CN212237720U

CN212237720U - Argillization waste rock water thick liquids sediment system of arranging among gangue resourceful treatment

Info

Publication number: CN212237720U
Application number: CN202020276366.2U
Authority: CN
Inventors: 钟守荣; 梅盖; 满世华
Original assignee: Sichuan Green Mine Environmental Protection Technology Co ltd
Current assignee: Sichuan Green Mine Environmental Protection Technology Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-12-29
Anticipated expiration: 2030-03-09

Abstract

The utility model discloses a system for discharging sand from argillization gangue water slurry in the coal gangue resource treatment, which is used for extracting sand from the argillization gangue slurry obtained by the intermediate separation in the coal gangue treatment process, and comprises a primary mud-water separation device and a spiral sand washing device, wherein the argillization gangue water slurry is separated into a primary heavy separator and a primary light separator after passing through the primary mud-water separation device for gravity separation; and the primary heavy separated matter enters the spiral sand washing equipment for secondary filtration, and the obtained secondary heavy separated matter and secondary light separated matter are obtained, and the primary light separated matter and the secondary light separated matter are intensively discharged into the arranged filter-pressing flocculation equipment for flocculation and filter pressing to obtain filter-pressing treated matter. The utility model discloses a multistage treatment facility is better carries out husky extraction to the mud waste rock thick liquid that gets into, obtains better washing sand and peat.

Description

Argillization waste rock water thick liquids sediment system of arranging among gangue resourceful treatment

Technical Field

The utility model belongs to the technical field of the slay screening, concretely relates to argillization waste rock water thick liquids sediment system of arranging among gangue resource processing.

Background

The coal gangue is solid waste discharged in the coal mining process and the coal washing process, and is a black and gray rock which has lower carbon content and is harder than coal and is associated with a coal bed in the coal forming process. Comprises tunneling waste rocks in the tunneling process of a roadway, waste rocks extracted from a top plate, a bottom plate and an interlayer in the mining process, and washing waste rocks extracted in the coal washing process. The main components of the material are Al2O3 and SiO2, and the material also contains Fe2O3, CaO, MgO, Na2O, K2O, P2O5, SO3 and trace rare elements in different quantities.

The coal associated waste rock generated in the whole coal mining process is one of mining solid wastes, and comprises a mixture of washed gangue in a coal washing plant, hand-selected gangue in coal production, coal and rock discharged in the tunneling of a half coal roadway and a rock roadway, white gangue out of a coal system stacked together with the coal gangue and the like. In particular a mixture of carbonaceous, argillaceous and sandy shale, having a low calorific value. Contains carbon 20-30 wt% and humic acid. In modern society, about 1000Mt of coal gangue is stored every year, and about 100Mt is continuously discharged every year, so that not only is the land occupied accumulated, but also spontaneous combustion can pollute air or cause fire. The coal gangue is mainly used for producing building materials such as lightweight aggregate of gangue cement and concrete, refractory bricks and the like, and can also be used for recovering coal, co-firing coal and gangue for power generation, preparing chemical products such as crystalline aluminum chloride, water glass and the like, extracting precious and rare metals and being used as fertilizer.

Namely, the coal gangue has certain residual value, and partial substances contained in the coal gangue are separated through a certain treatment process, so that economic benefit can be generated, and the coal mining cost is reduced. For example, coal and pyrite are recovered, good coal is washed from coal gangue by a simple process, poor coal is separated from the gangue by screening, and pyrite is simultaneously separated, or pyrite, washed coal and middlings are recovered from a jigger or a flat table flow for coal separation. The recovered coal can be used as fuel of power boiler, the washing waste rock can be used as building material, and the pyrite can be used as chemical raw material.

However, in the prior art, there are many treatment methods for coal gangue, but no solution for better recovery and resource recycling is provided, and most of the existing treatment methods are harmless treatment, namely, solid waste treatment is performed by using the coal gangue as one of solid wastes. Or directly used as a filler or other building materials, but the material can not meet the strength requirement when in use because the material contains organic matters and inorganic matters.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a.

The utility model discloses the technical scheme who adopts does:

a system for discharging sand from a argillized gangue water slurry in the resource treatment of coal gangue is used for extracting sand from the gangue slurry obtained by the intermediate separation in the process of treating the coal gangue and comprises a primary mud-water separation device and a spiral sand washing device, wherein the argillized gangue water slurry is separated by the primary mud-water separation device subjected to gravity separation to obtain a primary heavy separator and a primary light separator;

and the primary heavy separated matter enters the spiral sand washing equipment for secondary filtration, and the obtained secondary heavy separated matter and secondary light separated matter are obtained, and the primary light separated matter and the secondary light separated matter are intensively discharged into the arranged filter-pressing flocculation equipment for flocculation and filter pressing to obtain filter-pressing treated matter.

The coal gangue is a solid waste obtained in the coal mining and washing processes, in particular to a hard black mixture comprising a plurality of substances. A large amount of coal gangue is often stacked in the open air in the coal collection process, so that the occupied area is large, the normal coal collection work is influenced, meanwhile, because a certain amount of combustible carbon is contained in the coal gangue, the coal gangue is directly discarded to cause waste, but the coal gangue cannot reach the use standard when being used as building materials, or the coal gangue is high in cost after being treated to reach the standard state, and the waste is high.

Therefore, the coal gangue needs to be subjected to subsequent resource treatment, energy substances in the coal gangue can be reserved, the purity is improved as much as possible so as to be convenient for power generation, the mineral material in the coal gangue can be used as a building material, and the core point of the treatment is as follows: and (5) separating.

The utility model relates to a handle the intermediate product after its separation and carry out the equipment of deepening processing among the gangue technology for multistage separation obtains the washing sand that can regard as the building materials to use. When the coal gangue is treated, mud and gangue separation is carried out on the coal gangue, the initial raw material contains a large amount of mud, a mud-water mixture obtained after elutriation also contains a large amount of sand and small particles, and the coal gangue obtained after elutriation and separation is continuously subjected to multi-stage treatment so as to be recycled.

The mud-water mixture is muddy gangue water slurry, the water content of the material is high, the sand and stone with smaller particle size dissolved in water can be separated by primary mud-water separation equipment to obtain primary light separated substance, the obtained primary heavy separated substance also contains a certain amount of silt, secondary elutriation needs to be carried out in spiral sand washing equipment, the water-insoluble substance close to the lower end of the height of the water-insoluble substance is lifted upwards by the spiral sand washing equipment through the inclined spiral sand washing equipment, but mud cannot be carried upwards by the spiral sand washing equipment due to a certain gap in the spiral sand washing equipment, is gathered at the lowest end of the spiral sand washing equipment and overflows the spiral sand washing equipment to be mixed with the primary light separated substance to carry out flocculation filter pressing treatment.

The flocculation and filter pressing treatment is that impurities in the obtained fluid with high water content are precipitated by a flocculant added, clear water at the upper part in a filter pressing flocculation device is discharged outwards to be used as sewage for treatment, and if the discharged wastewater reaches the use standard, the discharged wastewater is reused as circulating water for production. And the flocculated precipitate is subjected to pressure filtration to obtain a mud cake, and then subsequent treatment is carried out according to the detection index of the mud cake. It is worth mentioning that because the raw materials processed by the utility model contain a large amount of mineral substances, the soil therein contains a certain amount of humus, if the heavy metal residue is less, the mud cake can be used as peat after the rotten fermentation, namely peat and peat. The peat can be changed into lignite through further diagenetic action, and has good water physical, physical-chemical and biological properties due to the fact that the peat is rich in various beneficial components such as protein, humic acid and mineral substances, so that the peat can be widely used in agriculture.

The secondary heavy isolate separated from the spiral sand washing equipment is sold as a finished product of washed sand, although the material cannot be used as concrete and has strength lower than river sand, the secondary heavy isolate is used as a raw material of commercial mortar component sand, can be used for building brick powder, has a compression coefficient up to the standard and has cost far lower than that of the manual washed sand of the rock.

Compared with the prior art, the complete resource utilization of the coal gangue can be realized through the elutriation treatment of the coal gangue, the obtained silt and peat are sold as commodities, the secondary pollution is avoided, and the cost of coal mining is reduced.

And further, the secondary treatment equipment is used for treating the primary heavy isolate, the secondary treatment equipment performs rolling treatment on the primary heavy isolate entering the secondary treatment equipment in a physical crushing mode to reduce the particle size of solid matters in the primary heavy isolate, and the crushed primary heavy isolate enters the spiral sand washing equipment.

Furthermore, a third-stage treatment device is arranged between the second-stage treatment device and the spiral sand washing device, and solid matters with particle sizes larger than a preset threshold value, which are obtained by the first-stage heavy separation from the second-stage treatment device entering the third-stage treatment device, enter the second-stage treatment device again for crushing.

Further, the primary mud-water separation equipment is a piston jigger, the piston jigger comprises a hopper and a material sieve arranged on an opening of the hopper, and a piston vibrator arranged in the hopper provides vibration force to cause materials with the particle size smaller than the aperture of the material sieve in the argillized gangue water slurry falling into the material sieve to enter the hopper to form primary heavy separation materials; the materials which do not pass through the material sieve are gathered towards the lower side of the obliquely arranged material sieve and enter the filter-pressing flocculation equipment as primary light separated matters.

The jigger is equipment for realizing jigging process. The material is mainly sorted according to density difference in the vertical lifting speed-changing medium flow. The difference of the particle size and the shape of the materials has certain influence on the beneficiation result. The medium used in jigging can be water or air. When water is used as a sorting medium, the method is called hydraulic jigging; when air is used as a sorting medium, the air jigging is called as air jigging. The piston jigger is used as a sorting device and is commonly used for sorting mined materials in coal mines or other mineral exploitation actions, and for coal gangue, the material sieve arranged on the jigger is used for vibrating and screening. But different with other screening structures, the utility model provides a material sieve sets up towards a lopsidedness, and the pan feeding side sets up in the higher one end of material sieve.

And have certain water yield in the hopper, when the vibration of piston vibrator, water in the hopper can produce certain rocking, causes to form the impact rivers in material sieve both sides, and should strike rivers from top to bottom and can pat the material that is in the material sieve outside for multiple materials such as light coal, mud waste rock water thick liquids, rock particles, carbon in the argillization waste rock water thick liquids that get into can carry out the separation of certain degree. The liquid mixture with small particle size or fluid enters the hopper through the material sieve, but the liquid mixture which cannot pass through the material sieve moves to the lower side of the material sieve and is intensively fed into the filter-pressing flocculation equipment to be used as circulating water.

Furthermore, a cyclone separation device is arranged in front of the primary mud-water separation device, the raw materials are separated by the cyclone separation device to obtain a argillized gangue water slurry and a mud-water mixture, and the mud-water mixture enters a filter pressing flocculation device.

Furthermore, the secondary treatment equipment is a constant-gap roll pair machine, and materials entering the secondary treatment equipment are extruded and crushed.

Further, the third-stage treatment equipment is a rotary screen device.

The drum screen structure is a drum structure which is driven by a speed reduction motor to rotate axially, the drum is divided into a plurality of sections, material leaking holes with different sizes of gaps are formed in the surface of each section, the gaps are continuously enlarged from a feeding end to a discharging end, material leaking can be conducted in sections, particles larger than the minimum gap are discharged into secondary treatment equipment again to be crushed until the crushed particle size is smaller than the maximum gap of the drum screen.

Furthermore, the spiral sand washing equipment comprises a totally-enclosed pipe body arranged in an inclined manner and a spiral rod arranged in the pipe body, wherein one end of the pipe body is provided with an overflow port, so that the secondary light separated matters can fall out and enter the filter-pressing flocculation equipment;

the pipe body is provided with a feed inlet at one side close to the overflow port, a discharge port convenient for the secondary heavy separated substances to fall out is arranged at one side far away from the overflow port, and a speed reduction motor used for driving the screw rod is arranged at the end part of one end of the pipe body, which is provided with the discharge port.

Because the utility model discloses a spiral sand washing equipment, then from the majority that the overflow mouth came out be mud, and in this mud the majority be the soluble substance and the biological humus that the quality is lighter, most all along with rivers downward flow. And the sand with larger mass in the entering first-level heavy separator is wetted by water to form sludge with certain viscosity, the sludge is lifted upwards by the screw rod, and the water content is gradually reduced in the lifting process, so that most of the sand discharged from the discharge port is the refined water-containing sand, and the sand can be directly sold by washing sand raw materials.

Further, the materials are transported among the primary mud-water separation equipment, the secondary treatment equipment and the tertiary treatment equipment in a belt transmission mode.

The utility model has the advantages that:

the utility model discloses a mechanism requires to handle the gangue with the building materials, draws qualified mortar and sand for the mortar in the argillization gangue water slurry of preceding stage separation to guarantee that the peat quality provides equipment support, the special combination in this technique of non carries out the conventional equipment and the combination that adaptability designed, can not accomplish this functional requirement and reach this effect. The device is used for discharging the sand from the mud and the gangue, the sand is used up, and the obtained peat has better quality.

Drawings

FIG. 1 is a schematic view of the structural connection frame of the whole mechanism of the present invention;

FIG. 2 is a schematic view of the whole mechanism of the present invention;

FIG. 3 is a flow chart of the method for recycling coal gangue by using the device of the present invention.

In the figure: 1-primary mud-water separation equipment, 1.1-hopper, 1.2-material sieve, 1.3-piston vibrator, 2-spiral sand washing equipment, 3-secondary treatment equipment, 4-tertiary treatment equipment and 5-cyclone separation equipment.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined. In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

a large amount of coal gangue is often stacked in the open air in the coal collection process, so that the occupied area is large, the normal coal collection work is influenced, meanwhile, because a certain amount of combustible carbon is contained in the coal gangue, the coal gangue is directly discarded to cause waste, but the coal gangue cannot reach the use standard when being used as building materials, or the coal gangue is high in cost after being treated to reach the standard state, and the waste is high. Therefore, the coal gangue needs to be subjected to subsequent resource treatment, energy substances in the coal gangue can be reserved, the purity is improved as much as possible so as to be convenient for power generation, and mineral materials in the coal gangue can also be used as building materials.

The embodiment discloses a system for discharging sand from a argillized gangue water slurry in coal gangue resource treatment, which is mainly used for discharging sand from the argillized gangue water slurry obtained in a coal gangue treatment process. The method comprises a primary mud-water separation device and a spiral sand washing device 2, wherein the argillized gangue water slurry is separated through the primary mud-water separation device for gravity separation to obtain a primary heavy separator and a primary light separator.

Wherein, the first-class heavy separated substance enters the spiral sand washing device 2 to be filtered again, and the obtained second-class heavy separated substance and the second-class light separated substance are obtained, and the first-class light separated substance and the second-class light separated substance are intensively discharged into the arranged filter-pressing flocculation device to be flocculated and filter-pressed to obtain filter-pressing treated substances.

The mud-water mixture is the argillized gangue water slurry, the water content of the material is high, sand and stones with small particle sizes dissolved in water can be separated by primary mud-water separation equipment to obtain a primary light separator, the obtained primary heavy separator also contains a certain amount of silt, and secondary elutriation needs to be carried out in the spiral sand washing equipment 2.

The water-insoluble substances close to the lower end of the spiral sand washing device 2 are lifted upwards by the spiral sand washing device 2 through the inclined spiral sand washing device 2, but because a certain gap exists in the spiral sand washing device 2, mud cannot be taken upwards by the spiral sand washing device 2, but is gathered at the bottommost end of the spiral sand washing device 2 and overflows the spiral sand washing device 2 to be mixed with the primary light separated substance to carry out flocculation filter pressing treatment. The flocculation and filter pressing treatment is that impurities in the obtained fluid with high water content are precipitated by a flocculant added, clear water at the upper part in a filter pressing flocculation device is discharged outwards to be used as sewage for treatment, and if the discharged wastewater reaches the use standard, the discharged wastewater is reused as circulating water for production. And the flocculated precipitate is subjected to pressure filtration to obtain a mud cake, and then subsequent treatment is carried out according to the detection index of the mud cake.

The secondary heavy isolate separated from the spiral sand washing equipment 2 is sold as a finished product of washing sand, although the material cannot be used as concrete and has strength lower than river sand, the secondary heavy isolate is used as a raw material of commercial mortar component sand, can be used for building brick powder, has a compression coefficient up to the standard and has cost far lower than that of manual washing sand by using mountain rocks.

The whole mechanism further comprises a secondary treatment device 3 for treating the primary heavy separator, the secondary treatment device 3 performs rolling treatment on the primary heavy separator entering the device in a physical crushing mode to reduce the particle size of solid matters in the primary heavy separator, and the crushed primary heavy separator enters the spiral sand washing device 2.

And a third-stage treatment device 4 is also arranged between the second-stage treatment device 3 and the spiral sand washing device 2, and solid matters with the particle size larger than a preset threshold value, which are obtained by the first-stage heavy separation from the second-stage treatment device 3 entering the third-stage treatment device 4, enter the second-stage treatment device 3 again for crushing.

Example 2:

the embodiment also discloses a system for discharging the sand from the argillized gangue water slurry in the coal gangue resource treatment, as shown in fig. 1 and 2, the system comprises a primary mud-water separation device and a spiral sand washing device 2, and the argillized gangue water slurry is separated by the primary mud-water separation device for gravity separation to obtain a primary heavy separator and a primary light separator. And the primary heavy separated substance enters the spiral sand washing equipment 2 to be filtered again, and the obtained secondary heavy separated substance and secondary light separated substance are obtained, and the primary light separated substance and the secondary light separated substance are intensively discharged into the arranged filter-pressing flocculation equipment to be flocculated and filter-pressed to obtain filter-pressing treated substances.

The mechanism further comprises a secondary treatment device 3 for treating the primary heavy separator, the secondary treatment device 3 performs rolling treatment on the primary heavy separator entering the device in a physical crushing mode to reduce the particle size of solid matters in the primary heavy separator, and the crushed primary heavy separator enters the spiral sand washing device 2. And a third-stage treatment device 4 is also arranged between the second-stage treatment device 3 and the spiral sand washing device 2, and solid matters with the particle size larger than a preset threshold value, which are obtained by the first-stage heavy separation from the second-stage treatment device 3 entering the third-stage treatment device 4, enter the second-stage treatment device 3 again for crushing.

The primary mud-water separation equipment 1 adopted in the embodiment is a piston jigger, the piston jigger comprises a hopper 1.1 and a material sieve 1.2 arranged on an opening of the hopper 1.1, and a piston vibrator 1.3 arranged in the hopper 1.1 provides vibration force to cause materials with the particle size smaller than the aperture of the material sieve 1.2 in the argillized gangue water slurry falling into the material sieve 1.2 to enter the hopper 1.1 to form primary heavy separation materials; the material which does not pass through the material screen 1.2 is gathered towards the lower side of the material screen 1.2 which is arranged obliquely and enters the press filtration flocculation equipment as primary light separated substance.

When water is used as the sorting medium, the process is called hydraulic jigging. The piston jigger is used as a sorting device and is commonly used for sorting mined materials in coal mines or other mineral exploitation actions, and for coal gangue, the material sieve 1.2 arranged on the jigger is used for vibrating and screening. And have certain water yield in the hopper 1.1, when piston vibrator 1.3 vibrates, water among the hopper 1.1 can produce certain rocking, causes to form the impact rivers in material sieve 1.2 both sides, and should strike rivers from top to bottom and can pat the material that is in the material sieve 1.2 outside for light coal in the argillization waste rock water thick liquids that gets into, mud waste rock water thick liquids, multiple materials such as rock particle, carbon can carry out the separation of certain degree.

The liquid mixture with smaller particle size or fluid enters the hopper 1.1 through the material screen 1.2, but the liquid mixture which cannot pass through the material screen 1.2 moves to the lower side of the material screen 1.2 and intensively enters the filter-pressing flocculation equipment to be used as circulating water.

And a cyclone separation device 5 is arranged in front of the primary sludge-water separation device, the raw materials are separated by the cyclone separation device 5 to obtain a argillized gangue water slurry and a sludge-water mixture, and the sludge-water mixture enters the filter pressing flocculation device.

The secondary treatment equipment 3 is a constant-gap roll crusher, and the material entering the secondary treatment equipment 3 is crushed by extrusion. The tertiary treatment equipment 4 is a drum screen device.

The spiral sand washing equipment 2 comprises a totally-enclosed pipe body and a spiral rod, wherein the totally-enclosed pipe body is obliquely arranged, the spiral rod is arranged in the pipe body, and one end of the pipe body is provided with an overflow port, so that the secondary light separated matters can fall out and enter the filter-pressing flocculation equipment; the pipe body is provided with a feed inlet at one side close to the overflow port, a discharge port convenient for the secondary heavy separated substances to fall out is arranged at one side far away from the overflow port, and a speed reduction motor used for driving the screw rod is arranged at the end part of one end of the pipe body, which is provided with the discharge port.

The materials are transferred among the primary mud-water separation equipment 1, the secondary treatment equipment 3 and the tertiary treatment equipment 4 in a belt transmission mode.

The function of the whole mechanism is as follows: the sand in the argillization gangue water slurry is separated and discharged, the discharged sand is guaranteed not to contain mud and coal, the granularity meets the requirement of commercial mortar, and the quality of peat is guaranteed.

The principle of the whole mechanism is as follows: as shown in figures 1 and 2, the argillized gangue water slurry is pressurized by a pump and sent into a cyclone separation device 5, and heavy sand particles sink down due to rotary centrifugation and wall attachment and are discharged into a jigger through a reducing port. The light coal and the mud gangue water slurry are discharged to the filter-pressing flocculation equipment through a pipeline.

Under the pumping action of a piston vibrator 1.3, water in a hopper 1.1 of the jigger surges up and down through a material screen 1.2 through which the water in the hopper permeates, so that light coal, mud and gangue and heavy sand are layered and move to the tail end, and finally the coal, the light mud and gangue and water slurry are merged into a pressure filtration flocculation tank through overflow.

Heavy fine sand enters a hopper 1.1 through a material sieve 1.2 under the action of the upper and lower water flows, and is finally discharged into a sand washer through a sand discharging wheel; and discharging heavy coarse sand and gangue particles into a counter roll machine through a speed-regulating gangue discharge wheel for fine crushing, then screening through a drum screen, feeding qualified fine sand into a sand washer, and pumping unqualified fine sand back through a pump and then finely crushing the unqualified fine sand in the counter roll machine. And the finished product washed sand is obtained at the discharge end of the sand washer and is conveyed into a commercial sand pulp by a conveyer belt to be sold in a washed sand warehouse.

The equipment of the embodiment is applied to a coal gangue resource treatment method, as shown in fig. 3, the method specifically sequentially performs three separation steps:

first-stage separation, namely screening white gangue in the coal gangue raw material as a sand material for treatment through external characteristic difference, and obtaining black mixed gangue after screening;

performing secondary separation, namely obtaining water-washed coarse mixed gangue and argillized gangue water slurry by using the obtained black mixed gangue in a water washing mode and using the particle size A of the set material particle size as a separation condition;

performing third-stage separation, namely obtaining fine sand gangue and mixed gangue from the obtained water-washed coarse mixed gangue by taking the particle size B of the set material particle size as a separation condition; the mixed gangue is processed by a soft gangue and hard gangue separator to obtain soft gangue and hard gangue, the soft gangue and the fine sand gangue are processed together to obtain fine sand used for bricking, and the hard gangue is processed to obtain hard medium sand.

The set particle size A during secondary separation is 5mm, the material with the particle size larger than 5mm during separation is the washing coarse mixed gangue, and the material with the particle size smaller than 5mm is the argillization gangue water slurry.

The three-stage separation comprises the following specific steps: conveying the obtained water-washed coarse mixed gangue to a jigger for washing by taking water as a medium, and obtaining finished products of washed clean coal, washed middlings and washed gangue, wherein the washed middlings are treated as argillization gangue water slurry after being crushed by adding water; after the washing waste rock is dehydrated, mixed waste rock with the particle size of more than 10mm and fine sand waste rock with the particle size of less than 10mm are obtained by taking the particle size of 10mm as a dividing point, the mixed waste rock is input into a soft and hard waste rock separator to obtain soft waste rock and hard waste rock, and the soft waste rock and the fine sand waste rock are processed together to obtain fine sand.

And (3) carrying out sand extraction on the argillized gangue water slurry obtained by the second-stage separation in a water washing mode, obtaining washed sand and sand mud after the sand extraction step, and obtaining peat after the sand mud is dehydrated.

The present invention is not limited to the above-mentioned alternative embodiments, and various other products can be obtained by anyone under the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims

1. The utility model provides a argillization waste rock water thick liquids sediment system of arranging among coal gangue resource processing for carry out husky extraction to the mud waste rock thick liquids that obtains its middle separation at the processing coal gangue in-process, its characterized in that: the method comprises a primary mud-water separation device (1) and a spiral sand washing device (2), wherein the argillized gangue water slurry is subjected to post-separation by the primary mud-water separation device (1) for gravity separation to obtain a primary heavy separator and a primary light separator;

and the primary heavy separated matter enters the spiral sand washing equipment (2) for secondary filtration, and the obtained secondary heavy separated matter and secondary light separated matter are obtained, and the primary light separated matter and the secondary light separated matter are intensively discharged into the arranged filter-pressing flocculation equipment for flocculation filter-pressing to obtain filter-pressing treated matter.

2. The argillization gangue water slurry sand discharging system in the coal gangue resource treatment according to claim 1, which is characterized in that: the secondary treatment equipment (3) is used for treating the primary heavy isolate, the primary heavy isolate entering the secondary treatment equipment (3) is rolled in a physical crushing mode to reduce the particle size of solid matters in the primary heavy isolate, and the crushed primary heavy isolate enters the spiral sand washing equipment (2).

3. The argillization gangue water slurry sand discharging system in the coal gangue resource treatment according to claim 2, which is characterized in that: and a third-stage treatment device (4) is also arranged between the second-stage treatment device (3) and the spiral sand washing device (2), and solid with the particle size larger than a preset threshold value obtained by the first-stage heavy separation from the second-stage treatment device (3) enters the third-stage treatment device (4) to be crushed again in the second-stage treatment device (3).

4. The argillization gangue water slurry sand discharging system in the coal gangue resource treatment according to claim 2 or 3, which is characterized in that: the primary mud-water separation equipment (1) is a piston jigger, the piston jigger comprises a hopper (1.1) and a material screen (1.2) arranged on an opening of the hopper (1.1), and a piston vibrator (1.3) arranged in the hopper (1.1) provides vibration force to cause the materials with the particle size smaller than the aperture of the material screen (1.2) in the argillized gangue water slurry falling into the material screen (1.2) to enter the hopper (1.1) to form a primary heavy separator; the material which does not pass through the material screen (1.2) is gathered towards the lower side of the obliquely arranged material screen (1.2) and enters the filter-pressing flocculation equipment as primary light separated substance.

5. The system of claim 4, wherein the system is characterized in that: and a cyclone separation device (5) is arranged in front of the primary sludge-water separation device (1), the raw materials are separated by the cyclone separation device (5) to obtain a argillized gangue water slurry and a sludge-water mixture, and the sludge-water mixture enters the filter pressing flocculation device.

6. The system of claim 4, wherein the system is characterized in that: the secondary treatment equipment (3) is a constant-gap roll pair machine, and the material entering the secondary treatment equipment (3) is extruded and crushed.

7. The argillization gangue water slurry sand discharging system in the coal gangue resource treatment according to claim 3, which is characterized in that: the third-stage treatment equipment (4) is a drum screen device.

8. The argillization gangue water slurry sand discharging system in the coal gangue resource treatment according to any one of claims 1 to 3, which is characterized in that: the spiral sand washing equipment (2) comprises a totally-enclosed pipe body and a spiral rod, wherein the totally-enclosed pipe body is obliquely arranged, the spiral rod is arranged in the pipe body, and one end of the pipe body is provided with an overflow port, so that the secondary light separated matters fall out and enter the filter-pressing flocculation equipment.

9. The system of claim 4, wherein the system is characterized in that: the materials are transferred among the primary mud-water separation equipment (1), the secondary treatment equipment (3) and the tertiary treatment equipment (4) in a belt transmission mode.