CN107354297B - A kind of compound binding agent and the powder pelletizing obtained by the compound binding agent - Google Patents
A kind of compound binding agent and the powder pelletizing obtained by the compound binding agent Download PDFInfo
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- CN107354297B CN107354297B CN201610301864.6A CN201610301864A CN107354297B CN 107354297 B CN107354297 B CN 107354297B CN 201610301864 A CN201610301864 A CN 201610301864A CN 107354297 B CN107354297 B CN 107354297B
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- pelletizing
- powder
- magnesia
- binding agent
- compound binding
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- 238000005453 pelletization Methods 0.000 title claims abstract description 118
- 239000000843 powder Substances 0.000 title claims abstract description 96
- 239000011230 binding agent Substances 0.000 title claims abstract description 79
- 150000001875 compounds Chemical class 0.000 title claims abstract description 55
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 224
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 123
- 238000002360 preparation method Methods 0.000 claims abstract description 40
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 24
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 24
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 24
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 24
- 229920002261 Corn starch Polymers 0.000 claims abstract description 23
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000008120 corn starch Substances 0.000 claims abstract description 23
- 229940099112 cornstarch Drugs 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 23
- 239000008188 pellet Substances 0.000 claims abstract description 23
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 23
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 23
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000006188 syrup Substances 0.000 claims abstract description 22
- 235000020357 syrup Nutrition 0.000 claims abstract description 22
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 18
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 18
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 18
- 239000004021 humic acid Substances 0.000 claims abstract description 18
- 235000019795 sodium metasilicate Nutrition 0.000 claims abstract description 18
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 18
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 15
- 238000005245 sintering Methods 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 5
- 239000000654 additive Substances 0.000 claims description 22
- 230000000996 additive effect Effects 0.000 claims description 22
- -1 calcium hydroxide compound Chemical class 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 5
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims 1
- 229920006316 polyvinylpyrrolidine Polymers 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- 229920000036 polyvinylpyrrolidone Polymers 0.000 abstract description 17
- 239000001267 polyvinylpyrrolidone Substances 0.000 abstract description 17
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 abstract description 17
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 abstract description 12
- 239000001095 magnesium carbonate Substances 0.000 abstract description 11
- 235000014380 magnesium carbonate Nutrition 0.000 abstract description 11
- 229910000021 magnesium carbonate Inorganic materials 0.000 abstract description 11
- 238000010309 melting process Methods 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 8
- 239000011777 magnesium Substances 0.000 description 8
- 229910052749 magnesium Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 230000004520 agglutination Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000010792 warming Methods 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 description 3
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 229940068041 phytic acid Drugs 0.000 description 3
- 235000002949 phytic acid Nutrition 0.000 description 3
- 239000000467 phytic acid Substances 0.000 description 3
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 3
- ORVGYTXFUWTWDM-UHFFFAOYSA-N silicic acid;sodium Chemical compound [Na].O[Si](O)(O)O ORVGYTXFUWTWDM-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 241001131796 Botaurus stellaris Species 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- YGJZDMFVIMWCHL-UHFFFAOYSA-N [Na].[Mg].[K] Chemical compound [Na].[Mg].[K] YGJZDMFVIMWCHL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011822 basic refractory Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
A kind of compound binding agent and the powder pelletizing obtained by the compound binding agent.One kind being used to prepare the binder and its pelletizing of powder pelletizing, especially magnesia pelletizing.It include: to prepare the compound binding agent containing sodium carboxymethylcellulose, humic acid, cornstarch, acrylic resin, syrup, polyvinylpyrrolidone, polyacrylamide, sodium metasilicate and calcium hydroxide, magnesia powder powder stock is mixed with compound binding agent, obtain mixture, then the mixture is obtained into finished pellet after pressure ball, drying, sintering, the magnesia powder powder stock is high-purity magnesium oxide, and MgO chemical component is greater than 92wt%.The powder pelletizing or magnesia pellet strength that compound binding agent according to the present invention obtains are high, do not allow in electric melting process easily broken, and love preparation process is simple, may be directly applied to industrial mass production, and powder is avoided directly to enter the deterioration of the working of a furnace caused by furnace and pollution on the environment.The magnesia pelletizing of binder preparation of the present invention can be directly used for preparing fused magnesite.
Description
Technical field
The present invention relates to a kind of compound binding agents, in particular it relates to which one kind is used to prepare powder pelletizing (mine)
Compound binding agent and the powder pelletizing obtained by the compound binding agent, more particularly it relates to which one kind is used to prepare oxidation
The compound binding agent of magnesium pelletizing and the magnesia pelletizing obtained by the compound binding agent.The powder pellet strength is high, in electric smelting
Do not allow in the process it is easily broken, and like preparation process it is simple, may be directly applied to industrial mass production, powder avoided directly to enter furnace
Caused by the working of a furnace deteriorate and pollution on the environment.
Background technique
Basic material of the fused magnesite as production basic refractory, has good high-temperature stability, corrosion resistance
And heat-conductive characteristic, it is widely used in industries such as steel, building materials, glass.
In general, the production of fused magnesite can be obtained using the direct electrically smelting of giobertite raw material, it can will also contain magnesium raw material and first make
It is made at magnesium oxide powder, then by the magnesium oxide powder in electric arc furnaces high temperature melting recrystallization.
By the magnesium oxide powder in electric arc furnaces high temperature melting recrystallization be made fused magnesite production process in, palpus
Magnesia pelletizing is made in the magnesium oxide powder, then the magnesia pelletizing is directly prepared into magnesia.
It is to add raw materials into additive, compound viscous in general, the preparation method of the powder pelletizing including magnesia pelletizing
The ingredients such as agent are tied, are prepared into the process of pelletizing by equipment such as ball press, ball press, fluidized beds after mixing.The powder
Pelletizing preparation method has been widely used in all various aspects such as pharmacy, coal, bio-fuel, metallurgy.
However, pelletizing is easily broken in electric melting process, the material of pelletizing according to the preparation method of previous powder pelletizing
Density and intensity are to be improved, and pellet characteristics are to be improved can improve the magnesia performance finally prepared.In addition, in addition, previous
Pelletizing process complexity is prepared, charging is inconvenient, it is difficult to directly apply to industrial mass production, and be difficult to avoid that powder directly enters furnace
Caused by the working of a furnace deteriorate, it is difficult to avoid dust from polluting the environment.
There are briquetting pressure, moisture, compound binding agent, partial size, drying mode etc. all this is because influencing powder pellet characteristics
Multifactor, wherein compound binding agent is its principal element.
So far, both at home and abroad to powder pelletizing, the correlative study of especially magnesia pelletizing preparation is rarely reported, lacks
To powder pelletizing, the especially correlative study of the compound binding agent of magnesia pelletizing and its mechanism of action, also lack mature benefit
Magnesia pelletizing is prepared with magnesium oxide powder, then the magnesia pelletizing is directly prepared into the process route of magnesia.
For this purpose, this neighborhood needs one kind to be used to prepare the compound binding agent of powder pelletizing (mine) and obtained by the compound binding agent
The powder pelletizing arrived, especially a kind of compound binding agent for being used to prepare magnesia pelletizing and the oxygen obtained by the compound binding agent
Change the preparation method of magnesium pelletizing and the magnesia pelletizing so that the powder pelletizing or magnesia pelletizing in electric melting process not
It is easily broken, the material density and intensity of the powder pelletizing or magnesia ball improve, and pellet characteristics improve final can improve
The magnesia performance of preparation.And requiring the preparation process of the powder pelletizing or magnesia ball pelletizing simple, charging is convenient, Ke Yizhi
It scoops out for industrial mass production, avoiding powder from directly entering, the working of a furnace caused by furnace deteriorates and dust pollutes the environment.
Summary of the invention
For solve the problems, such as it is existing lack to magnesia pelletizing preparation process route study, overcome the shortage of prior art, this
The purpose of invention is, the powder pelletizing for providing a kind of compound binding agent and being obtained by the compound binding agent；
The purpose of the present invention is again, provides a kind of compound binding agent for being used to prepare magnesia pelletizing and compound viscous by this
The magnesia pelletizing that knot agent obtains；
The present invention also aims to provide a kind of magnesia pelletizing and its prepare magnesia using above-mentioned binder
The method of pelletizing.
The powder pelletizing or magnesia pellet strength that compound binding agent according to the present invention obtains are high, in electric melting process not
It is easily broken, and likes that preparation process is simple, may be directly applied to industrial mass production, powder is avoided directly to enter furnace caused by furnace
Condition deteriorates and pollution on the environment.
The magnesia pelletizing of binder preparation of the present invention can be directly used for preparing fused magnesite.
In order to achieve the above objectives, the technical solution of compound binding agent of the invention is as follows:
A kind of compound binding agent is prepared for powder pelletizing, which is characterized in that
The compound binding agent is by compound compound of sodium carboxymethylcellulose, polyacrylamide and sodium metasilicate and calcium hydroxide
Binder, wherein
Pelletizing powder based on 100 parts by weight, the sodium carboxymethylcellulose, polyacrylamide and silicic acid sodium content are such as
Under:
Sodium carboxymethylcellulose: 0.1-1.5wt%,
Polyacrylamide: 0.1-2.0wt%,
Sodium metasilicate: 0.2-3.0wt%,
Calcium hydroxide: 0.2-4.0wt%.
A kind of compound binding agent according to the present invention, which is characterized in that
Pelletizing powder based on 100 parts by weight, the sodium carboxymethylcellulose, polyacrylamide and silicic acid sodium content are such as
Under:
Sodium carboxymethylcellulose: 0.2-0.6wt%,
Polyacrylamide: 0.2-0.6wt%,
Sodium metasilicate: 0.4-0.8wt%.
A kind of compound binding agent according to the present invention, which is characterized in that
The compound binding agent further includes cornstarch, humic acid and acrylic resin, the pelletizing powder based on 100 parts by weight
End, the cornstarch, humic acid and acrylic resin content are as follows:
Cornstarch: 0.2-3.5wt%,
Humic acid: 0.2-4.0wt%
Acrylic resin: 0.2-5.0wt%.
A kind of compound binding agent according to the present invention, which is characterized in that
The cornstarch of the compound binding agent, humic acid and acrylic resin content are as follows:
Cornstarch: 0.3-0.6wt%,
Humic acid: 0.3-0.8%wt%,
Acrylic resin: 0.3-0.8wt%.
A kind of compound binding agent according to the present invention, which is characterized in that
The compound binding agent further includes syrup, polyvinylpyrrolidone, and the pelletizing powder based on 100 parts by weight is described
Syrup, polyvinyl pyrrolidone content are as follows:
Syrup: 0.2-4.0wt%,
Polyvinylpyrrolidone: 0.2-5.0wt%.
A kind of compound binding agent according to the present invention, which is characterized in that
The syrup, polyvinyl pyrrolidone content are as follows:
Syrup: 0.2-0.8wt%,
Polyvinylpyrrolidone: 0.2-0.6wt%.
A kind of compound binding agent according to the present invention, which is characterized in that
Niter ash content: 0.4-0.8wt%.
A kind of compound binding agent according to the present invention, which is characterized in that
The compound binding agent is used for the preparation of magnesia pelletizing.
The present invention provides a kind of powder pelletizing again, which is characterized in that
Pelletizing powder is added after above-mentioned binder is uniformly mixed and obtains after pressure ball, drying, sintering by powder pelletizing system
To finished powder pelletizing, the powder pelletizing value following ranges: Φ 20 × 10mm-, 50 × 32mm of Φ, specifically Φ 20 ×
10mm、Φ25×13mm、Φ30×15mm、Φ35×17mm、Φ40×22mm、Φ50×32mm。
According to the present invention, powder size range: less than 30 μm.
The present invention provides a kind of magnesia pelletizing again, which is characterized in that
Magnesium oxide powder is added after above-mentioned binder is uniformly mixed through pressure ball, drying, sintering for magnesia pelletizing system
After obtain finished pellet, the magnesia powder powder stock is high-purity magnesium oxide, and the magnesia pelletizing is the ball of 30 × 15mm of Φ
Group, MgO chemical component are greater than 92wt%.
According to the present invention, magnesium oxide powder particle size range: less than 30 μm.
A kind of magnesia pelletizing of the invention, which is characterized in that
Compression strength reaches 780N/ or more to the magnesia pelletizing after sintering.
The present invention provides a kind of manufacturing method of magnesia pelletizing again, and magnesia powder powder stock is mixed with compound binding agent
It closes, obtains mixture, the mixture is then obtained into finished pellet after pressure ball, drying, sintering, which is characterized in that
The compound binding agent is by compound compound of sodium carboxymethylcellulose, polyacrylamide and sodium metasilicate and calcium hydroxide
Binder, the magnesia powder powder stock are high-purity magnesium oxide, and MgO chemical component is greater than 92wt%,
Wherein,
Pelletizing powder based on 100 parts by weight, the sodium carboxymethylcellulose, polyacrylamide and silicic acid sodium content are such as
Under:
Sodium carboxymethylcellulose: 0.1-1.5wt%,
Polyacrylamide: 0.1-2.0wt%,
Sodium metasilicate: 0.2-3.0wt%,
Calcium hydroxide: 0.2-4.0wt%.
The manufacturing method of a kind of magnesia pelletizing according to the present invention, which is characterized in that
Magnesia pelletizing powder based on 100 parts by weight, the sodium carboxymethylcellulose, polyacrylamide and sodium metasilicate contain
It measures as follows:
Sodium carboxymethylcellulose: 0.2-0.6wt%,
Polyacrylamide: 0.2-0.6wt%,
Sodium metasilicate: 0.4-0.8wt%.
The manufacturing method of a kind of magnesia pelletizing according to the present invention, which is characterized in that
The compound binding agent further includes cornstarch, humic acid and acrylic resin, the pelletizing powder based on 100 parts by weight
End, the cornstarch, humic acid and acrylic resin content are as follows:
Cornstarch: 0.2-3.5wt%,
Humic acid: 0.2-4.0wt%
Acrylic resin: 0.2-5.0wt%.
The manufacturing method of a kind of magnesia pelletizing according to the present invention, which is characterized in that
The cornstarch of the compound binding agent, humic acid and acrylic resin content are as follows:
Cornstarch: 0.3-0.6wt%,
Humic acid: 0.3-0.8%wt%,
Acrylic resin: 0.3-0.8wt%.
The manufacturing method of a kind of magnesia pelletizing according to the present invention, which is characterized in that
The compound binding agent further includes syrup, polyvinylpyrrolidone, and the pelletizing powder based on 100 parts by weight is described
Syrup, polyvinyl pyrrolidone content are as follows:
Syrup: 0.2-4.0wt%,
Polyvinylpyrrolidone: 0.2-5.0wt%.
The manufacturing method of a kind of magnesia pelletizing according to the present invention, which is characterized in that
The syrup, polyvinyl pyrrolidone content are as follows:
Syrup: 0.2-0.8wt%,
Polyvinylpyrrolidone: 0.2-0.6wt%.
The manufacturing method of a kind of magnesia pelletizing according to the present invention, which is characterized in that
The additive amount of the calcium hydroxide is 0.4-0.8wt%.
The manufacturing method of a kind of magnesia pelletizing according to the present invention, which is characterized in that
The magnesia extracts from the magnesium mine in Qinghai Chaerhan salt lakes brine.
Qinghai Chaerhan salt lakes are richly stored with magnesium resource, and the high-purity magnesium oxide therefrom extracted can be used as preparation electric smelting
The raw material of magnesia, manufactured magnesia pelletizing is obtained as the presoma for preparing fused magnesite, then through electrically smelting after repressed balling-up
Fused magnesite.
According to the present invention, described with sodium carboxymethylcellulose, humic acid, cornstarch, acrylic resin, syrup, poly- second
On the one hand whereabouts that alkene pyrrolidone, polyacrylamide, sodium metasilicate and the compound binding agent of calcium hydroxide preparation can improve green-ball is strong
Degree, compression strength, promote the molding of pelletizing；On the one hand hot agglomerate intensity can be improved, meeting the later period prepares the strong of fused magnesite
Degree requires.
The preparation method of a kind of magnesia pelletizing according to the present invention, it is characterised in that:
The condition of the pressure ball includes: that water additive amount is 7-13wt%, preferably 8-12wt%.
The preparation method of a kind of magnesia pelletizing according to the present invention, it is characterised in that:
The briquetting pressure of the pressure ball is 5-30MPa, and the drying temperature is 100-150 DEG C, and drying time: 5-7 is small
When.
Ingredient is put into the ball press that die size is 30 × 15mm of Φ, adjusting briquetting pressure is 5-30MPa, by ingredient
Briquetting obtains the pelletizing of 30 × 15mm of Φ.
The drying: pelletizing is put into the baking oven that temperature is 100-150 DEG C, is dried 5-7 hours, takes out, is cooled to room
Temperature.
The preparation method of a kind of magnesia pelletizing according to the present invention, it is characterised in that:
The sintering condition are as follows: pelletizing is placed in corundum crucible, corundum crucible is put into temperature programming furnace and is sintered, institute
Stating sintering temperature is 1000-1300 DEG C, time 10-30min.
Compared with prior art, the positive effect of the present invention is:
(1) process route of magnesia pelletizing preparation is developed
Currently, it is more to the research of pelletizing method, but lack the research of the process route to magnesia pelletizing, the present invention provides
One prepares the process route of magnesia pelletizing, can be directly used for preparing fused magnesite, while meeting intensity requirement, in electricity
It is not broken up during molten.
(2) simple process
It is equipped with material using pelletizing method, improves material density and intensity, improves the performance of pelletizing so that final preparation can be improved
Magnesia performance；It is carried out directly in ball press in addition, this powder prepares pelletizing, simple process can directly apply to industry
Large-scale production has wide industrial prospect.
(3) environment is protected
Pelletizing is prepared into using the magnesia that Qinghai Chaerhan salt lakes magnesium resource extracts and carries out electric smelting again, can be avoided powder
Material directly enters the deterioration of the working of a furnace caused by furnace, and charging is convenient, avoids dust from polluting the environment, while can also save raw material.
Detailed description of the invention
Fig. 1 is the method flow diagram for preparing magnesia pelletizing of the invention.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is only used for describing and explaining invention, is not intended to restrict the invention.
Contain sodium carboxymethylcellulose, humic acid, cornstarch, acrylic resin, syrup, polyethylene pyrrole firstly, preparing
Pyrrolidone, polyacrylamide, sodium metasilicate and calcium hydroxide compound binding agent, magnesia powder powder stock is mixed with compound binding agent
It closes, obtains mixture, the mixture is then obtained into finished pellet after pressure ball, drying, sintering.
The magnesia powder powder stock is high-purity magnesium oxide, and MgO chemical component is greater than 92wt%；The carboxymethyl cellulose
The additive amount of plain sodium is 0.2-0.6wt%, and the additive amount of humic acid is 0.3-0.8wt%, and the additive amount of cornstarch is 0.3-
0.6wt%, the additive amount of acrylic resin are 0.3-0.8wt%, and the additive amount of syrup is 0.2-0.8wt%, polyvinyl pyrrole
The additive amount of alkanone is 0.2-0.6wt%, and the additive amount of polyacrylamide is 0.2-0.6wt%, and the additive amount of sodium metasilicate is
0.4-0.8wt%, the additive amount of calcium hydroxide are 0.4-0.8wt%.The maturing temperature is 1000-1300 DEG C, time 10-
30min。
According to the present invention, sodium carboxymethylcellulose, humic acid, cornstarch, acrylic resin, syrup, poly- second will be contained
Alkene pyrrolidone, polyacrylamide, sodium metasilicate and calcium hydroxide compound binding agent prepared in advance with water, relative to 100 weight
The magnesium oxide powder of part, the moisture are 7-13 parts by weight, preferably 8-12 parts by weight.In the present invention, the water addition
The weight for measuring water during referring to pressure ball accounts for the weight of whole pressure ball materials (including raw materials of magnesium oxide, compound binding agent and water)
Percentage.The mixing can carry out on batch mixer or damp mill, so that magnesium oxide powder is uniformly mixed with compound binding agent,
Obtain mixture.
Relative to the magnesium oxide powder of 100 parts by weight, the additive amount of the sodium carboxymethylcellulose is 0.2-0.6 weight
Part is measured, the dosage of humic acid is 0.3-0.8 parts by weight, and the dosage of cornstarch is 0.3-0.6 parts by weight, the use of acrylic resin
Amount is 0.3-0.8 parts by weight, and the dosage of syrup is 0.2-0.8 parts by weight, and the dosage of polyvinylpyrrolidone is 0.2-0.6 weight
Part, the dosage of polyacrylamide is 0.2-0.6 parts by weight, and the dosage of sodium metasilicate is 0.4-0.8 parts by weight, and the dosage of calcium hydroxide is
0.4-0.8 parts by weight.
In the present embodiment, prepared by the pelletizing of mixed mixture carried out in ball press, the mold of the ball press
Having a size of 30 × 15mm of Φ (ball-and-socket shape), briquetting pressure 5-30MPa.
Preparation method according to the present invention, the green-ball need to be dried before sintering, so that the green-ball energy
The temperature stress and drop resistant ability being then sintered are born, enough to avoid the destruction of pelletizing structure.The drying carries out in an oven,
Drying temperature is 100-150 DEG C, drying time 5-7h.
Preparation method according to the present invention, to make magnesia crystallization promote grain growth.In the present invention, the sintering temperature
It is 1000-1300 DEG C, time 10-30min can make magnesia pelletizing have higher intensity.
The invention will be further described with reference to embodiments, but the scope of the present invention is not limited in following implementation
Example.In the examples below, raw materials of magnesium oxide extracts from Qinghai Chaerhan salt lakes magnesium resource, and wherein content of MgO is higher than 92%.
Embodiment 1
The present embodiment is for illustrating magnesia pellet binder and its pelletizing preparation method of the invention.
The magnesia purity of magnesia powder powder stock used is the MgO of 92.5wt%, rotten by sodium carboxymethylcellulose 20g
Phytic acid 30g, cornstarch 30g, acrylic resin 30g, syrup 20g, polyvinylpyrrolidone 20g, polyacrylamide 20g, silicon
Mixture is mixed to get with 8.8kg after the water preparation agglutination binder of sour sodium 40g, calcium hydroxide 40g and 0.9kg.
The mixture is poured into ball press, using ball press (briquetting pressure 10MPa) pressure ball, obtain having a size of Φ 30 ×
The green pellets of 15mm.Then in an oven by the green-ball, drying temperature is under 100 DEG C, and dry 5h obtains dry bulb group.By dry bulb
Group is placed in temperature programming furnace, is warming up to 1100 DEG C, constant temperature 10min with the speed of 4 DEG C/min, after reaction natural cooling,
Obtain agglomerate.The parameters such as the intensity of the pelletizing are as shown in table 1.
Embodiment 2
The present embodiment is for illustrating magnesia pellet binder and its pelletizing preparation method of the invention.
The magnesia purity of magnesia powder powder stock used is the MgO of 94.4wt%, rotten by sodium carboxymethylcellulose 30g
Phytic acid 40g, cornstarch 40g, acrylic resin 30g, syrup 40g, polyvinylpyrrolidone 30 g, polyacrylamide 35g, silicon
Mixture is mixed to get with 8.7kg after the water preparation agglutination binder of sour sodium 50g, calcium hydroxide 45g and 1.0kg.
The mixture is poured into ball press, using ball press (briquetting pressure 15MPa) pressure ball, obtain having a size of Φ 30 ×
The green pellets of 15mm.Then in an oven by the green-ball, drying temperature is under 100 DEG C, and dry 5h obtains dry bulb group.By dry bulb
Group is placed in temperature programming furnace, is warming up to 1200 DEG C, constant temperature 20min with the speed of 4 DEG C/min, after reaction natural cooling,
Obtain agglomerate.The parameters such as the intensity of the pelletizing are as shown in table 1.
Embodiment 3
The present embodiment is for illustrating magnesia pellet binder and its pelletizing preparation method of the invention.
The magnesia purity of magnesia powder powder stock used is the MgO of 97.5wt%, rotten by sodium carboxymethylcellulose 45g
Phytic acid 50g, cornstarch 45g, acrylic resin 50g, syrup 50g, polyvinylpyrrolidone 45g, polyacrylamide 40g, silicon
Mixture is mixed to get with 8.5kg after the water preparation agglutination binder of sour sodium 55g, calcium hydroxide 50g and 1.1kg.
The mixture is poured into ball press, using ball press (briquetting pressure 25MPa) pressure ball, obtain having a size of Φ 30 ×
The green pellets of 15mm.Then in an oven by the green-ball, drying temperature is under 100 DEG C, and dry 5h obtains dry bulb group.By dry bulb
Group is placed in temperature programming furnace, is warming up to 1250 DEG C, constant temperature 25min with the speed of 4 DEG C/min, after reaction natural cooling,
Obtain agglomerate.The parameters such as the intensity of the pelletizing are as shown in table 1.
Table 1
Embodiment 4
The magnesia purity of magnesia powder powder stock used is the MgO of 93wt%, and by sodium carboxymethylcellulose 25g, corruption is planted
Sour 35g, cornstarch 30g, acrylic resin 30g, polyacrylamide 30g, sodium metasilicate 40g, the water of calcium hydroxide 40g and 0.9kg
Mixture is mixed to get with 8.8kg magnesium oxide powder after preparation agglutination binder.
The mixture is poured into ball press, using ball press (briquetting pressure 10MPa) pressure ball, obtain having a size of Φ 30 ×
The green pellets of 15mm.Then in an oven by the green-ball, drying temperature is under 100 DEG C, and dry 5h obtains dry bulb group.By dry bulb
Group is placed in temperature programming furnace, is warming up to 1150 DEG C, constant temperature 10min with the speed of 4 DEG C/min, after reaction natural cooling,
Obtain agglomerate.The parameters such as the intensity of the pelletizing are as shown in table 2.
Embodiment 5
The present embodiment is for illustrating magnesia pellet binder and its pelletizing preparation method of the invention.
The magnesia purity of magnesia powder powder stock used is the MgO of 94wt%, and by sodium carboxymethylcellulose 30g, corruption is planted
Sour 40g, acrylic resin 30g, syrup 40g, polyvinylpyrrolidone 30 g, polyacrylamide 40g, sodium metasilicate 50g, with 1.0kg
Water prepare agglutination binder after with 8.7kg magnesium oxide powder be mixed to get mixture.
The mixture is poured into ball press, using ball press (briquetting pressure 15MPa) pressure ball, obtain having a size of Φ 30 ×
The green pellets of 15mm.Then in an oven by the green-ball, drying temperature is under 100 DEG C, and dry 5h obtains dry bulb group.By dry bulb
Group is placed in temperature programming furnace, is warming up to 1200 DEG C, constant temperature 20min with the speed of 4 DEG C/min, after reaction natural cooling,
Obtain agglomerate.The parameters such as the intensity of the pelletizing are as shown in table 2.
Embodiment 6
The present embodiment is for illustrating magnesia pellet binder and its pelletizing preparation method of the invention.
The magnesia purity of magnesia powder powder stock used is the MgO of 97.5wt%, rotten by sodium carboxymethylcellulose 45g
Cornstarch 45g, acrylic resin 50g, polyvinylpyrrolidone 40 g, polyacrylamide 40g, sodium metasilicate 60g, calcium hydroxide 50g
Mixture is mixed to get with 8.6kg magnesium oxide powder with after the water preparation agglutination binder of 1.1kg.
The mixture is poured into ball press, using ball press (briquetting pressure 25MPa) pressure ball, obtain having a size of Φ 30 ×
The green pellets of 15mm.Then in an oven by the green-ball, drying temperature is under 100 DEG C, and dry 5h obtains dry bulb group.By dry bulb
Group is placed in temperature programming furnace, is warming up to 1250 DEG C, constant temperature 25min with the speed of 4 DEG C/min, after reaction natural cooling,
Obtain agglomerate.The parameters such as the intensity of the pelletizing are as shown in table 2.
Table 2
Magnesia is mixed with prepared compound binding agent in the present invention and is prepared into magnesia ball after ball press pressure ball
Group, compression strength reaches 780N/ or more to the pelletizing of preparation after sintering, and compression strength is high, the compound binding agent that pressure ball uses
It is made of organic binder and inorganic binder, after the sintering less residue, pelletizing obtained can be directly used for electric-melting magnesium
The preparation of sand meets intensity requirement when fused magnesite preparation, has wide industrial prospect.
Qinghai Chaerhan salt lakes are the maximum chloride type sodium potassium magnesium salt deposits in China, with the development and utilization of potassium resource,
The a large amount of magnesium chloride of by-product is based on its resources characteristic, relies on magnesia to prepare magnesia technique, extracts using from salt lake bittern
High-purity magnesium oxide, develop practical technique, to expand magnesia preparation research, promote comprehensive utilization of resources be of great significance.
The powder pelletizing or magnesia pellet strength that compound binding agent according to the present invention obtains are high, in electric melting process not
It is easily broken, and likes that preparation process is simple, may be directly applied to industrial mass production, powder is avoided directly to enter furnace caused by furnace
Condition deteriorates and pollution on the environment.
The magnesia pelletizing of binder preparation of the present invention can be directly used for preparing fused magnesite.
Claims (3)
1. a kind of powder pelletizing using compound binding agent, which is characterized in that
Pelletizing powder is added after binder is uniformly mixed and obtains finished powder after pressure ball, drying, sintering by powder pelletizing system
Last pelletizing, the powder pelletizing value following ranges: 50 × 32mm of Φ 20 × 10mm- Φ；
It is specific the preparation method comprises the following steps:
Contain sodium carboxymethylcellulose, humic acid, cornstarch, acrylic resin, syrup, polyvinylpyrrolidine firstly, preparing
Ketone, polyacrylamide, sodium metasilicate and calcium hydroxide compound binding agent, magnesia powder powder stock is mixed with compound binding agent, is obtained
To mixture, the mixture is then obtained into finished pellet after pressure ball, drying, sintering；
The magnesia powder powder stock is high-purity magnesium oxide, and MgO chemical component is greater than 92wt%；The sodium carboxymethylcellulose
Additive amount be 0.2-0.6wt%, the additive amount of humic acid is 0.3-0.8wt%, and the additive amount of cornstarch is 0.3-
0.6wt%, the additive amount of acrylic resin are 0.3-0.8wt%, and the additive amount of syrup is 0.2-0.8wt%, polyvinyl pyrrole
The additive amount of alkanone is 0.2-0.6wt%, and the additive amount of polyacrylamide is 0.2-0.6wt%, and the additive amount of sodium metasilicate is
0.4-0.8wt%, the additive amount of calcium hydroxide are 0.4-0.8wt%；
Dry bulb group is placed in temperature programming furnace, is heated up with the speed of 4 DEG C/min；Maturing temperature is 1000-1300 DEG C, and the time is
10-30min；
The drying carries out in an oven, and drying temperature is 100-150 DEG C, drying time 5-7h.
2. a kind of powder pelletizing as described in claim 1, which is characterized in that
The powder pelletizing value be specifically 20 × 10mm of Φ, 25 × 13mm of Φ, 30 × 15mm of Φ, 35 × 17mm of Φ, Φ 40 ×
22mm、Φ50×32mm。
3. a kind of powder pelletizing as described in claim 1, which is characterized in that
Compression strength reaches 780N/ or more to the pelletizing after sintering.
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| CN112430741A (en) * | 2020-12-01 | 2021-03-02 | 唐山华纤科技有限公司 | Method for recovering zinc oxide from blast furnace cloth bag dust |
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| CN101054622A (en) * | 2007-05-17 | 2007-10-17 | 邵常艳 | Method of preparing machine-made cool solidifying pellet mine |
| CN101899566A (en) * | 2009-05-27 | 2010-12-01 | 宝山钢铁股份有限公司 | High polymer binder for cold bond pellet and preparation method thereof |
| CN103484665A (en) * | 2013-10-14 | 2014-01-01 | 北京科技大学 | Method for manufacturing metallurgic composite pellet by using different binders and two-step pelletizing way |
| CN103667692A (en) * | 2014-01-02 | 2014-03-26 | 嘉峪关市园通新型保温材料有限责任公司 | Combined fluorite powder palletizing adhesion agent and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054622A (en) * | 2007-05-17 | 2007-10-17 | 邵常艳 | Method of preparing machine-made cool solidifying pellet mine |
| CN101899566A (en) * | 2009-05-27 | 2010-12-01 | 宝山钢铁股份有限公司 | High polymer binder for cold bond pellet and preparation method thereof |
| CN103484665A (en) * | 2013-10-14 | 2014-01-01 | 北京科技大学 | Method for manufacturing metallurgic composite pellet by using different binders and two-step pelletizing way |
| CN103667692A (en) * | 2014-01-02 | 2014-03-26 | 嘉峪关市园通新型保温材料有限责任公司 | Combined fluorite powder palletizing adhesion agent and application thereof |
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