CN106082736A - Barium slag ceramic aggregate and manufacture method thereof - Google Patents
Barium slag ceramic aggregate and manufacture method thereof Download PDFInfo
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- CN106082736A CN106082736A CN201610417272.0A CN201610417272A CN106082736A CN 106082736 A CN106082736 A CN 106082736A CN 201610417272 A CN201610417272 A CN 201610417272A CN 106082736 A CN106082736 A CN 106082736A
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- clay
- barium slag
- ceramic aggregate
- barium
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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
- C04B18/00—Use 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
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/023—Fired or melted materials
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
" barium slag ceramic aggregate and manufacture method thereof " relates to hazardous waste and administers, administer the long-term safety of product, aggregate produces, according to barium slag: clay 30 65:35 70 weight ratio dispensing, barium slag and clay (unselected clay or by unselected clay or the ceramic clay of Hazardous Wastes Management) are thoroughly mixed and become pug, diameter 8 18 millimeters is become with extruding granulator granulation, the ceramic aggregate biscuit of length 10 30 millimeters, rotary kiln drying, burn till as ceramic aggregate, by ceramic aggregate with natural cooling or air cooling or water cooling, obtain barium slag ceramic aggregate product, barium content ＜ 8mg/L in barium slag ceramic aggregate leachate, bulk density 200kg 1800kg/m3, as aggregate, roadbed material, oil well crack backing material etc..
Description
Technical field
The present invention relates to a kind of method that barium slag manufactures ceramic aggregate, belong to hazardous waste resource technology field.
Background technology
Barium slag is to produce, with barite, the solid waste given off during brium carbonate, main component be Barium monoxide, two
Silicon oxide, alchlor, iron sesquioxide, sulfur trioxide etc., barium ions is poisonous, belongs to hazardous waste, at present, China's barium slag muck
Accumulated amount alreadys more than 1,000 ten thousand tons.
Once used barium slag to produce cement, brick, building block, and replaced building sand, however, it was found that barium ions bleeding, there is ratio
Bigger environmental risk.
China's hazardous waste generation of current year including barium slag measures about 60,000,000 tons, is also increasing year by year, China's population
Concentrating on east with industry, substantial amounts of rubbish, solid waste, the landfill of hazardous waste not only need long-term management, maintenance,
Also can occupy the soil that east China is limited, a large amount of landfills are also the major hidden dangers of Homeland Security from now on.
Should find a way out for solid waste, hazardous waste, incineration of refuse flyash, residue, outlet should be to form certain
Commodity and be permanent secure, this commodity are preferably provided with huge market demand, it is possible to accommodate by solid waste, danger
The quantity of new, the qualified commodity that refuse, flying ash, residue are formed.
Summary of the invention
To achieve these goals, the present invention is by the following technical solutions:
A kind of barium slag ceramic aggregate, it is characterised in that barium slag ceramic aggregate barium slag and clay (unselected clay or the most dangerous
The unselected clay of waste pollution or ceramic clay) manufacture, barium ＜ 8mg/L in the leachate of barium slag ceramic aggregate, barium slag pottery bone
The bulk density 200kg 1800kg/m of material3, as aggregate, roadbed material, oil well crack backing material.
Barium slag ceramic aggregate manufacture method, it is characterised in that comprise the following steps:
A. get the raw materials ready: barium slag is adjusted to moisture content 30 50%(wet basis), and ball milling becomes the barium of 80 120 mesh in ball mill
Slag mud, dry clay (unselected clay or by unselected clay or the ceramic clay of Hazardous Wastes Management), and use dry method powder
It is broken into the clay powder for fineness 40 120 mesh；Or above-mentioned barium slag and clay are separately dried, are crushed into 40 120 mesh powder
Last standby；
B. dispensing stirring mixing: barium slag: clay 30 65:35 70(is all converted into siccative weight ratio), barium slag mud is with dry
Clay powder be thoroughly mixed and become mixing pug；Or both are fully mixed when being all to be dried powder by above-mentioned barium slag and clay
The conjunction stirring that adds water becomes moisture content 15 30%(wet basis) mixing pug；Ratio is adjusted according to mud and silicate content in clay
Example, makes there are enough one-tenth porcelain materials in mixing pug；Reduce the ratio that clay adds, to reach final material decrement and joint as far as possible
The effect of energy；
C. pelletize is extruded: above-mentioned mixing pug is become diameter 10 20 millimeters, length 15 30 milli with extruding granulator granulation
The barium slag ceramic aggregate biscuit of rice；
D. rotary kiln drying, burn till: barium slag ceramic aggregate biscuit wet after molding is directly entered rotary kiln, rolls through rotary kiln
To rotary kiln outlet be gradually completing dry, burn till overall process, firing temperature 1,100 1300 DEG C, become barium slag ceramic aggregate；
E. cooling: will export out the barium slag ceramic aggregate of heat from rotary kiln through natural cooling or air cooling or water cooling,
To barium slag ceramic aggregate product.
Barium slag ceramic aggregate manufacture method of the present invention, it is characterised in that use in step a by Hazardous Wastes Management
Clay.
Barium slag ceramic aggregate manufacture method of the present invention, it is characterised in that use ceramic clay in step a, use in step d
Firing temperature 1,200 1300 DEG C.
Barium slag ceramic aggregate manufacture method of the present invention, it is characterised in that according to barium slag in step a, b: clay 30 65:
35 70(are all converted into siccative weight ratio) dispensing, be jointly dried, be crushed into 80 120 mesh powder after the stirring that adds water become and contain
Water rate 15 30%(wet basis) mixing pug.
Barium slag ceramic aggregate manufacture method of the present invention, it is characterised in that add in dispensing 1-3% reducing agent (coal and/
Or coke and/or flyash and/or slag and/or other there is the Organic substance of reproducibility).
Use and be because 1 by the unselected clay of Hazardous Wastes Management, barium slag ceramic aggregate manufacture needs a large amount of silicon
Hydrochlorate mineral, are contained before a large amount of silicate mineral 2, China hazardous waste in decades by the unselected clay of Hazardous Wastes Management
Arbitrarily stacking, pollute a large amount of soil, the harmful substance contents in these soil is even up to the level of hazardous waste, these soil
Earth also must administer 3, due to the policy of protecting farmland, take now unselected clay relatively difficult.Preferential employing barium slag waterproof pulverization,
Clay dry pulverization process, is for reducing toxic dust as far as possible, alleviates cleaner burden.
The present invention is sufficiently mixed with barium slag and clay for primary raw material, and high temperature burns till, to destroy original various material
Molecular structure, forms new mineral crystal and glass phase, forms new silicate mineral and is the most fully wrapped by glass, finally producing
Thing is various mineral, glass, the solid ceramic of pore composition, and its associative key is atomic bond and ionic bond, has the highest bond energy,
Highly stable, be equivalent to the natural mineral that nature exists more than one hundred million years, wrapping of a large amount of glass phases more improves safety.Flue gas
Realize utilizing and innoxious through collecting and processing.
The ceramic aggregate biscuit that barium slag and clay are formed produces a large amount of glass phase in high temperature, in static calcination equipment very
It is susceptible to bonding phenomenon, and rolls in rotary kiln, advance on one side, there is new mineral grains, glass phase, pore
High-temperature ceramics aggregate biscuit is owing to rolling, moving, and is not easy and furnace wall bonding, it is not easy to adhered to one another.
Aggregate product and the usual pottery requiring shape and size precision, outward appearance, color, surface smoothness, surface flatness etc.
Device, stoneware, porcelain are compared, compared with the various porcelain such as household china, architectural ceramics, sanitary china, chemical industry porcelain, electroceramics, artistic porcelain, it is allowed to
Produce most glass phases, the widest shape, change in size license amount, can the most sufficiently react, highly porcelain, reach very
High safe class.
Above-mentioned the ceramic aggregate either ceramic grain of densification, ceramic block, the ceramic grain of porous, the ceramic block of porous, in fact
Heart part is all fine and close silicate mineral crystal and fine and close vitreous body composition, and its intensity, hardness, consistency are far above the biggest
Part natural rock, on from extraneous physics, chemistry, corrode, the resistance that affects also exceeds well over made concrete,
The almost all artifact such as brick and tile, metal, plastic, pottery is year up to ten thousand prehuman remnants, ware, especially porcelain
By be after modern humans withers away finally, the remnants the most remote.And artificial aggregate is with hazardous waste, solid waste, cheap clay
For raw material, with the building rubble of nearly 10,000,000,000 tons of whole nation year demand, cobble for replacing object, there is enough absorption of market, its
Quite or close, along with going deep into of environmental conservation, cost also can be progressively close, with danger with rubble, cobble for cost and ordinary ceramsite
Danger refuse, solid waste, incineration of refuse flyash etc. manufacture the developing direction that ceramic aggregate is the most inevitable.
The ceramic aggregate that barium slag is formed with ceramic clay has higher intensity, hardness and stability, this is because ceramic
Clay is higher than the silicon oxide of unselected clay, alumina content, and impurity is few, firing range width, and firing temperature is high, pore is few,
Consistency is high, is high intensity aggregate.
The density of barium slag ceramic aggregate is by how many pores in ceramic aggregate determines, how many pores is to be made pottery by under high temperature
Porcelain biscuit produces high temp glass identical time produce that gas flow is how many, vapour pressure, the at that time viscosity of glass phase, production technology, life
Produce what the factors such as purpose degree of priority determined.Hazardous waste is administered and is wished to realize: 1, permanent secure 2, formation commodity, it is to avoid landfill
Occupation of land 3, minimum treatment cost, the barium slag ingredient of the up to ten million each factories in ton various places output is different, and the high-temperature gasification material in clay is also
Ever-changing, the ceramic aggregate that the raw material production of applicable production aglite is lighter is also referred to as haydite, replaces ordinary ceramsite, high
The raw material that temperature gasification substance is few then produces the few heavier ceramic aggregate of pore also referred to as pottery grain, replaces rubble, cobble, and
Intensity can be higher than rubble, cobble, so the bulk density scope of barium slag ceramic aggregate is bigger, is 200kg 1800kg/
m3。
Heavy metal element that harmful substance in hazardous waste is mainly harmful, heavy metal compound, heavy metal ion, have
Inorganic elements such as arsenic, selenium, the fluorine of evil, cryanide ion (CN), the pesticide being harmful to, the organic compound of agrochemical ad hoc structure, have
The medicine of evil, infection article etc..Organic compound is formed specific molecular structure by elements such as carbon, hydrogen, oxygen, nitrogen, sulfur, phosphorus, chlorine.
Hazardous waste artificial aggregate produce be add about 50% or above clay, make material be in about 1200 DEG C, silicate, high temperature
In fused mass environment, destroying metallic compound, inorganic compound, original molecular structure of organic compound, changing various has
Evil physical property, form new harmless silicate mineral and wrapped mutually by about 50% glass, formed high intensity, high rigidity,
Leachable is up to state standards, the ceramic aggregate of permanent secure in natural environment.
Building Trade in China exploits rubble every year, about 10,000,000,000 tons of cobble is equivalent to billions of cubic meter, uses building sand number
1000000000 tons, produce cement more than 20 hundred million tons, exploit rubble, cobble, building sand welding, it should gradually reduce.
China's clay, flyash, gangue, shale etc. produce more than 2000 ten thousand stere haydites, general haydite heap every year
Long-pending density 200kg 1200kg/m3, general rubble, cobble bulk density 1200kg 1600kg/m3, rubble, cobble, haydite exist
Building industry is referred to as aggregate, or claims to gather materials, the barium slag ceramic aggregate bulk density 200kg 1800kg/ manufactured with barium slag and clay
m3, barium slag ceramic aggregate can have various density, intensity, purposes；Different densities, the barium slag ceramic aggregate of granularity can replace
Haydite, rubble, cobble, building sand.
Specific implementation method
Embodiment 1
Barium slag is adjusted to moisture content 38%, and wet grinding becomes 80 mesh mud, unselected clay, coal dust dry grinding to 40 mesh, barium slag: common
Clay 65:35(is all converted into siccative weight ratio), it is thoroughly mixed and becomes mixing pug, by mixing pug with extruding pelletize
Machine pelletize becomes diameter 12 millimeters, the ceramic aggregate biscuit of length 22 millimeters, is directly entered by the wet ceramic aggregate biscuit of molding
Enter rotary kiln, through being dried, burning till, firing temperature 1180 DEG C, become ceramic aggregate, will export out the pottery of heat from rotary kiln
Aggregate water-spraying control, obtains barium slag ceramic aggregate product, barium content 7mg/L in barium slag ceramic aggregate leachate, bulk density
500kg/m3, cylindrical compress strength 4.54Mpa, as aggregate.
Embodiment 2
Being adjusted by barium slag and become moisture content 40%, wet grinding becomes 100 mesh mud, is dry grinded extremely by the unselected clay of barium slag severe contamination
60 mesh, barium slag: the clay of pollution: flyash 52:45:3(is all converted into siccative weight ratio), it is thoroughly mixed and becomes mixing
Pug, becomes diameter 15 millimeters by mixing pug with extruding granulator granulation, and the ceramic aggregate biscuit of length 25 millimeters, by molding
Wet ceramic aggregate biscuit be directly entered rotary kiln, through being dried, burning till, firing temperature 1200 DEG C, become ceramic aggregate, will
Export out the ceramic aggregate quenching of heat from rotary kiln, obtain barium slag ceramic aggregate product, barium slag ceramic aggregate leachate
Middle barium content 6mg/L, bulk density 1100kg/m3, cylindrical compress strength 5.2Mpa, as roadbed material.
Embodiment 3
Barium slag is adjusted to moisture content 50%, and wet grinding becomes 120 mesh mud, ceramic clay, coke dry grinding to 80 mesh, barium slag: pottery
Porcelain clay: coke blacking 40:56:4(is all converted into siccative weight ratio), it is thoroughly mixed and becomes mixing pug, pug will be mixed
Diameter 10 millimeters is become with extruding granulator granulation, the ceramic aggregate element that length is 20 millimeters after twin shaft vacuum deairing machine pugging
Base, is directly entered rotary kiln by the wet ceramic aggregate biscuit of molding, through being dried, burning till, firing temperature 1270 DEG C, becomes pottery
Porcelain body material, by exporting out the ceramic aggregate natural cooling of heat from rotary kiln, obtains barium slag ceramic aggregate product, barium slag pottery bone
Material solid section water absorption rate 0.2%, its solid section is ceramic material, barium content 1mg/L, bulk density in leachate
1700kg/m3, cylindrical compress strength 12Mpa, as oil well crack backing material.
Embodiment 4
By barium slag, clay, cinder each dry pulverization process to 100 mesh, barium slag: unselected clay: cinder powder 30:68:2, it is sufficiently mixed
Become compound, compound add water to 20%(wet basis), by compound after twin shaft vacuum deairing machine pugging with extruding
Granulator granulation becomes diameter 13 millimeters, the ceramic aggregate biscuit of length 20 millimeters, by straight for the wet ceramic aggregate biscuit of molding
Tap into into rotary kiln, through being dried, burning till, firing temperature 1190 DEG C, become light ceramics aggregate, will export out from rotary kiln
The porcelain ceramic aggregate natural cooling of heat, obtains barium slag ceramic aggregate product, barium slag ceramic aggregate solid section water absorption rate
0.3%, its solid section is ceramic material, barium content 4mg/L, bulk density 300kg/m in leachate3, cylindrical compress strength 5Mpa,
Pavement seepage material as sponge urban construction.
Claims (6)
1. a barium slag ceramic aggregate, it is characterised in that barium slag ceramic aggregate barium slag and clay (unselected clay or endangered
The unselected clay of danger waste pollution or ceramic clay) manufacture, barium ＜ 8mg/L in the leachate of barium slag ceramic aggregate, barium slag pottery
The bulk density 200kg 1800kg/m of aggregate3, as aggregate, roadbed material, oil well crack backing material.
2. barium slag ceramic aggregate manufacture method, it is characterised in that comprise the following steps:
A. get the raw materials ready: barium slag is adjusted to moisture content 30 50%(wet basis), and ball milling becomes the barium of 80 120 mesh in ball mill
Slag mud, dry clay (unselected clay or by unselected clay or the ceramic clay of Hazardous Wastes Management), and use dry method powder
It is broken into the clay powder for fineness 40 120 mesh；Or above-mentioned barium slag and clay are separately dried, are crushed into 40 120 mesh powder
Last standby；
B. dispensing stirring mixing: barium slag: clay 30 65:35 70(is all converted into siccative weight ratio), barium slag mud is with dry
Clay powder be thoroughly mixed and become mixing pug；Or both are fully mixed when being all to be dried powder by above-mentioned barium slag and clay
The conjunction stirring that adds water becomes moisture content 15 30%(wet basis) mixing pug；
C. pelletize is extruded: above-mentioned mixing pug is become diameter 10 20 millimeters, length 15 30 milli with extruding granulator granulation
The barium slag ceramic aggregate biscuit of rice；
D. rotary kiln drying, burn till: barium slag ceramic aggregate biscuit wet after molding is directly entered rotary kiln, rolls through rotary kiln
To rotary kiln outlet be gradually completing dry, burn till overall process, firing temperature 1,100 1300 DEG C, become barium slag ceramic aggregate；
E. cooling: will export out the barium slag ceramic aggregate of heat from rotary kiln through natural cooling or air cooling or water cooling,
To barium slag ceramic aggregate product.
Barium slag ceramic aggregate manufacture method the most according to claim 2, it is characterised in that use the most dangerous in step a
The clay of waste pollution.
Barium slag ceramic aggregate manufacture method the most according to claim 2, it is characterised in that use ceramic clay in step a,
Step d uses firing temperature 1,200 1300 DEG C.
Barium slag ceramic aggregate manufacture method the most according to claim 2, it is characterised in that according to barium slag in step a, b: viscous
Soil 30 65:35 70(be all converted into siccative weight ratio) dispensing, be jointly dried, be crushed into 80 120 mesh powder after add water
Stirring become moisture content 15 30%(wet basis) mixing pug.
Barium slag ceramic aggregate manufacture method the most according to claim 2, it is characterised in that add going back of 1-3% in dispensing
Former dose (coal and/or coke and/or flyash and/or slag and/or other there is the Organic substance of reproducibility).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610417272.0A CN106082736A (en) | 2016-06-13 | 2016-06-13 | Barium slag ceramic aggregate and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610417272.0A CN106082736A (en) | 2016-06-13 | 2016-06-13 | Barium slag ceramic aggregate and manufacture method thereof |
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| CN106082736A true CN106082736A (en) | 2016-11-09 |
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| CN201610417272.0A Pending CN106082736A (en) | 2016-06-13 | 2016-06-13 | Barium slag ceramic aggregate and manufacture method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590333A (en) * | 2019-10-09 | 2019-12-20 | 凯里学院 | Method for improving structure and performance of barium slag ceramic tile |
| CN111393118A (en) * | 2020-03-23 | 2020-07-10 | 普定县百安新型环保建筑材料有限责任公司 | Novel barium slag and fly ash hollow building block and preparation method thereof |
| CN115073089A (en) * | 2022-06-14 | 2022-09-20 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Process and equipment for preparing non-autoclaved aerated concrete material by utilizing barium slag |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590333A (en) * | 2019-10-09 | 2019-12-20 | 凯里学院 | Method for improving structure and performance of barium slag ceramic tile |
| CN111393118A (en) * | 2020-03-23 | 2020-07-10 | 普定县百安新型环保建筑材料有限责任公司 | Novel barium slag and fly ash hollow building block and preparation method thereof |
| CN115073089A (en) * | 2022-06-14 | 2022-09-20 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Process and equipment for preparing non-autoclaved aerated concrete material by utilizing barium slag |
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Application publication date: 20161109 |