CN206828587U - The system for comprehensively utilizing Industrial Solid Waste - Google Patents
The system for comprehensively utilizing Industrial Solid Waste Download PDFInfo
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- CN206828587U CN206828587U CN201720553829.3U CN201720553829U CN206828587U CN 206828587 U CN206828587 U CN 206828587U CN 201720553829 U CN201720553829 U CN 201720553829U CN 206828587 U CN206828587 U CN 206828587U
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Abstract
The utility model discloses a kind of system for comprehensively utilizing Industrial Solid Waste.The system includes mixing arrangement, is exported provided with nonferrous metallurgy slag entrance, red mud entrance, carbide slag entrance and compound；Shaped device, exported provided with compound entrance and pelletizing, compound entrance is connected with the compound outlet of mixing arrangement；Oxidizing roasting device, exported provided with pelletizing entrance, oxidizing gas entrance and acid pellet, pelletizing entrance is connected with the pelletizing outlet of shaped device；Reduction roasting device, exported provided with acid pellet entrance, reducibility gas entrance and fragmentation pelletizing, acid pellet entrance is connected with the acid pellet outlet of oxidizing roasting device；Cooling device, exported provided with fragmentation pelletizing entrance and efflorescence material, fragmentation pelletizing entrance is connected with the fragmentation pelletizing outlet of reduction roasting device；Concentration equipment, provided with efflorescence material entrance, magnetic powder outlet and namagnetic substance outlet, efflorescence material entrance is connected with the efflorescence material outlet of cooling device.The Iron grade of obtained magnetic powder is high.
Description
Technical field
The utility model belongs to field of metallurgy, and in particular to a kind of system for comprehensively utilizing Industrial Solid Waste.
Background technology
Nonferrous metallurgy slag, refer to that pyrogenic process extracts non-ferrous metal slag as caused by copper, nickel etc., wherein contain about 40% iron,
It is mainly with fayalite (2FeOSiO2) form presence, also on a small quantity with magnetic iron ore (Fe3O4) form presence.Due to iron olive
Olive stone direct-reduction difficulty is larger, and the sulfur content in such metallurgical slag is general higher, if directly carrying out reduction extraction iron, sulphur
Element can enter in iron, turn into product impurity.
Red mud is caused most important solid residue after bauxite extraction aluminum oxide, because wherein containing a large amount of iron oxide
And red is presented, therefore referred to as red mud.Red mud is in addition to small part is applied to the purposes such as manufacture of cement, brickmaking at present, mostly
In outdoor stockpiling state of building a dam.Contain Fe in red mud2O3, the material such as CaO, MgO.
Carbide slag is in the industrial products production process such as acetylene, polyvinyl chloride, polyvinyl alcohol, caused by after calcium carbide hydrolysis
Sediment, Main Ingredients and Appearance are calcium hydroxide.Accumulation not only takes a large amount of soils to carbide slag for a long time, and has serious erosion to soil
Effect.Therefore, carbide slag is included the IIth class general industrial solid waste by national environmental protection portion, it is desirable to is managed.Mesh
Before, caused carbide slag is that therefore, handling these carbide slag discarded objects not only needs as offal treatment in production process
Substantial amounts of manpower and materials are spent, also create the waste of resource.
Utility model content
For Industrial Solid Waste disposal status, the utility model by nonferrous metallurgy slag, red mud and carbide slag according to a certain percentage
Pelletizing is mixed and made into, is calcined in an oxidizing atmosphere first, is then calcined under weak reducing atmosphere, is needed not move through broken
Device, direct magnetic separation can obtain Armco magnetic iron product, and technique is simple, and cost is low.
The system of comprehensive utilization Industrial Solid Waste provided by the utility model, including：
Mixing arrangement, exported provided with nonferrous metallurgy slag entrance, red mud entrance, carbide slag entrance and compound；
Shaped device, exported provided with compound entrance and pelletizing, the mixing of the compound entrance and the mixing arrangement
Material outlet is connected；
Oxidizing roasting device, provided with pelletizing entrance, oxidizing gas entrance and acid pellet export, the pelletizing entrance with
The pelletizing outlet of the shaped device is connected；
Reduction roasting device, exported provided with acid pellet entrance, reducibility gas entrance and fragmentation pelletizing, the oxidation ball
Group's entrance is connected with the acid pellet outlet of the oxidizing roasting device；
Cooling device, exported provided with fragmentation pelletizing entrance and efflorescence material, the fragmentation pelletizing entrance and the reduction roasting
The fragmentation pelletizing outlet of device is connected；
Concentration equipment, provided with efflorescence material entrance, magnetic powder outlet and namagnetic substance outlet, the efflorescence material entrance with
The efflorescence material outlet of the cooling device is connected.
Preferably, said system also includes：
First breaker, provided with feed(raw material)inlet and powder outlet, the powder outlet is coloured with the mixing arrangement
Metallurgical slag entrance is connected.
Preferably, said system also includes：
Second breaker, provided with feed(raw material)inlet and powder outlet, the calcium carbide of the powder outlet and the mixing arrangement
Slag entrance is connected.
Preferably, said system also includes：
Drying unit, exported provided with feed(raw material)inlet and drying material, the drying material outlet and the red mud of the mixing arrangement
Entrance is connected.
Raw material in the utility model is the solid waste product of a variety of industries, can reach without adding other materials and carries iron
The effect of desulfurization, can solve the problems, such as stockpiling by comprehensive utilization, be advantageous to improve environment.
For the Iron grade of magnetic powder made from the utility model more than 70%, sulfur content can as little as 0.007%.
Brief description of the drawings
Fig. 1 is the structural representation of the system of the comprehensive utilization Industrial Solid Waste in the utility model embodiment.
Embodiment
Below in conjunction with drawings and examples, specific embodiment of the present utility model is described in more details, with
Just the advantages of better understood when scheme of the present utility model and its various aspects.However, specific implementations described below
Mode and embodiment are for illustrative purposes only, rather than to limitation of the present utility model.
Pelletizing is made after being well mixed nonferrous metallurgy slag, red mud and carbide slag according to a certain percentage in the utility model.It is first
Pelletizing is first carried out to roasting a period of time in an oxidizing atmosphere, continues to be calcined under weak reducing atmosphere, promotes pelletizing also
A certain degree of swelling fracture occurs during original, the pelletizing of fragmentation is finally placed to cooling a period of time in atmosphere, accelerated
The efflorescence of material, efflorescence material is directly subjected to magnetic separation, final products can be obtained.By above-mentioned steps, broken step is needed not move through
Suddenly directly magnetic separation magnetic iron product can be obtained.
As shown in figure 1, comprehensive utilization Industrial Solid Waste (metallurgical slag, red mud and carbide slag) provided by the utility model prepares magnetic
The system of property iron powder includes：First breaker 1, drying unit 2, the second breaker 3, mixing arrangement 4, shaped device 5, oxygen
Change calciner 6, reduction roasting device 7, cooling device 8 and concentration equipment 9.
First breaker 1 is used for nonferrous metallurgy slag pulverizing and jevigating to appropriate particle size, in order to subsequent forming.First is broken
Crushing device 1 is provided with feed(raw material)inlet and powder outlet.Said system can not also include the first breaker 1, directly using suitable
The metallurgical slag of particle diameter.
Drying unit 2 is used to dry red mud raw material.Drying unit 2 is provided with feed(raw material)inlet and drying material exports.If red mud is former
The moisture of material is not high, and said system can not also include drying unit 2.
Second breaker 3 is used for carbide slag pulverizing and jevigating to appropriate particle size, in order to subsequent forming.Second broken dress
Put 3 and be provided with feed(raw material)inlet and powder outlet.Said system can not also include the second breaker 3, directly using appropriate particle size
Carbide slag.
Mixing arrangement 4 is used to the metallurgical slag of appropriate particle size and moisture, red mud and carbide slag being well mixed.Mixing arrangement 4
Exported provided with metallurgical slag entrance, red mud entrance, carbide slag entrance and compound, the powder of metallurgical slag entrance and the first breaker 1
Material outlet is connected, and red mud entrance is connected with the drying material outlet of drying unit 2, the powder of carbide slag entrance and the second breaker 3
Material outlet is connected.
Shaped device 5 is used to compound being prepared into pelletizing.Shaped device 5 is provided with compound entrance and pelletizing exports, and mixes
Material entrance is closed with the compound outlet of mixing arrangement 4 to be connected.
Oxidizing roasting device 6 is used to carry out agglomerates in oxidizing atmosphere.Oxidizing roasting device 6 enters provided with pelletizing
Mouth, oxidizing gas entrance and acid pellet outlet, pelletizing entrance are connected with the pelletizing outlet of shaped device 6.
Reduction roasting device 7 is used to carry out roasting oxidation pelletizing under weakly reducing atmosphere.Reduction roasting device 7 is provided with oxidation
Pelletizing entrance, reducibility gas entrance and the outlet of fragmentation pelletizing, the acid pellet of acid pellet entrance and oxidizing roasting device 6 go out
Mouth is connected；
Cooling device 8 is used to cool down fragmentation pelletizing, the further efflorescence in cooling device 8 of fragmentation pelletizing, obtains efflorescence material.
Cooling device 8 is provided with fragmentation pelletizing entrance and efflorescence material exports, and the fragmentation pelletizing of fragmentation pelletizing entrance and reduction roasting device 7 goes out
Mouth is connected.
Concentration equipment 9 is used for magnetic separation and obtains magnetic powder.Concentration equipment 9 be provided with efflorescence material entrance, magnetic powder outlet and
Namagnetic substance exports, and efflorescence material entrance is connected with the efflorescence material outlet of cooling device 8.
Above-mentioned nonferrous metallurgy slag refers to the product obtained during pyrometallurgical smelting non-ferrous metal (such as copper, nickel), wherein iron mainly with
Fayalite (2FeOSiO2) form presence, also a small amount of magnetic iron ore (Fe3O4)。
Above-mentioned red mud is caused solid residue after bauxite extraction aluminum oxide, and the iron in red mud is mainly with bloodstone
(Fe2O3) form presence.
Above-mentioned carbide slag is that calcium carbide hydrolysis obtains the residue after acetylene gas, and its main component is calcium hydroxide (Ca
(OH)2), simultaneously containing a certain amount of alkali metal (K, Na etc.) and alkaline-earth metal (Mg etc.).
In the utility model, the calcination atmosphere of oxidizing roasting refers to oxygen (O2) volumn concentration >=20% atmosphere,
Sulphur and oxygen generation SO in nonferrous metallurgy slag2, and reacted with the calcareous material in carbide slag and generate solid matter, reach
Gu the purpose of sulphur.Fe in red mud2O3SO can be catalyzed2It is changed into SO3, reduce the agglomeration of desulfurization product.Meanwhile gas herein
Under atmosphere, the fayalite in nonferrous metallurgy slag can be changed into bloodstone (Fe2O3)。
Meanwhile the SiO in the CaO and metallurgical slag in carbide slag2Reaction generation dicalcium silicate (β-C2S), such a material is rear
Crystal transition can occur in continuous cooling procedure.
In reducing roasting process, the crystalline substance of bloodstone can be increased in pelletizing containing many kinds of substance in red mud and carbide slag
Born of the same parents, and promote bloodstone that distortion of lattice occurs.In carbide slag and red mud alkali metal (Na, K etc.) and alkaline-earth metal (Ca,
Mg etc.) it is embedded in bloodstone, add lattice defect number.The distribution of lattice defect and various components be it is irregular, it is this
It is irregular to determine that diffusion coefficient of each component in reduction is different in hematite crystals.The bloodstone that structure cell increase is distorted
When reverting to magnetic iron ore, volume increases more, and caused stress is also big, therefore causes abnormal expansion and the efflorescence of pelletizing.In addition, by
Contain a certain amount of TiO in red mud2, the phase transition temperature that bloodstone converts to magnetic iron ore, while the glass phase generated can be reduced
Toughness value is very low, is the fragile ore deposit phase of comparison, and when unit cell volume increases, the stress increase of surrounding, glass mutually easily occurs disconnected
Split, therefore promote the generation of powder phenomenon-tion.
Meanwhile the Fe in pelletizing2O3Also reduction reaction can occur, due to being calcined under weakly reducing atmosphere, therefore only can
Reduction generation Fe3O4(ferromagnetism) rather than FeO (nonmagnetic), due to Fe3O4With ferromagnetism, during later separation magnetic separation
Easily sorted, improve the organic efficiency of iron.Weakly reducing atmosphere refers to containing reducibility gas CO and oxygen content is very low
Atmosphere.
There to be the pelletizing for expanding efflorescence to a certain degree to cool down in atmosphere after reduction, the silicon generated in early stage roasting process
Crystal transition can occur for sour dicalcium, in the steady β-C that are situated between2S generates the γ-C of stable state2S, crystalline phase conversion can cause volume swollen
It is swollen, so as to aggravate the efflorescence of material.
The utility model fully utilizes various industrial waste residues, and the Iron grade of obtained magnetic powder is high, can directly use
In ironmaking.
Raw material in the utility model is the solid waste product of a variety of industries, can reach without adding other materials and carries iron
The effect of desulfurization, can solve the problems, such as stockpiling by comprehensive utilization, be advantageous to improve environment.
Below with reference to specific embodiment, the utility model is illustrated.Institute's taking technique condition value in following embodiments
It is exemplary, its desirable number range is as shown in foregoing utility model content.Detection method used in following embodiments
It is the conventional detection method of the industry.
Embodiment 1
The present embodiment prepares magnetic powder using the system shown in Fig. 1, and idiographic flow is as follows：
Nonferrous metallurgy slag uses Flash Smelting Furnace nickel metallurgy tailings, and its iron content is 40.47%, sulfur content 0.24%；Red mud
Fe2O3Content 35.33%, Na2O content 2.75%, K2O content 0.62%, TiO2Content 1.74%；The CaO content of carbide slag is
59.77%, content of MgO 0.04%, K2O content 0.07%, Na2O content 0.05%, TiO2Content 0.08%.
First, respectively by Flash Smelting Furnace nickel metallurgy tailings, carbide slag raw material is levigate to accounting for 75% below 200 mesh, by red mud raw material
Water content is dried to as 8%.Three kinds of materials are well mixed according to a certain percentage pelletizing is made, wherein, the dosage root of carbide slag
According to the sulfur content in nonferrous metallurgy slag and the SiO in nonferrous metallurgy slag2Content determines that the CaO parts in carbide slag are with having
S in color metallurgical slag reacts, and wherein CaO and S mol ratio are 2:1；Another part and SiO2React, wherein CaO
With SiO2Mol ratio be 3:1.In addition, the weight of red mud and carbide slag ratio is 30:100.
Secondly, pelletizing is calcined in air atmosphere, sintering temperature is 800 DEG C, roasting time 30min, is obtained
Acid pellet.
Then, acid pellet is placed under weakly reducing atmosphere and be calcined, wherein, CO contents are 2000ppm, O2Content is
7%, 600 DEG C of sintering temperature, the Fe in roasting process in pelletizing2O3It is reduced into Fe3O4, while pelletizing generation is a certain degree of swollen
Swollen efflorescence, obtain the fragmentation pelletizing of reduction.
Then, by fragmentation pelletizing cooling and standings 30min in atmosphere, aggravate the efflorescence of pelletizing, obtain efflorescence material.
Finally, efflorescence material is subjected to magnetic separation, final products are magnetic powder.Its Iron grade is 70.82%, and sulfur content is
0.021%.
Embodiment 2
The present embodiment prepares magnetic powder using the system shown in Fig. 1, and idiographic flow is as follows：
Nonferrous metallurgy slag uses copper smelting by pyrometallurgy slag flotation mine tailing, and its iron content is 42.08%, sulfur content 0.68%；Red mud
Fe2O3Content 38.28%, Na2O content 4.85%, K2O content 0.24%, TiO2Content 2.11%；The CaO content of carbide slag
For 60.01%, content of MgO 0.09%, K2O content 0.05%, Na2O content 0.02%, TiO2Content 0.04%.
First, respectively by copper smelting by pyrometallurgy slag flotation mine tailing, carbide slag raw material is levigate to accounting for 75% below 200 mesh, by red mud
Raw material stoving to water content is 10%.Three kinds of materials are well mixed according to a certain percentage pelletizing is made, wherein, the use of carbide slag
Measure the sulfur content in nonferrous metallurgy slag and the SiO in metallurgical slag2Content determines, a CaO parts and smelting in carbide slag
S in golden slag reacts, and wherein CaO and S mol ratio are 3:1；Another part and SiO2React, wherein CaO and SiO2
Mol ratio be 2.7:1.In addition, the weight of red mud and carbide slag ratio is 45:100.
Secondly, pelletizing is calcined in the atmosphere of oxygen content 25%, sintering temperature is 1000 DEG C, and roasting time is
20min, obtain acid pellet.
Then, acid pellet is placed under weakly reducing atmosphere and be calcined, wherein, CO contents are 3500ppm, O2Content is
5%, 800 DEG C of sintering temperature, the Fe in roasting process in pelletizing2O3It is reduced into Fe3O4, while pelletizing generation is a certain degree of swollen
Swollen efflorescence, obtain the fragmentation pelletizing of reduction.
Then, by fragmentation pelletizing cooling and standings 40min in atmosphere, aggravate the efflorescence of pelletizing, obtain efflorescence material.
Finally, efflorescence material is subjected to magnetic separation, final products are magnetic powder.Its Iron grade is 71.94%, and sulfur content is
0.007%.
Embodiment 3
The present embodiment prepares magnetic powder using the system shown in Fig. 1, and idiographic flow is as follows：
Nonferrous metallurgy slag uses copper smelting by pyrometallurgy slag tailings, and its iron content is 43.21%, sulfur content 0.90%；Red mud
Fe2O3Content 37.51%, Na2O content 4.11%, K2O content 0.37%, TiO2Content 2.75%；The CaO content of carbide slag is
57.42%, content of MgO 1.45%, K2O content 0.04%, Na2O content 0.02%, TiO2Content 0.06%.
First, respectively by copper smelting by pyrometallurgy slag flotation mine tailing, carbide slag raw material is levigate to accounting for 75% below 200 mesh, by red mud
Raw material stoving to water content is 5%.Three kinds of materials are well mixed according to a certain percentage pelletizing is made, wherein, the use of carbide slag
Measure the sulfur content in nonferrous metallurgy slag and the SiO in nonferrous metallurgy slag2Content determines that the CaO in carbide slag is a part of
Reacted with the S in nonferrous metallurgy slag, wherein CaO and S mol ratio are 5:1；Another part and SiO2React, wherein
CaO and SiO2Mol ratio be 2.5:1.In addition, the weight of red mud and carbide slag ratio is 60:100.
Secondly, pelletizing is calcined in the atmosphere for being 23% in oxygen content, sintering temperature is 1200 DEG C, during roasting
Between be 15min, obtain acid pellet.
Then, acid pellet is placed under weakly reducing atmosphere and be calcined, wherein, CO contents are 5000ppm, O2Content is
3%, 1000 DEG C of sintering temperature, the Fe in roasting process in pelletizing2O3It is reduced into Fe3O4, while pelletizing expands efflorescence, obtains
Obtain the reducting pellet of fragmentation.
Then, by fragmentation pelletizing cooling and standings 60min in atmosphere, aggravate the efflorescence of pelletizing, obtain efflorescence material.
Finally, efflorescence material is subjected to magnetic separation, final products are magnetic powder.Its Iron grade is 72.21%, and sulfur content is
0.014%.
It was found from above-described embodiment, the Iron grade of magnetic powder made from the utility model is high.
To sum up, the utility model fully utilize it is a variety of industry caused by waste residue, solve the problems, such as the stockpiling of Industrial Solid Waste,
With good economy and environmental benefit.
In addition, the utility model need not add other materials, the effect of extraction iron desulfurization can be reached, obtained magnetic production
Thing can have good economic benefit directly as steelmaking feed.
Obviously, above-described embodiment is only intended to clearly illustrate the utility model example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, other differences can also be made on the basis of the above description
The change or variation of form.There is no necessity and possibility to exhaust all the enbodiments.And thus amplify out aobvious and
Among the change or variation being clear to are still in the scope of protection of the utility model.
Claims (4)
- A kind of 1. system for comprehensively utilizing Industrial Solid Waste, it is characterised in that including：Mixing arrangement, exported provided with nonferrous metallurgy slag entrance, red mud entrance, carbide slag entrance and compound；Shaped device, is exported provided with compound entrance and pelletizing, and the compound of the compound entrance and the mixing arrangement goes out Mouth is connected；Oxidizing roasting device, provided with pelletizing entrance, oxidizing gas entrance and acid pellet export, the pelletizing entrance with it is described The pelletizing outlet of shaped device is connected；Reduction roasting device, is exported provided with acid pellet entrance, reducibility gas entrance and fragmentation pelletizing, and the acid pellet enters Mouth is connected with the acid pellet outlet of the oxidizing roasting device；Cooling device, exported provided with fragmentation pelletizing entrance and efflorescence material, the fragmentation pelletizing entrance and the reduction roasting device Fragmentation pelletizing outlet be connected；Concentration equipment, provided with efflorescence material entrance, magnetic powder outlet and namagnetic substance outlet, the efflorescence material entrance with it is described The efflorescence material outlet of cooling device is connected.
- 2. system according to claim 1, it is characterised in that also include：First breaker, provided with feed(raw material)inlet and powder outlet, the nonferrous metallurgy of the powder outlet and the mixing arrangement Slag entrance is connected.
- 3. system according to claim 1, it is characterised in that also include：Second breaker, provided with feed(raw material)inlet and powder outlet, the carbide slag of the powder outlet and the mixing arrangement enters Mouth is connected.
- 4. system according to claim 1, it is characterised in that also include：Drying unit, exported provided with feed(raw material)inlet and drying material, the drying material outlet and the red mud entrance of the mixing arrangement It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720553829.3U CN206828587U (en) | 2017-05-17 | 2017-05-17 | The system for comprehensively utilizing Industrial Solid Waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720553829.3U CN206828587U (en) | 2017-05-17 | 2017-05-17 | The system for comprehensively utilizing Industrial Solid Waste |
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| Publication Number | Publication Date |
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| CN206828587U true CN206828587U (en) | 2018-01-02 |
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ID=60772036
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720553829.3U Expired - Fee Related CN206828587U (en) | 2017-05-17 | 2017-05-17 | The system for comprehensively utilizing Industrial Solid Waste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099657A (en) * | 2017-05-17 | 2017-08-29 | 江苏省冶金设计院有限公司 | Comprehensively utilize the system and method for Industrial Solid Waste |
| CN108273830A (en) * | 2018-01-26 | 2018-07-13 | 中南大学 | A kind of Copper making typical case waste residue collaboration solidification/stabilization treatment method |
-
2017
- 2017-05-17 CN CN201720553829.3U patent/CN206828587U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099657A (en) * | 2017-05-17 | 2017-08-29 | 江苏省冶金设计院有限公司 | Comprehensively utilize the system and method for Industrial Solid Waste |
| CN108273830A (en) * | 2018-01-26 | 2018-07-13 | 中南大学 | A kind of Copper making typical case waste residue collaboration solidification/stabilization treatment method |
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