CN105627751B - A kind of metallurgical furnace - Google Patents

A kind of metallurgical furnace Download PDF

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Publication number
CN105627751B
CN105627751B CN201610155031.3A CN201610155031A CN105627751B CN 105627751 B CN105627751 B CN 105627751B CN 201610155031 A CN201610155031 A CN 201610155031A CN 105627751 B CN105627751 B CN 105627751B
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Prior art keywords
heat transfer
firing chamber
metal
brick
chamber
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CN201610155031.3A
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CN105627751A (en
Inventor
邓长友
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Hunan Longruihuaxing Energy Saving And Environmental Protection Technology Co ltd
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Guangzhou Huang Hao Electronic Technology Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00Furnaces of a kind not covered by any preceding group
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00Casings; Linings; Walls; Roofs
    • F27D1/04Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004Systems for reclaiming waste heat

Abstract

The invention discloses a kind of metallurgical furnaces, include combustion system, firing chamber, the charging chamber being connected to firing chamber, are vortexed well and automatic feeder;Wherein, the top of firing chamber be divided into include flame and hot fume combustion chamber;It is provided with heat transfer brick between the liquid level of high temperature fluent metal and firing chamber top point in firing chamber, with the heat absorption speed for improving metal;The hot transfer strength that the heat transfer that metallurgical furnace of the present invention will heat up the hot fume in indoor top half is heated metal to lower half portion is increased to twice up to decades of times, directly result in exhaust gas temperature reduce reduce thermal loss, metal heating rate quickening shorten fuel combustion time, can produce apparent energy-saving effect.

Description

A kind of metallurgical furnace
Technical field
The invention belongs to metallurgical technology fields, are related to a kind of energy-efficient metallurgical furnace.
Background technique
Metallurgy industry belongs to high energy consumption high pollution industry, as energy prices rise steadily, the consuming cost of fuel Proportion is higher and higher in processing cost, and with natural resources it is a large amount of consume, a large amount of carbon emission and serious Environmental pollution.In order to reduce the fuel consumption in metallurgical furnace production process, related research institutes and manufacturing enterprise are constantly explored newly Technology to reduce energy consumption, save the cost, while reducing the pollution to environment.
Currently, the new invention new technology of the efficient use aspects of the metallurgical furnace energy conservation and fuel of entire metallurgy industry is main Concentrate on two aspects: first is that realizing the full combustion of fuel by new technology;Second is that recovery waste heat as much as possible.
However, technology is highly developed at present in terms of the full combustion of above-mentioned fuel and recovery waste heat, and Through the degree of reaching capacity, it is difficult in terms of studied to improve the energy-efficient performance of smelting furnace.
It is therefore necessary to carry out developmental research, a kind of new have different from more than the fully combustion technology of fuel or recycling to provide The technical solution of thermal technology, so that heat utilization rate is improved, to reach more energy-efficient purpose.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide a kind of metallurgical furnace, to reinforce heat transfer in metallurgical process, Improve metal heat absorption.
To achieve the above object, the technical solution of the present invention is as follows:
A kind of metallurgical furnace, includes combustion system, firing chamber, the charging chamber being connected to firing chamber, is vortexed well and automatic Batch charger;Wherein, the top for stating firing chamber be divided into include flame and hot fume combustion chamber;In high-temperature liquid state gold in firing chamber It is provided with heat transfer brick between the liquid level of category and firing chamber top point, with the heat absorption speed for improving metal.
Further, the heat transfer brick is thermal radiation absorption than high heat conduction refractory material, is divided into three layers of upper, middle and lower, in Layer be it is solid, the aperture as labyrinth of intercommunication is densely covered with inside upper and lower level, lower layer also can be made fin.
Further, the aperture on upper layer is honeycomb or ant nest shape.
Further, the density of material of the heat transfer brick is less than the density of liquid metal, and material blackness is high, to improve heat transfer The ability of brick absorption radiant heat transfer.
Further, the heat transfer brick and liquid metal are in close contact, and lower layer immerses in liquid metal.
Further, a submersible type is provided between the charging chamber and automatic feeder to feed intake entrance, submersible type is thrown Material mouth top be higher than metal bath surface, when preventing from feeding intake in charging chamber hot gas spilling.
Further, the production method of the heat transfer brick is to be molded with a mold, and is sintered to finished product with pottery.
Compared to the prior art, the heat transfer that metallurgical furnace of the present invention will heat up the hot fume in indoor top half is given down The hot transfer strength that half part is heated metal is increased to twice so that up to decades of times, directly resulting in exhaust gas temperature reduces reduction heat Amount loss, the quickening of metal heating rate shorten fuel combustion time, can produce apparent energy-saving effect.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those skilled in the art, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the principle of the present invention schematic diagram.
Fig. 2 is the A-A diagrammatic cross-section of Fig. 1.
Specific embodiment
The embodiment of the invention provides a kind of energy-efficient metallurgical furnaces, are conducted heat by reinforcing in metallurgical process, with Improve metal heat absorption.
As an embodiment of the present invention, heat transfer brick is thermal radiation absorption than high heat conduction refractory material, is divided into upper, middle and lower layer, The aperture as labyrinth of intercommunication is densely covered with inside upper and lower level, the aperture on upper layer also can be made honeycomb or ant nest shape, under Layer can be made into fin, and middle layer is solid.In the embodiment of the present invention, upper layer is made into labyrinth-like aperture, and lower layer is made into fin; The original convective heat transfer area of convective heat transfer area ratio increases several times to hundreds times, due to convection current when hot fume passes through these apertures Heat output is directly proportional to flow area, thus enhances convective heat transfer speed.Secondly, aperture also improve convective heat-transfer coefficient and The absorptance of heat transfer layer.
As another embodiment of the present invention, the radiation absorption ratio for the brick that conducts heat, which is higher than, is heated metal (solid or liquid) 2-5 times, since object is directly proportional to the uptake of radiant heat energy and the absorptance of object itself, the brick that conducts heat is for firing chamber upper half Furnace wall refractory irradiated next heat absorption rate in part increases 2-5 times.It is demonstrated experimentally that as long as the absorptance of heat transfer brick is high Absorptance in metal surface can generate energy-saving effect.
As another embodiment of the present invention, heat transfer brick is high thermal conductivity materials, thermally conductive in the case where cost license The higher the better for rate, can rapidly pass to the thermal energy of absorption and be heated metal.In the embodiment of the present invention, the material of the heat transfer brick Material is based on silicon carbide.Certainly, the use of better Heat Conduction Material such as graphene is basic material, better effect can be obtained. It was verified that as long as heat transfer brick thermal conductivity of the invention, which is greater than 1w/mk, generates energy-saving effect, if material is led Heating rate, which is greater than 5w/mk, can produce fairly good effect, and in the embodiment of the present invention, the thermal conductivity of the heat transfer brick is 2w/mk- 8w/mk。
The heat transfer that top half fuel combustion generates hot fume in firing chamber of the present invention is heated gold to lower half portion The hot transfer strength belonged to is increased to twice so that up to decades of times, directly resulting in exhaust gas temperature reduces reduction thermal loss, metal liter Warm speed quickening shortens fuel combustion time, generates apparent energy-saving effect;Secondly, submersible type feeding port upper design at than It is slightly higher to set metal bath surface, prevents the spilling of hot gas in charging chamber;In addition, automatic feeder feeds intake when reducing door opened Between, while being used for the hot gas overflowed from submersible type feeding port on a small quantity to preheat solid metallic.
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below Embodiment be only a part of the embodiment of the present invention, and not all embodiments.Based on the embodiments of the present invention, this field Technical staff's every other embodiment obtained, shall fall within the protection scope of the present invention.
Description and claims of this specification and term " first " in above-mentioned attached drawing, " second " etc. are for distinguishing Similar object, without being used to describe a particular order or precedence order.It should be understood that the term used in this way is in appropriate feelings It can be interchanged under condition, this is only to describe the used differentiation in description to the object of same alike result in the embodiment of the present invention Mode.In addition, term " includes " and " having " and their any deformation, it is intended that cover it is non-exclusive include, so as to A series of process, method, system, product or equipment comprising units are not necessarily limited to those units, but may include unclear Other units that ground is listed or intrinsic for these process, methods, product or equipment.
It is described in detail separately below.
Specifically, as depicted in figs. 1 and 2, metallurgical furnace of the present invention includes that combustion system 5, firing chamber 6 and firing chamber 6 connect Logical charging chamber 9 is vortexed well 7 and automatic feeder 1;Wherein, it includes flame and hot fume that the top of firing chamber 6, which is divided into, Combustion chamber;The liquid level of 6 high temperature liquid metal 13 of firing chamber uses heat transfer brick 12 by high temperature fluent metal 13 and 6 top of firing chamber The high-temperature flue gas isolation divided;Contain oxygen in the high-temperature flue gas of part in firing chamber 6, by by high temperature fluent metal 13 and heating The high-temperature flue gas isolation of part on room 6, to prevent the oxidation (scaling loss) of metallic aluminium;It is arranged between charging chamber 9 and automatic feeder 1 There is a submersible type to feed intake entrance 2;Wherein 1A, 2A, 3A and 4A in Fig. 1 and Fig. 2 respectively represent metallurgical furnace heat flowing Illustrate direction.
Wherein, the heat transfer brick 12 is thermal radiation absorption than high heat conduction refractory material, is divided into three layers of upper, middle and lower, middle layer is It is solid, the aperture as labyrinth of intercommunication is densely covered with inside upper and lower level;In the embodiment of the present invention, lower layer also can be made wing Piece;The density of material of the heat transfer brick 12 is less than the density of liquid metal, and material blackness is high, improves heat transfer brick absorption radiation and passes The ability of heat;By taking aluminium as an example, the blackness in metallurgical furnace due to aluminium is very low, and thermal radiation absorption is than also very low (less than 0.2), the present invention Heat transfer can be improved 2-5 times.The aperture as labyrinth of densely covered intercommunication, increases hot fume inside heat transfer 12 upper layer of brick With the convective heat transfer speed of heat transfer brick, it can be improved several times to tens times.It integrates, the present invention can be by hot fume and liquid Heat transfer speed between aluminium improves several times, accelerates the heating rate of metal, shortens smelting time, saves the energy and disappear Consumption.The heat transfer brick 12 is to be in close contact with liquid metal, according to the heat output calculation formula of heat transfer it is found that heat transfer brick 12 Heat output between liquid metal will tend to be infinitely great.So several times even hundreds times of heat that brick 12 absorbs of conducting heat in the present invention Amount, can be conducted to high temperature fluent metal 13 quickly completely.
The feed intake top of entrance 2 of the submersible type is slightly above liquid aluminum design height;The submersible type feeds intake entrance 2 Bottom plane and the angle in the direction that feeds intake are θ, wherein tan θ < f is quiet, and tan θ is dynamic greater than close to f.Wherein, f it is dynamic, quiet point of f Not Wei solid metallic 16 and bottom plane dynamic friction coefficient and confficient of static friction.The folder is arranged such in the embodiment of the present invention Angle, with ensure that solid metallic 16 slide enter liquid metal 14 in when, speed will not it is too fast and cause liquid metal 14 fly It splashes, destroys the oxide layer on 14 surface of liquid metal in charging chamber 9, prevent new metal oxidation.Solid metallic 16 melted Journey all slips into liquid metal, will not generate oxidization burning loss.
In use, putting into enough solid metallics to firing chamber 6 from the second fire door 4 first when blow-on;Start combustion system 5 To the METAL HEATING PROCESS in firing chamber 6 and it is warming up to the high temperature of setting, at this moment there are liquid in firing chamber 6, vortex well 7, charging chamber 9 State metal;Forming oxide film protection metal in charging chamber 9 on liquid metal face will not reoxidize;Then it is put into from the second fire door 4 The liquid metal that heat transfer brick will heat up room 6 all covers, and the oxygen-containing hot gas that at this moment combustion system 5 is sent into is strengthened by heat transfer brick 12 Heat transfer (2 times or more when heat transfer rate is without heat transfer brick covering is to decades of times) to the liquid metal 13 in firing chamber 6 quickly Heating, the liquid metal that the brick 12 that hereafter conducts heat is in close contact in covering firing chamber 6, not will cause metal oxygen (scaling loss);Starting Mixing pump 8, liquid metal are circulated from firing chamber 6 → 7 → charging chamber of vortex well, 9 → firing chamber 6;Start automatic feeder 1, It no longer feeds intake from the second fire door 4, at this moment conveyer belt 1-2 send the solid metallic 16 in hopper 1-1 according to the slower speed of setting To the entrance of submersible type feeding port 2, the gradient θ due to 2 bottom plane of submersible type feeding port along the direction that feeds intake meets: 1), tan θ < F is quiet, 2), tan θ is greater than dynamic close to f, solid metallic 16, which will be slow, to be slid into the liquid metal 14 of charging chamber 9;Solid metallic 16 absorb the heat melts of liquid metal 14, and fusion process does not have touch opportunity with oxygen, avoid metal oxidation (scaling loss); The inflow of liquid metal 14 firing chamber 6 after solid metallic 16 melts is warmed;So circulation completes metal smelt.
The present invention is energy saving in terms of following three: 1) heat that top half fuel combustion generates hot fume in firing chamber passes It passs lower half portion and is heated the hot transfer strength of metal and be increased to twice up to decades of times, to directly result in exhaust gas temperature reduction Reduction thermal loss, the quickening of metal heating rate shorten fuel combustion time, generate apparent energy-saving effect;2) submersible type is thrown Material mouth upper design at than setting metal bath surface it is slightly higher, prevent the spilling of hot gas in charging chamber;3) automatic feeder feeds intake reduction The door opened time, while the hot gas overflowed from submersible type feeding port on a small quantity is used to preheat solid metallic 16.
The production method of heat transfer brick 12 can first carry out mold, be molded with a mold, then be sintered to finished product with pottery.
The present invention can be used for all non-ferrous metal aluminium, magnesium, potassium, sodium, calcium, strontium, barium, copper, lead, zinc, tin, cobalt, nickel, antimony, mercury, Cadmium, bismuth, gold, silver, platinum, ruthenium, rhodium, palladium, osmium, iridium, beryllium, lithium, rubidium, caesium, titanium, zirconium, hafnium, vanadium, niobium, tantalum, tungsten, molybdenum, gallium, indium, thallium, Germanium, rhenium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium, silicon, boron, selenium, tellurium, arsenic, thorium.
In conclusion the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although referring to upper Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to upper Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features;And these It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.

Claims (5)

1. a kind of metallurgical furnace includes combustion system, firing chamber, the charging chamber being connected to firing chamber, is vortexed well and automatic throwing Material machine;It is characterized by: the top of the firing chamber be divided into include flame and hot fume combustion chamber;In high temperature in firing chamber It is provided with heat transfer brick between the liquid level of liquid metal and firing chamber top point, with the heat absorption speed for improving metal;The biography The density of material of hot brick is less than the density of liquid metal, and material blackness is high, to improve the ability that heat transfer brick absorbs radiant heat transfer.
2. metallurgical furnace as described in claim 1, it is characterised in that: the heat transfer brick is thermal radiation absorption than high thermally conductive fire resisting Material, is divided into upper, middle and lower triple layer designs, middle layer be it is solid, the aperture as labyrinth of intercommunication is densely covered with inside upper and lower level, under Layer also can be made fin.
3. metallurgical furnace as described in claim 1, it is characterised in that: the heat transfer brick and liquid metal are in close contact, lower layer It immerses in liquid metal.
4. metallurgical furnace as described in claim 1, it is characterised in that: be provided with one between the charging chamber and automatic feeder Submersible type feeds intake entrance, and submersible type feeding port top is higher than metal bath surface, when preventing from feeding intake in charging chamber hot gas spilling.
5. metallurgical furnace as described in claim 1, it is characterised in that: the production method of the heat transfer brick is to be molded with a mold, and is used Pottery is sintered to finished product.
CN201610155031.3A 2016-03-18 2016-03-18 A kind of metallurgical furnace Active CN105627751B (en)

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Publication number Priority date Publication date Assignee Title
CN110360841A (en) * 2019-08-15 2019-10-22 吴书平 A kind of energy conservation Hearth Furnace melting furnace
CN113137867A (en) * 2021-05-21 2021-07-20 宁波卓锋汽车科技有限公司 Aluminum alloy smelting pot waste heat recovery device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1698997A (en) * 2004-05-18 2005-11-23 深圳派瑞科冶金材料有限公司 Liquid metal container bottom heating device and application thereof
KR20060021018A (en) * 2004-09-02 2006-03-07 주식회사 포스코 Combustion waste gas heat recovery system in reheating furnace
CN203837478U (en) * 2014-05-26 2014-09-17 苏州卡迪亚铝业有限公司 Smelting furnace for producing aluminum or aluminum alloy
CN105222591A (en) * 2015-10-28 2016-01-06 深圳市龙瑞泰兴能源环境科技有限公司 Environmental protection metallurgical furnace and using method thereof
CN205593376U (en) * 2016-03-18 2016-09-21 深圳市龙瑞泰兴能源环境科技有限公司 Metallurgical furnace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1698997A (en) * 2004-05-18 2005-11-23 深圳派瑞科冶金材料有限公司 Liquid metal container bottom heating device and application thereof
KR20060021018A (en) * 2004-09-02 2006-03-07 주식회사 포스코 Combustion waste gas heat recovery system in reheating furnace
CN203837478U (en) * 2014-05-26 2014-09-17 苏州卡迪亚铝业有限公司 Smelting furnace for producing aluminum or aluminum alloy
CN105222591A (en) * 2015-10-28 2016-01-06 深圳市龙瑞泰兴能源环境科技有限公司 Environmental protection metallurgical furnace and using method thereof
CN205593376U (en) * 2016-03-18 2016-09-21 深圳市龙瑞泰兴能源环境科技有限公司 Metallurgical furnace

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