KR19990073933A - Method for manufacturing sand for concrete using Masato and manufacturing apparatus therefor - Google Patents

Abstract

The present invention relates to a method for manufacturing sand for concrete using Masato and a manufacturing apparatus therefor. In recent years, the supply and demand of concrete for sand has been abundantly used, such as river sand, which is almost depleted in resources, and stone sand that has been crushed by sand or stone. However, the sea sand was not completely removed by washing, and therefore, it was difficult to mix with concrete. In the case of reinforced concrete construction, there was a problem that the strength of the structure was remarkably lowered by corrosion of the reinforcing bar.

The present invention solves these problems, and it is an object of the present invention to solve the above-mentioned problems and to provide a method for producing a granule, which is obtained by mass- The present invention is characterized in that it is characterized in that it is characterized in that it is characterized in that the granulation and shaping process, the particle size and the sludge centrifugation process, the granulation sorting process, and the manufacturing process are carried out.

According to the present invention, it is possible to mass-produce concrete sands having high quality suitable for industrial standards by using the Masato, in a cost-effective and economical manner, as well as to efficiently utilize land resources and reduce the amount of sediment of river sand, It has the effect of preserving the environment. It prevents the deterioration of concrete quality caused by the use of sea sand, and it prevents the construction of civil engineering construction, which takes up a considerable amount of the reinforced concrete method. It also prevents clay (loess) It has the advantage of being able to produce.

Description

Method for manufacturing sand for large crate using Masato and manufacturing apparatus therefor

The present invention relates to a sand making method using Masato and a sand making apparatus used in the method.

It is a well-known fact that the concrete method in civil engineering construction is most commonly used for foundation construction, construction work or finishing work.

In this concrete method, cement, sand, and gravel are used as main aggregate. In addition, sand is an important aggregate that determines the quality of concrete construction as well as concrete.

The sand used for concrete works is best suited to the size and composition of the particles in the river sand collected from the river. However, due to the many civil engineering construction works, it is necessary to collect the sand from the river, which is a resource limited by its geographical characteristics, Of the total.

For these reasons, sea sand is used as a method of supplying and replenishing sand sand. However, the sea sand is problematic in conveying in the smelting region, the washing process is difficult, the washed sand contains salt, It is possible to reduce the strength of concrete by mixing with cement when mixed with cement. Especially, in the case of reinforced concrete structure using reinforcing steel as a structure, the salt accelerates the corrosion of reinforcing steel, It is becoming a major cause.

Another method of sand supply and demand is to crush rocks and stones from mountain and land and use crushed stone as a sand aggregate. However, this method has low profitability and high productivity, The stone has a higher shrinkage rate than the river sand, and is unsuitable for concrete, and there is a problem of pollution such as noise, dust and the like during the demolition of stone and stone, and crushing operation.

The present invention relates to a method of manufacturing sand for concrete which can be replaced with river sand,

And a manufacturing apparatus used in this manufacturing method.

The sand production method provided by the present invention is a manufacturing method using Masato.

Masato has a large amount in the stratum distribution of the earth, more than 60% in the domestic stratum, so it is quantitatively sufficient and its distribution is easy to develop because it is dispersed by low hills or mountains around the geographically accessible stream .

Masato is a non-productive soil in which only 70% of sand components are present and the rest is clay, and Masatosan is cultivated only in pine trees due to difficult cultivation of agricultural products and overgrazing. So far, It was a resource.

However, among the ingredients of Masato, the sand is composed of coarse particles before depositing with the river sand, and because of the mixed mud, it can not be used as a concrete sand for natural harvesting. However, And that it can be manufactured with excellent quality sand.

It is an object of the present invention to provide a method for producing a sandstone of the above-mentioned characteristics as a sand for concrete with an inexpensive production cost.

It is still another object of the present invention to provide a sand making apparatus that performs the above-described manufacturing method.

It is still another object of the present invention to provide a method and an apparatus for producing an aggregate for an aggregate, which is a building interior material and a brick raw material together with sand by the above-mentioned manufacturing method and manufacturing apparatus.

Fig. 1 is a process chart of a method for manufacturing sand for concrete using Masato according to the present invention

Fig. 2 is a schematic diagram of an embodiment of a device for manufacturing sand for a large crate using Masato according to the present invention

Figure 3 is a side view of a first embodiment of the apparatus for manufacturing sand for concrete using Masato in accordance with the present invention.

Fig. 4 is a front view of the first granularity screening / clay cleaning device of Fig. 3

5 is a cross-sectional view of an embodiment of a particle shaping apparatus in the apparatus for manufacturing sand for concrete using a Masato of the present invention

FIG. 6 is a plan view of the particle shaping apparatus of the embodiment of FIG.

Fig. 7 is a perspective view of the crushing blade constitution of the particle shaping apparatus of the embodiment of Fig. 5

8 is a plan view of an embodiment of a particle size and mud centrifugal separating apparatus and particle size sorting apparatus among facilities of a sand making apparatus for concrete using a Masato of the present invention

Fig. 9 is a side view of the grain size centrifugal separator and grain size sorting apparatus of Fig. 8

Fig. 10 is a front view of the granularity separating apparatus and the granularity sorter according to the embodiment of Fig. 8

11 is a view showing the particle size of one embodiment of the present invention and the main constitutional sectional view of the clay centrifugal separator

12 is a sectional view taken along the line A-A in Fig.

13 is a perspective view of a screen sheet material according to an embodiment of the present invention,

14 is a partially enlarged view of the cross section in Fig. 13

Fig. 15 is a diagram showing the structure of a vibration device according to another embodiment of the structure of the particle size sorting device of the present invention

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

100: Primary particle size selection Mud cleaning device 101: Frame of sorting device

103: support bracket 104: front and rear fixing bracket 105: buffer tube

106: lateral guide plate 107: horizontal frame 108: motor fixing base

110, 115: primary and secondary screens 111: horizontal frame for supporting the primary screen

116: Horizontal frame for supporting the secondary screen 120: Vibration axis 121: Axle bracket

122: eccentric weight 124: drive motor 126: universal transmission shaft 130: high pressure cleaning pipe

200: Multi-purpose particle grinding, shaping device 210, 211, 212: Grinding tank

213: milling tank lid 214: rotating shaft rod 215: driving motor for rotating side rod

216: abrasion-resistant rubber plate 220: input port 221, 222:

223: input induction conduit 224, 225: second and third input induction conduit 226:

230a, 230b: upper and lower crushing blade groups 231: crushing blade 232: abrasion resistant rubber plate

300: Particle size and mud centrifuge of one embodiment 301: Frame

303: Storage tank 304: Connector 310: Semicircular conical centrifuge tube

311: Coating member of abrasion resistant rubber material 312: Spiral groove

315: Discharge nozzle of the conical centrifuge tube 316: Discharge induction pipe

320: cylindrical body 321: abrasion resistant coating member 322: injection tube

330: injection nozzle 331: sand pump 332:

340: rear circular plate 341: rear discharge nozzle 345: rear discharge pipe

350: abrasion resistant coating member

400: particle size sorting apparatus of one embodiment 401: particle size sorting apparatus supporting frame

404: Support plate 410: Screening enclosure 411: Outlet

413: Vibrator fixing frame 420: Screening screen

421: Unit screen plate member 422: Slit 423: Plate between slit and slit

430: vibrator 432: tubular buffer member 431:

440: variable bracket 441: variable bracket top plate

442: flange of the variable bracket side plate 443: fixing bracket of the variable bracket

445: Movable fixing ball of variable bracket

450: Fixing bracket 451: Bottom of fixed bracket

452: Sector side plate of fixed bracket 453: Fixing bracket

455: Fixing bracket moving fixture 460,461: Bolt

The method of manufacturing sand using Masato according to the present invention will be described in detail with reference to the process chart shown in Fig. 1 and the outline of the manufacturing facility of Fig.

Masato taken from Mount Masato usually has a primary gemstone screening process to select gemstones with a diameter of 10 Ø or less, sand or mud distributed, or gemstones of about 25 Ø or more, which are not suitable for intermittent crushing by a general purpose crusher.

The primary gemstone screening process is carried out by introducing the marathon collected from Mount Masato into a primary gemstone separator 20 equipped with a grid-type screen for transmitting rough gemstones of about 25 Ø or less to obtain gemstones having a size of about 25 Ø or more, , And sand, respectively.

The selected ores separated by more than 25Ø are crushed to roughly 25 Ø or less from the crusher other than the process and re-introduced into the first round gravel sorting machine (20). The ores, And then supplied to the raw stone sorting machine 30 to perform a secondary raw stone sorting process.

The secondary gemstone sorting process is a process of sorting and transporting the selected and sorted gemstones in the primary gemstone sorting process by the secondary gemstone sorting device 30 and crushing them smaller.

The raw stones, mud and sand selected by the selection screen to a size of about 8 Ø or less are transported to the primary particle sorting and mud washing apparatus 100, and the filtered stones of 8 Ø or more are transported to the primary crusher 40, And is then pulverized to a diameter of about 8 Ø or less, and the primary particle size is sorted and transferred to the mud washing apparatus 100 to perform the primary particle size sorting and the mud washing process.

In the primary particle size sorting and mud washing process, raw stones of about 8 Ø or less, sand, clay, and the like, which are transferred from the secondary raw stone separator 30, are charged into the mud washing device 100, Sand and mud of the size of approximately 8 Ø or less are firstly transmitted through the upper screen and then transmitted through the lower screen to receive the roughly 5Ø or less Sand, and mud with water together with water to separate the raw stones and the clay on the outside of the sand.

In this process, the rough stones of about 5Ø or more, which have been filtered at each of the upper and lower screens, are collected and transported to the secondary crusher 50, finely crushed to a size of about 5Ø or less, (100) and re-screened.

The primary roughness of roughly 5 Ø or less, which is separated from the mud washing apparatus 100 by washing the outer surface of the mud, is mixed with water together with fine sand particles and clay, Is supplied to the pulverizing and shaping apparatus 200, and is processed into a particle pulverizing and shaping process.

In the particle milling and shaping process, a mixture of raw stone, fine sand, clay, etc., of about 5Ø or less supplied together with water is passed through several particle grinding mills in a yearly manner, It is a process of completely separating and removing the clay from the sand particles by forcibly crushing the internally cracked particles in the following gemstones, shaping the sand particles stably and discontinuously, and finely adhering to the cracks,

The shaping and the mud of the surface or the cracked portion are washed by the particle crushing and shaping apparatus 200, and the separated sand particles are mixed with water together with the separated clay and stored in the storage tank 303 for transportation.

The mixture of sand particles, clay and water stored in the storage tank 303 is injected into the particle size and clay centrifugal separator 300 at a constant amount through the sand pump 331 at a constant amount per unit time and subjected to particle size and clay centrifugation processes do.

When sand particles, clay and water mixture are injected into the particle size and clay centrifugal separator 300 with a predetermined pressure per unit time by the sand pump 331, they are passed through the conical centrifuge tube with a centrifugal force.

In this process, coarse sand particles with a large specific gravity are distributed to the inner wall side of the conical centrifuge tube in the mixture, and the fine grained sand particles and clay having a specific gravity are gradually discharged from the conical centrifuge tube While being distributed in the vicinity of the central axis.

In this operating state, when the injection amount per unit time is adjusted to a certain amount larger than the discharge amount per unit time of the centrifugal tube, the coarse sand particles distributed in the inner wall side of the conical centrifugal tube by centrifugal force, Discharged to the discharge port side, is input to the particle size sorting device 400,

At the same time, a discharge load corresponding to the surplus injection amount is formed at the discharge port side center shaft portion of the centrifugal separator, and backward flow phenomenon occurs to the rear side. As a result, fine particles of fine particles scattered around the central axis of the centrifugal separator And mud are backwashed together with water, separated and discharged into a settling tank 60 through a separate discharge pipe installed at the rear of the centrifugal separator, and then subjected to separate dehydration and compression processes to produce clay soil.

In such granular and sludge centrifugal separation processes, the granular component discharged is adjusted to a proper standard by adjusting the unit time discharge amount and the injection amount.

According to the above process, only coarse sand particles having a relatively large specific gravity are separated together with low-concentration muddy water. The mixture having passed through the particle size and sludge centrifuge apparatus 300 is subjected to a particle size sorting process The final sand is selected as concrete for concrete.

In the particle size sorting process, slits having a predetermined width and length that allow the minimum size particles to be sorted and removed are formed on the entire surface at regular intervals, and a rectangular screen having a long rectangular shape in the longitudinal direction is freely installed on the frame, The particle size selecting device 400 is provided with a vibrating device which is formed at a predetermined angle higher than the inlet port side and gives a vibration force to the inlet port side.

The granular sorting screen is selectively discharged from the discharge port side of the particle size and clay centrifugal separator 300 on the upper side of the rear side (inlet side) of the granularity sorting screen in a state in which the granular sorting screen is vertically vibrated by an appropriate vibrating force, When a mixture of large coarse sand particles and a low concentration of mud water is introduced,

By the vibration of the screen for screening the particle size, the muddy water of a low concentration is immediately discharged downward through the slit, and the sand particles are gradually moved toward the forward discharge port by the oscillating force in the traveling direction.

When the sand particles are moved from the back to the front discharge port side on the vibrating particle screen screen, the sand particles below the width of the slit are transmitted downward, and together with the low concentration mud water drained firstly, The sand particles larger than the width standard of the slit are advanced and discharged to the discharge port formed at the front end side of the screen, and the particle sorting process is performed.

The sand component finally produced in such a particle size selection process is determined by the slit size of the particle size selection screen, the vibration power of the particle size selection screen, the particle size, and the amount of input from the centrifugal separator.

The optimum size of sand for concrete should be within the range of 5-0.15mm in terms of particle size and the passing ratio of 0.08mm sieve of standard net in physical properties should be below 7.0% The slit size of the screen for screening the size of the screen in the screening process for obtaining concrete specimens in order to obtain an appropriate standard sand composition is required to be in the range of 25 to 65%, 0.3 to 10 to 35% and 0.15 to 2 to 16% Particle sorting screen The vibratory force and particle size of the screen and the input from the centrifugal separator should be relatively controlled.

In the manufacturing method of the present invention, in order to perform the particle size sorting process using the particle size sorting screen, the preferential condition is that the slit size of the screen is fixed to an appropriate standard, To adjust the sand content ratio to the appropriate standard. In order to obtain the sand component having the above-mentioned appropriate standard size, it is advantageous to remove particles of about 0.8 or less in the screen for screening the particle size screening as much as possible. Therefore, it is preferable that the slit size of the screen for sorting the size screen is a size that can be transmitted by the vibrating force of the particles of about 0.8 Ø or less and is formed into a shape having a long length in a direction orthogonal to the proceeding direction of the sand,

When the particle screen screen is made of urethane resin and abrasion resistant and stretchable material is used, the plate material between the slit and the slit is oscillated in the forward and backward direction by the vibrating force of the screen for sorting screen, and the slit width is formed to be variable in elasticity, The clogging phenomenon can be effectively prevented.

According to this series of processes, it is possible to produce sand of suitable standard suitable for use as sand for concrete mixing using Masato taken from stone as a raw material in Masatosan, and also to produce clay for building interior and brick incidentally will be.

The method of manufacturing sand using Masato according to the present invention is performed through several steps, and several processes such as first and second gemstone selection process, first and second order crushing process, and precipitation process, Although it is sufficiently performed by a known apparatus used in the apparatus for producing used stones, most processes of the remaining steps must be performed by a new apparatus.

The manufacturing apparatus provided in the present invention is several independent manufacturing apparatuses for effectively performing the above manufacturing method.

The first manufacturing apparatus is capable of performing the primary particle size screening and mud washing process

It is a primary particle size sorting and mud washing device.

Since the ore collected from Mount Masato has various sizes and the clay is firmly adhered to the surface and the cracks, the ore having a diameter of 8 Ø or less is sorted through the first and second sorting devices 30, When crushed by a single crushing step, the size of crushed particles is irregular in accordance with the performance and efficiency of a conventional crusher, which is unsuitable for use as sand for concrete.

Therefore, it is necessary to perform the re-crushing operation when the crushed ores having a size smaller than the proper size are crushed by the secondary crushing process. The primary crushing screening and the mud washing device are crushed to about 8Ø or less in the secondary crusher 50 The raw materials of stone, mud and sand are supplied together with water to first select roughly 8 Ø or less from the raw stones, secondly to select less than 5 Ø, and at the same time, the clay attached to the surface of the raw stones is firstly treated with 5Ø high- Is a device that is disclosed for cleaning.

This primary particle size screening and mud washing device is composed of a frame made up of rectangular oblong bodies having upper and lower chambers opened and having a guide plate of a certain height horizontally and a frame having a predetermined depth in the inside of the frame, A secondary screen having a primary screen having a through hole of a standard and a through hole of a smaller standard supported by the horizontal frames and a high pressure washing water An upper and a lower discharge port each formed by opening a lower frame of the first and second screens and a transverse frame fixed between the right and left guide plates at one side of the upper and left sides of the left and right guide plates, And a hopper installed to collect the permeate of the secondary screen from the lower side, and a mud washing enclosure is formed, By the right and left front and rear outer end of the star, the mud cleaning housing in the tubular front suspension is lower rear is formed in a configuration for supporting a certain elasticity in the fore-and-aft guide high.

3-5 illustrate an embodiment of the primary particle size screening and mud cleaning apparatus described above.

Reference numeral 100 denotes a frame for the entire primary particle size screening and mud washing apparatus. Reference numeral 101 denotes a frame of a sorting apparatus which is formed into a rectangular oblong body in the longitudinal direction and has a high inlet port side and a low discharge port side inclined at a constant angle. And support brackets for rotatably supporting the support shaft fixed to both front and rear ends of the frame by a bearing member.

The support brackets 103 are supported by the front and rear fixing tables 104 fixed to the ground or the like from outside the left and right ends of the frame by several buffer tubes 105, It is pivotally supported on a fixed table and supported with elasticity.

In the interior of the wide frame 101, first and second screens 110 and 115 installed at predetermined intervals and inclined downward are provided.

The primary screen 110 on the upper side is fixedly supported by a plurality of horizontal frames 111 by means of a lattice network through which a rough stone of approximately 8 Ø can be passed.

The lower secondary screen 115 has a structure in which dozens of abrasion-resistant urethane resin unit sheet nets are detachably mounted on a plurality of horizontal frames 116, each having a 5-mm hole formed at intervals of 5 mm.

At the right and left ends of the primary screen 110, a frame 101 and right and left guide plates 106 are formed as elongated members. Below the secondary screen 115, a screen 101 is extended to the lower end of the frame 101, And a hopper 117 for collecting the raw stones, mud and washing water that have passed through and conveying them to the pulverizing and shaping apparatus.

Two transverse vibrating shafts 120 are rotatably disposed at the upper end of the middle portion of the right and left guide plates 106 by transverse brackets 121 having bearings in the transverse frame 107, 120 are mounted on both sides of the left and right sides of the eccentric weight 122. Each of the vibration sides 120 is connected to a driving motor 124 provided on a fixed base 108 at one end of the frame 101, 126).

A high-pressure cleaning pipe 130 having a plurality of spray nozzles is formed in a row on the upper side of the primary screen 110.

In the above-described construction, the inclination angle of the frame 101 is fixed at an arbitrary angle according to the gemstone component of the marble, but it is preferably formed at about 10-20 degrees,

It is preferable that the buffering tubes 105 which are buffering members of the frame 101 are of the known air injection type and that the material of the secondary screen is formed of a urethane resin having a Shore hardness of about 100-120 to satisfy both the shrinking property and the durability of the hole .

The action and effect of the primary particle size screening and mud cleaning device having the above-described structure are as follows.

When the driving motor 124 is operated, the primary particle size screening / mud washing device having the above-described structure is operated to rotate the vibrating shafts 120 interlocked by the driving motor shaft and the universal driving shaft 126

.

When the transmission shafts 120 are rotated, the eccentric weight 122 pivoted to the left and right ends of the transmission shafts 120 are also rotated to vibrate (oscillate) the transmission shafts 120 with rotary eccentric force.

When the electric shafts 120 are vibrated, the electric shafts are fixed to the axle brackets 121

A vibration force is transmitted to the frame 101 having the right and left ends and the four fixing brackets 103

The whole of the frame 101, which is supported by the buffer tubes 105 in a freely pivotable manner on the front and rear fixing legs 104, is vibrated.

In the vibration state of the frame 101, water is supplied to the high-pressure cleaning pipe 130, which is disposed in the horizontal direction above the primary screen, to spray the high-pressure cleaning water onto the upper surface of the primary screen 110 with several injection nozzles If you do, it will be in the initial state of operation.

As described in the above-mentioned manufacturing method in the initial operation state, the raw stones collected from the Masato mountains are passed through the primary and secondary sorting machines 30 and the primary and secondary crushers 50, (Mud, sand, etc.) is continuously fed to the upper end (input port) side of the frame 101 by the conveying conveyor, the inserted ore is first downwardly inclined down to the vibration state on the upper surface of the primary screen 110 Sand, mud or the like of about 8 Ø or less is discharged through the screen and discharged onto the secondary screen 115 by the washing water sprayed with the vibration power and the self weight and high pressure, 101) and then re-supplied to the secondary crusher (50) again by the conveying conveyor.

The raw ore, sand, mud, etc., having passed through the primary screen (110)

The raw stones, sand, mud, etc. of about 5 Ø or less are again permeated by water (115)

The raw stones, which have not been transmitted, are conveyed downward by the upper surface of the secondary screen 115 to be conveyed by the lower part of the frame 101 And is again supplied to the secondary crusher 50 by the conveying conveyor.

The primary particle size screening and mud cleaning apparatus having the above-described structure and operating state is a one-screen screen having roughly 8 Ø and 5 Ø transmission holes, and by selecting the size of the raw stones in two stages, The primary and secondary crushers 50 can be effectively crushed to a diameter of 8 or less even by using a low capacity as a ready-made product,

The frame 101 of the sorting apparatus is supported on the front and rear fixing rods 104 by the buffer tubes 105 having excellent elasticity so that the vibrating shaft 120, the eccentric weight 122, and the driving motor 124 can be effectively vibrated even when the standard of small capacity is formed,

The selection process is carried out by the vibration power and the high pressure washing water, so that the sorting efficiency is increased, the mud attached to the surface of the rough stone is effectively separated first, and the separated mud is collected without air in the air. And,

The secondary screen is formed of a urethane resin having a shore hardness of about 100-120 having a certain water content at the time of contact with moisture so that the hole is repeatedly expanded and contracted in four directions by the vibration force during the sorting operation and is irregular It has features that prevent the phenomenon that the gouged stone is caught in the hole when passing through the secondary screen network.

The transmission means between the oscillation shafts 120 as vibrators and the drive motors 124 for driving the eccentric weights 122 in the constitution of the oscillation means of the primary particle size screening and dirt cleaning apparatus 100 is composed of a universal transmission shaft 126 is used, the frame 101 maintains a smooth running state due to the characteristics of the universal transmission shaft 126 even when the frame 101 swings in an arbitrary angle and direction, thereby improving the transmission efficiency and preventing breakage of the electric motor and the bearing member .

The configuration of the primary and secondary screens and the structure of the vibrating means in the construction of the primary particle size screening / dirt cleaning device are not necessarily limited to those illustrated in the drawings.

For example, the size of the through hole formed on the first and second screens can be changed to an appropriate standard according to the crushing standard and the efficiency of the first and second crushers, and the quantity of the buffer member can be increased. The shaft driving means, the transmission means, the vibration means, and the like can be constituted by other types of vibrating means such as a vibrator having an effect of increasing or decreasing in an arbitrary standard or quantity depending on the processing capacity of the sorting apparatus, or vibrating the frame .

The second manufacturing apparatus of the sand making apparatus using Masato is provided in the present invention is a particle crushing and shaping apparatus for performing the particle grinding and shaping process in the above manufacturing method.

The ore selected through the primary particle size screening and mud washing device has a particle size of about 5Ø or less and the mud adhered to the surface is firstly separated. However, in the ideal condition, the ore is adhered to a cracked state It is in a state of low stabilities because it is in progress and the clay part contains clay (clay) in a ratio unsuitable for use as sand for concrete mixing.

Therefore, rough stones of roughly 5Ø or less through the second sorting device are used for separating cracked materials to produce concrete sand, and forcibly breaking crushed stones to enhance stability, while securing the mud contained in the outer surface or cracked part And a process of pulverizing the pulverized product so as to uniformly shape the outer shape of the particles is required, and the pulverizing and shaping device is a device which is started by performing such a process.

The particle crushing and shaping device has an opening and closing lid, an abrasion resistant coating member attached to the entire inner wall, a discharge port at the upper end of one side and a discharge port at the opposite end, a charging induction path extending from the discharge port to the inner bottom, A driving motor interlocked with the upper end of the rotary shaft at the upper end of the lid by rotating the rotary shaft rod; And a plurality of milling blades that are radially attached at various stages from the lower end of the rotary shaft rod.

In this case, the discharge port of the first crushing tank is connected to the inlet of the second crushing tank in a hermetically-sealed manner. In this case, several unit crushing vessels The grinding tank may be connected in series.

FIGS. 5-7 illustrate a multiple particle type pulverizing and shaping apparatus which is one embodiment of the particle grinding and shaping apparatus described above.

Reference numeral 210 denotes a grinding chamber, reference numeral 213 denotes a lid of the grinding chambers, reference numeral 214 denotes a rotating shaft rod, reference numeral 215 denotes a driving motor for rotating the rotating shaft, reference numeral 230 denotes a driving motor, And the whole of the crushing blade attached to the rotary shaft rod.

An inlet 220 connected to the hopper 117 of the secondary sorting apparatus 100 through a transfer pipe is formed at an upper end of the primary grinding tank 210, And a second inlet 221 connected to the second mill 210 is formed on the opposite side of the inlet 220. The second inlet 221 The second pulverizing tank 211 is extended from the second pulverizing tank 211 to form a second feed introduction conduit 224 formed on the inner wall of the second grinding tank 211 at a predetermined length at the lower end thereof. A third charging inlet conduit 222 is formed and a third charging inlet conduit 225 is formed in the inner wall of the tertiary grinding tank 211 to extend from the third charging inlet 222 to a predetermined length at the lower end, And a discharge port 226 connected to the particle size separator through a transfer pipe is formed on the opposite side of the discharge port 222.

On the other hand, the entire inner wall of each of the crushing vessels is coated with an abrasion-resistant rubber plate 216, which is a separate member.

The crushing blades 230 attached to the rotating shaft rods are divided into a lower crushing blade group 230a provided at a position slightly higher than the lower ends of the input induction pipes 223, 224, 225 provided in the crushing chambers, And a plurality of upper grinding blade groups 230b which are installed somewhat higher than the upper grinding blade groups 230b.

Each of several unit crushing blades 231 forming the upper and lower crushing blade groups 230a and 230b is a steel plate member having a predetermined length and width and is radially arranged around the rotation axis bar, And the abrasion-resistant rubber plate 232 is detachably attached to each of the crushing blades 231.

The configuration in which the respective crushing blades 231 are attached to the opposite ends of the rotary shaft at a predetermined angle may be formed by alternately turning the unit crushing blades 231 in the upper and lower crushing blade groups in an alternate manner .

This configuration is considered in order to increase the effect of pulverization and shaping while simultaneously rotating the mixture of sand and mud into water in the pulverizing tank in a rising vortex state.

The action and effect of the particle pulverizing and shaping apparatus having such a configuration are as follows.

The particle pulverizing and shaping apparatus having the above-described constitution is the above-described primary particle size sorting. And is installed on the lower side of the mud washing apparatus and is operated by applying power to the driving motors 215 provided in the three grinding tanks 210, 211 and 212.

In the state where the rotary shaft rods 214 are rotated at a constant rotation speed by the driving of the driving motors 215, sand and mud of about 5 Ø or less selected by the primary particle size screening / mud washing device are mixed with water Collected in the hopper 117 in the state of the first mill

And is continuously supplied to the inlet port 220 side with a predetermined pressure, it is first filled in the first milling vessel 210 and then discharged to the side of the second inlet port 221 to be supplied to the second milling vessel 224 through the second inlet introduction channel 224, And then discharged to the discharge port 226 through the third input introduction conduit 225 to the third milling vessel 212 through the third inlet 222 when the second milling vessel 211 is full. The raw stones of about 5Ø or less, which are mixed in the muddy water while the three, first and second mills are fed under the supply pressure from the first inlet 220 side, And is crushed and shaped by the upper and lower crushing blade groups 230a and 230b rotating in the tank.

In other words, the rough stones of about 5Ø or less are crushed by colliding with the upper and lower crushing blade groups 230a and 230b which rotate while the respective crushing troughs are passing through the respective crushing troughs, and at the same time, It is hit by the rubber plate 216 on the inner wall of the tank and is irregularly vortexed and shaped and crushed.

The shaping and crushing action of the ores by the upper and lower crushing blade groups 230a and 230b and the inner wall of the polygonal crushing tank separates the pieces that were stuck in the crushed stones, It has the effect of improving the stability of the particles and lowering the content of the mud by easily separating the clay that is sandwiched by the cracks.

In the construction of the above-described embodiment, the drive motors provided in the first, second and third mills are variable in speed that can independently control the number of revolutions. In the first and second mills, When the number of revolutions of the rods is gradually lowered, the crushing strengths in the respective crushing vessels are gradually different from each other, so that the crushing efficiency can be increased by controlling the shaping condition and the crushing strength while passing through the third crushing tank However, it is possible to obtain crushing strength suitable for the kind and distribution component of the marble ore.

In addition, since the inner wall of the grinding tank is coated with a rubber plate material, the particles repelled by the grinding blade toward the inner wall are shaped by friction with the rubber plate and the elastic surface

There is also an action effect that an active crushing operation is performed by being fried.

The third manufacturing apparatus of the sand making apparatus using Masato provided in the present invention is a granular and clay centrifugal separating apparatus for performing the granularity and the sludge centrifugal separation process among the above production methods.

The ore passing through the granular crushing apparatus is in a state where its particle size is mostly shaped and crushed to 5Ø or less and the clay adhering to the surface and internal cracks are almost removed and separated. And discharged in a mixed state.

Therefore, in the next step, it is necessary to separate crushed and shaped sand and clay to the proper size and to separate them at the appropriate rate to meet the profitability.

In the method of separating sand and mud from water mixed with sand and mud, sand and water of a certain particle size and less than a certain particle size are passed through using a difference in particle size between sand and clay, Screen). However, in order to separate the granules and the mud and water in accordance with the capacity discharged at a high speed in the above-described particle crushing and shaping apparatus by the permeation method using a net, the apparatus must be very large As a matter of course, since the drive unit must use a large capacity, it is impractical from the viewpoint of productivity and economy.

The granular and sludge centrifugal separator disclosed in the present invention solves the above-mentioned disadvantages, and by the centrifugal separator, it is possible to rapidly and efficiently supply sand particles of an appropriate size for concrete, It is characterized by separation.

The constitution of the particle size and mud centrifuge apparatus disclosed in the present invention,

A semi-conical centrifuge tube having a small diameter on the discharge port side and a large diameter on the injection port side and having a longer length ratio than the bottom surface, a cylindrical discharge nozzle removably mounted on the discharge port side of the centrifuge tube, An injection nozzle eccentrically attached in a direction orthogonal to the central axis of the body at a rear end of the body, an injection nozzle detachably connected to the injection tube, and the above-described particle grinding, A sand pump for lifting a sand and clay mixture discharged with water from the apparatus to a predetermined pressure, a lower end connected detachably to the upper end of the sand pump, and an upper end detachably connected to the injection pipe, An injection transfer pipe for transferring the sand and the clay mixture to the injection pipe, and a rear circular disk which is removably adhered to close the rear end of the body, A rear discharge nozzle having a predetermined diameter at a central portion of the rear circular plate and protruding and fixed to the inner side for a predetermined length and fixed to the rear discharge pipe and a rear discharge pipe having a flange portion for detachably fixing the rear circular plate to the rear end of the body .

The particle size and the sludge centrifuge of the above-described construction will be described in detail with reference to the constitution of one embodiment shown in Figs. 8 to 12 as follows.

Reference numeral 300 refers to the particle size and mud centrifuge of the embodiment in its entirety.

Reference numeral 310 denotes a conical centrifuge tube, 315 denotes a discharge nozzle of a conical centrifuge tube, 301 denotes a frame for supporting the particle size and the mud centrifuge 300, 316 denotes a discharge It is a guide tube.

Reference numeral 311 denotes a conical centrifuge tube (310)

A wear resistant coating member made of a rubber synthetic material having a predetermined thickness is formed with a spiral groove 312 having a certain depth and width on the inner wall side thereof.

Reference numeral 320 denotes a cylindrical body which is detachably assembled to the rear end of the conical centrifuge tube 310. An injection pipe 322 formed to be eccentrically formed in a direction orthogonal to the central axis of the body is integrally formed at a rear end of the cylindrical body, The wear resistant coating member 321 of the resin and the rubber synthetic material having a predetermined thickness is closely attached.

Reference numeral 330 denotes an injection nozzle which is detachably assembled to the inlet side of the injection pipe 322. At the lower end of the injection nozzle 330, a sand and clay mixture, which is discharged together with water from the particle crushing and shaping apparatus 200, A lower end connected detachably to the upper end of the sand pump 331 and a lower end connected to the injection nozzle 330 in a detachable manner so as to be sanded with water by the sand pump 331, And an injection transfer pipe 332 for transferring the mud mixture to the injection pipe 322 is connected.

And a rear discharge nozzle 341 having a predetermined diameter at a central portion of the rear circular plate 340 and fixedly attached to the inside of the rear circular plate 340 by being protruded by a predetermined length is installed at a rear end of the body 320, And a rear discharge pipe 345 having a flange portion for detachably fixing the rear circular plate to the rear end of the body 320 is installed at the rear of the rear circular plate 340.

A synthetic resin abrasion resistant coating agent 350 having a predetermined thickness is formed on the inner walls of the discharge nozzle 315, the discharge induction pipe 316, the rear circular plate 341, the rear discharge pipe 345 and the injection transfer pipes 332 They are molded into independent members and assembled in a close contact manner.

The apparatus of the embodiment shown in FIG. 8-9 has a configuration in which a parallel type conical centrifugal separator is provided together with the particle size sorting apparatus 400 described later, and reference numeral 303 denotes a particle crushing and shaping apparatus 200 And 304 is a connection pipe connecting the hopper 117 of the particle crushing and shaping apparatus 200 and the reference numeral 401 is a connection pipe connecting the particle size and the sludge centrifuge apparatus 300 And a frame for supporting the particle size sorting apparatus 400.

The granularity and mud centrifuge 300 of this embodiment performs the granulation and mud separation process as follows.

When the sand particles finally separated by the above-described particle crushing and shaping apparatus 200 and the mud separated from the sand particles are discharged as a mixture with water, the injection is transported and stored in the storage tank 303 through the pipeline 304 .

When the sand pump 331 connected to the lower end of the storage tank 303 is operated, a mixture of sand, mud and water, which is stored in the storage tank 303, is supplied to the respective injection nozzles 330 and an injection tube 322 to the torso 320 of each conical centrifuge tube at a constant pressure.

At this time, the injection pipe 322 for injecting the mixture of sand, mud and water into the inside of the body 320 is eccentrically attached at one end of the rear side of the body 320 in the direction orthogonal to the central axis of the body, The mixture of sand, clay and water is injected eccentrically into one side of the inner wall of the body 32 and injected while rotating on the inner wall of the cylindrical body 320.

The rotary injection operation is continuously carried out by a mixture of sand, mud, and water continuously injected through the injection tube 322, and is gradually transferred to the discharge nozzle 315 side with the centrifugal force on the inner wall of the conical centrifuge tube 310 And discharged.

At this time, when the mixture of sand, clay and water reaches the rear side of the conical centrifuge tube 310 at the side of the body 320 while rotating with centrifugal force, the coating member The thrust in the advancing direction is doubled by the helical groove 312 of the discharge nozzle 311 and discharged toward the discharge nozzle 315 while rotating.

According to this operation, the coarse sand particles having a large specific gravity in the mixture are distributed to the inner wall side of the conical centrifuge tube 310 by the centrifugal force, and are rotated and discharged. The fine sand particles and the clay having a specific gravity, Gradually distributes in the direction of the central axis of the conical centrifuge tube, and rotates and discharges.

As the diameter of the discharge nozzle 315 is adjusted in the discharge process in which such action is performed, the discharge amount per unit time can be made smaller than the unit time injection amount injected into the injection pipe 322 side. As a result, A predetermined discharge load is formed in the conical centrifuge tube 31. The discharge load acts on the central axis of the distal end portion (discharge port side) of the conical centrifuge tube to the rear side, and the specific gravity which is rotated and discharged in the vicinity of the central axis line is light Sand particles and mud move back together with water.

The backflow operations are continuously generated as a mixture of sand, mud, and water is continuously injected from the injection pipe 322 side. The surplus injection amount is formed as countercurrent with respect to the discharge amount per unit time, and the conical centrifuge tube 310, And is discharged to the rear discharge nozzle 341 located at the rear center of the body 320 and is then transferred to the mud sink trough through the rear discharge pipe 345. [

On the other hand, coarse sand particles having a relatively large specific gravity, which are rotated and discharged on the inner wall of the conical centrifuge tube 310 by centrifugal force, partly rides on the inner wall of the coating member 311,

And is discharged along with the water to the discharge nozzle 315 side without being influenced by the countercurrent action and is discharged to the discharge induction pipe 316 without being influenced by the countercurrent action, And is input to the particle size sorting apparatus 400 described later.

The discharge nozzle 315 and the injection nozzle 330 are detachably attached to the conical centrifuge tube in such a particle size and sludge centrifuge apparatus. The diameters of the discharge nozzle 315 and the injection nozzle 330 are increased or decreased according to the particle separation efficiency (particle distribution) The particle size separation efficiency can be obtained. As described above, the particle size and the sludge centrifugal separator according to the present invention are characterized in that the particle size of the particles is reduced to 5 or less by the above-described particle size grinding apparatus, and the sand particles, The present invention has the advantage that productivity and economical efficiency can be remarkably increased because the effect of separating the suitable raw stones suitable for concrete for concrete from the mixture quickly and effectively in the mixed mixture with water is obtained.

The composition of the granular and mud centrifuge disclosed in the present invention is not limited to the above embodiment.

For example, the size and shape of the conical centrifuge tube, the installation angle, and the installation water volume can be changed to any shape or standard according to the processing capacity, and the centrifugal centrifuge tube or other sand- The wear-resistant coating member is constructed by preventing the apparatus main body from being damaged by friction with the sand particles. In order to have wear resistance, the wear-resistant coating member may be formed by thermally fusing and cording to each friction expected portion with an abrasion- However, it is preferable to use an interchangeable structure for water retention after prolonged use, and a smooth centrifugal effect can be obtained even by smoothly treating the inner wall of the coating member. However, the structure of the helical groove, It is possible to multiply the thrust at which the discharged material is discharged in the advancing direction, The foamable rubber heavy coarse sand particles is highly desirable in terms of effective separation, even with wear on the material of the wear-resistant coating or member, it is possible to even the like or a urethane and the synthetic resin, an alloy steel.

The fourth apparatus for producing a sand production apparatus using Masato provided in the present invention is a grain size sorting apparatus for performing the grain size sorting process among the above-described manufacturing methods.

According to the particle size and the sludge centrifuge described above, most of the sand particles are selected in an appropriate size, but due to the characteristics of the centrifugal separator, the sand of fine particles and the mud water of low concentration are mixed and discharged.

Therefore, in order to obtain an appropriate sized sand component, it is necessary to separate the sand particles of the appropriate size from the sand particles of the appropriate size, and to select and separate the sand particles having low concentration and the particle size selection process. Shall be of such a construction as to ensure the efficiency of titration at an appropriate rate in accordance with the capacity of the granulation and sludge centrifuge for profitability.

The particle size sorting apparatus disclosed in the present invention is capable of quickly and efficiently selecting fine particles of concrete for concrete by thoroughly removing fine particles of sand and low-concentration mud from a mixture discharged from the particle size and sludge centrifuge described above .

In the particle size sorting apparatus of the present invention,

And a rectangular screen screen enclosure which is long in the longitudinal direction and is openable in the longitudinal direction so as to receive a mixture of the sand and the muddy water. The front end side of the screen enclosure is opened to form a discharge port, Side

And the screen is formed with a slit of a predetermined size continuously formed in the inside of the enclosure in parallel and fixed at the same height as the height of the discharge port at the front end,

The screen screen housing is provided with a vibrating device fixed to the upper portion of one side of the screen housing so as to freely support vibrations freely by the plurality of tubular buffer members on the support frame in such a manner that the discharge screen side of the screen screen housing is high and the rear end side thereof is inclined at a low angle, And a support plate for receiving the permeate from the screen screen is provided below the screen enclosure.

The particle size sorting apparatus having the above-described configuration will be described in detail with reference to the configuration of one embodiment shown in Figs. 8-10 and 13-15.

Reference numeral 400 denotes the entire particle size sorting apparatus of one embodiment.

Reference numeral 410 denotes a screen screen enclosure which is long in the longitudinal direction and is opened upward so as to be able to receive a mixture of sand and mud water, which is located below the discharge induction pipe 316 of the particle size and mud centrifuge apparatus 300 described above.

The screen enclosure 410 is formed with a discharge port 411 at its tip end and a water collecting container at its three end closed at its rear end.

As shown in Figs. 8 and 13-14, a unit screen sheet material 421, in which a slit 422 having a certain standard length and which is long in the transverse direction is formed over a series of heat, is formed on a urethane resin sheet of a certain area, The sorting screen 420 is fixedly installed at the same height as the height of the discharge port 411,

Two vibrators 430 are fixed on the upper surface of the fixed frame 413 fixed across the left and right side plates of the enclosure in the middle of the screening enclosure 410 and the lower ends of the vibrating plates 430 are inclined toward the discharge port 411.

The screen screen housing 410 is vibratably supported by the support frame 401 with a plurality of tubular buffer members 432 so that the discharge screen 411 side is high and the rear end side thereof is inclined at a low angle with a certain angle. A receiving plate 404 for receiving the permeate from the sorting screen 420 and transferring the permeated to the storage tank 303 is provided.

The particle size selecting screen device 400 having the above-described structure performs the particle size sorting process as follows.

The screen selecting apparatus 400 may be configured such that the entire screen enclosure 410 is supported by the support frame 401 in a vibration-free manner by a plurality of tubular buffering members 432, The entire screen enclosure 410 is vibrated in the forward direction by the installation direction of the vibrator 430. In this case,

In this state of vibration, the granulated sand particles mixed in the low concentration mud water in the discharge induction pipe 316 of the particle size and mud centrifuge apparatus 300 located above the rear side of the particle size selection screen apparatus 400 And is discharged onto the upper surface of the rear end of the screen 420.

The sand particles mixed with the low concentration mud water put on the rear upper surface of the screening screen 420 are separated by the vibration of the screen screen 420 vibrating in the same manner as the vibration of the screen enclosure 410, The sand particles are immediately discharged downward through the slits 422 and joined to the storage tank 303 via the support plate 432,

The coarse sand particles are sorted by the slits 422 while being moved on the screen 420 toward the forward discharge port 411 side gradually by the oscillating force in the advancing direction of the screening screen 420.

In the sorting operation, the slits 422 formed on the urethane resin screening screen 420 receive the same vibration force as the vibrating force of the screening screen 420, so that the plate materials 423 between the slits and the slits vibrate in the front- The width is changed with elasticity so that even if a large particle is temporarily sandwiched by the slit width, the slit width is expanded and contracted by the continued vibration force, and the sand particles sandwiched are effectively transmitted downward, thereby preventing clogging of the slits .

The particle sorting operation by the screening screen 420 as described above is performed by the size of the slit 422, the vibrating force acting angle (installation angle) of the vibrator 430 for vibrating the screening screen 420, And the amount of charge from the battery 300,

When the slit 422 is formed to have a narrow width and a short length, it is preferable that the sand component selected to the discharge port 411 side If the slit 422 is formed to have a wide width and a long length, the content of fine sand in the sand component selected at the discharge port 411 side is lowered.

Further, as the installation angle of the vibrator 430 is formed at a small acute angle with respect to the upper surface of the screen 420, the vibration width in the advancing direction of the screen 420 is widened. The amount of sand produced per unit time is increased and the transmittance of fine particles by the slits 422 per unit time is lowered so that the amount of sand per unit volume in the sand component produced on the discharge port side And the sand composition ratio is high.

Therefore, in order to manufacture sand for concrete having an appropriate standard component as described in the above-described manufacturing method, it is necessary to fix the slit size of the sorting screen to an appropriate standard among the structures of the size sorting apparatus, It is preferable to adjust the sand content ratio to an appropriate standard by adjusting the particle size and the input amount from the centrifugal separator.

13-14 and the like show the configuration of the unit screen sheet material 421 and the slit 422 of the preferred embodiment constituting the sorting screen 420 of the particle size sorting apparatus.

The material of the unit screen sheet material 421 in which the slits 422 are formed is preferably a urethane resin having a Shore hardness of 100-200 or so in consideration of abrasion resistance and stretchability,

In the physical properties, the passing ratio of the 0.08 mm sieve of the standard net should be less than 7.0%, while the weight ratio of the particle size passing through the sieve is from 25 to 65%, 0.3 to 10 to 35%, 0.15 to 2 to 16% %, It is advantageous to remove the particles of about 0.8 Ø or less as much as possible in the screen,

The width of the unit slits 422 formed in the unit screen sheet member 421 is 0.8 mm and the width of the plate members 423 formed between the slits is 2.5 mm and the length of the unit slits is about 11 mm The plate members 423 between the slits and the slits were swung back and forth together with the progress of the sorting screen, so that the slits could be varied to effectively remove particles having a diameter of about 0.8 or less without clogging the slits. In order to adjust the sand component to a proper standard when the standard of the slit is formed as described above, in order to maintain the particle size distribution within the specified range, it is necessary to adjust the oscillation width (installation angle of the vibrator) Most preferred.

Therefore, the particle size sorting apparatus of the present invention can increase the operation effect by adding the installation angle adjusting means of the vibration apparatus, which is an element for determining the vibration width of the screen.

The mounting angle adjusting means of the vibrating device may be formed of a variable configuration capable of adjusting the fixing angle of the frame fixing the vibrating device to the detector housing or may be formed as a fixed type while the fixing angle of the bracket attaching the vibrating device to the frame It is most preferable to form it in an adjustable configuration.

16 shows an apparatus for adjusting the installation angle of a vibrator, which is an example of an installation angle adjusting device for a vibration device.

The apparatus includes a variable bracket 440 for fixing the fixing pieces 431 of the vibrator 430 and a fixed bracket 440 fixedly attached to one side of the upper surface of the fixed frame 413 to fix the variable bracket 440. [ (450).

The variable bracket 440 is composed of an upper plate 441 to which the fixing piece 431 of the vibrator 430 is fixed and a fan-shaped side plate 442 bent to the left and right lower ends of the upper plate, One fixing hole 443 is formed on the vertex side and a plurality of fixing holes 445 are formed on the arc side of the fixing hole 442,

The fixing bracket 450 is formed in an opposite shape to the variable bracket 440 so that the bottom surface 451 is fixed to one side of the upper surface of the fixing frame 413 and the interval between the left and right side plate- The left and right side plates 440 of the variable bracket 440 are formed to have a width to be inserted inwardly and at the same time as the fixing holes of the sectorial side plate 442 of the variable bracket, 453 are formed on the locus of the fixing holes 445 formed in the sectorial side plate 442 of the variable bracket.

With the above configuration, the fixing pieces 431 of the vibrator 430 are fixed to the upper plate 441 of the variable bracket 440 with a fastening bolt or the like, and the vertexes of the variable bracket side plates 442 are fixed to the fixing bracket side When the bolts 460 are fastened through the left and right side plates 442 and 452 in the state where the fixing holes 443 and 453 are aligned with each other after being fitted into the inside of the vertex of the plates 452, The side plate 442 of the fixing bracket 440 is coupled to the left and right side plates 452 of the fixing bracket 450 and the bolt 460 in the form of a hinge.

The movable bracket 440 is rotated up and down about the bolt 460 so that any one of the fixing holes 445 formed in the arcuate portion of the variable bracket side plate 442 is fixed to the fixed bracket side plate The fixing angle of the variable bracket 440 can be arbitrarily adjusted with respect to the fixing bracket 450 by fixing the fixing bracket 455 with the bolt 461 after fixing it to the fixing hole 455 formed in the fixing bracket 450.

When the installation angle adjusting means is added to the fixing means of the vibrator for vibrating the screen for screening in the particle screening apparatus, it is possible to easily adjust the vibration width of the screen, and accordingly, The amount of sand particles discharged per unit time can be easily controlled.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, The present invention is not limited thereto.

As described above, according to the manufacturing method of the present invention and various manufacturing apparatuses performing the same, it is possible to mass-produce Masato, which is harvested in a large amount from Masatosan, which is difficult to cultivate agricultural products and overgrown forests, Not only can the efficiency of the national resources be significantly improved,

It has the effect of preserving the natural environment because it is depleted in resources and becomes a factor of destruction of natural environment and can be easily supplied to civil engineering construction work in place of abandoned river sand,

It is possible to prevent the deterioration of the civil engineering construction work which occupies a considerable amount of the reinforced concrete method by preventing the deterioration of the concrete quality caused by the use of the sea sand,

Compared with the manufacturing method of producing sand by crushing stone taken from Dolsan, it has mass productivity, high profitability and prevention of environmental pollution,

It has the advantage of producing incidental sludge (loess) which is the raw material of building interior and refractory brick, as well as producing concrete sand for proper size.

Claims (16)

Masato gemstone from Masato was put into a primary screening machine equipped with a lattice screen to grind roughly 25 Ø or more of gemstones to a size of about 25 Ø or less from a separate crusher outside the process and then re-introduced into the primary gemstone screening machine. A primary gemstone sorting process for sorting the gemstones, mud, sand, The selected gemstones, mud and sand selected by the primary gemstone sorting machine are sorted by the secondary sorting size to a size of about 8 Ø or less, and the gemstones, sand and sand are transferred to a primary particle size screening and mud washing device. The raw stone is transported to the primary crusher, and the secondary raw stone screening process for crushing it to about 8 Ø or less while feeding the washing water and transferring it to the primary particle size sorting and mud washing device, Sand and mud which are transferred from the secondary stone sorting machine to the primary particle size sorting and mud washing device by supplying the high pressure washing water while lowering the vibration screen mounted on the two stages by downward inclination Sand, mud, etc. of a size of approximately 8 Ø or less are firstly screened and transmitted through the upper screen, and then the lower screen is used to screen and transmit roughly 5 Ø or less of rough stone, sand and mud with water, The raw ore and the outside of the sand particles are firstly separated and transferred to a particle crushing and shaping device together with water and the ores having roughly more than 5Ø filtered in each of the upper and lower screen are re-collected and transferred to the secondary crusher, , Followed by primary particle size screening, primary particle size screening to be added to the mud washing apparatus, mud washing process, In the above-mentioned primary particle size screening and mud washing process, a granular crushing apparatus having a particle size of about 5Ø or less and sand particles and clay, Outside the rough surface of the rough surface, it is possible to crush the internally cracked particles by forcing them to form stable and non-uniform sand particles. The clay is finely adhered to the surface of cracks, A particle pulverizing and shaping step for separating and removing, The sand particles, clay, and water mixture transferred from the particle crushing and shaping apparatus and stored in the storage tank are introduced into the granular and clay centrifuge at constant pressure through a sand pump at a constant amount per unit time, The large coarse sand particles are distributed to the inner wall side of the conical centrifuge tube by the centrifugal force and are rotated and discharged, and the fine grains and mud of light specific gravity are gradually distributed in the vicinity of the central axis of the conical centrifuge tube The injection amount per unit time is adjusted to a certain amount larger than the discharge amount per unit time of the centrifugal tube while being distributed while being distributed. By the discharge load generated at the discharge port side distal end portion of the centrifugal tube of the conical centrifugal tube, Fine grained sand particles which are scattered around the shaft and light in specific gravity The mud and the like are separated into and discharged from the sedimentation tank by the backwashing and discharging with a separate discharge pipe installed at the rear center of the centrifuge pipe together with water, The coarse sand particles having a relatively large specific gravity and the low concentration mud water discharged from the particle size and sludge centrifugal separator are discharged through a screen having a slit having a predetermined width and a length formed on the entire surface at regular intervals, And a vibrating device for vibrating the frame so as to be freely vibratable in the frame so that the discharge port side is formed at a certain angle higher than the charging port side and the selected sand particles are forwarded to the discharge port side, And the sand particles selected at the slit size or more are gradually advanced to the discharge port side and discharged to the sand loading section. The sand particles are discharged to the sand loading section Wherein the method comprises the steps of: Masato gemstones collected from Masato Mountains are classified into primary and secondary stone selection, primary particle size selection, mud washing process, particle grinding, shaping process, particle size and mud centrifugation process, and concrete for particle size selection process An apparatus for performing the primary particle size sorting and mud washing process in a manufacturing facility performing a sand production method, A frame made up of a rectangular oblong body having upper and lower openings and a guide plate having a predetermined height from side to side, and a frame having a predetermined depth in the inside of the frame and being supported by several horizontal frames at regular intervals over the upper and lower ends, A secondary screen having a primary screen having a hole and a through hole having a smaller size than the secondary screen, a high-pressure washing water supply tube disposed between the left and right sides of the frame above the primary screen, An upper and a lower discharge port respectively formed by opening the side frames and a horizontal frame fixed between the left and right guide plates at one side of the upper and left sides of the left and right guide plates; A hopper to be installed, and a mud washing enclosure are formed, and the granularity sorting, the front and rear ends of the mud washing enclosure Wherein the chamber is supported by a tubular shock absorber at a low forward position and at a high rearward position on a fixed support plate on both front and rear sides with a predetermined elastic force. The screen of claim 2, wherein the first and second screens of the particle screening, The primary screen 110 on the upper side is formed of a mesh screen capable of passing rough stones of approximately 8 Ø woven with a thick steel wire and the secondary screen 115 on the lower side is formed with holes of approximately 5 Ø spaced every 5 mm And a plurality of unitary sheet material net made of abrasion resistant urethane resin formed continuously are assembled by detachable manner. The structure of the vibrating device of the particle sorting and mud washing device according to claim 2, A lateral frame is fixed to the upper end of the middle portion of the left and right guide plates 106 of the mud washing casing frame, and two transverse vibrating shafts 120 in the transverse direction are mounted on the axle brackets 121 And the eccentric weight 122 is fixed to the left and right ends of the vibrating shafts 120. The vibrating shafts 120 are fixed to the fixing table 108 at one side of the frame 101 And the driving motor 124 and the universal transmission shaft 126 are interlocked with each other. Masato gemstone collected from Mt. Masato is divided into first and second ore selection process, primary particle size selection, mud washing process, particle grinding process, particle size and mud centrifugation process, sand for concrete An apparatus for performing the above-mentioned particle grinding and shaping processes in a manufacturing facility performing a manufacturing method, And an inlet conduit formed at the upper end of the one side wall and having a discharge port at the upper end thereof and having a constant length from the inner wall to the lower end by extending from the inlet port, A rotating shaft rod vertically penetrating through the center of the lid of the grinding tank to be freely rotatably pivoted, a driving motor axially driven to drive the rotating shaft rod at an upper end of the lid, and a plurality of radial And a crushing blade. The apparatus for shaping and crushing sand in a sand making facility using Masato. The method according to claim 5, wherein the grinding tank structure of the particle grinding / A plurality of polygonal enclosures are connected in series, and the discharge port of the first enclosure is hermetically connected to the inlet of the second enclosure, and the second enclosure And the discharge port is connected to the inlet of the enclosure connected to the next, the driving motors of the enclosures are configured to be variable in speed, and the revolutions of the rotating shaft of the enclosure after the first is controlled to be controlled in a yearly manner Particle grinding, shaping device of sand production facility using Masato. The pulverizing blade structure of the particle grinding and shaping apparatus according to claim 5, The steel plate grinding blade having a constant width with a wear-resistant rubber plate on both sides is fixed at an inclined angle to one end of the rotary shaft rod. In the several grinding blade groups radially arranged at the same height, the unit grinding blades alternately Wherein the sand mill is sandwiched between the sand mill and the sand mill. Masato gemstone collected from Mt. Masato is divided into first and second ore selection process, primary particle size selection, mud washing process, particle grinding process, particle size and mud centrifugation process, sand for concrete An apparatus for performing the particle size and slurry centrifugation process in a manufacturing facility performing a manufacturing method, A half-conical centrifuge tube having a small diameter at the discharge port side and a large diameter at the injection port side, a half-conical centrifuge tube having a longer length ratio than the bottom surface, a cylindrical discharge nozzle removably installed at the discharge port side of the centrifuge tube, An injection tube which is eccentrically formed eccentrically in a direction orthogonal to a central axis of the body at a rear end of the body, a pouring nozzle detachably connected to the pouring tube, A sand pump for lifting a mixture of sand, clay, and water discharged from the shaping device to a predetermined pressure; an injection transfer pipe having a lower end detachably connected to the sand pump and an upper end connected detachably to the injection nozzle; A rear circular plate which is detachably assembled to the rear circular plate, a rear circular plate having a predetermined diameter at a central portion of the rear circular plate, And a rear discharge pipe having a discharge nozzle and a rear discharge pipe having a flange portion for detachably fixing the rear circular plate in a detachable manner to the rear end of the body, and an abrasion resistant coating member is attached to the inner wall of each of the structural members, Size and sludge centrifugal separator of a sand production facility using. The semi-cone centrifugal separator according to claim 8, wherein the semi-conical centrifuge tube of the particle size and sludge centrifugal separator has a structure in which a coating member (311) of a wear-resistant rubber material having a predetermined thickness is attached to the inner wall of the cone- And a spiral groove (312) having a certain depth and width is formed toward the discharge port side on the inner wall side of the coating member (311). The apparatus of claim 9, wherein the inner wall of the semi-conical centrifuge tube of the granular and sludge centrifuge is formed as a spiral groove having a corrugated cross-section. The centrifugal separator according to claim 8, wherein the particle size and the sludge centrifugal separator are installed in parallel on the left and right sides of the rear side of the particle size sorter, and the central axes of the respective conical centrifugal separators are disposed such that the discharge port side is positioned lower Particle size and mud centrifugal separator of sand production facility using Masato. Masato gemstone collected from Mt. Masato is divided into first and second ore selection process, primary particle size selection, mud washing process, particle grinding process, particle size and mud centrifugation process, sand for concrete In the manufacturing facility performing the manufacturing method, An apparatus for performing a sorting process, And a rectangular screen screen enclosure which is long in the longitudinal direction and is openable in an upper and a lower direction so as to receive a mixture of sand and mud water. The front end side of the screen enclosure is opened at a predetermined height, And the rear end side is formed into a water collecting tank type in which three sides are closed, and a sorting screen in which slits of regular size are continuously formed in four directions in the interior of the housing is fixed parallel to and at the same height as the height of the discharge port at the front end, A vibrating device is provided on one lateral side of the transverse frame fixed between the left and right side plates so that the entire screening screen housing is supported by the support frame freely vibratable with several tubular cushioning members in a state in which the rear end side is lower than the discharge port side by a certain angle Characteristic particle size selection device of sand production using Masato. The screen screen according to claim 12, wherein the screen screen is provided in a screening enclosure of a size selected from the group consisting of a unit screen plate member (422) having slits (422) 421) are folded in a continuous manner in a four-sided manner in accordance with the inner surface area of the screen screen housing. The screening apparatus according to claim 12, wherein the slits formed on the screen of the particle size sorter are 11 mm in length, 0.8 mm in width, and 2.5 mm in spacing between the slits and the slits. Selection of Particle Sizes in Sand Making Facilities Using. 13. The screening apparatus according to claim 12, wherein the screening box includes a screening box having a screening box and a screening box, Wherein the lower end of the vibrator 430 is inclined toward the discharge port 411 when the two vibrators 430 are viewed from the side. 13. The screening apparatus according to claim 12, wherein the screening box is provided with a tilting angle adjustment means for tilting the vibrating screen with respect to the screen. Particle sizing device for sand making equipment.