CN112723734A - Electric melting furnace for producing continuous basalt fibers - Google Patents
Electric melting furnace for producing continuous basalt fibers Download PDFInfo
- Publication number
- CN112723734A CN112723734A CN202110068680.0A CN202110068680A CN112723734A CN 112723734 A CN112723734 A CN 112723734A CN 202110068680 A CN202110068680 A CN 202110068680A CN 112723734 A CN112723734 A CN 112723734A
- Authority
- CN
- China
- Prior art keywords
- brick
- melting tank
- melting
- furnace
- blocking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002844 melting Methods 0.000 title claims abstract description 127
- 230000008018 melting Effects 0.000 title claims abstract description 127
- 229920002748 Basalt fiber Polymers 0.000 title claims abstract description 25
- 239000011449 brick Substances 0.000 claims abstract description 117
- 230000000903 blocking effect Effects 0.000 claims abstract description 79
- 239000000463 material Substances 0.000 claims abstract description 45
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 239000008207 working material Substances 0.000 claims abstract description 6
- 239000000155 melt Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 239000000835 fiber Substances 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 abstract description 5
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910052863 mullite Inorganic materials 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000005491 wire drawing Methods 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000003779 heat-resistant material Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000629 Rh alloy Inorganic materials 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/02—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating
- C03B5/027—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in electric furnaces, e.g. by dielectric heating by passing an electric current between electrodes immersed in the glass bath, i.e. by direct resistance heating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/20—Bridges, shoes, throats, or other devices for withholding dirt, foam, or batch
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/24—Automatically regulating the melting process
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/26—Outlets, e.g. drains, siphons; Overflows, e.g. for supplying the float tank, tweels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention discloses an electric melting furnace for producing continuous basalt fibers, which comprises a furnace body and an electric melting control device, wherein a melting tank, a material channel, a working material channel and a working chamber are sequentially arranged in the furnace body, a feeding part is arranged above the melting tank, and a blocking brick is arranged between the melting tank and the material channel; the blocking brick is provided with a central part for accommodating the cooling device and a peripheral structure for wrapping the central part; the top of the blocking brick is fixed on the inner wall of the top of the melting tank, and the bottom of the blocking brick and the bottom of the melting tank are provided with preset heights for conducting the solution. Through above-mentioned structure, this application improves the throat and the electrode structure among the prior art, and the addition of baffle structure makes the melting tank stove bottom to the distance of material way be short 4/5 than the throat shrinkage structure. The electrode arrangement of unilateral makes the heating more even, and both improvements have all reduced thermal loss, consequently, not only greatly reduced the construction cost of electric melting kiln stove, still reduced the loss of energy consumption, improved the production efficiency of producing continuous fibers.
Description
Technical Field
The invention relates to the technical field of production equipment of basalt fibers, in particular to an electric melting furnace for producing continuous basalt fibers.
Background
The basalt fiber is a continuous fiber drawn from natural basalt, and is a continuous fiber drawn from basalt stone at high speed through a platinum-rhodium alloy wire drawing bushing after being melted at 1450-1500 ℃. The basalt fiber is a novel inorganic environment-friendly green high-performance fiber material and is composed of oxides such as silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, ferric oxide, titanium dioxide and the like. The basalt continuous fiber has high strength, and also has various excellent performances of electrical insulation, corrosion resistance, high temperature resistance and the like. In addition, the production process of the basalt fiber determines that the produced waste is less, the environmental pollution is less, and the product can be directly degraded in the environment after being discarded without any harm, so the basalt fiber is a real green and environment-friendly material. Basalt fibers are taken as one of four major fibers (carbon fibers, aramid fibers, ultra-high molecular weight polyethylene and basalt fibers) which are mainly developed in China, and industrial production is realized. The basalt continuous fiber has been widely applied in various aspects such as fiber reinforced composite materials, friction materials, shipbuilding materials, heat insulation materials, automobile industry, high-temperature filter fabrics, protection fields and the like.
The structure of the electric melting furnace for producing continuous basalt fibers can refer to Chinese invention patent with an authorization publication number of CN106396340B at present, and discloses the electric melting furnace for producing the continuous basalt fibers. The existing electric melting furnace is basically of the structure, and has the following defects: 1. generally, the double-side electrodes extend into the furnace wall to heat materials in the kiln, and the method easily causes the problem of uneven heating because the electrodes on the two sides need to be controlled respectively; 2. generally, the process step of drawing continuous fibers is carried out when materials are conveyed from the bottom of a melting tank to a working material channel and a long-distance throat is needed to reach the position of a bushing, and because the distance from the melting tank to the throat of the working material channel (wire drawing forming area) is long, the manufacturing cost and the electric energy loss cost of an electric melting furnace are increased, the preparation time for producing the continuous fibers is prolonged, and the production efficiency is reduced.
Disclosure of Invention
The following presents a simplified summary of embodiments of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that the following summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.
According to an aspect of the application, an electric melting furnace for producing continuous basalt fibers is provided, including furnace body and electric melting controlling means, melting tank, material way, work material way and studio set gradually in the furnace body, the top of melting tank is equipped with feeding portion, set up between melting tank and the material way and keep off the brick, keep off the brick and have the central part that is used for holding cooling device and the peripheral structure of parcel central part, the top that keeps off the brick is fixed in the top inner wall of melting tank, the bottom that keeps off the brick and the bottom of melting tank have the height of predetermineeing that is used for switching on the melt. The blocking brick is used for separating the melting tank and the material channel, and a liquid flowing hole with a certain height and width is formed between the lower part of the blocking brick and the bottom of the melting tank and used for conducting the melted melt to flow into the material channel. The flow holes formed at the lower part of the blocking bricks are used for separating the melted melt from the non-melted melt and have the function of conduction. The baffle bricks can separate the melted melt from the unmelted melt because the melted melt is immersed in the bottom of the melting tank. The throat is an important structure of the kiln and is a vulnerable structure, the service life of the kiln is determined to a great extent, a longer throat structure is adopted in the prior art, the blocking brick is innovatively adopted to replace the original throat and the ascending channel, the structure is simplified, the length of the throat can be reduced to be half or less than the original length, the construction cost and the required energy consumption are reduced, and the production efficiency is greatly improved.
Wherein, the blocking brick is a rectangular structure with a consistent cross section.
The height H of the blocking brick and the length L and the width W of the cross section are set according to the flow Q of the melt in the throat, and further, the preset height H formed by the bottom of the blocking brick and the bottom of the melting tank is Q/(V multiplied by W multiplied by rho), wherein Q represents the flow of the melt flowing through the throat in 1 hour (or other specific time periods), and is measured in kilograms per hour (kg/H), V is the average flow speed of the melt flowing through the throat and is measured in millimeters per hour (mm/H), W is the width of the cross section of the blocking brick, and is measured in millimeters (mm), and rho is the melt density and is measured in kilograms per mm3. According to practical experiments, the flow Q of the melt in the throat is designed to be (0.5T/D M)2)×S～(1.5T/D*M2) The optimum production effect can be achieved within the interval of xS, wherein S is the area of the melting tank; t is ton, D is day, M is rice.
Further, a second blocking brick is arranged between the blocking brick and the material channel, the second blocking brick and the blocking brick are arranged in parallel, the second blocking brick is provided with a second central part for accommodating a second cooling device and a second peripheral structure wrapping the second central part, the top of the second blocking brick is fixed on the inner wall of the top of the melting tank, the bottom of the second blocking brick and the bottom of the melting tank are provided with a second preset height for conducting the melt, the second preset height is smaller than a preset height (the preset height is a preset height h formed by the bottom of the blocking brick and the bottom of the melting tank), the distance between the blocking brick and the second blocking brick is smaller than the length L of the cross section of the blocking brick, preferably smaller than the width W of the cross section of the blocking brick, through the structure, the flow rate of the melted melt can be changed, and a certain part of the melted melt can rotate when passing through a flow tunnel under the blocking brick and contacting the second blocking brick, and then the flow velocity of the melt in the throat is slightly reduced, so that the retention time of the unmelted melt in the melting tank can be prolonged, the completely melted melt can be further ensured to enter the throat without being blocked, and the unmelted melt can be ensured to have sufficient melting time.
In addition, in order to avoid the corrosion of the peripheral structure of the blocking brick which is soaked in the melting tank for a long time, the blocking brick is provided with a cooling device, and the cooling device is a tubular cooler, a plate cooler or an air-cooled cooler which takes water or air as a coolant, for example, the cooling device can be simply realized by adopting a cooling water tank, and also can be realized by adopting other cooling devices.
The melting furnace is characterized in that an electrode assembly and a thermocouple assembly which are electrically connected with an electric melting control device are arranged in the melting tank, the electrode assembly and the thermocouple assembly are electrically connected with each other, the electrode assembly comprises a plurality of unilateral electrodes, the thermocouple assembly comprises a plurality of thermocouples, and the electrode assembly and the thermocouple assembly are fixed in the furnace body. Thermocouple subassembly is pre-buried in the melting tank pool wall, and it has 2 or more generally, can set up respectively at different heights for gather the temperature information of different positions in the furnace body. The method aims to overcome the defects that in the prior art, the temperature control of the electrodes on the two sides of the kiln is inaccurate, so that the electric energy loss in the heating and production processes of the kiln is large, the waste is caused, and the production efficiency is low. In this application, unilateral electrode is the electrode that the unilateral set up, adjusts it through electric smelting controlling means (for example silicon controlled rectifier temperature control device), makes the temperature of melting tank stabilize in required scope, makes the raw materials can fully melt, the smooth trickling of fused raw materials, can satisfy the needs of production to reach the purpose of practicing thrift the power consumption.
Preferably, the single-side electrode comprises a pair of identical electrodes (two electrodes forming a loop), the length of the single-side electrode is preferably 400mm-1000mm, the length of the single-side electrode can be set according to actual conditions, the single-side electrode is too large and easy to bend and increases the cost, and the electrode needs to be replaced frequently when the length of the single-side electrode is too small. The distance between the two electrodes of the single-sided electrode is preferably 600mm to 2000 mm.
Preferably, the distance from the furnace wall to one end of the single-sided electrode extending into the melting tank is preferably in the range of 0mm to 500 mm.
Preferably, the single-side electrode is arranged in a plurality of layers, for example, 2 to 6 layers of single-side electrodes can be arranged, and the distance between the single-side electrodes of adjacent layers is 100mm to 300 mm.
The electric melting control device comprises a temperature control unit and a transformer which are electrically connected with each other, the temperature control unit is connected with a thermocouple assembly, the transformer is connected with an electrode assembly, the power of an electrode is adjusted by controlling the transformer through the temperature control unit, the electrode is heated to a preset temperature, and basalt is melted into high-temperature liquid.
Through above-mentioned structure, the throat and the electrode structure among the prior art improve in this application, the joining of baffle structure makes melting tank stove bottom to the throat distance of material way shorten 4/5, the electrode of unilateral makes the heating more even, and the improvement between them has all reduced thermal loss, consequently, not only greatly reduced the construction cost of electric melting kiln stove, still reduced the loss of energy consumption, improved the production efficiency of producing continuous fibers.
Drawings
The invention may be better understood by referring to the following description in conjunction with the accompanying drawings, in which like reference numerals are used throughout the figures to indicate like or similar parts. The accompanying drawings, which are incorporated in and form a part of this specification, illustrate preferred embodiments of the present invention and, together with the detailed description, serve to further explain the principles and advantages of the invention. On the attachment
In the figure:
fig. 1 is a top view of an electric melting furnace of embodiment 1 of the present invention;
FIG. 2 is a sectional view of an electric melting furnace according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of a blocking brick of the electric melting furnace of embodiment 1 of the present invention;
FIG. 4 is a schematic view of an electric melting furnace employing a throat of the prior art;
FIG. 5 is a top view of an electric melting furnace in example 2 of the present invention;
fig. 6 is a sectional view of an electric melting furnace according to embodiment 2 of the present invention.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings. Elements and features depicted in one drawing or one embodiment of the invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that the figures and description omit representation and description of components and processes that are not relevant to the present invention and that are known to those of ordinary skill in the art for the sake of clarity.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed or removable connections or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1 and 2, an electric melting furnace for producing continuous basalt fibers according to an embodiment of the present invention includes a furnace body 100 and an electric melting control device 200, wherein a melting tank 101, a material channel 102, a working material channel 103, and a working chamber 104 are sequentially disposed in the furnace body 100, a charging portion is disposed above the melting tank 101, a charging opening 105 is disposed at the top of the furnace body 100, and the charging portion includes a charging device for charging a material into the charging opening 105. A blocking brick 300 is arranged between the melting tank 101 and the material channel 102. The working chamber 104 has a plurality of forming areas, each forming area is provided with a bushing 107, the forming areas are separately separated, and the working chamber 104 is at least provided with more than 2 forming areas.
Referring to fig. 3, the blocking brick 300 has a central portion 301 for receiving a cooling device and a peripheral structure 302 wrapping the central portion 301, the top of the blocking brick 300 is fixed to the inner wall of the top of the melting tank 101, and the bottom of the blocking brick 300 and the bottom of the melting tank 101 have a predetermined height for conducting a melt. The blocking brick 300 is used for dividing the melting tank 101 and the material channel 102, and a liquid flow hole with a certain height and width is formed between the lower part of the blocking brick 300 and the bottom of the melting tank 101 and is used for conducting the melted melt to flow into the material channel 102. The flow holes formed at the lower part of the blocking bricks are used for separating the melted melt from the non-melted melt and have the function of conduction. The baffle bricks can separate the melted melt from the unmelted melt because the melted melt is immersed in the bottom of the melting tank. The throat is an important structure of the kiln and is a vulnerable structure, the service life of the kiln is determined to a great extent, a longer throat structure (see fig. 4, and reference number 400 in the drawing is the throat) is adopted in the prior art, and the blocking brick 300 (see fig. 3) is innovatively adopted to replace the original throat and the ascending channel, so that the structure is simplified, the length of the throat can be reduced to be half or less than the original length, the construction cost and the required energy consumption are reduced, and the production efficiency is greatly improved.
The height H of the blocking brick (or the preset height H formed by the bottom of the blocking brick and the bottom of the melting tank) and the length L and the width W of the cross section are set according to the flow Q (mass flow) of the melt of the throat, and further, the preset height H formed by the bottom of the blocking brick and the bottom of the melting tank is Q/(V multiplied by W multiplied by rho), wherein Q represents the flow of the melt flowing through the throat within 1 hour (or other specific time period), and is measured in kilograms per hour (kg/H), V is the flow speed of the melt flowing through the throat, and is measured in millimeters per hour (mm/H), W is the width of the cross section of the blocking brick, and is measured in millimeters (mm), rho is the density of the melt, and is measured in kilograms per mm3. The above calculation is according to the formula: q ═ V × W × h × ρ (mass flow Q ═ flow velocity V × preset height h × cross-sectional width W × melt density ρ). At the moment, the height H of the blocking brick is the depth of the melting tank minus the preset height H, and the height H, the preset height H and the length L of the cross section of the blocking brick are all in millimeters. In the above calculation, the blocking brick is a columnar structure with a consistent cross section, and may be a regular or irregular prism or cylindrical structure, so that the width of the cross section of the blocking brick is the width of the bottom of the blocking brick.
Generally, in the above calculation, the melting capacity of the melting furnace is designed to be 1 to 3 tons per square meter per day. Preferably, the flow rate Q of the melt in the throat is preferably designed to be (0.5 kg/h-1.5 kg/h) × S, the width W of the cross section is preferably in the range of 150-.
The cooling device of the blocking brick 300 can be used for preventing the peripheral structure 302 of the blocking brick 300 from being corroded in the melting tank 101 for a long time, and the cooling device is arranged in the blocking brick, so that the corrosion of furnace lining materials can be reduced, and the service life is prolonged. The cooling device is a shell and tube cooler, a plate cooler or an air-cooled cooler using water or air as a coolant, and for example, the cooling device can be simply realized by using a cooling water tank, and can also be realized by using other cooling devices.
As a specific example, cooling device includes circulating water pump and pipeline, the pipeline has filling opening and egress opening, circulating water pump's entry is connected with the filling opening of pipeline, the export of circulating water pump is connected with the egress opening of pipeline, the pipeline includes inlet tube and outlet pipe, the equal vertical setting of inlet tube and outlet pipe, the lower part that keeps off the brick structure is located to the filling opening of pipeline, the outlet pipe is connected to the egress opening of pipeline, the outlet pipe upwards extends the upper portion that keeps off the brick structure, advance water piping connection to the filling opening of pipeline, pour into low-temperature water by the filling opening, flow out by egress opening and outlet pipe behind the circulating water pump, thereby play the effect for keeping off the outer wall cooling. Generally, the temperature of the low-temperature water flowing from the injection port is lower than the room temperature, and the circulating water pump can control the temperature of the flowing water to be constantly kept at a certain temperature value between 35 ℃ and 50 ℃.
In order to further avoid corrosion of the peripheral structure of the baffle brick which is soaked in the melting tank for a long time, the cooling device is positioned at the geometric center of the cross section of the baffle brick on the cross section, the height of the cooling device is 50% -90% of the height of the baffle brick soaked in the liquid of the melting tank (generally, the highest height soaked in the liquid of the melting tank), and the actual height can be selected according to the cooling temperature and the cost.
The peripheral structure 302 of the blocking brick 300 is realized by using a furnace lining material (i.e. the inner wall material of the furnace body). The thickness range of the peripheral structure of the blocking brick is 50-100 mm. The blocking brick is provided with the cooling device and limits the thickness of the peripheral structure, so that the erosion of furnace lining materials can be reduced, and the service life is prolonged.
Referring to fig. 1 and 2, an electrode assembly and a thermocouple assembly electrically connected to an electric melting control device are disposed in the melting tank 101, the electrode assembly and the thermocouple assembly are electrically connected to each other, the electrode assembly includes a plurality of single-side electrodes, the thermocouple assembly includes a plurality of thermocouples, and the electrode assembly and the thermocouple assembly are fixed in the furnace body. Thermocouple subassembly is pre-buried in the melting tank pool wall, and it has 2 or more generally, can set up respectively at different heights for gather the temperature information of different positions in the furnace body. The method aims to overcome the defects that in the prior art, the temperature control of the electrodes on the two sides of the kiln is inaccurate, so that the electric energy loss in the heating and production processes of the kiln is large, the waste is caused, and the production efficiency is low. In the application, the unilateral electrode is the electrode that the unilateral set up, adjusts it through electric smelting controlling means (for example silicon controlled rectifier temperature control device), makes the temperature of melting tank stabilize in required scope, makes the raw materials can fully melt, the smooth trickling of fused raw materials, can satisfy the needs of production to reach the purpose of practicing thrift the power consumption. The unilateral electrode extends into the melting tank, and generates high temperature after being electrified so as to melt the basalt material inside. One single-sided electrode constitutes one heating unit, and generally, the number of energization of the heating unit may be set according to the set flow rate (daily) for melting the basalt material, for example, the storage amount of the basalt material/the flow rate of melting the basalt material ≧ 1, that is, the basalt material needs to be melted in the melting tank for at least 24 hours.
The length of the single-side electrode is preferably 400mm to 1000mm, and the length of the single-side electrode can be set according to actual conditions, and is too large, easy to bend and increase cost, and if the length of the single-side electrode is too small, the electrode needs to be replaced frequently. The distance between the two electrodes of the single-sided electrode is preferably 600mm to 2000 mm. All adopt two side electrodes among the prior art, two side electrodes include 4 electrodes, two electrodes of different polarity form a return circuit, the tiny interval has between two electrodes that form the return circuit, make its power line be the pitch arc, thereby lead to current density unstability, and then lead to the inhomogeneous of heating, the innovative electrode that sets up of this application is unilateral electrode, the adjacent electrode of unilateral electrode has big interval, and be parallel completely, consequently, have the completely horizontal power line, therefore current density is invariable, make the warm field that forms in the melting bath more even. In addition, the outside cover of electrode is equipped with cooling jacket (protective sheath), for example the cooling water protective sheath, and two side electrodes among the prior art have more electrodes, consequently consume more protective sheaths, and the cooling jacket has consumed the temperature in the melting tank, and this application has reduced the use amount of electrode through adopting unilateral electrode, has reduced the heat loss, has practiced thrift the input of electrode itself and the input of cooling jacket, has reduced the construction cost, greatly reduced the cost.
In addition, the electrode can be consumed and shortened in the long-term use process, and the two electrodes forming the loop of the two-side electrode are oppositely arranged, and the length of the two-side electrode is extended into the middle position of the melting tank, so that the electrode can be pushed into the melting tank only by experience under the condition of shortening the electrode, and the heating stability of the electrode is ensured. The single-side electrode can be directly pushed to the furnace wall and then retracted for a certain distance, so that the operation is very easy.
As a preferred embodiment, the end of the single-sided electrode extending into the melting tank is preferably located at a distance in the range of 0mm to 300mm from the furnace wall.
As a preferred embodiment, the single-sided electrode is arranged in a plurality of layers, for example, 2-6 layers of single-sided electrodes can be arranged, and the distance between the single-sided electrodes of adjacent layers is 100mm-300 mm.
The electric melting control device comprises a temperature control unit and a transformer which are electrically connected with each other, a thermocouple assembly of the temperature control unit is connected with the transformer, the transformer is connected with an electrode assembly, the power of an electrode is adjusted by controlling the transformer through the temperature control unit, the electrode is heated to a preset temperature, and basalt is melted into high-temperature liquid.
The furnace body 100 has a furnace top, a furnace wall, and a furnace bottom, which are all multilayer walls made of heat-resistant materials. Generally, the heat-resistant materials comprise chromium corundum bricks, mullite bricks, light mullite bricks, clay bricks and the like, and the furnace top, the furnace wall and the furnace bottom can be respectively realized by selecting two or more materials of the heat-resistant materials. In this example, the furnace wall includes an inner insulating brick (light mullite brick) and an outer clay brick. The furnace bottom comprises a chromium corundum brick, a mullite brick, a light mullite brick and a clay brick from inside to outside in sequence. The furnace roof comprises light mullite bricks and upper layer light bricks (foamed bricks). The furnace lining brick of the furnace body is made of a chromium corundum brick material.
Example 2
In this embodiment, referring to fig. 5 and 6, unlike embodiment 1, a second blocking brick 310 is further disposed between the blocking brick 300 (the first blocking brick) and the material channel 102, the second blocking brick 310 is disposed in parallel with the blocking brick 300, the second blocking brick 310 has the same structure as the blocking brick 300, and also has a second central portion for accommodating a second cooling device and a second peripheral structure for wrapping the second central portion, similarly, the top of the second blocking brick 310 is fixed to the inner wall of the top of the melting tank, the bottom of the second blocking brick 310 and the bottom of the melting tank have a second predetermined height for conducting the molten body, the second predetermined height is smaller than the predetermined height (the predetermined height is a predetermined height h formed by the bottom of the blocking brick above and the bottom of the melting tank), the distance between the blocking brick 300 and the second blocking brick 310 is smaller than the length L of the cross section of the blocking brick, preferably smaller than the width W of the cross section of the blocking brick, by the above structure, the flow rate of the melted melt can be changed, and a certain part of the melted melt can rotate when passing through the throat under the blocking brick and touching the second blocking brick 310, so that the flow rate of the melt in the throat is slightly reduced, the retention time of the unmelted melt in the melting tank can be prolonged, the completely melted melt can be further ensured to enter the throat without being blocked, and the unmelted melt can be ensured to have sufficient melting time.
Through the structure, the throat and the electrode structure in the prior art are improved, the throat distance from the bottom of the melting tank to a wire drawing forming area is shortened by half due to the addition of the baffle structure, the single-side electrode enables the heating to be more uniform, the thermal loss is reduced due to the improvement of the throat and the electrode structure, the construction cost of the electric melting furnace is greatly reduced, the loss of energy consumption is reduced, and the production efficiency of continuous fiber production is improved.
The back end of the melting zone formed by the melting tank is connected with the material conveying channel, a throat is arranged between the melting zone and the material conveying channel, and the blocking brick is arranged on the material conveying channel between the melting tank and the material conveying channel. The melting tank 101 is directly heated by adopting electrodes, the lower part of the melting tank is discharged to enhance heat transfer and improve the melting rate, and meanwhile, the electrodes are arranged by adopting single-side electrodes, so that the temperature of basalt melt can be accurately controlled, and the wire drawing operation is facilitated.
In actual use, the charging device charges basalt materials into the furnace body 100 through the charging opening 105, and the basalt materials sequentially pass through the melting tank 101 → the blocking brick 300 → the material channel 102 → the working material channel 103 → the working chamber 104 (the bushing zone); and electrifying the electrode assembly by the electric melting control device, controlling the transformer to change the power of the electrode assembly according to the temperature information in the furnace fed back by the thermocouple assembly, keeping the temperature in the kiln at 1400-1700 ℃, and fully melting the basalt material into uniform melt.
In the foregoing description of specific embodiments of the invention, features described and/or illustrated with respect to one embodiment may be used in the same or similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.
While the present invention has been disclosed above by the description of specific embodiments thereof, it should be understood that all of the embodiments and examples described above are illustrative and not restrictive. Various modifications, improvements and equivalents of the invention may be devised by those skilled in the art within the spirit and scope of the appended claims. Such modifications, improvements and equivalents are also intended to be included within the scope of the present invention.
Claims (10)
1. An electric melting kiln for producing continuous basalt fibers is characterized in that: the furnace comprises a furnace body and an electric melting control device, wherein a melting tank, a material channel, a working material channel and a working chamber are sequentially arranged in the furnace body, a feeding part is arranged above the melting tank, and a blocking brick is arranged between the melting tank and the material channel;
the blocking brick is provided with a central part for accommodating the cooling device and a peripheral structure for wrapping the central part;
the top of the blocking brick is fixed on the inner wall of the top of the melting tank, and the bottom of the blocking brick and the bottom of the melting tank are provided with a preset height for conducting a solution; the blocking brick is used for separating the melting tank and the material channel, and a liquid flow hole with a certain height and width is formed between the lower part of the blocking brick and the bottom of the melting tank and used for conducting the melted melt to flow into the material channel.
2. The electric melting furnace for producing continuous basalt fiber according to claim 1, characterized in that: the height H of the stopper and the length L and width W of the cross-section are set according to the flow rate Q of the melt of the throat.
3. The electric melting furnace for producing continuous basalt fibers according to claim 2, characterized in that: the blocking bricks are of rectangular structures with consistent cross sections.
4. The electric melting furnace for producing continuous basalt fiber according to claim 2 or 3, characterized in that: the preset height h formed by the bottom of the blocking brick and the bottom of the melting tank is Q/(V multiplied by W multiplied by rho), wherein Q represents the flow of the melt flowing through the throat within 1 hour, the unit is kg/h, V is the average flow velocity of the melt flowing through the throat, the unit is mm/h, W is the width of the cross section of the blocking brick, the unit is mm, and rho is the density of the meltIn units of kg/mm3The width W range of the cross section is 150-600 mm; the flow rate Q of the melt in the throat is designed to be (0.5T/D M)2)×S～(1.5T/D*M2) X S, wherein S is the area of the melting tank; t is ton, D is day, M is rice.
5. The electric melting furnace for producing continuous basalt fibers according to claim 2, characterized in that: keep off the brick and still set up the second between the material way and keep off the brick, the second keeps off the brick and set up side by side, the second keeps off the brick and has the second central part that is used for holding second cooling device and the second peripheral structure of parcel second central part, the top that the second kept off the brick is fixed in the top inner wall of melting tank, the bottom that the second kept off the brick and the bottom of melting tank have the second that is used for switching on the solution and predetermine the height, the second is predetermine the height and is less than and predetermines the height, keep off the brick and the second and keep off the interval between the brick and be less than the length L who keeps off the brick cross section.
6. The electric melting furnace for producing continuous basalt fiber according to claim 1, characterized in that: the cooling device is a shell and tube cooler, a plate cooler or an air-cooled cooler which takes water or air as a coolant.
7. The electric melting furnace for producing continuous basalt fibers according to claim 6, characterized in that: cooling device includes circulating water pump and pipeline, the pipeline has filling opening and egress opening, circulating water pump's entry is connected with the filling opening of pipeline, the export of circulating water pump is connected with the egress opening of pipeline, the pipeline includes inlet tube and outlet pipe, the equal vertical setting of inlet tube and outlet pipe, the lower part that keeps off the brick structure is located to the filling opening of pipeline, the outlet pipe is connected to the egress opening of pipeline, the outlet pipe upwards extends the upper portion that keeps off the brick structure, advance water piping connection to the filling opening of pipeline, pour into low-temperature water by the filling opening, flow out by egress opening and outlet pipe behind the.
8. The electric melting furnace for producing continuous basalt fiber according to claim 1, characterized in that: the melting tank is internally provided with an electrode assembly and a thermocouple assembly which are electrically connected with the electric melting control device, the electrode assembly and the thermocouple assembly are electrically connected with each other, the electrode assembly comprises a plurality of unilateral electrodes, the thermocouple assembly comprises a plurality of thermocouples, the electrode assembly is fixed in the furnace body, and the thermocouple assembly is pre-embedded in the wall of the melting tank or arranged in a specific space.
9. The electric melting furnace for producing continuous basalt fibers according to claim 8, characterized in that: the single-sided electrode comprises a pair of identical electrodes; the length range of the single-side electrode is 400mm-1000 mm; the distance between the two electrodes of the single-side electrode ranges from 600mm to 2000 mm.
10. The electric melting furnace for producing continuous basalt fiber according to claim 8 or 9, characterized in that: the distance between one end of the unilateral electrode which is deep into the melting tank and the furnace wall ranges from 0mm to 500 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068680.0A CN112723734A (en) | 2021-01-19 | 2021-01-19 | Electric melting furnace for producing continuous basalt fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110068680.0A CN112723734A (en) | 2021-01-19 | 2021-01-19 | Electric melting furnace for producing continuous basalt fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112723734A true CN112723734A (en) | 2021-04-30 |
Family
ID=75592406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110068680.0A Pending CN112723734A (en) | 2021-01-19 | 2021-01-19 | Electric melting furnace for producing continuous basalt fibers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112723734A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620565A (en) * | 2021-08-13 | 2021-11-09 | 甘肃旭康材料科技有限公司 | Kiln for melting neutral borosilicate glass raw material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201245542Y (en) * | 2008-05-13 | 2009-05-27 | 中国建筑材料科学研究总院 | Complete separation type glass melting furnace |
| CN201473433U (en) * | 2009-08-28 | 2010-05-19 | 东华大学 | Glass furnace with secondary fluid hole |
| CN102211849A (en) * | 2011-04-11 | 2011-10-12 | 安徽华强玻璃科技有限公司 | Material channel device of crystal glass kiln |
| JP2014005180A (en) * | 2012-06-26 | 2014-01-16 | Asahi Glass Co Ltd | Method of inserting electrode, method of manufacturing glass product, method of manufacturing glass melting tank, and glass melting tank |
| CN103951157A (en) * | 2014-04-02 | 2014-07-30 | 东南大学 | Tank furnace for mass production of continuous basalt fibers and heating method |
| CN207276480U (en) * | 2017-09-27 | 2018-04-27 | 成都光明光电股份有限公司 | All Electric Melting Furnace furnace apparatus |
-
2021
- 2021-01-19 CN CN202110068680.0A patent/CN112723734A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201245542Y (en) * | 2008-05-13 | 2009-05-27 | 中国建筑材料科学研究总院 | Complete separation type glass melting furnace |
| CN201473433U (en) * | 2009-08-28 | 2010-05-19 | 东华大学 | Glass furnace with secondary fluid hole |
| CN102211849A (en) * | 2011-04-11 | 2011-10-12 | 安徽华强玻璃科技有限公司 | Material channel device of crystal glass kiln |
| JP2014005180A (en) * | 2012-06-26 | 2014-01-16 | Asahi Glass Co Ltd | Method of inserting electrode, method of manufacturing glass product, method of manufacturing glass melting tank, and glass melting tank |
| CN103951157A (en) * | 2014-04-02 | 2014-07-30 | 东南大学 | Tank furnace for mass production of continuous basalt fibers and heating method |
| CN207276480U (en) * | 2017-09-27 | 2018-04-27 | 成都光明光电股份有限公司 | All Electric Melting Furnace furnace apparatus |
Non-Patent Citations (3)
| Title |
|---|
| 作花济夫等: "《玻璃手册》", 30 April 1985 * |
| 方荣利: "《硅酸盐反应工程学》", 31 January 1998 * |
| 王伟等: "《玻璃生产工艺技术》", 31 December 2013, 武汉理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620565A (en) * | 2021-08-13 | 2021-11-09 | 甘肃旭康材料科技有限公司 | Kiln for melting neutral borosilicate glass raw material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1170108C (en) | Melting/retaining furnace for aluminium ingot | |
| CN103011580B (en) | A kind of high-strength glass fibre pool kiln wiredrawing method and device thereof | |
| EP2889274A1 (en) | Energy-efficient and environmentally-friendly method for producing glass, and glass melting furnace | |
| CN103951157A (en) | Tank furnace for mass production of continuous basalt fibers and heating method | |
| CN112723734A (en) | Electric melting furnace for producing continuous basalt fibers | |
| CN214735335U (en) | A keep off brick structure for basalt electric melting furnace | |
| CN105018740B (en) | Vacuum reduction furnace for electromagnetic induction heating melting reduction of magnesium metal | |
| CN214735391U (en) | Basalt electric melting furnace based on novel throat | |
| CN204918643U (en) | Melt branch stove | |
| CN214735330U (en) | Basalt fiber electric melting furnace based on unilateral electrode | |
| CN203768205U (en) | Tank furnace for continuous and mass production of basalt fibers | |
| CN216890650U (en) | Basalt electric melting furnace with raw material uniformity control function | |
| CN113336421B (en) | Glass kiln, method for discharging glass kiln and discharging system of glass kiln | |
| CN216890651U (en) | Basalt electric melting furnace for producing continuous basalt fibers | |
| CN113547092B (en) | Multi-element copper alloy upward furnace and casting method | |
| CN110981164B (en) | Melting apparatus and melting method | |
| CN104773944A (en) | Energy-saving eco-friendly glass melting method and long bent glass melting furnace | |
| CN2449169Y (en) | All electric melting combined kiln furnace | |
| CN104724905A (en) | Energy-saving environment-friendly glass wine bottle production method and glass wine bottle melting furnace | |
| KR20100108558A (en) | Device for shaping melts made of inorganic oxides or minerals having improved heating unit | |
| CN111271974A (en) | Movable carbon slag smelting furnace | |
| CN110922029A (en) | Kiln for mass production of continuous basalt fibers | |
| CN202543060U (en) | Device for controlling basalt melt by using jet pipe | |
| CN204848984U (en) | Electromagnetic induction heating melting reducing metal magnesium vacuum reduction stove | |
| CN113277706B (en) | Special multi-bushing tank furnace for producing pure basalt fibers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |