CN100415909C - Production method of silicomangan of sintering powder by rotary kiln and hot filling in ore-smelting electric furnace - Google Patents
Production method of silicomangan of sintering powder by rotary kiln and hot filling in ore-smelting electric furnace Download PDFInfo
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- CN100415909C CN100415909C CNB200610048169XA CN200610048169A CN100415909C CN 100415909 C CN100415909 C CN 100415909C CN B200610048169X A CNB200610048169X A CN B200610048169XA CN 200610048169 A CN200610048169 A CN 200610048169A CN 100415909 C CN100415909 C CN 100415909C
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Abstract
The invention relates to a manufacture method for siliconmanganese that uses rotary kiln sintering powder and hot charges into mine thermoelectricity furnace. It includes the following steps: mixing, sintering powder, hot charging the 5-70mm diameter powder into mine thermoelectricity furnace and the furnace temperature is 680-900 degree centigrade, melting for 6h to generate siliconmanganese mixed solution and draw a charge, separating the dregs and iron, and casting the alloy molten iron into die equipment.
Description
Technical field
The present invention relates to a kind of silicomanganese production method of using rotary kiln sintered powder and hot charging ore-smelting furnace, it belongs to a kind of production method of manganese alloy smelting.
Background technology
The method that iron alloy production at present adopts ore-smelting furnace directly to smelt ore is produced, the production stage of this method is: at first with the fine ore in the ore with after coke powder mixes, adopt sinter machine to sinter mineral into, agglomerating mineral cold conditions after fragmentation, screening adds ore-smelting furnace smelts, and taps a blast furnace to adopt mobile hot metal ladle separation slag, iron.Because aforesaid method uses sinter machine to sinter mineral into, its flue gas environmental pollution is serious; Particularly the flue gas of ore-smelting furnace could discharge because its temperature height needs to enter the sack cleaner dedusting after the air-cooler cooling, so air-cooler not only consumes heat energy but also form thermal pollution.For solving this difficult problem, many people attempt utilizing the flue gas of ore-smelting furnace to carry out cogeneration, but because the fluctuation of all the other heats is very big, make power generation system be difficult to steady running.Therefore, existing iron alloy production method exists that power consumption is high, contaminate environment serious and can't utilize shortcoming such as waste heat.
Summary of the invention
The objective of the invention is to solve existing iron alloy production method exist that power consumption is high, contaminate environment is serious and can't utilize the technological difficulties of waste heat and provide a kind of consume energy low, contaminate environment is little, output is high and the rotary kiln sintered powder of use that can recycle heat energy and the silicomanganese production method of hot charging ore-smelting furnace.
The present invention for the technical scheme that solves above-mentioned technological difficulties and adopt is: use the silicomanganese production method of rotary kiln sintered powder and hot charging ore-smelting furnace, it may further comprise the steps:
A. batching: at first silica, manganese ore, rhombspar, rich manganese slag are become granularity less than the powder of 50mm and be respectively charged into receiver bin with the ferric manganese ore raw material crushing, then prepare burden and mix by the proportioning raw materials of calculating;
B. sintering powder: the kiln tail of mixed powder being sent into rotary kiln through metering, the material that sinters granularity through rotary kiln sintered district into and be 5～70mm is from the rotary kiln end discharging, the temperature in rotary kiln sintered district is 850 ℃-1300 ℃, and the time of material in rotary kiln is 50-70 minute;
C. hot charging ore-smelting furnace: the material that will sinter granularity into and be 5～70mm is packed into by dolly and tremie pipe in the ore-smelting furnace, and the charging temperature of material is 680 ℃-900 ℃, adds coke powder 180～240kg again by ore deposit per ton simultaneously;
D. smelt: material was smelted in ore-smelting furnace 6 hours, became silicomanganese slag iron mixing liquid to come out of the stove;
E. slag iron separates: silicomanganese slag iron mixing liquid is flowed in the fixing calm hot metal ladle, carry out slag iron and separate;
F. cast: the silicomanganese molten iron that removes slag is cast in the mould;
G. recovery waste heat: the high-temperature flue gas of ore-smelting furnace collected and deliver to rotary kiln end and coal dust spray combustion back formation high-temperature gas jointly through pipeline, heating rotary kiln inwall and material, make the temperature in rotary kiln sintered district reach 850 ℃-1300 ℃, drop to 600 ℃ to rotary kiln behind this high-temperature gas sintered material, and then enter the settling pocket of kiln tail, separate crude particle dust, flue gas after the separation enters the waste heat boiler that is located between rotary kiln and the chimney through pipeline, this flue gas heats to waste heat boiler, making waste heat boiler produce temperature is 450 ℃, pressure is the steam of 38.5Mpa, this steam and circular fluid bed live steam pipe and vapour co-generation of power are constant with the energy output that guarantees power generation system.
Because the present invention adopts preheating in rotary kiln, sintered material, and, saved power consumption, accelerated change material speed, made ore-smelting furnace improve output 20%-50% with the electrically heated mineral aggregate with the ore-smelting furnace of directly packing into of the heat material behind the sintering.Adopt fixing calm hot metal ladle to tap a blast furnace, improved the rate of recovery of finished product.Adopt the generating of waste heat boiler recovery waste heat, can reduce the discharging of dust and flue gas, reduce the waste gas Greenhouse effect that discharging causes to sky, alleviate pollution atmosphere and environment.Adopt the generating of waste heat boiler and circular fluid bed paired running, can guarantee that the energy output of power generation system is constant, generating set runs well, and reaches the stable purpose of utilizing waste heat.Therefore, compare with background technology, have that power consumption is low, contaminate environment is little, output is high and can recycle advantage such as heat energy.
Description of drawings
Accompanying drawing is a process flow diagram of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Embodiment 1
As shown in drawings, the silicomanganese production method of rotary kiln sintered powder of the use in the present embodiment and hot charging ore-smelting furnace, it may further comprise the steps:
A. batching: at first silica, manganese ore, rhombspar, rich manganese slag are become granularity less than the powder of 50mm and be respectively charged into receiver bin with the ferric manganese ore raw material crushing, then by the requirement of production silicomanganese product grade, according to the difference of manganese ore manganese content, calculate proportion of raw materials, prepare burden and mix;
B. sintering powder: the kiln tail of mixed powder being sent into rotary kiln through metering, the material that sinters granularity through rotary kiln sintered district into and be 5～70mm is from the rotary kiln end discharging, the temperature in rotary kiln sintered district is 850 ℃-1300 ℃, and the time of material in rotary kiln is 50 minutes;
C. hot charging ore-smelting furnace: the dolly and the tremie pipe of the material that will sinter granularity into and be 5～70mm by being lined with refractory materials packed in the ore-smelting furnace, and the charging temperature of material is 680 ℃, adds coke powder 180kg again by ore deposit per ton simultaneously;
D. smelt: material was smelted in ore-smelting furnace 6 hours, became silicomanganese slag iron mixing liquid to come out of the stove;
E. slag iron separates: silicomanganese slag iron mixing liquid is flowed in the fixing calm hot metal ladle, carry out slag iron and separate;
F. cast: the silicomanganese molten iron that removes slag is cast in the mould.
Be recycle heat energy, this production method also comprises the recovery waste heat step, this recovery waste heat step is: the high-temperature flue gas of ore-smelting furnace is collected and the common high-temperature gas that forms after pipeline is delivered to rotary kiln end and coal dust spray combustion, heating rotary kiln inwall and material, make the temperature in rotary kiln sintered district reach 850 ℃-1300 ℃, drop to 600 ℃ to rotary kiln behind this high-temperature gas sintered material, and then enter the settling pocket of kiln tail, separate crude particle dust, flue gas after the separation enters the waste heat boiler that is located between rotary kiln and the chimney through pipeline, this flue gas heats to waste heat boiler, making waste heat boiler produce temperature is 450 ℃, pressure is the steam of 38.5Mpa, this steam and circular fluid bed live steam pipe and vapour co-generation of power are constant with the energy output that guarantees power generation system.Flue gas after the waste heat boiler heat exchange enters sack cleaner again, enters atmosphere after the dedusting.
Embodiment 2
As shown in drawings, the silicomanganese production method of rotary kiln sintered powder of the use in the present embodiment and hot charging ore-smelting furnace, it may further comprise the steps:
A. batching: at first silica, manganese ore, rhombspar, rich manganese slag are become granularity less than the powder of 50mm and be respectively charged into receiver bin with the ferric manganese ore raw material crushing, then by the requirement of production silicomanganese product grade, according to the difference of manganese ore manganese content, calculate proportion of raw materials, prepare burden and mix;
B. sintering powder: the kiln tail of mixed powder being sent into rotary kiln through metering, the material that sinters granularity through rotary kiln sintered district into and be 5～70mm is from the rotary kiln end discharging, the temperature in rotary kiln sintered district is 850 ℃-1300 ℃, and the time of material in rotary kiln is 60 minutes;
C. hot charging ore-smelting furnace: the dolly and the tremie pipe of the material that will sinter granularity into and be 5～70mm by being lined with refractory materials packed in the ore-smelting furnace, and the charging temperature of material is 800 ℃, adds coke powder 220kg again by ore deposit per ton simultaneously;
D. smelt: material was smelted in ore-smelting furnace 6 hours, became silicomanganese slag iron mixing liquid to come out of the stove;
E. slag iron separates: silicomanganese slag iron mixing liquid is flowed in the fixing calm hot metal ladle, carry out slag iron and separate;
F. cast: the silicomanganese molten iron that removes slag is cast in the mould.
Be recycle heat energy, this production method also comprises the recovery waste heat step, this recovery waste heat step is: the high-temperature flue gas of ore-smelting furnace is collected and the common high-temperature gas that forms after pipeline is delivered to rotary kiln end and coal dust spray combustion, heating rotary kiln inwall and material, make the temperature in rotary kiln sintered district reach 850 ℃-1300 ℃, drop to 600 ℃ to rotary kiln behind this high-temperature gas sintered material, and then enter the settling pocket of kiln tail, separate crude particle dust, flue gas after the separation enters the waste heat boiler that is located between rotary kiln and the chimney through pipeline, this flue gas heats to waste heat boiler, making waste heat boiler produce temperature is 450 ℃, pressure is the steam of 38.5Mpa, this steam and circular fluid bed live steam pipe and vapour co-generation of power are constant with the energy output that guarantees power generation system.Flue gas after the waste heat boiler heat exchange enters sack cleaner again, enters atmosphere after the dedusting.
Embodiment 3
As shown in drawings, the silicomanganese production method of rotary kiln sintered powder of the use in the present embodiment and hot charging ore-smelting furnace, it may further comprise the steps:
A. batching: at first silica, manganese ore, rhombspar, rich manganese slag are become granularity less than the powder of 50mm and be respectively charged into receiver bin with the ferric manganese ore raw material crushing, then by the requirement of production silicomanganese product grade, according to the difference of manganese ore manganese content, calculate proportion of raw materials, prepare burden and mix;
B. sintering powder: the kiln tail of mixed powder being sent into rotary kiln through metering, the material that sinters granularity through rotary kiln sintered district into and be 5～70mm is from the rotary kiln end discharging, the temperature in rotary kiln sintered district is 850 ℃-1300 ℃, and the time of material in rotary kiln is 70 minutes;
C. hot charging ore-smelting furnace: the dolly and the tremie pipe of the material that will sinter granularity into and be 5～70mm by being lined with refractory materials packed in the ore-smelting furnace, and the charging temperature of material is 900 ℃, adds coke powder 240kg again by ore deposit per ton simultaneously;
D. smelt: material was smelted in ore-smelting furnace 6 hours, became silicomanganese slag iron mixing liquid to come out of the stove;
E. slag iron separates: silicomanganese slag iron mixing liquid is flowed in the fixing calm hot metal ladle, carry out slag iron and separate;
F. cast: the silicomanganese molten iron that removes slag is cast in the mould.
Be recycle heat energy, this production method also comprises the recovery waste heat step, this recovery waste heat step is: the high-temperature flue gas of ore-smelting furnace is collected and the common high-temperature gas that forms after pipeline is delivered to rotary kiln end and coal dust spray combustion, heating rotary kiln inwall and material, make the temperature in rotary kiln sintered district reach 850 ℃-1300 ℃, drop to 600 ℃ to rotary kiln behind this high-temperature gas sintered material, and then enter the settling pocket of kiln tail, separate crude particle dust, flue gas after the separation enters the waste heat boiler that is located between rotary kiln and the chimney through pipeline, this flue gas heats to waste heat boiler, making waste heat boiler produce temperature is 450 ℃, pressure is the steam of 38.5Mpa, this steam and circular fluid bed live steam pipe and vapour co-generation of power are constant with the energy output that guarantees power generation system.Flue gas after the waste heat boiler heat exchange enters sack cleaner again, enters atmosphere after the dedusting.
Claims (1)
1. silicomanganese production method of using rotary kiln sintered powder and hot charging ore-smelting furnace, it is characterized in that: it may further comprise the steps:
A. batching: at first silica, manganese ore, rhombspar, rich manganese slag are become granularity less than the powder of 50mm and be respectively charged into receiver bin with the ferric manganese ore raw material crushing, then prepare burden and mix by the proportioning raw materials of calculating;
B. sintering powder: the kiln tail of mixed powder being sent into rotary kiln through metering, the material that sinters granularity through rotary kiln sintered district into and be 5～70mm is from the rotary kiln end discharging, the temperature in rotary kiln sintered district is 850 ℃-1300 ℃, and the time of material in rotary kiln is 50-70 minute;
C. hot charging ore-smelting furnace: the material that will sinter granularity into and be 5～70mm is packed into by dolly and tremie pipe in the ore-smelting furnace, and the charging temperature of material is 680 ℃-900 ℃, adds coke powder 180～240kg again by ore deposit per ton simultaneously;
D. smelt: material was smelted in ore-smelting furnace 6 hours, became silicomanganese slag iron mixing liquid to come out of the stove;
E. slag iron separates: silicomanganese slag iron mixing liquid is flowed in the fixing calm hot metal ladle, carry out slag iron and separate;
F. cast: the silicomanganese molten iron that removes slag is cast in the mould;
G. recovery waste heat: the high-temperature flue gas of ore-smelting furnace collected and deliver to rotary kiln end and coal dust spray combustion back formation high-temperature gas jointly through pipeline, heating rotary kiln inwall and material, make the temperature in rotary kiln sintered district reach 850 ℃-1300 ℃, drop to 600 ℃ to rotary kiln behind this high-temperature gas sintered material, and then enter the settling pocket of kiln tail, separate crude particle dust, flue gas after the separation enters the waste heat boiler that is located between rotary kiln and the chimney through pipeline, this flue gas heats to waste heat boiler, making waste heat boiler produce temperature is 450 ℃, pressure is the steam of 38.5MPa, this steam and circular fluid bed live steam pipe and vapour co-generation of power are constant with the energy output that guarantees power generation system.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200610048169XA CN100415909C (en) | 2006-08-17 | 2006-08-17 | Production method of silicomangan of sintering powder by rotary kiln and hot filling in ore-smelting electric furnace |
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| CN103484674B (en) * | 2013-09-23 | 2015-05-13 | 河南省西保冶材集团有限公司 | Raw material heating and pre-reduction technology in production process of iron alloy |
| CN103670545A (en) * | 2013-11-29 | 2014-03-26 | 偏关县晋电化工有限责任公司 | Power generation system with circulating fluidized bed boiler |
| CN103836997A (en) * | 2013-11-29 | 2014-06-04 | 偏关县晋电化工有限责任公司 | Flue gas waste heat utilization system of rotary kiln |
| CN103673645A (en) * | 2013-11-29 | 2014-03-26 | 偏关县晋电化工有限责任公司 | Power-generating coupling system for waste heat boilers |
| FI127451B (en) * | 2015-11-24 | 2018-06-15 | Outotec Finland Oy | Method and apparatus for preheating and smelting manganese ore sinter |
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| CN107190138A (en) * | 2017-06-08 | 2017-09-22 | 江苏省冶金设计院有限公司 | A kind of method and device that manganese-silicon is prepared using poor ferrous manganese ore |
| CN108411131B (en) * | 2018-03-28 | 2019-12-06 | 中冶东方工程技术有限公司 | Manganese-silicon alloy production system and manganese-silicon alloy production process |
| CN108866367A (en) * | 2018-07-24 | 2018-11-23 | 深圳市中科睿金贵材科技有限公司 | A kind of copper-silver alloy conducting wire and preparation method thereof |
| CN110257694A (en) * | 2019-06-12 | 2019-09-20 | 内蒙古普源铁合金有限责任公司 | A kind of silicomanganese preparation process |
| CN113340112B (en) * | 2021-06-04 | 2023-05-23 | 宁夏昆仑高科硅制品有限公司 | Energy-saving and environment-friendly comprehensive smelting system for silicon-manganese alloy |
| CN113981210A (en) * | 2021-10-29 | 2022-01-28 | 吉铁铁合金有限责任公司 | Production process for producing manganese series ferroalloy by roasting manganese ore |
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