CN102583996A - Method for manufacturing rock wool by iron ore tailings - Google Patents
Method for manufacturing rock wool by iron ore tailings Download PDFInfo
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- CN102583996A CN102583996A CN2012100539107A CN201210053910A CN102583996A CN 102583996 A CN102583996 A CN 102583996A CN 2012100539107 A CN2012100539107 A CN 2012100539107A CN 201210053910 A CN201210053910 A CN 201210053910A CN 102583996 A CN102583996 A CN 102583996A
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Abstract
The invention discloses a method for manufacturing rock wool by iron ore tailings. According to the method, the iron ore tailings serve as raw materials for manufacturing the rock wool. According to the invention, the tailings generated by iron extraction and smelting enterprises are used for manufacturing the rock wool, and the iron ore tailings are sufficiently utilized, so that wastes generated by the iron extraction and smelting enterprises are recycled, and the situation of only utilizing natural resources such as basalt or diabase to manufacture the rock wool is changed, therefore, production resources of the rock wool are expanded to a large extent so as to be beneficial to saving the natural resources; and the aim of energy conservation and emission reduction of the enterprises is achieved by changing the wastes generated by the iron ore enterprises into secondary resources to be used.
Description
Technical field
The present invention relates to a kind of manufacture of mineral.
Background technology
Iron And Steel Industry is the important foundation industry of national economy, comprises production processes such as mining, ore dressing, sintering, coking, ironmaking, steel-making, steel rolling, metal products and auxiliary material.China's iron ore YO is increased to 10.7 hundred million tons from 4.2 hundred million tons; Average annual growth by 20.6%; Strengthened the resource base of China's Iron And Steel Industry development; The socio-economic development needs have been satisfied effectively, for industries such as building, machinery, automobile, household electrical appliances, shipbuilding and fast development of national economy provide important starting material guarantee.Yet along with constant development of economy, the Iron And Steel Industry energy-saving and emission-reduction become one of vital task of sustainable development of iron and steel industry, and the iron ore mine that produces in blast-furnace slag that wherein produces in the smelting process and the mining process becomes the most unmanageable solid-state castoff.
As the blast-furnace slag of one of refuse in the Iron And Steel Industry, major part is used to the slakin cotton, has realized utilization of waste material basically.The staple shape inorganic fibre that blast-furnace slag is processed through technologies such as fusing, employing supercentrifugal process or blowing processes.It has light weight, thermal conductivity little, do not burn, mothproof, inexpensive, erosion resistance, characteristics such as chemicalstability is good, sound absorbing capabilities is good.It is stuffed heat insulated etc. to can be used for filling thermal insulation, sound absorption, sound insulation, oxygenerator, freezer cold insulation and the various heat power equipment of buildings.
The chemical ingredients of Blast Furnace Ore slag wool:
MK＝(SiO
2+Al
2O
3)/(CaO+MgO)。
By finding out in the last chart, the characteristics of blast-furnace slag cottonizing composition are SiO
2, Al
2O
3, CaO and MgO the content sum up to 90%～95%, and Fe
2O
3With the content sum of FeO less than 1%, its acidity quotient of slag wool (MK) that therefore utilizes blast-furnace slag to process generally can only remain on about 1.2, and is difficult to surpass 1.3, if will further improve the acidity quotient of slag wool, just must improve SiO in the melt
2And Al
2O
3Content, the content of CaO and MgO is correspondingly reduced, under the lower situation of iron level, the viscosity of blast-furnace slag melt is increased, to such an extent as to be difficult to guarantee the quality of slag wool fiber.Contain the lower blast-furnace slag melt of FeO, when its acidity quotient (MK)=1.2 left and right sides, become to have wide and stable range of viscosities under the fine temperature in the best; Even a stream burst temperature fluctuates 100 ℃ up and down in this case, its fiber quality with become fine rate also can receive very big influence, still; Along with acidity quotient progressively improves; The stability meeting variation of blast-furnace slag melt is to the also improve thereupon of susceptibility of temperature variation, as long as temperature slightly fluctuates; Variation by a relatively large margin will take place in its viscosity, even cause the consequence that can't become fine.
Slag wool should not use in wet environment, especially Ying Shenyong in the cold insulation engineering.In the cold insulation engineering; Direction of heat flow be from the outside to inner mobile, opposite with the heat insulating work direction of heat flow, extraneous moisture will infiltrate cold insulation material inside with hot-fluid; And reduce and dewfall condenses into water with temperature; If use slag wool herein, its fiber is aquation and being destroyed gradually, has reduced the work-ing life of cold insulation layer.And its temperature tolerance and erosion resistance are also relatively poor.
As fire-retardant heat-insulation material, slag wool has been replaced the part rock wool at construction field.Rock wool is to be the puffy short glass fibre that raw material is processed with natural basalt or diabase, need utilize a large amount of natural resourcess to produce, and therefore can produce very big destruction to physical environment.
The characteristics of Irish touchstone and diabase Chemical Composition are: SiO
2, Al
2O
3, CaO and MgO the content sum be 77%～83%, lower by about 10% than blast furnace slag, and Fe
2O
3With FeO content sum on average about 11%, Gao Shike is ten several times of ferriferous oxide content in the blast-furnace slag up to 17%, and the acidity quotient of rock wool (MK) is generally greater than 1.5, even can use safer up to more than 2.0.Rock wool also belongs to the silicate product, and variation is very little after meeting water, makes rock wool have water tolerance preferably.And the rock wool high thermal resistance is strong, and use temperature can be up to more than 800 ℃, and its eutectic point is 1265 ℃, and its softening temperature more is applicable to hygrothermal environment still up to 900～1000 ℃.Rock wool do not have more sulphur source, thereby it is to the metal non-corrosiveness except that being brought into the Determination of Trace Sulfur by coke when the melting.
Increase rapidly and China's iron ore is average annual, and in the recovery process of iron ore, because the iron ore disseminated grain size is thin; In order to reach the purpose of monomer dissociation; Need be with the iron ore stone mill very thin, could the ferro element in the ore be sorted out, then pile up like a mountain as the iron ore mine of one of refuse in the Iron And Steel Industry; And iron ore mine than the quantity of blast-furnace slag Duo many, also not utilization of waste material method preferably and approach so far.Therefore iron ore mine generally can be discharged in the mine tailing storehouse and deposit, and soil pollution, land deterioration and vegetation deterioration that the mine tailing storehouse of accumulation can cause this surrounding area have caused serious detrimentally affect to peripheral ecological environment.If it is too high that mine tailing is piled up, the phenomenon of caving in also appears easily, there is very big potential safety hazard in peripheral staff.And, pile up iron ore mine and taken a large amount of land resources along with the continuous increase of iron ore mine amount.The produced quantity of adding iron ore constantly increases, and the mine tailing accumulation is more and more, and how handling iron ore mine has rationally and effectively become one of great social concern.
Summary of the invention
Technical problem to be solved by this invention provides a kind of iron ore mine that utilizes of iron ore mine recycling of can realizing and makes the method for rock wool.
For solving the problems of the technologies described above, technical scheme of the present invention is: utilize iron ore mine to make the method for rock wool, utilize iron ore mine as the starting material of making rock wool.
As optimized technical scheme, the method for utilizing iron ore mine to make rock wool may further comprise the steps: with the iron ore mine high temperature melting, process rock wool fibers through being centrifuged into fine machine.
As optimized technical scheme, before the iron ore mine high temperature melting, earlier with iron ore mine compressed moulding and dry.
As optimized technical scheme, add sticker before the said iron ore mine compressed moulding.
As optimized technical scheme, said sticker is a cement.
As optimized technical scheme, said iron ore mine compressed moulding is coal briquette shape or honeycomb coaly.
As the improvement to technique scheme, said high temperature melting is carried out in cupola furnace, and fuel is coke, and Heating temperature is 1300-1500 ℃.
Owing to adopted technique scheme, utilize iron ore mine to make the method for rock wool, utilize iron ore mine as the starting material of making rock wool; The invention has the beneficial effects as follows: the mine tailing that iron and steel is extracted smelting enterprise's generation is processed rock wool; Utilize iron ore mine fully, realized the recycling of iron ore smelting enterprise industry rubbish, changed the present situation that natural resourcess such as only using Irish touchstone or diabase is made rock wool; The resources of production of rock wool have been expanded to a great extent; Help to practice thrift natural resources, the refuse that simultaneously iron ore enterprise is produced becomes the secondary resource utilization, has reached the purpose that industry energy conservation reduces discharging.
Embodiment
In the detailed description below, only some example embodiment of the present invention has been described through the mode of explanation.Undoubtedly, those of ordinary skill in the art can recognize, under situation without departing from the spirit and scope of the present invention, can revise described embodiment with various mode.
Through chemical analysis, the chemical ingredients of iron ore mine:
And main raw material of rock wool and chemical ingredients are as shown in the table:
Comparison through iron ore mine and rock wool main raw material and chemical ingredients is visible; The chemical ingredients of iron ore mine, the content of chemical ingredients and acidity quotient are approaching with the relevant parameter of rock wool respectively; And the acidity quotient of iron ore mine can guarantee the erosion resistance of its use all greater than the acidity quotient of slag wool, makes its performance more level off to rock wool; Therefore it is feasible utilizing the technology that iron ore mine is processed into rock wool; To can expand the rock wool resources of production to a great extent after implementing, can the refuse that the iron ore industry produces be become the secondary resource utilization simultaneously, reach the purpose that industry energy conservation reduces discharging.
Utilize iron ore mine to make the method for rock wool, utilize iron ore mine in the manufacture of mineral of present embodiment as the starting material of making rock wool.
The method of utilizing iron ore mine to make rock wool may further comprise the steps:
Step 1, in iron ore mine, add cement as sticker; To increase the cohesive force between the iron ore mine powder; Be convenient to the enforcement of subsequent technique; Utilizing water to mix iron ore mine that mixes and cement then, utilize installation for high pressure compression with iron ore mine and cement compressed moulding and carry out drying again, can be the block of coal briquette shape or honeycomb coaly with its compressed moulding generally.
Step 2, carry out high temperature melting to the block of coal briquette shape or honeycomb coaly and become liquid; High temperature melting can be carried out in cupola furnace; When melting, utilize fuel that cupola furnace is heated to 1300-1500 ℃; Fuel can adopt fuel commonly used in the metallurgy industries such as coke, heavy oil, and the heating and temperature control of cupola furnace gets final product at 1400 ℃ among the present invention.
Step 3, the sealed stream material mouth through the cupola furnace bottom import centrifugal fiberizer with the liquid that fusing obtains through diversion trench; High-temp liquid drawing-off under said centrifugal fiberizer action of centrifugal force becomes thread rock wool fibers; Rock wool fibers moulding in this step also can be adopted other forming method; Go into rock wool fibers as high-temp liquid being carried out the high-pressure air winding-up; Other technique means that the cellucotton manufacturing process can use present technique field those of ordinary skill to be known does not receive the restriction of rock wool fibers implementation method in the present embodiment.
The rock wool product that utilizes the iron ore mine rock wool fibers to process has the following advantages:
1, good heat insulating ability.
The thermal conductivity of when 25 ℃ of left and right sides (i.e.) rock wool product is usually between 0.03～0.047W/ (moK) under normal temperature condition.
2, excellent flame-retardant performance.
The rock wool that the present invention makes has non-inflammability, safe, relatively is suitable for places such as buildings, pipeline, storage tank, distillation tower, boiler, flue, heat exchanger, blower fan, car and boat, industrial equipments and production plant and uses.
3, good sound insulation property.
Asbestos product has sound insulation preferably and sound absorbing capabilities; Its sound absorbing mechanism is that this asbestos product inside is cellular structure, when sound wave passes through, rubs because the effect of flow resistance produces; The part of acoustic energy is absorbed by fiber; Hindered the transmission of sound wave, thereby reached the sound damping purpose, relatively be fit to big noise place and use.
The rock wool of manufacturing of the present invention can have been expanded material chosen scopes such as building and industrial equipment, fire prevention, sound absorption, antidetonation through being processed into multiple products such as rock cotton board, rock wool pipe, rock wool blanket, helps to economize on resources.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification sheets just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (7)
1. utilize iron ore mine to make the method for rock wool, it is characterized in that: utilize iron ore mine as the starting material of making rock wool.
2. the method for utilizing iron ore mine to make rock wool as claimed in claim 1 is characterized in that: may further comprise the steps: with the iron ore mine high temperature melting, process rock wool fibers through being centrifuged into fine machine.
3. the method for utilizing iron ore mine to make rock wool as claimed in claim 2 is characterized in that: before the iron ore mine high temperature melting, earlier with iron ore mine compressed moulding and dry.
4. the method for utilizing iron ore mine to make rock wool as claimed in claim 3 is characterized in that: add sticker before the said iron ore mine compressed moulding.
5. the method for utilizing iron ore mine to make rock wool as claimed in claim 4, it is characterized in that: said sticker is a cement.
6. the method for utilizing iron ore mine to make rock wool as claimed in claim 5, it is characterized in that: said iron ore mine compressed moulding is coal briquette shape or honeycomb coaly.
7. like the described method of utilizing iron ore mine to make rock wool of the arbitrary claims of claim 2-6, it is characterized in that: said high temperature melting is carried out in cupola furnace, and fuel is coke, and Heating temperature is 1300-1500 ℃.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100539107A CN102583996A (en) | 2012-02-24 | 2012-02-24 | Method for manufacturing rock wool by iron ore tailings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100539107A CN102583996A (en) | 2012-02-24 | 2012-02-24 | Method for manufacturing rock wool by iron ore tailings |
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| CN102583996A true CN102583996A (en) | 2012-07-18 |
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| CN2012100539107A Pending CN102583996A (en) | 2012-02-24 | 2012-02-24 | Method for manufacturing rock wool by iron ore tailings |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725878A (en) * | 2014-01-10 | 2014-04-16 | 王洪 | Method for comprehensively utilizing residual tailings after extracting precious metals from acid pickling sludge |
| CN104478208A (en) * | 2014-12-15 | 2015-04-01 | 山东鲁阳股份有限公司 | Preparation method of black rock wool |
| CN105272028A (en) * | 2015-09-24 | 2016-01-27 | 中材科技股份有限公司 | Industrial solid waste and nonmetal mine tailing clamp dog used for mineral wool production, and making method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062829A (en) * | 2007-05-25 | 2007-10-31 | 彭苏宁 | Method for preparing mineral fiber by using slag water quenching |
| CN102010122A (en) * | 2010-12-02 | 2011-04-13 | 长治市华兴环保工程有限公司 | Method for preparing inorganic slag fibers by using iron tailings |
-
2012
- 2012-02-24 CN CN2012100539107A patent/CN102583996A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062829A (en) * | 2007-05-25 | 2007-10-31 | 彭苏宁 | Method for preparing mineral fiber by using slag water quenching |
| CN102010122A (en) * | 2010-12-02 | 2011-04-13 | 长治市华兴环保工程有限公司 | Method for preparing inorganic slag fibers by using iron tailings |
Non-Patent Citations (1)
| Title |
|---|
| 彭苏宁 等: "利用铜尾矿生产高性能矿物纤维及其制品", 《金属矿山》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725878A (en) * | 2014-01-10 | 2014-04-16 | 王洪 | Method for comprehensively utilizing residual tailings after extracting precious metals from acid pickling sludge |
| CN104478208A (en) * | 2014-12-15 | 2015-04-01 | 山东鲁阳股份有限公司 | Preparation method of black rock wool |
| CN104478208B (en) * | 2014-12-15 | 2017-02-22 | 山东鲁阳股份有限公司 | Preparation method of black rock wool |
| CN105272028A (en) * | 2015-09-24 | 2016-01-27 | 中材科技股份有限公司 | Industrial solid waste and nonmetal mine tailing clamp dog used for mineral wool production, and making method thereof |
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Application publication date: 20120718 |