CN105271691A - Technological method for producing inorganic fibers from red mud - Google Patents
Technological method for producing inorganic fibers from red mud Download PDFInfo
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- CN105271691A CN105271691A CN201510668430.5A CN201510668430A CN105271691A CN 105271691 A CN105271691 A CN 105271691A CN 201510668430 A CN201510668430 A CN 201510668430A CN 105271691 A CN105271691 A CN 105271691A
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Abstract
The invention discloses a technological method for producing inorganic fibers from red mud and belongs to the field of comprehensive utilization of the red mud. According to the technological method, a curing agent and an acidity coefficient modifier are added to the red mud, a mixture and coke are molten at the high temperature, element resources including Si, Ca, Fe, Al, Na and Mg in the red mud, the curing agent and the acidity coefficient modifier are sufficiently utilized, the red mud is taken as a main material for production of the inorganic fibers, the ratio of the dosage of the red mud can be higher than 70%, red mud pollution is effectively treated, the produced inorganic fibers reach the level of rock wool, and economic, social and environmental benefits are remarkable. The technology is simple, the production cost is low, and large-scale production of the red mud for comprehensive utilization can be realized.
Description
Technical field
The invention belongs to red mud field of comprehensive utilization, particularly a kind of processing method utilizing red mud to produce inorganic fibre.
Background technology
Red mud is the residue that bauxite produces after " Bayer process " or " sintering process " proposes aluminum oxide.The generation of red mud is relevant with production method and ore grade, and generally often produce the slag that 1 ton of aluminum oxide will produce 1-1.7 ton, these slags are sorrel because being rich in ferric oxide, be referred to as red mud, belong to hazardous solid refuse, raw material grade is lower, and red mud generation is larger.China is as the large alumina producing state of Century Square, and the red mud of annual discharge is up to tens million of ton.A large amount of red muds can not fully effectively utilize, and at present, the red mud process of alumina producer still adopts builds red mud reservoir dam and stack, and along with the continuous increase of quantity discharged, not only occupies a large amount of farmlands, and produces larger impact to environment.At present generally to carry iron, master is treated to the utilization of red mud, but from actual operation, it is higher that red mud carries iron cost, carries the powder ash after iron and cause secondary pollution again.Carry the red mud after iron as materials for wall, make roadbed material and use, quality needs long-term inspection further; Use as plastic material, crystallizing glass sheet material, red mud porcelain granule, Portland cement, can only be additive, consumption be little; Had in the past and utilized that red mud is auxiliary material and the higher unslaked lime of flyash calcium oxide content, industrial solid wastes carbide slag, phosphorus slag, magnesium slag are raw material production inorganic fibre, the acidity quotient of the inorganic fibre can only be auxiliary material yet, the consumption of red mud is relatively less, produced does not reach Standard.
The physical detection result of red mud shows: red mud fusing point is 1200 ~ 1250 DEG C, and the transudate basicity pH value 10 ~ 12 of red mud, granularity is 0.08 ~ 0.25 μm, relative density 2.7 ~ 2.9, apparent relative density 0.8 ~ 1.0.Its chemical composition is different and slightly different with different production technique, main mineral composition is gehlenite (Ca2Al2SiO7), quartz (SiO2), andradite (Ca3Fe2+3 (SiO4) 3) and calcium schorlomite (Ca3TiFeSi3O12), and mainly containing by elemental composition is Si, Al, Fe and Ca.Be can be used as by the known red mud of following table and produce the raw material of inorganic fibre, and Na, Mg in red mud, K element have certain combustion-supporting effect, can reduce the consumption of coke in fusion process.
As, Chinese patent 200910048598.0, its method be add in red mud reagent carry out in and, then add blender, glidant etc. and carry out high temperature melting, melt gets rid of into inorganic fibre through supercentrifuge.Its technology needs to neutralize red mud acid adding, complex process, and production cost is high, makes neutralizing agent with acid, can produce harmful gas, have a certain impact to environment in high-temperature fusion process.The inorganic fibre simultaneously produced can only reach " mineral wool " technical indicator reluctantly, and can not reach national " rock wool " technological standard, particularly " acidity quotient " index.
Summary of the invention
The object of the present invention is to provide the processing method utilizing red mud to produce inorganic fibre, red mud consumption is more than 70%.
The present invention is achieved in that
Add solidifying agent, acidity quotient conditioning agent in red mud, carry out high-temperature fusion with coke, form fused solution; Fused solution top is inorganic fibre liquation, can make inorganic fibre; Fused solution bottom is iron liquation, can propose iron process.
The present invention adopts two kinds of schemes:
Utilize red mud to produce a processing method for inorganic fibre, its processing step is: (1) is that major ingredient adds cement with red mud, adds water and is uniformly mixed, and powerful compacting balling-up is block, naturally dries, solidify to form ball lumpy material; (2) described ball lumpy material is prepared burden with basalt ore block, coke again, mixes, and forms semi-product material; (3) described semi-product material carries out high-temperature fusion in smelting furnace, forms fused solution; (4) fused solution top is inorganic fibre liquation, and inorganic fibre liquation gets rid of silk through whizzer, after solidification, forms inorganic fibre; Fused solution bottom is iron liquation, carries out proposing iron process.
Another kind utilizes red mud to produce the processing method of inorganic fibre, and its processing step is: (1) is that major ingredient adds cement, ground silica with red mud, adds water and is uniformly mixed, and powerful compacting balling-up is block, naturally dries, solidify to form ball lumpy material; (2) ball lumpy material is prepared burden with coke again, mixes, and forms semi-product material; (3) described semi-product material carries out high-temperature fusion in smelting furnace, forms fused solution; (4) fused solution top is inorganic fibre liquation, and inorganic fibre liquation gets rid of silk through whizzer, after solidification, forms inorganic fibre; Fused solution bottom is iron liquation, carries out proposing iron process.
After the present invention adopts such scheme, take full advantage of Si, Ca, Fe, Al, Na, Mg element resource in red mud, solidifying agent, acidity quotient conditioning agent, be that inorganic fibre produced by major ingredient with red mud, red mud proportioning consumption can reach more than 70%, effective improvement red mud pollutes, the inorganic fibre produced reaches rock wool rank, economic benefit, social enviroment protection remarkable benefit.Technique is simple, and production cost is low, can realize the large-scale production of red mud comprehensive utilization.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
The contaminative waste residue of discharging when red mud is Aluminium industry extraction aluminum oxide, detected result shows: red mud fusing point is 1200 ~ 1250 DEG C, the transudate basicity pH value 10 ~ 12 of red mud, and granularity is 0.08 ~ 0.25 μm, relative density 2.7 ~ 2.9, apparent relative density 0.8 ~ 1.0.Its chemical composition is slightly different with different production technique difference, main mineral composition is gehlenite (Ca2Al2SiO7), quartz (SiO2), andradite (Ca3Fe2+3 (SiO4) 3) and calcium schorlomite (Ca3TiFeSi3O12), and mainly containing by elemental composition is Si, Al, Fe and Ca.Red mud principal element chemical composition is as following table:
| Composition | SiO2 | Fe2O3 | Al2O3 | CaO | Na2O | MgO | K2O | TiO2 |
| Content | 20-32 | 10-17 | 5-7 | 42-46 | 2-2.3 | 1-1.5 | 0.2-0.4 | 2-2.2 |
It can thus be appreciated that red mud can be used as produces the raw material of inorganic fibre, and Na, Mg in red mud, K element have certain combustion-supporting effect, can reduce the consumption of coke in fusion process.
Embodiment 1
Red mud is as major ingredient, and before batching, its water content control is 10 ~ 14%, and add cement by the weight ratio of 1:0.1 ~ 0.15, add water and be uniformly mixed, mixed total water content controls 8 ~ 12%; Described cement adopts 325 or 425 silicate cements, uses as solidifying agent.
Compound brute force compacting balling-up is block, and about 4 × 6 × 8 ㎝, dry naturally, solidify to form ball lumpy material.
Again ball lumpy material, basalt ore block, coke are carried out batching by the weight ratio of 3.5:0.1 ~ 0.2:1 and mix, form semi-product material; Basalt ore block specifications 8 × 10 × 12 about ㎝, SiO2 content 45%, Al2O3 content more than 14%, use as acidity quotient conditioning agent; Coke size 6-10cm, calorific value >7000kca/k.
Semi-product material carries out high-temperature fusion in smelting furnace, and temperature during high-temperature fusion is 1400 ~ 1550 DEG C, forms fused solution.
Fused solution top is inorganic fibre liquation, and inorganic fibre liquation flow to whizzer, gets rid of silk process by whizzer, to throwing away the vaporific solid solution of filamentary fibers inject high pressure, form inorganic fibre, the diameter 3 ~ 7um of inorganic fibre, length 10 ~ 20cm, inorganic fibre can make formation series product.The acidity quotient of inorganic fibre, between 1.4 ~ 1.6, can reach " rock wool " level technical indicator.Fused solution bottom is iron liquation, carries out proposing iron process, obtains iron as byproduct.
Cement, as solidifying agent, on the one hand, can supplement silicon in red mud further, the deficiency of aluminium content plays the effect of additive; The effect of solidification red mud can be played on the other hand.Red mud consumption can reach 70 ~ 80%.
Embodiment 2
Red mud is as major ingredient, and before batching, its water content control is 10 ~ 14%, and add cement, ground silica by the weight ratio of 1:0.15:0.1 ~ 0.2, add water and be uniformly mixed, mixed total water content controls 8 ~ 12%; Described cement adopts 325 or 425 silicate cements, uses as solidifying agent; Ground silica specification is at 325 ~ 500 orders, and SiO2 content more than 95%, uses as acidity quotient conditioning agent.
Compound brute force compacting balling-up is block, and about 4 × 6 × 8 ㎝, dry naturally, solidify to form ball lumpy material.
The weight ratio of ball lumpy material and coke being pressed 3.5:1 is again prepared burden, and prepares burden, mixes, and forms semi-product material; Coke size 6 ~ 10cm, calorific value >7000kca/k.
Semi-product material carries out high-temperature fusion in smelting furnace, and temperature during high-temperature fusion is 1550 ~ 17000 DEG C, needs hyperbaric oxygen combustion-supporting, forms fused solution.
Fused solution top is inorganic fibre liquation, inorganic fibre liquation flow to whizzer, silk process is got rid of by whizzer, to throwing away the vaporific solid solution of filamentary fibers inject high pressure, form inorganic fibre, the diameter 3 ~ 7um of inorganic fibre, length 10 ~ 20cm, inorganic fibre can make formation series product, and the acidity quotient of inorganic fibre, between 1.5 ~ 1.7, reaches " rock wool " level technical indicator.Fused solution bottom is iron liquation, carries out proposing iron process, obtains iron as byproduct.
Cement, as solidifying agent, on the one hand, can supplement silicon in red mud further, the deficiency of aluminium content plays the effect of additive; The effect of solidification red mud can be played on the other hand.
Ground silica can supplement the deficiency of silicone content in red mud and play the effect of additive, also plays the acidity quotient effect regulating inorganic fibre; Ground silica can reduce the melt temperature in stove on the other hand, reduces coke consumption, reduces production cost.Red mud consumption can reach 70 ~ 80%.
For verifying effect of the present invention, being combined in several embodiments of Zhuan Li ﹙ CN102001823A ﹚ file announcement in red mud, adding the higher industrial solid wastes of calcium oxide content, as: flyash, carbide slag, phosphorus slag, magnesium slag etc., carried out following experiment:
One, primary device common segment is tested:
Forklift, pulverizer, box feeding machine, ingredient conveying machine, Double shaft stirring mixer, ball press, batch mixing transfer roller, cupola furnace, cooling water system, blower fan, four be rolled off scheming, binding agent preparation and apply, collect cotton, swing spread felt, solidify aftertreatment and packaging, dedusting, burned waste gas and combustion air heat-exchange system, production line electric and automatic control equipment, hyperbaric oxygen combustion-supporting system etc. (hyperbaric oxygen combustion-supporting system in experiment one, test in two and do not need, only use in experiment three).General coke (granularity 6 ~ 10cm, calorific value >7000kca/k).Following all experiments is produced on same production line.
Two, each starting material principal element chemical composition % content:
Red mud, cement, basalt, ground silica, flyash, carbide slag, phosphorus slag, magnesium slag principal element chemical composition % content.
Table 1: component content table
Three, experimental section
Experiment one: add the higher industrial solid wastes of calcium oxide content respectively in red mud (cost not very), as: flyash, carbide slag, consumption, magnesium slag etc. (cost is not very), the unslaked lime adding high calcium composition does and solidifies, and produces inorganic fibre.
1, batching pressure ball workshop section:
Unslaked lime, flyash, carbide slag, phosphorus slag, the magnesium slag of high calcium composition is added respectively, solidification balling-up block major ingredient with red mud.
Table 2: allocation sheet
2, produce as a trial:
After table 2 " sample number 1,2,3 " is prepared burden respectively, according to red mud water content (batching before water content control 10 ~ 14%), red mud is added water Homogeneous phase mixing, after mixing, total water content controls 8 ~ 12%, strong pressurizing makes ball lumpy material, naturally dries and solidify to form major ingredient (ball block major ingredient specification 4 × 6 × 8 ㎝).By the block major ingredient of ball, coke (granularity 6 ~ 10cm, calorific value >7000kca/k) batching, by 3.5:1 mixing, deliver to smelting furnace by transfer roller, in smelting furnace, carry out high-temperature fusion, form fused solution.Fused solution top is inorganic fibre solution, to whizzer, (whizzer adopts four to be rolled off scheming to inorganic fibre solution stream, its rotating speed is 4800 ~ 6000 revs/min), silk process is got rid of by whizzer, while throwing away filamentary fibers, to filamentary fibers silk high pressure atomized spray solid solution, (solid solution to be coordinated by certain weight ratio by uric acid resin adhesive liquid and water and forms, sodified water solution usage and inorganic fibre mix by certain weight high pressure atomized spray again), obtained inorganic fibre (the diameter 3 ~ 7um of inorganic fibre, length 7 ~ 20cm) is collected.Form series product.Fused solution bottom is iron liquation, and carry out proposing iron process, byproduct is iron.Temperature during smelting furnace high-temperature fusion is 1450 ~ 1550 DEG C (not needing the oxygen and aiding combustion that adds high pressure).Produce by experiment (when testing production, selecting " sample number 2 " ball block in the table 2 of flyash, carbide slag, phosphorus slag, magnesium slag and calcium lime burden respectively), the inorganic fibre obtained, byproduct iron.
Table 3: product table
3, economic benefit situation:
With adding flyash, carbide slag, phosphorus slag, magnesium slag in red mud, with 11 tons of ball block major ingredients and 3 tons of coke, by table 3 " sample number 2 " ball block, with same production line continuous seepage about 3 hours statistics: produce inorganic fibre test-results and economic benefit (adding up to cost to be: artificial, vehicle, the electricity charge, coke, Sweet natural gas, tenderizer, equipment amortization etc.).
Table 4: economic benefit table
4, brief summary:
Inorganic fibre is produced as a trial by preparing burden at unslaked lime, flyash, rock ballast, phosphorus slag, magnesium slag and red mud, the series product acidity quotient that final production goes out is the highest 1.1, " mineral wool " technical indicator can only be reached reluctantly by the inorganic fibre produced as a trial out, higher, the per ton starting material of inorganic fibre slag ball content can obtain maximum 300 yuan of gross profit, economic benefit is poor, the highest consumption 50% of red mud, does not make red mud really account for major ingredient.
Experiment two: be that main raw material adds solidifying agent (with Portland cement), acidity quotient conditioning agent (basalt ore block) batching produces inorganic fibre with red mud.
1, batching pressure ball workshop section:
Be that major ingredient adds solidifying agent (with normal silicate 325 or 425 cement), acidity quotient conditioning agent (with basalt ore block 8 × 10 × 12 about ㎝, SiO2 content 45%, Al2O3 content more than 14%) batching produces inorganic fibre with red mud.Be that major ingredient adds cement with red mud, first use red mud (batching before water content control 10 ~ 14%), cement prepares burden in the ratio of 1:0.15, according to red mud water content, red mud is added water Homogeneous phase mixing after batching, after mixing, total water content controls 8 ~ 12%, strong pressurizing makes ball lumpy material, naturally dries and solidify to form major ingredient (ball block major ingredient specification 4 × 6 × 8 ㎝).
Table 5: allocation sheet
2, produce as a trial:
Prepare burden with table 5 ball block major ingredient and acidity quotient conditioning agent basalt ore block and produce inorganic fibre.Prepare burden with basalt ore block respectively by reference table 6 " sample number 1,2,3 ", deliver to smelting furnace respectively by transfer roller, in smelting furnace, carry out high-temperature fusion, form fused solution.Fused solution top is inorganic fibre solution, to whizzer, (whizzer adopts four to be rolled off scheming to inorganic fibre solution stream, its rotating speed is 4800 ~ 6000 revs/min), silk process is got rid of by whizzer, while throwing away filamentary fibers, to filamentary fibers silk high pressure atomized spray solid solution, (solid solution to be coordinated by certain weight ratio by uric acid resin adhesive liquid and water and forms, sodified water solution usage and inorganic fibre mix by certain weight high pressure atomized spray again), obtained inorganic fibre (the diameter 3 ~ 7um of inorganic fibre, length 10 ~ 20cm) is collected.Form series product.Fused solution bottom is iron liquation, and carry out proposing iron process, byproduct is iron.Temperature during smelting furnace high-temperature fusion is 1450 ~ 1550 DEG C (not needing the oxygen and aiding combustion that adds high pressure).Present method adds solidifying agent cement: on the one hand, and cement can play the effect of solidifying agent, makes the block major ingredient hardness of ball reach requirement; On the other hand, the calcium in cement, element silicon play certain supplementary function to red mud.Present method adds acidity quotient conditioning agent basalt ore block: on the one hand, can supplement silicon in red mud further, the deficiency of aluminium content plays the effect of additive; On the other hand, the acidity quotient regulating effect of Dui Chan Pin ﹙ Wu machine Xian Wei ﹚ can be played; Temperature during melting is simultaneously relatively low, can play the effect reducing production cost.
Add 15% cement with 85% red mud and generate ball block major ingredient, prepare burden 11 tons with acidity quotient conditioning agent (basalt ore block) by table 6 respectively, produce inorganic fibre test-results.
Table 6: product table
3, economic benefit situation:
Add 15% cement with 85% red mud and generate ball block major ingredient, and basalt ore block press reference table 6 and prepare burden 11 tons respectively, with 3 tons of coke production inorganic fibres, add up to cost (manually, electric, coke and tenderizer, equipment amortization) and economic benefit.
Table 7: economic benefit table
When red mud disregards cost, mainly contain vehicle, the electricity charge, cement, basalt ore block, coke, Sweet natural gas, tenderizer, manually for production cost, 1200 yuan/ton, inorganic fibre finished product valency 2800 yuan/ton.Ball block major ingredient and basalt ore block batching, raw material per ton can produce more than 0.75 ton inorganic fibre and more than 0.1 ton bread iron.When profit disregarded by byproduct bread iron, starting material per ton can obtain gross profit more than about 1000 yuan, (when actual production, selecting " sample number 2 " batching ball block and basalt ore block consumption in reference table 6).
4, brief summary:
With red mud be major ingredient add silicate 325 or 425 cement do solidifying agent, basalt ore block as acidity quotient conditioning agent produce inorganic fibre, with table 6 " sample number 1,2,3 " batching 11 tons, with 3 tons of coke production inorganic fibres.With same production line continuous seepage about 3 hours statistics: the series product that final production goes out can reach rock wool level index (acidity quotient is 1.4 ~ 1.6), produce inorganic fibre more than 8 tons, output asperities iron clad 1.1 tons, inorganic fibre slag ball content≤5%, starting material per ton can obtain gross profit more than about 1000 yuan, economic benefits, red mud consumption can reach 70 ~ 80%.
Experiment three: be that main raw material adds solidifying agent (cement), inorganic fibre produced by acidity quotient conditioning agent (ground silica) with red mud.
1, batching pressure ball workshop section:
Be that major ingredient adds solidifying agent (with normal silicate 325 or 425 cement), acidity quotient conditioning agent (with 325 ~ 500 order ground silicas, SiO2 content more than 95%) batching production inorganic fibre with red mud.Red mud (before batching, water content control is 10 ~ 14%), cement, ground silica are uniformly mixed in the ratio of 1:0.15:0.1 ~ 0.2, according to red mud water content, red mud is added water Homogeneous phase mixing after batching, after mixing, total water content controls 8 ~ 12%, and strong pressurizing is made ball lumpy material solidification nature and dried generation major ingredient.
Inorganic fibre batching is produced with red mud, solidifying agent (cement), acidity quotient conditioning agent (ground silica).
Table 8: allocation sheet
2, produce as a trial:
Table 8 " sample number 1,2,3 " batching ball block is selected to produce inorganic fibre respectively.By allocation sheet 8 " sample number 1,2,3 " each 11 tons of major ingredients, the block major ingredient of ball mixes by 3.5:1 with coke respectively, delivers to smelting furnace respectively, in smelting furnace, carries out high-temperature fusion, form fused solution respectively by transfer roller.Fused solution top is inorganic fibre solution, to whizzer, (whizzer adopts four to be rolled off scheming to inorganic fibre solution stream, its rotating speed is 4800 ~ 6000 revs/min), silk process is got rid of by whizzer, while throwing away filamentary fibers, to filamentary fibers silk high pressure atomized spray solid solution, (solid solution to be coordinated by certain weight ratio by uric acid resin adhesive liquid and water and forms, sodified water solution usage and inorganic fibre mix by certain weight high pressure atomized spray again), obtained inorganic fibre (the diameter 3 ~ 7um of inorganic fibre, length 10 ~ 20cm) is collected.Form series product.Fused solution bottom is iron liquation, and carry out proposing iron process, byproduct is iron.Temperature during smelting furnace high-temperature fusion is 1550 ~ 1700 DEG C (need add high pressure oxygen and aiding combustion).Present method adds solidifying agent cement: on the one hand, and cement can play the effect of solidifying agent, makes the block major ingredient hardness of ball reach requirement; On the other hand, the calcium in cement, element silicon play certain supplementary function to red mud.Present method adds acidity quotient conditioning agent ground silica: on the one hand, and the deficiency can supplementing silicone content in red mud further plays the effect of additive; On the other hand, the acidity quotient regulating effect of Dui Chan Pin ﹙ Wu machine Xian Wei ﹚ can be played; One side ground silica and fast without silica again, mainly in order to reduce the melt temperature in stove, reducing coke consumption, starting and reducing production cost.(when actual production, selecting " sample number 2 " batching ball block in allocation sheet 8).Being that major ingredient adds cement, ground silica is prepared burden with red mud produces inorganic fibre, and red mud consumption can reach 70 ~ 80%.The series product acidity quotient that final production goes out is 1.5 ~ 1.7.
Being that major ingredient adds solidifying agent (cement), acidity quotient conditioning agent (ground silica) is prepared burden 11 tons with red mud produces inorganic fine test products result.
Table 9: product table
3, economic benefit situation:
With the red mud block major ingredient of balling-up that is that major ingredient adds solidifying agent (cement), acidity quotient conditioning agent (ground silica) is prepared burden, the block major ingredient of ball, coke press 3.5:1 mixing, with 11 tons of ball block major ingredients and 3.2 tons of coke production inorganic fibres, when red mud disregards cost, add up to cost: vehicle, cement, ground silica, artificial, electricity, coke, Sweet natural gas, tenderizer, equipment amortization) and economic benefit.
Table 10: economic benefit table
4, brief summary:
Being that major ingredient adds cement, ground silica is prepared burden with red mud produces inorganic fibre, selects table 8 " sample number 1,2,3 " batching ball block to produce inorganic fibre respectively.With 11 tons of ball block major ingredients and 3.2 tons of coke production inorganic fibres, with same production line continuous seepage about 3 hours statistics, by verifying effect of the present invention, inorganic fibre 8.2 tons, output asperities iron clad 1 ton can be produced.The series product that inorganic fibre slag ball content≤5%, final production go out can reach rock wool level index product (acidity quotient is 1.6), starting material per ton can obtain gross profit more than about 1200 yuan, and economic benefits, red mud consumption can reach 70 ~ 80%.
Four, compare with advance of the present invention:
With unslaked lime, flyash, rock ballast, phosphorus slag, magnesium slag is prepared burden respectively with red mud respectively and is used red mud to be that major ingredient adds solidifying agent (cement), acidity quotient conditioning agent (ground silica) is prepared burden respectively, powerful compacting balling-up block major ingredient trial production inorganic fibre respectively, with 11 tons of ball blocks (or batching) major ingredient be raw material with about 3 tons of coke for fuel, with same production line continuous seepage about 3 hours, the inorganic fibre statistics of producing, add up to cost (vehicle, manually, electricity, coke, Sweet natural gas, tenderizer, equipment amortization etc.), quality product, output and economic benefits comparison.
Table 11: overall economic efficiency comparison sheet
Compared by overall economic efficiency comparison sheet 11, several embodiments that Zhuan Li ﹙ CN102001823A ﹚ file is announced, by testing, experiment two of the present invention, test several embodiments that three results announce than special sharp ﹙ CN102001823A ﹚ file and test a result, at red mud consumption, fibrous residue ball content, go out in cotton rate, fiber acidity quotient, by-product volume, product appearance, product volume, quality product, production unit cost, product cost, product profit etc. there is obvious advance.Utilize red mud for main material production inorganic fibre, by cost keeping, there is good economy.The consumption producing inorganic fibre red mud by this experiment two, three methods of testing is larger, and technical difficulty ratio is easier to realize, and thoroughly can reach the object of administering red mud.
In sum, with red mud be major ingredient add solidifying agent, acidity quotient conditioning agent produce inorganic fibre, technique is relatively simple, take full advantage of Si, Ca, Fe, Al, Na, Mg element resource in red mud, solidifying agent, acidity quotient conditioning agent, do not produce tailings, the leftover bits in production process can reuse, secondary pollution is not had to environment, red mud is administered thoroughly, achieves the comprehensive utilization of red mud, turn waste into wealth.Production cost is low, can realize large-scale industrial production, is thoroughly administering while red mud pollutes, can the inorganic fibre series product meeting national standard of production high added value, has fairly obvious economic benefit, social enviroment protection benefit.This project meets national industrial policies, meets national requirements for environmental protection.
Claims (10)
1. utilize red mud to produce the processing method of inorganic fibre, its processing step is:
(1) be that major ingredient adds cement with red mud, add water and be uniformly mixed, powerful compacting balling-up is block, naturally dries, solidify to form ball lumpy material;
(2) described ball lumpy material is prepared burden with basalt ore block, coke again, mixes, and forms semi-product material;
(3) described semi-product material carries out high-temperature fusion in smelting furnace, forms fused solution;
(4) fused solution top is inorganic fibre liquation, and inorganic fibre liquation gets rid of silk through whizzer, after solidification, forms inorganic fibre; Fused solution bottom is iron liquation, carries out proposing iron process.
2. the processing method utilizing red mud to produce inorganic fibre according to claim 1, is characterized in that: before described red mud batching, water content control is 10 ~ 14%; Red mud mixes with the weight ratio of cement by 1:0.15, and mixed total water content controls 8 ~ 12%; Described cement uses as solidifying agent.
3. the red mud that utilizes according to claim 1 and 2 produces the processing method of inorganic fibre, it is characterized in that: be mixed into the ball lumpy material of semi-product material, basalt ore block, coke prepare burden by the weight ratio of 3.5:0.1 ~ 0.2:1; Described basalt ore block uses as acidity quotient conditioning agent.
4. the processing method utilizing red mud to produce inorganic fibre according to claim 3, is characterized in that: described cement adopts 325 or 425 silicate cements, and basalt ore block specifications is about 8 × 10 × 12 ㎝.
5. the processing method utilizing red mud to produce inorganic fibre according to claim 4, is characterized in that: temperature during high-temperature fusion is 1400 ~ 1550 DEG C.
6. another kind utilizes red mud to produce the processing method of inorganic fibre, and its processing step is:
(1) be that major ingredient adds cement, ground silica with red mud, add water and be uniformly mixed, powerful compacting balling-up is block, naturally dries, solidify to form ball lumpy material;
(2) ball lumpy material is prepared burden with coke again, mixes, and forms semi-product material;
(3) described semi-product material carries out high-temperature fusion in smelting furnace, forms fused solution;
(4) fused solution top is inorganic fibre liquation, and inorganic fibre liquation gets rid of silk through whizzer, after solidification, forms inorganic fibre; Fused solution bottom is iron liquation, carries out proposing iron process.
7. the processing method utilizing red mud to produce inorganic fibre according to claim 6, is characterized in that: red mud mixes by the weight ratio of 1:0.15:0.1 ~ 0.2 with cement, ground silica, and mixed total water content controls 8 ~ 12%; Described cement uses as solidifying agent, and ground silica uses as acidity quotient conditioning agent.
8. the red mud that utilizes according to claim 6 or 7 produces the processing method of inorganic fibre, it is characterized in that: in described finished product materials, ball lumpy material and coke are prepared burden by the weight ratio of 3.5:1.
9. the processing method utilizing red mud to produce inorganic fibre according to claim 8, is characterized in that: described cement adopts 325 or 425 ordinary Portland cements, and ground silica specification is 325 ~ 500 orders.
10. the processing method utilizing red mud to produce inorganic fibre according to claim 9, is characterized in that: temperature during high-temperature fusion is 1550 ~ 1700 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710949843.XA CN107555777B (en) | 2015-10-13 | 2015-10-13 | Utilize the process of red mud production inorfil |
| CN201510668430.5A CN105271691B (en) | 2015-10-13 | 2015-10-13 | Utilize the process of red mud production inorfil |
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| CN201510668430.5A CN105271691B (en) | 2015-10-13 | 2015-10-13 | Utilize the process of red mud production inorfil |
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| CN105271691A true CN105271691A (en) | 2016-01-27 |
| CN105271691B CN105271691B (en) | 2017-12-29 |
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| CN106277807A (en) * | 2016-08-16 | 2017-01-04 | 崔师斌 | Rock wool heat-preservation material and preparation method thereof |
| CN106336200A (en) * | 2016-08-21 | 2017-01-18 | 长兴盟友耐火材料有限公司 | Inorganic fiber reinforced refractory material and preparation technology thereof |
| CN106673453A (en) * | 2016-12-19 | 2017-05-17 | 江苏省冶金设计院有限公司 | Utilization method of red mud slag |
| CN106698916A (en) * | 2016-12-19 | 2017-05-24 | 江苏省冶金设计院有限公司 | Method for preparing mineral fiber through red mud slag |
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| CN109970349A (en) * | 2019-04-24 | 2019-07-05 | 济南大学 | A kind of method that the trade waste that ferriferous oxide is modified prepares alkali-resistant glass fibre |
| CN110143761A (en) * | 2019-06-04 | 2019-08-20 | 程铃釜 | A kind of high-performance fiber and its preparation process containing charcoal |
| CN110330232A (en) * | 2019-06-19 | 2019-10-15 | 张勇 | A kind of process using red mud production inorfil |
| CN114573237A (en) * | 2022-03-21 | 2022-06-03 | 王进 | Comprehensive utilization method of red mud |
| CN114573237B (en) * | 2022-03-21 | 2024-02-23 | 王进 | Comprehensive utilization method of red mud |
| CN114873923A (en) * | 2022-03-28 | 2022-08-09 | 中铝山东有限公司 | Red mud-based heat insulation material and preparation method thereof |
| CN114873923B (en) * | 2022-03-28 | 2023-08-22 | 中铝山东有限公司 | Red mud-based heat insulation material and preparation method thereof |
| CN114804611A (en) * | 2022-05-27 | 2022-07-29 | 王进 | Method for producing fireproof black cotton by utilizing red mud |
| CN114804611B (en) * | 2022-05-27 | 2023-12-12 | 王进 | Method for producing fireproof black cotton by using red mud |
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| CN107555777A (en) | 2018-01-09 |
| CN105271691B (en) | 2017-12-29 |
| CN107555777B (en) | 2019-06-18 |
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