CN101585033A - Dry method mechanism building aggregate grading method and device - Google Patents
Dry method mechanism building aggregate grading method and device Download PDFInfo
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- CN101585033A CN101585033A CN 200910087688 CN200910087688A CN101585033A CN 101585033 A CN101585033 A CN 101585033A CN 200910087688 CN200910087688 CN 200910087688 CN 200910087688 A CN200910087688 A CN 200910087688A CN 101585033 A CN101585033 A CN 101585033A
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Abstract
The invention discloses a dry method mechanism building aggregate grading method and device. The method includes: separating the impurity for the ore raw material containing different atones, precrushing, anhydrous fine crushing, sieving, grading the finished product, and at last respectively recycling the aggregate finished products with different levels. The device of the invention comprises a impurity separator, a prebreaker, a fine crusher, a finished product sieving machine, a finished product sizing machine. The method and device of the invention are adopted, the whole production flow has no water, the crushing, the sieving and the grading are executed in the anhydrous condition, the used raw material is very wide, various ore raw materials can be adopted, 0 to 25 mm of products comprising stone dust, mechanical sand and broken stone are produced in the whole anhydrous mechanism, thus having saved resource, high productivity effect, low cost, no environment pollution and various finished product levels.
Description
Technical field
The present invention relates to building system sand technical field, relate in particular to method and system sand classifying equipoment that a kind of dry method mechanism building aggregate is the building sand classification.
Background technology
Along with the high speed development of China's building field, the consumption of building sand is also increasing, and natural sand granite-wash choosing is adopted in the production of traditional sandstone usually, and raw material is taken from the soil, and production process adopts the method system sand of washing.As Chinese patent 200620101331.5, the advantage of this patent has been to possess the function of fragmentation, screening, washed-out sand; It is to be solved to be that the domestic system sand machine system that generally uses installs respectively to the scene by units such as disintegrating machine, screening machine, sand washers, and with being with conveyer by making the problem that the sand flow journey connects to form.A kind of movable type system sandstone machine that integrates building stones fragmentation, screening, washed-out sand and removable function is provided, has made easy construction transfer place easy.
More than adopt the production process that sand and water carry out washed-out sand from the soil, brought very serious problem for the soil of country and the sustainable development of water resource.At first country forbids illegal mining sandstone on the soil.According to statistics, only the commerical ready-mixed concrete in 1 year in Beijing is one, and the annual 20000000 sides amount that needs is amounted to 40,000,000 tons of sandstones, amounts to about 8000 mu of land resource.The illegal mining sandstone not only causes the loss of State owned land resource but also environment is destroyed on the soil.Secondly, adopt washing system sand waste water resource.Only Beijing area statistics is an example with required 40,000,000 tons of sandstones, and every year is paid more about 2,000 ten thousand tons of water resource in the Beijing area for this reason.Moreover the sandstone industrial water mostly is illegal mining underground water mostly, therefore causes huge soil and water resource destruction and waste.
In addition, the comprehensive utilization of resources rate variance of traditional sandstone production.Valuable fine sand can be washed away and can't reclaim during because of technical reason water washing sandstone, the fine sand resource of being wasted accounts for the 20%-30% of total resources, and the thin more value of building sand is high more; And the product that traditional sandstone is produced is single, can only be single graded sand and stone, can not satisfy the demand of growing construction market for the sandstone different stage.
Summary of the invention
The objective of the invention is to solve the problem that is occurred in the above system sand production process and provide a kind of dry method mechanism building aggregate promptly with sand and the method and the system sand classifying equipoment that carry out classification.This method and apparatus adopts stone matter ore in preparation process, mechanism is gathered materials and carried out the classification of multiple granularity under omnidistance anhydrous state.Functions such as this method collection fragmentation, in small, broken bits and classification are one, and employed raw material is extensive, adopts anhydrous production, the utilization rate of resource is reached absolutely, and the rank of sand product are varied.
The invention provides two kinds of technical solutions and reach its goal of the invention.One is a kind of dry method mechanism building aggregate grading method, and the outstanding contributions of this method are to prepare and adopt omnidistance anhydrous mechanism when gathering materials and carry out classification, can adopt the ore of various different stone matter, and concrete steps are as follows:
The ore that will contain different stone matter carries out impurity to be separated, the precrushing of stone raw material is arrived less than 80mm, adopt the anhydrous method in small, broken bits will be less than the raw material pulverizing of 80mm to less than 25mm, to branch away greater than the rock screen of 5mm again, sand powder less than 5mm carries out the finished product classification, the finished product classification can be divided into the sand powder multiple other sand powder of level in the 0-5mm scope, the preferred sand powder of the present invention rank is the stone flour of 0-0.16mm, 0.16-5mm the sand powder, the finished product that gathers materials that will be divided into different stage at last reclaims respectively.
It two is a kind of dry method mechanism building aggregate grading equipment, comprises the raw material storage storehouse, conveyer, prebreaker, and finished bin, impurity separator, fine crusher, finished product screening machine, finished product grader; Wherein, one end of impurity separator links to each other with the raw material storage machine by conveyer, and the other end is connected with prebreaker, and an end of fine crusher is connected with prebreaker by conveyer, the other end links to each other with the finished product screening machine by conveyer, and the finished product screening machine is connecting the finished product grader; Finished bin links to each other with impurity separator and finished product grader respectively by conveyer, in order to the sand powder of the different stage that stores the non-stone matter impurity separated from impurity separator and tell from the finished product grader; The body of equipment can be closed or open.Equipment gathers materials and carries out classification in mechanism under omnidistance anhydrous state.Adopt stone matter ore.
Be provided with air blast in the finished product grader of the present invention, sand block plate, drapery panel, graded plate, air-introduced machine; Wherein: drapery panel is 60-100 degree angle with graded plate and links to each other, and the continuous angle of the best that the present invention selects is the 70-90 degree.The body of drapery panel and finished product grader joins, and air blast is arranged on the below of drapery panel, and the wind direction center of air blast is parallel with graded plate or not parallel.Air-introduced machine is arranged on the top of graded plate and joins with the body of finished product grader, above drapery panel, be provided with perpendicular sand block plate, and and drapery panel between leave certain space, make the sandstone that gets off from charging aperture arrive orderlyly and be evenly arranged on the drapery panel.Drapery panel is provided with the three-dimensional cloth step of several triangles, with so that the sand material evenly arrange.The graded plate of finished product grader is provided with several transport pipelines that gathers materials, in order to collect and to transport the sand powder of different stage.The body of finished product grader can be closed or open.
Several dedusters are installed, in order to reclaim the dust that is produced in the system sand process on the equipment of the present invention.
Maximum contribution of the present invention and advantage are to use dry method mechanism building aggregate, and the whole production flow process does not need a water, all are to carry out fragmentation under anhydrous situation screening and classification.The raw material of its use is very extensive, can adopt various ores, as limestone, basalt, granite, also various stone materials such as available cobble, mine tailing stone.Do not need to exploit one-inch land resource, more reduced production cost, and meet the requirement of national environmental protection.
Description of drawings
Fig. 1 is production procedure of the present invention and employed device structure schematic diagram, and sequence number is represented among the figure: 1-raw material storage storehouse, 2-conveyer, 3-impurity separator, the 4-prebreaker, 5-system sand machine, 6-finished product screening machine, 7-finished product grader, 8-finished bin, 9-deduster.
Fig. 2 is the structural principle schematic diagram of finished product grader of the present invention, and sequence number is represented among the figure: 7.1-air blast, 7.2-sand block plate, 7.3-drapery panel, 7.4-graded plate, the 7.5-delivery tube of gathering materials, 7.6-air-introduced machine.
The gather materials delivery tube 7.5 of Fig. 3 for being arranged on the graded plate 7.4 of the present invention.
The specific embodiment
Followingly dry method mechanism building aggregate of the present invention is promptly made the sand stage division and equipment is described in detail with reference to accompanying drawing.
With reference to Fig. 2 and Fig. 3, the classification principle that anhydrous mechanism of the present invention is gathered materials is, the graded plate 7.4 of finished product grader 7 is arranged between air blast 7.1 and the air-introduced machine 7.6, and drapery panel 7.3 is 70-90 degree angle with graded plate 7.4 and links to each other, and the continuous angle of the best that the present invention selects is the 70-90 degree; Air blast 7.1 is arranged on the below of drapery panel 7.3, and the wind direction center of air blast 7.1 can be parallel or not parallel with graded plate 7.4.So that the sand powder that sieves from finished product screening machine 6 blows to graded plate 7.4 under the high wind of air blast 7.1, and fall in each far and near different transport pipeline 7.5 that gathers materials on being distributed to graded plate 7.4 according to the track with parabola, oblique line or straight line of varying in size of its weight and granularity, the sand powder or the sand material that will be divided into different stage then reclaim and are transported in the finished bin 8, as the building sand of different demands.
On the graded plate 7.4 each transport pipeline 7.5 that gathers materials can open or close according to the granularity rank of needed sand.As need the sand powder of large level, then open nearest pipeline; As other sand powder of the little level of needs, then open the far pipeline of some.Because of the granularity and the very not strict requirement of rank of building sand powder, therefore, its granularity and rank are normally in certain scope.Therefore, only need to adjust the air quantity of air blast or wind speed and can realize the classification purpose by simple experiment.The body of finished product grader can be designed to closed or open shown in the dotted portion of Fig. 2.
The present invention need not a water, sheerly dry method system sand in system sand process; Employed raw material can be various stone raw materials or discarded stone matter mine tailing, all can carry out the removal of non-stone matter impurity by the impurity separator of present device.Therefore, the present invention both can the conserve water resource, can accomplish twice laid to greatest extent again.
Dry method mechanism system sand stage division of the present invention is (flow process as shown in Figure 1), earlier stone raw material of all sizes is isolated the stone raw material through impurity separator 3, remove non-stone matter impurity, through prebreaker 4 the stone raw material is crushed to less than 80mm again, enter then fine crusher 5 with the raw material pulverizing of precrushing to rubble less than 25mm, also have varigrained rubbles such as thin as pulverous sand powder therebetween, these rubbles less than 25mm enter in the finished product screening machine 6 and sieve.The present invention is more practical in practice and make production process reasonable more economically for the rank of the sand powder that makes finished product grader 5 and tell, finished product screening machine 6 only is designed to allow the sand powder less than 5mm to enter in the finished product grader 7, turns back to pulverize again in the fine crusher 5 or directly reclaim as the finished product rank greater than the sandstone of 5mm again and carries out other utilization.In actual production, can certainly adjust the screen size of finished product screening machine 6 according to different demands, make the sand material that enters the finished product grader be greater than or less than 5mm.
With reference to Fig. 1, dry method mechanism building aggregate grading equipment of the present invention comprises raw material storage storehouse 1, conveyer 2, impurity separator 3, prebreaker 4, fine crusher 5, finished product screening machine 6, finished product grader 7, finished bin 8 and deduster 9; Wherein, an end of impurity separator 3 links to each other with raw material storage machine 1 by conveyer 2, and the various stone raw material of collecting is transported to the removal of carrying out non-stone raw material in the impurity separator 3; The other end is connected with prebreaker 4, carries out the precrushing less than the 80mm rubble; One end of fine crusher 5 is connected with prebreaker 4 by conveyer 2, the other end links to each other with finished product screening machine 6 by conveyer 2, finished product screening machine 6 is connecting finished product grader 7, entered and carry out classification in the finished product grader 7 and handle in finished product screening machine 6, sieve out sand powder less than 5mm less than rubble by in small, broken bits less than 25mm, finished bin 8 links to each other with impurity separator 3 and finished product grader 7 respectively by conveyer 2, the sand powder of non-stone matter impurity of separating from impurity separator 3 in order to storage and the different stage told from finished product grader 7.
With reference to Fig. 2 and Fig. 3, in finished product grader 7 of the present invention, drapery panel 7.3 is 60-100 degree angle with graded plate 7.4 and links to each other, make between drapery panel 7.3 and the graded plate 7.4 and be fan-shaped installation, air blast 7.1 is arranged on the below of drapery panel 7.3, and the blowing center position of air blast 7.1 is parallel or not parallel with graded plate 7.4.The sand powder less than 5mm that gets off from finished product screening machine 6 blows to graded plate 7.4 under the high wind of air blast 7.1, and fall on graded plate 7.4 and be distributed in each far and near different transport pipeline 7.5 that gathers materials according to the track with parabola, oblique line or straight line of varying in size of the weight of sand powder and granularity, the sand powder or the sand material that will be divided into different stage then reclaim and are transported in the finished bin 8.
Drapery panel 7.3 is fixedlyed connected with the body of finished product grader 7, above drapery panel 7.3, be provided with perpendicular sand block plate 7.2, and and drapery panel 7.3 between leave certain space, the sandstone less than 5mm that charging aperture is got off arrives orderlyly and is evenly arranged on the drapery panel 7.3, drapery panel 7.3 is provided with the three-dimensional cloth step of several triangles, with so that the sand material evenly arrange, graded plate 7.4 is provided with several transport pipelines 7.5 that gathers materials, in order to collect and to transport the sand material of different stage.The top of the graded plate 7.4 that air-introduced machine 7.6 is arranged on also joins with the body of finished product grader 7, air-introduced machine 7.6 takes and reclaims the lightest the thinnest sand powder as a kind of rank away, the sand powder of collecting according to each transport pipeline 7.5 that gathers materials is measured the size of its granularity then, thereby reaches the purpose of classification.
The present invention makes in the method for sand classification, and the air quantity of air blast and air-introduced machine can be adjusted according to the granularity that blows out at any time, with air quantity or the wind speed that reaches needed granularity.
On the graded plate 7.4 of the present invention each transport pipeline 7.5 that gathers materials can open or close according to the granularity rank of needed sand powder.As need the sand powder of large level, then open nearest pipeline; As other sand powder of the little level of needs, then open the far pipeline of some, can realize the classification purpose.
It is also harmless that drapery panel 7.3 of the present invention is designed to other shape, and as also being set to the baffle plate of concavo-convex up and down or other shape, the length of each baffle plate is adjusted according to the big I of air blast.
Dry method mechanism building aggregate of the present invention is promptly made the stone flour that sand stage division and equipment can be processed as various stone raw material 0-0.16mm, the sand powder of 0.16-5mm and the rubble of 5-25mm.Also can carry out varigrained classification according to actual needs, as 0.5-2mm, 1-3mm, 2-5mm, or ranks such as 4-8mm, 6-10mm, 11-15mm, 13-18mm, 15-20mm, 18-22mm or 20-25mm are to satisfy the different needs of construction market.
In order to reach environmental protection requirement, the present invention has also installed a plurality of dust arresters on this equipment, to reclaim the dust that is produced because of in broken and the system sand process.
The present invention has a plurality of finished bin 8, and to store the sand product of various ranks and granularity, a plurality of finished bin 8 correspond respectively to each discharging opening of the delivery tube 7.5 of gathering materials.
Device in the equipment used herein or parts are the conventional device that uses in this area except that finished product grader 7, can obtain easily on market, and its connected mode is also known by persons skilled in the art.
With reference to attached Fig. 1 and 2, select for use varigrained limestone, granite and cobble as system sandy plain material.Ingredient conveyor 2 is sent into the above-mentioned raw materials in the storage warehouse 1 and is carried out the impurity separation in the impurity separator 3, enter in the jaw formula prebreaker 4 the stone raw material precrushing that will separate then to less than the size range about 80mm, by ingredient conveyor 2 it is sent in the fine crusher 5 again and make sand, to be crushed to less than about 25mm with fine crusher 5 less than the raw material about 80mm, be transported in the finished product screening machine 6, finished product screening machine 6 sifts out less than the sand powder about 5mm and sends in the finished product grader 7; The drapery panel 7.3 of present embodiment is 85 degree angles with graded plate 7.4 and links to each other, and is 1174m with air quantity
3/ h air blast blows to the sand powder on the drapery panel 7.3 that falls into finished product grader 7, at this moment, these sand powder do not waft on the graded plate 7.4 of different distance in the same way and are scattering in each delivery tube 7.5 of gathering materials because of its granularity and weight, form the sand material of different stage, it are reclaimed respectively again.To the float stone flour of skyborne 0-0.16mm of the air-introduced machine 7.6 of finished product grader 7 tops of present embodiment is taken away and is reclaimed and becomes a rank; Reclaiming in addition has other sand powder of 0.16-5mm level, in removal process, is returned in the fine crusher 5 in finished product screening machine 6 and pulverizes or directly utilize greater than the rubble of 5mm.
With reference to attached Fig. 1 and 2, select for use varigrained basalt, mine tailing stone as system sandy plain material.Ingredient conveyor 2 is sent into the above-mentioned raw materials in the storage warehouse 1 and is carried out the impurity separation in the impurity separator 3, enter in the hammer mill 4 the stone raw material precrushing that will separate then to size range less than 80mm, by ingredient conveyor 2 it is sent in the rod milling formula system sand machine 5 again and make sand, to be crushed to less than 25mm with rod milling formula system sand machine 5 less than the raw material of 80mm, be transported in the finished product screening machine 6, finished product screening machine 6 sifts out less than the sand powder of 5mm and sends in the finished product grader 7; The drapery panel 7.3 of present embodiment is 70 degree angles with graded plate 7.4 and links to each other, and is 2504m with air quantity
3/ h air blast blows to the sand powder on the drapery panel 7.3 that falls into finished product grader 7, at this moment, these sand powder do not waft on the graded plate 7.4 of different distance in the same way and are scattering in each delivery tube 7.5 of gathering materials because of its granularity and weight, form the sand of different stage, it are reclaimed respectively again.To the float stone flour of skyborne 0-0.15mm of the air-introduced machine 7.6 of finished product grader 7 tops of present embodiment is taken away and is reclaimed and becomes a rank; Reclaim the sand powder that 0.15-2.5mm rank and 2.5-5mm are arranged in addition.In removal process, in finished product screening machine 6, be returned in the fine crusher 5 and pulverize again or directly utilize greater than the rubble of 5mm.
With reference to attached Fig. 1 and 2, select for use varigrained granite, cobble, mine tailing stone as system sandy plain material.Ingredient conveyor 2 is sent into the above-mentioned raw materials in the storage warehouse 1 and is carried out the impurity separation in the impurity separator 3, enter in the broken formula disintegrating machine 4 of counterattack the stone raw material precrushing that will separate then to less than the size range about 80mm, by ingredient conveyor 2 it is sent in the impact sand production machine 5 again and make sand, to be crushed to less than about 25mm with impact sand production machine 5 less than the raw material about 80mm, be transported in the finished product screening machine 6, finished product screening machine 6 sifts out less than the sand powder about 5mm and sends in the finished product grader 7; The drapery panel 7.3 of present embodiment is 90 degree angles with graded plate 7.4 and links to each other, and is 2100m with air quantity
3/ h air blast blows to the sand powder on the drapery panel 7.3 that falls into finished product grader 7, at this moment, these sandstones do not waft on the graded plate 7.4 of different distance in the same way and are scattering in each delivery tube 7.5 of gathering materials because of its granularity and weight, form the sand material of different stage, it are reclaimed respectively again.To the float stone flour of skyborne 0-0.13mm of the air-introduced machine of finished product grader 7 tops of present embodiment is taken away and is reclaimed and forms a rank; Reclaiming in addition has 0.13-3mm, and the stone flour of 3-5mm or sand powder in removal process, are returned in the fine crusher 5 in finished product screening machine 6 and pulverize or directly utilize greater than the rubble of 5mm.
Dry method mechanism building aggregate of the present invention promptly makes the sand stage division and equipment need not a water, sheerly dry method system sand in system sand process.Employed raw material can be various stone raw materials or discarded stone matter mine tailing, and the raw material resources comprehensive utilization ratio of this technical field is reached absolutely.Through multipole fragmentation, the stone flour of being produced, machine-processed sand, rubble can be supplied in dry-mixed mortar, commerical ready-mixed concrete is used in the production process.Stone flour more can further utilize produces environment-friendly type baking-free brick and tile, light fire-proof building materials, and various building materials compound.The present invention can require to provide each grating stone flour of 0-25mm, machine-processed sand and rubble with construction market.Thereby product is widely used, and demand is big, and especially the dry-mixed mortar project can be saved oven dry, multinomial cost such as the removal of impurity, and suitable dry-mixed mortar is to the requirement of various graded sands.
Claims (13)
1, a kind of dry method mechanism building aggregate grading method is characterized in that gathering materials and adopts omnidistance anhydrous mechanism and carry out classification, adopts stone matter ore, and its concrete steps are as follows:
The ore that will contain different stone matter carries out impurity separation, precrushing, anhydrous in small, broken bits, screening, finished product classification, and the finished product that gathers materials that will be divided into different stage at last reclaims respectively.
2, according to the described dry method mechanism building aggregate grading method of claim 1, the scope that it is characterized in that described raw material precrushing is less than 80mm.
3, according to the described dry method mechanism building aggregate grading method of claim 1, it is characterized in that anhydrous in small, broken bits be to less than 25mm with raw material pulverizing.
4, according to the described dry method mechanism building aggregate grading method of claim 1, it is characterized in that described screening is that the rock screen greater than 5mm is branched away, will carry out the finished product classification less than the sand powder of 5mm.
5,, it is characterized in that described finished product classification can be divided into the sand powder multiple other sand powder of level in the 0-5mm scope according to the described dry method mechanism building aggregate grading method of claim 1.
6,, it is characterized in that preferred sand powder rank is the stone flour of 0-0.16mm, the sand powder of 0.16-5mm according to the described dry method mechanism building aggregate grading method of claim 5.
7, a kind of dry method mechanism building aggregate grading equipment according to claim 1 comprises the raw material storage storehouse, conveyer, and prebreaker and finished bin is characterized in that comprising impurity separator, fine crusher, finished product screening machine, finished product grader; Wherein, one end of impurity separator links to each other with the raw material storage machine by conveyer, the other end is connected with prebreaker, one end of fine crusher is connected with prebreaker by conveyer, the other end links to each other with the finished product screening machine by conveyer, the finished product screening machine is connecting the finished product grader, and finished bin links to each other with impurity separator and finished product grader respectively by conveyer, in order to the sand powder of the different stage that stores the impurity separated from impurity separator and tell from the finished product grader;
Equipment gathers materials and carries out classification in mechanism under omnidistance anhydrous state, adopts stone matter ore.
8, dry method mechanism building aggregate grading equipment according to claim 7 is characterized in that being provided with air blast in the described finished product grader, sand block plate, drapery panel, graded plate, air-introduced machine; Wherein: drapery panel is 60-100 degree angle with graded plate and links to each other, the body of drapery panel and finished product grader joins, air blast is arranged on the below of drapery panel, air-introduced machine is arranged on the top of graded plate and joins with the body of finished product grader, above drapery panel, be provided with perpendicular sand block plate, and and drapery panel between leave certain space, make the sandstone that gets off from charging aperture arrive orderlyly and be evenly arranged on the drapery panel; The body of finished product grader can be closed or open.
9, dry method mechanism building aggregate grading equipment according to claim 8 is characterized in that the drapery panel angle that links to each other with the best of graded plate is the 70-90 degree.
10, dry method mechanism building aggregate grading equipment according to claim 8 is characterized in that the wind direction center of air blast is parallel with graded plate.
11, dry method mechanism building aggregate grading equipment according to claim 8 is characterized in that described graded plate is provided with several transport pipelines that gathers materials, in order to collect and to transport the sand powder of different stage.
12, dry method mechanism building aggregate grading equipment according to claim 8 is characterized in that described drapery panel is provided with the three-dimensional cloth step of several triangles, with so that the sand material arranges that evenly it is also harmless that this triangle is designed to other shape.
13, dry method mechanism building aggregate grading equipment according to claim 7 is characterized in that being equipped with on the described equipment several dedusters.
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| CN 200910087688 CN101585033B (en) | 2009-07-02 | 2009-07-02 | Dry method mechanism building aggregate grading method and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153302A (en) * | 2010-11-29 | 2011-08-17 | 湖南振兴建材科技有限公司 | Method for producing modified mechanism sand and special admixture for dry-mixed mortar |
| CN102211854A (en) * | 2011-03-17 | 2011-10-12 | 李立和 | Dry process scale continuous production process of quartz sand |
| CN102266853A (en) * | 2011-08-05 | 2011-12-07 | 葛洲坝集团第五工程有限公司 | Waste rock flour recycling method for dry sandstone producing system |
| CN106607170A (en) * | 2016-12-14 | 2017-05-03 | 中联重科股份有限公司 | Aggregate-cement co-production equipment |
| CN106807528A (en) * | 2017-01-04 | 2017-06-09 | 江苏赛日实业有限公司 | A kind of multistage dry-method sand manufacturing production line |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1272404A (en) * | 1999-04-30 | 2000-11-08 | 重庆钢铁(集团)有限责任公司 | Breaking and classifying method of material |
| CN2743767Y (en) * | 2004-07-08 | 2005-11-30 | 宣化钢铁集团有限责任公司 | Step distributing device for lime shaft kiln |
| CN100355690C (en) * | 2005-04-08 | 2007-12-19 | 苑立业 | Method and equipment for producing sand using in building by stone pit waste dregs |
| CN101050067A (en) * | 2007-03-24 | 2007-10-10 | 薛安国 | Method for picking up sand for construction in procedure of crashing limestone in use for producing cement |
| CN201036748Y (en) * | 2007-05-08 | 2008-03-19 | 重庆市大业混凝土有限公司 | Roller-type crusher |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153302A (en) * | 2010-11-29 | 2011-08-17 | 湖南振兴建材科技有限公司 | Method for producing modified mechanism sand and special admixture for dry-mixed mortar |
| CN102153302B (en) * | 2010-11-29 | 2013-01-02 | 湖南振兴建材科技有限公司 | Method for producing modified mechanism sand and special admixture for dry-mixed mortar |
| CN102211854A (en) * | 2011-03-17 | 2011-10-12 | 李立和 | Dry process scale continuous production process of quartz sand |
| CN102211854B (en) * | 2011-03-17 | 2013-07-31 | 李立和 | Dry process scale continuous production process of quartz sand |
| CN102266853A (en) * | 2011-08-05 | 2011-12-07 | 葛洲坝集团第五工程有限公司 | Waste rock flour recycling method for dry sandstone producing system |
| CN106607170A (en) * | 2016-12-14 | 2017-05-03 | 中联重科股份有限公司 | Aggregate-cement co-production equipment |
| CN106807528A (en) * | 2017-01-04 | 2017-06-09 | 江苏赛日实业有限公司 | A kind of multistage dry-method sand manufacturing production line |
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| CN101585033B (en) | 2013-07-17 |
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