CN109482311A - A method of diatomite ore body raw material is handled using air-flow and selection by winnowing - Google Patents

A method of diatomite ore body raw material is handled using air-flow and selection by winnowing Download PDF

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Publication number
CN109482311A
CN109482311A CN201811532468.XA CN201811532468A CN109482311A CN 109482311 A CN109482311 A CN 109482311A CN 201811532468 A CN201811532468 A CN 201811532468A CN 109482311 A CN109482311 A CN 109482311A
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China
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air
raw
flow
powder
dust
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CN109482311B (en
Inventor
林永忠
陈绍宽
陈建新
王宏林
王冰
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Liaoning Meicheng decoration building materials Co., Ltd.
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Shenyang Dongao Nonmetallic Material Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00Other disintegrating devices or methods
    • B02C19/06Jet mills
    • B02C19/061Jet mills of the cylindrical type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24Passing gas through crushing or disintegrating zone
    • B02C23/32Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04CAPPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes

Abstract

The invention belongs to inner wall of building decorative materials technologies, more particularly to a kind of method using air-flow and selection by winnowing processing diatomite ore body raw material, effectively raise the product fineness and granularity of C, D grades of (three, level Four) diatomite, diatomite shell wall is not destroyed during realizing integration of operation, aperture dilatation, the modification for completing diatomite, realize the increase of specific surface area in diatomite.To realize that superpower absorption, removal formaldehyde, environmentally protective ecology lay a solid foundation for subsequent product exploitation, and whole preparation process simple process is easy to operate.

Description

A method of diatomite ore body raw material is handled using air-flow and selection by winnowing
Technical field
The invention belongs to dalle technical fields, and in particular to a kind of former using air-flow and selection by winnowing processing diatomite ore body The method of material.
Background technique
Diatom coloured silk white (powder) and aqueous diatom coating (liquid) are used as a kind of 21 century novel building environment protection interior wall wall Material is widely used in indoor decorating industry, on the one hand the diatom wall material of real production and operation has beautified indoor dress Exterior material solves the drawbacks such as pollution-free, nuisanceless, removal formaldehyde, and on the other hand largely exploits and used national treasured Expensive resource-diatomite level-one soil and a small amount of second level soil, it is to diatomite mineral resources that the diatomite made good use of, which prepares diatom ooze, Significant wastage and to follow-on irresponsibility, diatomite be before 1 years diatom extremely after the remains that leave, itself is just With the information before 1 years, it creates on the earth 70% or more oxygen, makes have life on the earth, referred to as " creates The seabed grassland of life " is qualified.So precious mineral resources are few in number, the whole world, the only U.S. and China have compared with The diatomite mineral resources of large area, due to being small mineral, discovery more than 100 years history of ability is not opened in the last hundred years in addition Hair, to be sunk into sleep on earth more than one hundred million years.
In recent years, the rise of diatom ooze decorative wall material has started diatom heat in the whole nation, has also risen diatomite mineral resources Unrest adopt random exploitation, miner produces I and II soil, and calcining is made primary product filter aid and sells rapidly under interests driving, The country with production diatom ooze, external, then further purification processes become high-grade filter aid (1 Wan Yuyuan per ton) sale, domestic Filter aid per ton only sell for 2000-3000 yuan/ton.Remaining a large amount of SiO2Three of content lower than 60%, level Four soil are filled out Into gully, resource significant wastage, vast scientific and technological circle knowledgeable people is extremely discontented, this patent be exactly under the conditions of this overall background, It sets up the project to solve the problems, such as three, level Four soil and the sustainable production and operation of raw ore, abandoned mine.Start to be researched and developed, be attacked through many years research and development Pass finally solves, and utilizes air-flow+selection by winnowing C, D grade (three, level Four) diatomite preparation diatom coloured silk white (powder) and aqueous diatomite The processing and preparation method of coating raw material.
So-called selection by winnowing is using the difference of floating velocity between material and impurity, by the method for wind-force removal of impurities.Selection by winnowing Purpose is the heavier impurity such as to remove impurity and dust, while can also remove part stone and soil block, this method be usually used in cottonseed and The cleaning of sunflower seeds oil plant and grain, tobacco etc..
So-called airflow milling is then that compressed air injects disintegrating area after Lavalle nozzle is accelerated into supersonic airstream and makes material In fluidization (flow expansion suspends boiling in fluidized-bed and collides with each other), therefore each particle movement shape having the same State.
Fluidized bed jet mill is that compressed air injects disintegrating area after Lavalle nozzle is accelerated into supersonic airstream and makes material In fluidization (flow expansion suspends boiling in fluidized-bed and collides with each other), therefore each particle movement shape having the same State.
Summary of the invention
The purpose of the present invention is to provide a kind of methods with air-flow and selection by winnowing processing diatomite ore body raw material, realize pair Diatomite tailing or discarded three, level Four soil have carried out resource reutilization, especially discard fill out ditch three, level Four to Changbai Mountain C, D grade soil of diatomite and the Wulanchabu League of Inner Mongolia commercial city mining area Xie Jiafang, (representation method used in two places is different, but essence It is identical, it is SiO2, diatomite of the content between 40-65), provide the application method of science, the silicon after air-flow+selection by winnowing Diatomaceous earth SiO2Content can reach 80% or more.Its granularity can be between 325 mesh, one to 1200 mesh, and whiteness was also increased to than originally 75-80 shows mud perfume (or spice) color, is properly added after brightening auxiliary material and can reach 85% or more, modulates various colorants for commercial operations and mentions Good raw material are supplied, the present invention is directed to be diatom coloured silk white (a kind of powder decorative material for internal wall of similar diatom ooze) and aqueous Diatom coating (a kind of non-toxic and tasteless pollution free green environment protection ecological interior wall coating) provides technical support.
The purpose of the present invention can be achieved through the following technical solutions: raw material uses clayey C, D grade diatomite ore body, Mineralogical composition include: diatom 55-60%, clayey 35-40%, surplus be silicate, quartz, irony and organic matter;Its chemistry Ingredient are as follows: SiO2: 60.02%-62.8%, Al2O3: 13.66%-14.79%, Fe2O3: 8.00%-9.14%;
Include the following steps: in disintegrating area, accelerated particle mutually clashes crushing in each nozzle joint;It is smashed Material is raised air-flow and is delivered to graded region, the fine powder for reaching granularity requirements is filtered out by horizontally disposed grading wheel, not up to The coarse powder of granularity requirements, which returns to disintegrating area, to be continued to crush;Qualified fine powder is obtained with air-flow by selecting powder to enter efficient cyclone separator It collects, dusty gas is discharged into atmosphere after dust-precipitator filtration, purification.
Specifically comprise the following steps:
(1) above-mentioned ore body is placed in airslide disintegrating mill and is crushed, airslide disintegrating mill uses compressed air for power, pressure The pressure of contracting air has minor fluctuations between 0.7-0.8MPa;
(2) the raw material supply in step (1): being that the promotion of raw material ore body is set in raw material cabin with elevator, then by defeated Expect that valve is sent into raw material the pulverizing chamber of airslide disintegrating mill, the partial size of the raw material ore body is 80-325 mesh;
(3) be crushed and classified: the above-mentioned indoor raw material ore body start powder of crushing that enters is broken, is symmetrically installed in the pulverizing chamber Two teams' nozzle, nozzle inside diameter (3mm -6mm) shape is cylindrical, the distance of two teams' nozzle, depending on the width of pulverizer, On two sides, accelerated particle mutually clashes crushing in the joint of each nozzle;
Raw material classification carried out by high-speed rotating grading wheel, the grading wheel be it is barrel-shaped, the center of bottom is fixed On the main shaft of direct-connected motor, the entrance of opening and micro mist collection system is opposite, and the opening and micro mist are collected It is handled between the entrance of system using sealing gland, blade is installed on the periphery of the grading wheel, and interlobate gap is sorting micro mist Channel, pulverized micro mist hikes up with air-flow, and superfine powder is small convenient for entering micro mist receipts by interlobate gap due to partial size Dirt system, biggish particle land after being splashed to outer wall, are crushed again under the centrifugal force effect of grading wheel;Adjustment point The revolving speed of step cone, the raw material ore body of available different-grain diameter, particle size range are 325-400 mesh;
(4) powder is selected;It is above-mentioned be crushed and classified after obtained raw mineral materials powder concentrator top is entered by micro mist collector Feed inlet is equipped with combined type screw propeller spreading disk hence into powder concentrator in powder concentrator, the raw mineral materials falls in it On, it is in suspended dispersion that bulk cargo disk high speed rotation, thinner particle hikes up upwards in material, and thicker or heavier material Dispersed to fall along barrel by spreading disk blade, completes to select powder for the first time;The more big and heavy material and material powder that will be fallen along barrel Group is broken up, and the lower section of spreading disk is equipped with dropping system, and the material fallen along cylinder arm enters dropping system, is formed material curtain, is being followed Under the effect of ring wind, fine powder raises upwards, is again introduced into pulverizing chamber and is classified, and last coarse powder is discharged from inner cone.
Cage rotor is equipped with above the spreading disk, the air-flow and be scattered in air-flow that cage rotor classification is enclosed near surface Material one act as high-speed rotation with classification circle under the drive of classification circle, uniform strong vortex gas is formed around classification is enclosed Stream, the classification circle is by speed regulating motor and Spindle control revolving speed, and when revolving speed increases, which also increases, at this time if kept It is certain to handle air quantity, then incising control will reduce, and fine powder attenuates;If revolving speed lowers, fine powder is thicker;After cage rotor is classified Fine grained enter in external each cyclone with circulated air, the whirlwind integrator is equipped with air outlet and air inlet knot Structure, is equipped with wind deflector at the snail angle of air inlet, and equipped with radiation shield in the inner conical-tube at snail angle, cyclone cylinder sleeve lower end is equipped with Flap, so that the fluid resistance of cyclone be made to decline to a great extent;Circulated air wind deflector effect under, with higher wind speed into Enter cyclone collector;At snail angle, enlarged wind speed reduces suddenly, accelerates particle sedimentation;Dusty gas filters net through dust-precipitator Atmosphere is discharged into after change.
The speed of feeding valve transferring raw material is to automatically control in the step (2), keeps the raw material of pulverizing chamber and air mixed The concentration of conjunction is relatively stable, and the control of the raw material and air melting concn is using the size of current for passing through grading wheel driving motor Control requires automatic adjustment size of current to reach concentration and stablizes according to granularity.
The opening of the grading wheel is opposite with the entrance of micro mist collection system, and keeps a fixed gap cannot be excessive.
The micro mist collection system is made of cyclone separator and dust collection, and superfine powder enters whirlwind by sealing pipeline Separator, air-flow rotate in cyclone separator, and superfine powder is thrown away landing, are finished product by discharge system discharge packaging;Rotation Wind separator is divided into level-one or two-stage;The air-flow blown out from cyclone separator, there are also part dust to enter dust collector, passes through Dust on cloth bag, tail gas are extracted out under the action of air-introduced machine, and dust content is considerably less, to prevent these dust to be discharged into atmosphere Middle pollution environment is equipped with dust filter unit, recycles dust, and tail gas is finally discharged into atmosphere;Entire production process by control cabinet from Dynamic control carries out, and control cabinet supplies entire productive power machine (not including gas source electricity consumption), can be adjusted with control parameter, be opened automatically Stop, automatic protection, fault alarm and autostop.
The modification infusorial earth raw material prepared after air-flow+selection by winnowing, specific surface area >=85m2/g;Fineness is 600+1000 Mesh.
Beneficial effects of the present invention:
It is white (powder) using air-flow+selection by winnowing C, D grade (three, level Four) diatomite preparation diatom coloured silk that the invention proposes one kind With the processing and preparation method of aqueous diatom coating (liquid) raw material.Effectively raise the production of C, D grades of (three, level Four) diatomite Product fineness and granularity, diatomite shell wall is not destroyed during realizing integration of operation, is completed the aperture dilatation of diatomite, is changed Property, realize the increase of specific surface area in diatomite.To realize superpower absorption, removal formaldehyde, green for subsequent product exploitation It is environmental and ecological to lay a solid foundation.And whole preparation process simple process is easy to operate.
Specific embodiment
Embodiment 1
This patent is carried out to Changbai Mountain in China three, level Four diatomite and C, D grades of Wulanchabu League of Inner Mongolia commercial city diatomite Turn waste into wealth development and utilization.Air-flow method or pneumatic concentration are respectively adopted in a large amount of experiment and is not able to satisfy the white (one kind of diatom coloured silk The powder interior trim wall material of similar diatom ooze) and aqueous diatom coating (a kind of interior wall coating of substitution emulsion paint) to the skill of moisture adsorption and releasing Art requirement.Ideal promising result is achieved to use air-flow+selection by winnowing new process progress test of many times, it is specific to prepare Method is:
1, gas source, this is the power of airslide disintegrating mill crushing process, the requirement to compressed air can 0.7-0.8MPa it Between, keep pressure to stablize, even if there is fluctuation, but frequency is unsuitable excessively high, otherwise influences the quality of product.
2, to gaseous mass, it is desirable that it is clean, dry, purified treatment should be carried out to compressed air, moisture content, the oil in gas Mist, dust are removed, and keep pulverized mineral products material not contaminated, especially to requiring the crushing requirement of the higher material of purity more It is high.
3, raw material supplies, and is that raw material is promoted in raw material cabin with elevator, raw material is then sent into air-flow by feeding valve The pulverizing chamber of pulverizer, the machine are stronger to the granularity adaptability of material, and general we require the raw material of 325 mesh.But it is practicing In, we, which knock down raw material and are processed from the mineral products material of 80 mesh to 325 mesh, also obtains good effect.Ingredient conveyor conveying The speed of raw material keeps the raw material of pulverizing chamber using automatically controlling.
Relatively stable with the concentration of air mixing, we can achieve when crushing ultra-fine powder yield most using such method It is good, it is crushed and classified: being symmetrically installed with two pairs of nozzles in pulverizing chamber, form supersonic airstream when compressed air passes through nozzle and take up Raw material is accelerated, and is mutually collided in space, and raw material is ground into superfine powder, crushing effect and nozzle inside diameter shape, distance, right Title property and raw material are related with the melting concn of air, and nozzle inside diameter shape determines that it forms the optimum speed of velocity of sound, distance, certainly Determine raw material and accelerate distance, whether speed reaches ideal.Raw material and air melting concn also influence product granularity and yield.
4, classification is carried out by high-speed rotating grading wheel;Grading wheel is fixed on as the center of circle " metal bucket " bottom On the main shaft of direct-connected motor, it is driven by motor high speed rotation, the entrance of opening and micro mist collection system is opposite, and keeps Certain interval can not be excessive, and otherwise not sorted coarse powder influences product matter from the gap into the pipeline of micro mist collection system Amount carries out sealing gland processing in gap location to prevent such event from occurring.Grading wheel is equipped with blade, interlobate seam with side Gap is to sort the channel of micro mist.Pulverized micro mist is hiked up with air-flow, and superfine powder is convenient for passing through interlobate seam since partial size is small Gap enters micro mist dust-precipitator, and biggish particle lands after being splashed to outer wall, carries out again under the centrifugal force effect of grading wheel It crushes.Adjust the revolving speed of grading wheel, the product of available different-grain diameter.
5, in pulverizing chamber, the control of the melting concn of raw material and air can be controlled with condenser type material density and be opened It closes or sensor controls.The machine is controlled using the size of current of grading wheel driving motor, and this control method is simple, feasible, just In control.When material and air melting concn increase, increase with the soot density that air-flow hikes up, the dust for hitting grading wheel increases Add, increases the electric current of driving motor, on the contrary the electric current of driving motor reduces, and using the size of current of electric, control conveying is former Material number, the melting concn of material and air can be made to be transferred to most preferably, when driving current increase stops conveying immediately, to reach out Powder and conveying keep dynamic equilibrium, guarantee the stabilization of product quality.
6, micro mist collection system is made of cyclone separator and dust collection;Superfine powder enters whirlwind point by sealing pipeline From device, air-flow rotates in cyclone separator, and superfine powder is thrown away landing, is finished product by discharge system discharge packaging.Whirlwind Separator can use level-one or two-stage.The air-flow blown out from cyclone separator, there are also part dust to enter dust collector, passes through Dust on cloth bag, tail gas are extracted out under the action of air-introduced machine, and dust content is considerably less, to prevent these dust to be discharged into atmosphere Middle pollution environment, we also increase a set of dust filter unit, recycle dust, and tail gas is finally discharged into atmosphere.Through Environmental Protection Department The repeated detection of door, the anti-Dust Capacity of row are significantly less than dust emission standard as defined in the environmental protection administration of country.Entire production Process is automatically controlled by control cabinet and is carried out, and control cabinet supplies entire productive power machine (not including gas source electricity consumption), can also be controlled Parameter adjustment, automatic start-stop, automatic protection, fault alarm and autostop.Ensure the steady of equipment safety operation and product quality It is fixed.
Embodiment 2
Selection by winnowing is entered back into after completing above-mentioned work described in embodiment 1, specifically includes that steps are as follows:
1, powder concentrator is entered by powder concentrator upper feed inlet, falls on and will be crushed to by airflow milling the diatom of 325-400 mesh On the integral combined type screw propeller spreading disk of native rotor, under the high speed rotation effect of spreading disk, material is on the one hand by used Property centrifugal force effect spread out around, while by propeller spreading disk blade generate ascending air effect raise upwards, spreading The boiling of charging tray screw blade on piece formation material.Thinner particle hikes up upwards in material, is in suspended dispersion, and it is relatively thick or Heavier material is dispersed to fall along barrel by spreading disk blade, completes to select powder for the first time.
2, the more big and heavy material and material powder ball that fall along barrel are broken up, through forming material curtain when dropping system, Under circulated air effect, fine powder raises upwards, is classified again, and last coarse powder is discharged from inner cone.
3, cage rotor is equipped with above spreading disk, the air-flow and be scattered in air-flow that cage rotor classification is enclosed near surface Material acts as high-speed rotation with classification circle one under the drive of classification circle, forms uniformly strong vortex gas around classification circle Stream.Centrifugal force size suffered by material in air-flow can be adjusted by the revolving speed of speed regulating motor, main shaft.When revolving speed increases When, which also increases, and at this time if keeping processing air quantity certain, incising control will reduce, and fine powder attenuates;If revolving speed lowers, Then fine powder is thicker.Thus the machine during the work time product fineness can according to specific technique require flexible modulation control, together When also have the function that adjust sandstone fineness modulus.
4, the fine grained after cage rotor is classified enters in external each cyclone with circulated air.Due to newly designing Cyclone use efficient air outlet structure, and added wind deflector at air inlet snail angle, increased in inner conical-tube If radiation shield, flap is added in cyclone cylinder sleeve lower end, so that the fluid resistance of cyclone be made to decline to a great extent.Circulation Wind enters cyclone collector under wind deflector effect with higher wind speed.At snail angle, enlarged wind speed reduces suddenly, accelerates Particle sedimentation, also improves the collection efficiency of cyclone.
The foregoing is merely the embodiment of the present invention, succeed in a kind of " ventilative aqueous diatomite of damping strong adsorption force interior wall Coating ", " a kind of the diatom coloured silk white background material and fabric decoration wall material of the ventilative superpower adsorption capacity of damping " and " a kind of ventilative damping is super The diatom dalle of strong adsorption capacity " on be able to apply and practice.For this purpose, the invention patent be not intended to limit it is of the invention The scope of the patents, all the equivalent structure or equivalent process transformation made by using the contents of the present specification are directly or indirectly used In other related technical areas, the technical field especially during diatomite C, D grades of soil of processing (three, level Four soil), It similarly include within the scope of patent count off of the invention.

Claims (6)

1. a kind of method using air-flow and selection by winnowing processing diatomite ore body raw material, which is characterized in that raw material uses clayey C, D The mineralogical composition of grade diatomite ore body, clayey C, the D grade diatomite ore body includes: diatom 55-60%, clayey 35- 40%, surplus is silicate, quartz, irony and organic matter;Its chemical component are as follows: SiO2: 60.02%-62.8%, Al2O3: 13.66%-14.79%, Fe2O3: 8.00%-9.14%;
Include the following steps: in disintegrating area, accelerated particle mutually clashes crushing in each nozzle joint;Smashed material It is raised air-flow and is delivered to graded region, the fine powder for reaching granularity requirements, not up to granularity are filtered out by horizontally disposed grading wheel It is required that coarse powder return disintegrating area continue to crush;Qualified fine powder is received with air-flow by selecting powder to enter efficient cyclone separator Collection, dusty gas are discharged into atmosphere after dust-precipitator filtration, purification.
2. a kind of method using air-flow and selection by winnowing processing diatomite ore body raw material according to claim 1, specifically includes Following steps:
(1) above-mentioned ore body is placed in airslide disintegrating mill and is crushed, airslide disintegrating mill uses compressed air for power, and compression is empty The pressure of gas has minor fluctuations between 0.7-0.8MPa;
(2) the raw material supply in step (1): it is that the promotion of raw material ore body is set in raw material cabin with elevator, then passes through feeding valve Raw material is sent into the pulverizing chamber of airslide disintegrating mill, the partial size of the raw material ore body is 80-325 mesh;
(3) be crushed and classified: the above-mentioned indoor raw material ore body start powder of crushing that enters is broken, is symmetrically installed two teams in the pulverizing chamber Nozzle, the nozzle inside diameter be 3mm -6mm, shape be cylinder, the distance of two teams' nozzle depending on the width of pulverizer, It installs on pulverizer two sides, accelerated particle mutually clashes crushing in the joint of each nozzle;
Raw material classification carried out by high-speed rotating grading wheel, the grading wheel be it is barrel-shaped, the center of bottom is fixed on directly Even on the main shaft of motor, the entrance of opening and micro mist collection system is opposite, the opening and micro mist collection system Entrance between handled using sealing gland, blade is installed on the periphery of the grading wheel, and interlobate gap be to sort leading to for micro mist Road, pulverized micro mist are hiked up with air-flow, and superfine powder, which is gathered dust since partial size is small convenient for by interlobate gap entering micro mist, is System, biggish particle land after being splashed to outer wall, are crushed again under the centrifugal force effect of grading wheel;Adjust grading wheel Revolving speed, the raw material ore body of available different-grain diameter, particle size range be 325-400 mesh;
(4) powder is selected;It is above-mentioned be crushed and classified after obtained raw mineral materials the charging on powder concentrator top is entered by micro mist collector Mouthful, hence into powder concentrator, combined type screw propeller spreading disk is equipped in powder concentrator, the raw mineral materials is fallen on, and is dissipated Charging tray high speed rotation, thinner particle hikes up upwards in material, is in suspended dispersion, and thicker or heavier material is by spreading The dispersion of disk blade is fallen along barrel, completes to select powder for the first time;The more big and heavy material and material powder ball that fall along barrel are beaten It dissipates, the lower section of spreading disk is equipped with dropping system, and the material fallen along cylinder arm enters dropping system, forms material curtain, makees in circulated air Under, fine powder raises upwards, is again introduced into pulverizing chamber and is classified, and last coarse powder is discharged from inner cone;
Cage rotor, the cage rotor classification air-flow enclosed near surface and the object being scattered in air-flow are equipped with above the spreading disk Expect to act as high-speed rotation with classification circle one under the drive of classification circle, form uniformly strong eddy airstream around classification circle, The classification circle is by speed regulating motor and Spindle control revolving speed, and when revolving speed increases, which also increases, at this time if holding is handled Air quantity is certain, then incising control will reduce, and fine powder attenuates;If revolving speed lowers, fine powder is thicker;It is thin after cage rotor is classified Particle enters in external each cyclone with circulated air, and the whirlwind integrator is equipped with air outlet and air inlet structure, into It is equipped with wind deflector at the snail angle in air port, radiation shield is equipped in the inner conical-tube at snail angle, cyclone cylinder sleeve lower end, which is equipped with, slows down Plate, so that the fluid resistance of cyclone be made to decline to a great extent;Circulated air enters rotation under wind deflector effect with higher wind speed Wind collector;At snail angle, enlarged wind speed reduces suddenly, accelerates particle sedimentation;Dusty gas is after dust-precipitator filtration, purification It is discharged into atmosphere.
3. a kind of method using air-flow and selection by winnowing processing diatomite ore body raw material according to claim 1, the step (2) speed of feeding valve transferring raw material is to automatically control in, and the concentration of the raw material and air mixing that keep pulverizing chamber is relatively stable, The control of the raw material and air melting concn is controlled using by the size of current of grading wheel driving motor, is wanted according to granularity It asks automatic adjustment size of current to reach concentration to stablize.
4. a kind of method using air-flow and selection by winnowing processing diatomite ore body raw material according to claim 1, the classification The opening of wheel and the entrance of micro mist collection system are at a distance of 50mm.
5. a kind of method using air-flow and selection by winnowing processing diatomite ore body raw material according to claim 2, the micro mist Collection system is made of cyclone separator and dust collection, and superfine powder enters cyclone separator by sealing pipeline, and air-flow is revolving Superfine powder, is thrown away landing by rotation in wind separator, is finished product by discharge system discharge packaging;Cyclone separator is divided into level-one Or two-stage;The air-flow blown out from cyclone separator, there are also part dust to enter dust collector, by the dust on cloth bag, Tail gas is extracted out under the action of air-introduced machine, and dust content is considerably less, is polluted environment to prevent these dust to be discharged into atmosphere, is equipped with Dust filter unit, recycles dust, and tail gas is finally discharged into atmosphere;Entire production process is automatically controlled by control cabinet to be carried out, control Cabinet supplies entire productive power machine, does not include gas source electricity consumption, can be adjusted with control parameter, automatic start-stop, automatic protection, failure Alarm and autostop.
6. the diatomite ore body raw material of the preparation of method described in -5 according to claim 1, which is characterized in that after air-flow+selection by winnowing The modification infusorial earth raw material of preparation, specific surface area >=85m2/g;Fineness is 600-1000 mesh, and whiteness is lower than 80, is higher than 70, than Surface area reaches 85m2/ gram or more.
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CN101305829A (en) * 2008-05-20 2008-11-19 奈曼旗中华麦饭石开发有限公司 Method for preparing medical stone micropowder and concentrating extract
CN202238664U (en) * 2011-10-11 2012-05-30 罗和建 Super-fine double-eddy horizontal rotational-flow powder selecting machine
CN104788051A (en) * 2015-03-18 2015-07-22 昆山大乘环保科技有限公司 Process for producing diatom mud
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