

The technical scheme is that such:

Using the method for variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle, the process flow of this method is as follows:

1, according to the electromagnetic property and physical characteristic of high purity ferrosilicon alloy, variable frequency induction melting furnace system is designed；

2, the high purity ferrosilicon alloy powder particle of investment frequency-conversion induction furnace chemically examine into stokehold by batch；

3, gradually high purity ferrosilicon alloy powder particle is added in frequency-conversion induction furnace by feeding device and carries out remelting, in reflow process Ensure not taking in furnace fluffy, do not agglomerate, keeps high purity ferrosilicon alloy in furnace in a molten state；

4, graphite rod or silication carbon-point is selected to do mechanical stirring appropriate according to the characteristic of high purity ferrosilicon Fe alloy slag；

5, it is all melted to high purity ferrosilicon alloy, is warming up to 1350 DEG C -1400 DEG C, purify 5-10min；

6, quick tapping is cast into thickness less than 50mm nature block, and furnace domestic demand remains the raffinate of 10%-15%, improved molten power；

7, it weighs after finished product high purity ferrosilicon alloy is cooling stacking, into warehouse for finished product.

The present invention has following significant benefit:

Frequency-conversion induction furnace can be directly heated to metal, metal alloy, semiconductor material based on electromagnetic inductive heating principle A kind of remelting device, be widely used in metal casting, it is diathermanous, quenching etc. mechanical processing industries.The present invention is namely based on frequency conversion sense Furnace principle is answered, special designing is targetedly carried out to core component, is proposed a kind of high using the remelting of variable frequency induction melting furnace The method and process flow of pure silicon alloy powder can carry out removal of impurities purification to high purity ferrosilicon alloy, improve high purity ferrosilicon alloy Recovery rate.The equipment investment of this method is less, ton power consumption is low, occupation area of equipment is smaller, work circumstances safe, without dirt Dye is conducive to environmental protection, and economic benefits, extendability is strong, and the rate of recovery of high purity ferrosilicon alloy reaches 93% or more, comprehensive ton list Consumption is lower than 1350Kw.h/t, and furnace lining average life span is not less than 400 heats.It efficiently solves to the secondary of high purity ferrosilicon alloy powder particle It recycles, there is extremely strong promotional value and meaning in the ferroalloy industry.

Specific embodiment

Utilize the method for variable frequency induction melting furnace remelting high purity ferrosilicon alloy powder particle.

1, the process flow of this method is as follows:

(1) according to the electromagnetic property and physical characteristic of high purity ferrosilicon alloy, variable frequency induction melting furnace system is designed；

(2) the high purity ferrosilicon alloy powder particle of investment frequency-conversion induction furnace chemically examine into stokehold by batch；

(3) gradually high purity ferrosilicon alloy powder particle is added in frequency-conversion induction furnace by feeding device and carries out remelting, in reflow process In ensure not taking in furnace fluffy, do not agglomerate, keep high purity ferrosilicon alloy in furnace in a molten state；

(4) graphite rod or silication carbon-point is selected to do mechanical stirring appropriate according to the characteristic of high purity ferrosilicon Fe alloy slag；

(5) it is all melted to high purity ferrosilicon alloy, is warming up to 1350 DEG C -1400 DEG C, purify 5-10min；

(6) quick tapping is cast into thickness less than 50mm nature block, and furnace domestic demand remains the raffinate of 10%-15%, improved molten function Rate；

(7) it weighs after finished product high purity ferrosilicon alloy is cooling stacking, into warehouse for finished product.

2, the design and type selecting of variable frequency induction melting furnace system.

(1) variable frequency induction melting furnace type of furnace size and configuration variable-frequency power sources power depend on specific yield (annual output)；

(2) inductor of variable frequency induction melting furnace of the present invention is different from common intermediate frequency furnace inductor；

(3) with the magnetic screen (magnetic yoke) and dual receipts magnetic system (inside and outside short-circuited conducting sleeve) of non-water cooling, power consumption is reduced；

(4) variable-frequency power sources power density, frequency (500-1000Hz) and connection type and variable frequency induction melting furnace phase are specially designed Matching.

2, the auxiliary equipment and material that must be configured by the requirement of variable frequency induction melting furnace system.

(1) provide main power supply system by the capacity of variable-frequency power sources (comprising high-tension switch cabinet and rectifier transformer)；

(2) accessory power supply, hydraulic, water pump, dust collecting system are provided by variable frequency induction furnace system；

(3) variable-frequency power sources and furnace body cooling water because of cooling condition and require different, it is necessary to separate.Variable-frequency power sources is closed using distilled water Formula is cooling, and furnace body is cooling using softened water enclosed；

(4) the integrated form bag collection system in mating remelting and casting process；

(5) according to the characteristic of high purity ferrosilicon alloy powder particle, acid liner material is selected, brickwork and sintering process are provided；

(6) high-temperature stirring, which can be used, manually or mechanically stirs, and stirring material selects high strength graphite or silicon carbide rod；

(7) feeding device uses oscillatory type charger or screw type pipeline conveyer；

(8) it is carried out as washery slag mode depending on furnace wall dross situation using remelting steel, reduces furnace wall dross, guarantee size of burner hearth；

3, ancillary equipment can be added by the requirement of variable frequency induction melting furnace system.

(1) automatic feed mechanism；

(2) manually or automatically material-feeding mechanism；

(3) manually or automatically high-temperature stirring device；

(4) electric and pneumatic furnace ramming machine.