CN106938895A - A kind of method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule - Google Patents

A kind of method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule Download PDF

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Publication number
CN106938895A
CN106938895A CN201710077238.8A CN201710077238A CN106938895A CN 106938895 A CN106938895 A CN 106938895A CN 201710077238 A CN201710077238 A CN 201710077238A CN 106938895 A CN106938895 A CN 106938895A
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China
Prior art keywords
waste residue
nickel ore
lateritic nickel
ore acid
soaked
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CN201710077238.8A
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CN106938895B (en
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李梅彤
张柯
袁文蛟
范文浩
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Tianjin University of Technology
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Tianjin University of Technology
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02Agglomerated materials, e.g. artificial aggregates
    • C04B18/027Lightweight materials
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

A kind of method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule, primary raw material of this method by the use of key component silicon, aluminium, iron of lateritic nickel ore acid-soaked waste residue etc. as haydite utilizes Ca0, MgO, Fe in waste residue2O3Deng composition as fluxing agent, add a small amount of carbon and lime stone additive and be allocated as producing light ceramic for building for granulation bonding agent as component of getting angry, waste residue reclaimed water.Meet national recycling economy policy, with notable economy and environmental benefit.The beneficial effects of the invention are as follows:Main component in lateritic nickel ore acid-soaked waste residue is taken full advantage of, is turned waste into wealth, cost of disposal is low, energy-saving effect significantly, meets national recycling economy policy, with significant economy and environmental benefit.

Description

A kind of method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule
Technical field
The present invention relates to a kind of method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule, belong to resource and environment filed.
Background technology
Lateritic nickel ore main component is Ni, SiO2、MgO、Fe2O3、Al2O3, CaO etc., wherein Si contents are generally 3-35%, During wet method smelting nickel, sulfuric acid (or hydrochloric acid) acidleach is commonly used, the main component of acid-soaked waste residue is SiO2、CaO、Al2O3、Fe2O3Deng into Point, moisture is about 30~50%, and wherein SiO is calculated according to butt2Content up to 30~70%, Fe, Mg, Al and Ca etc. into Divide about 20~40%;This part waste residue is all handled as stacking substantially, takes large area soil, expends huge and pollution ring Border.The enhancing of requirement raising and people's environmental consciousness recently as country to clean manufacturing, both at home and abroad on waste processing Progressively implement with every regulation of regeneration, treatment of wastes produced is required at also more and more higher, Ye Nie enterprises waste residue resource Put imperative.The utilization of silicon resource in waste residue, can both reduce waste residue disposal costs, and new benefit can be produced again, symbol Close theory and the clean manufacturing requirement of recycling economy.
Haydite is a kind of lightweight aggregate for building, can replace traditional rubble, cobble etc. that light aggregate concrete is made with it Product, such as building-block, light weight board.Haydite is the high-quality for producing energy-saving wall material or cast-in-site light energy-saving wall Raw material, with lightweight, insulation, sound insulation, environmental protection the features such as.Recent country has put into effect prohibits the use of clay in multiple city time limits A series of walls such as solid brick change policy, therefore, and the application amount of concrete hollow block is increased year by year, is used as concrete hollow block One of main raw material(s), the ten thousand stere of China's building porcelain granule yield about 1000, the demand of ceramic product will be also continuously increased, city Field has good prospects.But because the raw material of the current haydite production of China is mainly shale and clay, by shale especially clay resource Limitation, the development of haydite industry receives severely restricts.For industry long term growth and the consideration of reduction production cost, profit The research of haydite is produced with solid waste and practical work is increasingly taken seriously, and is the direction that national policy is encouraged.
When firing light-weight building haydite, the chemical composition of raw material is the principal element for causing haydite swelling.According to open source information, It can be divided into three funtion parts by each component effect:One is into Tao Chengfen, there is SiO2、Al2O3And Fe2O3, 3/ is accounted in the feed 4;The second is playing the flux oxide of fluxing action, mainly there is Na2O、K2O, FeO, MgO, CaO etc.;The third is thing of getting angry, in thing Gas, such as H are produced during material high temperature2O、O2、CO2、CO、H2Deng.Without expansion aiding agent material chemical component more than in following scope (%):SiO2:48~68, Al2O3:12~18, Fe2O3:5~10, K2O+Na2O+CaO:2.5~25.0.The chemical composition of raw material If control is within the above range, most pellets can burn swollen.Scholar Riley is suitable viscous when studying the leca swollen property of burning The material chemical component scope of degree is SiO2:53%~79%, Al2O3:10%~25%, Fe2O3、K2O、Na2O, CaO, MgO etc. Flux sum is 13~26%.
Various lateritic nickel ore acid-soaked waste residue disposal ratios are very low at present, but its main component and ratio suitable for producing are for building Haydite;Technique productions building ceramsite reasonable in design, there is wide prospect, has to wet method smelting nickel industry and ecological environment Major and immediate significance.
The content of the invention
The purpose of the present invention is that there is provided a kind of laterite nickel for problem present in lateritic nickel ore acid-soaked waste residue disposal actuality The method that ore deposit acid-soaked waste residue produces building porcelain granule, this method is made using key component silicon, aluminium, iron of lateritic nickel ore acid-soaked waste residue etc. For the main component of haydite, Ca0, MgO, Fe in waste residue are utilized2O3Deng composition as fluxing agent, a small amount of carbon and lime stone are added It is allocated as granulating bonding agent as component of getting angry, waste residue reclaimed water, produces light ceramic for building, meet national recycling economy policy And there is significant economy and environmental benefit.
Technical scheme:
A kind of method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule, step is as follows:
1) lateritic nickel ore acid-soaked waste residue and additive are being added blender, are being uniformly mixed;
2) the above-mentioned mixture stirred is transported to Granulation Equipments, granulated using nodulizer or pressure, solid Grain particle diameter is 1-20mm;
3) solid particle enters incinerator, and it is molten in 1000-1300 DEG C of temperature lower calcination for incinerator that heat source furnace provides heat energy It is swollen 20-60 minutes, obtain the haydite after swell;The tail gas of calcining is used to dry waste residue, and the waste residue of drying, which is used to produce, to be granulated;Profit After being handled with the tail gas after heat through desulphurization denitration, qualified discharge;
4) the haydite air cooling after swell is obtained into finished product to less than 70 DEG C, product quality meets building ceramsite and referred to Mark;The hot blast that cooling is produced is used for heat source furnace as combustion air, reclaims heat.
The step 1) in lateritic nickel ore acid-soaked waste residue refer to lateritic nickel ore use Acid leaching after insoluble matter;It is described to add Plus the one or two kinds of arbitrary proportion mixture that agent is carbon dust or agstone, its addition is lateritic nickel ore acid-soaked waste residue 1-15wt%, its grain diameter is 30-500um.
The step 3) in heat source furnace to provide the arbitrary equipment of thermal source using coal-fired, fuel oil or combustion gas.
The beneficial effects of the invention are as follows:
1) present invention is using lateritic nickel ore waste residue production building porcelain granule, takes full advantage of main component in waste residue, change give up into Treasured, cost of disposal is low, meets national recycling economy policy;
2) present invention devises energy-saving process, and energy-saving effect is notable;
3) resource product market capacity of the present invention is big, low cost, is the preferred orientations of lateritic nickel ore waste residue disposal, has Significant economic and social benefit.
Brief description of the drawings
Fig. 1 is present invention process flow chart.
Embodiment
Further illustrate, but be not construed as limiting the invention by the following examples.
Embodiment 1:
A kind of method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule, step is as follows:
1) (aqueous 35%) and additive carbon dust 80kg enters blender to lateritic nickel ore acid-soaked waste residue 1000kg, and stirring mixing is equal It is even;
2) mixture stirred, is transported to Granulation Equipments, is granulated using nodulizer, and solid grain size is 4-8mm;
3) solid particle enters incinerator, and heat source furnace is heated using coal, makes incinerator in 1150 DEG C of temperature lower calcination swells 25 minutes, obtain the haydite after swell;The tail gas of calcining is used to dry waste residue, and the waste residue of drying, which is used to produce, to be granulated;Utilize heat After tail gas after amount is handled through desulphurization denitration, 95 DEG C of exhaust temperature, qualified discharge;
4) the haydite air cooling after swell turns into finished product to 60 DEG C, obtains finished product haydite 680kg, after tested obtained pottery Grain reaches that performance is as follows:Bulk density (kg/m3) 430, cylindrical compress strength (Mpa) 7.5, the product quality of water absorption rate 7.3%, which meets, builds Build and use haydite index;The hot blast that cooling is produced is used for heat source furnace as combustion air, reclaims heat.
Fig. 1 is present invention process flow chart.
Embodiment 2:
A kind of method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule, step is as follows:
1) (aqueous 35%) and additive agstone 100kg adds blender to lateritic nickel ore acid-soaked waste residue 1000kg, stirs Mix well mixed;
2) mixture stirred, is transported to Granulation Equipments, is granulated using nodulizer, and solid grain size is 2-6mm;
3) solid particle enters incinerator, and heat source furnace is heated using coal, makes incinerator in 1200 DEG C of temperature lower calcination swells 28 minutes, obtain the haydite after swell;The tail gas of calcining is used to dry waste residue, and the waste residue of drying, which is used to produce, to be granulated;Utilize heat After tail gas after amount is handled through desulphurization denitration, 95 DEG C of exhaust temperature, qualified discharge;
4) the haydite air cooling after swell turns into finished product to 50 DEG C, obtains finished product haydite 750kg, after tested obtained pottery Grain reaches that performance is as follows:Bulk density (kg/m3) 330, cylindrical compress strength (Mpa) 7.1, the product quality of water absorption rate 9.2%, which meets, builds Build and use haydite index;The hot blast that cooling is produced is used for heat source furnace as combustion air, reclaims heat;
Embodiment 3:
A kind of method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule, step is as follows:
1) (each 25Kg of aqueous 35%) and additive carbon dust and agstone is amounted to lateritic nickel ore acid-soaked waste residue 1000kg 50kg enters blender, is uniformly mixed;
2) mixture stirred, is transported to Granulation Equipments, is granulated using nodulizer, and solid grain size is 2-5mm;
3) solid particle enters incinerator, and heat source furnace is heated using coal, makes incinerator in 1150 DEG C of temperature lower calcination swells 30 minutes, obtain the haydite after swell;The tail gas of calcining is used to dry waste residue, and the waste residue of drying, which is used to produce, to be granulated;Utilize heat After tail gas after amount is handled through desulphurization denitration, 95 DEG C of exhaust temperature, qualified discharge;
4) the haydite air cooling after swell turns into finished product to 50 DEG C, obtains finished product haydite 660kg, after tested obtained pottery Grain reaches that performance is as follows:Bulk density (kg/m3) 480, cylindrical compress strength (Mpa) 8.5, the product quality of water absorption rate 6.5%, which meets, builds Build and use haydite index;The hot blast that cooling is produced is used for heat source furnace as combustion air, reclaims heat;
Above-described embodiment only technical scheme and feature to illustrate the invention, its object is to allow person skilled in the art Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.

Claims (3)

1. a kind of method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule, it is characterised in that step is as follows:
1) lateritic nickel ore acid-soaked waste residue and additive are being added blender, are being uniformly mixed;
2) the above-mentioned mixture stirred is transported to Granulation Equipments, granulated using nodulizer or pressure, solid particle grain Footpath is 1-20mm;
3) solid particle enters incinerator, and heat source furnace provides heat energy for incinerator in 1000-1300 DEG C of temperature lower calcination swell 20- 60 minutes, obtain the haydite after swell;The tail gas of calcining is used to dry waste residue, and the waste residue of drying, which is used to produce, to be granulated;Utilize heat After tail gas after amount is handled through desulphurization denitration, qualified discharge;
4) the haydite air cooling after swell is obtained into finished product to less than 70 DEG C, product quality meets building ceramsite index;It is cold But the hot blast produced is used for heat source furnace as combustion air, reclaims heat.
2. the method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule according to claim 1, it is characterised in that:The step 1) the lateritic nickel ore acid-soaked waste residue in refers to that lateritic nickel ore uses the insoluble matter after Acid leaching;The additive is carbon dust and lime One or two kinds of arbitrary proportion mixture in stone part, its addition is the 1-15wt% of lateritic nickel ore acid-soaked waste residue, its Grain particle diameter is 30-500um.
3. the method that lateritic nickel ore acid-soaked waste residue produces building porcelain granule according to claim 1, it is characterised in that:The step 3) heat source furnace provides the arbitrary equipment of thermal source for utilization fire coal, fuel oil or combustion gas in.
CN201710077238.8A 2017-02-14 2017-02-14 A kind of method of lateritic nickel ore acid-soaked waste residue production building porcelain granule Active CN106938895B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109827178A (en) * 2018-12-28 2019-05-31 重庆盎瑞悦科技有限公司 Using the method for the self- propagating accumulation of heat incinerator removal dry salt organic matter of polyphenylene sulfide by-product
CN110282996A (en) * 2019-07-30 2019-09-27 天津理工大学 A kind of method of red mud and sludge cooperative disposal production haydite

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CN105174914A (en) * 2015-08-13 2015-12-23 上海中冶环境工程科技有限公司 Method for preparing ceramsite with metallurgical waste slag as raw material
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CN103922698A (en) * 2014-02-27 2014-07-16 东莞市屹城环境技术有限公司 Ceramsite prepared by using smelting wastes, and preparation method thereof
CN105174914A (en) * 2015-08-13 2015-12-23 上海中冶环境工程科技有限公司 Method for preparing ceramsite with metallurgical waste slag as raw material
CN105712643A (en) * 2016-01-27 2016-06-29 天津城建大学 Method for preparing aggregates with high apparent density through industrial waste residues

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109827178A (en) * 2018-12-28 2019-05-31 重庆盎瑞悦科技有限公司 Using the method for the self- propagating accumulation of heat incinerator removal dry salt organic matter of polyphenylene sulfide by-product
CN110282996A (en) * 2019-07-30 2019-09-27 天津理工大学 A kind of method of red mud and sludge cooperative disposal production haydite

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