CN102757178A - Method for manufacturing micro-hollow and micro-bubble rock wool by using basalt as a main ingredient and product of the method - Google Patents
Method for manufacturing micro-hollow and micro-bubble rock wool by using basalt as a main ingredient and product of the method Download PDFInfo
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- CN102757178A CN102757178A CN2012102301536A CN201210230153A CN102757178A CN 102757178 A CN102757178 A CN 102757178A CN 2012102301536 A CN2012102301536 A CN 2012102301536A CN 201210230153 A CN201210230153 A CN 201210230153A CN 102757178 A CN102757178 A CN 102757178A
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Abstract
The invention relates to a method for manufacturing a micro-hollow and micro-bubble rock wool by using basalt as a main ingredient and a product of the method. The method comprises the following steps of: 1, firing; 2, preparation of materials: pulverizing basalt, dolomite or limestone (which serves as a fluxing agent) to be a lump material with the diameter being 3-10CM, pulverizing fluorite and silica (which serve as regulators) to be a lump material with the diameter being 0.5-2CM, processing combustion-supporting carbon to be a lump material with the grain diameter being 5-15Cm, and preparing the materials according to the weight proportion of 60-85 percent of basalt, 10-28 percent of dolomite or 10-28 percent of limestone, 5-15 percent of fluorite and 0-10 percent of silica and according to the volume ratio that aggregated rocks to combustion-supporting carbon is 4.5-6 to 3-4; 3, charging: charging the prepared combustion-supporting carbon and the prepared aggregated rocks in sequence into a smelting furnace according to a laminated circular charging way until the furnace is filled up; 4, smelting: smelting the basalt, the regulator and the aggregated rocks serving as combustion-supporting agents to form smelted streams; and 5, fiber-making: performing high speed centrifugation on the smelted streams, continuously air-blowing the smelted streams at high pressure and cooling to prepare a rock wool fiber having a micro-hollow and micro-bubble structure. By the method, the defect of technology prejudice is overcome, the method is simple in process and low in cost, and the product has high quality.
Description
Technical field
The present invention relates to the product of making method and this method thereof of a kind of rock wool, particularly a kind of is that major ingredient is made the microvoid heart, the method for microbubble rock wool and the product of this method thereof with Irish touchstone.
Background technology
The ore deposit rock wool of prior art is made and typically uses the remaining iron ore slag of ironmaking for as main raw material, adds a spot of lime stone, Irish touchstone as regulator, adopts through the cupola furnace high-temperature fusion; Be blow molded into fibre and process rock wool; Wherein, because material cause, the content of silicon-dioxide is not high relatively in the rock wool of processing; There are fiber weak point, poor toughness, heavy, the quality defect that heat-insulating and fire-proof, erosion resistance are not good.Although it is extensive to be rich in the stone material starting material of silicon-dioxide; Silicon-dioxide has the characteristics of stable performance, but owing to be rich in the rock fusing point height of silicon-dioxide, for many years; Those skilled in the art generally believe: in rock wool is made; The stone material material that is rich in silicon-dioxide is used for making rock wool technology as additive usually because its fusing point is higher, needs higher furnace temperature owing to will be rich in the stone material fusion of silicon-dioxide; Tooling cost is high relatively, is difficult to use a high proportion of lithotome that is rich in silicon-dioxide that contains to make rock wool as major ingredient usually.
In order to adapt to the demand of modern technologies development; Need to seek the making rock wool method that a kind of technology is simple, production efficiency is high, energy consumption is lower, cost is low; Have to produce that fiber is long, toughness is good, the rock wool of in light weight, high flame retardant, low heat conduction, characteristic such as corrosion-resistant; As high-quality insulation, heat insulation, erosion resistant, to satisfy the demand of various fields such as building, industry manufacturing, aerospace for high performance insulation, lagging material.
Summary of the invention
One of the object of the invention; It is the defective that overcomes the above-mentioned rock wool production technique of prior art; Provide the use that a kind of technology is simple, production efficiency is high, cost is low a high proportion of method that contains the lithotome making rock wool of being rich in silicon-dioxide; Providing a kind of more specifically is major ingredient with Irish touchstone, is fusing assistant, is the method for the regulator making microvoid heart, microbubble rock wool with auxiliary material fluorite, silica with auxiliary material rhombspar or Wingdale.
Another object of the present invention is said product defective that overcomes existing rock wool product, and a kind of have the microvoid heart, microbubble fibrous texture are provided, possess fiber length, good toughness, in light weight, heat-insulating and fire-proof is effective, corrosion resistant high-quality rock wool product.
In order to realize first purpose of the present invention, first aspect, it is the method that major ingredient is made the microvoid heart, microbubble rock wool with Irish touchstone that the present invention provides a kind of; The step of said method is following: step 1: on fire, in smelting furnace, put into material on fire, and put 1/2nd blowing-in burden(ing) coke; Blowing-out after wind 4-10 minute is given in igniting, adds all the other blowing-in burden(ing) coke of 1/2nd and tamp, continues to blowing-out after wind 5-10 minute; When coke is lighted fully, continue to give wind again; Step 2: get the raw materials ready; At first the building stones of selecting for use, combustion-supporting charcoal are carried out grinding and processing; Major ingredient Irish touchstone, auxiliary material fluxing agent rhombspar or Wingdale building stones are pulverized the piece material that is processed as diameter 3-10CM, the auxiliary material regulator fluorite of selecting for use and silica building stones pulverize separately are processed as the piece material of diameter 0.5-2CM, combustion-supporting charcoal is processed into the piece material of particle diameter 5-15CM; According to part by weight: major ingredient Irish touchstone 60-85%; Fusing assistant rhombspar 10-28% or Wingdale 10-28%, the ratio of regulator fluorite 5-15% and silica 0-10% is equipped with building stones, and building stones that said outfit is good and combustion-supporting charcoal are according to volume ratio building stones 4.5-6: the ratio of combustion-supporting carbon 3-4 is got the raw materials ready respectively; Step 3: charging; Laminated circulation charging method to expect behind the first charcoal is feeded; Building stones of getting ready and combustion-supporting charcoal are adorned the combustion-supporting charcoal of one deck according to elder generation; The different building stones of successively packing into are respectively then formed one group of circulation lamination, successively raw material are packed in the stove, feed until filling smelting furnace with the circulation stacked system; Step 4: found, in stove, give wind, heated 25-40 minute; Temperature is heated to 1350-1750 ℃ in the stove; Circulation lamination building stones in the stove are melted from the bottom to top, and the major ingredient Irish touchstone in the said lamination, auxiliary material regulator building stones form melt parcel fusing assistant prior to the fusing of fusing assistant building stones, melt continue the back fusing assistant; Formation is by the melt-flow thigh of the melt parcel fusing assistant melt of Irish touchstone, regulator, and said melt-flow thigh flows out from the chute mouth with 1350-1700 ℃ surface temperature; Step 5: system is fine; The melt-flow thigh is inducted on the running roller of supercentrifuge; Behind the said melt-flow stock-traders' know-how whizzer rod wheel high speed centrifugation; Be centrifuged into very thin shape melt, give uninterrupted high-pressure blast blowing cooling simultaneously, said very thin shape melt moment is blown to have the microvoid heart, the rock wool fibers of microbubble structure.
In order to realize second purpose of the present invention; Second aspect of the present invention; A kind of microvoid heart, microbubble rock wool product that utilizes method of the present invention preparation is provided, and said rock wool is by with part by weight Irish touchstone 60-85%, auxiliary material fluxing agent rhombspar 10-28% or Wingdale 10-28%; The lithotome of auxiliary material regulator fluorite 5-15% and silica 0-10% forms for the starting material processing and preparing, and said rock wool fibers has the structure of the microvoid heart, microbubble.
Further, the moity of said rock wool is: SiO
2Per-cent be 40-45%, Al
2O
3Per-cent be 10-15%, the per-cent of CaO is 20-25%, the per-cent of MgO is 8-11%, all the other are micro substance Fe
2O
3, FeO, TiO
2, K
2O, Na
2O and impurity; It is 30-50CM that the said microvoid heart, microbubble rock wool have staple length, and Fibre diameter is 4-7 μ, and proportion is 30-60kg/m
3, thermal conductivity≤0.035w/mk that said fiber has, maximum operation (service) temperature is 700 ℃, the acidity quotient that has is 1.2-2.6.
Irish touchstone is because dioxide-containing silica is high; Greatly about more than 40%; But its fused temperature is wanted high with respect to the iron ore slag, in this area, it has been generally acknowledged that and can not use a high proportion of Irish touchstone as the major ingredient of making rock wool, the present invention has overcome prior art personnel's technological prejudice; The Irish touchstone that silicon-dioxide is rich in employing is major ingredient; And be equipped with the suitable rhombspar that plays the fusing assistant effect or Wingdale, the silica and the fluorite that play modulator effect be auxiliary material, employing process method of the present invention in light a fire, get the raw materials ready, feed, found, make fine each process step, prepare have the microvoid heart, the rock wool fibers of microbubble structure; Technology of the present invention is simple; Save energy, that produces is rich in high-quality rock wool fibers silicon-dioxide, that have the microvoid heart, microbubble structure, has good product quality, cost is low, output is high advantage.
The rock wool product that uses method of the present invention to produce, owing to being major ingredient with Irish touchstone, its dioxide-containing silica is high; Particularly the inventive method is to raw-material ratio and the laminated circulation charging method of getting the raw materials ready; What starting material experienced in smelting furnace is the process of fusing-fusion-congruent melting, and effusive melt-flow thigh is the outer melt-flow thigh of melt that the melt of major ingredient Irish touchstone, regulator composition is wrapped in fusing assistant rhombspar or Wingdale, because of fused material chemical component, fusing point difference; Its melt-flow thigh internal and external temperature is different; Said melt-flow thigh is thrown away by high speed centrifugation becomes molten mass fiber thread, when discharging heat energy, under the blowing of high pressure cooling air; Meet the cold cooling of shrinking rapidly, in fiber, form the microvoid heart, microbubble structure.The microvoid heart that method of the present invention is processed, microbubble rock wool fibers have light weight, good toughness, heat insulation, the corrosion resistant fine quality of excellent insulating.
Description of drawings
Accompanying drawing 1 is to adopt the photo figure of the rock wool fibers with the microvoid heart, microbubble structure of method making of the present invention at microscopically.
Embodiment
Embodiment one
First embodiment of the present invention is about being the method that major ingredient is made the microvoid heart, microbubble rock wool with Irish touchstone.
The process step of the said method of first embodiment of the present invention is: step 1: on fire; In smelting furnace, put into material on fire, put 1/2nd blowing-in burden(ing) coke, blowing-out after wind 4-10 minute is given in igniting; Add all the other bed coke coke of 1/2nd and tamp; Continue to give blowing-out after wind 5-10 minute, when coke is lighted fully, continue to give wind again; Step 2: get the raw materials ready; At first the building stones of selecting for use, combustion-supporting charcoal are carried out grinding and processing; Major ingredient Irish touchstone, fusing assistant rhombspar or Wingdale building stones are pulverized the piece material that is processed as diameter 3-10CM; The regulator fluorite of selecting for use and silica building stones pulverize separately are processed as the piece material of diameter 0.5-2CM; Combustion-supporting charcoal is processed into the piece material of particle diameter 5-15CM, according to part by weight: major ingredient Irish touchstone 60-85%, auxiliary material fluxing agent rhombspar 10-28% or Wingdale 10-28%; The ratio of auxiliary material regulator fluorite 5-15% and silica 0-10% is equipped with the building stones ratio and is equipped with building stones, and building stones that said outfit is good and combustion-supporting charcoal are according to volume ratio building stones 4.5-6: the ratio of combustion-supporting carbon 3-4 is got the raw materials ready; Step 3: charging; Laminated circulation charging method to expect behind the first charcoal is feeded; Building stones of getting ready and combustion-supporting charcoal are adorned the combustion-supporting charcoal of one deck according to elder generation; The different building stones of successively packing into are respectively then formed one group of circulation lamination, successively raw material are packed in the stove, feed until filling smelting furnace with the circulation stacked system; Step 4: found, in stove, give wind, heated 25-40 minute; Temperature is heated to 1350-1750 ℃ in the stove; Circulation lamination building stones in the stove are melted from the bottom to top, and the major ingredient Irish touchstone in the said lamination, auxiliary material regulator building stones form melt parcel fusing assistant prior to the fusing of fusing assistant building stones, melt continue the said fusing assistant in back; Formation is by the melt-flow thigh of the melt parcel fusing assistant melt of Irish touchstone, regulator, and said melt-flow thigh flows out from the chute mouth with 1350-1700 ℃ surface temperature; Step 5: system is fine; The melt-flow thigh is inducted on the running roller of supercentrifuge; Behind the said melt-flow stock-traders' know-how whizzer rod wheel high speed centrifugation; Be centrifuged into very thin shape melt, give uninterrupted high-pressure blast blowing cooling simultaneously, said very thin shape melt moment is blown to have the microvoid heart, the rock wool fibers of microbubble structure.
In step 1, preferably, the smelting furnace of employing is a cupola furnace, and said material selection wood on fire is mixed, and the thickness of said blowing-in burden(ing) coke is about 45-55CM, gives wind with the air speed value of 40-100m/s.
Adopt the mode on fire in the step 1 of the present invention; Very help igniting, being interrupted to the wind purpose is to let the blowing-in burden(ing) that adds for the first time fully light the blowing-in burden(ing) that adds for the second time, and the effect of stewing stove preheating is played in blowing-out; Can rapidly furnace temperature be warming up to temperature required; Treat coke perfect combustion continued to wind, can be good at removing the impurity that an ignition material burning back produces, finish blowing-out up to blowing production.
In the step 2 of present embodiment one, said basaltic staple is SiO
2Content is more than 40%, and all the other are Al
2O
3, CaO, MgO, FeO and other chemical ingredients; The chemical ingredients of said rhombspar is CaMg [CO
3]
2, main theory composition CaO contains more than 30%, and MgO contains more than 20%, CO
2Contain more than 45%, and other impurity, the staple of said Wingdale is CaCO
3The staple of said regulator fluorite is CaF
2, also contain a spot of Fe
2O
3, SiO
2With other micro substance, the staple of said regulator silica is SiO
2Preferred starting material are: select for use be the geographic hawite in Muleng, Heilongjiang Province as major ingredient, said basaltic staple is: SiO
2Contain 48.67%, Al
2O
3Contain 16.13%, CaO contains 8.02%, and MgO contains 6.77%, FeO7.29%, and other chemical ingredients; Select for use rhombspar as fusing assistant; Select for use fluorite, silica as regulator.Preferably; In step 2; Respectively said major ingredient Irish touchstone, fusing assistant rhombspar or Wingdale are processed into the piece material that particle diameter is 4-8CM respectively; With said fluorite, silica be processed into respectively particle diameter be about 0.5-1.5CM the piece material, the piece material that combustion-supporting charcoal is processed into particle diameter 6-12CM is subsequent use; More preferably, the said material side of being processed into rib type; Another preferably, said combustion-supporting charcoal is a metallurgical coke.
In step 3; Said charging; Be to feed with the laminated circulation charging method of expecting behind the first charcoal; Building stones of getting ready and combustion-supporting charcoal are adorned the combustion-supporting charcoal of one deck according to elder generation, and the different building stones of successively packing into are respectively then formed one group of circulation lamination, feed until filling smelting furnace with the circulation stacked system.For example, can adopt following mode: mode one: successively raw material is packed in the stove according to the order of the combustion-supporting charcoal of one deck, one deck Irish touchstone, one deck fusing assistant, one deck regulator, by that analogy, fill smelting furnace; Mode two: successively raw material is packed in the stove according to the combustion-supporting charcoal of one deck, one deck fusing assistant, one deck regulator, the basaltic order of one deck, by that analogy, fill smelting furnace; Mode three: successively raw material is packed in the stove according to the combustion-supporting charcoal of one deck, one deck regulator, one deck fusing assistant, the basaltic order of one deck, by that analogy, fill smelting furnace; Mode four: successively raw material is packed in the stove according to the order of the combustion-supporting charcoal of one deck, one deck fusing assistant, one deck Irish touchstone, one deck regulator, by that analogy, fill smelting furnace, or the like.Preferably; The laminated circulation charging method of expecting behind the said first charcoal; Be to form one group of circulation lamination, successively starting material packed in the smelting furnace, feed until filling smelting furnace with the circulation stacked system according to the order of the combustion-supporting charcoal of one deck, one deck fusing assistant, one deck major ingredient, one deck regulator.Preferably, the thickness of said each group circulation lamination is 45-60CM, for example; Put the coke that a layer thickness is 18-24M earlier; Put rhombspar or Wingdale building stones that a layer thickness is 6-8.5CM again, putting a layer thickness again is 20-25CM Irish touchstone building stones, puts fluorite and silica building stones that a layer thickness is 1-2.5CM at last; The rest may be inferred, with the laminated Recycle design until smelting furnace is filled material.At this, each raw-material thickness draws according to each proportion of raw material, and the present invention adopts by volume at when filling with substance and calculates, and its objective is workman's loading operation for ease, makes that technology is easier, is easy to grasp.
Get the raw materials ready and the charging method that the present invention adopts is different from the charging method of prior art.Secondly get the raw materials ready and the charging method of prior art are: at first, getting the raw materials ready is that starting material, combustion-supporting charcoal are pulverized, and makes its thorough mixing then, and, charging is that the compound of getting ready is packed in the stove until filling.The shortcoming that has with charging method of getting the raw materials ready like this is: the one, and being not easy to make raw materials melt needs higher furnace temperature can make the stone material fusion, and energy consumption is higher; The 2nd, because it is uneven to exist the local composition of major ingredient and auxiliary material to mix, make the moity of fused raw material liq can produce inequality; The 3rd, owing in the proportion of raw material of prior art, be difficult to adopt the material that is rich in silicon-dioxide of the present invention, there are acidity, the unfavorable problem of viscosity controller as major ingredient, the rock wool fibers of processing is short, poor quality; The 4th, the rock wool fibers that the prepared of prior art goes out is solid, and snappiness is poor, and than great, quality is not high.And in the present invention; The Irish touchstone that silicon-dioxide is rich in employing is major ingredient, is aided with the specified proportion of fusing assistant accent, regulator, and adopts the mode and the related process thereof of lamination dress circulation charging of the present invention; Can be good at overcoming the above-mentioned defective of prior art; And brought the positive technique effect that is different from prior art, and first aspect, what the present invention selected for use is to be rich in SiO
2Irish touchstone be major ingredient, for preparing high-quality rock wool raw-material guarantee is provided; Second aspect, in the charging method of the present invention, the bottom of organizing the circulation lamination because of each is combustion-supporting charcoal; Follow-up founding in the step, be positioned at the burning of the combustion-supporting charcoal of bottom, make the building stones of position each layer on it fully to be heated; Be easy to fusing, and can save energy, the third aspect; Because the fusing point of Irish touchstone, regulator is lower than the fusing point of ignition dope; Such charging method of the present invention, make the back found Irish touchstone in the step, regulator prior to the ignition dope fusing and form melt parcel ignition dope, after the ignition dope fusing; Form the melt-flow thigh of Irish touchstone, regulator melt parcel ignition dope melt, can realize making the rock wool fibers with the microvoid heart, microbubble structure of the present invention.
In step 4 of the present invention is founded, preferably, in stove, give wind with air speed value 40-100m/s.More preferably heating raw 30-35 minute, temperature reached about 1450--1750 ℃ in the stove, and the building stones in the stove begin to be melt into liquid state, flow out from discharge port with surface temperature 1450--1650 ℃ stream thigh.
Because the melt temperature of major ingredient Irish touchstone, regulator fluorite and silica is lower than fusing assistant rhombspar or Wingdale; Major ingredient Irish touchstone, regulator fluorite and silica are prior to fusing assistant rhombspar or Wingdale fusing; The Irish touchstone of so feasible fusing earlier of lamination charging, the melt fusion of regulator also are wrapped in outside fusing assistant rhombspar or the Wingdale; Continue after the fusing of fusing assistant rhombspar or Wingdale; Formation is wrapped in the outer melt-flow thigh of melt of fusing assistant rhombspar or Wingdale by the melt of major ingredient Irish touchstone, regulator fluorite and silica, and said melt-flow thigh flows out from notch.
In the goods process of step 5 of the present invention; The outer melt-flow stock-traders' know-how diversion trench of melt that effusive molten mass by major ingredient Irish touchstone, regulator fluorite and silica in the step 4 is wrapped in fusing assistant rhombspar or Wingdale is introduced on the running roller of running roller supercentrifuge and is carried out high speed centrifugation, and a preferred version is that whizzer is four running roller whizzers; Another preferably, said running roller is with the said melt-flow thigh of 3700-5800r/m revolution high speed centrifugation; More preferably, said running roller is with the said melt-flow thigh of 3900-5500r/m revolution high speed centrifugation; The melt of said melt-flow thigh is centrifuged into very thin shape melt; Continuing with the flow pressure simultaneously is 5-12Kpa; Air speed value is the said very thin shape melt of high pressure cooling wind refrigeration of 40-100m/s, make its moment after centrifugal be cooled blowing become have the microvoid heart, the rock wool fibers of microbubble structure; Preferably, after said melt-flow thigh was centrifuged into very thin shape melt, continuing with the flow pressure was 6-10Kpa, and air speed value is the said very thin shape melt of high pressure cooling wind refrigeration of 50-100m/s.This is different with the chemical ingredients of silica, fusing assistant rhombspar or Wingdale because of major ingredient Irish touchstone, regulator fluorite, and its fusing point is different, and the fusing point of major ingredient Irish touchstone, regulator is lower than the fusing point of fusing assistant; The melt that the feasible melt-flow thigh that forms of charging method of the present invention is major ingredient Irish touchstone, regulator is wrapped in outside the fusing assistant melt, because the chemical ingredients of each material is different, melt-flow thigh internal and external temperature is different; When becoming very thin shape melt through high speed centrifugation, discharge great amount of heat energy; Through high-pressure blast cooling blowing, meet cold contraction rapidly simultaneously, moment is cooled into rock wool fibers; Feasible rock wool fibers of blowing out has the microvoid heart, microbubble structure; Accompanying drawing 1 is the photo of said rock wool fibers at microscopically, and because of proportioning raw materials of the present invention, the rock wool fibers that makes is rich in SiO
2, have fiber finer and grow, light specific gravity, high temperature resistant, corrosion resistant high-quality advantage.
Preferably, method of the present invention also has step 6: goods, Phenol aldehyde resin is sprayed onto on the rock wool fibers that is formed by blowing with vaporific, and be sent on the trigger squeeze through travelling belt, be cured, dry, cut after the oven dry and pack, process asbestos product.
It is thus clear that; Process method of the present invention; Overcome prior art be difficult to use Irish touchstone to make the technological deficiency of high-quality rock wool as major ingredient, all kinds of starting material that the present invention is selected for use fully melt decomposition, the drawback of avoiding traditional proportioning mode and technology thereof to bring; Have both save energy, improved the positive technique effect of the quality and yield of rock wool again.
Embodiment two
Second embodiment of the present invention is about being the method that major ingredient is made the microvoid heart, microbubble rock wool with Irish touchstone.
The method of the method for second embodiment of the present invention and embodiment one different be in: in the step 2; Raw-materially choose, material rate is different; The starting material of choosing are Irish touchstone, rhombspar, fluorite; According to part by weight be: Irish touchstone 66-74%: rhombspar 15-26%: the ratio of fluorite 5-12% is carried out respectively and is got the raw materials ready, and building stones that said outfit is good and combustion-supporting charcoal are according to volume ratio: building stones 4.5-6: the ratio of combustion-supporting charcoal 3-4 is got the raw materials ready respectively; Step 3: charging; The laminated circulation charging method charging that the building stones of getting ready and combustion-supporting charcoal are expected after according to first charcoal; The lamination group that each group is made up of the combustion-supporting charcoal of one deck, one deck rhombspar, one deck Irish touchstone, one deck fluorite; Its thickness is 45-60CM, and preferred thickness is 45-55CM, feeds until filling smelting furnace with the laminated circulation; Step 4: found, in stove, give wind, heating raw 28-35 minute; Temperature is heated to 1450-1650 ℃ in the stove; Make the building stones of adding begin to be melt into liquid state, formation temperature is the melt-flow thigh of 1450-1650 ℃ Irish touchstone melt parcel rhombspar melt, and the stream thigh is flowed out from the chute mouth.
All the other process steps in present embodiment two are identical with embodiment's one, repeat no more at this.
Embodiment three
Embodiments of the invention three are about being the method that major ingredient is made the microvoid heart, microbubble rock wool with Irish touchstone.
The method of present embodiment three is with the different of method of embodiment one: in the step 2; Raw-material choose different with ratio; The starting material of choosing according to part by weight are: Irish touchstone 60-70%: rhombspar 20-28% or Wingdale 20-28%: fluorite 5-10%: the ratio of silica 5-10% is carried out respectively and is got the raw materials ready, and building stones that said outfit is good and combustion-supporting charcoal are according to volume ratio: building stones 4.5-6: the ratio of combustion-supporting charcoal 3-4 is got the raw materials ready respectively; Step 3: charging; With the laminated circulation charging method charging that the building stones of getting ready and combustion-supporting charcoal are expected after according to first charcoal, the lamination assembling that each group is made up of the order of the combustion-supporting charcoal of one deck, one deck fusing assistant, one deck Irish touchstone, one deck regulator expects that the thickness of said lamination group is 45-60CM; With this laminated circulation charging method until filling smelting furnace; The preferred thickness of lamination group is 45-55CM, and wherein, the loading sequence of regulator layer fluorite layer and silica layer can be in no particular order; Step 4: found; In stove, give wind; Heating raw 28-35 minute, temperature was heated to 1350-1650 ℃ in the stove, makes the building stones of adding begin to be melt into liquid state; Formation temperature is 1350-1650 ℃ Irish touchstone, the melt-flow thigh of regulator melt parcel fusing assistant rhombspar melt, and the stream thigh is flowed out from the chute mouth.
In the present embodiment, select for use silica, fluorite as regulator, the staple of said silica is SiO
2, its content is more than 90%, and the staple of said fluorite is a Calcium Fluoride (Fluorspan), also contains a spot of Fe
2O
3, SiO
2With other trace element.
Preferably, in step 3, adopt one deck charcoal, one deck rhombspar, one deck Irish touchstone, one deck fluorite, the mode laminated circulation charging that one deck silica is such is until filling it up with material.
Identical among all the other process steps in present embodiment three and the embodiment one repeated no more at this.
Embodiment four
Embodiments of the invention four are about being the method that major ingredient is made the microvoid heart, microbubble rock wool with Irish touchstone.
The method of present embodiment four is with the different of method of embodiment one:
In the step 2; Raw-material choose different with ratio; The starting material of choosing according to part by weight are: Irish touchstone 70-85%: rhombspar or Wingdale 10-25%: the ratio of fluorite 5-12% is carried out respectively and is got the raw materials ready, and building stones that said outfit is good and combustion-supporting charcoal are according to volume ratio: building stones 4.5-6: the ratio of combustion-supporting charcoal 3-4 is got the raw materials ready respectively; Step 3: charging; The laminated circulation charging method charging that the building stones of getting ready and combustion-supporting charcoal are expected after according to first charcoal; The lamination assembling material that each group is made up of the order of the combustion-supporting charcoal of one deck, one deck fusing assistant, one deck Irish touchstone, one deck regulator; The thickness of said lamination group is 45-60CM, and preferably thickness is 45-55CM, with this laminated circulation charging method until filling smelting furnace; Step 4: found; In stove, give wind; Heating raw 28-40 minute, temperature was heated to 1450-1750 ℃ in the stove, makes the building stones of adding begin to be melt into liquid state; Formation temperature is 1450-1750 ℃ Irish touchstone, the melt-flow thigh of fluorite molten mass parcel rhombspar melt, and the stream thigh is flowed out from the chute mouth.
Identical among all the other process steps in present embodiment four and the embodiment one repeated no more at this.
Embodiment five
Present embodiment five is about utilizing the rock wool product with the microvoid heart, microbubble structure of method preparation of the present invention.
Said rock wool product is by with part by weight: major ingredient Irish touchstone 60-85%; Fusing assistant rhombspar 10-28% or Wingdale 10-28%; The lithotome of regulator fluorite 5-15% and silica 0-10% is starting material; Form through prepared of the present invention, said rock wool fibers has the structure of the microvoid heart, microbubble, and accompanying drawing 1 is the photo of said rock wool fibers at microscopically.
Method of the present invention can produce have the microvoid heart, the concrete principle of microbubble structure rock wool is: major ingredient Irish touchstone staple is SiO
2, Al
2O
3, the staple of auxiliary material fluxing agent rhombspar is CaO, MgO, the staple of Wingdale is CaCO
3, the staple of regulator fluorite is a Calcium Fluoride (Fluorspan), also contains a spot of Fe
2O
3, SiO
2With other micro substance, the staple of silica is SiO
2, the fusing point of major ingredient Irish touchstone, regulator fluorite and silica is lower than rhombspar or Wingdale.The final thawing mechanism of said building stones in smelting furnace is: based on fusing-fusion-congruent melting process, promptly the meltable raw material in the batching at first melts, and fuses the infusibility raw material then, and consolute is an one then.Found in the process of the present invention, major ingredient Irish touchstone, regulator fluorite, silica are lower than fusing assistant rhombspar or Wingdale because of fusing point, so major ingredient Irish touchstone, regulator melt prior to fusing assistant; Melt after the regulator fusing is regulated for melt acidity, viscosity, and wraps up unfused fusing assistant, and fusing assistant fuses under high temperature action; And then with the melt consolute of major ingredient Irish touchstone, regulator, form the Irish touchstone among the present invention, the molten mass of regulator wraps in the melt-flow thigh of the outside of fusing assistant rhombspar or Wingdale melt, because of fused raw material chemical ingredients, fusing point different; Its fused stream strand internal and external temperature is different; After said melt-flow plume went out notch, effusive melt-flow thigh was approximate glass plastid, through whizzer rod wheel high speed centrifugation; Be centrifuged into very thin shape melt and discharge great amount of heat energy; After release heat energy is met the blowing of high pressure cooling high wind simultaneously, shrink cooling formation rock wool fibers rapidly, the microvoid heart, microbubble phenomenon structurally can appear in said rock wool fibers.
The rock wool fibers of the inventive method preparation is because the raw-material proportioning of selecting materials of the present invention makes its rock wool fibers be rich in SiO
2, the moity of said rock wool fibers is: SiO
2Per-cent be 40-45%, Al
2O
3Per-cent be 10-15%, the per-cent of CaO is 20-25%, the per-cent of MgO is 8-11%, all the other are micro substance Fe
2O
3, FeO, T iO
2, K
2O, Na
2O and impurity.
Because said rock wool is rich in SiO
2, make said rock wool fibers have many rock wool fibers that is superior to prior art for preparing, the staple length that rock wool fibers of the present invention has is 30-50CM, and Fibre diameter is 4-7 μ, and proportion is 30-60kg/m
3, thermal conductivity≤0.035w/mk that said fiber has, maximum operation (service) temperature is 700 ℃, its acidity quotient is 1.2-2.6.
The rock wool product that method among the present invention is produced; Because its dioxide-containing silica is high; Rock wool fibers has the microvoid heart, microbubble structure; Have that fiber is long, toughness is good, in light weight, high flame retardant, low heat conduction, good characteristic such as corrosion-resistant, be high-quality insulation, heat insulation, erosion resistant, can satisfy the demand of various fields such as building, industrial manufacturing, aerospace for high performance insulation, lagging material.
Claims (11)
1. one kind is the major ingredient method of making the microvoid heart, microbubble rock wool with Irish touchstone, and it is characterized in that: the step of said method is:
Step 1: on fire, in smelting furnace, put into material on fire, put 1/2nd blowing-in burden(ing) coke; Blowing-out after wind 4-10 minute is given in igniting, adds all the other blowing-in burden(ing) coke of 1/2nd and tamp, continues to blowing-out after wind 5-10 minute; When coke is lighted fully, continue to give wind again;
Step 2: get the raw materials ready; At first the building stones of selecting for use, combustion-supporting charcoal are carried out grinding and processing; Major ingredient Irish touchstone, auxiliary material fluxing agent rhombspar or Wingdale building stones are pulverized the piece material that is processed as diameter 3-10CM; The auxiliary material regulator fluorite of selecting for use and silica building stones pulverize separately are processed as the piece material of diameter 0.5-2CM; Combustion-supporting charcoal is processed into the piece material of particle diameter 5-15CM, according to part by weight: major ingredient Irish touchstone 60-85%, fusing assistant rhombspar 10-28% or Wingdale 10-28%; The ratio of regulator fluorite 5-15% and silica 0-10% is equipped with building stones respectively, and building stones that said outfit is good and combustion-supporting charcoal are according to volume ratio building stones 4.5-6: the ratio of combustion-supporting carbon 3-4 is got the raw materials ready respectively;
Step 3: charging; Laminated circulation charging method to expect behind the first charcoal is feeded; Building stones of getting ready and combustion-supporting charcoal are adorned the combustion-supporting charcoal of one deck according to elder generation; The different building stones of successively packing into are respectively then formed one group of circulation lamination, successively raw material is packed in the stove, with the circulation stacked system until filling smelting furnace;
Step 4: found; In stove, give wind; Heated 25-40 minute, temperature in the stove is heated to 1350-1750 ℃, the circulation lamination building stones of packing in the stove are melted from the bottom to top; Major ingredient Irish touchstone in the said lamination, auxiliary material regulator building stones form melt parcel fusing assistant prior to the fusing of fusing assistant building stones; Continue after the fusing of said fusing assistant, form melt-flow thigh by the melt parcel fusing assistant melt of Irish touchstone, regulator, said melt-flow thigh flows out from the chute mouth with 1350-1700 ℃ surface temperature;
Step 5: system is fine; The melt-flow thigh is inducted on the running roller of supercentrifuge; Behind the said melt-flow stock-traders' know-how whizzer rod wheel high speed centrifugation; Be centrifuged into very thin shape melt, give uninterrupted high-pressure blast blowing cooling simultaneously, said very thin shape melt moment is blown to have the microvoid heart, the rock wool fibers of microbubble structure.
2. the method for claim 1 is characterized in that:
In the step 1, in stove, give wind with air speed value 40-100m/s;
In the step 2; Said major ingredient Irish touchstone, said fusing assistant rhombspar or Wingdale building stones are processed to the piece material that particle diameter is 4-8CM; Said regulator fluorite, silica building stones are processed as the piece material that particle diameter is 0.5-1.5CM, and said combustion-supporting charcoal is processed as the piece material of particle diameter 6-12CM;
In the step 3; In the laminated circulation charging method of expecting behind the said first charcoal; Be to form one group of circulation lamination, successively starting material packed in the stove that the thickness of said each group circulation lamination is 45-60CM according to the order of the combustion-supporting charcoal of one deck, one deck fusing assistant, one deck Irish touchstone, one deck regulator;
3. like claim 1 to 2 a described method, it is characterized in that:
In the step 1, said smelting furnace is a cupola furnace, and the thickness of said bed coke coke is 40-60CM;
In the step 2; Said major ingredient Irish touchstone, said fusing assistant rhombspar or Wingdale building stones are processed to the square rib type piece material that particle diameter is 4-8CM; Said regulator fluorite, silica building stones are processed as the square rib type piece material that particle diameter is 0.5-1.5CM; Said combustion-supporting charcoal is a metallurgical coke, and it is processed as the piece material of particle diameter 6-12CM;
In the step 3; The laminated round-robin charging method of expecting behind the said first charcoal is that thickness according to combustion-supporting charcoal layer is that the thickness of 18-24CM, fusing assistant rhombspar or Wingdale layer is that the thickness of 6-8.5CM, major ingredient basaltic layer is that the thickness of 20-25CM building stones, regulator fluorite and silica is the sequential loop lamination charging of 1-2.5CM;
Step 4: found, in stove, give wind, heated 28-35 minute, temperature is heated to 1450-1650 ℃ in the stove, makes the building stones of adding begin to be melt into liquid state, and formation temperature is 1450-1650 ℃ Irish touchstone, the melt-flow thigh of regulator melt parcel fusing assistant melt.
4. like the described method of one of claim 1 to 3, it is characterized in that:
In the step 1, the thickness of said bed coke coke is 45-55CM, and said material on fire is that wood is mixed, and in stove, gives wind with air speed value 50-100m/s;
In the step 2, choose starting material and according to part by weight be: Irish touchstone 66-74%: rhombspar 15-26%: the ratio of fluorite 5-12% is carried out respectively and is got the raw materials ready;
In the step 3; The laminated circulation charging method of expecting behind the said first charcoal; Be to form one group of circulation lamination according to the order of the combustion-supporting charcoal of one deck, one deck rhombspar, one deck Irish touchstone, one deck fluorite; Successively raw material is packed in the stove until stove is filled material, the thickness of said each group circulation lamination is 45-55CM;
In the step 4, the said wind of in stove, giving, its air speed value is 40-100m/s;
In the step 5; The running roller of said supercentrifuge is with the said melt-flow thigh of 3700-5800r/m revolution high speed centrifugation; The melt of said melt-flow thigh is centrifuged into very thin shape melt, and continuing with the flow pressure simultaneously is that 5-12Kpa, air speed value are the said very thin shape melt of high pressure cooling wind refrigeration of 40-100m/s.
5. like the described method of one of claim 1 to 4, it is characterized in that:
In the step 4, said in stove, to give the air speed value of wind be 50-100m/s;
In the step 5; Said supercentrifuge is four running roller whizzers; The running roller of said whizzer is with the said melt-flow thigh of rotating speed 3900-5500r/m high speed centrifugation; The melt of said melt-flow thigh is centrifuged into very thin shape melt, and continuing with the flow pressure simultaneously is 6-10Kpa, and air speed value is that the high pressure cooling air of 50-100m/s uninterruptedly cools off the said very thin shape melt of blowing.
6. like the described method of one of claim 1 to 5; It is characterized in that: also have step 6: goods; Phenol aldehyde resin is sprayed onto on the rock wool fibers that is formed by blowing with vaporific, is sent on the trigger squeeze, be cured, dry through travelling belt; Cut after the oven dry and pack, process asbestos product.
7. rock wool product according to the preparation of the described method of claim 1-6; It is characterized in that: said rock wool is by with part by weight: major ingredient Irish touchstone 60-85%; Auxiliary material fluxing agent rhombspar 10-28% or Wingdale 10-28%; The lithotome of auxiliary material regulator fluorite 5-15% and silica 0-10% forms for the starting material processing and preparing, and said rock wool fibers has the structure of the microvoid heart, microbubble.
8. want 7 described rock wool products like right, it is characterized in that: said rock wool is with part by weight Irish touchstone 66-74%: rhombspar 15-26%: the ratio of fluorite 5-12% is prepared from.
9. like claim 7, one of 8 described rock wool products, it is characterized in that: the moity of said rock wool fibers is: SiO
2Per-cent be 40-45%, Al
2O
3Per-cent be 10-15%, the per-cent of CaO is 20-25%, the per-cent of MgO is 8-11%, all the other are micro substance Fe
2O
3, FeO, TiO
2, K
2O, Na
2O and impurity.
10. claim 7, one of 8 described rock wool products, it is characterized in that: it is 30-50CM that said rock wool has staple length, and Fibre diameter is 4-7 μ, and proportion is 30-60kg/m
3
11. claim 7, one of 8 described rock wool products is characterized in that: thermal conductivity≤0.035w/mk that said fiber has, said rock wool maximum operation (service) temperature is 700 ℃, the acidity quotient of said rock wool fibers is 1.2-2.6.
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| CN 201210230153 CN102757178B (en) | 2012-07-05 | 2012-07-05 | Method for manufacturing micro-hollow and micro-bubble rock wool by using basalt as a main ingredient and product of the method |
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