CN108033784A - A kind of recoverying and utilizing method for troilite slag - Google Patents

A kind of recoverying and utilizing method for troilite slag Download PDF

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Publication number
CN108033784A
CN108033784A CN201711291783.3A CN201711291783A CN108033784A CN 108033784 A CN108033784 A CN 108033784A CN 201711291783 A CN201711291783 A CN 201711291783A CN 108033784 A CN108033784 A CN 108033784A
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China
Prior art keywords
slag
troilite
small
recoverying
bauxite
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CN201711291783.3A
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Chinese (zh)
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陶小飞
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Anhui SA Heavy Industry Machinery Co Ltd
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Anhui SA Heavy Industry Machinery Co Ltd
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Priority to CN201711291783.3A priority Critical patent/CN108033784A/en
Publication of CN108033784A publication Critical patent/CN108033784A/en
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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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/101—Refractories from grain sized mixtures
    • C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
    • 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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3826—Silicon carbides
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562—Heating rate
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6565—Cooling rate
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time

Abstract

The present invention relates to mineral products processing to utilize technical field, disclose a kind of recoverying and utilizing method for troilite slag, utilize the troilite slag of recycling, coordinate with quartz sand and bauxite clinker, raw material ratio according to setting is kneaded, pass through convection current, the effect such as diffusion and shearing reaches be combineding with each other for dispensing homogenizing and particulate material and binder etc., between mineralogical composition crystal, due to the effect of surface tension, its can be made close to each other, and fill the hole of material after sintering, improve product consistency, the material being prepared has excellent fire resistance, and there is good dimensional stability, available for fire-fighting and building material field.

Description

A kind of recoverying and utilizing method for troilite slag
Technical field
The invention belongs to mineral products processing to utilize technical field, and in particular to a kind of recycling for troilite slag Method.
Background technology
Pyrite is that a kind of most wide sulfide mineral is distributed in the earth's crust, and main component is curing Asia（FeS2）, true yellow The sulphur containing 46.67% iron and 53.33%, is industrially called troilite in iron ore.Often in cube, pyritohedron Etc. crystalline form or block aggregate, in the ore and rock that see a variety of origin causes of formation；And the pyrite in coal seam is often produced into concretion forms Go out.Color and bright metallic luster because of its pale yellow copper, it is gold to be often mistakenly thought of as, therefore also known as " fool's gold ".Pyrite It is to extract sulphur, manufacture the essential mineral raw material of sulfuric acid；Its special form color and luster, it is troilite choosing to have ornamental value pyrite tailing The waste residue discharged after ore deposit.Pyrite tailing is discarded in ground or gully as waste residue for a long time, seriously pollutes environment.
China since the 60's of eighties of last century, due to extractive equipment backwardness and technique of preparing it is immature,
The 80's~90 that particularly economy develops rapidly, mine resources receive large-scale exhaustive exploitation, in recent years, by Rapid in local economy emerges, and random digging is adopted in the unordered unrest of small ore deposit point, backward technique of preparing and eager for instant success and quick profits, causes substantial amounts of Valuable element is drained with tailing so that and mineral resources waste seriously, and intergrowth mineral produces the comprehensive utilization ratio of resource less than 20%, Mineral resources overall recovery only has 30%.Tailing is also a kind of resource, with the development of Technological Economy and subtracting increasingly for mineral resources Few, tailing recycles to be paid attention to by national more and more barghs.In recent years, international market commodity price is constantly climbed Rising, Mineral Resources in China consumption increases substantially, and develops resource of tailings, to alleviate the dual-pressure of resource and environment, into To put a new problem in face of Resource Dependence type enterprise.
The content of the invention
The purpose of the present invention is for it is existing the problem of, there is provided a kind of recoverying and utilizing method for troilite slag, The material being prepared has excellent fire resistance, and has good dimensional stability, available for fire-fighting and construction material Field.
The present invention is achieved by the following technical solutions：
A kind of recoverying and utilizing method for troilite slag, comprises the following steps：
（1）Taking troilite slag, drying to constant weight at a temperature of 100-110 DEG C, then with ball mill grinding to 80-100 mesh sieves excessively Troilite slag fine powder is obtained, prepares following raw material according to mass percent meter：Troilite slag fine powder accounts for 35-45%, quartz sand Account for 20-25%, carborundum accounts for 5-10%, remaining as bauxite；
（2）Troilite slag fine powder is calcined at 1150-1250 DEG C 2-3 it is small when, prepare slag clinker, bauxite exists When calcining 2.0-2.5 is small at 1300-1400 DEG C, bauxite is prepared, quartz sand and carborundum are mixed, adding concentration is When the salt acid soak 2-3 of 70-80% is small, pull out flushing after at 600-650 DEG C calcine 3-4 it is small when, then with slag clinker, aluminium Bauxite clinker mix, add mass percent be 10-12% water, stir evenly aging 10-15 it is small when；
（3）By step（2）In it is aging after material add mould in, be molded with hydraulic press pressure, be pressurized to 55- for the first time 15-20MPa is depressurized to after 60MPa, second of repressurization to 60-65MPa, is being depressurized to 25-30MPa, is being pressurized to 60- for the third time After 70MPa, pressurize is carried out, the dwell time is 8-10 minutes, obtains compressed mixture；
（4）By step（3）It is 0.8-1.0% that middle compressed mixture is dried to moisture content at 120-130 DEG C, is subsequently placed in high temperature 1300-1450 DEG C is to slowly warm up in stove, kept the temperature under oxidizing atmosphere 2-3 it is small when after fires 40-50 minutes, slowly cool to normal Temperature, obtains the recycling refractory material of troilite slag.
As further improvement of these options, quartz sand and the carborundum particle size is between 20-50 microns.
As further improvement of these options, step（4）The slowly programming rate is 20-25 DEG C/min.
As further improvement of these options, step（4）The Slow cooling speed is 18-20 DEG C/min.
The present invention has the following advantages compared with prior art：In order to solve the existing waste residue to being discharged after pyrite beneficiation The problem of usability is not high, the present invention provides a kind of recoverying and utilizing method for troilite slag, utilizes the sulphur iron of recycling Ore deposit slag, coordinates with quartz sand and bauxite clinker, is kneaded according to the raw material ratio set, passes through convection current, diffusion and shearing Reach be combineding with each other for dispensing homogenizing and particulate material and binder etc. Deng effect, between mineralogical composition crystal, since surface is opened The effect of power, can make its close to each other, and fill the hole of material after sintering, improve product consistency, the material being prepared With excellent fire resistance, and there is good dimensional stability, available for fire-fighting and building material field.
Embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1
A kind of recoverying and utilizing method for troilite slag, comprises the following steps：
（1）Taking troilite slag, drying to constant weight at a temperature of 100 DEG C, then obtains sulphur iron to 80 mesh sieves are crossed with ball mill grinding Ore deposit slag fine powder, prepares following raw material according to mass percent meter：Troilite slag fine powder accounts for 35%, quartz sand and accounts for 20%, carbonization Silicon accounts for 5%, remaining as bauxite；
（2）Troilite slag fine powder is calcined at 1150 DEG C 2 it is small when, prepare slag clinker, bauxite is forged at 1300 DEG C Burn 2.0 it is small when, prepare bauxite, quartz sand and carborundum mixed, add salt acid soak 2 that concentration is 70% it is small when, Pull out flushing after at 600 DEG C calcining 3 it is small when, then mix with slag clinker, bauxite, addition mass percent be 10% water, stir evenly aging 10 it is small when；
（3）By step（2）In it is aging after material add mould in, be molded with hydraulic press pressure, after being pressurized to 55MPa for the first time 15MPa is depressurized to, second of repressurization to 60MPa, is being depressurized to 25MPa, after being pressurized to 60MPa for the third time, carries out pressurize, Dwell time is 8 minutes, obtains compressed mixture；
（4）By step（3）It is 0.8% that middle compressed mixture, which is dried at 120 DEG C to moisture content, is subsequently placed in high temperature furnace slowly Be warming up to 1300 DEG C, under oxidizing atmosphere keep the temperature 2 it is small when after fire 40 minutes, slowly cool to room temperature, obtain troilite slag Recycling refractory material.
As further improvement of these options, quartz sand and the carborundum particle size is between 20-50 microns.
As further improvement of these options, step（4）The slowly programming rate is 20 DEG C/min.
As further improvement of these options, step（4）The Slow cooling speed is 18 DEG C/min.
Embodiment 2
A kind of recoverying and utilizing method for troilite slag, comprises the following steps：
（1）Taking troilite slag, drying to constant weight at a temperature of 105 DEG C, then obtains sulphur iron to 90 mesh sieves are crossed with ball mill grinding Ore deposit slag fine powder, prepares following raw material according to mass percent meter：Troilite slag fine powder accounts for 40%, quartz sand and accounts for 22%, carbonization Silicon accounts for 8%, remaining as bauxite；
（2）Troilite slag fine powder is calcined at 1200 DEG C 2.5 it is small when, prepare slag clinker, bauxite is at 1350 DEG C Calcine 2.2 it is small when, prepare bauxite, quartz sand and carborundum mixed, add the salt acid soak 2.5 that concentration is 75% Hour, pull out flushing after at 620 DEG C calcining 3.5 it is small when, then mix with slag clinker, bauxite, addition quality hundred Point than for 11% water, stir evenly aging 12 it is small when；
（3）By step（2）In it is aging after material add mould in, be molded with hydraulic press pressure, after being pressurized to 58MPa for the first time 18MPa is depressurized to, second of repressurization to 63MPa, is being depressurized to 28MPa, after being pressurized to 65MPa for the third time, carries out pressurize, Dwell time is 9 minutes, obtains compressed mixture；
（4）By step（3）It is 0.9% that middle compressed mixture, which is dried at 125 DEG C to moisture content, is subsequently placed in high temperature furnace slowly Be warming up to 1380 DEG C, under oxidizing atmosphere keep the temperature 2.5 it is small when after fire 45 minutes, slowly cool to room temperature, obtain troilite ore deposit The recycling refractory material of slag.
As further improvement of these options, quartz sand and the carborundum particle size is between 20-50 microns.
As further improvement of these options, step（4）The slowly programming rate is 23 DEG C/min.
As further improvement of these options, step（4）The Slow cooling speed is 19 DEG C/min.
Embodiment 3
A kind of recoverying and utilizing method for troilite slag, comprises the following steps：
（1）Taking troilite slag, drying to constant weight at a temperature of 110 DEG C, then obtains sulphur to 100 mesh sieves are crossed with ball mill grinding Iron ore slag fine powder, prepares following raw material according to mass percent meter：Troilite slag fine powder accounts for 45%, quartz sand and accounts for 25%, carbon SiClx accounts for 10%, remaining as bauxite；
（2）Troilite slag fine powder is calcined at 1250 DEG C 3 it is small when, prepare slag clinker, bauxite is forged at 1400 DEG C Burn 2.5 it is small when, prepare bauxite, quartz sand and carborundum mixed, add salt acid soak 3 that concentration is 80% it is small when, Pull out flushing after at 650 DEG C calcining 4 it is small when, then mix with slag clinker, bauxite, addition mass percent be 12% water, stir evenly aging 15 it is small when；
（3）By step（2）In it is aging after material add mould in, be molded with hydraulic press pressure, after being pressurized to 60MPa for the first time 20MPa is depressurized to, second of repressurization to 65MPa, is being depressurized to 30MPa, after being pressurized to 70MPa for the third time, carries out pressurize, Dwell time is 10 minutes, obtains compressed mixture；
（4）By step（3）It is 1.0% that middle compressed mixture, which is dried at 130 DEG C to moisture content, is subsequently placed in high temperature furnace slowly Be warming up to 1450 DEG C, under oxidizing atmosphere keep the temperature 3 it is small when after fire 50 minutes, slowly cool to room temperature, obtain troilite slag Recycling refractory material.
As further improvement of these options, quartz sand and the carborundum particle size is between 20-50 microns.
As further improvement of these options, step（4）The slowly programming rate is 25 DEG C/min.
As further improvement of these options, step（4）The Slow cooling speed is 20 DEG C/min.

Claims (4)

1. a kind of recoverying and utilizing method for troilite slag, it is characterised in that comprise the following steps：
（1）Taking troilite slag, drying to constant weight at a temperature of 100-110 DEG C, then with ball mill grinding to 80-100 mesh sieves excessively Troilite slag fine powder is obtained, prepares following raw material according to mass percent meter：Troilite slag fine powder accounts for 35-45%, quartz sand Account for 20-25%, carborundum accounts for 5-10%, remaining as bauxite；
（2）Troilite slag fine powder is calcined at 1150-1250 DEG C 2-3 it is small when, prepare slag clinker, bauxite exists When calcining 2.0-2.5 is small at 1300-1400 DEG C, bauxite is prepared, quartz sand and carborundum are mixed, adding concentration is When the salt acid soak 2-3 of 70-80% is small, pull out flushing after at 600-650 DEG C calcine 3-4 it is small when, then with slag clinker, aluminium Bauxite clinker mix, add mass percent be 10-12% water, stir evenly aging 10-15 it is small when；
（3）By step（2）In it is aging after material add mould in, be molded with hydraulic press pressure, be pressurized to 55- for the first time 15-20MPa is depressurized to after 60MPa, second of repressurization to 60-65MPa, is being depressurized to 25-30MPa, is being pressurized to 60- for the third time After 70MPa, pressurize is carried out, the dwell time is 8-10 minutes, obtains compressed mixture；
（4）By step（3）It is 0.8-1.0% that middle compressed mixture is dried to moisture content at 120-130 DEG C, is subsequently placed in high temperature 1300-1450 DEG C is to slowly warm up in stove, kept the temperature under oxidizing atmosphere 2-3 it is small when after fires 40-50 minutes, slowly cool to normal Temperature, obtains the recycling refractory material of troilite slag.
A kind of 2. recoverying and utilizing method for troilite slag as claimed in claim 1, it is characterised in that the quartz sand and Carborundum particle size is between 20-50 microns.
A kind of 3. recoverying and utilizing method for troilite slag as claimed in claim 1, it is characterised in that step（4）It is described Slow programming rate is 20-25 DEG C/min.
A kind of 4. recoverying and utilizing method for troilite slag as claimed in claim 1, it is characterised in that step（4）It is described Slow cooling speed is 18-20 DEG C/min.
CN201711291783.3A 2017-12-08 2017-12-08 A kind of recoverying and utilizing method for troilite slag Pending CN108033784A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103159494A (en) * 2013-04-17 2013-06-19 成都理工大学 Method for preparing clay-based refractory material by utilizing pyrite tailing as raw material
CN103159492A (en) * 2013-04-17 2013-06-19 成都理工大学 Method for preparing self-siliceous refractory material by utilizing pyrite tailing as raw material
CN103159493A (en) * 2013-04-17 2013-06-19 成都理工大学 Method for preparing high-alumina refractory material by utilizing pyrite tailing as main raw material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103159494A (en) * 2013-04-17 2013-06-19 成都理工大学 Method for preparing clay-based refractory material by utilizing pyrite tailing as raw material
CN103159492A (en) * 2013-04-17 2013-06-19 成都理工大学 Method for preparing self-siliceous refractory material by utilizing pyrite tailing as raw material
CN103159493A (en) * 2013-04-17 2013-06-19 成都理工大学 Method for preparing high-alumina refractory material by utilizing pyrite tailing as main raw material

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Application publication date: 20180515