CN108929103A - It is a kind of using cyanidation tailings as foamed ceramic thermal insulation material of raw material and preparation method thereof - Google Patents
It is a kind of using cyanidation tailings as foamed ceramic thermal insulation material of raw material and preparation method thereof Download PDFInfo
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- CN108929103A CN108929103A CN201810640328.8A CN201810640328A CN108929103A CN 108929103 A CN108929103 A CN 108929103A CN 201810640328 A CN201810640328 A CN 201810640328A CN 108929103 A CN108929103 A CN 108929103A
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- foamed ceramic
- cyanidation tailings
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- 239000000919 ceramic Substances 0.000 title claims abstract description 27
- 239000012774 insulation material Substances 0.000 title claims abstract description 23
- 239000002994 raw material Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 32
- 239000004088 foaming agent Substances 0.000 claims abstract description 28
- 239000006260 foam Substances 0.000 claims abstract description 24
- 239000003381 stabilizer Substances 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 18
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 13
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 13
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical group [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 12
- 238000010792 warming Methods 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 239000005995 Aluminium silicate Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 235000012211 aluminium silicate Nutrition 0.000 claims description 6
- 229910001570 bauxite Inorganic materials 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 6
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000001095 magnesium carbonate Substances 0.000 claims description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 6
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 6
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 6
- 239000000395 magnesium oxide Substances 0.000 claims description 6
- 235000012245 magnesium oxide Nutrition 0.000 claims description 6
- 238000001694 spray drying Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 5
- 239000011819 refractory material Substances 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 238000009413 insulation Methods 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract description 5
- 230000003712 anti-aging effect Effects 0.000 abstract description 4
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005187 foaming Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000005192 partition Methods 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 description 14
- 239000010931 gold Substances 0.000 description 14
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 4
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 231100000004 severe toxicity Toxicity 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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Abstract
The invention belongs to metallurgical slag recovery technology fields more particularly to a kind of using cyanidation tailings as foamed ceramic thermal insulation material of raw material and preparation method thereof.The present invention mixes foam stabilizer, auxiliary material and foaming agent using cyanidation tailings as primary raw material outside, and through processes such as mixing, drying, high temperature foaming, foamed ceramic materials for wall is made；The foamed ceramic material for not only having digested a large amount of solid slags, and having prepared has the characteristics that lightweight, high-strength, corrosion-resistant, anti-aging, is a kind of heat preservation, waterproof, fire prevention, corrosion-resistant, anti-aging novel heat insulating wall material.Foamed ceramic of the invention is mainly used for exterior-wall heat insulation, self-insulation wall material, it may also be used for the fields such as heat insulation and water resistance layer of indoor partition, roof.
Description
Technical field
The invention belongs to metallurgical slag recovery technology field more particularly to it is a kind of using cyanidation tailings as raw material foaming pottery
Porcelain thermal insulation material and preparation method thereof.
Background technique
Cyanidation tailings are generated during gold smelting in Cyanide Process containing alkalinity, hypertoxic cyanide ion and again
The more metal waste residues of the terminal of metal component, ingredient see the table below:
* it [infuses]: Au, Ag unit g/t.
In the numerous methods and technique of gold smelting, cyaniding leaching proposes the main method that gold is world's gold smelting.
Extraction of gold by cyanidation technique is since application in 1887, since the rate of recovery is high, adaptable to ore, technological operation is simple, cost
It is low, avoid the advantages that gold mine conveyance loss and be widely used, by 2001,80% newly-built gold mine all used cyanogen in the world
Change Fa Tijin.China's gold output in 2009 is 313.9 tons, ranks the first in the world pan state within continuous 3 years.In China, cyaniding
Method is easy to operate with its, and expense is low and good mineral are selectively widely used in golden production.But cyaniding
The shortcomings that be also evident from, the use of hypertoxic cyanide causes to contain CN in gold-extracted tail slag-It severely exceeds, simple stockpiling is bound to
Contaminated soil and underground water.Extraction of gold by cyanidation process generates a large amount of cyanidation tailings, and granularity is superfine, viscosity is big, argillization phenomenon is tight
Weight, mineral composition are complicated, in addition to containing low-grade Au, Ag, also have containing a certain amount of Fe, S, Cu, Pb, Zn, Sb, As, S i etc.
Valence element and severe toxicity CN-And residual contamination medicament, be one kind have a large capacity and a wide range, high pollution but the higher smelting of comprehensive utilization value
Golden waste residue.
The existing processing mode of cyanidation tailings is that simple stockpiling or landfill, a large amount of valuable elements are wasted.By multielement
Although the cyanidation tailings of recovery processing also contain a large amount of low-grade sulfur and iron elements (general sulfur-bearing 20-30%, iron content 20-30%),
But because handling by multiple working procedure, argillization phenomenon aggravation, granularity attenuates (- 400 mesh contents are greater than 90%), aqueous
Amount up to 20%, viscosity increases, and filters pressing is difficult, contains severe toxicity CN-And residual contamination medicament, it is deposited directly as solid waste discharge
In serious environment hidden danger.Fine mineral self-assemble effect and a large amount of CN-Presence the inhibition of sulfur and iron elements floatability is made
With bringing very big difficulty to concentration and separation sulfur and iron elements.Domestic certain gold mining enterprises simply utilize this cyanidation tailings
Fluidized bed reactor making acid, since feed moisture content is big, viscosity is high, has to just be able to satisfy by original " shining mine " mode into furnace original
Expect to require, the fluctuation of raw material grade is big in addition, and on the one hand initiation acid making system operation stability is poor, utilization rate of waste heat is low and production
Low efficiency, the ferrous grade of another aspect relieving haperacidity slag can not directly be used in 30-40% as iron-smelting raw material, can only conduct
Cement raw material, digestion amount is extremely limited, and added value of product is low, these red scums can only heap abandon, stockpiling, economic benefit is poor.
In addition, the resources such as gold, silver valuable in waste residue, copper also waste completely.Therefore it researches and develops a kind of to containing a large amount of sulphur, iron, gold
The method that the cyanidation tailings of resource carry out high value added utilization has very profound significance and value.
Currently, light ceramics, mostly using high-quality shale as primary raw material, preparation process is raw material wet-mixing ball milling --- it is mixed
It closes distributed slurry spray drying --- raw material compression moulding --- and enters kiln firing, and using natural gas as fuel, lead to light ceramics
High production cost hinders it in the popularization and application of building trade.And foamed ceramic is a kind of porous pottery with hole of largely holding one's breath
Porcelain, and there is waterproof, the good characteristics such as non-ignitable, thermal coefficient is small, compression strength is high, resistant to chemical etching, thermal stability is good.
Therefore, the present invention provides a kind of using cyanidation tailings as foamed ceramic thermal insulation material of raw material and preparation method thereof.
Summary of the invention
The present invention in view of the deficiency of the prior art, provides a kind of using cyanidation tailings as the foamed ceramic of raw material
Thermal insulation material and preparation method thereof reduces its pollution to environment, improves utility value.
The technical scheme to solve the above technical problems is that a kind of using cyanidation tailings as the foamed ceramic of raw material
Thermal insulation material, which is characterized in that its component includes by weight percentage, cyanidation tailings 60-80%, foam stabilizer 4-10%, auxiliary
Help raw material 8-35.9% and foaming agent 0.1-2.0%.
Wherein, the moisture content of the cyanidation tailings is more than 25wt%, and fineness is lower than 250 mesh；
The foam stabilizer is magnesia, magnesite or talcum powder；
The auxiliary material is the mixing of one or more of bauxite, kaolin, gangue or flyash；
The foaming agent is the mixing of one or more of silicon carbide, carbon black or metallic aluminium powder.
Second object of the present invention is to provide a kind of using cyanidation tailings as the system of the foamed ceramic thermal insulation material of raw material
Preparation Method, comprising the following steps:
(1) foam stabilizer, auxiliary material and foaming agent are passed through into ball mill grinding to 250 mesh or less respectively；
(2) cyanidation tailings and the good foam stabilizer of step (1) grinding, auxiliary material, foaming agent are taken, according to cyanidation tailings 60-
80%, the weight percent mixing of foam stabilizer 4-10%, auxiliary material 8-35.9% and foaming agent 0.1-2.0%, puts into mud
Stirring pool is stirred, and is uniformly mixed, and mud is formed；
(3) mixing mud of step (2) is dried using spray drying tower, obtains dry mash；
(4) dry mash of step (3) is packed into framed, is sent into kiln, be warming up to 1150-1190 DEG C, keep the temperature 1-2h,
After cooling annealing, foamed ceramic thermal insulation material is made.
The beneficial effects of the present invention are: the present invention using cyanidation tailings as primary raw material, mix outside foam stabilizer, auxiliary material and
Foamed ceramic materials for wall is made through processes such as mixing, drying, high temperature foaming in foaming agent；It is useless a large amount of solids have not only been digested
Slag, and the foamed ceramic material prepared has the characteristics that lightweight, high-strength, corrosion-resistant, anti-aging is a kind of heat preservation, waterproof, prevents
Fiery, corrosion-resistant, anti-aging novel heat insulating wall material.Foamed ceramic of the invention is mainly used for exterior-wall heat insulation, self-insurance
Warm materials for wall, it may also be used for the fields such as heat insulation and water resistance layer of indoor partition, roof.
Based on the above technical solution, the present invention can also be improved as follows.
Further, in step (2), mixing time 12-48h；The moisture for controlling mud is 33-40wt%.
Further, in step (4), the framed refractory material that release agent is coated with for inner wall.
Further, the release agent is alumina powder；The refractory material is refractoriness not less than 1400 DEG C
Refractory material.
Further, in step (4), the kiln is tunnel oven, roller kilns or shuttle kiln.
Further, in step (4), temperature-rise period are as follows: be warming up to 1000 DEG C with the rate of 200-400 DEG C/h, then with 20-
The rate of 50 DEG C/h is warming up to 1050 DEG C, is finally warming up to 1150-1190 DEG C of blowing temperature with the rate of 200-400 DEG C/h.
Specific embodiment
Principles and features of the present invention are described below in conjunction with example, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment 1
A kind of foamed ceramic thermal insulation material containing cyanidation tailings, component includes cyanidation tailings by weight percentage
60%, foam stabilizer magnesia 4%, auxiliary material bauxite 35% and foaming agent silicon carbide 1.0%.
The preparation method of the above-mentioned foamed ceramic thermal insulation material containing cyanidation tailings, comprising the following steps:
(1) foam stabilizer magnesia, auxiliary material bauxite and foaming agent silicon carbide are passed through into ball mill grinding extremely respectively
Below 250 mesh；
(2) cyanidation tailings and the good foam stabilizer magnesia of step (1) grinding, auxiliary material bauxite, foaming agent carbonization are taken
Silicon, according to cyanidation tailings 60%, foam stabilizer magnesia 4%, auxiliary material bauxite 35% and foaming agent silicon carbide 1.0%
Weight percent mixing, investment slip agitating tank are stirred, are uniformly mixed, and form mud；
(3) mixing mud of step (2) is dried using spray drying tower, obtains dry mash；
(4) dry mash of step (3) is packed into framed, is sent into kiln, be warming up to 1150 DEG C, keep the temperature 2h, moved back through cooling
After fire, foamed ceramic thermal insulation material is made, performance test is shown in Table 1.
Embodiment 2
A kind of foamed ceramic thermal insulation material containing cyanidation tailings, component includes cyanidation tailings by weight percentage
80%, foam stabilizer magnesite 9.9%, auxiliary material gangue 10% and foaming agent metallic aluminium powder 0.1%.
The preparation method of the above-mentioned foamed ceramic thermal insulation material containing cyanidation tailings, comprising the following steps:
(1) foam stabilizer magnesite, auxiliary material gangue and foaming agent metallic aluminium powder are passed through into ball mill grinding extremely respectively
Below 250 mesh；
(2) cyanidation tailings and the good foam stabilizer magnesite of step (1) grinding, auxiliary material gangue, foaming agent metal are taken
Aluminium powder, according to cyanidation tailings 80%, foam stabilizer magnesite 9.9%, auxiliary material gangue 10% and foaming agent metallic aluminium powder
0.1% weight percent mixing, investment slip agitating tank are stirred, are uniformly mixed, and form mud；
(3) mixing mud of step (2) is dried using spray drying tower, obtains dry mash；
(4) dry mash of step (3) is packed into framed, is sent into kiln, be warming up to 1160 DEG C, 1.5h is kept the temperature, through cooling
After annealing, foamed ceramic thermal insulation material is made, performance test is shown in Table 1.
Embodiment 3
A kind of foamed ceramic thermal insulation material containing cyanidation tailings, component includes cyanidation tailings by weight percentage
70%, foam stabilizer talcum powder 5%, auxiliary material kaolin 10%, auxiliary material flyash 13%, foaming agent silicon carbide 1.0%
With foaming agent silicon carbide carbon black 1.0%.
The preparation method of the above-mentioned foamed ceramic thermal insulation material containing cyanidation tailings, comprising the following steps:
(1) by foam stabilizer talcum powder, auxiliary material kaolin, auxiliary material flyash, foaming agent silicon carbide and foaming agent
Silicon carbide carbon black passes through ball mill grinding to 250 mesh or less respectively；
(2) cyanidation tailings and the good foam stabilizer talcum powder of step (1) grinding, auxiliary material kaolin, auxiliary material powder are taken
Coal ash, foaming agent silicon carbide, foaming agent silicon carbide carbon black, according to cyanidation tailings 70%, foam stabilizer talcum powder 5%, auxiliary material
The weight of kaolin 10%, auxiliary material flyash 13%, foaming agent silicon carbide 1.0% and foaming agent silicon carbide carbon black 1.0%
Percentage mixing, investment slip agitating tank are stirred, are uniformly mixed, and form mud；
(3) mixing mud of step (2) is dried using spray drying tower, obtains dry mash；
(4) dry mash of step (3) is packed into framed, is sent into kiln, be warming up to 1190 DEG C, 1.0h is kept the temperature, through cooling
After annealing, foamed ceramic thermal insulation material is made, performance test is shown in Table 1.
Table 1
As can be seen from Table 1, foamed ceramic thermal insulation material of the invention have light weight, intensity height, good heat insulating,
The advantages such as water absorption rate is low.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of using cyanidation tailings as the foamed ceramic thermal insulation material of raw material, which is characterized in that its component is by weight percentage
Including cyanidation tailings 60-80%, foam stabilizer 4-10%, auxiliary material 8-35.9% and foaming agent 0.1-2.0%.
2. foamed ceramic thermal insulation material according to claim 1, which is characterized in that the moisture content of the cyanidation tailings is super
25wt% is crossed, fineness is lower than 250 mesh；
The foam stabilizer is magnesia, magnesite or talcum powder；
The auxiliary material is the mixing of one or more of bauxite, kaolin, gangue or flyash；
The foaming agent is the mixing of one or more of silicon carbide, carbon black or metallic aluminium powder.
3. using cyanidation tailings as the preparation method of the foamed ceramic thermal insulation material of raw material described in a kind of claim 1, feature exists
In, comprising the following steps:
(1) foam stabilizer, auxiliary material and foaming agent are passed through into ball mill grinding to 250 mesh or less respectively；
(2) cyanidation tailings and the good foam stabilizer of step (1) grinding, auxiliary material, foaming agent are taken, according to cyanidation tailings 60-80%,
The weight percent of foam stabilizer 4-10%, auxiliary material 8-35.9% and foaming agent 0.1-2.0% mix, and put into slip agitating tank
It is stirred, is uniformly mixed, form mud；
(3) mixing mud of step (2) is dried using spray drying tower, obtains dry mash；
(4) dry mash of step (3) is packed into framed, is sent into kiln, be warming up to 1150-1190 DEG C, 1-2h is kept the temperature, through cooling
After annealing, foamed ceramic thermal insulation material is made.
4. preparation method according to claim 3, which is characterized in that in step (2), mixing time 12-48h；Control
The moisture of mud is 33-40wt%.
5. preparation method according to claim 3, which is characterized in that in step (4), it is described it is framed be coated with for inner wall it is de-
The refractory material of mould agent.
6. preparation method according to claim 5, which is characterized in that the release agent is alumina powder；Described is resistance to
Fiery material is the refractory material that refractoriness is not less than 1400 DEG C.
7. preparation method according to claim 3, which is characterized in that in step (4), the kiln is tunnel oven, roller
Road kiln or shuttle kiln.
8. preparation method according to claim 3, which is characterized in that in step (4), temperature-rise period are as follows: with 200-400
DEG C/rate of h is warming up to 1000 DEG C, then is warming up to 1050 DEG C with the rate of 20-50 DEG C/h, finally with the speed of 200-400 DEG C/h
Rate is warming up to 1150-1190 DEG C of blowing temperature.
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| CN110041050A (en) * | 2019-04-27 | 2019-07-23 | 招远市招金金合科技有限公司 | A method of European chain tile is prepared using high silicon tailings |
| CN111470879A (en) * | 2020-03-24 | 2020-07-31 | 北京科技大学 | Preparation method of normal-temperature foamed high-temperature fired foamed ceramic |
| CN112279677A (en) * | 2020-12-30 | 2021-01-29 | 科达制造股份有限公司 | High-doping-amount municipal sludge foamed ceramic and preparation method thereof |
| CN113480324A (en) * | 2021-07-27 | 2021-10-08 | 辽宁工业大学 | Foamed ceramic prepared from fly ash and metallurgical waste residues and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110041050A (en) * | 2019-04-27 | 2019-07-23 | 招远市招金金合科技有限公司 | A method of European chain tile is prepared using high silicon tailings |
| CN111470879A (en) * | 2020-03-24 | 2020-07-31 | 北京科技大学 | Preparation method of normal-temperature foamed high-temperature fired foamed ceramic |
| CN112279677A (en) * | 2020-12-30 | 2021-01-29 | 科达制造股份有限公司 | High-doping-amount municipal sludge foamed ceramic and preparation method thereof |
| CN113480324A (en) * | 2021-07-27 | 2021-10-08 | 辽宁工业大学 | Foamed ceramic prepared from fly ash and metallurgical waste residues and preparation method thereof |
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