CN106698914A - Method for preparing inorganic mineral fibers from copper smelting slag and gangue through melting and heat-insulation treatment in electric furnace - Google Patents
Method for preparing inorganic mineral fibers from copper smelting slag and gangue through melting and heat-insulation treatment in electric furnace Download PDFInfo
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Abstract
The invention provides a method for preparing inorganic mineral fibers from copper smelting slag and gangue through melting and heat-insulation treatment in an electric furnace. The method is characterized in that in the process of preparation of the inorganic mineral fibers, molten copper smelting slag flows into an ore-smelting electric furnace; then gangue and a small amount of a slagging agent in a charge ratio is added into the electric furnace for melting and heat-insulation treatment; and the obtained mixture flows from the heat-insulation electric furnace to a four-roller fiber forming machine for preparation of the inorganic mineral fibers, and a byproduct, i.e., a copper-iron alloy product, is prepared through smelting of the electric furnace. According to the invention, the components and sensible heat of the gangue and copper smelting slag are made use of to convert the gangue and copper smelting slag into a series of products with high added values, so the method has the characteristics of low cost and high output; when the inorganic mineral fibers prepared from the two industrial wastes is used for production of heat insulation materials for buildings, exploitation of natural mineral fibers is reduced, and environmental and ecological destroy is lowered; the problem of wasting of resources is overcome by comprehensively utilizing carbon in the gangue and iron and copper in the copper slag; and the byproduct, i.e., copper-containing pig iron, can be used as a raw material for production of high-quality antibacterial stainless steel.
Description
Technical field
Comprehensive utilization new method is matched with gangue the present invention relates to a kind of copper smelting slag, the method that more particularly to a kind of copper metallurgy liquid slag prepares inorganic mineral fiber with addition of gangue electro-smelting insulation belongs to technical field of resource comprehensive utilization.
Background technology
In recent years, China's copper yield increases sharply, wherein about 97% is produced by pyrometallurgy, is calculated according to 2-3 tons of metallurgical slag of 1 ton of copper output, and copper smelting slag annual production is up to more than 11,000,000 tons, but its overall utilization is also less than 10%.
Gangue is the solid slag of generation during coal mining and utilization, is one of maximum trade waste of China's discharge capacity, accounts for a quarter of China's industrial solid wastes.According to statistics, about 3.8 hundred million tons annual of gangue discharge capacity of the whole nation, its comprehensive utilization ratio is 20% or so.The material of relevant department shows that the whole nation accumulative about 4,000,000,000 tons of the gangue stored up over the years takes up an area 1.2 ten thousand hectares.
The accumulation of copper smelting slag and gangue not only takes a large amount of soils, but also brings a series of environmental problems, and such as slag mountain overflow water makes underground water that ore deposit degree high, high rigidity is presented, and causes soil acid-base, crop production reduction is even had no harvest；Copper smelting slag typically contains the iron of 30-40%, and 0.5% or so copper is above the minimum mining grade of China's iron ore and copper mine, and a large amount of iron copper resources cannot be utilized effectively, causes to waste；After outdoor accumulation, often there is dieseling in gangue, and give off the gases such as a large amount of poisonous sulfur dioxide, hydrogen sulfide, nitrogen oxides, carbon monoxide and carbon dioxide for a long time, pollute surrounding enviroment, destroy the ecological balance.
Solid waste treatment is always problem of concern, and for many years, people are devoted to the research in terms of copper smelting slag and gangue comprehensive utilization always, and research and development technology direction mainly includes.
Aspect is utilized in copper smelting slag：Domestic some enterprises are backfilled using waste residue as three slag roadbed material, aggregate and engineering expects；Ye You enterprises mix manufacture slag brick using waste residue and lime, sand etc., do materials for wall；Also some enterprises waste residue is crushed, is sieved, magnetic separation, drying, carry out grinding, screening using ball mill, produce the ground steel slag that highly active mineral admixture is used as cement and concrete, the cement of 10-40% can be replaced；Also some enterprises produce mineral wool using copper smelting slag and reclaim valuable element copper therein and iron using copper smelting slag ore dressing.
Gangue comprehensive utilization aspect：Bastard coal masonry filling material, is primarily referred to as filling the architectural engineering land used of the low-lying districts such as cheuch, mining collapse area, or for filling railway, highway subgrade etc., or for backfilling coal mine gob and abandoned mine；Making coal gangue brick, technical process that is dry and being calcined is completed using the heat energy of the caloric value offer of gangue itself, and extra fuel is not required to substantially, and a small amount of coal is participated in during ability is to gangue only when gangue caloric value is relatively low；Cement is made, because the chemical composition of gangue and clay is close and containing a certain amount of charcoal and heat, alternative clay is directly incorporated into the yield of increase cement in clinker as the raw material of production cement or as mixing material；Coal gangue power generation, is the mutually unified most effective approach of society, environment, economic benefit during gangue is comprehensively utilized, also with the opera involving much singing and action of gangue；Aluminium salt is extracted, gangue typically contains 16%~36% aluminum oxide, is to prepare Al (OH)3、Al2O3、AlCl3Etc. the good resource of aluminium salt, but supply exceed demand because world's aluminum metal is long-term, and price is in low level, and aluminum oxide is extracted from gangue all the time by the serious restriction of cost.
Although copper smelting slag and method for comprehensive utilization of coal gangue are more, comprehensive utilization ratio is not high, and its reason is mainly that processing technological flow is complicated and cost is high, product market share is limited, fails to realize utilizing completely and producing secondary pollution etc..
For the deficiency that copper smelting slag and gangue comprehensive utilization process technology are present, metallargist actively researches and develops copper smelting slag and the effective comprehensive Utilization Ways of gangue.Copper smelting slag and gangue prepare inorganic mineral fiber and are applied to manufacture building thermal insulation material, are new technologies developed in recent years.
Artificial inorganic mineral fibres is a kind of material of the replacement natural mineral fiber for after being melted with addition of one or more slag former using industrial solid castoff, being prepared using specialized processes, is widely used in insulation, absorptive product production.At present due to the high speed development of China's economic, the demand to industrial heat preservation, building heat preservation and various materials is very big.Counted according to relevant departments, although influenceed by government regulation, but national 8,601,300,000,000 yuan of investment in real estate development in 2013, increase by 19.8% on a year-on-year basis；Housing construction and newly-started area increase by more than 10% on year-on-year basis, and this is a huge numeral.Mineral wool abatvoix has superior performance, is widely used in finishing, the decoration of large scale business facility and communal facility, and 2,013 1.2 hundred million square metres of annual consumptions increase by 20.5% on a year-on-year basis.According to country《Building energy-saving standard》Requirement, so huge building quantity will provide the huge market space for insulation material industry, also be the market demand that the inorganic mineral fiber product of the project construction is huge.
Current domestic production is generally small enterprise using the enterprise of inorganic mineral fiber product for insulation, sound-absorbing material, the technology for commonly using is using small-sized blast furnace, oxygen-enriched melt raw material is blown as fuel adds with coke, then inorganic mineral fiber is made using task equipment.The applicating history of this technique existing several years, but there is a problem that some can not be ignored always, the development and popularization of this technology are directly affected, it is mainly showed is.
（1）Cold burden enters that stove, energy consumption be big, high cost.
Small-sized blast furnace metallurgy industry solid waste is cold burden and enters stove, and one ton of inorganic mineral fiber of production need to consume 500-800kg coke, high energy consumption；In addition, plus expenses such as oxygen generation systems, its total cost is higher, current technology production inorganic mineral fiber is substantially at meagre profit or the state that breaks even.
（2）Equipment is small, and production scale is limited.
The small-sized blast furnace metallurgy industry solid waste production main smelting equipment of inorganic mineral fiber is usually the small-sized blast furnaces of 1200 × 3000mm of ∮, heat size about 3.4m3, produce quantity of slag 2-2.5 ton hours, it is difficult to form a large amount of trade wastes for accumulating of Produce on a large scale treatment.
（3）Process equipment falls behind, seriously polluted.
Small-sized blast furnace manufacture inorganic mineral fiber melt raw material process is to blow oxygen-enriched as fuel adds with coke, is carried out under the conditions of oxidizing atmosphere.The NO of flue gas under high oxidation atmosphere burning conditionXAbout 600-800 mg/m3；SO2Because raw materials for metallurgy difference averagely reaches 14.28g/m3, processed by generality, still there is 3000mg/m3Left and right concentration of emission.Again because body of heater it is small, waste gas be unable to economic recovery utilization, sulfur dioxide, nitrogen oxides average emission concentration reach exceed discharging standards, year total release it is very huge, severe contamination environment.
（4）Smelting temperature is limited, product quality is of low grade.
Due to technique limitation in itself, typically 1500 or so, not thoroughly, Si, Al equal size are relatively low in causing fiber, the inorganic requirement for meeting expensive goods to inorganic mineral fiber for the fusing of refractory metal oxide for fusion temperature.
（3）Iron value is low in carbon and copper smelting slag in gangue.
Existing gangue is prepared in inorfil technology, and the fixed carbon in gangue has only served the effect of combustion heating, is that most basic low value is utilized；Iron and copper fail to realize effectively comprehensive utilization in copper smelting slag.
High energy consumption, the problem that pollution is heavy, benefit is low that inorganic ore deposit fiber is present are prepared for the fusing copper smelting slag of blast furnace in the prior art and gangue, the manufacturer of this area can urgently develop a kind of novel technique for being efficiently modified above-mentioned deficiency.
The content of the invention
The purpose of the present invention be that solve prior art exist above mentioned problem, by study repeatedly with after lot of experiments, there is provided a kind of method that copper metallurgy liquid slag prepares inorganic mineral fiber with addition of gangue electro-smelting insulation.The present invention efficiently utilizes gangue and copper smelting slag composition and sensible heat, transforms into a series of high value added product, the characteristics of with inexpensive high production.The inorganic mineral fiber production building thermal insulation material prepared using both trade wastes effectively reduces the exploitation of natural mineral fiber mineral products, reduces the destruction to environment and ecology；Asbestos mineral fiber can be replaced, production and the infringement of Environmental insults' health is reduced；The building thermal insulation material fire-protection rating being made is high, reduces disaster hidden-trouble.In gangue in carbon and copper ashes iron and copper comprehensive utilization, solve problem of resource waste；The byproduct cupric pig iron can improve Project Economy Benefit and influence power as the production high-quality stainless steel of resistance to bacterium raw material.
The technical scheme that the present invention is given is：A kind of method that copper metallurgy liquid slag prepares inorganic mineral fiber with addition of gangue electro-smelting insulation, is characterized in.
The Main Ingredients and Appearance of the copper metallurgy liquid slag（Quality %）For：SiO2
35.49~38.66%, Fe
35.87~40.27%, MgO 1.89~3.10%, CaO 4.61~7.55%, Al2O3
1.86~2.06%, Cu
0.482~0.553%.
The Main Ingredients and Appearance of the gangue（Quality %）For：Fixed carbon content 10.30~12.06%；Content of ashes 76.81~80.31%, wherein SiO2
60.25~65.25%, Al2O320.68~22.06%, Fe2O37.33~9.81%.In inorganic mineral fiber process of the test is prepared, the copper smelting slag of melting is flowed into ore-smelting electric furnace, then gangue and a small amount of slag former lime are added in electric furnace according to charge ratio carries out melting insulation, the output byproduct cupric stainless steel of resistance to bacterium while fiber is prepared.
The use of raw material proportioning is copper smelting slag：Gangue：Lime=100~130：100~105：5~8, fusing 3 hours is smelted in 1000KVA ore-smelting electric furnaces；After smelting terminates, copper-iron alloy releases ingot casting, and slag flows into the hot electric mantle heater of 200KVA ore deposits, then feeds JLX2.5-300 type four-roller fiberizers with 4000-4500kg/h flow continuous constant flows from electric mantle heater and prepare inorganic mineral fiber.In 1550~1600 ± 50 DEG C of liquid slag holding temperature, the pool of liquid slag viscosity 57~71, the m/s of fiberizer linear velocity 180, make fine under the conditions of 0.7~0.8MPa of high-pressure blast blast, gained fiber product leading indicator is.
Fiber Main Ingredients and Appearance SiO253.81~56.74%, Al2O310.85~15.22%, CaO
11.96~13.91%, MgO 4.62~6.96%, FeO 7.87~9.62%；Fiber physical and chemical index is average 6.95~9.13 μm of diameter, draw ratio 108~120,1720~1980Mpa of tensile strength, pH value 7.81~7.92, and fiber is into fine rate 75.14~76.31%.Fiber physical and chemical index substantially meets standard requirement.
Electric furnace smelting obtains byproduct copper-iron alloy product simultaneously, copper-iron alloy composition has Cu 1.82~2.10%, Si 0.57~0.82%, C 0.22~0.30% in leading indicator, Fe ﹥ 95%, copper recovery 76.33~80.26%, iron recovery 94.88~96.05%, alloy composition meets resistance to bacterium stainless steel standard requirement.
Compared with prior art, the beneficial effect of present invention acquirement is.
（1）Make full use of the beneficial system fibre composition of copper smelting slag and gangue.
The composition of artificial thermal-insulation material inorganic mineral fiber is generally SiO2：40-60%, Al2O3：10-15%, MgO+CaO：10-25%, Fe：5-10%.Gangue Main Ingredients and Appearance is SiO2And Al2O3, copper smelting slag Main Ingredients and Appearance is SiO2、Fe2O3And CaO, the two is effectively matched, you can produce satisfactory mineral fiber.
（2）It is incubated using warm sludge melting using ore-smelting electric furnace.
Copper metallurgy warm sludge is taken to flow directly into ore-smelting electric furnace, then adding a certain amount of gangue carries out melting insulation；The present invention has four aspect benefits：In a first aspect, the process makes full use sensible heat of copper smelting slag, greatly reduces the fine cost of system, product competitiveness is enhanced；Second aspect, the use of high-power ore-smelting electric furnace, drastically increases material handling capacity, is capable of achieving product scale；The third aspect, ore-smelting electric furnace is smelted can improve slag temperature, high-melting-point Si, Al oxide is fully melted, it is ensured that and improve fiber product quality；Fourth aspect is to have accomplished to be polluted from source reduction sulfur dioxide, discharged nitrous oxides.The present invention uses electro-smelting, and smelting process no longer adds the sulfur-bearing reducing agent such as coke.Additionally, different from blast furnace oxygen-enriched combusting coke, electric furnace smelting is carried out under strongly reducing atmosphere, is not N2Oxidation at high temperature generates NOxCreate conditions, therefore the discharge of nitrogen oxides and sulfur dioxide is also cut down from source.
（3）Carbon is fully used in copper and iron and gangue in copper smelting slag.
Copper smelting slag typically contains the copper of 30-40% Tie ﹑ 0.5% or so, and gangue typically contains the fixed carbon of 10-20%, and generally it is fallen as fuel combustion.The present invention devises by the use of this part carbon and the copper and iron in copper ashes is reduced into the cupric stainless steel of resistance to bacterium byproduct in fusion process as reducing agent.The value of this part copper and iron stainless steel and iron of resistance to bacterium product can offset the energy cost of fusion process substantially, so as to the manufacturing cost of inorfil is greatly reduced, improve the whole economic efficiency of project.
Specific embodiment
Technical scheme is described in detail with reference to instantiation.
Embodiment 1.
Pilot-plant test copper smelting slag produces copper ashes by Fushun Failing In Hongtoushan mining industry Co., Ltd, and the copper smelting slag Main Ingredients and Appearance is：SiO2
36.82%, Fe 38.52%, MgO 2.63%, CaO7.55%, Al2O32.06%, Cu0.553%.Gangue is the gangue of Datong coal industry Co., Ltd, fixed carbon content 10.30%；Content of ashes 78.69%, wherein SiO2
65.25%, Al2O322.06%, Fe2O39.81%.In inorganic mineral fiber process of the test is prepared, the copper smelting slag of melting is flowed into ore-smelting electric furnace in a certain way, then gangue and a small amount of slag former lime are added in electric furnace according to charge ratio carries out melting insulation, the output byproduct cupric stainless steel of resistance to bacterium while fiber is prepared.
Pilot-plant test is copper smelting slag using raw material proportioning：Gangue：Lime=100：100：5, fusing 3 hours is smelted in 1000KVA ore-smelting electric furnaces；After smelting terminates, copper-iron alloy releases ingot casting, and slag flows into the hot electric mantle heater of 200KVA ore deposits, then feeds JLX2.5-300 type four-roller fiberizers with 4000-4500kg/h flow continuous constant flows from electric mantle heater and prepare inorganic mineral fiber.Moor in 1550 ± 50 DEG C of liquid slag holding temperature, liquid slag viscosity 57, the m/s of fiberizer linear velocity 180, make fine under the conditions of high-pressure blast blast 0.8MPa, gained fiber product leading indicator is.
Fiber Main Ingredients and Appearance SiO2 55.37%、Al2O312.56%、CaO12.35%、MgO
6.96%、FeO7.87%；Fiber physical and chemical index is average 8.15 μm of diameter, draw ratio 110, the Mpa of tensile strength 1760, pH value 7.86, and fiber is into fine rate 75.14%.Fiber physical and chemical index substantially meets standard requirement.
Electric furnace smelting obtains byproduct copper-iron alloy product simultaneously, and copper-iron alloy composition has Cu 2.10%, Si 0.82%, C 0.27% in leading indicator, and Fe ﹥ 95%, copper recovery 80.26%, iron recovery 96.05%, alloy composition meets resistance to bacterium stainless steel standard requirement.
Embodiment 2.
Pilot-plant test copper smelting slag produces copper ashes by Tongling Nonferrous Metals metal group, and the copper smelting slag Main Ingredients and Appearance is：SiO2
38.66%, Fe 40.27%, MgO 1.89%, CaO4.61%, Al2O31.86%, Cu0.51%.Gangue is the gangue in Inner Mongol Erdos colliery, fixed carbon content 11.09%；Content of ashes 80.31%, wherein SiO2
56.29%, Al2O331.06%, Fe2O37.33%.In inorganic mineral fiber process of the test is prepared, the copper smelting slag of melting is flowed into ore-smelting electric furnace in a certain way, then gangue and a small amount of slag former lime are added in electric furnace according to charge ratio carries out melting insulation, the output byproduct cupric stainless steel of resistance to bacterium while fiber is prepared.
Pilot-plant test is copper smelting slag using raw material proportioning：Gangue：Lime=130：100：8, fusing 3 hours is smelted in 1000KVA ore-smelting electric furnaces；After smelting terminates, copper-iron alloy releases ingot casting, and slag flows into the hot electric mantle heater of 200KVA ore deposits, then so that 4000-4500kg/h flows are continuous, constant flow feeds JLX2.5-300 type four-roller fiberizers and prepares inorganic mineral fiber from electric mantle heater.Moor in 1600 ± 50 DEG C of liquid slag holding temperature, liquid slag viscosity 71, the m/s of fiberizer linear velocity 180, make fine under the conditions of high-pressure blast blast 0.7MPa, gained fiber product leading indicator is.
Fiber Main Ingredients and Appearance SiO2 53.81%、Al2O315.22%、CaO11.96%、MgO
5.18%、FeO9.62%；Fiber physical and chemical index is average 6.95 μm of diameter, draw ratio 120, the Mpa of tensile strength 1980, pH value 7.92, and into fine rate 76.31%, fiber physical and chemical index substantially meets standard requirement to fiber.
Electric furnace smelting obtains byproduct copper-iron alloy product simultaneously, and copper-iron alloy composition has Cu 1.89%, Si 0.73%, C 0.30% in leading indicator, and Fe ﹥ 95%, copper recovery 78.91%, iron recovery 94.88% meets resistance to bacterium stainless steel standard requirement.
Embodiment 3.
Pilot-plant test copper smelting slag produces copper ashes by Daye, hubei Province nonferrous metals companies, and the copper smelting slag Main Ingredients and Appearance is：SiO2
35.49%, Fe 35.87%, MgO 3.10%, CaO6.21%, Al2O32.06%, Cu0.482%.Gangue is the gangue in Heilungkiang Qitaihe colliery, fixed carbon content 12.06%；Content of ashes 76.81.31%, wherein SiO2
60.25%, Al2O320.68%, Fe2O39.81%.In inorganic mineral fiber process of the test is prepared, the copper smelting slag of melting is flowed into ore-smelting electric furnace in a certain way, then gangue and a small amount of slag former lime are added in electric furnace according to charge ratio carries out melting insulation, the output byproduct cupric stainless steel of resistance to bacterium while fiber is prepared.
Pilot-plant test is copper smelting slag using raw material proportioning：Gangue：Lime=100：105：8, fusing 3 hours is smelted in 1000KVA ore-smelting electric furnaces；After smelting terminates, copper-iron alloy releases ingot casting, and slag flows into the hot electric mantle heater of 200KVA ore deposits, then so that 4000-4500kg/h flows are continuous, constant flow feeds JLX2.5-300 type four-roller fiberizers and prepares inorganic mineral fiber from electric mantle heater.Moor in 1550 ± 50 DEG C of liquid slag holding temperature, liquid slag viscosity 58, the m/s of fiberizer linear velocity 180, make fine under the conditions of high-pressure blast blast 0.7MPa, gained fiber product leading indicator is.
Fiber Main Ingredients and Appearance SiO2 56.74%、Al2O310.85%、CaO13.91%、MgO
4.62%、FeO8.17%；Fiber physical and chemical index is average 9.13 μm of diameter, draw ratio 108, the Mpa of tensile strength 1720, pH value 7.81, and into fine rate 75.60%, fiber physical and chemical index substantially meets standard requirement to fiber.
Electric furnace smelting obtains byproduct copper-iron alloy product simultaneously, and copper-iron alloy composition has Cu 1.82%, Si 0.57%, C 0.22% in leading indicator, and Fe ﹥ 95%, copper recovery 76.33%, iron recovery 95.16% meets resistance to bacterium stainless steel standard requirement.
Claims (4)
1. a kind of method that copper metallurgy liquid slag prepares inorganic mineral fiber with addition of gangue electro-smelting insulation, it is characterised in that：
The Main Ingredients and Appearance of the copper metallurgy liquid slag（Quality %）For：SiO2
35.49~38.66%, Fe 35.87~40.27%, MgO 1.89~3.10%, CaO 4.61~7.55%, Al2O3 1.86~2.06%, Cu 0.482~0.553%；
The Main Ingredients and Appearance of the gangue（Quality %）For：Fixed carbon content 10.30~12.06%；Content of ashes 76.81~80.31%, wherein SiO260.25~65.25%, Al2O320.68~22.06%, Fe2O37.33~9.81%, during inorganic mineral fiber is prepared, the copper smelting slag of melting is flowed into ore-smelting electric furnace, and then gangue and a small amount of slag former lime are added in electric furnace according to charge ratio carries out melting insulation, the output byproduct cupric stainless steel of resistance to bacterium while fiber is prepared；
The use of raw material proportioning is copper smelting slag：Gangue：Lime=100~130：100~105：5~8, fusing 3 hours is smelted in 1000KVA ore-smelting electric furnaces, after smelting terminates, copper-iron alloy releases ingot casting, slag flows into the hot electric mantle heater of 200KVA ore deposits, JLX2.5-300 type four-roller fiberizers are fed with 4000-4500kg/h flow continuous constant flows from electric mantle heater again and prepares inorganic mineral fiber, in 1550~1600 ± 50 DEG C of liquid slag holding temperature, the pool of liquid slag viscosity 57~71, the m/s of fiberizer linear velocity 180, make fine under the conditions of 0.7~0.8MPa of high-pressure blast blast, gained fiber product leading indicator is：
Fiber Main Ingredients and Appearance SiO2
53.81~56.74%, Al2O310.85~15.22%, CaO 11.96~13.91%, MgO 4.62~6.96%, FeO 7.87~9.62%；Fiber physical and chemical index is average 6.95~9.13 μm of diameter, draw ratio 108~120,1720~1980Mpa of tensile strength, pH value 7.81~7.92, and into fine rate 75.14~76.31%, fiber physical and chemical index substantially meets standard requirement to fiber；
Electric furnace smelting obtains byproduct copper-iron alloy product simultaneously, copper-iron alloy composition has Cu 1.82~2.10%, Si 0.57~0.82%, C 0.22~0.30% in leading indicator, Fe ﹥ 95%, copper recovery 76.33~80.26%, iron recovery 94.88~96.05%, alloy composition meets resistance to bacterium stainless steel standard requirement.
2. the method that copper metallurgy liquid slag according to claim 1 prepares inorganic mineral fiber with addition of gangue electro-smelting insulation, it is characterised in that
Described copper smelting slag produces copper ashes by Fushun Failing In Hongtoushan mining industry Co., Ltd, and the copper smelting slag Main Ingredients and Appearance is：SiO236.82%, Fe 38.52%, MgO 2.63%, CaO7.55%, Al2O32.06%, Cu0.553%, gangue are the gangue of Datong coal industry Co., Ltd, fixed carbon content 10.30%, wherein content of ashes 78.69%, SiO265.25%, Al2O322.06%, Fe2O39.81%, in inorganic mineral fiber process of the test is prepared, the copper smelting slag of melting is flowed into ore-smelting electric furnace, and then gangue and a small amount of slag former lime are added in electric furnace according to charge ratio carries out melting insulation, the output byproduct cupric stainless steel of resistance to bacterium while fiber is prepared；
The use of raw material proportioning is copper smelting slag：Gangue：Lime=100：100：5, fusing 3 hours is smelted in 1000KVA ore-smelting electric furnaces, after smelting terminates, copper-iron alloy releases ingot casting, slag flows into the hot electric mantle heater of 200KVA ore deposits, then feeds JLX2.5-300 type four-roller fiberizers with 4000-4500kg/h flow continuous constant flows from electric mantle heater and prepare inorganic mineral fiber, moors in 1550 ± 50 DEG C of liquid slag holding temperature, liquid slag viscosity 57, the m/s of fiberizer linear velocity 180, make fine under the conditions of high-pressure blast blast 0.8MPa, gained fiber product leading indicator is：
Fiber Main Ingredients and Appearance SiO2
55.37%、Al2O312.56%、CaO12.35%、MgO 6.96%、FeO7.87%；Fiber physical and chemical index is average 8.15 μm of diameter, draw ratio 110, the Mpa of tensile strength 1760, pH value 7.86, and into fine rate 75.14%, fiber physical and chemical index substantially meets standard requirement to fiber；
Electric furnace smelting obtains byproduct copper-iron alloy product simultaneously, and copper-iron alloy composition has Cu 2.10%, Si 0.82%, C in leading indicator
0.27%, Fe ﹥ 95%, copper recovery 80.26%, iron recovery 96.05%, alloy composition meets resistance to bacterium stainless steel standard requirement.
3. the method that copper metallurgy liquid slag according to claim 1 prepares inorganic mineral fiber with addition of gangue electro-smelting insulation, it is characterised in that
Described copper smelting slag produces copper ashes by Tongling Nonferrous Metals metal group, and the copper smelting slag Main Ingredients and Appearance is：SiO238.66%, Fe 40.27%, MgO 1.89%, CaO4.61%, Al2O31.86%, Cu0.51%, gangue are the gangue in Inner Mongol Erdos colliery, fixed carbon content 11.09%；Content of ashes 80.31%, wherein SiO256.29%, Al2O331.06%, Fe2O37.33%, in inorganic mineral fiber process of the test is prepared, the copper smelting slag of melting is flowed into ore-smelting electric furnace, then gangue and a small amount of slag former lime are added in electric furnace according to charge ratio carries out melting insulation, the output byproduct cupric stainless steel of resistance to bacterium while fiber is prepared, is copper smelting slag using raw material proportioning：Gangue：Lime=130：100：8, fusing 3 hours is smelted in 1000KVA ore-smelting electric furnaces, after smelting terminates, copper-iron alloy releases ingot casting, slag flows into the hot electric mantle heater of 200KVA ore deposits, then so that 4000-4500kg/h flows are continuous, constant flow feeds JLX2.5-300 type four-roller fiberizers and prepares inorganic mineral fiber from electric mantle heater, moors in 1600 ± 50 DEG C of liquid slag holding temperature, liquid slag viscosity 71, the m/s of fiberizer linear velocity 180, make fine under the conditions of high-pressure blast blast 0.7MPa, gained fiber product leading indicator is：
Fiber Main Ingredients and Appearance SiO2
53.81%、Al2O315.22%、CaO11.96%、MgO 5.18%、FeO9.62%；Fiber physical and chemical index is average 6.95 μm of diameter, draw ratio 120, the Mpa of tensile strength 1980, pH value 7.92, and into fine rate 76.31%, fiber physical and chemical index substantially meets standard requirement to fiber；
Electric furnace smelting obtains byproduct copper-iron alloy product simultaneously, and copper-iron alloy composition has Cu 1.89%, Si 0.73%, C in leading indicator
0.30%, Fe ﹥ 95%, copper recovery 78.91%, iron recovery 94.88% meets resistance to bacterium stainless steel standard requirement.
4. the method that copper metallurgy liquid slag according to claim 1 prepares inorganic mineral fiber with addition of gangue electro-smelting insulation, it is characterised in that
Described copper smelting slag produces copper ashes by Daye, hubei Province nonferrous metals companies, and the copper smelting slag Main Ingredients and Appearance is：SiO235.49%, Fe 35.87%, MgO 3.10%, CaO6.21%, Al2O32.06%, Cu0.482%, gangue are the gangue in Heilungkiang Qitaihe colliery, fixed carbon content 12.06%；Content of ashes 76.81.31%, wherein SiO260.25%, Al2O320.68%, Fe2O39.81%, in inorganic mineral fiber process of the test is prepared, the copper smelting slag of melting is flowed into ore-smelting electric furnace, and then gangue and a small amount of slag former lime are added in electric furnace according to charge ratio carries out melting insulation, the output byproduct cupric stainless steel of resistance to bacterium while fiber is prepared；
The use of raw material proportioning is copper smelting slag：Gangue：Lime=100：105：8, fusing 3 hours is smelted in 1000KVA ore-smelting electric furnaces；After smelting terminates, copper-iron alloy releases ingot casting, slag flows into the hot electric mantle heater of 200KVA ore deposits, again so that 4000-4500kg/h flows are continuous, constant flow feeds JLX2.5-300 type four-roller fiberizers and prepares inorganic mineral fiber from electric mantle heater, moor in 1550 ± 50 DEG C of liquid slag holding temperature, liquid slag viscosity 58, the m/s of fiberizer linear velocity 180, make fine under the conditions of high-pressure blast blast 0.7MPa, gained fiber product leading indicator is：
Fiber Main Ingredients and Appearance SiO2
56.74%、Al2O310.85%、CaO13.91%、MgO 4.62%、FeO8.17%；Fiber physical and chemical index is average 9.13 μm of diameter, draw ratio 108, the Mpa of tensile strength 1720, pH value 7.81, and into fine rate 75.60%, fiber physical and chemical index substantially meets standard requirement to fiber；
Electric furnace smelting obtains byproduct copper-iron alloy product simultaneously, and copper-iron alloy composition has Cu 1.82%, Si 0.57%, C in leading indicator
0.22%, Fe ﹥ 95%, copper recovery 76.33%, iron recovery 95.16% meets resistance to bacterium stainless steel standard requirement.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022215695A1 (en) * | 2021-04-06 | 2022-10-13 | 新日本繊維株式会社 | Alkali-resistant noncrystalline inorganic composition and fiber thereof |
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| JPS632841A (en) * | 1986-06-20 | 1988-01-07 | オウトクンプ オイ | Utilization of slag from metal production |
| CN102586609A (en) * | 2012-03-15 | 2012-07-18 | 北京大学 | Method for comprehensively utilizing copper slag |
| CN103992031A (en) * | 2014-05-12 | 2014-08-20 | 山西聚义宝鑫新材料有限公司 | Method of preparing inorganic mineral fibre by smelting gangue and laterite-nickel ore by utilization of ore-smelting electric furnace |
| CN104529147A (en) * | 2014-12-28 | 2015-04-22 | 江西自立环保科技有限公司 | Method for producing mineral wool fiber by using high-temperature liquid waste slags of metallurgical furnace as raw material |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS632841A (en) * | 1986-06-20 | 1988-01-07 | オウトクンプ オイ | Utilization of slag from metal production |
| CN102586609A (en) * | 2012-03-15 | 2012-07-18 | 北京大学 | Method for comprehensively utilizing copper slag |
| CN103992031A (en) * | 2014-05-12 | 2014-08-20 | 山西聚义宝鑫新材料有限公司 | Method of preparing inorganic mineral fibre by smelting gangue and laterite-nickel ore by utilization of ore-smelting electric furnace |
| CN104529147A (en) * | 2014-12-28 | 2015-04-22 | 江西自立环保科技有限公司 | Method for producing mineral wool fiber by using high-temperature liquid waste slags of metallurgical furnace as raw material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022215695A1 (en) * | 2021-04-06 | 2022-10-13 | 新日本繊維株式会社 | Alkali-resistant noncrystalline inorganic composition and fiber thereof |
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Application publication date: 20170524 |