CN105906322A - Lake silt lightweight ceramsite with through holes - Google Patents

Lake silt lightweight ceramsite with through holes Download PDF

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Publication number
CN105906322A
CN105906322A CN201610480750.2A CN201610480750A CN105906322A CN 105906322 A CN105906322 A CN 105906322A CN 201610480750 A CN201610480750 A CN 201610480750A CN 105906322 A CN105906322 A CN 105906322A
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China
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lightweight
lake silt
hole haydite
silt
lake
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金白云
蒋文兰
许庆华
邱茗
王鲁海
袁欣
许盛英
袁长兵
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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
    • C04B38/009—Porous or hollow ceramic granular materials, e.g. microballoons
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
    • 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
    • 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
    • C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
    • 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
    • C04B33/30—Drying methods
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
    • A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
    • A01G24/35—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds containing water-absorbing polymers
    • 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
    • C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
    • 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
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • 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
    • 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
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
    • Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Fertilizers (AREA)

Abstract

The invention discloses lake silt lightweight ceramsite with through holes, and has the technical scheme with the essential point that the lake silt lightweight ceramsite with through holes is composed of lake silt, attapulgite, powdered attapulgite foaming agent, activated clay waste slag, floating beads, expanded perlite, expanded vermiculite and ferrous sulfate. The lake silt lightweight ceramsite with through holes is prepared by steps of carrying out stir mixing, extruding granulation, drying, roasting, heat insulation, screening and sealed packaging on the proportioned materials of the lake silt lightweight ceramsite with through holes. The lake silt lightweight ceramsite with through holes has the characteristics of large specific area, small bulk density, high water absorption, superior air permeability, attractive appearance, no odor, no harmful pathogenic bacteria, light weight, good strength and integration of micropores and macropores. When used for cultivating or planting different kinds of nursery stock, flowers, grass and vegetables, the root of the plant can absorb nutrient contents from water or liquid fertilizer in the lake silt lightweight ceramsite with through holes, so that well growth and development of the plant are ensured, the survival rate is high, the life time is longer, and the lake silt lightweight ceramsite with through holes is suitable for preparing soil-less culture substrates and nutrient soil.

Description

Lake silt lightweight through hole haydite
Technical field
The present invention relates to haydite, be specifically related to a kind of lake silt lightweight through hole haydite.
Background technology
The soil used when cultivating or plant various nursery stock, flowers and plants and vegetable, is to use the earth near on the spot mostly, then adds some plant ash or peat soil is bound together, and the moisture content of these soil is 12～20%, possibly together with substantial amounts of harmful levels of pathogens.
When using these soil incubations or plant various nursery stock, flowers and plants and vegetable, it is difficult to control the water yield of later stage moisturizing, soil moisture content after moisturizing is more than more than 30%, moisture in soil is higher, soil will be in semi-fluid cement paste or muddy, if soil does not has can obtain moisturizing in time, soil it would appear that the lump shape that hardens, all will directly influence the normal growth of plant again.
Along with improving constantly of afforestation project prescription, it is also soilless culture substrate frequently with materials such as lytag, leca, haydites of book structure and flower ceramsites.
Lytag, leca and haydites of book structure are a kind of artificial lightweight aggregates, using high-quality clay, shale or flyash is primary raw material, by rotary kiln high-temperature roasting, form through expanded, due to inside it in alveolate texture, thus there is the features such as lightweight, high-strength, heat conductivity is low, water absorption rate is little, (refer to national standard: GBT17431.1-2010 Light-weight aggregate and test method thereof).
Owing to artificial lightweight aggregate is after high-temperature roasting, its surface forms one layer of enamel, although micropore in alveolate texture inside artificial lightweight aggregate, but, the micropore of internal cellular shape structure is a kind of closed pore, the micropore of alveolate texture does not connects, and and external environment, water absorption rate is relatively low, moisture it is practically free of inside artificial lightweight aggregate, artificial lightweight aggregate is put in water body, the surface of water can only be floated on, therefore, artificial lightweight aggregate can only be sprinkling upon the top layer of soil, decorate as one, plantation each seedling wood can not be directly used in, the plant such as flowers and vegetable.
Chinese patent Authorization Notice No.: CN 102503539 B, authorized announcement date: on 04 17th, 2013, entitled " spherical attapulgite flower ceramsite ", disclose that " a kind of spherical attapulgite flower ceramsite, spherical attapulgite flower ceramsite is glued attapulgite clay powder, attapulgite clay mine tailing, red bentonite in powder, mud, kieselguhr mine tailing and powdered rice hulls by height and forms.By the dispensing of spherical attapulgite flower ceramsite through mixing, pelletize, roasting, cool down and screening is packaged as spherical attapulgite flower ceramsite ".
Spheroidal ceramsite preparation process: in granulation process; first powdery dispensing is processed into a kind of bead being less than 0.5 millimeter; then the spray water solution that will prepare; spray the bead surface in on-stream comminutor; again powdery dispensing is trickled down on the surface of moistening bead; through repeated sprinkling spray water solution and powdery dispensing is trickled down on the surface of moistening bead; parcel through layer upon layer; the volume of bead constantly increases; it is finally completed the overall process of pelletize, is prepared as the spheroidal haydite that a kind of strength ratio is higher.
Spheroidal haydite internal structure after roasting is tightr, although spheroidal haydite strength ratio is higher, but it is little to cause effective ratio area, and proportion and bulk density are the biggest, thus reduces absorbability and the water absorption rate of spheroidal haydite.
Spherical attapulgite flower ceramsite is a kind of spheroidal haydite, and in roasting process, internal being difficult to of spherical attapulgite flower ceramsite can be grilled thoroughly completely, directly influences the inherent quality of spherical attapulgite flower ceramsite.
Test through multiple sampling: the artificial lightweight aggregate average bulk density >=800kg/m sold on market, mean water absorption rate≤18%, normal soil average bulk density >=1020kg/m, mean water absorption rate≤26%, spherical attapulgite flower ceramsite average bulk density >=850kg/m, mean water absorption rate≤50%.
By contrast, the bulk density of these several haydites is the biggest, and water absorption rate is smaller, and user wishes to invent a kind of bulk density≤800kg/m, and the light ceramic of water absorption rate >=65%, to be applicable to prepare soilless culture substrate and Nutrition Soil.
In order to improve the water quality in lake, river, ensure the normal flood carrying capacity in river course and navigation channel, harbour unimpeded, China has carried out large-scale dredging and desilting engineering, according to statistics, only bottom mud in Taihu Lake ecological dredging amount just reaches about 6700 ten thousand steres, Delta of the Pearl River area dredging silt amount about 8000 ten thousand stere, still will produce substantial amounts of dredging silt in following 10 years water conservancies, lake, river and port dredging and desilting engineering, it has also become be difficult to the reality avoided.
Summary of the invention
It is an object of the invention to overcome weak point in prior art, it is provided that a kind of lake silt lightweight through hole haydite.
Lake silt lightweight through hole haydite is made up of lake silt, high viscous attapulgite clay, powdery attapulgite foaming agent, active white clay waste slag, floating bead, expanded perlite and expanded vermiculite.
The production method of lake silt lightweight through hole haydite: the dispensing of lake silt lightweight through hole haydite is stirred mixing, extruder grain, drying, roasting, be incubated, sieve after pack as lake silt lightweight through hole haydite.
The dredging silt produced in dredging work generally uses the method stacked or abandon to process, on the one hand the waste of a large amount of land resource is not only caused, ecological environment will be caused irremediable destruction, on the other hand, dredging silt contains heavy metal, organic pollution mostly, surrounding enviroment will necessarily be caused secondary pollution.
The dredging silt water content produced due to harbour, navigation channel, lake and river etc. is high and is difficult to dehydration, clay particle is many, intensity is low, volume is big, to the transport of mud, store and use brings many rough sledding, can not find again appropriate processing mode they to be disposed, so, only dredging silt is delivered to refuse depot together with mud band water, to treat its weathering, this processing method had both polluted environment, brought huge, a unnecessary expense to government again, the present invention selects moisture content≤75% of lake silt, granularity≤0.25 millimeter of lake silt.
High viscous attapulgite clay is with attapulgite clay as raw material, through crushing, soak, adding, roll-in, be dried, a kind of natural prodcuts that the technique such as pulverizing prepares, there is the good adhesion agent of viscosity higher, it is mainly used in the industries such as fine chemistry industry, building materials, petrochemical industry, agricultural, environmental protection, to improve quality and effect of product, the present invention selects dynamic viscosity >=2200 of high viscous attapulgite claymPa · s, product quality needs to meet the standard of JC/T 2266-2014 attapulgite clay goods, and the present invention selects granularity≤0.074 millimeter of high viscous attapulgite clay.
Powdery attapulgite foaming agent has that foaming capacity is strong, coefficient of foaming is high, unit volume bubble production volume is big, foam adventitia good toughness is the most broken, foam stability is good, can the most not froth breaking, the advantage such as foam hole size fine and smooth, that generate in medium is uniform, bleeding quantity is low and uses the compatibility of medium good, the present invention selects granularity≤0.074 millimeter of powdery attapulgite foaming agent.
Active hargil is a kind of odorless, tasteless, nontoxic white or cream-coloured powder or granule, active hargil after decolouring loses activity and becomes active white clay waste slag, these active white clay waste slags are all abandoned by some oil factories, if can not get processing in time, produce after lipid organic matter fermentation in active white clay waste slag and go mouldy and stench, the not only wasting of resources, pollute environment and groundwater quality, and fire hazardous, society and enterprise will be caused certain loss, the present invention selects granularity≤0.149 millimeter of active white clay waste slag.
Floating bead is a kind of fly ash hollow ball that can bubble through the water column, in canescence, the thin hollow of wall, has the several functions such as granule is thin, hollow, light weight, high-strength, wear-resisting, high temperature resistant, insulation insulation, flame-resistant insulation, and the present invention selects granularity≤0.149 millimeter of floating bead.
Perlite is expanded and becomes a kind of lightweight, multifunctional novel shaped material, has the features such as apparent density is light, heat conductivity is low, chemical stability is good, and the present invention selects granularity≤0.25 millimeter of expanded perlite.
Vermiculitum is after high-temperature roasting, and its volume energy expands rapidly several times to tens times, and the Vermiculitum after volumetric expansion, expanded vermiculite, is one of the lightest mineral, granularity≤0.149 millimeter of expanded vermiculite of the present invention.
Anhydrous slufuric acid ferrous iron is white powder, and the ferrous sulfate containing water of crystallization is pale green crystals, and the ferrous sulfate of 10% aqueous solution is acidity to Herba Cladoniae rangiferinae, and pH value is about 3.7, and in the present invention, ferrous sulfate is for adjusting the pH value of lake silt lightweight through hole haydite.
The technical scheme is that:
1, the dispensing of lake silt lightweight through hole haydite is made up of following component by weight percentage: lake silt 15～75%, high viscous attapulgite clay 5～30%, powdery attapulgite foaming agent 2～15%, active white clay waste slag 2～10%, floating bead 2～10%, expanded perlite 0.5～5%, expanded vermiculite 0.5～5%, ferrous sulfate 0～5% and water 0～25%.
2, the production method of lake silt lightweight through hole haydite:
(1) the dispensing of lake silt lightweight through hole haydite being inputted in the stirring mixer operated, stirring is mixed into the mixture of lake silt lightweight through hole haydite；(2) being transported in Squeezinggranulator by the mixture of lake silt lightweight through hole haydite, extruder grain is difform lake silt lightweight through hole haydite semi-finished product；(3) by lake silt lightweight through hole haydite semi-finished product, being transported in swinging drying oven dry, dry temperature and control at 150～250 DEG C, drying time controlled at 1～4 hour；(4) the lake silt lightweight through hole haydite semi-finished product after drying are transported to swinging roasting kiln roasting, and the temperature of combustor controls at 900～950 DEG C, and roasting time controlled at 1～3 hour；(5), by the lake silt lightweight through hole haydite semi-finished product after roasting, input is incubated in rustless steel cylinder storehouse, and temperature retention time controlled at 8～24 hours；(6) it is transported in vibrosieve sieve by the lake silt lightweight through hole haydite semi-finished product after insulation cooling, packs after screening as lake silt lightweight through hole haydite finished product；(7) extruder grain is difform lake silt lightweight through hole haydite semi-finished product, refers to that extruder grain is spheroidal, cylinder, quincuncial lake silt lightweight through hole haydite semi-finished product respectively according to design needs.
Powdery attapulgite foaming agent is to use by " powdery attapulgite foaming agent " filed in the present inventor on 05 26th, 2013, and Chinese patent Authorization Notice No. is: CN 103265213B, authorized announcement date: on 09 24th, 2014.
High viscous attapulgite clay has the dispersion of uniqueness, good colloidal nature and the higher absorbability such as saline and alkaline high temperature resistant, anti-, and has certain plasticity and cohesive force, dynamic viscosity >=2200 of high viscous attapulgite claymPa · s, adhesive force is good, beneficially the bonding between raw material, increases intensity and the absorbability of lake silt lightweight through hole haydite.
Active white clay waste slag is in roasting process, lipid in active white clay waste slag and organic matter participate in the roasting of lake silt lightweight through hole haydite jointly, improve the heat of combustion-gas flow, not only can save the energy, the inside also helping lake silt lightweight through hole haydite can be grilled thoroughly completely, increase the porosity within lake silt lightweight through hole haydite, to guarantee the quality of lake silt lightweight through hole haydite.
Powdery attapulgite foaming agent is when stirring is mixed into lake silt lightweight through hole haydite mixture, it will produce a certain amount of bubble, is conducive to increasing lake silt lightweight through hole haydite surface and internal porosity.
Floating bead, expanded perlite and expanded vermiculite can reduce the bulk density of lake silt lightweight through hole haydite, increase lake silt lightweight through hole haydite surface and internal porosity.
Lake silt lightweight through hole haydite semi-finished product moisture content after extruder grain is more than 30%, it is delivered directly to high-temperature roasting in swinging roaster, in high-temperature calcination process, the surface of haydite semi-finished product first starts sintering curing, and the water vapour of inside is difficult to rapid evaporation out, haydite semi-finished product will produce explosion, nor can grill thoroughly inside haydite semi-finished product.
Lake silt lightweight through hole haydite semi-finished product first are transported in swinging drying oven slowly dry by the present invention, dry temperature and control at 150～250 DEG C, lake silt lightweight through hole haydite semi-finished product after drying again are transported to swinging roasting kiln roasting, the temperature of combustor controls at 900～950 DEG C, may insure that and in roasting process, haydite is grilled thoroughly, explosion will not be produced.
It is still up to more than 700 DEG C in temperature in lake silt lightweight through hole haydite semi-finished product after roasting, lake silt lightweight through hole haydite semi-finished product after roasting are inputted in rustless steel cylinder storehouse and is incubated, the waste heat of self can be utilized, continue lake silt lightweight through hole haydite semi-finished product are uniformly heated, not only can ensure that and grill thoroughly completely inside lake silt lightweight through hole haydite, the effect of uniformly dispersing heat can also be played, improve the inherent quality of lake silt lightweight through hole haydite.
There is substantial amounts of micropore lake silt lightweight through hole haydite surface and inside, it it is a kind of open pore, open pore is the most through also to be communicated with the external world, the macropore at lake silt lightweight through hole haydite center is a kind of through hole, be conducive in roasting process, can completely grill thoroughly inside haydite, and the effective ratio area of haydite, intensity and reduction bulk density can be increased.
The face shaping of lake silt lightweight through hole haydite is designed as spheroidal, cylinder, the various shape such as quincunx, is conducive to increasing lake silt lightweight through hole haydite voidage each other and reducing the bulk density of lake silt lightweight through hole haydite.
There is the micropore being interconnected in a large number lake silt lightweight through hole haydite surface and inside, put in water and will sink under water rapidly, while sucking large quantity of moisture, are cemented out by the air in lake silt lightweight through hole haydite internal capillary.
Although the water absorption rate of lake silt lightweight through hole haydite is higher, even if during water absorption rate >=75%, lake silt lightweight through hole haydite surface is a kind of moistening state, obvious water does not leaks out, being packed together by lake silt lightweight through hole haydite, form numerous spaces each other, permeability is good, lake silt lightweight through hole haydite does not has dust in the dry state, is immersed in all the year round in water and will not produce disintegrate yet.
Lake silt lightweight through hole haydite has that specific surface area is big, bulk density is little, water absorption rate is high, permeability is superior, appearance and modeling free from extraneous odour attractive in appearance, there is no that harmful levels of pathogens, lightweight intensity is good, feature that micropore and macropore are integrated.
Normal growth in order to ensure plant is grown, by water, the fertilizer of liquid or inorganic fertilizer are sprayed in lake silt lightweight through hole haydite, lake silt lightweight through hole haydite can also be immersed in water, in the solution of fertilizer or inorganic fertilizer, lake silt lightweight through hole haydite absorbs after storing a certain amount of water or liquid fertilizer and takes out, for cultivating or plant each seedling wood, when flowers and plants and vegetable, the root of plant will absorb water or the nutritional labeling of liquid fertilizer from lake silt lightweight through hole haydite, guarantee that growth and development of plants is good, survival rate is high and the life-span is longer, and the number of times of moisturizing can be greatly reduced.
Lake silt lightweight through hole haydite is applicable to prepare soilless culture substrate and Nutrition Soil.
Accompanying drawing explanation
Fig. 1 is spheroidal lake silt lightweight through hole haydite schematic diagram, and Fig. 2 is spheroidal lake silt lightweight through hole haydite A-A profile；Fig. 3 is cylindrical lake silt lightweight through hole haydite schematic diagram, and Fig. 4 is cylindrical lake silt lightweight through hole haydite B-B profile；Fig. 5 is quincunx lake silt lightweight through hole haydite schematic diagram, and Fig. 6 is quincunx lake silt lightweight through hole haydite C-C profile.
As shown in the figure: 1 is the through hole of spheroidal lake silt lightweight through hole haydite, 2 is the through hole of cylindrical lake silt lightweight through hole haydite, and 3 is the through hole of quincunx lake silt lightweight through hole haydite.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
1, the dispensing of lake silt lightweight through hole haydite is made up of following component by weight percentage: lake silt 53%, high viscous attapulgite clay 20%, powdery attapulgite foaming agent 8%, active white clay waste slag 6%, floating bead 5%, expanded perlite 1%, expanded vermiculite 1%, ferrous sulfate 1% and water 5%.
2, the production method of lake silt lightweight through hole haydite: (1) the dispensing of lake silt lightweight through hole haydite being inputted in the stirring mixer operated, stirring is mixed into the mixture of lake silt lightweight through hole haydite；(2) being transported in Squeezinggranulator by the mixture of lake silt lightweight through hole haydite, extruder grain is difform lake silt lightweight through hole haydite semi-finished product；(3) by lake silt lightweight through hole haydite semi-finished product, being transported in swinging drying oven dry, dry temperature and control at 200～220 DEG C, drying time controlled at 2 hours；(4) the lake silt lightweight through hole haydite semi-finished product after drying are transported to swinging roasting kiln roasting, and the temperature of combustor controls at 940～950 DEG C, and roasting time controlled at 1 hour；(5), by the lake silt lightweight through hole haydite semi-finished product after roasting, input is incubated in rustless steel cylinder storehouse, and temperature retention time controlled at 16 hours；(6) it is transported in vibrosieve sieve by the lake silt lightweight through hole haydite semi-finished product after insulation cooling, packs after screening as lake silt lightweight through hole haydite finished product；(7) extruder grain is difform lake silt lightweight through hole haydite semi-finished product, refers to that extruder grain is quincunx lake silt lightweight through hole haydite semi-finished product according to design needs.
Quincunx lake silt lightweight through hole haydite average bulk density is 700kg/m, and water absorption rate is 76%.

Claims (3)

1. a lake silt lightweight through hole haydite, it is characterized in that, the dispensing of lake silt lightweight through hole haydite is made up of following component by weight percentage: lake silt 15～75%, high viscous attapulgite clay 5～30%, powdery attapulgite foaming agent 2～15%, active white clay waste slag 2～10%, floating bead 2～10%, expanded perlite 0.5～5%, expanded vermiculite 0.5～5%, ferrous sulfate 0～5% and water 0～25%.
Lake silt lightweight through hole haydite the most according to claim 1, it is characterized in that, moisture content≤75% of lake silt, granularity≤0.25 millimeter of lake silt, granularity≤0.074 millimeter of high viscous attapulgite clay, granularity≤0.074 millimeter of powdery attapulgite foaming agent, granularity≤0.149 millimeter of active white clay waste slag, granularity≤0.149 millimeter of floating bead, granularity≤0.25 millimeter of expanded perlite, granularity≤0.149 millimeter of expanded vermiculite.
Lake silt lightweight through hole haydite the most according to claim 1, it is characterized in that, the production method of lake silt lightweight through hole haydite: (1) the dispensing of lake silt lightweight through hole haydite being inputted in the stirring mixer operated, stirring is mixed into the mixture of lake silt lightweight through hole haydite；(2) being transported in Squeezinggranulator by the mixture of lake silt lightweight through hole haydite, extruder grain is difform lake silt lightweight through hole haydite semi-finished product；(3) by lake silt lightweight through hole haydite semi-finished product, being transported in swinging drying oven dry, dry temperature and control at 150～250 DEG C, drying time controlled at 1～4 hour；(4) the lake silt lightweight through hole haydite semi-finished product after drying are transported to swinging roasting kiln roasting, and the temperature of combustor controls at 900～950 DEG C, and roasting time controlled at 1～3 hour；(5), by the lake silt lightweight through hole haydite semi-finished product after roasting, input is incubated in rustless steel cylinder storehouse, and temperature retention time controlled at 8～24 hours；(6) it is transported in vibrosieve sieve by the lake silt lightweight through hole haydite semi-finished product after insulation cooling, packs after screening as lake silt lightweight through hole haydite finished product；(7) extruder grain is difform lake silt lightweight through hole haydite semi-finished product, refers to that extruder grain is spheroidal, cylinder, quincuncial lake silt lightweight through hole haydite semi-finished product respectively according to design needs.
CN201610480750.2A 2016-06-28 2016-06-28 Lake silt lightweight ceramsite with through holes Withdrawn CN105906322A (en)

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CN111362716A (en) * 2020-02-18 2020-07-03 中交第一公路勘察设计研究院有限公司 Ceramsite filter material prepared based on river sediment and method thereof
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