CN106431327A - Production method of multifunctional quincunx magnesite tailing lightweight through hole ceramsites - Google Patents
Production method of multifunctional quincunx magnesite tailing lightweight through hole ceramsites Download PDFInfo
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- CN106431327A CN106431327A CN201610854146.1A CN201610854146A CN106431327A CN 106431327 A CN106431327 A CN 106431327A CN 201610854146 A CN201610854146 A CN 201610854146A CN 106431327 A CN106431327 A CN 106431327A
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- C04B33/00—Clay-wares
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- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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Abstract
The invention discloses a production method of multifunctional quincunx magnesite tailing lightweight through hole ceramsites. The key point of the technical scheme is as follows: ingredients are subjected to stirring, extruding granulation, drying, roasting, heat preservation, screening and then sealed packaging to obtain the multifunctional quincunx magnesite tailing lightweight through hole ceramsites, wherein the ingredients comprise magnesite tailings, high-viscosity attapulgite clay, zeolite, active argil waste residues, active aluminum oxide, nano zinc oxide, light magnesium oxide, light calcium carbonate, hollow microspheres, expanded perlite, expanded vermiculite and sodium lauryl sulfate. The multifunctional quincunx magnesite tailing lightweight through hole ceramsites have the characteristics of good adsorptive property, large effective specific surface area, high porosity, small stacking density, high lightweight strength, and integrated micro-pores and macro-pores, and are suitable for various greening projects including water quality purification filtration, soil remediation, garden greening, roof greening, desert control and the like; and the production method of the multifunctional quincunx magnesite tailing lightweight through hole ceramsites is suitable for producing different shapes of multifunctional magnesite tailing lightweight through hole ceramsites, such as quincunx, cylindrical and spherical multifunctional magnesite tailing lightweight through hole ceramsites.
Description
Technical field
The present invention relates to haydite is and in particular to a kind of producer of multi-functional quincunx magnesite tailings lightweight through hole haydite
Method.
Background technology
In purification of water quality filtration treatment technique, need using substantial amounts of ceramic grain filter, the ceramic grain filter that tradition uses is
Using raw materials such as potter's clay, clay and flyash, after granulation, high temperature sintering forms.Cultivate or plant various nursery stocks, flowers and plants and vegetable
During dish, also frequently with lytag, leca, haydites of book structure and flower ceramsite as soilless culture substrate.
Lytag, leca and haydites of book structure are a kind of artificial lightweight aggregates, using high-quality clay, shale or fine coal
Ash is primary raw material, by rotary kiln high-temperature roasting, forms through expanded, is in alveolate texture because it is internal, thus has light
Matter, the features such as high-strength, thermal conductivity factor is low, water absorption rate is little,（Refer to national standard：GB/T 17431.1-2010 light-weight aggregate and its
Test method）.
Because artificial lightweight aggregate is after high-temperature roasting, its surface forms one layer of enamel although inside artificial lightweight aggregate being in
The micropore of alveolate texture, but, the micropore of internal cellular shape structure is a kind of closed pore, the micropore of alveolate texture not only that
Do not connect between this, and and external environment, water absorption rate is relatively low, is practically free of moisture inside artificial lightweight aggregate, will be artificial
Light-weight aggregate is put in water body, can only float on the surface of water, and therefore, artificial lightweight aggregate can only be sprinkling upon the top layer of soil, as one
Plant decoration, the plants such as the various nursery stocks of plantation, flowers and vegetables can not be directly used in, be not also suitable for purification of water quality filtration treatment
In technique.
Chinese patent Authorization Notice No.：CN 102503539 B, authorized announcement date：On 04 17th, 2013, entitled " circle
Spherical attapulgite flower ceramsite ", discloses that " a kind of spherical attapulgite flower ceramsite, spherical attapulgite flower ceramsite is by height
Viscous Concave-convex clay rod powder, Concave-convex clay rod mine tailing, red bentonite in powder, mud, diatomite mine tailing and powdered rice hulls group
Become.The dispensing of spherical attapulgite flower ceramsite is packaged as spheroidal through mixing, granulation, roasting, cooling and screening concavo-convex
Excellent flower ceramsite ".
Chinese patent Authorization Notice No.：CN 100423808 C, authorized announcement date：On October 08th, 2008, entitled " recessed
The production method of convex stick ceramic grain filter ", discloses " a kind of production method of concave convex stick ceramic grain filter, the main points of its technical scheme
It is that the production method of concave convex stick ceramic grain filter is：Dispensing, abrasive dust, granulation, roasting, sieve, be packaged as finished product.Concave convex stick ceramic grain
Filtrate is made up of Concave-convex clay rod, gangue and volcanic ash ".
Spheroidal ceramsite preparation process：(1) first powdery dispensing is added in the comminutor having operated, with the height preparing
In powdery dispensing, the vaporific aqueous solution of high pressure sticks on the surface of powdery dispensing pressure spray water spray solution, and powdery dispensing is delayed
Slowly it is processed into the bead that a kind of diameter is less than 0.5 millimeter, bead continues to roll in comminutor；(2) vaporific water-soluble by prepare
Liquid is sprayed at the surface of bead, and the bead in comminutor is sufficiently moistened in operation process, then powdery dispensing is trickled down
On the surface of moistening bead, powdery dispensing parcel sticks the surface in bead, and the volume of bead is increasing；(3) through repeatedly weighing
Multiple spray the vaporific aqueous solution and powdery dispensing trickled down on the surface of moistening bead, powdery dispensing and the vaporific aqueous solution are one
In the encapsulation process of the another layer of layer, promote the volume of bead constantly to be increased, be finally completed the overall process of granulation, be prepared into
A kind of higher spheroidal haydite of intensity.
Because spherical granules internal structure is very closely knit, greatly reduce the effective specific surface area of spherical granules, circle
The proportion of spheric granules and bulk density are all than larger.
Spheroidal haydite internal structure after roasting is even closer although the spheroidal haydite intensity after roasting compares
Height, but more cause effective ratio area and significantly reduce, and it is larger that proportion and bulk density remain ratio, thus significantly
Reduce absorption, purification, filter capacity and the water absorption rate of spheroidal haydite.
Spheroidal haydite, in roasting process, is difficult to inside haydite can grill thoroughly completely, by the spheroidal do not grilled thoroughly haydite
Put into and can produce explosion in water and be disintegrated, directly influence purification of water quality filter effect.
Through multiple sampling test：Artificial lightweight aggregate average bulk density >=800kg/m on the market, mean water absorption
Rate≤18%, spherical attapulgite flower ceramsite average bulk density >=850kg/m, mean water absorption rate≤50%, Attapulgite ceramic
Grain filtrate average bulk density >=950kg/m, mean water absorption rate≤40%.
By contrast, the bulk density of this several haydite all ratios are larger, cause effective specific surface area smaller, water absorption rate
Ratio is relatively low, and user wishes to invent that a kind of advantages of good adsorption effect, the rate of filtration be fast, bulk density≤800kg/m and water absorption rate >=
65% light ceramic, to be applied to purification of water quality filtration, soil remediation and various afforestation project.
Mineral Resources in China 80% is intergrowth mineral, and valuable phosphorus, potassium and trace element retain among mine tailing in a large number,
Tailings impoundment needs to take a large amount of soils, and a lot of Tailings Dams exceed the time limit or excess load uses, or even violation operation, so that Tailings Dam is existed
Greatly potential safety hazard, the people's property to surrounding area and life security cause seriously to threaten.
Magnesite is a kind of carbonic acid magnesium mineral, and it is the main source of magnesium, the solution effects containing magnesium after calcite, meeting
Calcite is made to become magnesite, therefore magnesite falls within calcite race, and the rock rich in magnesium also can be changing into magnesite, magnesite
Iron is usually contained, this is the result that iron or manganese are substituted off magnesium in ore deposit.There are substantial amounts of magnesite tailings in magnesite mining area, there is no energy
Developed well.
Content of the invention
The purpose of the present invention is to overcome weak point in prior art, provides a kind of multi-functional quincunx magnesite tailings light
The production method of matter through hole haydite.
The production method of multi-functional quincunx magnesite tailings lightweight through hole haydite：By multi-functional quincunx magnesite tailings
The dispensing of lightweight through hole haydite is stirred, extruder grain, drying, roasting, insulation, pack as multi-functional plum blossom after screening
Shape magnesite tailings lightweight through hole haydite.
The dispensing of multi-functional quincunx magnesite tailings lightweight through hole haydite is glued by magnesite tailings, high viscous attapulgite
Soil, zeolite, active white clay waste slag, activated alumina, nano zine oxide, light magnesium oxide, precipitated calcium carbonate, cenosphere, swollen
Swollen perlite, expanded vermiculite and lauryl sodium sulfate composition.
Magnesite is a kind of carbonic acid magnesium mineral, and it is the main source of magnesium, the solution effects containing magnesium after calcite, meeting
Calcite is made to become magnesite, therefore magnesite falls within calcite race, and the rock rich in magnesium also can be changing into magnesite, this
Grain fineness≤0.074 millimeter of bright selection magnesite tailings.
Attapulgite also known as palygorskite or Palygorskite, are the clay pits of zeopan containing Shuifu County of a kind of layer of chain structure
Thing, Concave-convex clay rod has the layer chain structure feature of uniqueness, and crystal is in needle-like, fibrous or fiber collection shape.Concave convex rod
Stone clay has good colloidal nature and the higher adsorption capacities such as the dispersion of uniqueness, high temperature resistant, salt resistance alkali.
High viscous Concave-convex clay rod is with Concave-convex clay rod as raw material, through broken, immersion, interpolation, roll-in, drying, powder
A kind of natural prodcuts that the technique such as broken is obtained, have the good adhesion agent of viscosity higher, are mainly used in fine chemistry industry, building materials, stone
The industries such as oiling work, agricultural, environmental protection, to improve quality and effect of product, the present invention selects the dynamic of high viscous Concave-convex clay rod
Power viscosity >=2200 mPa s, product quality needs to meet the standard of JC/T 2266-2014 Concave-convex clay rod product；This
Invention is from grain fineness≤0.074 millimeter of high viscous Concave-convex clay rod.
Natural zeolite has unique internal structure and Crystallochemical Properties so as to having water suction, absorption, selectively inhaling
The excellent physicochemical property such as attached, ion exchange, catalytic reaction, acidproof and radiation hardness, is a kind of new nonmetallic ore raw material, this
Invention is from grain fineness≤0.074 millimeter of zeolite.
Atlapulgite is a kind of odorless, tasteless, nontoxic white or cream-coloured powder or particle, and the activity after decolouring is white
Soil loses activity and becomes active white clay waste slag, some oily factories all by these active white clay waste slags abandon, if cannot and
When process, produces after the organic fermentation of lipid in active white clay waste slag and goes mouldy and stench, the not only wasting of resources, pollute environment and
Groundwater quality, and fire hazardous, will cause certain loss to society and enterprise；The present invention selects active white clay waste slag
Grain fineness≤0.149 millimeter.
Activated alumina is the solid material of a kind of porous, high degree of dispersion, has very big surface area, and its micropore surface has
Standby characteristic required by catalytic action, such as absorption property, surface-active, excellent heat endurance etc., so be widely used as
The catalyst of chemical reaction and catalyst carrier, the present invention selects grain fineness≤0.074 millimeter of activated alumina.
Nano zine oxide is a kind of new high function fine inorganic product geared to the 21st century, has common zinc oxide institute no
Particularity and purposes that method compares, can make high efficiency photocatalyst, for organic pollution in degrading waste water, environment purification etc..
Light magnesium oxide is the white loose unformed powder of lightweight, odorless, tasteless, and nontoxic, volume shared by light magnesium oxide is about
About the three times of heavy-burned magnesia, there are extremely fireproof heat-insulating property, reinforcing agent, adhesive, the present invention selects light magnesium oxide
Grain fineness≤0.074 millimeter.
Precipitated calcium carbonate fine particles, surface are rougher, and specific surface area is big, and precipitated calcium carbonate also has and do not settle, easily point
Dissipate, the characteristic such as good luster, the present invention selects grain fineness≤0.074 millimeter of precipitated calcium carbonate.
Cenosphere outward appearance is canescence, is a kind of loose, good fluidity powder body material, cenosphere proportion is little, table
Face is smooth, intensity is big, easily dispersion, and the present invention selects grain fineness≤0.149 millimeter of cenosphere.
Perlite is expanded and becomes a kind of lightweight, multifunctional novel shaped material, have that apparent density is light, thermal conductivity factor is low,
The features such as chemical stability is good, the present invention selects grain fineness≤0.074 millimeter of expanded perlite.
After high-temperature roasting, its volume energy expands rapidly several times to tens times to vermiculite, and the vermiculite after volumetric expansion is swollen
Swollen vermiculite, is one of mineral the lightest in the world, the present invention from the expanded vermiculite after pulverizing, the grain fineness of expanded vermiculite≤
0.074 millimeter.
Lauryl sodium sulfate is white or faint yellow powdery, is dissolved in water, insensitive to alkali and hard water, has decontamination, breast
Change and excellent foaming power, be a kind of nontoxic anion surfactant.
The technical scheme is that：
1st, the production method of multi-functional quincunx magnesite tailings lightweight through hole haydite：
(1) the stirring mixing dispensing input of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product having operated
In machine, stirring is mixed into the mixture of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, defeated through belt feeder
Deliver to standby in the feed bin on screw extruder pelletizer top；
(2) will be used for producing the core rod of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, be placed on screw extruding
In the template of comminutor, open the valve of feed bin, multi-functional quincunx magnesite tailings lightweight through hole semi-finished product is mixed
Compound is transported in screw extruder pelletizer, and extruder grain is that multi-functional quincunx magnesite tailings lightweight through hole haydite half becomes
Product；The external diameter of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product controls at 5～60 millimeters, and length controls 5
～60 millimeters, the through hole internal diameter at multi-functional quincunx magnesite tailings lightweight through hole semi-finished product center controls in ￠ 1～5 milli
Rice, number of openings controls at 1～6；
(3), by multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, it is transported to swinging drying oven through belt feeder
In dried, swinging drying oven drying temperature controls at 150～250 DEG C, and drying time controls at 1～4 hour, swinging
Drying oven exhaust temperature controls at 50～100 DEG C；
(4) by the multi-functional quincunx magnesite tailings lightweight through hole semi-finished product after drying, from the discharging of swinging drying oven
Mouth is transported to swinging roasting kiln roasting, and at 900～950 DEG C, roasting time controls little 1～4 the temperature control of combustion chamber
When, roaster tail gas temperature control is at 150～250 DEG C；
(5) the multi-functional quincunx magnesite tailings lightweight through hole semi-finished product after roasting is from the discharging opening of swinging roaster
Discharge, by the multi-functional quincunx magnesite tailings lightweight through hole semi-finished product after roasting, through the input of U-shaped conveying worm
It is incubated in stainless steel cylinder storehouse, temperature retention time controlled at 24～72 hours；
(6) open the valve in stainless steel cylinder storehouse, by cooled multi-functional quincunx magnesite tailings lightweight through hole after insulation
Semi-finished product is transported in cylinder vibratory sieve through belt feeder, is sieved by screen cloth, packs as many work(after screening
Can quincunx magnesite tailings lightweight through hole haydite finished product, the powder after screening discharges from powder discharge line, broken haydite
Discharge from broken haydite discharge line；
(7) dry and the technique of roasting adopts reflux type, be the high temperature hot gas stream that burner is ejected, by combustion chamber
The high temperature hot gas flow tube road of the heart enters swinging roaster, and swinging roaster tail gas thermal current enters swinging drying oven, returns
Rotatable drying furnace exhaust gas are discharged by drying oven exhaust pipe；Multi-functional quincunx magnesite tailings lightweight through hole haydite half becomes
Product, are introduced in swinging drying oven and are dried, and enter back into swinging roasting kiln roasting, multi-functional quincunx after roasting
Magnesite tailings lightweight through hole semi-finished product, discharges from the discharging opening of swinging roaster, multi-functional quincunx magnesite tail
After ore deposit lightweight through hole semi-finished product enters swinging drying oven and swinging roaster, with high temperature hot gas stream and roaster tail gas
The flow direction of thermal current is contrary.
2nd, the dispensing of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product is by weight percentage by following group
It is grouped into：Magnesite tailings 10～35%, high viscous Concave-convex clay rod 5～25%, zeolite 5～20%, active white clay waste slag 2～
10%th, activated alumina 1～5%, nano zine oxide 1～5%, light magnesium oxide 0～5%, precipitated calcium carbonate 1～5%, hollow
Microballon 1～5%, expanded perlite 0.5～5%, expanded vermiculite 0.5～5%, lauryl sodium sulfate 0.1～5% and water 5～
40%.
Magnesite tailings are a kind of carbonic acid magnesium minerals, and it is the main source of magnesium, often and calcite, dolomite, chlorite,
Talcum symbiosis, can increase the granule strength of multi-functional quincunx magnesite tailings lightweight through hole haydite.
High viscous Concave-convex clay rod has the dispersion of uniqueness, the good colloidal nature such as high temperature resistant, salt resistance alkali and higher
Adsorption capacity, and there is certain plasticity and cohesive force, the dynamic viscosity >=2200 mPa s of high viscous Concave-convex clay rod,
Adhesive force is good, is conducive to the bonding between raw material, increase multi-functional quincunx magnesite tailings lightweight through hole haydite intensity and
Adsorption capacity.
Natural zeolite has unique internal structure and Crystallochemical Properties so as to having water suction, absorption, selectively inhaling
The excellent physicochemical property such as attached, ion exchange, catalytic reaction, acidproof and radiation hardness, can strengthen multi-functional quincunx magnesite tailings
The absorption of lightweight through hole haydite and filter effect.
In roasting process, the lipid in active white clay waste slag is organic to participate in multi-functional plum blossom to active white clay waste slag jointly
The roasting of shape magnesite tailings lightweight through hole haydite, improves the heat of combustion-gas flow, not only can save energy, also help many
The inside of function is quincunx magnesite tailings lightweight through hole haydite can be grilled thoroughly completely, increases multi-functional quincunx magnesite tailings light
Matter through hole haydite surface and internal porosity.
Activated alumina, nano zine oxide and light magnesium oxide are conducive to improving multi-functional quincunx magnesite tailings lightweight
The adsorption effect of through hole haydite and the intensity increasing multi-functional quincunx magnesite tailings lightweight through hole haydite.
Precipitated calcium carbonate, cenosphere, expanded perlite and expanded vermiculite can reduce multi-functional quincunx magnesite tailings
The bulk density of lightweight through hole haydite, increases multi-functional quincunx magnesite tailings lightweight through hole haydite surface and internal hole
Rate.
Adopt lauryl sodium sulfate in the dispensing of multi-functional quincunx magnesite tailings lightweight through hole haydite, be conducive to
Substantial amounts of foam can be produced, to increase within multi-functional quincunx magnesite tailings lightweight through hole haydite in stirring mixed process
Micropore.
The face shaping of multi-functional quincunx magnesite tailings lightweight through hole haydite be designed as quincunx, be conducive to increase many
Magnesite tailings lightweight through hole haydite voidage each other that function is quincunx and the multi-functional quincunx magnesite tailings of reduction
The bulk density of lightweight through hole haydite.
The macropore at multi-functional quincunx magnesite tailings lightweight through hole haydite center is designed as through hole, is conducive to increasing many work(
Can quincunx magnesite tailings lightweight through hole haydite effective ratio area, reduce bulk density and increase multi-functional quincunx water chestnut
The porosity of magnesium ore deposit mine tailing lightweight through hole haydite..
Multi-functional quincunx magnesite tailings lightweight through hole semi-finished product moisture content after extruder grain is more than 30%, directly
Connect and be transported to swinging roaster high temperature roasting, in high-temperature calcination process, the surface of semi-finished product first starts sintering admittedly
Change, and the water vapour of inside is difficult to rapid evaporation out, semi-finished product will produce explosion, nor haydite half can be become
Grill thoroughly inside product.
Multi-functional quincunx magnesite tailings lightweight through hole semi-finished product is first transported to swinging drying oven by the present invention
In slowly dried, drying temperature controls at 150～250 DEG C, then will dry after multi-functional quincunx magnesite tailings light
Matter through hole semi-finished product is transported to swinging roasting kiln roasting, and the temperature control of combustion chamber, can be true at 900～950 DEG C
Protect and will not produce explosion in roasting process, be conducive to grilling thoroughly haydite.
Because swinging roaster is a kind of direct-fired mode, high temperature hot gas stream is from swinging roaster combustion chamber
After high temperature hot gas flow tube road enters in stove, by the effect of air-introduced machine, thermal current reaches the afterbody of swinging roaster quickly, when
When 900～950 DEG C, the exhaust temperature of roaster can reach 150～250 DEG C to chamber temperature, and tail gas thermal current will be from roasting
Discharge in furnace exhaust gas pipeline, tail gas thermal current can slattern in vain, causes direct economic loss.
The present invention adopts reverse-flow drying and roasting technique, and multi-functional quincunx magnesite tailings lightweight through hole haydite half becomes
After product enter drying oven and roaster, it is contrary with the flow direction of thermal current, is conducive to multi-functional quincunx magnesite
Mine tailing lightweight through hole semi-finished product slowly improves the temperature dried with roasting；In drying and roasting process, multi-functional plum blossom
Shape magnesite tailings lightweight through hole semi-finished product, through continuously uniformly drying and roasting, can be burnt inside semi-finished product
Thoroughly.
The present invention makes full use of the waste heat of swinging roaster tail gas, and the waste heat of roaster tail gas is directly inputted swinging
In drying oven, multi-functional quincunx magnesite tailings lightweight through hole semi-finished product is carried out preheat drying it is not necessary to increase
New thermal source, can save 10～25% energy.
It is still up to 700 DEG C in temperature in multi-functional quincunx magnesite tailings lightweight through hole semi-finished product after roasting
More than, will protect in the multi-functional quincunx magnesite tailings lightweight through hole semi-finished product input stainless steel cylinder storehouse after roasting
Temperature, it is possible to use the waste heat of itself, continues multi-functional quincunx magnesite tailings lightweight through hole semi-finished product is uniformly heated,
Not only can ensure that and will grill thoroughly completely inside multi-functional quincunx magnesite tailings lightweight through hole haydite moreover it is possible to play uniformly dispersing heat
The effect of amount, improves the inherent quality of multi-functional quincunx magnesite tailings lightweight through hole haydite.
And the production technology of conventional haydite be the haydite after roasting is directly inputted be aerated in rotary cooler cold
But pack afterwards, thermal loss is larger, and have influence on the quality of product.
There is substantial amounts of micropore multi-functional quincunx magnesite tailings lightweight through hole haydite surface and inside, are a kind of openings
Hole, open pore not only each other insertion also communicate with the external world, multi-functional quincunx magnesite tailings lightweight through hole haydite center big
Hole is a kind of through hole, is conducive in roasting process, can grill thoroughly inside haydite completely, and can increase the effective ratio table of haydite
Area, intensity and reduction bulk density.
There is the micropore being interconnected in a large number multi-functional quincunx magnesite tailings lightweight through hole haydite surface and inside, will be many
Function is quincunx, and magnesite tailings lightweight through hole haydite is put in water, it will sink under water rapidly, is sucking the same of large quantity of moisture
When, the air in multi-functional quincunx magnesite tailings lightweight through hole haydite internal capillary is cemented out, multi-functional quincunx
Magnesite tailings lightweight through hole haydite does not have dust in the dry state, is immersed in all the year round in water and will not produce disintegration yet.
Multi-functional quincunx magnesite tailings lightweight through hole haydite has that absorption property is good, effective ratio area big, hole
Rate is high, bulk density is little, permeability is superior, lightweight intensity height, appearance and modeling free from extraneous odour attractive in appearance, do not have harmful levels of pathogens, micropore
The feature being integrated with macropore.
During for purification of water quality filtration treatment technique, the rate of filtration is fast, and water environment capacity is strong, and the fine particles in water body will be by
In multi-functional quincunx magnesite tailings lightweight through hole haydite, micropore mazy is adsorbed and is filtered, and water body is in flow filtration
It is purified；Multi-functional quincunx magnesite tailings lightweight through hole haydite is suitable for the growth of each quasi-microorganism, on its surface and interior
Form stable, highly active biomembrane in portion's micropore, improve the clean-up effect to sewage for the microorganism.
For heavy-metal contaminated soil reparation when, multi-functional quincunx magnesite tailings lightweight through hole haydite can be put into
Fill in the soil of water, carry out 2～4 times turn over and weed rake, allow multi-functional quincunx magnesite tailings lightweight through hole haydite with
Soil sufficiently contacts, and multi-functional quincunx magnesite tailings lightweight through hole haydite will adsorb the part heavy metal in soil, and 3
With specific purpose tool, the multi-functional quincunx magnesite tailings lightweight through hole haydite in soil is taken out after～10 days, in order to reduce soil
Heavy metal pollution in earth.
After the multi-functional quincunx magnesite tailings lightweight through hole haydite having adsorbed part heavy metal in soil is taken out,
Carried out using methods such as chemical precipitation, redox process, solvent extraction and separation, absorption method, membrane separation process or ion-exchanges
Regeneration is processed, and multi-functional quincunx magnesite tailings lightweight through hole haydite, after regeneration process, inputs in swinging drying oven
Dried, can be repeatedly used.
Because multi-functional quincunx magnesite tailings lightweight through hole haydite surface and internal micropore are interconnected, when
Inside and outside haydite, mazy micropore, by after the fine particles adsorption saturation in water body, takes High-Pressure Water to multi-functional quincunx water chestnut
Magnesium ore deposit mine tailing lightweight through hole haydite is backwashed, and quickly can rinse the fine particles adsorbing in micropore inside and outside haydite dry
Only, it is used further to the purification of water quality filtration treatment program of next round.Have that the purification of water quality rate of filtration is fast, backwash effect is good, fortune
The high feature of line period length, utilization rate.
Although the water absorption rate of multi-functional quincunx magnesite tailings lightweight through hole haydite is higher, even if water absorption rate >=80%
When, the appearance of multi-functional quincunx magnesite tailings lightweight through hole haydite is a kind of moistening state, not obvious water
Leak out, multi-functional quincunx magnesite tailings lightweight through hole haydite is packed together, forms numerous skies each other
Gap, will not be bonded together, and permeability is good.
Normal growth in order to ensure plant is developed, and water, the fertilizer of liquid or inorganic fertilizer are sprayed at multi-functional plum blossom
It is also possible to be immersed in multi-functional quincunx magnesite tailings lightweight through hole haydite in shape magnesite tailings lightweight through hole haydite
In the solution of water, fertilizer or inorganic fertilizer, it is a certain amount of that multi-functional quincunx magnesite tailings lightweight through hole haydite absorbs storage
Take out after water or liquid fertilizer, during for cultivating or plant various nursery stocks, flowers and plants and vegetables, the root of plant is from multi-functional quincunx
Nutrient content in water or liquid fertilizer is absorbed it is ensured that growth and development of plants is good, survival rate in magnesite tailings lightweight through hole haydite
The high and life-span is longer, and can greatly reduce the number of times of moisturizing.
It is green that multi-functional quincunx magnesite tailings lightweight through hole haydite is applied to purification of water quality filtration, soil remediation, gardens
Multiple greening works such as change, green barren hill, roof greening, alkaline land improvement, control of desert, Grassland Desertification improvement and home gardening
Journey.
The production method of multi-functional quincunx magnesite tailings lightweight through hole haydite be applied to production quincunx, cylindrical,
The multi-functional magnesite tailings lightweight through hole haydite of different shapes such as spheroidal.
Brief description
Fig. 1 is the total schematic diagram of the technological process of production of multi-functional quincunx magnesite tailings lightweight through hole haydite, and Fig. 2 is crowded
Pressure prilling schematic flow sheet, Fig. 3 is to dry and roasting technique schematic flow sheet, and Fig. 4 is insulation and sieving technology flow process is shown
It is intended to, Fig. 5 is the schematic diagram of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, and Fig. 6 is multi-functional quincunx
To profile, Fig. 7 is multi-functional quincunx magnesite tailings lightweight through hole to the A-A of magnesite tailings lightweight through hole semi-finished product
The product schematic diagram of haydite, Fig. 8 is the product schematic diagram of Multi-functional circular cylindricality magnesite tailings lightweight through hole haydite, and Fig. 9 is many
The product schematic diagram of function spheroidal magnesite tailings lightweight through hole haydite.
As shown in the figure：1 is the dispensing of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, and 2 is that stirring is mixed
Conjunction machine, 3 is the mixture of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, and 4 is belt feeder, and 5 is feed bin, 6
It is valve, 7 is screw extruder pelletizer, 8 is the template of screw extruder pelletizer, 9 is for producing multi-functional quincunx magnesite
The core rod of ore deposit mine tailing lightweight through hole semi-finished product, 10 is multi-functional quincunx magnesite tailings lightweight through hole semi-finished product,
11 is belt feeder, and 12 is swinging drying oven, and 13 is swinging drying oven drying temperature, and 14 is roaster tail gas thermal current, 15
It is roaster tail gas temperature, 16 is the discharging opening of swinging drying oven, 17 is the multi-functional quincunx magnesite tail after drying
Ore deposit lightweight through hole semi-finished product, 18 is swinging roaster, and 19 is the temperature of combustion chamber, and 20 is the high temperature hot gas stream of combustion chamber
Pipeline, 21 is the discharging opening of swinging roaster, and 22 is the multi-functional quincunx magnesite tailings lightweight through hole haydite after roasting
Semi-finished product, 23 is U-shaped conveying worm, and 24 is stainless steel cylinder storehouse, and 25 is stainless steel cylinder storehouse valve, and 26 is many after being incubated
Magnesite tailings lightweight through hole semi-finished product that function is quincunx, 27 is belt feeder, and 28 is powder discharge line, and 29 is broken
Haydite discharge line, 30 is cylinder vibratory sieve, and 31 is screen cloth, and 32 is that multi-functional quincunx magnesite tailings lightweight through hole haydite becomes
Product, 33 is high temperature hot gas stream flow direction, and 34 is swinging drying oven exhaust temperature, and 35 is drying oven exhaust pipe, and 36 is many
The external diameter of magnesite tailings lightweight through hole semi-finished product that function is quincunx, 37 is that multi-functional quincunx magnesite tailings lightweight is led to
The through hole internal diameter at hole semi-finished product center, 38 is the through hole of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product
Quantity, 39 is the length of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product.
Specific embodiment
With reference to embodiment, the invention will be further described：
1st, the production method of multi-functional quincunx magnesite tailings lightweight through hole haydite：
(1) the dispensing 1 of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product is inputted the stirring mixing having operated
In machine 2, stirring is mixed into the mixture 3 of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, through belt feeder 4
It is transported to standby in the feed bin 5 on screw extruder pelletizer 7 top；
(2) will be used for producing the core rod 9 of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, be placed on screw rod and squeeze
In the template 8 of pressure comminutor 7, open the valve 6 of feed bin 5, multi-functional quincunx magnesite tailings lightweight through hole haydite half is become
The mixture 3 of product is transported in screw extruder pelletizer 7, and extruder grain is multi-functional quincunx magnesite tailings lightweight through hole pottery
Grain semi-finished product 10；The external diameter 36 of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product controls at 8 millimeters, length 39
Control at 8 millimeters, through hole 38 internal diameter 37 at multi-functional quincunx magnesite tailings lightweight through hole semi-finished product center controls
1.5 millimeters of ￠, through hole 38 quantity controls at 1；
(3), by multi-functional quincunx magnesite tailings lightweight through hole semi-finished product 10, it is transported to swinging through belt feeder 11 and dries
Dried in dry stove 12, swinging drying oven 12 drying temperature 13 controls at 150～250 DEG C, and drying time controls little 2
When, swinging drying oven 12 exhaust temperature 34 controls at 50～80 DEG C；
(4) by the multi-functional quincunx magnesite tailings lightweight through hole semi-finished product 16 after drying, from swinging drying oven 12
Discharging opening 17 is transported to roasting in swinging roaster 18, and the temperature 19 of combustion chamber controls at 920～940 DEG C, roasting time control
At 2 hours, roaster tail gas temperature 15 controlled at 150～250 DEG C system,；
(5) multi-functional quincunx magnesite tailings lightweight through hole semi-finished product 22 the going out from swinging roaster 18 after roasting
Material mouth 21 is discharged, by the multi-functional quincunx magnesite tailings lightweight through hole semi-finished product 22 after roasting, through U-shaped spiral transferring
Send in machine 23 input stainless steel cylinder storehouse 24 and be incubated, temperature retention time controlled at 36 hours；
(6) open the valve 25 in stainless steel cylinder storehouse 24, by cooled multi-functional quincunx magnesite tailings lightweight after insulation
Through hole semi-finished product 26 is transported in cylinder vibratory sieve 30 through belt feeder 27, is sieved by screen cloth 31, close after screening
Envelope is packaged as multi-functional quincunx magnesite tailings lightweight through hole haydite finished product 32, and the powder after screening is from powder discharge line 28
Discharge, broken haydite is discharged from broken haydite discharge line 29；
(7) dry and the technique of roasting adopts reflux type, be the high temperature hot gas stream 33 that burner is ejected, by combustion chamber
The high temperature hot gas flow tube road 20 at center enters swinging roaster 18, and swinging roaster 18 tail gas thermal current 14 enters swinging
Drying oven 12, swinging drying oven 12 tail gas is discharged by drying oven exhaust pipe 35；Multi-functional quincunx magnesite tailings are light
Matter through hole semi-finished product 10, is introduced in swinging drying oven 12 and is dried, and enters back into roasting in swinging roaster 18,
Multi-functional quincunx magnesite tailings lightweight through hole semi-finished product 22 after roasting, from the discharging opening 21 of swinging roaster 18
Discharge, multi-functional quincunx magnesite tailings lightweight through hole semi-finished product 10 enters swinging drying oven 12 and swinging roasting
After stove 18, the flow direction with high temperature hot gas stream 33 and roaster tail gas thermal current 14 is contrary.
2nd, the dispensing of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product is by weight percentage by following group
It is grouped into：Magnesite tailings 28%, high viscous Concave-convex clay rod 18%, zeolite 10%, active white clay waste slag 4%, active oxidation
Aluminium 2%, nano zine oxide 2%, precipitated calcium carbonate 2%, light magnesium oxide 0%, cenosphere 2%, expanded perlite 1%, swollen
Swollen vermiculite 1%, lauryl sodium sulfate 2% and water 28%.
3rd, multi-functional quincunx magnesite tailings lightweight through hole haydite average bulk density is 720kg/m, and water absorption rate is
80%.
Claims (3)
1. a kind of production method of multi-functional quincunx magnesite tailings lightweight through hole haydite is it is characterised in that (1) will be multi-functional
In the stirring mixer that the dispensing input of quincunx magnesite tailings lightweight through hole semi-finished product has operated, stirring is mixed into
The mixture of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, is transported to screw extruding granulation through belt feeder
Standby in the feed bin on machine top；
(2) will be used for producing the core rod of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, be placed on screw extruding
In the template of comminutor, open the valve of feed bin, multi-functional quincunx magnesite tailings lightweight through hole semi-finished product is mixed
Compound is transported in screw extruder pelletizer, and extruder grain is that multi-functional quincunx magnesite tailings lightweight through hole haydite half becomes
Product；The external diameter of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product controls at 5～60 millimeters, and length controls 5
～60 millimeters, the through hole internal diameter at multi-functional quincunx magnesite tailings lightweight through hole semi-finished product center controls in ￠ 1～5 milli
Rice, number of openings controls at 1～6；
(3), by multi-functional quincunx magnesite tailings lightweight through hole semi-finished product, it is transported to swinging drying oven through belt feeder
In dried, swinging drying oven drying temperature controls at 150～250 DEG C, and drying time controls at 1～4 hour, swinging
Drying oven exhaust temperature controls at 50～100 DEG C；
(4) by the multi-functional quincunx magnesite tailings lightweight through hole semi-finished product after drying, from the discharging of swinging drying oven
Mouth is transported to swinging roasting kiln roasting, and at 900～950 DEG C, roasting time controls little 1～4 the temperature control of combustion chamber
When, roaster tail gas temperature control is at 150～250 DEG C；
(5) the multi-functional quincunx magnesite tailings lightweight through hole semi-finished product after roasting is from the discharging opening of swinging roaster
Discharge, by the multi-functional quincunx magnesite tailings lightweight through hole semi-finished product after roasting, through the input of U-shaped conveying worm
It is incubated in stainless steel cylinder storehouse, temperature retention time controlled at 24～72 hours；
(6) open the valve in stainless steel cylinder storehouse, by cooled multi-functional quincunx magnesite tailings lightweight through hole after insulation
Semi-finished product is transported in cylinder vibratory sieve through belt feeder, is sieved by screen cloth, packs as many work(after screening
Can quincunx magnesite tailings lightweight through hole haydite finished product, the powder after screening discharges from powder discharge line, broken haydite
Discharge from broken haydite discharge line；
(7) dry and the technique of roasting adopts reflux type, be the high temperature hot gas stream that burner is ejected, by combustion chamber
The high temperature hot gas flow tube road of the heart enters swinging roaster, and swinging roaster tail gas thermal current enters swinging drying oven, returns
Rotatable drying furnace exhaust gas are discharged by drying oven exhaust pipe；Multi-functional quincunx magnesite tailings lightweight through hole haydite half becomes
Product, are introduced in swinging drying oven and are dried, and enter back into swinging roasting kiln roasting, multi-functional quincunx after roasting
Magnesite tailings lightweight through hole semi-finished product, discharges from the discharging opening of swinging roaster, multi-functional quincunx magnesite tail
After ore deposit lightweight through hole semi-finished product enters swinging drying oven and swinging roaster, with high temperature hot gas stream and roaster tail gas
The flow direction of thermal current is contrary.
2. the production method of multi-functional quincunx magnesite tailings lightweight through hole haydite according to claim 1, its feature
It is, the dispensing of multi-functional quincunx magnesite tailings lightweight through hole semi-finished product is by weight percentage by following component group
Become：Magnesite tailings 10～35%, high viscous Concave-convex clay rod 5～25%, zeolite 5～20%, active white clay waste slag 2～
10%th, activated alumina 1～5%, nano zine oxide 1～5%, light magnesium oxide 0～5%, precipitated calcium carbonate 1～5%, hollow
Microballon 1～5%, expanded perlite 0.5～5%, expanded vermiculite 0.5～5%, lauryl sodium sulfate 0.1～5% and water 5～
40%.
3. the production method of multi-functional quincunx magnesite tailings lightweight through hole haydite according to claim 1, its feature
It is, grain fineness≤0.074 millimeter of magnesite tailings, grain fineness≤0.074 millimeter of high viscous Concave-convex clay rod, boiling
Grain fineness≤0.074 millimeter of stone, grain fineness≤0.149 millimeter of active white clay waste slag, the particle of activated alumina is thin
≤ 0.074 millimeter of degree, grain fineness≤0.074 millimeter of light magnesium oxide, grain fineness≤0.074 milli of precipitated calcium carbonate
Rice, cenosphere grain fineness≤0.149 millimeter, grain fineness≤0.074 millimeter of expanded perlite, the particle of expanded vermiculite
Fineness≤0.074 millimeter.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110194675A (en) * | 2019-06-18 | 2019-09-03 | 大连地拓环境科技有限公司 | A kind of magnesite barren rock prepares baking-free lightweight haydite and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105884336A (en) * | 2016-06-28 | 2016-08-24 | 蒋文兰 | Lightweight ceramsite with magnesite and through holes |
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- 2016-09-27 CN CN201610854146.1A patent/CN106431327A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105884336A (en) * | 2016-06-28 | 2016-08-24 | 蒋文兰 | Lightweight ceramsite with magnesite and through holes |
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| 戴维等: "《铁合金工程技术》", 30 June 2015 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110194675A (en) * | 2019-06-18 | 2019-09-03 | 大连地拓环境科技有限公司 | A kind of magnesite barren rock prepares baking-free lightweight haydite and preparation method thereof |
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Application publication date: 20170222 |