CN105503150A - Brick burning kiln cooperated harmless disposal method for waste aluminum electrolysis bath liners - Google Patents
Brick burning kiln cooperated harmless disposal method for waste aluminum electrolysis bath liners Download PDFInfo
- Publication number
- CN105503150A CN105503150A CN201510897850.0A CN201510897850A CN105503150A CN 105503150 A CN105503150 A CN 105503150A CN 201510897850 A CN201510897850 A CN 201510897850A CN 105503150 A CN105503150 A CN 105503150A
- Authority
- CN
- China
- Prior art keywords
- electrolysis
- brick
- waste tank
- tank lining
- aluminum waste
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
-
- 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
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/606—Drying
-
- 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
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a brick burning kiln cooperated harmless disposal method for waste aluminum electrolysis bath liners. The method comprises the steps: separately crushing the waste aluminum electrolysis bath liners, calcification materials, such as CaSO4 capable of reacting with soluble fluorides, and bituminous coal, and then, mixing the crushed powder into clay; adding water into the mixture, carrying out thorough mixing, and then, carrying out extruding by a vacuum extruder, a vacuum pump and/or a spiral reamer, so as to form unburned bricks; drying and dehydrating the unburned bricks under the condition of natural ventilating; feeding the dried unburned bricks into a burning kiln, carrying out burning at the temperature of 900-1,050 DEG C, and maintaining the high temperature for 1-3 hours; subjecting exhaust gas to purifying treatment, and carrying out high-altitude emission after the treated exhaust gas reaches the standards. The treatment effect is good, the operation is simple and convenient, the reaction velocity is high, the practicability is very high, and the resource converting of wastes is directly realized; produced bricks can be applied to non-sensitive places such as factories, roads constructing and horticulture. Meanwhile, cyanides are thoroughly decomposed in a high-temperature brick burning process.
Description
Technical field
The present invention relates to a kind of method of disposal of aluminium electrolytic tank, particularly relate to a kind of brick-baking kiln cooperative disposal method innoxious for electrolysis of aluminum waste tank lining, relate to the waste tank lining waste material that useless negative electrode carbon, useless graphite liner etc. are all.
Background technology
The direct landfill of electrolysis of aluminum waste tank lining or stacking all can cause air, soil and groundwater to pollute in various degree, and can not realize resource utilization.In the process of electrolysis of aluminum waste tank lining, disposal, what research was more both at home and abroad is burning method process.But burning method except there is complex process, equipment requirements is high, processing cost is high, have except the problems such as secondary environmental pollution, containing SiO in its remaining residue
2be not effectively utilized Deng composition, can only simply simply utilize as the material of referring and synthesizing of material of construction.
On the other hand, for brick-baking kiln, can be there is series of physical and chemical transformation in brick and tile base, in the process, discharge moisture in heating roasting process, organism is burnt, transformation of crystal, solid state reaction, produces congruent melting compound about more than 800 DEG C greatly, time and temperature constantly increase, and the raw material of melting produces liquid phase and and adhesion between the clay particle do not melted.Visible, brick-baking kiln, in the production link of baking bricks, provides the heat-treat condition such as burning problem, approximate burning facility be similar to the thermal treatment of electrolysis of aluminum waste tank lining, and the SiO in waste tank lining
2also can as the natural matter of baking bricks Deng raw material.So, if the thermal treatment of electrolysis of aluminum waste tank lining combined with brick-baking kiln production technique, and meet production, solve pollution problem again, directly achieve the resource utilization of refuse simultaneously, avoid burden and the process of the single resource that conventional heat treating method needs.But current this cooperative disposal method, both at home and abroad all without bibliographical information.
Summary of the invention
The object of this invention is to provide a kind of brick-baking kiln cooperative disposal method innoxious for electrolysis of aluminum waste tank lining.
The object of the invention is to be achieved through the following technical solutions:
The brick-baking kiln cooperative disposal method innoxious for electrolysis of aluminum waste tank lining of the present invention, comprises step:
For the brick-baking kiln cooperative disposal method that electrolysis of aluminum waste tank lining is innoxious, it is characterized in that, comprise step:
A, electrolysis of aluminum waste tank lining, the calcification material that can react with soluble fluoride and bituminous coal are pulverized respectively after be blended in clay;
B, said mixture added water and fully mixes, being then squeezed into adobe by vacuum-extruder, vacuum pump and/or spiral reamer;
C, under natural ventilation condition, brick bat drying dewater;
D, dried adobe sent in roasting cellar for storing things, with the temperature calcination of 900-1050 DEG C, high temperature hold time is 1-3 hour;
E, tail gas after purifying treatment is up to standard, high altitude discharge.
As seen from the above technical solution provided by the invention, the brick-baking kiln cooperative disposal method innoxious for electrolysis of aluminum waste tank lining that the embodiment of the present invention provides, treatment effect is good, easy and simple to handle, speed of response is fast, practicality is very strong, directly achieves changing waste into resources, the non-sensitive places such as the fragment of brick of generation can be used for factory, repairs the roads, gardening.Meanwhile, bake bricks in pyroprocess, prussiate obtains and decomposes thoroughly.
Accompanying drawing explanation
The schematic flow sheet of the brick-baking kiln cooperative disposal method innoxious for electrolysis of aluminum waste tank lining that Fig. 1 provides for the embodiment of the present invention.
Embodiment
To be described in further detail the embodiment of the present invention below.
The brick-baking kiln cooperative disposal method innoxious for electrolysis of aluminum waste tank lining of the present invention, preferably embodiment is as shown in Figure 1 for it:
Comprise step:
A, electrolysis of aluminum waste tank lining, the calcification material that can react with soluble fluoride and bituminous coal are pulverized respectively after be blended in clay;
B, said mixture added water and fully mixes, being then squeezed into adobe by vacuum-extruder, vacuum pump and/or spiral reamer;
C, under natural ventilation condition, brick bat drying dewater;
D, dried adobe sent in roasting cellar for storing things, with the temperature calcination of 900-1050 DEG C, high temperature hold time is 1-3 hour;
E, tail gas after purifying treatment is up to standard, high altitude discharge.
The described calcification material that can react with soluble fluoride comprise following any one or more: Wingdale, calcium oxide, blast furnace slag, CaSO
4.
The mass ratio that described electrolysis of aluminum waste tank lining addition accounts for clay is 2%-15%, the mass ratio that the described bituminous coal amount of allocating into accounts for clay is 1%-8%, described calcification material addition be the 1.1-1.3 of fluorochemical reaction theory value in described electrolysis of aluminum waste tank lining doubly, described electrolysis of aluminum waste tank lining and bituminous coal levigate after size be no more than 0.05mm.
Described roasting cellar for storing things is annular kiln or tunnel furnace.
The brick-baking kiln cooperative disposal method innoxious for electrolysis of aluminum waste tank lining of the present invention, adopts inside/outside combustion method to carry out the innoxious cooperative disposal of waste tank lining by brick-baking kiln, constitutes the circulating system of a direct resource utilization recycling of Hazardous wastes.Using waste tank lining as the roasting of one of starting material and melting, final cooling recrystallization becomes hard fragment of brick.Treatment effect is good, easy and simple to handle, and speed of response is fast, and practicality is very strong, directly achieves changing waste into resources: the non-sensitive places such as the fragment of brick of generation can be used for factory, repairs the roads, gardening.Meanwhile, bake bricks in pyroprocess, prussiate obtains and decomposes thoroughly.
The present invention effectively make use of the SiO in waste tank lining, bituminous coal in waste tank lining disposal process
2, Al
2o
3deng composition, and bituminous coal combustion heat is large, can fix the S in bituminous coal, obviously reduce pollution level with clay effect.
The calcification material that can react with soluble fluoride comprises CaSO
4, Wingdale, calcium oxide, blast furnace slag etc.
The present invention's roasting apparatus used is comparatively common annular kiln or tunnel furnace, high yield more stable, energy-conservation compared with other kilns, and is applicable to calcined clay brick.
Specific embodiment:
Embodiment 1:
Get waste tank lining weight 50kg, the bituminous coal amount of allocating into 15kg, the effective addition of calcium sulfate is 25kg, after mixing, is crushed to size and is no more than 0.05mm, then mix 700kg clay, add a small amount of water, compression moulding after stirring.Treat that its natural ventilation is dried again, send into annular kiln.Under top temperature about 1000 DEG C, be incubated 1.8 hours, after cooling down, can finished product be taken out.
According to Hazardous wastes judging standard, Leaching standard (GB5085.3-2007), hazardness detection is carried out to finished product fragment of brick, in leach liquor, inorganic fluoride (does not comprise Calcium Fluoride (Fluorspan), in F-) be 66mg/L, prussiate is 0.058mg/L, effectively reduce the leaching content of harmful poisonous substance, achieve innoxious (being no longer Hazardous wastes).
Embodiment 2:
Get waste tank lining weight 120kg, the bituminous coal amount of allocating into 20kg, the effective addition of calcium sulfate is 55kg, after mixing, is crushed to size and is no more than 0.05mm, then mix 1050kg clay, add a small amount of water, compression moulding after stirring.Treat that its natural ventilation is dried again, send into annular kiln.Under top temperature about 1100 DEG C, be incubated 2.2 hours, after cooling down, can finished product be taken out.
According to Hazardous wastes judging standard, Leaching standard (GB5085.3-2007), hazardness detection is carried out to finished product fragment of brick, in leach liquor, inorganic fluoride (does not comprise Calcium Fluoride (Fluorspan), in F-) be 43mg/L, prussiate is 0.037g/L, effectively reduce the leaching content of harmful poisonous substance, achieve innoxious (being no longer Hazardous wastes).
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (4)
1., for the brick-baking kiln cooperative disposal method that electrolysis of aluminum waste tank lining is innoxious, it is characterized in that, comprise step:
A, electrolysis of aluminum waste tank lining, the calcification material that can react with soluble fluoride and bituminous coal are pulverized respectively after be blended in clay;
B, said mixture added water and fully mixes, being then squeezed into adobe by vacuum-extruder, vacuum pump and/or spiral reamer;
C, under natural ventilation condition, brick bat drying dewater;
D, dried adobe sent in roasting cellar for storing things, with the temperature calcination of 900-1050 DEG C, high temperature hold time is 1-3 hour;
E, tail gas high altitude discharge after purifying treatment is up to standard.
2. the brick-baking kiln cooperative disposal method innoxious for electrolysis of aluminum waste tank lining according to claim 1, is characterized in that, the described calcification material that can react with soluble fluoride comprise following any one or more: Wingdale, calcium oxide, blast furnace slag, CaSO
4.
3. the brick-baking kiln cooperative disposal method innoxious for electrolysis of aluminum waste tank lining according to claim 2, it is characterized in that, the mass ratio that described electrolysis of aluminum waste tank lining addition accounts for clay is 2%-15%, and the mass ratio that the described bituminous coal amount of allocating into accounts for clay is 1%-8%, described CaSO
4addition be the 1.1-1.3 of fluorochemical reaction theory value in described electrolysis of aluminum waste tank lining doubly, described electrolysis of aluminum waste tank lining and bituminous coal levigate after size be no more than 0.05mm.
4. the brick-baking kiln cooperative disposal method innoxious for electrolysis of aluminum waste tank lining according to claim 1,2 or 3, is characterized in that, described roasting cellar for storing things is annular kiln or tunnel furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510897850.0A CN105503150A (en) | 2015-12-08 | 2015-12-08 | Brick burning kiln cooperated harmless disposal method for waste aluminum electrolysis bath liners |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510897850.0A CN105503150A (en) | 2015-12-08 | 2015-12-08 | Brick burning kiln cooperated harmless disposal method for waste aluminum electrolysis bath liners |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105503150A true CN105503150A (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510897850.0A Pending CN105503150A (en) | 2015-12-08 | 2015-12-08 | Brick burning kiln cooperated harmless disposal method for waste aluminum electrolysis bath liners |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013922A (en) * | 2017-05-26 | 2017-08-04 | 北京石油化工学院 | The harmlessness disposing technique method and apparatus of electrolytic aluminium solid waste |
| CN111380358A (en) * | 2020-03-17 | 2020-07-07 | 北京矿冶科技集团有限公司 | Method for treating aluminum electrolysis waste cell lining and melting furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306798A (en) * | 2008-06-24 | 2008-11-19 | 中国铝业股份有限公司 | Process for treating waste liner of aluminium cell catalyzed by coal |
| CN102059736A (en) * | 2010-12-03 | 2011-05-18 | 伊川龙海科技实业有限公司 | Method for producing insulating bricks by utilizing aluminum-electrolyzed waste refractory materials |
| CN103755312A (en) * | 2014-01-25 | 2014-04-30 | 云南蓝天铝业环保科技有限公司 | Coal gangue brick prepared from aluminum-electrolytic cell waste thermal-insulation materials and preparation method thereof |
-
2015
- 2015-12-08 CN CN201510897850.0A patent/CN105503150A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306798A (en) * | 2008-06-24 | 2008-11-19 | 中国铝业股份有限公司 | Process for treating waste liner of aluminium cell catalyzed by coal |
| CN102059736A (en) * | 2010-12-03 | 2011-05-18 | 伊川龙海科技实业有限公司 | Method for producing insulating bricks by utilizing aluminum-electrolyzed waste refractory materials |
| CN103755312A (en) * | 2014-01-25 | 2014-04-30 | 云南蓝天铝业环保科技有限公司 | Coal gangue brick prepared from aluminum-electrolytic cell waste thermal-insulation materials and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013922A (en) * | 2017-05-26 | 2017-08-04 | 北京石油化工学院 | The harmlessness disposing technique method and apparatus of electrolytic aluminium solid waste |
| CN111380358A (en) * | 2020-03-17 | 2020-07-07 | 北京矿冶科技集团有限公司 | Method for treating aluminum electrolysis waste cell lining and melting furnace |
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Application publication date: 20160420 |
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