CN114737055B - High-purity composite binder for metallurgical pellets and application method thereof - Google Patents
High-purity composite binder for metallurgical pellets and application method thereof Download PDFInfo
- Publication number
- CN114737055B CN114737055B CN202210509654.1A CN202210509654A CN114737055B CN 114737055 B CN114737055 B CN 114737055B CN 202210509654 A CN202210509654 A CN 202210509654A CN 114737055 B CN114737055 B CN 114737055B
- Authority
- CN
- China
- Prior art keywords
- composite binder
- pellets
- metallurgical
- various
- lignin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000008188 pellet Substances 0.000 title claims abstract description 70
- 239000011230 binding agent Substances 0.000 title claims abstract description 69
- 239000002131 composite material Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000002028 Biomass Substances 0.000 claims abstract description 21
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229920005610 lignin Polymers 0.000 claims abstract description 19
- 229920002472 Starch Polymers 0.000 claims abstract description 9
- 235000019698 starch Nutrition 0.000 claims abstract description 9
- 239000008107 starch Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 31
- 239000002994 raw material Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 16
- 229920001592 potato starch Polymers 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 11
- 229920002261 Corn starch Polymers 0.000 claims description 10
- 239000008120 corn starch Substances 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical group [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 7
- 244000017020 Ipomoea batatas Species 0.000 claims description 6
- 235000002678 Ipomoea batatas Nutrition 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229920001732 Lignosulfonate Polymers 0.000 claims description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 239000011591 potassium Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 240000003183 Manihot esculenta Species 0.000 claims description 3
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229920002488 Hemicellulose Polymers 0.000 claims description 2
- 240000004922 Vigna radiata Species 0.000 claims description 2
- 235000010721 Vigna radiata var radiata Nutrition 0.000 claims description 2
- 235000011469 Vigna radiata var sublobata Nutrition 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000007857 degradation product Substances 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 239000010902 straw Substances 0.000 claims description 2
- 229940100445 wheat starch Drugs 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 238000005979 thermal decomposition reaction Methods 0.000 claims 1
- 239000011882 ultra-fine particle Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 10
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000000843 powder Substances 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010310 metallurgical process Methods 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 18
- 239000003921 oil Substances 0.000 description 18
- 239000002699 waste material Substances 0.000 description 17
- 229910000831 Steel Inorganic materials 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 238000007670 refining Methods 0.000 description 14
- 229910052710 silicon Inorganic materials 0.000 description 12
- 239000010703 silicon Substances 0.000 description 12
- 239000002893 slag Substances 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 8
- 229910000720 Silicomanganese Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 239000011863 silicon-based powder Substances 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 239000000571 coke Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229910021487 silica fume Inorganic materials 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 241000209140 Triticum Species 0.000 description 3
- 235000021307 Triticum Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000004111 Potassium silicate Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 235000012907 honey Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002023 wood 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
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
-
- 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
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A high-purity composite binder for metallurgical pellets and a use method thereof belong to the technical fields of environmental protection and metallurgy. The composite binder is composed of four components, namely starch, lignin, silica sol and biomass oil, and the four components are selected according to the characteristics and the use requirements of a bonding object. The high-purity composite binder can reduce various impurities brought into metal elements unnecessary in the metallurgical process while ensuring the cold strength and the high-temperature strength of the pellets, is beneficial to efficiently utilizing various powder materials, protecting the environment and improving the resource utilization rate. The usability of various metallurgical pellets is improved, and the use occasion of various powder materials is greatly expanded.
Description
Technical Field
The invention relates to a high-purity composite binder for metallurgical pellets, belonging to the environmental protection and metallurgical technology.
Background
Various metal-containing powders such as various furnace dust, rolled steel sheets, scrap iron, sludge, return ores, micro silicon powder, steel slag, smelting slag, dust and the like produced in the metallurgical industry and various carbonaceous reducing agents such as powders of charcoal, coal, coke, wood chips and the like. The powder can be reused in a pellet preparation mode, so that the environmental protection cost can be reduced, and the resource utilization rate of metal and carbonaceous reducing agent can be improved.
Inorganic binders and organic binders commonly used for metallurgical pellets. Typical inorganic binders are: sodium silicate, potassium silicate, bentonite, fluorite powder, montmorillonite, clay, sodium carbonate, sodium hydroxide, cement, silica fume and the like. Common organic binders are: organic binder: wheat flour, tapioca flour, honey waste liquid, tar, paper pulp and polyvinyl alcohol. For inorganic binders, certain metal smelting processes may be contaminated or affected by the presence of some metal impurities. For example, al in bentonite as an inorganic binder 2 O 3 The content is high, slag is finally formed in the general smelting process, and the energy consumption and the electricity consumption in the furnace can be improved due to improper allocation. The organic binder has the problem that the bonding effect is invalid at high temperature and the high-temperature strength of the pellets is reduced.
Disclosure of Invention
The invention aims to provide a high-purity composite binder for metallurgical pellets and a use method thereof.
The invention relates to a high-purity composite binder for metallurgical pellets and a use method thereof, wherein the high-purity composite binder for metallurgical pellets comprises the following components in percentage by mass: starch 0.1-25%, lignin 0.1-25%, silica sol 0.1-25%, and biomass oil 0.1-30%.
The invention relates to a use method of a high-purity composite binder for metallurgical pellets, which comprises the following steps:
step (1) uniformly mixing the components of the composite binder according to the proportion;
step (2) uniformly mixing the composite binder obtained in the step (1) with pellet raw materials, and adding a proper amount of water when needed;
step (3), performing pressure forming on the mixture obtained in the step (2), and drying to obtain metallurgical pellets;
the particle size of the pellet raw material particles in the step (2) is less than or equal to 7mm;
the step (2) is characterized in that the mixing of the composite binder and the pellet raw materials is carried out by various mixing machines or various manual mixing processes;
the pellet press forming process in the step (3) can be executed by various ball presses or various simple manual ball pressing devices.
Compared with the existing adhesive, the composite adhesive has the following advantages: 1) The metal element content is low, so that the method can be applied to most occasions needing early ball production, and pollution or other influences of the metal element on the production process are not required to be worried; 2) The composite binder can improve the cold and hot strength of the pellets, and can not generate a large amount of powder due to insufficient strength in a cold state and can not reduce the strength due to failure of an organic binder at a high temperature. Therefore, the invention has wide use scene and good use performance. The high-purity composite binder provided by the invention can reduce various impurities brought into metal elements unnecessary in the metallurgical process, and can ensure the cold strength and the high-temperature strength of the pellets. Is beneficial to efficiently utilizing various powders, protecting the environment and improving the utilization rate of resources.
Detailed Description
The invention relates to a high-purity composite binder for metallurgical pellets and a use method thereof, wherein the high-purity composite binder for metallurgical pellets comprises the following components in percentage by mass: starch 0.1-25%, lignin 0.1-25%, silica sol 0.1-25%, and biomass oil 0.1-30%.
The composite binder is prepared from corn starch, potato starch, sweet potato starch, tapioca starch, mung bean starch, wheat flour, or a mixture of one or more of the above starches.
The composite binder is prepared from sodium lignin sulfonate, calcium lignin sulfonate, potassium lignin sulfonate, or one or more of lignin.
The composite adhesive is prepared from superfine silica particles as colloidal aqueous solution and SiO 2 The content is 10-60% by mass.
The composite binder is prepared by thermally decomposing various forest, crop straw and agricultural and forestry product processing residues, and is a mixture of various degradation products macromolecular organic matters of cellulose, hemicellulose and lignin and water.
The falling strength of the metallurgical pellets prepared by the composite binder is more than or equal to 86%.
The compressive strength of the metallurgical pellets prepared by using the composite binder is more than or equal to 10MPa.
The strength of the drum of the metallurgical pellets prepared by the composite adhesive after heating is more than or equal to 85 percent.
The application method of the high-purity composite binder for the metallurgical pellets comprises the following steps of:
step (1) uniformly mixing the components of the composite binder according to the proportion;
step (2) uniformly mixing the composite binder obtained in the step (1) with pellet raw materials, and adding a proper amount of water when needed;
step (3), performing pressure forming on the mixture obtained in the step (2), and drying to obtain metallurgical pellets;
the particle size of the pellet raw material particles in the step (2) is less than or equal to 7mm;
the step (2) is characterized in that the mixing of the composite binder and the pellet raw materials is carried out by various mixing machines or various manual mixing processes;
the pellet press forming process in the step (3) can be executed by various ball presses or various simple manual ball pressing devices.
The invention is further developed with reference to the following examples. Example 1:
waste microsilica is selected as a raw material. The high-purity composite binder consists of corn starch, sodium lignin sulfonate, silica sol and biomass oil, wherein the dosage of the high-purity composite binder is calculated by the total mass percentage of the micro silicon powder: corn starch 2%, sodium lignin sulfonate 1.5%, silica sol 0.5% and biomass oil 12%. Uniformly mixing the components of the composite binder according to the proportion, and uniformly mixing the components with the waste mixture in a mixer for 6min; and pressing the uniformly mixed materials into pellets under the pressure of 25 MPa. The pressed pellets were dried and then subjected to various strength tests. The results were as follows: the drop strength is 98.2%, the compressive strength is 26.3MPa, and the drum strength is 89.2% after the drum is heated at 1100 ℃. The pellets can be used for molten steel refining, industrial silicon production, industrial silicon refining and industrial ferrosilicon and silicomanganese production processes.
Example 2:
waste microsilica and smelting slag are selected as raw materials. The high-purity composite binder consists of potato starch, lignin, silica sol and biomass oil, wherein the dosage of the high-purity composite binder is calculated by the total mass percent of micro silicon powder and smelting slag: potato starch 5.5%, lignin 7%, silica sol 1.5%, biomass oil 3%. Uniformly mixing the components of the composite binder according to the proportion, and uniformly mixing the components with the waste mixture in a mixer for 5min; and pressing the uniformly mixed materials into pellets under the pressure of 15 MPa. The pressed pellets were dried and then subjected to various strength tests. The results were as follows: the falling strength is 97.7%, the compressive strength is 19.3MPa, and the drum strength is 86.9% after the drum is heated at 1100 ℃. The pellets can be used for molten steel refining, industrial silicon refining and industrial ferrosilicon and silicomanganese production processes.
Example 3:
waste microsilica and cinder are selected as raw materials. The high-purity composite binder consists of corn starch, sweet potato starch, potassium lignin sulfonate, silica sol and biomass oil, wherein the dosage of the high-purity composite binder is calculated by the total mass percentage of micro silicon powder and coal cinder: corn starch 1.5%, sweet potato starch 1%, potassium lignosulfonate 1%, silica sol 1.5% and biomass oil 2%. Uniformly mixing the components of the composite binder according to the proportion, and uniformly mixing the components with the waste mixture in a mixer for 15min; and pressing the uniformly mixed materials into pellets under the pressure of 20 MPa. The pressed pellets were dried and then subjected to various strength tests. The results were as follows: the drop strength is 95.7%, the compressive strength is 18.3MPa, and the drum strength is 85.0% after the drum is heated at 1100 ℃. The pellets can be used for molten steel refining, industrial silicon production, industrial silicon refining and industrial ferrosilicon and silicomanganese production processes.
Example 4:
waste steel-making dust and steel slag are selected as raw materials. The high-purity composite binder consists of potato starch, lignin, silica sol and biomass oil, wherein the dosage of the high-purity composite binder is calculated by the total mass percent of micro silicon powder and steel slag: potato starch 5%, lignin 1%, silica sol 0.5% and biomass oil 3%. Uniformly mixing the components of the composite binder according to the proportion, and uniformly mixing the components with the waste mixture in a mixer for 5min; and pressing the uniformly mixed materials into pellets under the pressure of 10MPa. The pressed pellets were dried and then subjected to various strength tests. The results were as follows: the drop strength is 91.6%, the compressive strength is 15.0MPa, and the drum strength is 90.5% after heating at 700 ℃. The pellets can be used for molten steel refining, industrial silicon refining and industrial ferrosilicon and silicomanganese production processes.
Example 5:
waste steel slag is selected as a raw material. The high-purity composite binder consists of corn starch, sodium lignin sulfonate, silica sol and biomass oil, and the dosage of the high-purity composite binder is calculated by the total mass percentage of steel slag: 18.5% of corn starch, 2.5% of sodium lignin sulfonate, 3.5% of silica sol and 1% of biomass oil. Uniformly mixing the components of the composite binder according to the proportion, and uniformly mixing the components with the waste mixture in a mixer for 10min; and pressing the uniformly mixed materials into pellets under the pressure of 20 MPa. The pressed pellets were dried and then subjected to various strength tests. The results were as follows: the drop strength is 90.7%, the compressive strength is 12.3MPa, and the drum strength is 88.1% after heating at 700 ℃. The pellets can be used for molten steel refining, industrial silicon refining and industrial ferrosilicon and silicomanganese production processes.
Example 6:
selecting waste coke slag as a raw material. The high-purity composite binder consists of sweet potato starch, potassium lignosulfonate, lignin, silica sol and biomass oil, wherein the dosage of the high-purity composite binder is calculated by the total mass percentage of coke residues: 4.5% of sweet potato starch, 2% of sodium lignin sulfonate, 1% of lignin, 1.5% of silica sol and 11% of biomass oil. Uniformly mixing the components of the composite binder according to the proportion, and uniformly mixing the components with the waste mixture in a mixer for 5min; and pressing the uniformly mixed materials into pellets under the pressure of 10MPa. The pressed pellets were dried and then subjected to various strength tests. The results were as follows: the falling strength is 90.7%, the compressive strength is 15.9MPa, and the drum strength is 95.0% after the drum is heated at 1100 ℃. The pellets can be used for industrial silicon production and industrial ferrosilicon and silicomanganese production processes.
Example 7:
waste microsilica, scrap iron and coke residue are selected as raw materials. The high-purity composite binder consists of corn starch, lignin, silica sol and biomass oil, wherein the dosage of the high-purity composite binder is calculated by the total mass percentage of micro silicon powder, scrap iron and coke residues: 10% of corn starch, 5% of lignin, 0.5% of silica sol and 1% of biomass oil. Uniformly mixing the components of the composite binder according to the proportion, and uniformly mixing the components with the waste mixture in a mixer for 8min; and pressing the uniformly mixed materials into pellets under the pressure of 25 MPa. The pressed pellets were dried and then subjected to various strength tests. The results were as follows: the drop strength is 94.2%, the compressive strength is 28.3MPa, and the drum strength is 95.0% after the drum is heated at 1100 ℃. The pellets can be used for molten steel refining, industrial silicon production, industrial silicon refining and industrial ferrosilicon and silicomanganese production processes.
Example 8:
waste steel slag, dust and scrap iron are selected as raw materials. The high-purity composite binder consists of wheat flour, lignin, silica sol and biomass oil, wherein the dosage of the high-purity composite binder is calculated by the total mass percent of steel slag, dust and scrap iron: 8.5% of wheat flour, 7% of lignin, 5.5% of silica sol and 3% of biomass oil. Uniformly mixing the components of the composite binder according to the proportion, and uniformly mixing the components with the waste mixture in a mixer for 12min; and pressing the uniformly mixed materials into pellets under the pressure of 25 MPa. The pressed pellets were dried and then subjected to various strength tests. The results were as follows: the falling strength is 90.7%, the compressive strength is 12.3MPa, and the drum strength is 90.5% after the drum is heated at 1100 ℃. The pellets can be used for molten steel refining, industrial silicon production, industrial silicon refining and industrial ferrosilicon and silicomanganese production processes.
Claims (7)
1. The high-purity composite binder for the metallurgical pellets is characterized by comprising the following components in percentage by mass: starch 0.1-25%, lignin 0.1-25%, silica sol 0.1-25%, biomass oil 0.1-30%;
the silica sol is a colloidal aqueous solution of ultrafine particles of silica, siO thereof 2 The content is 10-60% of the mass fraction;
the biomass oil is obtained by thermal decomposition of various forest trees, crop straws and agricultural and forestry product processing residues, and is a mixture composed of various degradation products macromolecular organic matters of cellulose, hemicellulose and lignin and water.
2. The high purity composite binder for metallurgical pellets of claim 1, wherein: the component starch is corn starch, potato starch, sweet potato starch, tapioca starch, mung bean starch, wheat flour, or a mixture of two or more of the above starches.
3. The high purity composite binder for metallurgical pellets of claim 1, wherein: the lignin component is sodium lignin sulfonate, or calcium lignin sulfonate, or potassium lignin sulfonate, or a mixture of two or more of the above lignin components.
4. The high purity composite binder for metallurgical pellets of claim 1, wherein: the falling strength of the metallurgical pellets prepared by using the adhesive is more than or equal to 86 percent.
5. The high purity composite binder for metallurgical pellets of claim 1, wherein: the compressive strength of the metallurgical pellets prepared by using the adhesive is more than or equal to 10MPa.
6. The high purity composite binder for metallurgical pellets of claim 1, wherein: the strength of the drum of the metallurgical pellets prepared by the adhesive after being heated is more than or equal to 85 percent.
7. The method of using a high purity composite binder for metallurgical pellets of claim 1, comprising the steps of:
step (1) uniformly mixing the components of the composite binder according to the proportion;
step (2) uniformly mixing the composite binder obtained in the step (1) with pellet raw materials, and adding a proper amount of water when needed;
step (3), performing pressure forming on the mixture obtained in the step (2), and drying to obtain metallurgical pellets;
the particle size of the pellet raw material particles in the step (2) is less than or equal to 7mm;
the step (2) is characterized in that the mixing of the composite binder and the pellet raw materials is carried out by various mixing machines or various manual mixing processes;
the pellet press forming process in the step (3) can be executed by various ball presses or various simple manual ball pressing devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210509654.1A CN114737055B (en) | 2022-05-11 | 2022-05-11 | High-purity composite binder for metallurgical pellets and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210509654.1A CN114737055B (en) | 2022-05-11 | 2022-05-11 | High-purity composite binder for metallurgical pellets and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114737055A CN114737055A (en) | 2022-07-12 |
| CN114737055B true CN114737055B (en) | 2024-03-29 |
Family
ID=82285570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210509654.1A Active CN114737055B (en) | 2022-05-11 | 2022-05-11 | High-purity composite binder for metallurgical pellets and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114737055B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992005290A1 (en) * | 1990-09-26 | 1992-04-02 | Oriox Technologies, Inc. | Modified native starch base binder for pelletizing mineral material |
| DE60215398D1 (en) * | 2002-12-02 | 2006-11-23 | Council Scient Ind Res | COLD LABELING AND PELLETING OF MINERAL FINE PARTICLES USING AN IRON-CONTAINING HYDRAULIC BINDER |
| CN101619387A (en) * | 2009-08-12 | 2010-01-06 | 中南大学 | Low-temperature concretion adhesive for cold press iron coke and preparation method thereof |
| CN103898317A (en) * | 2012-12-28 | 2014-07-02 | 攀钢冶金材料有限责任公司 | Binding agent composition for titanium concentrate pelletizing and method for preparing titanium concentrate pellet |
| CN110316734A (en) * | 2019-03-25 | 2019-10-11 | 昆明冶金研究院 | A kind of industrial silicon production carbonaceous reducing agent pelletizing and preparation method thereof |
| CN114438315A (en) * | 2022-02-10 | 2022-05-06 | 贵州理工学院 | Formula of micro silicon powder pellet binder |
-
2022
- 2022-05-11 CN CN202210509654.1A patent/CN114737055B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992005290A1 (en) * | 1990-09-26 | 1992-04-02 | Oriox Technologies, Inc. | Modified native starch base binder for pelletizing mineral material |
| DE60215398D1 (en) * | 2002-12-02 | 2006-11-23 | Council Scient Ind Res | COLD LABELING AND PELLETING OF MINERAL FINE PARTICLES USING AN IRON-CONTAINING HYDRAULIC BINDER |
| CN101619387A (en) * | 2009-08-12 | 2010-01-06 | 中南大学 | Low-temperature concretion adhesive for cold press iron coke and preparation method thereof |
| CN103898317A (en) * | 2012-12-28 | 2014-07-02 | 攀钢冶金材料有限责任公司 | Binding agent composition for titanium concentrate pelletizing and method for preparing titanium concentrate pellet |
| CN110316734A (en) * | 2019-03-25 | 2019-10-11 | 昆明冶金研究院 | A kind of industrial silicon production carbonaceous reducing agent pelletizing and preparation method thereof |
| CN114438315A (en) * | 2022-02-10 | 2022-05-06 | 贵州理工学院 | Formula of micro silicon powder pellet binder |
Non-Patent Citations (1)
| Title |
|---|
| 竖炉型含碳球团有机粘结剂的选择与应用;陈津, 刘浏, 曾加庆;烧结球团;20001215(第06期);29-31 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114737055A (en) | 2022-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112725618A (en) | Special binder for converter dedusting cold-pressed pellets | |
| CN101619387B (en) | Low-temperature concretion adhesive for cold press iron coke and preparation method thereof | |
| CN1786202A (en) | Composite carbon containing pellet | |
| CN111020183A (en) | Binder for metallurgical cold-pressed pellets, cold-pressed pellets containing same and preparation method thereof | |
| CN114737055B (en) | High-purity composite binder for metallurgical pellets and application method thereof | |
| CN103409619A (en) | Cooled agglomerated pellet and preparation method thereof | |
| CN102912120A (en) | Method for manufacturing high-strength cold-pressed pellets | |
| CN101020961A (en) | Pretreatment of material for smelting ferrosilicon | |
| JP2015137379A (en) | Non-burning carbonaceous material interior ore for blast furnace and manufacturing method therefor | |
| CN102627435A (en) | Paper pulp waste residue steam-pressing brick and preparation method thereof | |
| CN112522509B (en) | Preparation process of cold-pressed red mud pellets, and product and application thereof | |
| CN110155970B (en) | Phosphate ore micro-powder pellet and preparation method thereof | |
| CN102051475A (en) | Method for recycling acid-washed iron-containing sludge | |
| CN110607438B (en) | Antioxidant calcium adhesive for steel mill fly ash and method for preparing fly ash pellets | |
| KR20030052954A (en) | Coal Briquettes For Iron and Steel Making Process, Method Of Manufacturing Thereof | |
| CN107163874A (en) | It is a kind of for adhesive of blast furnace dedusting ash cold compaction ball and preparation method thereof | |
| JP6176985B2 (en) | Recycling method of iron resources | |
| CN100579932C (en) | Composite material pressed brick and its production method | |
| CN104674001B (en) | Efficient environment-friendly cheap adhesion agent of pellet and preparation method thereof | |
| RU2321647C1 (en) | Iron-containing waste material such as scale briquetting method for melting | |
| CN111020182A (en) | Composite metallurgical pellet binder, cold-pressed pellet containing same and preparation method thereof | |
| JPH0368690A (en) | Manufacture of water-resistant fuel aggregate | |
| CN110042227A (en) | Sinter and preparation method thereof | |
| CN115572454B (en) | Composite binder and application thereof in carbide slag pellets | |
| KR101161366B1 (en) | Solid type binder of briquette combinning with agueous syrup |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |