CN104844041A - Building rubbish recycling reclaimed sand powder efficient production system - Google Patents
Building rubbish recycling reclaimed sand powder efficient production system Download PDFInfo
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- CN104844041A CN104844041A CN201510261575.3A CN201510261575A CN104844041A CN 104844041 A CN104844041 A CN 104844041A CN 201510261575 A CN201510261575 A CN 201510261575A CN 104844041 A CN104844041 A CN 104844041A
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention provides a building rubbish recycling reclaimed sand powder efficient production system, and relates to the technical field of building rubbish resource regeneration. The building rubbish recycling reclaimed sand powder efficient production system comprises a raw material cabin, a hydraulic roller type powder grinding machine, a hyperfine powder grinding machine, a vibration sieving device, an airflow sorting machine, a cloth bag dust remover and a sand powder storage cabin, wherein a discharging opening of the raw material cabin is connected with a feeding opening of the hydraulic roller type powder grinding machine; a discharging opening of the hydraulic roller type powder grinding machine is connected with a feeding opening of the hyperfine powder grinding machine; a discharging opening of the hyperfine powder grinding machine is connected with a feeding opening of the airflow sorting machine; a sand powder discharging opening of the airflow sorting machine is connected with the cloth bag dust remover; a discharging opening of the cloth bag dust remover and a first crude sand powder discharging opening of the airflow sorting machine are both connected with the sand powder storage cabin; a second crude sand powder discharging opening of the airflow sorting machine is connected with a feeding opening of the vibration sieving device; a fine sand powder discharging opening and a crude sand powder discharging opening of the vibration sieving device are both connected with the sand powder storage cabin. The building rubbish recycling reclaimed sand powder efficient production system has the advantages of sustainability, high sand powder output rate, high standard, energy saving, environment protection and the like.
Description
Technical field
The present invention relates to building waste resource renewable technology field, be specially a kind of construction refuse resource reclaimed sand powder High-efficient Production system.
Background technology
12 " comprehensive utilization of resources instruction and large solid waste comprehensive utilization embodiment specify that the disposal target of waste material of buildings is " by 2015 years, big and medium-sized cities, whole nation waste material of buildings utilization ratio brings up to 30%, is increased newly the year Utilization ability of 4,000 ten thousand tons by implementation focus engineering.
Technical equipment of encouraging the advanced research and development and through engineering approaches application, the technology such as the strengthening of emphasis research and development regeneration aggregate, regeneration fine powder material activation and waste material of buildings fragmentation, sorting, classification are equipped.Require: the waste material of buildings 1) building 5-10 more than 1,000,000 tons in national big and medium-sized cities produces regeneration aggregate and resource product Demonstration Base; 2) 5-10 waste material of buildings comprehensive utilization equipment production line pilot project is built in area with good conditionsi.
Central authorities editorial member " notice about the division of labor of construction refuse resource recycling department " seven ministries and commissions such as National Development and Reform Committee, Ministry of Construction proposition: comprehensive coordination construction refuse resource recycling work; Formulate the policies and measures of building waste centralized recovery disposal and supervise the implementation of; Organize and coordinate the innovation of construction refuse resource reutilization technology and demonstration project.
The State Tax Administration of the Ministry of Finance is about the notice of comprehensive utilization of resources and other product value added tax policies " the following self-produced goods of sale is carried out and exempts value added tax policy: mix the specific building material product that waste residue ratio is not less than 30% in raw materials for production; With the Recycled Asphalt Pavement that waste asphalt concrete is raw material production, the proportion that waste asphalt concrete amount accounts for raw materials for production is not less than 30%.
In China in the past 20 ~ 30 years, building solid waste mainly takes the mode of direct landfill or stacking, thus the lower huge building solid waste storage of accumulation.
Domestic existing building 50,000,000,000 m2, if with average 50-100 Life Calculation, then need remove building 5-10 hundred million m2 every year, produce building solid castoff more than 1,000,000,000 tons; Increase newly every year and build house 1,500,000,000 m2, other build 300,000,000 m2, add up to 1,800,000,000 m2.According to rough Statistics, in the construction process of every 10,000 m2 buildings, only build solid waste and will produce 500 ~ 600 tons.Calculate with this, be then often only newly-built project of establishing and namely produce building solid waste about 100,000,000 tons.
According to 29 respondents (3 provinces, municipality directly under the Central Government, 23 prefecture-level cities, 3 county-level cities) statistics, nearly three annual removal floor area of building about 5,983 ten thousand square meters.All belong to 60-80 age buildings, based on brick mix structure.Calculate that the every annual removal floor area of building in the whole nation reaches 600,000,000 square meters, produce waste material of buildings more than 800,000,000 tons, the phenomenon that this building waste produces in a large number will continue 8-15 years.Building waste has accounted for the 30%-40% of municipal wastes total amount; Overwhelming majority building waste is just transported to countryside and rural area without any process and carries out air storage or landfill, causes environment confusion.
The process of concrete construction garbage as resource develops towards the technique direction of regenerated coarse aggregate, brick mix structure is that main building waste then needs towards regeneration fine sand, the technique direction development of regenerative micro powder, current China process reclaimed sand powder production technology has high energy consumption, efficiency is low, the shortcomings such as sand powder purity is low, and fineness is not high, and water ratio is high.
Brick mix structure is that the main aggregate of building waste after conventional crushing and screening has the features such as wet, sticky, assorted, mixed.The regeneration of building waste is shaked out, and the water content requirement of powder process to particle is higher, no matter adopts which type of production system, the output of sand powder will be affected when water ratio is more than 5% time, thus increase power consumption, production declining, operation cost is increased, and economic benefit declines.
Traditional building material industry abrasive dust production line can not meet the actual needs of reclaimed sand powder.Because starting material are the mixing materials based on vitrified brick, without regrading and the sand powder of drying control of dust, hyperfine abrasive, the sand powder that difficult quality reaches building material industry uses standard.Common pair roller type pulverizing mill, ball mill, vertical mill etc. roll milling equipment and as the powder process means of corase grind, can only not reach the standard of fine grinding, and the routine powder manufacturing apparatus flour extraction rate that shakes out is lower, and it is high to consume energy.Do not meet national energy-saving environmental protection policy.
National cement output about 2,400,000,000 tons in 2014.Following 15 years, along with the high speed development of China's economic, the demand of cement still can constantly rise.According to national regulation: will be mixed with the environmental friendly regenerated material being no less than 30% in cement producting material, produce the cement mill of 600,000 tons per year for one, the blending ratio of regenerative micro powder is 35%, then annual requirement will reach 200,000 tons.The market share of visible regenerative micro powder is very huge.
Concrete is as the most large building materials, and the more than ten years in the past remain fast development always.The concrete output in the whole nation in 2013 reaches 15 billion cubic meters.The addition content of regenerative micro powder in commerical ready-mixed concrete is substantially with flyash equivalent replace, and as every cube of concrete adds 100kg regenerative micro powder, then the demand of annual regenerative micro powder will reach about 100,000,000 tons.The market share of visible regenerative micro powder is very huge.
Natural sand is the main raw material of dry-mix, and regeneration fine sand can be used as the alternative materials of natural sand.According to relevant statistics display, dry powder mortar production enterprises 310 more than the 20000 tons of scales in the whole nation, annual production is about 1,040 ten thousand tons, is about 6,000,000 tons to the demand of natural sand.The market share of visible regeneration fine sand is very huge.
At construction refuse regenerated resources domain, how to improve the output of powder delivery of shaking out, if improve the mesh-of-grind of powder delivery, how precisely classification is collected to sand powder, the water ratio how solving sand powder is high, and how reducing the problems such as energy consumption is the problem needing constantly follow-up to explore.
Summary of the invention
The object of the present invention is to provide a kind of construction refuse resource reclaimed sand powder High-efficient Production system, overcome the existing construction refuse resource sand powder production line rate of output low, the defects such as energy consumption is high, grinding fineness is inadequate, water ratio is high, on-site noise is high.
The technical scheme realizing above-mentioned purpose is: construction refuse resource reclaimed sand powder High-efficient Production system, it is characterized in that: comprise raw material cabin, hydraulic pressure roller flour mill, hyperfine pulverizer, vibrosieve device, airflow separator, sack cleaner and sand powder storage bin;
The opening for feed of the discharge port connecting fluid roller pulverizing mill of described raw material cabin, the discharge port of hydraulic pressure roller flour mill connects the opening for feed of hyperfine pulverizer, the discharge port of hyperfine pulverizer connects the opening for feed of airflow separator, airflow separator top is provided with fine sand powder discharge port, the bottom of airflow separator is provided with the first coarse sand powder discharge port and the second coarse sand powder discharge port, first coarse sand powder discharge port is arranged on the top of the second coarse sand powder discharge port, the fine sand powder discharge port of described airflow separator connects sack cleaner, the discharge port of sack cleaner and the first coarse sand powder discharge port of airflow separator all connect sand powder storage bin, second coarse sand powder discharge port of described airflow separator connects the opening for feed of vibrosieve device, the fine sand powder discharge port of vibrosieve device is connected sand powder storage bin respectively with coarse sand powder discharge port.
Also be provided with between hydraulic pressure roller flour mill and hyperfine pulverizer and roughly grind vibrosieve device, the opening for feed of corase grind vibrosieve device is connected with the opening for feed of hydraulic pressure roller flour mill, the coarse sand powder discharge port of corase grind vibrosieve device is connected with the opening for feed of hydraulic pressure roller flour mill, and the fine sand powder discharge port of corase grind vibrosieve device is connected with the opening for feed of hyperfine pulverizer.
This system also comprises heat and dries device, described heat is dried device and is comprised natural gas transport station, direct-fired fuel gas hot-blast stove and airlock, natural gas transport station is connected with direct-fired fuel gas hot-blast stove, the air outlet of direct-fired fuel gas hot-blast stove is connected with hyperfine pulverizer, and described airlock is arranged on the opening for feed of hyperfine pulverizer.
Described hyperfine pulverizer also connecting and helps flow fan, helping flow fan for the sand powder after hyperfine pulverizer grinding being delivered to the discharge port of hyperfine pulverizer.
Described raw material cabin comprises for depositing the first feed bin that particle diameter is 30-50mm, for depositing the second feed bin that particle diameter is 10-30mm, for depositing the 3rd feed bin that particle diameter is 0-10mm, the discharge port of the first feed bin, the second feed bin, the 3rd feed bin is provided with the first discharge valve.
Described sand powder storage bin comprises fine sand warehouse, large micro mist warehouse and little micro mist warehouse, fine sand warehouse, the discharge port of large micro mist warehouse and little micro mist warehouse is all connected with the second discharge valve, the discharge port of described sack cleaner connects the opening for feed of little micro mist warehouse, first coarse sand powder discharge port of airflow separator is all connected large micro mist warehouse with the fine sand powder discharge port of vibrosieve device, and the coarse sand powder discharge port of vibrosieve device connects fine sand warehouse.
Described fine sand warehouse, the opening for feed of large micro mist warehouse and little micro mist warehouse is provided with fly-ash separator.
Beneficial effect of the present invention:
1, sustainability
Construction refuse resource reclaimed sand powder High-efficient Production system of the present invention, it is intelligentized production system, whole system can realize the uninterrupted production of 3*8 hour, and artificial demand number is no more than 4 people, 1 people hilllock is established respectively at corase grind, fine grinding establishes 1 people hilllock, and 1 people hilllock is established in storage room, and 1 people hilllock established by master control room. and everyone is equipped with the mobile phone of real-time production information data.
2, the sand powder high rate of output and high standard
The flour extraction rate of common flour production line to aggregate nearly about 20%, construction refuse resource reclaimed sand powder High-efficient Production system of the present invention, the flour extraction rate of aggregate reaches 35%, rely on hydraulic pressure roller flour mill, the abundant grinding of two equipment such as hyperfine pulverizer, raw material are shaked out thinner, grog powder delivery is more.And at corase grind, two links of fine grinding are respectively equipped with two vibratory screening apparatuss, make sand powder product specification reach industry completely and use standard.The rate of output that regenerative micro powder is high makes the remarkable in economical benefits of enterprise improve.
3, energy-conserving and environment-protective
Construction refuse resource reclaimed sand powder High-efficient Production system of the present invention, the comprehensive energy consumption of abrasive dust of shaking out is decline 30% relative to traditional p owder production system energy consumption, and corase grind fine grinding and twice screening plant all belong to energy-saving environmental protection device, widespread use in industry.
4, reclaimed sand powder water ratio is extremely low
Construction refuse resource reclaimed sand powder High-efficient Production system of the present invention, brick mixed building rubbish is large due to vitrified bond hole, easily absorbs water, so will obtain the reclaimed sand powder resource of standard, it is the key ensureing sand opaque amount that heat dries link.Heat of the present invention dries system disposition pulverizer effectively dries the sand powder of inherence, chamber mill rapidly.
5, cost of investment is low
Construction refuse resource reclaimed sand powder High-efficient Production system footprint area of the present invention is little about 1500 squares, adds up to 2-3 mu of ground.Add crushing and screening production line in early stage, with the 500000 tons of calculating of year treatment capacity, total floor space is no more than 30 mu of ground; With the 1000000 tons of calculating of year treatment capacity, total floor space is also no more than 60 mu of ground.And equipment investment cost is also relatively low, all devices is market routine or alternative equipment, has very strong marketing.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present invention.
Embodiment
As shown in Figure 1, the present invention includes raw material cabin 1, hydraulic pressure roller flour mill 2, hyperfine pulverizer 3, vibrosieve device 4, corase grind vibrosieve device 5, airflow separator 6, sack cleaner 7 and sand powder storage bin 8.
Raw material cabin 1 comprises for depositing the first feed bin 9 that particle diameter is 30-50mm, for depositing the second feed bin 10 that particle diameter is 10-30mm, for depositing, particle diameter is the 3rd feed bin 11, first feed bin 9, second feed bin 10 of 0-10mm, the discharge port of the 3rd feed bin 11 is provided with the first discharge valve 12.
Sand powder storage bin 8 comprises fine sand warehouse 13, large micro mist warehouse 14 and little micro mist warehouse 15, the opening for feed of fine sand warehouse 13, large micro mist warehouse 14 and little micro mist warehouse 15 is provided with fly-ash separator 16, and the discharge port of fine sand warehouse 13, large micro mist warehouse 14 and little micro mist warehouse 15 is all connected with the second discharge valve 17.
First feed bin 9, second feed bin 10, being provided with first below the discharge port of the 3rd feed bin 11 is conveyor 18, the discharge port of the first conveyor 18 is connected with the first chapelet 19, the opening for feed of the discharge port connecting fluid roller pulverizing mill 2 of the first chapelet 19, the discharge port of hydraulic pressure roller flour mill 2 connects the opening for feed of corase grind vibrosieve device 5 by the second chapelet 20, the coarse sand powder discharge port of corase grind vibrosieve device 5 passes through the opening for feed of the first transport pipe 21 connecting fluid roller pulverizing mill 2, the fine sand powder discharge port of corase grind vibrosieve device 5 is connected the opening for feed of hyperfine pulverizer 3 by the second rotary conveyor 22 and the 3rd chapelet 23.
The discharge port of hyperfine pulverizer 3 connects the opening for feed of airflow separator 6, airflow separator 6 top is provided with fine sand powder discharge port 24, the bottom of airflow separator 6 is provided with the first coarse sand powder discharge port 25 and the second coarse sand powder discharge port 26, first coarse sand powder discharge port 25 is arranged on the top of the second coarse sand powder discharge port 26, the fine sand powder discharge port 24 of airflow separator 6 connects sack cleaner 7 by wind pipe component 27, the discharge port of sack cleaner 7 connects the opening for feed of little micro mist warehouse 15 by the first enclosed transfer roller 28, second coarse sand powder discharge port 29 connects the opening for feed of vibrosieve device 4 by the second transport pipe 29, first coarse sand powder discharge port 25 of airflow separator 6 is all connected large micro mist warehouse 14 by the second enclosed transfer roller 35 with the fine sand powder discharge port of vibrosieve device 4, coarse sand powder discharge port the 3rd enclosed transfer roller 36 of vibrosieve device 4 connects fine sand warehouse 13.
This system also comprises heat and dries device 30, heat is dried device 30 and is comprised natural gas transport station 31, direct-fired fuel gas hot-blast stove 32 and airlock 33, natural gas transport station 31 is connected with direct-fired fuel gas hot-blast stove 32, the air outlet of direct-fired fuel gas hot-blast stove 32 is connected with hyperfine pulverizer 3, airlock 33 is arranged on the opening for feed of hyperfine pulverizer 3, hyperfine pulverizer 3 also connects and helps flow fan 34, help flow fan 34 to be delivered to the discharge port of hyperfine pulverizer 3 for the sand powder after being ground by hyperfine pulverizer 3.
Native system is the secondary production system after conventional crushing production line, and namely native system starting material are through conventional fragmentation, and screening, remove mud, air-dry, the tiny aggregate after decon, deironing, feed particles diameter is generally no more than 50mm.
The first step, working process of the present invention:
The first step, feeding: open one or more first discharge valve 12 in the first feed bin 9, second feed bin 10, the 3rd feed bin 11, aggregate is delivered to hydraulic pressure roller flour mill 2 by the first conveyor 18 and the first chapelet 19.
Second step, corase grind: grind under the continuous extruding of hydraulic pressure roller flour mill 2 pairs of rods.The pan feeding particle of this hydraulic pressure roller flour mill 2 is less than 50mm, and discharging particle is less than 4mm, and macrobead may be had to fall when logical roller, raw material grind to form recycled fine aggregate, regeneration fine sand; Grog grinds to form regenerative micro powder.
3rd step, screening: the sand powder particles that hydraulic pressure roller flour mill 2 grinds out is delivered in corase grind vibrosieve device 5 by the second chapelet 20 and sieves.Sieve diameter of this screening is 4mm, be greater than 4mm not by Screening Network, be delivered in hydraulic pressure roller flour mill 2 by the coarse sand powder discharge port of corase grind vibrosieve device 5; The sand powder particles being less than 4mm is then inputted in hyperfine pulverizer 3 by the second rotary conveyor 22 and the 3rd chapelet 23.
4th step, heat is dried: because the sand powder particles roughly ground through hydraulic pressure roller flour mill 2 exists certain water ratio, with in direct-fired fuel gas hot-blast stove 32 heat air delivery to hyperfine pulverizer 3, hot blast forms hot air flow at hyperfine pulverizer 3, temperature reaches 400 degree, effectively dries sand powder particles is instantaneous.
6th step, hyperfine abrasive: reclaimed sand powder is ground sand powder by the rotation at a high speed of the grinding element of hyperfine pulverizer 3, sand powder particles under the impact of bistrique, in the collision of self, friction, in shearing, reach crushing grinding effect.At the opening for feed of hyperfine pulverizer 3, airlock 33 is installed, hot blast is allowed to form continual hot air flow in the irregular direction of grinding element, sand powder after helping flow fan 34 to be ground by hyperfine pulverizer 3 is delivered to the discharge port of hyperfine pulverizer 3, and hyperfine abrasive terminates.
7th step, sand powder intelligence is selected: the reclaimed sand powder grinding out by hyperfine pulverizer 3 enters airflow separator 6 helping under the distinguished and admirable effect of flow fan 34, and airflow separator 6 carries out classification to reclaimed sand powder under distinguished and admirable effect.The sand powder particles diameter that particle diameter is greater than 2.35mm from the second coarse sand powder discharge port 29 by hyperfine pulverizer 3 by the second transport pipe 29 inputted vibration sifter 4, particle diameter is less than the regenerative micro powder particle that 2.35mm is greater than 0.075mm and is delivered to large micro mist warehouse 14 through the first coarse sand powder discharge port 25 of airflow separator 6, and particle diameter is less than the regenerative micro powder particle of 0.075mm and gas is entered in sack cleaner 7 from the fine sand powder discharge port 24 of airflow separator 6 by wind pipe component 27.The regenerative micro powder particle of sack cleaner to below 0.075mm is stored up, then enters little micro mist warehouse 15 by the first enclosed transfer roller 28
8th step, regeneration fine sand enters warehouse: be not directly delivered in fine sand warehouse 13 from coarse sand powder discharge port by the 3rd enclosed transfer roller 36 by the fine sand of the 2.35mm Screening Network of vibrosieve device 4, be less than 2.35mm, the regenerative micro powder being greater than 0.075mm is delivered to large micro mist warehouse 14 by the fine sand powder discharge port of vibrosieve device 4.
Claims (7)
1. construction refuse resource reclaimed sand powder High-efficient Production system, is characterized in that: comprise raw material cabin, hydraulic pressure roller flour mill, hyperfine pulverizer, vibrosieve device, airflow separator, sack cleaner and sand powder storage bin;
The opening for feed of the discharge port connecting fluid roller pulverizing mill of described raw material cabin, the discharge port of hydraulic pressure roller flour mill connects the opening for feed of hyperfine pulverizer, the discharge port of hyperfine pulverizer connects the opening for feed of airflow separator, airflow separator top is provided with fine sand powder discharge port, the bottom of airflow separator is provided with the first coarse sand powder discharge port and the second coarse sand powder discharge port, first coarse sand powder discharge port is arranged on the top of the second coarse sand powder discharge port, the fine sand powder discharge port of described airflow separator connects sack cleaner, the discharge port of sack cleaner and the first coarse sand powder discharge port of airflow separator all connect sand powder storage bin, second coarse sand powder discharge port of described airflow separator connects the opening for feed of vibrosieve device, the fine sand powder discharge port of vibrosieve device is connected sand powder storage bin respectively with coarse sand powder discharge port.
2. construction refuse resource reclaimed sand powder High-efficient Production system according to claim 1, it is characterized in that: be also provided with between hydraulic pressure roller flour mill and hyperfine pulverizer and roughly grind vibrosieve device, the opening for feed of corase grind vibrosieve device is connected with the opening for feed of hydraulic pressure roller flour mill, the coarse sand powder discharge port of corase grind vibrosieve device is connected with the opening for feed of hydraulic pressure roller flour mill, and the fine sand powder discharge port of corase grind vibrosieve device is connected with the opening for feed of hyperfine pulverizer.
3. construction refuse resource reclaimed sand powder High-efficient Production system according to claim 1, it is characterized in that: this system also comprises heat and dries device, described heat is dried device and is comprised natural gas transport station, direct-fired fuel gas hot-blast stove and airlock, natural gas transport station is connected with direct-fired fuel gas hot-blast stove, the air outlet of direct-fired fuel gas hot-blast stove is connected with hyperfine pulverizer, and described airlock is arranged on the opening for feed of hyperfine pulverizer.
4. construction refuse resource reclaimed sand powder High-efficient Production system according to claim 3, it is characterized in that: described hyperfine pulverizer also connects and helps flow fan, helping flow fan for the sand powder after hyperfine pulverizer grinding being delivered to the discharge port of hyperfine pulverizer.
5. construction refuse resource reclaimed sand powder High-efficient Production system according to claim 3, it is characterized in that: described raw material cabin comprises for depositing the first feed bin that particle diameter is 30-50mm, for depositing the second feed bin that particle diameter is 10-30mm, for depositing the 3rd feed bin that particle diameter is 0-10mm, the discharge port of the first feed bin, the second feed bin, the 3rd feed bin is provided with the first discharge valve.
6. the construction refuse resource reclaimed sand powder High-efficient Production system according to claims 1, it is characterized in that: described sand powder storage bin comprises fine sand warehouse, large micro mist warehouse and little micro mist warehouse, fine sand warehouse, the discharge port of large micro mist warehouse and little micro mist warehouse is all connected with the second discharge valve, the discharge port of described sack cleaner connects the opening for feed of little micro mist warehouse, first coarse sand powder discharge port of airflow separator is all connected large micro mist warehouse with the fine sand powder discharge port of vibrosieve device, and the coarse sand powder discharge port of vibrosieve device connects fine sand warehouse.
7. construction refuse resource reclaimed sand powder High-efficient Production system according to claim 6, it is characterized in that: described fine sand warehouse, the opening for feed of large micro mist warehouse and little micro mist warehouse is provided with fly-ash separator.
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| CN201510261575.3A CN104844041A (en) | 2015-05-21 | 2015-05-21 | Building rubbish recycling reclaimed sand powder efficient production system |
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Application publication date: 20150819 |
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