WO2021248659A1

WO2021248659A1 - Short-process integrated preparation system for fused ceramic particle

Info

Publication number: WO2021248659A1
Application number: PCT/CN2020/106131
Authority: WO
Inventors: 赵华星
Original assignee: 赵华星
Priority date: 2020-06-12
Filing date: 2020-07-31
Publication date: 2021-12-16
Also published as: CN111635237A

Abstract

A short-process integrated preparation system for a fused ceramic particle, comprising a calcining kiln (3), a transition hopper (8), a material distributing device (9), and a smelting furnace (10). The transition hopper (8) is arranged below the discharging port of the calcining kiln (3); the material distributing device (9) is arranged at the discharging port of the transition hopper (8); the discharging port of the material distributing device (9) is located in the smelting furnace (10). Raw materials from the calcining kiln (3) which are just calcined and are not cooled are directly and quickly fed into the smelting furnace (10) without being artificially and deliberately cooled. Thus, the technological process for preparing the fused ceramic particle is shortened, a cooling machine for cooling calcined materials, cooled material storage equipment and the like are omitted, the equipment investment is reduced, and the production field occupied by installation of production equipment is reduced; moreover, the physical heat of the calcined raw materials is fully utilized, and the calcined raw materials enter the smelting furnace (10) in a high-temperature state, thereby reducing the energy consumption in production, and reducing the comprehensive cost for preparing the fused ceramic particle.

Description

A short-process integrated preparation system for molten ceramic particles

Technical field

The invention relates to the technical field of molten ceramic particles, in particular to a short-process integrated preparation system for molten ceramic particles.

Background technique

The molten ceramic particles have round shape, low thermal expansion, wear resistance and corrosion resistance, and have been widely used in construction, road transportation, casting and other industries. The preparation process of molten ceramic particles is as follows: the raw materials are first melted, and compressed gas is used for blowing when the molten material is discharged from the furnace to break up the molten ceramic material, and the dispersed molten ceramic material is condensed under the action of surface tension. The ball forms solid ceramic particles under the violent cooling of the airflow and the environment.

The preparation of raw materials is the basis for the preparation of molten ceramic particles. Many raw materials for preparing molten ceramic particles need to be calcined before use to remove organic matter, moisture or decompose some minerals, so as to obtain the mineral components required for artificial synthesis of ceramic particles. For example, kaolin minerals are obtained by calcining coal-based kaolin, and coke gemstones are calcined at high temperature to obtain coke gemstone clinker with stable volume, high strength, water absorption, and low porosity.

The existing process for preparing molten ceramic particles is usually to calcinate the raw materials first, and then cool the calcined material to room temperature and then send it to a furnace for melting.

To cool the calcined raw materials, on the one hand, equipment and devices such as a cooler and material storage after cooling are required, which increases equipment investment. On the other hand, the installation of equipment requires a certain production site and production space, which increases the production site and production. The space occupancy rate, and secondly, the physical heat of the raw materials after calcination is wasted in the process of cooling from the calcination temperature to room temperature, which increases the energy consumption of the molten ceramic particle manufacturing process and increases the overall cost of the molten ceramic particle preparation , Affecting the popularization and application of molten ceramic particles.

Summary of the invention

The purpose of the present invention is to provide a short-process integrated preparation system for molten ceramic particles.

In order to solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

A short-process integrated preparation system for molten ceramic particles, including a calcining kiln for calcining raw materials, a transition hopper, a distributor, and a furnace for melting calcined raw materials;

The calcining kiln is inclined downward in a direction from the inlet of the calcining kiln to the outlet of the calcining kiln, and the height of the inlet of the calcining kiln is higher than that of the outlet of the calcining kiln. high;

The transition hopper is arranged below the discharge port of the calcining kiln, for the calcined raw materials to fall into the lower transition hopper after coming out of the discharge port of the calcining kiln;

The discharging port of the transition hopper is provided with a distributor for discharging and distributing materials;

The discharge port of the distributor is located in the melting furnace for evenly distributing the calcined raw materials stored in the transition hopper in the melting furnace.

Preferably, a kiln head cover is provided at the inlet of the calcining kiln, and a kiln tail cover is provided at the outlet of the calcining kiln.

Preferably, the furnace is provided with a flue gas pipe for discharging the flue gas in the furnace, the air inlet of the flue gas pipe is in communication with the hearth of the furnace, and the air outlet of the flue gas pipe is connected to the kiln tail. The hood is connected for the flue gas generated in the melting process to enter the kiln tail hood through the flue gas pipe.

Preferably, a first air suction port is provided on the kiln head cover, and the first air suction port communicates with the air intake of the tail gas treatment system through a pipe;

The kiln tail cover is provided with a second air inlet, and the second air inlet is communicated with the air inlet of the tail gas treatment system through a pipe;

When the raw material for preparing molten ceramic particles contains combustible components, close the first suction port and open the second suction port. The flue gas generated by calcination flows from the inlet of the calcining kiln to the outlet and finally enters the kiln tail hood. , The flue gas generated in the melting process enters the kiln tail hood through the flue gas pipeline, and finally the flue gas in the kiln tail hood is sent to the tail gas treatment system through the second suction port for tail gas purification treatment;

When the raw material for preparing molten ceramic particles does not contain combustible components, the second suction port is closed and the first suction port is opened. The flue gas generated during the melting process enters the kiln tail hood through the flue gas pipe and then enters the calcining kiln to melt The flue gas generated during the process and the flue gas generated during the calcination process flow together from the discharge port of the calcining kiln to the inlet and finally enter the kiln head cover. The flue gas in the kiln head cover is sent to the tail gas from the first suction port The treatment system performs exhaust gas purification treatment.

Preferably, a valve is provided on the flue gas pipe to control the opening degree of the flue gas pipe, so that high negative pressure is not generated in the furnace, and dust is not generated when the furnace is working.

This application provides a short-process integrated preparation system for molten ceramic particles, including a calcining kiln, a transition hopper, a distributor, and a melting furnace;

The discharge port of the distributor is located in the furnace, so as to evenly distribute the calcined raw materials stored in the transition hopper in the furnace;

In this application, the raw materials that have just been calcined and have not been cooled from the calcining kiln directly fall into the transition hopper, and then the calcined raw materials that are still in a high temperature and hot state in the transition hopper are evenly distributed in the furnace by the distributor. The raw materials that have just been calcined and have not been cooled from the calcining kiln are sent directly, quickly, and without artificial cooling into the furnace;

This shortens the process flow of the preparation of molten ceramic particles, reduces the equipment and devices used for the cooling of the calcined material, and the storage of materials after cooling, reduces the equipment investment, reduces the production site and space occupied by the installation of production equipment, and reduces The occupancy rate of the production site and production space is reduced, and the investment in production equipment is ultimately reduced. At the same time, the physical heat of the calcined raw materials is fully utilized. The calcined raw materials still enter the furnace in a high temperature and hot state, which reduces the production energy consumption , Which reduces the overall cost of preparing molten ceramic particles.

Description of the drawings

1 is a schematic structural diagram of a short-process integrated preparation system for molten ceramic particles according to an embodiment of the present invention;

In the picture: 1 first suction port, 2 kiln head cover, 3 calcining kiln, 4 second suction port, 5 kiln tail cover, 6 flue gas pipe, 7 valve, 8 transition hopper, 9 distributor, 10 furnace, 11 view Fire hole, 12 electrodes, 13 molten pool, 14 discharge pipe, 15 injection pipe, 16 view fire hole cover.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "axial", "radial", "longitudinal", "transverse", "length", "width", "upper", "lower" , "Front", "Back", "Left", "Right", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Vertical", "Horizontal" The orientation or positional relationship indicated by "" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation and specific orientation. The azimuth structure and operation of, therefore cannot be understood as a limitation of the present invention.

In the present invention, unless otherwise clearly defined and defined, the first feature is "on" or "under" the second feature, which may include direct contact between the first and second features, or may include the first and second features. The features are not in direct contact but through other features between them. Moreover, "above", "above", and "above" the first feature of the second feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than that of the second feature. The “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and diagonally below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

As shown in FIG. 1, FIG. 1 is a schematic structural diagram of a short-process integrated preparation system for molten ceramic particles according to an embodiment of the present invention. Figure 1 includes: first suction port 1, kiln head cover 2, calcining kiln 3, second suction port 4, kiln tail cover 5, flue gas pipe 6, valve 7, transition hopper 8, distributor 9, furnace 10, Fire viewing hole 11, electrode 12, molten pool 13, discharge pipe 14, blowing pipe 15, and fire viewing hole cover 16.

This application provides a short-process integrated preparation system for molten ceramic particles, including a calcining kiln 3 for calcining raw materials, a transition hopper 8, a distributor 9 and a melting furnace 10 for melting the calcined raw materials;

The calcining kiln 3 is inclined downward in the direction from the inlet of the calcining kiln 3 to the outlet of the calcining kiln 3, and the height of the inlet of the calcining kiln 3 is higher than that of the calcining kiln 3. The height of the discharge port;

The transition hopper 8 is arranged below the discharge port of the calcining kiln 3 for the calcined raw materials to fall into the lower transition hopper 8 after coming out of the discharge port of the calcining kiln 3;

The discharging port of the transition hopper 8 is provided with a distributor 9 for discharging and distributing materials;

The discharge port of the distributor 9 is located in the melting furnace 10 for evenly distributing the calcined raw materials stored in the transition hopper 8 in the melting furnace 10.

In an embodiment of the present application, a kiln head cover 2 is provided at the inlet of the calcining kiln 3, and a kiln tail cover 5 is provided at the outlet of the calcining kiln 3.

In an embodiment of the present application, the melting furnace 10 is provided with a flue gas duct 6 for discharging the flue gas in the melting furnace 10, and the air inlet of the flue gas duct 6 is in communication with the furnace chamber of the melting furnace 10, The air outlet of the flue gas pipe 6 is in communication with the kiln tail cover 5 for the flue gas generated in the melting process to enter the kiln tail cover 5 through the flue gas pipe 6.

In an embodiment of the present application, the kiln head cover 2 is provided with a first suction port 1, and the first suction port 1 is in communication with the gas inlet of the exhaust gas treatment system through a pipe;

The kiln tail cover 5 is provided with a second air inlet 4, and the second air inlet 4 communicates with the air inlet of the tail gas treatment system through a pipe;

When the raw material for preparing molten ceramic particles contains combustible components (combustible components such as carbon), the first air suction port 1 is closed and the second air suction port 4 is opened, and the flue gas generated by calcination is discharged from the inlet of the calcining kiln 3. The material port flows and finally enters the kiln tail hood 5. The flue gas generated during the melting process enters the kiln tail hood 5 through the flue gas pipe 6, and finally the flue gas in the kiln tail hood 5 is sent to the tail gas treatment by the second suction port 4 Exhaust gas purification treatment is carried out in the system; at this time, the second suction port 4 sucks in the air, which induces the air to enter the calcining kiln 3 from the feed port on the kiln head cover 2 along with the materials, so as to provide sufficient oxygen for the combustion of combustible materials in the raw materials, and finally All combustible substances in the material are burned, and the smoke produced by the combustion is discharged from the second suction port 4;

When the raw material for preparing molten ceramic particles does not contain combustible components (combustible components such as carbonaceous), the second suction port 4 is closed and the first suction port 1 is opened, and the flue gas generated during the melting process enters the kiln through the flue gas duct 6 The tail hood 5 then enters the calcining kiln 3. The flue gas generated in the melting process and the flue gas generated in the calcination process are mixed and flow from the discharge port of the calcining kiln 3 to the feed port and finally enter the kiln head cover 2. The flue gas in the kiln head cover 2 is sent from the first suction port 1 to the tail gas treatment system for tail gas purification treatment; at this time, the hot air flows to the feed inlet, and the hot air can preheat the materials, thereby improving the thermal efficiency of the calcining kiln 3.

In an embodiment of the present application, a valve 7 is provided on the flue gas pipe 6 to control the opening degree of the flue gas pipe 6, so that no high negative pressure is generated in the furnace 10, and the furnace 10 is working at the same time. There is no dust at all times.

In this application, the materials to be calcined are sent from the kiln head cover 2 to the calcining kiln 3, and are discharged from the kiln tail cover 5 after being preheated and calcined in the kiln and fall into the transition hopper 8;

The calcined raw materials are fed into the furnace 10 by the distributor 9 and uniformly distributed;

The distance between the electrodes 12 is controlled to form a stable arc between the electrodes 12, the arc melts the material, and the molten ceramic material forms a resistance between the electrodes 12, thus generating a part of resistance heat, which further promotes the melting and melting of the ceramic material Increase in material temperature;

The molten ceramic material forms a molten pool 13 in the melting furnace 10, so that the temperature and composition of the molten material are further uniform; the molten material is controlled to be discharged from the discharge pipe 14, and the molten material is sprayed through the injection pipe 15; in the role of compressed gas When the molten material is broken up, numerous small droplets are formed. The droplets shrink into a sphere under the action of surface tension, and form solid ceramic particles under the action of the airflow and the violent cooling of the environment;

The kiln head cover 2, the calcining kiln 3, the kiln tail cover 5, the transition hopper 8, the distributor 9 and the furnace 10 form a closed and connected system, allowing the flow of materials from the calcining kiln 3 to the melting furnace 10, reducing heat loss Loss, to maximize the use of the physical heat of the ceramic material after calcination, while reducing the heat loss of the ceramic material during the melting process;

The valve 7 is used to control the opening degree of the flue gas pipe 6, so that high negative pressure is not generated in the furnace 10, and the furnace 10 does not generate dust when it is working;

The fire observation hole 11 is used to observe the melting status of the materials in the furnace 10, and can be used as an operation hole for eliminating the swelling in the furnace; opening the fire observation hole cover 16 can be used to observe the fire or eliminate the swelling in the furnace, and the observation or operation is completed After that, the fire hole cover 16 should be closed.

This application provides a short-process integrated preparation system for molten ceramic particles, including a calcining kiln 3, a transition hopper 8, a distributor 9 and a melting furnace 10;

The discharge port of the distributor 9 is located in the melting furnace 10 for evenly distributing the calcined raw materials stored in the transition hopper 8 in the melting furnace 10;

In this application, the raw materials that have just been calcined and have not been cooled from the calcining kiln 3 fall directly into the transition hopper 8, and then the calcined raw materials that are still in a high temperature and hot state in the transition hopper 8 are evenly distributed by the distributor 9 In the melting furnace 10, the raw materials that have just been calcined and have not been cooled that will come out of the calcining kiln 3 are directly, quickly, and not artificially cooled into the melting furnace 10;

This shortens the process flow of the preparation of molten ceramic particles, reduces the equipment and devices used for the cooling of the calcined material, and the storage of materials after cooling, reduces the equipment investment, reduces the production site and space occupied by the installation of production equipment, and reduces The occupancy rate of the production site and production space is reduced, and the investment in production equipment is ultimately reduced. At the same time, the physical heat of the calcined raw materials is fully utilized. It reduces the overall cost of preparing molten ceramic particles.

The methods and devices that are not described in detail in the present invention are all prior art and will not be described in detail.

Specific examples are used in this article to describe the principle and implementation of the present invention. The description of the above examples is only used to help understand the method and core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

A short-process integrated preparation system for molten ceramic particles, which is characterized by comprising a calcining kiln for calcining raw materials, a transition hopper, a distributor, and a melting furnace for melting calcined raw materials;

The calcining kiln is inclined downward in a direction from the inlet of the calcining kiln to the outlet of the calcining kiln, and the height of the inlet of the calcining kiln is higher than that of the outlet of the calcining kiln. high;

The transition hopper is arranged below the discharge port of the calcining kiln, for the calcined raw materials to fall into the lower transition hopper after coming out of the discharge port of the calcining kiln;

The discharging port of the transition hopper is provided with a distributor for discharging and distributing materials;

The discharge port of the distributor is located in the melting furnace for evenly distributing the calcined raw materials stored in the transition hopper in the melting furnace.
A short-process integrated preparation system for molten ceramic particles according to claim 1, wherein a kiln head cover is provided at the inlet of the calcining kiln, and a kiln head cover is provided at the outlet of the calcining kiln. Kiln tail cover.
A short-process integrated preparation system for molten ceramic particles according to claim 2, wherein the furnace is provided with a flue gas pipe for discharging the flue gas in the furnace, and the inlet of the flue gas pipe The gas port is connected with the furnace chamber of the melting furnace, and the gas outlet of the flue gas pipe is connected with the kiln tail cover for the flue gas generated in the melting process to enter the kiln tail cover through the flue gas pipe.
A short-process integrated preparation system for molten ceramic particles according to claim 3, wherein a first suction port is provided on the kiln head cover, and the first suction port is connected to the tail gas treatment system through a pipe The air inlet is connected;

The kiln tail cover is provided with a second air inlet, and the second air inlet is communicated with the air inlet of the tail gas treatment system through a pipe;

When the raw material for preparing molten ceramic particles contains combustible components, close the first suction port and open the second suction port. The flue gas generated by calcination flows from the inlet of the calcining kiln to the outlet and finally enters the kiln tail hood. , The flue gas generated in the melting process enters the kiln tail hood through the flue gas pipeline, and finally the flue gas in the kiln tail hood is sent to the tail gas treatment system through the second suction port for tail gas purification treatment;

When the raw material for preparing molten ceramic particles does not contain combustible components, the second suction port is closed and the first suction port is opened. The flue gas generated during the melting process enters the kiln tail hood through the flue gas pipe and then enters the calcining kiln to melt The flue gas generated during the process and the flue gas generated during the calcination process flow together from the discharge port of the calcining kiln to the inlet and finally enter the kiln head cover. The flue gas in the kiln head cover is sent to the tail gas from the first suction port The treatment system performs exhaust gas purification treatment.
A short-process integrated preparation system for molten ceramic particles according to claim 3, wherein a valve is provided on the flue gas pipe to control the opening degree of the flue gas pipe so that there is no High negative pressure is generated, and the furnace does not generate dust when it is working.