CN201288201Y - Coal based ferrum redactum rotary kiln - Google Patents

Coal based ferrum redactum rotary kiln Download PDF

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Publication number
CN201288201Y
CN201288201Y CNU2008201735490U CN200820173549U CN201288201Y CN 201288201 Y CN201288201 Y CN 201288201Y CN U2008201735490 U CNU2008201735490 U CN U2008201735490U CN 200820173549 U CN200820173549 U CN 200820173549U CN 201288201 Y CN201288201 Y CN 201288201Y
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rotary kiln
cooling
kiln
furnace
furnace body
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CNU2008201735490U
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Chinese (zh)
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胡长春
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胡长春
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Abstract

The utility model relates to a coal-based reduced iron rotary kiln primarily used for producing sponge iron, wherein a kiln furnace body housing of the rotary kiln is provided with a cooling water cavity, a furnace body outlet is equipped with an air intake pipeline which is hermetically connected with a cooling pond, and a furnace lining in the furnace body is provided with an anti-ring apparatus. After adopting the coal-based reduced iron rotary kiln, three difficulties are solved, such as the ringing of the materials in the rotary kiln, the fully reducing atmosphere in the reducing section and the after-oxidizing of the production, and the production efficiency and the quality of the production are greatly improved.

Description

一种^还原铁回转窑 One kind of kiln reduced iron ^

技术领域 FIELD

本实用新型涉及一种冶炼设备,特别涉及一种煤基还原铁回转窑。 The present invention relates to a metallurgical apparatus, and particularly to a rotary kiln coal-based reduced iron. 背景技术 Background technique

目前中国海绵铁的生产方式主要是采用工艺稳定煤基隧道窑法,但无论从工厂规模、占地面积、设备自动程度、劳动强度和环境、物料消耗指 China's sponge iron production process is stable and is used mainly coal-based tunnel kiln process, but in terms of plant size, footprint, the device automatically degree, the environment and labor intensity, material consumption refers

标等都决定了这种工艺、工装的生产成本很高;产量低,最终造成工厂的效益很差。 And so we decided to mark this process, high cost of production tooling; low production, ultimately resulting in poor efficiency of the plant. 传统"链蓖机-回转窑-冷却筒"煤基回转窑法在中国因原料价格较高以及原料特点等问题造成产品生产成本高,工装时常出问题,致使已上马的几条生产线生产不能正常运行。 Traditional "chain grate machine - rotary kiln - cooling tube" method of coal-based rotary kiln due to higher raw material prices and raw material characteristics and other problems caused by high production costs, tooling is often a problem in China, resulting in several production lines has launched production can not be normal run. 同时对于各种含铁的废渣废料, 以及品位较低的矿石均无法采用这种方法加以利用,浪费了大量的资源。 At the same time be utilized for a variety of iron-containing sludge waste, as well as lower grade ore are unable to use this method, we waste a lot of resources. 且现有的回转窑多为两段式设计,占地面积大,能耗较高,且由于结构缺陷无法保证充分的还原气氛,使得被还原出的海绵铁往往在出口处又被氧化,从而降低了生产的效率和产品的品质,而窑炉内由于物料流动性较差, 极易在炉体内聚集成块从而降低窑炉的生产效率和使用寿命,并大大增加了设备的运转能耗。 And a plurality of conventional two-stage rotary kiln design, large area, high energy consumption, and since the structural defects can not guarantee a sufficient reducing atmosphere, so that the sponge iron is reduced and tends to be oxidized at the outlet, whereby reduced production efficiency and product quality, but the material inside the furnace due to the poor flowability, polyethylene manifold easily in the furnace body to reduce the production efficiency and service life of the furnace, and greatly increases the energy consumption of the operation of the device. 发明内容 SUMMARY

针对现有煤基还原铁回转窑存在的诸多不足之处,本实用新型提供了一种新型的煤基还原铁回转窑,该回转窑的窑炉体外套中设置有冷却水腔,炉体出口处设置有进风管路并与冷却水池密封连接,炉体内的炉衬上设有防结圏装置。 For many deficiencies of the prior coal-based reduced iron kiln, the present invention provides a novel coal-based reduced iron kiln, the kiln furnace body provided with a cooling water jacket chamber, furnace outlet there is provided at the air inlet conduit connected to the cooling pond and sealed, provided with means anticaking rings of lining in the furnace body. 采用这种结构后,有效解决了回转窑内物料结圈、确保还原段内的充分还原气氛和产品后期氧化三大难题,大大提高生产的效率和产品的品质。 With this configuration, an effective solution to the rotary kiln ring formation materials to ensure adequate reducing atmosphere and oxidation of the three major problems in the late goods undo segments, greatly improving production efficiency and the quality of the product.

本实用新型采用的具体技术方案是: 一种煤基还原铁回转窑,包括炉体, 炉体外套中设置有冷却水腔;炉体出口处设置有进风管路,并与冷却水池密封连接;炉体内的炉村上设有防结圈装置,冷却水腔与冷却水管路连接。 In particular the present invention uses the technical solution is: A rotary kiln coal-based reduced iron, comprising a furnace body provided with a cooling water jacket chamber; outlet of the furnace body is provided with inlet pipe, and connected to a cooling tank seal ; Murakami furnace the furnace body is provided preventing ring formation apparatus, the cooling water chamber with the cooling pipes are connected.

由于在炉体外套中设置有冷却水腔,可以有效的对炉体进行降温,防止由于炉体过热而导致的炉体变形及寿命缩短,提高了炉体的使用寿命,冷却水升温后可以加以利用如供热发电等,有效的利用了生产过程中的余热,提高了能源的利用率为企业降低了成本;炉体出口处设置有进风管路,改变了现有回转窑进风口与进料口处在同一侧的弊端,使得还原剂与原料有了充分的接触,同时提高了反应出口的温度,实现了高温出料,这样就保证了在整个窑体内有一个充分的还原剂氛围,提高了原料中铁的还原率及所得产品中纯铁的含量,所得海绵铁的Fe百分比含量大于97%,较现有的工艺和设备有了极大的提高;炉体出口与冷却水池密封连接,这样在反应完成后,所得的产品可以直接从出口处掉落到冷却水池中,即达到了将产品降温的目的,又保证了在冷却过 Since the water chamber provided with a cooling jacket in the furnace, the furnace may be effective for cooling, to prevent deformation of the furnace and the furnace life due to overheating shortened, improving the life of the furnace, the cooling water can be heated the power generation by utilizing the like, effective use of waste heat in the production process, improve the utilization of energy reduces the cost for the enterprise; furnace outlet is provided with inlet line, it changes the existing kiln with the intake air inlet discharge port at the same side of the drawbacks, such that the reducing agent has sufficient contact with the raw material, while increasing the temperature of the outlet of the reaction, the material to achieve a high temperature, thus ensuring the body throughout the kiln has a sufficient reducing atmosphere, improve the reduction rate of iron in the raw material and the iron content of the resulting product, Fe content of the resulting sponge iron is a percentage greater than 97%, compared with conventional process and equipment has greatly improved; furnace outlet of the cooling pond sealed connection, so that after completion of the reaction, the resulting product can be dropped from the outlet of the cooling tank, i.e. to achieve the purpose of cooling the product, but also ensures that cooled 中产品不与空气相接触,这样就确保了产品不会被二次氧化从而保证了产品的品质, 而冷却水升温后可以进行二次利用,也提高了能源的使用效率,降低了企业的 The product is not in contact with the air, thus ensuring that the product is not to ensure the quality of secondary oxidation products, and the cooling water may be heated secondary use, but also to improve the energy efficiency and reduce the enterprise

生产成本;炉体内的炉衬上设有防结圈装置,该防结圈装置一般釆用与炉衬制为一体的内挡墙,这样当物料运动到内挡墙处时,会被二次分散,增大了原料与还原剂的接触面积提高了反应的效率,同时防止了原料在炉体内聚集成块结圈,提高了炉体的使用寿命,也减轻了设备的运转压力,降低了整个生产的能耗和企业的成本。 Production costs; ring formation with anti means lining the furnace body, the prevention means generally preclude the use of ring formation with an inner lining made integrally wall, so that when the material is moved into the retaining wall, the secondary will be dispersed, increases the contact area of ​​the starting material with a reducing agent increases the reaction efficiency, while preventing the raw material in the furnace body polyethylene manifold ring formation, improve the life of the furnace, but also reduce the operating pressure of the apparatus, reducing the overall production energy consumption and costs.

冷却水池中有设置有产品收集装置,该装置可以采用埋刮板机,这样就可以将在冷却水池中冷却的海绵铁进行回收,不会在冷却水池中过度聚集而导致水池的堵塞。 There is provided a cooling pond product collecting means, the apparatus may employ embedded scraper, which can be cooled in a cooling pond for recycling iron sponge, not excessively accumulated in the cooling pond resulting in clogging of the pool. 本实用新型回转窑中未提及的部分,如动力系统及供热送料系统等,均采用现有的各种技术设备。 Portion of the present invention is not mentioned in the rotary kiln, and heating systems such as the power feeding system, etc., are various prior art devices.

综上所述,采用本实用新型提供的这种回转窑后,有效解决了回转窑内物料结圈、确保还原段内的充分还原气氛和产品后期氧化三大难题,大大提高生产的效率和产品的品质,采用这种回转窑并配合使用现有的浮选等技术,不但可以提高金属铁的品位还可以把还原原料中有价值有色金属充分回收,使黑色金属产品中Cu、 pb等有害元素的残留得到有效的降低,同时可以获得有价值的有色金属产品;同时能源和还原剂的消耗可大大减少;降低了生产运行成本提高了企业的盈利。 In summary, the use of such a rotary kiln of the present invention provides an effective solution to the rotary kiln ring formation materials to ensure adequate reducing atmosphere and oxidation of the three major problems in the late goods undo segments, greatly improving production efficiency and product quality, and use this in conjunction with a conventional rotary kiln flotation technology, not only can improve the quality of the metallic iron feedstock is also possible to restore the valuable non-ferrous metal sufficiently recovered, so that the black metal products Cu, pb and other harmful elements the residue is effectively reduced, and can gain valuable non-ferrous metal products; at the same time energy consumption and reducing agent can be greatly reduced; reduce production operating costs to improve the profitability of enterprises. 附图说明 BRIEF DESCRIPTION

图1为本实用新型所述煤基还原铁回转窑的结构示意图; 图2为图1中A处的放大图; 图3为图1中B处的放大图; 1 a schematic view of a new structure of the kiln reduced iron group present utility coal; FIG. 2 is an enlarged view at A 1; FIG. 3 is an enlarged view at B of FIG. 1;

图中l冷却水出口, 2冷却水入口, 3冷却水管路,4炉体出口, 5进风管路,6冷却水池,7内挡墙,8冷却水腔,9冷却水腔进水口。 FIG. L cooling water outlet, a cooling water inlet 2, a cooling water conduit 3, 4 furnace outlet, the inlet conduit 5, cooling water tank 6, the inner wall 7, the cooling water chamber 8, the chamber 9 the cooling water inlet. 具体实施方式 Detailed ways

一种煤基还原铁回转窑,包括炉体,炉体外套中设置有冷却水腔8;炉体出口4处设置有进风管路5,并与冷却水池6密封连接;炉体内的炉衬上设有防结圈装置,所述的防结圏装置为与炉衬制为一体的内挡墙7,所述的冷却水池6中有设置有产品收集装置,所述的冷却水腔8与冷却水管路3连接。 One kind of coal-based reduced iron kiln, comprising a furnace body provided with a cooling water jacket chamber 8; furnace outlet 4 is provided with inlet conduit 5, and 6 sealingly connected to the cooling tank; the lining of the furnace body with anti ring formation apparatus, the rings of the junction means preventing lining made integrally with the inner wall 7, the cooling tank 6 is provided with a product collecting means, the cooling chamber 8 and the cooling water pipe 3-way connection.

冷却水腔8上设置有进水口和出水口,冷却水管路3上设置有冷却水出口1 和冷却水入口2,并通过冷却水腔进水口9与冷却水腔8连接。 A cooling chamber 8 is provided with a water inlet and a water outlet, a cooling water passage 3 is provided with a cooling water outlet and the cooling water inlet 2, and inlet 9 connected to the cooling water chamber 8 through the cooling water chamber.

Claims (4)

1. 一种煤基还原铁回转窑,包括炉体,其特征在于:炉体外套中设置有冷却水腔(8);炉体出口(4)处设置有进风管路(5),并与冷却水池(6)密封连接;炉体内的炉衬上设有防结圈装置。 A coal-based reduced iron kiln, comprising a furnace body, characterized in that: the furnace water jacket is provided with a cooling chamber (8); furnace outlet (4) is provided at the air intake conduit (5), and seal connected to a cooling tank (6); with anti-node ring means lining the furnace body.
2. 根据权利要求1所述的煤基还原铁回转窑,其特征在于:所述的防结圏装置为与炉衬制为一体的内挡墙(7)。 The coal-based reduced iron as claimed in claim 1 of the kiln, wherein: said anti-rings of the junction device is made integrally with the lining of the inner wall (7).
3. 根据权利要求1所述的回转窑,其特征在于:所述的冷却水池(6 )中设置有产品收集装置。 3. The rotary kiln according to claim 1, wherein: said cooling tank (6) is provided with a product collection apparatus.
4. 根据权利要求1所述的回转窑,其特征在于:所述的冷却水腔(8 )与冷却水管路(3 )连接。 4. The rotary kiln of claim 1, wherein: the cooling water chamber (8) and the cooling pipes (3) is connected.
CNU2008201735490U 2008-10-23 2008-10-23 Coal based ferrum redactum rotary kiln CN201288201Y (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102538446A (en) * 2012-01-21 2012-07-04 胡长春 Dynamic cooling system for rotary kiln
CN102538447A (en) * 2012-01-21 2012-07-04 胡长春 Dynamical cooling system for rotary kiln
CN102564116A (en) * 2012-01-21 2012-07-11 胡长春 Dynamic cooling system for rotary kiln
CN102564130A (en) * 2012-01-21 2012-07-11 胡长春 Continuous temperature control smelting system integrating rotary kiln with melting furnace
CN102583464A (en) * 2012-01-21 2012-07-18 胡长春 Rotary kiln gas-distribution and cooling system
CN102583463A (en) * 2012-01-21 2012-07-18 胡长春 Rotary kiln gas-distribution and cooling system
CN104630407A (en) * 2015-02-13 2015-05-20 唐竹胜 Whole-body type external-heating muffle type rotary kiln

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102538446A (en) * 2012-01-21 2012-07-04 胡长春 Dynamic cooling system for rotary kiln
CN102538447A (en) * 2012-01-21 2012-07-04 胡长春 Dynamical cooling system for rotary kiln
CN102564116A (en) * 2012-01-21 2012-07-11 胡长春 Dynamic cooling system for rotary kiln
CN102564130A (en) * 2012-01-21 2012-07-11 胡长春 Continuous temperature control smelting system integrating rotary kiln with melting furnace
CN102583464A (en) * 2012-01-21 2012-07-18 胡长春 Rotary kiln gas-distribution and cooling system
CN102583463A (en) * 2012-01-21 2012-07-18 胡长春 Rotary kiln gas-distribution and cooling system
CN102564130B (en) * 2012-01-21 2014-05-07 胡长春 Continuous temperature control smelting system integrating rotary kiln with melting furnace
CN104630407A (en) * 2015-02-13 2015-05-20 唐竹胜 Whole-body type external-heating muffle type rotary kiln

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