CN110002774A - A kind of silicon-manganese alloy melting waste slag recoverying and utilizing method - Google Patents
A kind of silicon-manganese alloy melting waste slag recoverying and utilizing method Download PDFInfo
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- CN110002774A CN110002774A CN201910361797.0A CN201910361797A CN110002774A CN 110002774 A CN110002774 A CN 110002774A CN 201910361797 A CN201910361797 A CN 201910361797A CN 110002774 A CN110002774 A CN 110002774A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of silicon-manganese alloy melting waste slag recoverying and utilizing methods, including raw material preparation, cement preparation and the calcining micro- ash of silicon, raw material preparation includes the preparation of ferrosilicon micro mist, clay powder preparation and lime stone preparation, cement preparation first selects the micro- grey raw material of silicon, it is being weighed by formula and is being uniformly mixed, then it is calcined in Muffle furnace, the present invention relates to a kind of silicon-manganese alloy melting waste slag recoverying and utilizing methods, utilize a large amount of amorphous crystal form waste residues generated in ferrosilicon production process, it is utilized as cement producting material, on the basis of this early-stage study has certain progress, using new thinking and technique, further deeply optimize every process conditions, intensity that meet national standards is made in this waste residue rich in Si oxide, eco-cement of the grade up to 42.5 labels, to reach industrialization production, again by ferrosilicon slag As the additive of cement, the multiple performance of cement is improved, is also beneficial to the development of modern society's environmental protection and energy saving.
Description
Technical field
The invention belongs to industrial residues to make cement industry, and specially a kind of silicon-manganese alloy melting waste slag recycles
Method.
Background technique
The raw materials for production of most of cement are dry iron powder, clay and lime stone currently on the market, and cement is fabricated to
This height, ecological pollution is serious, and the cement internal stress made is poor, and comprehensive performance is low, needs to design a kind of high silicon silicon to this
Manganese alloy melting waste slag recoverying and utilizing method.
Summary of the invention:
The object of the invention is that providing a kind of silicon-manganese alloy melting waste slag recycling to solve the above-mentioned problems
Using method, solve that conventional cement cost of manufacture is high, and ecological pollution is serious, and the cement internal stress difference made is asked
Topic.
To solve the above-mentioned problems, the present invention provides a kind of technical solutions: a kind of silicon-manganese alloy melting waste slag time
Receive the method for utilizing, including the preparation of raw material preparation, cement and the calcining micro- ash of silicon.
Preferably, the raw material preparation includes the preparation of ferrosilicon micro mist, clay powder preparation and lime stone preparation；
The preparation of ferrosilicon micro mist: the ferrosilicon waste residue formed after being smelted using silicon-manganese alloy is as the substantially former of ferrosilicon micro mist
Material, handles to obtain silicon powder by smashing and grinding, is the silicon powder of 200 mesh or more using screening machine screening granular size, most
The silicon powder that these granular sizes are more than 200 mesh is sent into drying machine afterwards to be dried, drying time 1h-2h, drying temperature
It is 200-300 degrees Celsius, specific drying time and drying temperature are determined according to the silicon powder quantity of actual drying；
Clay powder preparation: it after taking wet clay, is sent into high-temperature drier and carries out high temperature drying, drying time should not mistake
It is long, it is advisable within 1 hour, then the clay after drying is crushed and polished, finally sieves the clay particle crushed after polishing
Point, the clay of 60 mesh or more is chosen, is placed stand-by；
Lime stone preparation: lime stone obtains 0.75 cubic centimetre of fragment into preliminary be crushed excessively first, then is ground by grinder
Mill finally screens the limestone particle of 120 mesh to 150 mesh, places stand-by.
Preferably, the cement preparation first micro- grey raw material of selection silicon, including the micro- grey raw material preparation of silicon, process conditions selection
With the micro- ash of divided silicon；
The micro- grey raw material preparation of silicon: ferrosilicon micro mist, clay powder and the lime stone that will be prepared are being weighed by formula and are mixing
It is even, it is then calcined in Muffle furnace, tailings of high silicon iron is handled according to the acid-hatching of young eggs, by silicon therein and iron and other metal oxygens
Object separation, prepare Fe0 and Si0 this for non crystalline structure micro mist as the raw material of industry, this not only ensure that the quality of the micro- ash of silicon
It with yield, also separates ferro element with mode of oxidizing, can utilize again；
Process conditions selection: the time of reaction temperature 100C, reaction are 90min, and the median of the micro- ash of silicon is
6.19ixrn, the volume fraction of hydrochloric acid are 60%；
The micro- ash of divided silicon；Using the acid-hatching of young eggs come the micro- ash of divided silicon, then Fe0 product, the production of Fe0 can be obtained by hydro-thermal reaction
Rate can achieve 78.8%, and the Fe0 mass fraction in product can reach 85%, micro- grey to prepare Si0 come divided silicon with hydrochloric acid
Yield reached 98.2%, the mass fraction that amorphous Si0 mass fraction may be up to 96.66%, Fe0 in acid leaching residue is minimum
It is 0.08%.
Preferably, the micro- ash of calcining silicon includes that low temperature presintering stage, medium temperature heating calcination stage and high temperature heating are forged
The burning stage；
The low temperature presintering stage: the volatilization of reply and the adsorbed gas and free moisture of raw material, earthenware mainly occur in this stage
The micro- grey raw material of silicon in crucible decompose and the exclusion etc. of part volatile impurity, this experiment are set as room temperature~900C；
Medium temperature heating calcination stage: this stage starts the melting for solid matter occur and recrystallization, in particle, deformation
Crystal grain restored, be reorganized as new crystal grain, at the same between different material start tentatively react and mutually flow, lime
Stone and clay start to decompose, and start to be detached from conjunction with water and final all disappearance, this experiment are set as 900C~1280C；
High temperature heats up calcination stage: diffusion and the flowing adequately progress of the raw material of the micro- ash of silicon and close to complete in this stage
At forming a large amount of clinker product, original gentle phase in gap disappears in raw material, and the density of cement is obviously increased, ultimately formed
Clinker is set as 1280C~1400C or so.
The beneficial effects of the present invention are: the present invention relates to a kind of silicon-manganese alloy melting waste slag recoverying and utilizing method, benefit
With a large amount of amorphous crystal form waste residues generated in ferrosilicon production process, it is utilized as cement producting material, in this early-stage study
On the basis of having certain progress, using new thinking and technique, further deeply optimize every process conditions, is rich in silicon for this
The waste residue of oxide is made intensity that meet national standards, grade up to 42.5 labels eco-cement, to reach industry metaplasia
It produces, then using ferrosilicon slag as the additive of cement, improves the multiple performance of cement, be also beneficial to modern society's environmental protection and energy saving
Development.
Specific embodiment:
A kind of silicon-manganese alloy melting waste slag recoverying and utilizing method, including raw material preparation, cement prepare and calcining silicon is micro-
Ash.
Wherein, the raw material preparation includes the preparation of ferrosilicon micro mist, clay powder preparation and lime stone preparation；
The preparation of ferrosilicon micro mist: the ferrosilicon waste residue formed after being smelted using silicon-manganese alloy is as the substantially former of ferrosilicon micro mist
Material, handles to obtain silicon powder by smashing and grinding, is the silicon powder of 200 mesh or more using screening machine screening granular size, most
The silicon powder that these granular sizes are more than 200 mesh is sent into drying machine afterwards to be dried, drying time 1h-2h, drying temperature
It is 200-300 degrees Celsius, specific drying time and drying temperature are determined according to the silicon powder quantity of actual drying；
Clay powder preparation: it after taking wet clay, is sent into high-temperature drier and carries out high temperature drying, drying time should not mistake
It is long, it is advisable within 1 hour, then the clay after drying is crushed and polished, finally sieves the clay particle crushed after polishing
Point, the clay of 60 mesh or more is chosen, is placed stand-by；
Lime stone preparation: lime stone obtains 0.75 cubic centimetre of fragment into preliminary be crushed excessively first, then is ground by grinder
Mill finally screens the limestone particle of 120 mesh to 150 mesh, places stand-by.
Wherein, the cement prepares and first selects the micro- grey raw material of silicon, including the micro- grey raw material preparation of silicon, process conditions select and divide
From the micro- ash of silicon；
The micro- grey raw material preparation of silicon: ferrosilicon micro mist, clay powder and the lime stone that will be prepared are being weighed by formula and are mixing
It is even, it is then calcined in Muffle furnace, tailings of high silicon iron is handled according to the acid-hatching of young eggs, by silicon therein and iron and other metal oxygens
Object separation, prepare Fe0 and Si0 this for non crystalline structure micro mist as the raw material of industry, this not only ensure that the quality of the micro- ash of silicon
It with yield, also separates ferro element with mode of oxidizing, can utilize again；
Process conditions selection: the time of reaction temperature 100C, reaction are 90min, and the median of the micro- ash of silicon is
6.19ixrn, the volume fraction of hydrochloric acid are 60%；
The micro- ash of divided silicon；Using the acid-hatching of young eggs come the micro- ash of divided silicon, then Fe0 product, the production of Fe0 can be obtained by hydro-thermal reaction
Rate can achieve 78.8%, and the Fe0 mass fraction in product can reach 85%, micro- grey to prepare Si0 come divided silicon with hydrochloric acid
Yield reached 98.2%, the mass fraction that amorphous Si0 mass fraction may be up to 96.66%, Fe0 in acid leaching residue is minimum
It is 0.08%.
Wherein, the micro- ash of the calcining silicon includes low temperature presintering stage, medium temperature heating calcination stage and high temperature heating calcining rank
Section；
The low temperature presintering stage: the volatilization of reply and the adsorbed gas and free moisture of raw material, earthenware mainly occur in this stage
The micro- grey raw material of silicon in crucible decompose and the exclusion etc. of part volatile impurity, this experiment are set as room temperature~900C；
Medium temperature heating calcination stage: this stage starts the melting for solid matter occur and recrystallization, in particle, deformation
Crystal grain restored, be reorganized as new crystal grain, at the same between different material start tentatively react and mutually flow, lime
Stone and clay start to decompose, and start to be detached from conjunction with water and final all disappearance, this experiment are set as 900C~1280C；
High temperature heats up calcination stage: diffusion and the flowing adequately progress of the raw material of the micro- ash of silicon and close to complete in this stage
At forming a large amount of clinker product, original gentle phase in gap disappears in raw material, and the density of cement is obviously increased, ultimately formed
Clinker is set as 1280C~1400C or so.
Points for attention: in order to reduce calcination temperature, and the generating portion fusant in calcination process, often add small amounts iron
Raw material will also control raw material the content of wherein alkali and magnesia, i.e., the content of magnesia should be less than 5% in clinker,
Total alkali content (Na.0+K.0) should be less than 1.2% for general cement, then should be less than 0.6% to low alkali cement, and not with the micro- ash of silicon
Required iron oxide can be only provided, and greatly reduce the content of Mg0, reduce the internal stress of cement.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, the technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of silicon-manganese alloy melting waste slag recoverying and utilizing method, which is characterized in that including raw material preparation, cement preparation and
Calcine the micro- ash of silicon.
2. a kind of silicon-manganese alloy melting waste slag recoverying and utilizing method according to claim 1, it is characterised in that: described
Raw material preparation includes the preparation of ferrosilicon micro mist, clay powder preparation and lime stone preparation；
2.1, prepared by ferrosilicon micro mist: the ferrosilicon waste residue formed after being smelted using silicon-manganese alloy is as the substantially former of ferrosilicon micro mist
Material, handles to obtain silicon powder by smashing and grinding, is the silicon powder of 200 mesh or more using screening machine screening granular size, most
The silicon powder that these granular sizes are more than 200 mesh is sent into drying machine afterwards to be dried, drying time 1h-2h, drying temperature
It is 200-300 degrees Celsius, specific drying time and drying temperature are determined according to the silicon powder quantity of actual drying；
2.2, prepared by clay powder: after taking wet clay, being sent into high-temperature drier and carries out high temperature drying, drying time should not mistake
It is long, it is advisable within 1 hour, then the clay after drying is crushed and polished, finally sieves the clay particle crushed after polishing
Point, the clay of 60 mesh or more is chosen, is placed stand-by；
2.3, prepared by lime stone: lime stone obtains 0.75 cubic centimetre of fragment into preliminary be crushed excessively first, then is ground by grinder
Mill finally screens the limestone particle of 120 mesh to 150 mesh, places stand-by.
3. a kind of silicon-manganese alloy melting waste slag recoverying and utilizing method according to claim 1, it is characterised in that: described
The cement preparation first micro- grey raw material of selection silicon, including the micro- grey raw material preparation of silicon, process conditions selection and the micro- ash of divided silicon；
3.1, the micro- grey raw material preparation of silicon: ferrosilicon micro mist, clay powder and the lime stone that will be prepared are being weighed by formula and are mixing
It is even, it is then calcined in Muffle furnace, tailings of high silicon iron is handled according to the acid-hatching of young eggs, by silicon therein and iron and other metal oxygens
Object separation, prepare Fe0 and Si0 this for non crystalline structure micro mist as the raw material of industry, this not only ensure that the quality of the micro- ash of silicon
It with yield, also separates ferro element with mode of oxidizing, can utilize again；
3.2, process conditions select: reaction temperature 100C, and the time of reaction is 90min, and the median of the micro- ash of silicon is
6.19ixrn, the volume fraction of hydrochloric acid are 60%；
3.3, the micro- ash of divided silicon；Using the acid-hatching of young eggs come the micro- ash of divided silicon, then Fe0 product, the production of Fe0 can be obtained by hydro-thermal reaction
Rate can achieve 78.8%, and the Fe0 mass fraction in product can reach 85%, micro- grey to prepare Si0 come divided silicon with hydrochloric acid
Yield reached 98.2%, the mass fraction that amorphous Si0 mass fraction may be up to 96.66%, Fe0 in acid leaching residue is minimum
It is 0.08%.
4. a kind of silicon-manganese alloy melting waste slag recoverying and utilizing method according to claim 1, it is characterised in that: described
Calcining the micro- ash of silicon includes low temperature presintering stage, medium temperature heating calcination stage and high temperature heating calcination stage；
4.1, the volatilization of reply and the adsorbed gas and free moisture of raw material, earthenware mainly the low temperature presintering stage: occur in this stage
The micro- grey raw material of silicon in crucible decompose and the exclusion etc. of part volatile impurity, this experiment are set as room temperature~900C；
4.2, medium temperature heating calcination stage: this stage starts the melting for solid matter occur and recrystallization, in particle, deformation
Crystal grain restored, be reorganized as new crystal grain, at the same between different material start tentatively react and mutually flow, lime
Stone and clay start to decompose, and start to be detached from conjunction with water and final all disappearance, this experiment are set as 900C~1280C；
4.3, high temperature heats up calcination stage: diffusion and the flowing adequately progress of the raw material of the micro- ash of silicon and close to complete in this stage
At forming a large amount of clinker product, original gentle phase in gap disappears in raw material, and the density of cement is obviously increased, ultimately formed
Clinker is set as 1280C~1400C or so.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462836A (en) * | 2009-01-15 | 2009-06-24 | 清华大学 | Congealing stone gelled material with ferro-silico-manganese alloy slag as principal raw material |
| CN104152720A (en) * | 2014-06-23 | 2014-11-19 | 石家庄新华能源环保科技股份有限公司 | Method and device for reducing magnesium metal and byproduct cement clinker through electric heating |
| CN105948544A (en) * | 2016-05-27 | 2016-09-21 | 四川省宁南县白鹤滩水泥有限责任公司 | Retarded portland cement and preparation method thereof |
| CN106119542A (en) * | 2016-07-18 | 2016-11-16 | 周三虎 | Silicon-manganese alloy smelting process |
-
2019
- 2019-04-30 CN CN201910361797.0A patent/CN110002774A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462836A (en) * | 2009-01-15 | 2009-06-24 | 清华大学 | Congealing stone gelled material with ferro-silico-manganese alloy slag as principal raw material |
| CN104152720A (en) * | 2014-06-23 | 2014-11-19 | 石家庄新华能源环保科技股份有限公司 | Method and device for reducing magnesium metal and byproduct cement clinker through electric heating |
| CN105948544A (en) * | 2016-05-27 | 2016-09-21 | 四川省宁南县白鹤滩水泥有限责任公司 | Retarded portland cement and preparation method thereof |
| CN106119542A (en) * | 2016-07-18 | 2016-11-16 | 周三虎 | Silicon-manganese alloy smelting process |
Non-Patent Citations (1)
| Title |
|---|
| 吴云: "用微硅粉取代硅石配料生产低碱熟料的体会", 《水泥》 * |
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Address after: 753000 Lanshan Park, Hongguozi Industrial Park, Huinong District, Shizuishan City, Ningxia Hui Autonomous Region Applicant after: Ningxia Lanxin New Material Co.,Ltd. Address before: 753000 Lanshan Park, Hongguozi Industrial Park, Huinong District, Shizuishan City, Ningxia Hui Autonomous Region Applicant before: Ningxia Jinlanshan Metallurgical Co.,Ltd. |
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Application publication date: 20190712 |
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