CN106673453A - Utilization method of red mud slag - Google Patents
Utilization method of red mud slag Download PDFInfo
- Publication number
- CN106673453A CN106673453A CN201611179213.0A CN201611179213A CN106673453A CN 106673453 A CN106673453 A CN 106673453A CN 201611179213 A CN201611179213 A CN 201611179213A CN 106673453 A CN106673453 A CN 106673453A
- Authority
- CN
- China
- Prior art keywords
- red mud
- mud slag
- rock wool
- slag
- application way
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
- C21B13/105—Rotary hearth-type furnaces
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Metallurgy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a utilization method of red mud slag. The red mud slag, a small amount of dolomite, fly ash and the like are used as raw materials to synthesize rock wool. The main technology process comprises the following steps of mixing and grinding of a texturizing agent, homogenizing and heat insulating, centrifuging to throw cotton, and curing and forming. The utilization method has the advantages that the technology process is short, the rock wool is produced by molten secondary tailings, the energy is saved by not less than 50%, and the physical-chemical indexes of the produced rock wool meet the national standard on building fiber of rock wool prepared by basalt and other raw materials; the fiber diameter is less than or equal to 7.0mum, the water content is less than or equal to 10%, and the shot content is less than or equal to 10%; the wastes are effectively utilized, the higher economic value is produced, and the product with excellent property is produced.
Description
Technical field
The invention belongs to Material Field, and in particular to a kind of Application way of red mud slag.
Background technology
2015, China's aluminum oxide yield was 5898.0 ten thousand tons, about 70,000,000 tons of red mud is produced, to the end of the year 2015, red mud
About 3.8 hundred million tons of accumulative volume of cargo in storage, red mud utilization rate is less than 5%.Often produce 1 ton of Al2O3, 1.0~1.8 tons of red muds, red mud can be produced
Bulk deposition not only land occupation but also had polluted environment, the even more waste of resource.At present to the utilization of red mud in addition to directly use, portion
Divide research that red mud is carried into iron, the red mud slag produced after slag sluicing system still cannot be utilized largely.After this research mainly carries iron with reduction
Red mud slag be major ingredient, the good rock wool of the auxiliary material processability of the certain proportioning of blending realizes the recycling completely to red mud,
And produce the added value of great number.
The content of the invention
The technical problems to be solved by the invention are the defect for overcoming aforementioned techniques to exist, and are that this present invention proposes one kind
The Application way of red mud slag, after red mud is carried into iron through deferrization process reduction-molten point, after molten point of tailings of liquid of generation is modulated,
Cotton is got rid of for rock wool by centrifuge.
Used as hot-resistant heat-preserving and acoustic material, the material such as every physical and chemical index satisfaction basalt prepares rock to the rock wool of preparation
The fiber GB scope for building of cotton, fibre diameter≤7.0 micron, moisture content≤10%, shot content≤10%.Both it is effectively sharp
Economic worth very high can be produced again with discarded object, the properties of product produced are excellent.
The present invention is a kind of utilization red mud slag prepares the technical method of rock wool for primary raw material, the primary chemical of red mud slag into
It is divided into SiO2, Al2O3, CaO, separately have a small amount of MgO, FeO, NaO.Chemical composition is approached with basalt chemical composition, is to prepare rock
The primary raw material of cotton, adds the modulation red mud slag chemical composition such as a small amount of dolomite, carbide slag, flyash, to adapt to matching somebody with somebody for rock wool
Fang Yaoqiu.
With red mud slag, a small amount of dolomite, flyash etc. for Material synthesis rock wool, technical process is as shown in Figure 1 tune
Matter agent mixing fine grinding-equal vacuum-centrifugal cotton swinging-curing molding.
A kind of Application way of red mud slag of the invention, comprises the following steps：
(1) after red mud carries iron through reduction-molten point, molten slag is fitted into heating and thermal insulation in electric furnace, melt point red mud slag for 75~
90 weight portions, auxiliary material is 10~30 weight portions.
(2) it is auxiliary materials and mixing is levigate, it is levigate after auxiliary material input molten state under red mud slag in, heat up, afterwards in inertia
Constant temperature is completely melt and is homogenized to material under atmosphere, obtains molten state material；
(3) molten state material is poured out through chute, while getting rid of silk, the fiber of formation enters expansion chamber, adds binding agent, spray
High-pressure blast is blown, rock wool is obtained；
(4) rock wool is put into curing oven cooling, then shaping packing, obtains rock cotton board.
Wherein, point red mud slag main chemical compositions are melted in step (1) includes SiO2、Al2O3、CaO、MgO、FeO、NaO。
Wherein, auxiliary material includes dolomite, carbide slag, flyash in step (1).
Wherein, 1450~1550 DEG C are warming up in step (2).
Wherein, constant temperature time is 2~3h under inert atmosphere in step (2).
Wherein, four-roller centrifuge is used in step (3) to carry out getting rid of silk with the rotating speed of 5000~6000r/min of rotating speed.
Wherein, the time that rock wool cools down in curing oven in step (4) is 30~50min.
The invention also discloses a kind of use red mud slag Application way produce rock wool, wherein the fibre diameter of rock wool≤
7.0 microns, moisture content≤10%, shot content≤10%, it is preferable that the fibre diameter of rock wool be 4.0~7.0 microns, it is aqueous
The materials such as rate 0.1~0.5%, shot content≤7%, the physical and chemical index satisfaction basalt of rock wool prepare the fibre for building of rock wool
Dimension GB.
The Application way of red mud slag disclosed by the invention has advantages below：
(1) present invention directly feeds intake in molten point red mud slag and produces rock wool, takes full advantage of the heat of molten point red mud slag, raw
Not only low cost can also bring considerable economic benefit to production. art, while solving the problems, such as that solid waste is stacked.
(2) industrial flow of the present invention is compact, reduces the energy consumption of whole operation, and produces qualified rock wool product.
Brief description of the drawings
Fig. 1 is the technical process figure that the present invention produces rock wool using red mud slag.
Specific embodiment
It is abundant disclosed purpose, below with reference to drawings and Examples, the present invention is described in further detail.
Embodiment 1
As shown in figure 1, the red mud slag after rotary hearth furnace reduction treatment, molten point to carry and add auxiliary material under molten state after iron, wherein molten
Point red mud slag is 87 weight portions, and auxiliary material is 13 weight portions, the chemical composition of red mud slag and adjusting material as shown in table 1, acidity coefficient
MK=1.8.
The chemical component weight part of the red mud slag of table 1 and adjusting material
The adjusting materials such as dolomite, carbide slag, flyash are well mixed by a certain percentage, the ratio below 200 mesh is finely ground to
Example is more than 90%, is stirred in the red mud slag under input melt.It is subsequently placed into electric furnace and is warming up to 1500 DEG C, it is permanent under inert atmosphere
Warm 3h is completely melt and is homogenized to material.Molten state material is poured out through chute, while with four-roller centrifuge in speed 5000r/
Silk is got rid of under the power of min, the fiber of formation enters expansion chamber.Addition binding agent, injection high-pressure blast obtains rock wool.Rock wool is sent into
Curing oven, cools down 30min, you can shaping packing, obtains the excellent rock cotton board of performance indications, wherein rock wool fibers a diameter of 4.8
Micron, water content are that 0.32%, shot content is 6.1%.
Embodiment 2
As shown in figure 1, the red mud slag after rotary hearth furnace reduction treatment, molten point to carry and add auxiliary material under molten state after iron, wherein molten
Point red mud slag is 80 weight portions, and auxiliary material is 20 weight portions, the chemical composition of red mud slag and adjusting material as shown in table 2, acidity coefficient
MK=1.66.
The chemical component weight part of the red mud slag of table 2 and adjusting material
The adjusting materials such as dolomite, carbide slag, flyash are well mixed by a certain percentage, the ratio below 200 mesh is finely ground to
Example is more than 90%, is stirred in the red mud slag under input melt.It is subsequently placed into electric furnace and is warming up to 1450 DEG C, it is permanent under inert atmosphere
Warm 2.5h is completely melt and is homogenized to material.Molten state material is poured out through chute, while with four-roller centrifuge in speed
Silk is got rid of under the power of 5500r/min, the fiber of formation enters expansion chamber.Addition binding agent, injection high-pressure blast obtains rock wool.By rock
Cotton sends into curing oven, cools down 50min, you can shaping packing, obtains the excellent rock cotton board of performance indications, wherein rock wool fibers diameter
For 5.5 microns, water content are that 0.26%, shot content is 4.8%.
Embodiment 3
As shown in figure 1, the red mud slag after rotary hearth furnace reduction treatment, molten point to carry and add auxiliary material under molten state after iron, wherein molten
Point red mud slag is 75 weight portions, and auxiliary material is 25 weight portions, the chemical composition of red mud slag and adjusting material as shown in table 3, acidity coefficient
MK=2.59.
The chemical component weight part of the red mud slag of table 3 and adjusting material
The adjusting materials such as dolomite, carbide slag, flyash are well mixed by a certain percentage, the ratio below 200 mesh is finely ground to
Example is more than 90%, is stirred in the red mud slag under input melt.It is subsequently placed into electric furnace and is warming up to 1550 DEG C, it is permanent under inert atmosphere
Warm 2h is completely melt and is homogenized to material.Molten state material is poured out through chute, while with four-roller centrifuge in speed 6000r/
Silk is got rid of under the power of min, the fiber of formation enters expansion chamber.Addition binding agent, injection high-pressure blast obtains rock wool.Rock wool is sent into
Curing oven, cools down 40min, you can shaping packing, obtains the excellent rock cotton board of performance indications, wherein rock wool fibers a diameter of 5.2
Micron, water content are that 0.16%, shot content is 4.5%.
Embodiment 4
As shown in figure 1, the red mud slag after rotary hearth furnace reduction treatment, molten point to carry and add auxiliary material under molten state after iron, wherein molten
Point red mud slag is 90 weight portions, and auxiliary material is 10 weight portions, the chemical composition of red mud slag and adjusting material as shown in table 4, acidity coefficient
MK=2.52.
The chemical component weight part of the red mud slag of table 4 and adjusting material
The adjusting materials such as dolomite, carbide slag, flyash are well mixed by a certain percentage, the ratio below 200 mesh is finely ground to
Example is more than 90%, is stirred in the red mud slag under input melt.It is subsequently placed into electric furnace and is warming up to 1530 DEG C, it is permanent under inert atmosphere
Warm 2.5h is completely melt and is homogenized to material.Molten state material is poured out through chute, while with four-roller centrifuge in speed
Silk is got rid of under the power of 6000r/min, the fiber of formation enters expansion chamber.Addition binding agent, injection high-pressure blast obtains rock wool.By rock
Cotton sends into curing oven, cools down 45min, you can shaping packing, obtains the excellent rock cotton board of performance indications, wherein rock wool fibers diameter
For 6.4 microns, water content are that 0.39%, shot content is 6.8%.
Embodiment described above only expresses embodiments of the present invention, and its description is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection model of the invention
Enclose.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of Application way of red mud slag, comprises the following steps：
(1) the molten point red mud slag of liquid is obtained after the red mud being carried into iron through reduction, molten point, the red mud slag of liquid is loaded into electricity
Heating and thermal insulation in stove；
(2) it is auxiliary materials and mixing is levigate and put into and obtain in the red mud slag under molten state mixed material, heat up and in indifferent gas
Constant temperature is completely melt and is homogenized to the mixed material under atmosphere, obtains molten state mixture material, wherein the accessory package includes white clouds
Stone, carbide slag, flyash；
(3) mixed material of molten state is poured out through chute, while getting rid of silk, the fiber of formation enters expansion chamber, and addition is viscous
Knot agent, is blown high-pressure blast, obtains rock wool；
(4) rock wool is put into curing oven cooling, then shaping packing, obtains rock cotton board.
2. the Application way of red mud slag as described in claim 1, wherein red mud slag chemical composition includes described in step (1)
SiO2、Al2O3、CaO、MgO、FeO、NaO。
3. the Application way of red mud slag as described in claim 1, red mud slag is 75~90 weight wherein described in step (2)
Part, the auxiliary material is 10~30 weight portions.
4. the Application way of red mud slag as described in claim 1, is wherein warming up to 1450~1550 DEG C in step (2).
5. the Application way of red mud slag as described in claim 1, constant temperature time is 2 under inert atmosphere wherein in step (2)
~3h.
6. the Application way of red mud slag as described in claim 1, wherein gets rid of silk using four-roller centrifuge described in step (3)
Carry out.
7. the Application way of red mud slag as described in claim 1, rock wool is in the curing oven wherein described in step (4)
The time of cooling is 30~50min.
8. the Application way of red mud slag as described in claim 1, the fibre of rock wool wherein described in step (3) and step (4)
Dimension diameter≤7.0 micron, moisture content≤10%, shot content≤10%.
9. the rock wool that prepared by the Application way of the red mud slag according to claim any one of 1-8, wherein the fibre of the rock wool
Tie up a diameter of 4.0~7.0 microns, moisture content be 0.1~0.5%, shot content≤7%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611179213.0A CN106673453A (en) | 2016-12-19 | 2016-12-19 | Utilization method of red mud slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611179213.0A CN106673453A (en) | 2016-12-19 | 2016-12-19 | Utilization method of red mud slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106673453A true CN106673453A (en) | 2017-05-17 |
Family
ID=58870010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611179213.0A Pending CN106673453A (en) | 2016-12-19 | 2016-12-19 | Utilization method of red mud slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106673453A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354583A (en) * | 2017-07-10 | 2017-11-17 | 洛阳光正金属技术服务有限公司 | The high-valued comprehensive utilization process of dead catalyst slag |
| CN109721251A (en) * | 2019-02-25 | 2019-05-07 | 中科晨晰环境科技股份有限公司 | A method of the tailings after mentioning iron using red mud produces rock wool |
| CN115196880A (en) * | 2022-09-15 | 2022-10-18 | 大城县洪海保温材料有限公司 | Method for producing rock wool product by utilizing rock wool waste residues |
| CN115196881A (en) * | 2022-09-19 | 2022-10-18 | 大城县洪海保温材料有限公司 | High-strength hydrophobic rock wool material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001823A (en) * | 2010-12-13 | 2011-04-06 | 河南煤业化工集团有限责任公司 | Production method of inorganic fiber by using red mud and fly ash |
| CN103952515A (en) * | 2014-04-29 | 2014-07-30 | 北京科技大学 | Method for recycling high-iron red mud as steelmaking slag former/dephosphorizing agent |
| CN105271691A (en) * | 2015-10-13 | 2016-01-27 | 张勇 | Technological method for producing inorganic fibers from red mud |
| CN106119532A (en) * | 2016-08-01 | 2016-11-16 | 江苏省冶金设计院有限公司 | Process the method and system of red mud |
-
2016
- 2016-12-19 CN CN201611179213.0A patent/CN106673453A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001823A (en) * | 2010-12-13 | 2011-04-06 | 河南煤业化工集团有限责任公司 | Production method of inorganic fiber by using red mud and fly ash |
| CN103952515A (en) * | 2014-04-29 | 2014-07-30 | 北京科技大学 | Method for recycling high-iron red mud as steelmaking slag former/dephosphorizing agent |
| CN105271691A (en) * | 2015-10-13 | 2016-01-27 | 张勇 | Technological method for producing inorganic fibers from red mud |
| CN106119532A (en) * | 2016-08-01 | 2016-11-16 | 江苏省冶金设计院有限公司 | Process the method and system of red mud |
Non-Patent Citations (1)
| Title |
|---|
| 周瑞涛: "《建筑材料基础知识》", 30 June 1986, 陕西科学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354583A (en) * | 2017-07-10 | 2017-11-17 | 洛阳光正金属技术服务有限公司 | The high-valued comprehensive utilization process of dead catalyst slag |
| CN109721251A (en) * | 2019-02-25 | 2019-05-07 | 中科晨晰环境科技股份有限公司 | A method of the tailings after mentioning iron using red mud produces rock wool |
| CN115196880A (en) * | 2022-09-15 | 2022-10-18 | 大城县洪海保温材料有限公司 | Method for producing rock wool product by utilizing rock wool waste residues |
| CN115196880B (en) * | 2022-09-15 | 2022-12-13 | 大城县洪海保温材料有限公司 | Method for producing rock wool product by utilizing rock wool waste residues |
| CN115196881A (en) * | 2022-09-19 | 2022-10-18 | 大城县洪海保温材料有限公司 | High-strength hydrophobic rock wool material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107337353A (en) | A kind of environmentally friendly rock wool and the production method of environmentally friendly rock wool | |
| CN106673453A (en) | Utilization method of red mud slag | |
| CN105271691B (en) | Utilize the process of red mud production inorfil | |
| CN106637663B (en) | Using solid waste as rock wool of raw material and its preparation method and application | |
| CN101560053A (en) | Production method of mineral wool with high-temperature liquid ferroalloy waste as raw materials | |
| CN101289274B (en) | Process for preparing inorfil by using iron blast-furnace slag and fly ash | |
| CN102701704B (en) | Novel heat accumulation concrete for solar thermal power station and preparation method for novel heat accumulation concrete | |
| CN112707645B (en) | Method for preparing mineral fibers based on thermal state coal gasification furnace slag, heat-insulating mineral cotton and application | |
| CN113651538A (en) | Method for preparing microcrystalline glass by melting waste incineration fly ash | |
| CN102796833A (en) | Modification technology of iron reduction and component reconstruction for molten slag | |
| CN109485342A (en) | Kenaf stalk lightweight anti-cracking heat insulation mortar and preparation method thereof | |
| CN109896747A (en) | A kind of method that one-step method makes ore-rock cotton using lateritic nickel ore high temperature hot melt waste residue | |
| CN106219991B (en) | A kind of preparation method of basalt fibre enhancing foam glass | |
| CN113753864A (en) | Method for co-production of mineral cotton fiber by using high-impurity phosphogypsum to prepare sulfuric acid | |
| CN107473595A (en) | A kind of Novel rock wool and its processing technology for adding bauxite raw material | |
| CN109160743B (en) | High-strength refractory rock wool and preparation method thereof | |
| CN108558309B (en) | Curb prepared by processing solid waste blast furnace slag and fly ash | |
| CN107056040A (en) | The online hardening and tempering method of blast furnace cinder in a kind of mineral wool production | |
| CN116396027A (en) | Non-steamed titanium slag-based baking-free brick and preparation method thereof | |
| CN110407476B (en) | Rock/mineral wool product and preparation method thereof | |
| CN106673418A (en) | Utilization method of secondary copper tailings | |
| CN107010839A (en) | A kind of micro crystal material of cerium mischmetal containing lanthanum and preparation method thereof | |
| CN109608049A (en) | A kind of additive and mineral wool and preparation method thereof enhancing mineral wool high temperature resistance | |
| CN206465232U (en) | The system that a kind of utilization red mud slag produces mineral fiber tilesn | |
| CN112441826B (en) | Ultra-light ceramsite and preparation method thereof |
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 |