CN106082732A - Hydrargyrum slag ceramic aggregate and manufacture method thereof - Google Patents
Hydrargyrum slag ceramic aggregate and manufacture method thereof Download PDFInfo
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- CN106082732A CN106082732A CN201610411693.2A CN201610411693A CN106082732A CN 106082732 A CN106082732 A CN 106082732A CN 201610411693 A CN201610411693 A CN 201610411693A CN 106082732 A CN106082732 A CN 106082732A
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
-
- 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
-
- 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
- C04B33/1325—Hazardous waste other than combustion residues
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Civil Engineering (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
" hydrargyrum slag ceramic aggregate and manufacture method thereof " relates to solid waste treatment, long-term safety, aggregate production; according to hydrargyrum slag: clay 25 65:35 75 weight ratio dispensing; by hydrargyrum slag and clay or it is sufficiently mixed by the clay of Hazardous Wastes Management or ceramic clay and reducing agent; diameter 10 20 millimeters, the ceramic aggregate biscuit of length 10 30 millimeters is become with extruding granulator granulation；Rotary kiln drying, burn till as ceramic aggregate, by ceramic aggregate with natural cooling or air cooling or water cooling, obtain hydrargyrum slag ceramic aggregate product, hydrargyrum ＜ 0.01mg/L in hydrargyrum slag ceramic aggregate leachate, arsenic ＜ 0.02mg/L, chromium ＜ 1.3mg/L, cadmium ＜ 0.04mg/L, nickel ＜ 0.2mg/L, lead ＜ 0.2mg/L；For aggregate, roadbed material, oil well crack backing material, pavement seepage material.
Description
Technical field
The present invention relates to a kind of hydrargyrum slag ceramic aggregate and manufacture method thereof, belong to hazardous waste resource technology field.
Background technology
Mercury pollution has become global subject under discussion.Hydrargyrum is toxic heavy metal, and it has persistency, long-distance migration and biology
Enriching, can enter human body by empty gas and water and food.Mercury pollution is very big to human health damage, for anemia of pregnant woman and baby children
Youngster is the most serious.
China is hydrargyrum manufacturing country, use state and the discharge state that the whole world is maximum.Within 2007, national hydrargyrum yield is 798 tons, accounts for generation
The 53.1% of boundary's hydrargyrum yield, occupies the whole world the first.China's hydrargyrum increase of production is rapid, and the data of association of China Non-Ferrous Metals Industry show,
Within 2012, national hydrargyrum yield reaches 1347 tons." the mercury emissions quantitative and qualitative estimation that United Nations Environment Programme (U N EP) issues
Tool kit " in all 11 big class 59 group emission sources the most all exist in China.Existing estimated data shows, China every year to
The mercury quantity of airborne release, between 500-700 ton, accounts for the 30% of global atmosphere mercury emission.
The mercurous solid waste discharged in the production processes such as Gong Zhashi factory, mine.As mercury ore, smeltery discharge mercurous
Ore slag；The mercurous brine sludge of chemical producing system discharge, mercury-containing sludge, calomel, mercury catalyst, activated carbon, solution hydrargyrum grain；Military project is raw
The useless gasetron ignited in material mercury fulminate, electrical equipment industry on product, useless finsen lamp；Mercury vacuum pump in mechanical industry
Mercury oxide, cullet mercurial thermometer in measurement instrument industry, barometer, refuse battery etc. be referred to as hydrargyrum slag.
These hydrargyrum slags are the most mercurous more than 10mg/m3, it is emitted on inside and outside mountain stream, factories and miness district, some row Yu Jiang, river, lake, sea
Among, cause the severe contamination of sky, land, ocean, cause serious harm and loss to the lives and properties of the mankind.
China's mercury process Caustic soda produces more than 100,000 tons per year, annual consumption hydrargyrum more than 50 tons.In plastics industry Production of PVC,
Using mercuric chloride catalyst, its mercuric chloride, calomel mass fraction are 10%～15%, and China has more than 1000 tons useless hydrargyrum to touch every year
Matchmaker discharges.Therefore the improvement of hydrargyrum slag is the important topic of environmental conservation.Of a great variety due to hydrargyrum slag, ingredient is different,
So the administering method of hydrargyrum slag is the most different.Domestic and international commonly used roasting method, curable type method, oxidizing process, landfill method etc., however it remains
All difficulties and problem.
China's year produces the several hundred million ton of solid waste, and hazardous waste generation of current year is measured about 60,000,000 tons, also increased year by year
Adding, China's population and industry concentrate on east, substantial amounts of waste incineration aircraft residue, solid waste, the landfill of hazardous waste
Not only needing long-term management, maintenance, also can occupy the soil that east China is limited, a large amount of landfills are also Homeland Securities from now on
Major hidden danger.
Should find a way out for solid waste, hazardous waste, flying ash, residue, outlet should be to form certain commodity
And being economic, permanent secure, this commodity itself have huge market demand, be large enough to hold by solid waste,
The quantity of new, the qualified commodity that hazardous waste, flying ash, residue are formed.
Summary of the invention
To achieve these goals, the present invention is by the following technical solutions:
Hydrargyrum slag ceramic aggregate, it is characterised in that hydrargyrum slag ceramic aggregate nickel metallurgy waste residue and clay (unselected clay or the most dangerous
The unselected clay of waste pollution or ceramic clay) manufacture, hydrargyrum ＜ 0.01mg/L, arsenic ＜ in the leachate of hydrargyrum slag ceramic aggregate
0.02mg/L, chromium ＜ 1.3mg/L, cadmium ＜ 0.04mg/L, nickel ＜ 0.2mg/L, lead ＜ 0.2mg/L；The accumulation of hydrargyrum slag ceramic aggregate
Density 200kg 1800kg/m3, as aggregate, roadbed material, oil well crack backing material.
Hydrargyrum slag ceramic aggregate manufacture method, it is characterised in that comprise the following steps:
A. get the raw materials ready: hydrargyrum slag is adjusted to moisture content 30 50%(wet basis), and ball milling becomes the hydrargyrum 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 hydrargyrum slag and clay are separately dried, are crushed into 80 120 mesh powder
Last standby；
B. dispensing stirring mixing: hydrargyrum slag: clay 25 65:35 75(is all converted into siccative weight ratio), hydrargyrum slag mud is with dry
Clay powder be thoroughly mixed and become mixing pug；Or through being sufficiently mixed when above-mentioned hydrargyrum slag and clay are all to be dried powder
After the stirring that adds water become moisture content 15 25%(wet basis) mixing pug；Adjust with the silicate content in clay according to hydrargyrum slag
Ratio, makes there are enough one-tenth porcelain materials in mixing pug；Reduce the ratio that clay adds as far as possible, with reach final material decrement and
Energy-conservation effect；
C. pelletize is extruded: above-mentioned mixing pug is become diameter 10 20 millimeters, length 15 30 milli with extruding granulator granulation
The hydrargyrum slag ceramic aggregate biscuit of rice；
D. rotary kiln burns till: the wet hydrargyrum slag ceramic aggregate biscuit of molding is directly entered rotary kiln, is arrived back by rotary kiln
Rotary kiln outlet be gradually completing dry, burn till overall process, firing temperature 1,100 1300 DEG C, become hydrargyrum slag ceramic aggregate；
E. cooling: will export out the hydrargyrum slag ceramic aggregate of heat from rotary kiln through natural cooling or air cooling or water cooling,
To hydrargyrum slag ceramic aggregate product.
Hydrargyrum slag ceramic aggregate manufacture method of the present invention, it is characterised in that use in step a by Hazardous Wastes Management
Clay.
Hydrargyrum 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 1,210 1300 DEG C.
Hydrargyrum slag ceramic aggregate manufacture method of the present invention, it is characterised in that according to hydrargyrum slag in step a, b: clay 25 65:
35 75(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.
Hydrargyrum slag ceramic aggregate manufacture method of the present invention, it is characterised in that add the reducing agent of 1-3%, reducing agent in dispensing
Be coal and/or coke and/or flyash and/or slag or other there is the Organic substance of reproducibility.
Hydrargyrum slag ceramic aggregate manufacture method of the present invention, it is characterised in that add the reducing agent of 1-3%, reducing agent in dispensing
Be coal and/or coke and/or flyash and/or slag or other there is the Organic substance of reproducibility.
Use and be because 1 by the unselected clay of Hazardous Wastes Management, hydrargyrum 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 hydrargyrum 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 hydrargyrum 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 crystal and is the most fully wrapped by glass,
End-product is various mineral crystal, glass, the solid ceramic of pore composition, and its associative key is atomic bond and ionic bond, has very
High 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 peace
Quan Xing.Flue gas realizes utilizing and innoxious through collecting and processing.
The ceramic aggregate biscuit that hydrargyrum 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 with require the pottery of shape and size precision, outward appearance, color, surface smoothness, surface flatness etc., Shi
Device, 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 the highest
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 close with rubble, cobble, gives up with danger for cost and ordinary ceramsite
Thing, solid waste, incineration of refuse flyash etc. manufacture the developing direction that ceramic aggregate is the most inevitable.
The ceramic aggregate that hydrargyrum 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 hydrargyrum 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.Abfallwirtschaft wishes to realize: 1, permanent secure 2, formation commodity, it is to avoid landfill takes up an area
3, minimum treatment cost, the nickel metallurgy waste residue composition of each factory in various places output is different, and the high-temperature gasification material in clay is the most ever-changing,
Being suitable for producing the haydite becoming lightweight of aglite, what high-temperature gasification material was few then produces the heavier pottery that pore is few
Grain, its purposes is equivalent to rubble, cobble, and intensity can be higher than rubble, cobble, so the bulk density of hydrargyrum slag ceramic aggregate
It 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 hydrargyrum slag ceramic aggregate bulk density 200kg 1800kg/ manufactured with hydrargyrum slag and clay
m3, hydrargyrum slag ceramic aggregate can have various density, intensity, purposes；Different densities, the hydrargyrum slag ceramic aggregate of granularity can replace
Haydite, rubble, cobble, building sand.
Specific implementation method
Embodiment 1
Hydrargyrum slag is adjusted to moisture content 40%, and wet grinding becomes 100 mesh mud, and unselected clay, coal dust are dry grinded to 60 mesh, hydrargyrum slag: general
Logical clay 61:39(is all converted into siccative weight ratio), it is thoroughly mixed and becomes mixing pug, mixing pug is made with extruding
Grain machine pelletize becomes diameter 12 millimeters, the ceramic aggregate biscuit of length 22 millimeters, by direct for 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
Porcelain body material water-spraying control, obtains hydrargyrum slag ceramic aggregate product, hydrargyrum 0.007mg/L, arsenic 0.01mg/ in hydrargyrum slag ceramic aggregate leachate
L, chromium 1.1mg/L, cadmium 0.03mg/L, nickel 0.1mg/L, lead 0.06mg/L；Bulk density 500kg/m3, cylindrical compress strength 4.54Mpa,
As aggregate.
Embodiment 2
Being adjusted by hydrargyrum slag and become moisture content 38%, wet grinding becomes 100 mesh mud, is dry grinded extremely by the unselected clay of hydrargyrum slag severe contamination
60 mesh, copper fumes slag: the clay of pollution: flyash 50:45:5(is all converted into siccative weight ratio), it is thoroughly mixed and becomes
Mixing pug, becomes diameter 15 millimeters, the ceramic aggregate biscuit of length 25 millimeters by mixing pug with extruding granulator granulation, incites somebody to action
The wet ceramic aggregate biscuit of molding is directly entered rotary kiln, through being dried, burning till, firing temperature 1200 DEG C, becomes pottery bone
Material, by exporting out the ceramic aggregate quenching of heat from rotary kiln, obtains hydrargyrum slag ceramic aggregate product, and hydrargyrum slag ceramic aggregate soaks
Go out hydrargyrum 0.005mg/L in liquid, arsenic 0.01mg/L, chromium 1.2mg/L, cadmium 0.03mg/L, nickel 0.06mg/L, lead 0.1mg/L；Pile up close
Degree 1100kg/m3, cylindrical compress strength 5.2Mpa, as roadbed material.
Embodiment 3
Hydrargyrum slag is adjusted to moisture content 50%, and wet grinding becomes 120 mesh mud, ceramic clay, coke dry grinding to 80 mesh, hydrargyrum 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 15 millimeters is become with extruding granulator granulation, the ceramic aggregate element that length is 30 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 hydrargyrum slag ceramic aggregate product, hydrargyrum slag pottery bone
Material solid section water absorption rate 0.2%, its solid section is ceramic material, hydrargyrum 0.001mg/L in leachate, arsenic 0.005mg/L, chromium
0.9mg/L, cadmium 0.03mg/L, nickel 0.1mg/L, lead 0.07mg/L；Bulk density 1700kg/m3, cylindrical compress strength 12Mpa, it is used as
Oil well crack backing material.
Embodiment 4
By hydrargyrum slag, clay, cinder each dry pulverization process to 100 mesh, hydrargyrum slag: unselected clay: cinder powder 30:68:2, it is sufficiently stirred for
It is mixed into compound, compound adds water to 20%(wet basis), compound is used after twin shaft vacuum deairing machine pugging
Extruding granulator granulation and become diameter 13 millimeters, the ceramic aggregate biscuit of length 20 millimeters, by the wet ceramic aggregate element of molding
Base is directly entered rotary kiln, through being dried, burning till, firing temperature 1190 DEG C, becomes light ceramics aggregate, will export from rotary kiln
Out the porcelain ceramic aggregate natural cooling of heat, obtains hydrargyrum slag ceramic aggregate product, hydrargyrum slag ceramic aggregate solid section water absorption rate
0.3%, its solid section is ceramic material, hydrargyrum 0.003mg/L in leachate, arsenic 0.003mg/L, chromium 0.8mg/L, cadmium
0.001mg/L, nickel 0.5mg/L, lead 0.005mg/L；Bulk density 300kg/m3, cylindrical compress strength 5Mpa, builds as sponge city
If pavement seepage material.
Claims (6)
1. hydrargyrum slag ceramic aggregate, it is characterised in that hydrargyrum slag ceramic aggregate nickel metallurgy waste residue and clay (unselected clay or endangered
The unselected clay of danger waste pollution or ceramic clay) manufacture, hydrargyrum ＜ 0.01mg/L, arsenic ＜ in the leachate of hydrargyrum slag ceramic aggregate
0.02mg/L, chromium ＜ 1.3mg/L, cadmium ＜ 0.04mg/L, nickel ＜ 0.2mg/L, lead ＜ 0.2mg/L；The accumulation of hydrargyrum slag ceramic aggregate
Density 200kg 1800kg/m3, as aggregate, roadbed material, oil well crack backing material.
2. hydrargyrum slag ceramic aggregate manufacture method, it is characterised in that comprise the following steps:
A. get the raw materials ready: hydrargyrum slag is adjusted to moisture content 30 50%(wet basis), and ball milling becomes the hydrargyrum 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 hydrargyrum slag and clay are separately dried, are crushed into 80 120 mesh powder
Last standby；
B. dispensing stirring mixing: hydrargyrum slag: clay 25 65:35 75(is all converted into siccative weight ratio), hydrargyrum slag mud is with dry
Clay powder be thoroughly mixed and become mixing pug；Or through being sufficiently mixed when above-mentioned hydrargyrum slag and clay are all to be dried powder
After the stirring that adds water become moisture content 15 25%(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 hydrargyrum slag ceramic aggregate biscuit of rice；
D. rotary kiln burns till: the wet hydrargyrum slag ceramic aggregate biscuit of molding is directly entered rotary kiln, is arrived back by rotary kiln
Rotary kiln outlet be gradually completing dry, burn till overall process, firing temperature 1,100 1300 DEG C, become hydrargyrum slag ceramic aggregate；
E. cooling: will export out the hydrargyrum slag ceramic aggregate of heat from rotary kiln through natural cooling or air cooling or water cooling,
To hydrargyrum slag ceramic aggregate product.
Hydrargyrum 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.
Hydrargyrum 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 1,210 1300 DEG C.
Hydrargyrum slag ceramic aggregate manufacture method the most according to claim 2, it is characterised in that according to hydrargyrum slag in step a, b: viscous
Soil 25 65:35 75(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.
Hydrargyrum 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, reducing agent be coal and/or coke and/or flyash and/or slag or other there is the Organic substance of reproducibility.
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| 尹邦跃主编: "《陶瓷核燃料工艺》", 31 January 2016 * |
| 戴遐明主编: "《超微陶瓷粉体实用化处理技术》", 30 September 2009 * |
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