CN110756308B

CN110756308B - High-temperature high-pressure based nonmetal mineral double-spray-gun crushing device

Info

Publication number: CN110756308B
Application number: CN201910999749.4A
Authority: CN
Inventors: 周友行; 宋佳林; 徐长锋; 赵玉; 易倩
Original assignee: Xiangtan University
Current assignee: Xiangtan University
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2021-12-14
Anticipated expiration: 2039-10-21
Also published as: CN110756308A

Abstract

A nonmetal mineral double-spray-gun crushing device based on high temperature and high pressure mainly solves the technical problems that existing ultrafine crushing equipment cannot well protect mineral crystals, crushing efficiency is general, production cost is high, occupied area is large, and the environment is polluted. The key points of the technical scheme are as follows: it includes pressure vessel, spray gun, reaction vessel, collection chamber (16), booster pump (5) and electrical source controller (4), the corresponding position of collecting chamber (16) relative both sides wall has respectively seted up the entry respectively with the reaction vessel intercommunication, the reaction vessel passes through spray gun and pressure vessel intercommunication, pressure vessel communicates with booster pump (5) respectively, the spray gun is connected with electrical source controller (4) respectively, the last feed inlet (8) that is provided with of pressure vessel, the pressure vessel below still is provided with heater (9) and heaies up for pressure vessel I (11) and pressure vessel II (20).

Description

High-temperature high-pressure based nonmetal mineral double-spray-gun crushing device

Technical Field

The invention relates to the field of superfine grinding of non-metallic ores, in particular to a high-temperature and high-pressure based double-spray-gun crushing device for non-metallic minerals.

Background

The non-metallic ore ultrafine grinding technology is a new mineral processing technology developed along with the development of modern high technology, new material industry, the technical progress of the traditional industry, the comprehensive utilization of resources and the like, and has important significance and influence on the development of new industry and the upgrading and adjustment of the structure of the traditional industry. The superfine non-metal mineral powder has the features of fine granularity, homogeneous quality and high surface activity, and has fast chemical reaction speed, great adsorption amount, great solubility, low sintering temperature and other performance. The demand of the global superfine non-metallic mineral powder material and the superfine non-metallic mineral powder product are rapidly increasing in recent 30 years. However, the traditional ultrafine grinding equipment such as an air flow mill, a mechanical impact type ultrafine mill, a stirring mill, a sand mill and the like cannot well protect mineral crystals, and the traditional ultrafine grinding equipment has general working efficiency, needs a large amount of operating cost and occupied area, and can generate environmental pollution problems such as mineral dust and the like.

The research shows that: the tensile strength of the solid binder is much smaller than the compressive strength, and the tensile strength of the non-metallic ore is dozens of times smaller than the compressive strength. The reason for this is that the inter-granular molecules tend to decrease with increasing load when the ore is in tension, and the inter-granular molecular forces tend to increase with increasing load when it is in compression. Particularly, the binding force is weak in the place where minerals and rocks are bound. Furthermore, the characteristic of small internal tension of the nonmetallic minerals along the grain boundaries can be utilized, and the fracture is easy to occur at the grain boundaries to separate the ores. This creates the advantage for the non-metallic mineral to be broken, which not only keeps the natural particle geometry, but also has better dissociation degree. Based on the analysis, the theoretical starting point of the nonmetal mineral double-spray-gun crushing device based on high temperature and high pressure designed at this time is standing. This design's two spray gun breaker simple structure, ore crushing efficiency is high to totally closed breakage has avoided flying upward of ore deposit dirt almost, still keeps the former crystal structure of ore, has avoided the overgrinding phenomenon, and the operation on next step of being convenient for more can reduce the investment, practices thrift area. Moreover, the double-spray gun crushing device designed at this time can more fully utilize crushing energy, improve crushing efficiency and increase crushing degree.

Disclosure of Invention

The invention aims to provide equipment capable of crushing superfine powder based on high temperature and high pressure, which is required to meet the crushing process of steam explosion, impact, collision and internal tension damage.

The technical scheme adopted by the invention for solving the technical problems is as follows: it includes pressure vessel, spray gun, reaction conduit, collection chamber 16, booster pump 5 and power controller 4, the corresponding position of the relative both sides wall of collection chamber 16 has respectively seted up the entry respectively with reaction conduit intercommunication, reaction conduit pass through the spray gun respectively with correspond pressure vessel intercommunication, pressure vessel communicates with booster pump 5 respectively, the spray gun is connected with power controller 4 respectively, the last feed inlet 8 that is provided with of pressure vessel, the pressure vessel below still is provided with heater 9 and heaies up for pressure vessel I11 and pressure vessel II 20.

An inlet at one side of the collecting chamber 16 is communicated with a reaction conduit I13, an inlet at the other side of the collecting chamber is communicated with a reaction conduit II 18, the other end of the reaction conduit I13 is communicated with a pressure container I11 through a spray gun I12, the other end of the reaction conduit II 18 is communicated with a pressure container II 20 through a spray gun II 19, the pressure container I11 and the pressure container II 20 are respectively communicated with a booster pump 5 through steam conduits, and the spray gun I12 and the spray gun II 19 are respectively connected with a power supply controller 4 through lines.

The spray gun is a rapid direct-acting electromagnetic valve and comprises an outer shell 21, coils 22, a fixed iron core 23, springs 24 and a movable iron core 25, wherein the fixed iron core 23 is fixed on the inner wall of the outer shell 21 and is connected with the movable iron core 25 through the springs 24, the coils 22 are arranged on two sides of the fixed iron core 23, the coils 22 are connected with a power supply controller 4 through a circuit, the movable iron core 25 is divided into more than 3 parts and combined to form a plug, and the power on and off of the coils 22 are used for controlling the parts of the movable iron core 25 to be away from or close to each other.

The fixed iron core 23 is ring-shaped, the movable iron core 25 is divided into more than 3 fan-shaped parts, the arc surface of each part is connected with a spring 24, and the fixed iron core 23 is connected with the inner ring wall of the fixed iron core 23 through the spring 24.

The sealing material is arranged on each surface of each part of the movable iron core 25 except for the arc-shaped surface.

The booster pump 5 is directly communicated with the inside of the pressure container through a steam guide pipe, so that the pressure container can be pressurized conveniently, and a steam valve is also arranged on the steam guide pipe to control the flow rate of steam in the steam guide pipe; the heater 9 is adopted to directly act on the pressure container, and the pressure gauge 7 is also arranged on the pressure container, so that the pressure change in the pressure container can be visually observed, and whether the booster pump 5 and the heater 9 continue to work or not is further determined.

Sealing materials are arranged at the feed inlet 8, the connection part of the pressure container and the spray gun, the connection part of the spray gun and the reaction conduit, the connection part of the reaction conduit and the collection chamber 16 and the interior of the spray gun.

The upper part of the collection chamber 16 is provided with a mesh screen 17, so that the air pressure in the collection chamber 16 can be ensured to be the same as the external atmospheric pressure, and meanwhile, the non-metal powder is prevented from floating out of the collection chamber.

The bottom of the collection chamber 16 is provided with a discharge opening 15, and a baffle 14 is arranged around the discharge opening 15 to form a funnel-shaped structure, so that the discharge is convenient.

After the spray gun is opened, the nonmetallic mineral powder continuously collides with each other in the reaction guide pipe and the collection chamber, so that the crushing of the nonmetallic minerals is further enhanced.

The invention has the beneficial effects that: simple structure, ore crushing efficiency is high to totally closed breakage has almost avoided flying upward of mine dust, still keeps the former crystal structure of ore, has avoided the phenomenon of overgrinding, and the operation on next step of being convenient for can also reduce the investment, practices thrift area, and collecting chamber of two spray gun devices sharing, non-metallic mineral powder continues collision each other in collecting chamber, more can make full use of crushing energy, improves crushing efficiency, increases crushing degree.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic view of the structure of the spray gun of the present invention.

FIG. 3 is a schematic view of the spray gun valve cartridge configuration of the present invention.

In the figure: the device comprises a steam guide pipe 1, a steam guide pipe 2, a steam valve 3, a power supply controller 4, a booster pump 5, a sealing plug 6, a pressure gauge 7, a feed inlet 8, a heater 9, a heating wire 10, a pressure container I, a spray gun I12, a reaction guide pipe I13, a baffle 14, a discharge outlet 15, a collection chamber 16, a mesh screen 17, a reaction guide pipe II 18, a spray gun II 19, a pressure container II 20, a pressure container II 21, an outer shell 22, a coil 23, a fixed iron core 24, a spring and a movable iron core 25.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

In embodiment 1, referring to fig. 1 to 3, the present invention includes a pressure vessel, a spray gun, a reaction conduit, a collection chamber 16, a booster pump 5 and a power controller 4, wherein corresponding positions of two opposite side walls of the collection chamber 16 are respectively provided with an inlet respectively communicated with the reaction conduit, the reaction conduit is communicated with the pressure vessel through the spray gun, the pressure vessel is respectively communicated with the booster pump 5, the spray gun is respectively connected with the power controller 4, the pressure vessel is provided with a feed inlet 8, and a heater 9 is further disposed below the pressure vessel to heat a pressure vessel i 11 and a pressure vessel ii 20. The specific connection mode is as follows: an inlet at one side of the collecting chamber 16 is communicated with a reaction conduit I11, an inlet at the other side of the collecting chamber is communicated with a reaction conduit II 18, the other end of the reaction conduit I13 is communicated with a pressure container I11 through a spray gun I12, the other end of the reaction conduit II 18 is communicated with a pressure container II 20 through a spray gun II 19, the pressure container I11 and the pressure container II 20 are respectively communicated with a booster pump 5 through steam conduits, the spray gun I12 and the spray gun II 19 are respectively connected with a power supply controller 4 through circuits, the reaction conduit I13 and the reaction conduit II 18 are respectively and correspondingly arranged at two sides of the collecting chamber, and after the spray gun I12 and the spray gun II 19 are simultaneously opened, nonmetal mineral powder from two opposite directions continuously collide with each other at sonic velocity and subsonic velocity in the collecting chamber 16, so that the crushing of the nonmetal minerals is further enhanced. The pressure container is provided with the feeding hole, so that the feeding is convenient, the structure of the device is simplified, and the working efficiency is improved.

Embodiment 2, referring to fig. 1 to 3, the spray gun is a fast direct-acting electromagnetic valve, and includes an outer casing 21, a coil 22, a fixed iron core 23, a spring 24, and a moving iron core 25, it should be noted that the outer casing includes a straight channel therein, and also includes an annular cavity perpendicular to the straight channel, and the valve core and the coil 3 are specifically disposed in the annular cavity. The fixed iron core 23 is fixed on the inner wall of the outer shell 21 and connected with the movable iron core 25 through the spring 24, the coils 22 are arranged on two sides of the fixed iron core 23, the coils 22 are connected with the power supply controller 4 through circuits, the movable iron core 25 is divided into more than 3 parts which are combined to form a plug, a straight channel can be plugged, the movable iron core 25 is specifically arranged at a communication part of the straight channel and the annular cavity, when the spring is stretched, all parts of the movable iron core 25 are mutually extruded to cut off the straight channel, and when the spring is contracted, all parts of the movable iron core 25 can be accommodated into the annular cavity. All surfaces of all parts of the movable iron core 25 except the arc-shaped surface are provided with sealing materials, so that the airtightness of the whole valve can be ensured. The switching on and off control of the coil 22 moves the various portions of the core 25 away from or toward each other. Specifically, it is the ring shape to set up fixed iron core 23, the design of ring both accords with the structural feature of pipeline, also can guarantee the good control to moving iron core, it is 3 above fan-shaped parts to move iron core 25 branch, a spring 24 is connected to the arcwall face of every part, be connected with the interior rampart of fixed iron core 23 through spring 24, when spring 24 contracts, can open the valve, the biggest opening and shutting degree of valve is not less than the internal diameter of pressure vessel I11 and pressure vessel II 20, the time greatly reduced that the valve was opened can be made in this kind of valve design, non-metallic mineral's crushing efficiency is improved. The outer casing 21 contains other devices of the spray gun inside, so that components inside the electromagnetic valve can be prevented from being in direct contact with the external environment, and the safety of the electromagnetic valve is guaranteed. The remainder being in accordance with any other embodiment or combination of 2 or more embodiments of the invention.

Embodiment 3, referring to fig. 1 to 3, a booster pump 5 directly communicates with the inside of a pressure vessel i 11 and the inside of a pressure vessel ii 20 through a steam conduit, so as to pressurize the pressure vessel, and the steam conduit is further provided with a steam valve to control the flow rate of steam in the steam conduit; the heater 9 is adopted to directly act on the pressure container, and the pressure gauge 7 is also arranged on the pressure container, so that the pressure change in the pressure container can be visually observed, and whether the booster pump 5 and the heater 9 continue to work or not is further determined. The remainder being in accordance with any other embodiment or combination of 2 or more embodiments of the invention.

Example 4 referring to fig. 1 to 3, the feed port 11, the connection between the pressure vessel and the lance, the connection between the lance and the reaction conduit, the connection between the reaction conduit and the collection chamber 16, and the interior of the lance are provided with sealing materials, and a large amount of sealing materials ensure good sealing of the entire lance device. The remainder being in accordance with any other embodiment or combination of 2 or more embodiments of the invention.

Example 5 referring to fig. 1 to 3, a mesh 17 is disposed on the upper portion of the collection chamber 16 to ensure that the pressure in the collection chamber 16 is the same as the external atmospheric pressure, and to prevent the non-metal powder from flowing out of the collection chamber. The remainder being in accordance with any other embodiment or combination of 2 or more embodiments of the invention.

Example 6, referring to fig. 1 to 3, a discharge opening 15 is formed at the bottom of the collection chamber 16, and baffles 14 are arranged around the discharge opening 15 to form a funnel-shaped structure, so that the discharge is facilitated. The remainder being in accordance with any other embodiment or combination of 2 or more embodiments of the invention.

Example 7 referring to fig. 1 to 3, the connection between the pressure vessel, the lance, the reaction conduit and the collection chamber is accomplished by bolts, and the bolts at the feed port 8, the bolts at the connection between the pressure vessel and the lance, the bolts at the connection between the lance and the reaction conduit, and the bolts at the connection between the reaction conduit and the collection chamber 16 ensure the safety of the lance device in a high-pressure working environment. The remainder being in accordance with any other embodiment or combination of 2 or more embodiments of the invention.

The working process of the invention comprises the steps of firstly opening the feeding holes of the pressure container I11 and the pressure container II 20, feeding nonmetallic minerals into the pressure container I11 and the pressure container II 20, and then closing the feeding holes by bolts and sealing materials. The booster pump 5 and the two steam valves are opened, steam enters the pressure container I11 and the pressure container II 20 through the steam guide pipe, the two heaters are opened simultaneously, the heating wires are used for heating the pressure container I11 and the pressure container II 20, and when pressure gauge data reach the specified crushing pressure, the two steam valves are closed. And (3) opening the power controller 4, enabling all parts of the movable iron cores in the spray guns I12 and II 7 to move towards the direction close to the fixed iron cores through the circuit, and opening the spray guns I6 and II 7. The non-metallic ore enters the reaction guide pipe I3 and the reaction guide pipe II 4 after the discharge spray gun I6 and the spray gun II 7 are opened, the non-metallic ore is burst, impacted and collided in the reaction guide pipe I3 and the reaction guide pipe II 4, then the non-metallic ore enters the collection chamber 16, two non-metallic ore powders from opposite directions in the collection chamber collide again at sound velocity and subsonic velocity, the crushing energy is fully utilized, and the crushing effect of the non-metallic ore is improved. And finally collecting the crushed non-metal mineral powder through a discharge opening 15.

In order to ensure that the action of opening a valve of a spray gun is maintained within a very short time, the electromagnetic valve with the movable iron core divided into four blocks is specially designed, the movable iron core is in a circular shape and is used as a plug and is arranged on the inner side of a fixed iron core distributed in an annular shape, four parts of the movable iron core are respectively connected with the fixed iron core through springs, and after a coil is electrified, the fixed iron core distributed in the annular shape is under the action of magnetic force to respectively pull the four parts of the movable iron core in respective directions. Therefore, the four parts of the movable iron core move away from each other at the same time, the opened valve is expanded from a small point to four sides, and the valve is completely opened in a very short time. When the valve is closed, the four parts of the movable iron core are mutually extruded together under the action of the spring to form a plug, and the sealing material on the movable iron core can ensure the tightness of the whole valve. The pressure gauge and the feed inlet are arranged on a pressure container, and the pressure container, the spray gun, the reaction conduit and the collection chamber are connected by bolts.

The protection scope of the present invention is not limited to the content of the technical solutions shown in any of the above embodiments, and is within the protection scope of the present invention as long as the communication or similar working principles of the present invention are adopted.

Claims

1. The utility model provides a two spray gun breaker of non-metallic mineral based on high temperature high pressure which characterized by: it includes pressure vessel, spray gun, reaction vessel, collection room (16), booster pump (5) and electrical source controller (4), the corresponding position of collecting room (16) relative both sides wall has respectively been seted up the entry and has been communicate with reaction vessel respectively, reaction vessel passes through the spray gun respectively with the pressure vessel intercommunication that corresponds, pressure vessel communicates with booster pump (5) respectively, the spray gun is connected with electrical source controller (4) respectively, the last feed inlet (8) that is provided with of pressure vessel, the pressure vessel below still is provided with heater (9) and heats up for pressure vessel, collection room (16) are put to two spray gun devices sharing, nonmetal powdered ore continues colliding each other in collection room (16), more can make full use of crushing energy, improve crushing efficiency, increase broken degree, the spray gun is a quick direct action formula solenoid valve, including shell body (21), coil (22), power controller (4), The power supply comprises a fixed iron core (23), a spring (24) and a movable iron core (25), wherein a straight channel and an annular cavity perpendicular to the straight channel are arranged in an outer shell (21), the valve core and the coil (22) are specifically arranged in the annular cavity, the fixed iron core (23) is annular and is fixed on the inner wall of the outer shell (21) and connected with the movable iron core (25) through the spring (24), the coils (22) are arranged on two sides of the fixed iron core (23), the coils (22) are connected with a power supply controller (4) through a circuit, the movable iron core (25) is divided into more than 3 parts and combined to form a plug, and the power on and off of the coils (22) controls the parts of the movable iron core (25) to be away from or close to each other.

2. The double-lance crushing device for nonmetallic minerals based on high temperature and high pressure as claimed in claim 1, wherein: an inlet at one side of the collecting chamber (16) is communicated with a reaction conduit I (13), an inlet at the other side is communicated with a reaction conduit II (18), the other end of the reaction conduit I (13) is communicated with a pressure container I (11) through a spray gun I (12), the other end of the reaction conduit II (18) is communicated with a pressure container II (20) through a spray gun II (19), the pressure container I (11) and the pressure container II (20) are respectively communicated with a booster pump (5) through steam conduits, and the spray gun I (12) and the spray gun II (19) are respectively connected with a power supply controller (4) through lines.

3. The double-lance crushing device for nonmetallic minerals based on high temperature and high pressure as claimed in claim 1, wherein: the fixed iron core (23) is annular, the movable iron core (25) is divided into more than 3 fan-shaped parts, the arc surface of each part is connected with a spring (24), and the fixed iron core is connected with the inner annular wall of the fixed iron core (23) through the spring (24).

4. The double-lance crushing device for nonmetallic minerals based on high temperature and high pressure as claimed in claim 1, wherein: sealing materials are arranged on the surfaces of all parts of the movable iron core (23) except the arc-shaped surface.

5. The double-lance crushing device for nonmetallic minerals based on high temperature and high pressure as claimed in claim 1, wherein: the booster pump (5) is directly communicated with the interiors of the pressure container I (11) and the pressure container II (20) through the steam guide pipe (1) so as to be convenient for pressurizing the pressure container, and the steam guide pipe (1) is also provided with a steam valve (3) to control the flow rate of steam in the steam guide pipe (1); the heater (9) is adopted to directly act on the pressure container, and the pressure gauge (7) is also arranged on the pressure container, so that the change of the pressure in the pressure container can be visually observed, and whether the booster pump (5) and the heater (9) continue to work or not is further determined.

6. The double-lance crushing device for nonmetallic minerals based on high temperature and high pressure as claimed in claim 1, wherein: sealing materials are arranged at the feed inlet (8), the connection part of the pressure container and the spray gun, the connection part of the spray gun and the reaction conduit, the connection part of the reaction conduit and the collection chamber (16) and the interior of the spray gun.

7. The double-lance crushing device for nonmetallic minerals based on high temperature and high pressure as claimed in claim 1, wherein: the upper part of the collection chamber (16) is provided with a mesh screen (17), so that the air pressure in the collection chamber (16) can be ensured to be the same as the external atmospheric pressure, and meanwhile, the non-metal powder is prevented from flying out of the collection chamber (16).

8. The double-lance crushing device for nonmetallic minerals based on high temperature and high pressure as claimed in claim 1, wherein: the bottom of the collecting chamber (16) is provided with a discharge opening (15), and baffles (14) are arranged around the discharge opening (15) to form a funnel-shaped structure, so that the discharging is convenient.

9. The double-lance crushing device for nonmetallic minerals based on high temperature and high pressure as claimed in claim 1, wherein: after the lance is opened, the non-metallic ore fines continue to collide with each other in the reaction conduit and the collection chamber (16), further enhancing the fragmentation of the non-metallic minerals.