CN202814129U - Residual heat utilization system of nickel iron production line using rotary kiln-electric furnace process - Google Patents
Residual heat utilization system of nickel iron production line using rotary kiln-electric furnace process Download PDFInfo
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- CN202814129U CN202814129U CN201220473210.9U CN201220473210U CN202814129U CN 202814129 U CN202814129 U CN 202814129U CN 201220473210 U CN201220473210 U CN 201220473210U CN 202814129 U CN202814129 U CN 202814129U
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Abstract
The utility model relates to a residual heat utilization system of a nickel iron production line using a rotary kiln-electric furnace process. The residual heat utilization system comprises a roasting rotary kiln and a drying kiln, wherein the inside of the roasting rotary kiln is provided with a roasting rotary kiln burner. The residual heat utilization system is characterized in that one end of the drying kiln is provided with a drying kiln heat compensating furnace, the other end of the drying kiln is a fume outlet end, the fume outlet end is connected with a dust remover, the drying kiln heat compensating furnace is connected with the fume outlet end of the roasting rotary kiln through a fume pipe, the inside of the drying kiln heat compensating furnace is provided with a drying kiln burner, a gas inlet of the drying kiln burner is connected with a gas pipeline, an air inlet of the drying kiln burner is connected with an air pipeline, a first inlet of the roasting rotary kiln burner is connected with the gas pipeline, a second inlet of the roasting rotary kiln burner is connected with an electric furnace fume pipe, and a third inlet of the roasting rotary kiln burner is connected with the air pipeline. The residual heat utilization system has the advantages that the residual heat of the electric furnace and the rotary kiln is completely and comprehensively utilized, and the production cost of the nickel iron is reduced.
Description
Technical field
The utility model relates to the bootstrap system of a kind of rotary kiln-mineral hot furnace technique ferronickel production line, belongs to energy-conservation and technical field environmental protection.
Background technology
Laterite nickel ore and producing ferronickel main flow technique is " rotary kiln (RK)-mineral hot furnace (EF) " technique, and its production procedure is: stock yard → screening, fragmentation and mixing dosage → dry kiln → calcination rotary kiln → mineral hot furnace → iron bag desulfurization → refining converter → casting.Wherein dry kiln, calcination rotary kiln, mineral hot furnace all need consume mass energy, are that main production cost forms.
Take production capacity as 50t/h nickel minerals production line as example, mineral hot furnace, calcination rotary kiln, each energy consumption equipment site layout project of dry kiln are as shown in Figure 1 at present.Deliver to deduster 15 after the hot flue gas of discharging from mineral heating furnace flue pipe 12, calcination rotary kiln 13 and dry kiln 14 outlets gathers cooling, its flue gas idiographic flow situation is respectively:
(1) mineral hot furnace (production capacity: 50t ore deposit/h), 500～800 ℃ of ore deposits are fused into molten iron and slag, power consumption 2.75～3.0 * 10
4Spend electricity/time, consumption 550～600 degree electricity/ton ore deposits; By mineral heating furnace flue pipe 12 outlet discharge 800～1100 ℃ ,≤20000Nm
3Enter deduster 15 after the cooling of/h flue gas;
(2) calcination rotary kiln (production capacity: 62.5 t ore deposits/h), the ore deposit that the drying kiln is dried to 200 ℃ lifts temperature to 500～800 ℃, power consumption 81～84 GJ/h(amount to natural gas 2300m
3/ h), consumption 1.3～1.35 GJ/ ton ore deposits; Discharge 350 ℃, 23000Nm by calcination rotary kiln 13 outlets
3Enter deduster 15 after/h flue gas and the cooling of part water vapour, the temperature of calcination rotary kiln 13 discharge ends is 1000 ℃;
(3) (production capacity: 75.8 t ore deposit/h production capacity), the moisture ore deposit of room temperature is lifted temperature to 200 ℃, power consumption 68GJ/h(amount to natural gas 2000m to dry kiln
3/ h), consumption 0.9GJ/ ton ore deposit; 150 ℃, 20000Nm are discharged in dry kiln 14 outlets
3/ h flue gas and part water vapour enter deduster 15, and dry kiln 14 discharge end furnace temperature are 500 ℃.
Therefore, if can fully utilize waste heat, can significantly reduce energy resource consumption, reduce production cost in the time of environmental protection, improve the competitiveness of enterprise.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, the bootstrap system of a kind of rotary kiln-mineral hot furnace technique ferronickel production line is provided, by the comprehensive utilization to mineral hot furnace, calcination rotary kiln waste heat, reduce the energy consumption that ferronickel is produced, solved the dedusting difficult problem of high dustiness, high-temperature furnace gas when reducing cost.
According to the technical scheme that the utility model provides, the bootstrap system of a kind of rotary kiln-mineral hot furnace technique ferronickel production line comprises calcination rotary kiln and dry kiln, and the calcination rotary kiln burner is installed in the calcination rotary kiln; Feature is: an end of described dry kiln is installed the dry kiln afterburning furnace, and the other end of dry kiln is smoke outlet, and smoke outlet is connected with deduster; Described dry kiln afterburning furnace is connected with the smoke outlet of calcination rotary kiln by fume pipe, and the dry kiln burner is installed in the dry kiln afterburning furnace, and the gas inlet of dry kiln burner is connected with gas piping, and the air intlet of dry kiln burner is connected with air duct.
The first import of described calcination rotary kiln burner is connected with gas piping, and the second import of calcination rotary kiln burner is connected with the mineral heating furnace flue pipe, and the triple feed inlet of calcination rotary kiln burner is connected with air duct.
Air duct at described calcination rotary kiln burner triple feed inlet is installed the calcination rotary kiln combustion fan.
Air duct at the air intlet of described dry kiln burner is installed the dry kiln combustion fan.
Discharge end at described calcination rotary kiln is installed feed bin.
The utility model fully utilizes fully by the waste heat to mineral hot furnace, rotary kiln, reduces the production cost of ferronickel.Solved simultaneously the dedusting difficult problem of high dustiness, high-temperature furnace gas.
Description of drawings
Fig. 1 is the schematic diagram of rotary kiln in the prior art-mineral hot furnace technique ferronickel production line.
Fig. 2 is structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete accompanying drawing.
As shown in Figure 2: the bootstrap system of described rotary kiln-mineral hot furnace technique ferronickel production line comprises mineral heating furnace flue pipe 1, calcination rotary kiln burner 2, calcination rotary kiln 3, fume pipe 4, dry kiln burner 5, dry kiln afterburning furnace 6, dry kiln 7, deduster 8, calcination rotary kiln combustion fan 9, dry kiln combustion fan 10, feed bin 11 etc.
As shown in Figure 2, the utility model comprises calcination rotary kiln 3 and dry kiln 7, calcination rotary kiln burner 2 is installed in the calcination rotary kiln 3, the first import of calcination rotary kiln burner 2 is connected with gas piping, the second import of calcination rotary kiln burner 2 is connected with mineral heating furnace flue pipe 1, the triple feed inlet of calcination rotary kiln burner 2 is connected with air duct, and at this air duct calcination rotary kiln combustion fan 9 is installed; One end of described dry kiln 7 is installed dry kiln afterburning furnace 6, and the other end of dry kiln 7 is smoke outlet, and smoke outlet is connected with deduster 8; Described dry kiln afterburning furnace 6 is connected with the smoke outlet of calcination rotary kiln 3 by fume pipe 4, dry kiln burner 5 is installed in dry kiln afterburning furnace 6, the gas inlet of dry kiln burner 5 is connected with gas piping, the air intlet of dry kiln burner 5 is connected with air duct, and at this air duct dry kiln combustion fan 10 is installed;
Discharge end at described calcination rotary kiln 3 is installed feed bin 11.
The course of work of the present utility model is: at first, the high-temperature furnace gas of mineral hot furnace is all directly introduced calcination rotary kiln burners 2 by mineral heating furnace flue pipe 1, by calcination rotary kiln burner 2 carry out concurrent heating or with gas mixing after whole infeed calcination rotary kilns 3; The flue gas of being discharged by the exhanst gas outlet of calcination rotary kiln 3 is all directly introduced in the dry kiln afterburning furnace 6 before the dry kilns 7 by fume pipe 4, by dry kiln burner 5 carry out concurrent heating or with gas mixing after all in the infeed dry kilns 7.
Production line take production capacity as the 50t/h nickel minerals is as example, adopt the comprehensive UTILIZATION OF VESIDUAL HEAT IN of bootstrap system described in the utility model, the hot flue gas of mineral heating furnace flue pipe 1, calcination rotary kiln 3 and dry kiln 7 is delivered to deduster 8 after gathering cooling, and its flue gas idiographic flow situation is:
(1) mineral hot furnace (production capacity: 50 t ore deposits/h), 500～800 ℃ of ore deposits are fused into molten iron and slag, power consumption 2.75～3.0 * 10
4Spend electricity/time, consumption 550～600 degree electricity/ton ore deposits; Discharge 800～1100 ℃, 20000Nm by mineral heating furnace flue pipe 1
3/ h flue gas, flue gas are all directly introduced in the calcination rotary kiln 3;
(2) calcination rotary kiln 3(production capacity 62.5t ore deposit/h), calcination rotary kiln 3 is dried to 200 ℃ ore deposit with the drying kiln and lifts temperature to 500～800 ℃, power consumption 0～84GJ/h; The relative prior art of the power consumption of calcination rotary kiln 3 has been saved 0～3GJ/h, i.e. the flue gas of mineral heating furnace flue pipe 1 discharge has carried out concurrent heating 0～3GJ/h, i.e. concurrent heating is 0～1.3 GJ/ ton ore deposit;
(3) dry kiln 7(production capacity 75.8 t ore deposits/h), dry kiln 7 lifts temperature to 200 ℃ with the moisture ore deposit of room temperature, power consumption 0～34 GJ/h; The relative prior art of the power consumption of dry kiln 7 has been saved 0～0.45 GJ/ ton ore deposit;
(4) last, dry kiln 7 is with 150 ℃, 20000Nm
3Enter deduster 8 after/h flue gas and the cooling of part water vapour, dry kiln 7 discharge end furnace temperature are 500 ℃.
Under the normal production conditions, the average furnace gas temperature of mineral hot furnace enters by 1000 ℃, calcination rotary kiln consumption will be down to below the 0.2GJ/ ton ore deposit by 1.3～1.35 GJ/ ton ore deposits, and dust and low melting point slag all enter calcination rotary kiln in the high-temperature furnace gas, have solved simultaneously the high-temperature dust removal difficult problem of mineral hot furnace furnace gas.The average furnace gas temperature of calcination rotary kiln enters by 350 ℃, and dry kiln consumption will be down to below the 0.3GJ/ ton ore deposit by 0.9 GJ/ ton ore deposit.
The utility model fully utilizes fully by the waste heat to mineral hot furnace, rotary kiln, reduces the production cost of ferronickel.Solved simultaneously the dedusting difficult problem of high dustiness, high-temperature furnace gas.
Claims (5)
1. the bootstrap system of rotary kiln-mineral hot furnace technique ferronickel production line comprises calcination rotary kiln (3) and dry kiln (7), and calcination rotary kiln burner (2) is installed in the calcination rotary kiln (3); It is characterized in that: an end of described dry kiln (7) is installed dry kiln afterburning furnace (6), and the other end of dry kiln (7) is smoke outlet, and smoke outlet is connected with deduster (8); Described dry kiln afterburning furnace (6) is connected with the smoke outlet of calcination rotary kiln (3) by fume pipe (4), dry kiln burner (5) is installed in dry kiln afterburning furnace (6), the gas inlet of dry kiln burner (5) is connected with gas piping, and the air intlet of dry kiln burner (5) is connected with air duct.
2. the bootstrap system of rotary kiln as claimed in claim 1-mineral hot furnace technique ferronickel production line, it is characterized in that: the first import of described calcination rotary kiln burner (2) is connected with gas piping, the second import of calcination rotary kiln burner (2) is connected with mineral heating furnace flue pipe (1), and the triple feed inlet of calcination rotary kiln burner (2) is connected with air duct.
3. the bootstrap system of rotary kiln as claimed in claim 2-mineral hot furnace technique ferronickel production line is characterized in that: at the air duct installation calcination rotary kiln combustion fan (9) of described calcination rotary kiln burner (2) triple feed inlets.
4. the bootstrap system of rotary kiln as claimed in claim 1-mineral hot furnace technique ferronickel production line is characterized in that: the air duct at the air intlet of described dry kiln burner (5) is installed dry kiln combustion fan (10).
5. the bootstrap system of rotary kiln as claimed in claim 1-mineral hot furnace technique ferronickel production line is characterized in that: at the discharge end installation feed bin (11) of described calcination rotary kiln (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220473210.9U CN202814129U (en) | 2012-09-17 | 2012-09-17 | Residual heat utilization system of nickel iron production line using rotary kiln-electric furnace process |
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| CN201220473210.9U CN202814129U (en) | 2012-09-17 | 2012-09-17 | Residual heat utilization system of nickel iron production line using rotary kiln-electric furnace process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840766A (en) * | 2012-09-17 | 2012-12-26 | 无锡龙山科技有限公司 | Waste heat utilizing system for rotary kiln-submerged arc furnace process ferro-nickel production line |
| CN106635167A (en) * | 2017-02-23 | 2017-05-10 | 甘肃俱进循环经济利用有限公司 | Submerged arc furnace capable of preventing charging material from spattering, and rotary kiln combined smelting system |
-
2012
- 2012-09-17 CN CN201220473210.9U patent/CN202814129U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840766A (en) * | 2012-09-17 | 2012-12-26 | 无锡龙山科技有限公司 | Waste heat utilizing system for rotary kiln-submerged arc furnace process ferro-nickel production line |
| CN106635167A (en) * | 2017-02-23 | 2017-05-10 | 甘肃俱进循环经济利用有限公司 | Submerged arc furnace capable of preventing charging material from spattering, and rotary kiln combined smelting system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214072 Jiangsu, Wuxi, Binhu District, Taihu West Road, No. sixth, layer 2188 Patentee after: Jiangsu Yifei Data Technology Co.,Ltd. Address before: 214072 Jiangsu, Wuxi, Binhu District, Taihu road hung Bridge intersection of Wuxi National Industrial Park, building 6 Patentee before: WUXI LONGSHAN TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |