CN105087843A - Device for cooling high-temperature direct reduced iron - Google Patents
Device for cooling high-temperature direct reduced iron Download PDFInfo
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- CN105087843A CN105087843A CN201510519429.6A CN201510519429A CN105087843A CN 105087843 A CN105087843 A CN 105087843A CN 201510519429 A CN201510519429 A CN 201510519429A CN 105087843 A CN105087843 A CN 105087843A
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Abstract
The invention discloses a device for cooling high-temperature direct reduced iron. The device comprises a cylinder cooler, a high-temperature chain plate machine and a spraying system, wherein a discharge port of the cylinder cooler is positioned above the tail end of the high-temperature chain plate machine; a slag pool is formed below the tail end of the high-temperature chain plate machine; a first infrared temperature measuring instrument is arranged in the discharge port; the spraying system is arranged on the high-temperature chain plate machine; and a second infrared temperature measuring instrument is arranged at the head end of the high-temperature chain plate machine. The device for cooling the high-temperature direct reduced iron indirectly cools the high-temperature direct reduced iron in the cylinder cooler below a temperature of 500 DEG C under the protection of protective gas to prevent quick oxidization or burst of the high-temperature direct reduced iron, and directly cools the reduced iron to a needed temperature on the high-temperature chain plate machine through the spraying system, so that the cooling speed is fast, and the yield is high.
Description
Technical field
The present invention relates to the device of cooling down high-temperature direct-reduced iron, belong to technical field of ferrous metallurgy.
Background technology
Direct-reduced iron be smart iron powder or ferric oxide in stove through low-carbon (LC) vesicular material that low-temperature reduction is formed, its chemical composition stability, foreign matter content is few, the main raw material being used as Electric furnace steel making, also can be used as the refrigerant of converter steelmaking, if also powder used in metallurgy can be supplied through secondary reduction.Rotary hearth furnace direct-reduction is as one of the major technique of non-blast furnace ironmaking, and it obtains common concern with superiority such as the simple and economical property of flow process are good.Iron-bearing material is made carbonaceous pelletizing by this technique, rotary hearth furnace is entered after oven dry, in stove, Reduction of Pellet Containing Coal Char is metallized pellet by the reduction zone of 1200 ~ 1300 DEG C, the temperatures as high 1100 DEG C that high-temperature direct reduced iron exports through rotary hearth furnace, and needing to be cooled to less than 300 DEG C could store and transport.The domestic and international type of cooling to direct-reduced iron mainly contains two kinds at present: (1) water-bath cools: be directly immersed in the water cooling by high-temperature direct reduced iron, this type of cooling intensity is large, time is short, but direct-reduced iron when high temperature easily by air Quick Oxidation, the direct-reduced iron of high temperature directly contacts the water capacity and easily bursts, reduce yield rate, and finished product water ratio is high; (2) indirectly cool: by passing into protective gas protection in cylinder cooler; cool at drum outer wall water spray simultaneously; this type of cooling can not cause direct-reduced iron to burst; owing to there being shielding gas so direct-reduced iron also can not be oxidized when high temperature; but speed of cooling is slow, and equipment cost is high.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of device of cooling down high-temperature direct-reduced iron, and speed of cooling is fast, and yield rate is high.
Technical scheme: for solving the problems of the technologies described above, the device of a kind of cooling down high-temperature direct-reduced iron of the present invention, comprise cylinder cooler, high temperature chain mat machine and sprinkling system, the discharge port of cylinder cooler is positioned at the top of high temperature chain mat machine tail end, slag bath is provided with below high temperature chain mat machine tail end, be provided with the first infrared thermometer at discharge port, high temperature chain mat machine is provided with sprinkling system, be provided with the second infrared thermometer at the head end of high temperature chain mat machine.
As preferably, described cylinder cooler comprises cylindrical shell, cylindrical shell is provided with opening for feed, discharge port, water-in and water outlet, along drum shaft to being provided with several not connected cooling channels in cylindrical shell, cavity is formed between cooling channel, described opening for feed and discharge port communicate with cooling channel, and described water-in and water outlet communicate with cavity; The barrel of described cylindrical shell is double wall, and be cavity structure between described double wall, described cavity structure is communicated with the cavity between cooling channel; Described cooling channel inwall is axially arranged with at least two group boss along cooling channel, often organize boss and comprise several boss, several boss circumferences are distributed on the inwall of cooling channel.
As preferably, described cooling channel one of them be arranged on tubular axis, all the other cooling channels are uniformly distributed setting along cylinder inboard wall circumference.
Beneficial effect: the device of cooling down high-temperature direct-reduced iron of the present invention; first under the protection of protective gas, in cylinder cooler, less than 500 DEG C are cooled to indirectly to high-temperature direct reduced iron; prevent high-temperature direct reduced iron by Quick Oxidation or explosion; directly be cooled to temperature required by sprinkling system to direct-reduced iron on high temperature chain mat machine again; speed of cooling is fast, and yield rate is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of cylinder cooler in Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 2.
Embodiment
As shown in Figure 1, the device of a kind of cooling down high-temperature direct-reduced iron of the present invention, comprise cylinder cooler 1, high temperature chain mat machine 5 and sprinkling system 3, the discharge port 14 of cylinder cooler 1 is positioned at the top of high temperature chain mat machine 5 tail end, slag bath 6 is provided with below high temperature chain mat machine 5 tail end, be provided with the first infrared thermometer 2 at discharge port 14, high temperature chain mat machine 5 is provided with sprinkling system 3, be provided with the second infrared thermometer 4 at the head end of high temperature chain mat machine 5.
As shown in Figures 2 and 3, cylinder cooler 1 comprises cylindrical shell, cylindrical shell is provided with opening for feed 11, discharge port 14, water-in 13 and water outlet 12, along drum shaft to being provided with several not connected cooling channels 16 in cylindrical shell, described cooling channel 16 one of them be arranged on tubular axis, all the other cooling channels 16 are uniformly distributed setting along cylinder inboard wall circumference, cavity is formed between cooling channel 16, described opening for feed 11 and discharge port 14 communicate with cooling channel 16, and described water-in 13 and water outlet 12 communicate with cavity; The barrel 15 of described cylindrical shell is double wall, and be cavity structure between described double wall, the cavity between described cavity structure with cooling channel 16 is communicated with; Described cooling channel 16 inwall is axially arranged with at least two group boss 17 along cooling channel 16, often organize boss 17 and comprise several boss 17, several boss 17 circumferences are distributed on the inwall of cooling channel 16, boss 17 effectively increases heat interchanging area, the boss of cooling channel inwall promotes to shed downwards after high-temperature direct reduced iron turns to certain altitude with cooling channel again, material in the rotation process of cooling channel is avoided to slide at cylinder body bottom, enhance blending and the heat transfer of material, what material was disperseed more is distributed in cooling channel, improves heat transfer effect.
The present invention in use; high-temperature direct reduced iron is first indirectly cooled to less than 500 DEG C to high-temperature direct reduced iron under the protection of protective gas in cylinder cooler 1; prevent high-temperature direct reduced iron by Quick Oxidation or explosion; cylinder cooler discharge port 14 arranges the first infrared thermometer 2 can monitor drop temperature in real time; when drop temperature is higher than 500 DEG C; improve the rate of cooling of cylinder cooler 1, reduce the rate of cooling of cylinder cooler 1 when drop temperature is less than 400 DEG C.Cylinder cooler 1 direct-reduced iron out is directly cooled to less than 300 DEG C by sprinkling system 3 again on high temperature chain mat machine 5, high temperature chain mat machine 5 is arranged the second infrared thermometer 4 and can monitor drop temperature in real time, when drop temperature is higher than the water yield improving sprinkling system 3 when 300 DEG C, the water yield of sprinkling system 3 is reduced when drop temperature is less than 250 DEG C, the disintegrating slag that high temperature chain mat machine 5 flows down and water flow in slag bath 6, direct speed of cooling is fast, yield rate is high, owing to being directly cool when direct-reduced iron temperature is lower, so oxidized little of direct-reduced iron, can not have an impact to industrial production.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. the device of a cooling down high-temperature direct-reduced iron, it is characterized in that: comprise cylinder cooler, high temperature chain mat machine and sprinkling system, the discharge port of cylinder cooler is positioned at the top of high temperature chain mat machine tail end, slag bath is provided with below high temperature chain mat machine tail end, the first infrared thermometer is provided with at discharge port, high temperature chain mat machine is provided with sprinkling system, is provided with the second infrared thermometer at the head end of high temperature chain mat machine.
2. the device of cooling down high-temperature direct-reduced iron according to claim 1, it is characterized in that: described cylinder cooler comprises cylindrical shell, cylindrical shell is provided with opening for feed, discharge port, water-in and water outlet, along drum shaft to being provided with several not connected cooling channels in cylindrical shell, cavity is formed between cooling channel, described opening for feed and discharge port communicate with cooling channel, and described water-in and water outlet communicate with cavity; The barrel of described cylindrical shell is double wall, and be cavity structure between described double wall, described cavity structure is communicated with the cavity between cooling channel; Described cooling channel inwall is axially arranged with at least two group boss along cooling channel, often organize boss and comprise several boss, several boss circumferences are distributed on the inwall of cooling channel.
3. the device of cooling down high-temperature direct-reduced iron according to claim 2, is characterized in that: described cooling channel one of them be arranged on tubular axis, all the other cooling channels are uniformly distributed setting along cylinder inboard wall circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519429.6A CN105087843A (en) | 2015-08-24 | 2015-08-24 | Device for cooling high-temperature direct reduced iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519429.6A CN105087843A (en) | 2015-08-24 | 2015-08-24 | Device for cooling high-temperature direct reduced iron |
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| Publication Number | Publication Date |
|---|---|
| CN105087843A true CN105087843A (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510519429.6A Pending CN105087843A (en) | 2015-08-24 | 2015-08-24 | Device for cooling high-temperature direct reduced iron |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001255068A (en) * | 2000-03-09 | 2001-09-21 | Daido Steel Co Ltd | Reduced pellet continuous cooling facility |
| CN201942723U (en) * | 2010-12-21 | 2011-08-24 | 钢铁研究总院 | Cylindrical cooling machine |
| CN102586532A (en) * | 2012-03-08 | 2012-07-18 | 江苏沙钢集团有限公司 | Direct reduction iron cooling device |
| CN202482343U (en) * | 2012-03-08 | 2012-10-10 | 江苏沙钢集团有限公司 | Device used for cooling direct reduction iron |
| CN102721285A (en) * | 2012-06-27 | 2012-10-10 | 中国恩菲工程技术有限公司 | Cylindrical cooling machine |
| CN203668439U (en) * | 2013-12-23 | 2014-06-25 | 江苏省冶金设计院有限公司 | Direct reduced iron cooling device for rotary hearth furnace |
| CN104711419A (en) * | 2015-04-02 | 2015-06-17 | 山东理工大学 | Cooling cylinder of reduced iron rotary-cylinder cooling machine |
| CN205024249U (en) * | 2015-08-24 | 2016-02-10 | 江苏省冶金设计院有限公司 | Cooling high temperature directly reduced iron's device |
-
2015
- 2015-08-24 CN CN201510519429.6A patent/CN105087843A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001255068A (en) * | 2000-03-09 | 2001-09-21 | Daido Steel Co Ltd | Reduced pellet continuous cooling facility |
| CN201942723U (en) * | 2010-12-21 | 2011-08-24 | 钢铁研究总院 | Cylindrical cooling machine |
| CN102586532A (en) * | 2012-03-08 | 2012-07-18 | 江苏沙钢集团有限公司 | Direct reduction iron cooling device |
| CN202482343U (en) * | 2012-03-08 | 2012-10-10 | 江苏沙钢集团有限公司 | Device used for cooling direct reduction iron |
| CN102721285A (en) * | 2012-06-27 | 2012-10-10 | 中国恩菲工程技术有限公司 | Cylindrical cooling machine |
| CN203668439U (en) * | 2013-12-23 | 2014-06-25 | 江苏省冶金设计院有限公司 | Direct reduced iron cooling device for rotary hearth furnace |
| CN104711419A (en) * | 2015-04-02 | 2015-06-17 | 山东理工大学 | Cooling cylinder of reduced iron rotary-cylinder cooling machine |
| CN205024249U (en) * | 2015-08-24 | 2016-02-10 | 江苏省冶金设计院有限公司 | Cooling high temperature directly reduced iron's device |
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Application publication date: 20151125 |