CN210001772U - suspension calcining and activating system suitable for clay mine tailings - Google Patents
suspension calcining and activating system suitable for clay mine tailings Download PDFInfo
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- CN210001772U CN210001772U CN201920284409.9U CN201920284409U CN210001772U CN 210001772 U CN210001772 U CN 210001772U CN 201920284409 U CN201920284409 U CN 201920284409U CN 210001772 U CN210001772 U CN 210001772U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The utility model discloses an suspension of suitable clay mine tailing calcines activation system, including drying breaker, whirlwind section of thick bamboo, second whirlwind section of thick bamboo, dore furnace, third whirlwind section of thick bamboo, fourth whirlwind section of thick bamboo, fifth whirlwind section of thick bamboo, sixth whirlwind section of thick bamboo, U type pipe and surge bin etc. wet material gets into drying breaker and is dried and break up by the high temperature flue gas that the second whirlwind section of thick bamboo came over, gets into whirlwind section of thick bamboo and carries out gas-solid separation, dry material gets into dore furnace calcination activation after the second whirlwind section of thick bamboo heat transfer separation, dore furnace export active material goes into the surge bin after carrying out tertiary suspension cooling, cooling air gets into dore furnace as combustion air from the U type pipe after the tertiary cooling heat transfer, the U type pipe can provide the cold air that the cooling needs and accept storage device as the interim hot material when the system collapses the material.
Description
Technical Field
The utility model relates to a suspension of suitable clay ore or clay tailings is calcined activation system belongs to and calcines technical field.
Background
In a scientific and technological route chart of energy conservation and emission reduction and environment-friendly development of the international cement industry, the application of an auxiliary cementing material to replace clinker is which is currently the three important technical approaches of low-carbon development of the internationally recognized cement industry2The current situation hinders the development of low-carbon cement, while the international cement market is still in a small growth trend from the overall development trend of the cement industry, the cement production capacity and yield of emerging markets which mainly comprise developing countries are vigorous, particularly south Asia, middle Asia, southeast Asia, Africa and south America regions are difficult to meet the requirements of infrastructure construction and urbanization development, the cement production capacity and yield are limited by the lag of the national economic and industrial development, the fly ash, the natural volcanic ash, the limestone powder and the like,The novel low-carbon cement prepared by calcining activated minerals by clay raw materials with wide storage and distribution of globally breaks through the technical bottleneck of the mixing amount of the traditional cement mixture on the premise of ensuring the performance of cement concrete, greatly replaces clinker, and greatly reduces the carbon emission of unit cement.
SUMMERY OF THE UTILITY MODEL
The invention aims to overcome the defects of high heat consumption, small scale and incapability of treating wet-discharge tailings in the conventional clay mineral calcining and activating technology, and the utility model aims to provide clay suspension calcining and activating systems which have low heat consumption and controllable activity, can treat dry clay raw materials and wet-discharge clay tailings and can be produced in a large scale.
The technical scheme is as follows: in order to achieve the above object, the utility model adopts the following technical scheme:
A suspension calcining and activating system suitable for clay mine tailings comprises a drying and breaking-up machine, a cyclone cylinder, a second cyclone cylinder, a decomposing furnace, a third cyclone cylinder, a fourth cyclone cylinder, a fifth cyclone cylinder, a sixth cyclone cylinder, a U-shaped pipe, a buffer bin and the like, clay minerals serving as raw materials enter the drying and breaking-up machine through a feeding device after being metered, an outlet of the drying and breaking-up machine is connected with an air inlet pipe of the cyclone cylinder, a hot air inlet of the drying and breaking-up machine is connected with an air outlet pipe of the second cyclone cylinder, an air outlet pipe of the cyclone cylinder is connected with a flue gas treatment system, a material outlet of the cyclone cylinder is connected with an air inlet pipe of the second cyclone cylinder, a material outlet of the second cyclone cylinder is connected with a material inlet of the decomposing furnace, an air outlet pipe at the top of the decomposing furnace is connected with an air inlet pipe of the third cyclone cylinder, an air inlet pipe at the bottom of the decomposing furnace is connected with an air outlet pipe of the fourth cyclone cylinder, an air outlet pipe of the third cyclone cylinder is connected with an air inlet pipe of the fifth cyclone cylinder, a material outlet pipe of the fourth cyclone cylinder is connected with an air inlet pipe, a material inlet pipe of the fifth cyclone cylinder is connected with an air inlet pipe of the fifth cyclone cylinder, a material inlet pipe of the fifth cyclone cylinder, and an air outlet pipe of the fifth cyclone cylinder are connected with a material inlet pipe of the fifth cyclone cylinder, and a material inlet pipe of the cyclone cylinder.
Preferably, the decomposing furnace comprises a gooseneck, a conical upper cylinder, a cylindrical middle cylinder and an inverted conical lower cylinder, burners are distributed on the inverted conical lower cylinder at a fixed angle of , the conical upper cylinder is communicated with a third cyclone air inlet pipe through the gooseneck, a discharging pipeline of the decomposing furnace is divided into two parts by header pipes and connected into the decomposing furnace, and feeding pipes are arranged at a fixed interval of from top to bottom.
Preferably, the bottom of the U-shaped pipe is provided with an air cannon, the lower part of the U-shaped pipe is provided with a gate valve, and the inner part of the U-shaped pipe is made of refractory materials. The inlet end of the U-shaped pipe is connected with the atmosphere, and the outlet end of the U-shaped pipe is connected with the sixth cyclone, so that the U-shaped pipe is mainly used for providing cold air required by cooling and serving as a temporary hot material receiving and storing device during system collapse. And an air cannon is arranged at the bottom of the U-shaped pipe and used for sweeping accumulated dust. The lower part of the U-shaped pipe is provided with a discharging device which can discharge the collected hot materials into a buffer bin.
Preferably, a water spraying system and a cold air valve are arranged in an air pipe between the second cyclone and the drying and scattering machine, and are mainly used for protecting the drying and scattering machine from cooling when the temperature of the incoming air is too high, and the drying and scattering machine can be a flash evaporation dryer, a V-shaped powder concentrator, a drying and scattering device such as a drying and breaking device and the like.
The working principle is that clay minerals serving as raw materials enter a drying and scattering device after being metered, are dried and scattered by high-temperature flue gas coming from a second cyclone cylinder and enter a cyclone cylinder along with an air flow for gas-solid separation, a gas-flue gas treatment system is used, dry materials collected by the cyclone cylinder enter an air inlet pipe (an air outlet pipe of a third cyclone cylinder) of the second cyclone cylinder from a blanking pipe at the lower part of the cyclone cylinder, are immediately dispersed and suspended in the air flow under the action of the air flow, the materials are subjected to full heat exchange and preheating with hot flue gas in a pipeline and then enter the second cyclone cylinder for gas-solid separation, the air outlet of the second cyclone cylinder is used as a drying and scattering machine, the preheated high-temperature materials at the lower part of the cyclone cylinder enter a decomposing furnace through the blanking pipe for calcination and activation, active materials at the outlet of the decomposing furnace enter the third cyclone cylinder along with the hot air flow for gas-solid separation, the solids enter a fourth cyclone cylinder, a fifth cyclone cylinder and a sixth cyclone cylinder for cooling, the materials after reaching the standards enter a buffer bin and are conveyed to a finished.
Has the advantages that: compared with the prior art, the utility model has the advantages of as follows:
1. the utility model discloses a set up the machine of breaing up of drying, the activation of adaptable different wet content clay mineral can effectively solve the trade and handle difficult problem to wet row's material. And the drying process is simple and quick, the heat efficiency is high, the disposal capacity is large, and the occupied area is small.
2. The utility model discloses from top to bottom set gradually preheating cyclone, calcination decomposing furnace and cooling cyclone, the material flows smoothly, and difficult jam, the material is in the suspended state in the system in the whole journey, and it is fast to have heat transfer rate, advantage that production efficiency is high, and the system takes up an area of fewly, and the investment is economized.
3. The utility model discloses set up feed divider and fuel equipartition device on the pan feeding device of dore furnace, can effective control dore furnace temperature stable, guarantee the effective combustion space of fuel and reduce NOx's emission.
4. The utility model discloses set up U type pipe and surge bin, can effectively prevent the material collapsing, the system has the advantage that technology is complete, safe and reliable, and does not increase any extra energy consumption.
5. The utility model relates to a rationally, provide kinds of gas-solid contact good, the material flows smoothly, the thermal efficiency is high, but the clay mineral calcination activation system that large-scale production, adaptability are strong, the product activity is controllable, of high quality, production efficiency is high, has better society and economic benefits.
Drawings
Fig. 1 is a schematic structural diagram of a system according to an embodiment of the present invention;
in the figure, a feeding device 1, a drying and scattering machine 2, a water spraying system 3, a cold air valve 4, an th cyclone 5, a th flap valve 6, a 7 th cyclone 8, a second flap valve 9, a decomposing furnace 10, a burner 11, a third cyclone 11, a 12 third flap valve 12, a 13 fourth cyclone 14, a fourth flap valve 14, a 15 fifth cyclone 15, a 16 fifth flap valve 17, a sixth cyclone 17, a grid wheel 18, a U-shaped pipe 19, an air cannon 20, a gate valve 21 and a buffer bin 22 are arranged.
Detailed Description
The invention will now be described in connection with the following figures and examples .
As shown in fig. 1, the suspension calcination activation system for kinds of suitable clay mine tailings disclosed in the embodiment of the present invention mainly includes a wet material feeding device 1, a drying and scattering machine 2, a water spraying system 3, a cold air valve 4, a th cyclone 5, a second cyclone 7, a decomposing furnace 9, a third cyclone 11, a fourth cyclone 13, a fifth cyclone 15, a sixth cyclone 17, a U-shaped pipe 20, a surge bin 22, and the like.
The wet material feeding device 1, the drying and scattering machine 2, the water spraying system 3, the cold air valve 4 and the cyclone 5 can form a raw material drying and scattering subsystem, the feeding device 1 can adopt a variable-frequency speed-regulating screw feeder which uniformly and quantitatively feeds materials into the drying and scattering machine 2, the materials are dried and scattered in the drying and scattering machine 2 by hot flue gas at the outlet of the second cyclone 7 and enter the cyclone 5 along with for gas-solid separation, gas (130-200 ℃) enters a waste gas treatment system, solid (100-200 ℃) enters an air inlet pipe of the second cyclone 7 through a discharge pipe at the lower part of the cyclone and a flap valve 6 for preheating, the water spraying system 3 and the cold air valve 4 are drying and scattering cooling emergency protection devices, and when the temperature of incoming air is too high or the raw material supply is cut off, the system is linked to spray water or mix cold air to cool the hot flue gas, and protect the drying and scattering devices and downstream equipment.
The second cyclone 7, the inlet and outlet flue gas pipeline and the discharge pipe thereof form a preheating subsystem, the discharge of the th cyclone 5 enters the connection ascending pipeline of the third cyclone 11 and the second cyclone 7 through the discharge pipe and the flap valve 6, and is dispersed in the connection ascending pipeline under the action of hot flue gas from the outlet of the third cyclone 11, the exchange is completed in a suspension state, the temperature (500-650 ℃) of the flue gas at the outlet of the second cyclone 7 is used as a drying heat source for the drying breaker, and the discharge (500-650 ℃) enters the decomposing furnace 9 through the discharge pipe and the flap valve 8.
The decomposing furnace 9, the third cyclone 11 and the burner 10 arranged on the cone part of the decomposing furnace form a calcining subsystem. The cone part of the decomposing furnace is connected with an air outlet pipe of the fourth cyclone 13, and the outlet of the decomposing furnace is connected with the inlet of the third cyclone 11. And reacting and activating the preheated raw materials in a decomposing furnace 9, controlling the temperature in the decomposing furnace to be 800-1000 ℃, keeping the temperature in the decomposing furnace for 2-8S, and allowing the reacted materials to enter a third cyclone 11 along with airflow to perform gas-solid separation. The fuel is injected into the decomposition furnace through the burner 10 arranged at a specific position of the cone portion of the decomposition furnace, and the dispersion of the fuel is effectively controlled by controlling the insertion angle and the horizontal cutting angle of the fuel to facilitate the combustion of the fuel. The decomposing furnace feeding device can effectively control the stability of the temperature in the decomposing furnace, ensure the effective combustion space of fuel and reduce the emission of NOx by arranging the material distribution.
The fourth cyclone 13, the flap valve 14, the fifth cyclone 15, the flap valve 16, the sixth cyclone 17 and the dividing wheel 18 below the decomposing furnace form a cooling subsystem. The air outlet pipe of the fifth cyclone 15 is connected with the air inlet pipe of the fourth cyclone 13, and the air outlet pipe of the sixth cyclone 17 is connected with the air inlet pipe of the fifth cyclone 15. Discharging materials after calcination enter a connecting ascending pipeline of the fifth cyclone 15 and the fourth cyclone 13 through a discharging pipe of the third cyclone 11 and a flap valve 12, the discharging materials are scattered by ascending airflow in the connecting ascending pipeline and carried to the fourth cyclone 13, the materials and the gas complete heat exchange in a suspension state, the materials are cooled, and the airflow is heated. And the gas at the outlet of the fourth cyclone 13 is heated to 500-600 ℃ and then enters the decomposing furnace as combustion air. The materials are cooled to 50-120 ℃ through three-stage cooling, and then enter the buffer bin 22 through the dividing wheel 18 until being conveyed to a finished product warehouse.
The U-shaped pipe 19, the air cannon 20, the gate valve 21 and the buffer bin 22 form an anti-collapse material subsystem, the outlet of the U-shaped pipe 19 is connected with the air inlet pipe of the sixth cyclone cylinder 17, the other end is connected with the atmosphere and mainly provides air required by cooling, the air cannon 20 is installed at the bottom of the U-shaped pipe, when accumulated materials exist in the U-shaped pipe, the air cannon can be opened to blow the U-shaped pipe, the U-shaped pipe is conveniently carried back to the cooling subsystem again, the gate valve 21 and the discharge pipe are arranged at the lower portion of the U-shaped pipe, and the discharge pipe is directly communicated with.
The preparation method of the activated clay using the suspension calcination activation system comprises the following steps: adding clay tailings with the particle size of 5-100 mu m and the water content of 2% -40% into a drying and scattering subsystem, after drying and scattering, entering a preheating subsystem for heat exchange, entering a calcining subsystem for calcining and activating, after cyclone separation, entering a cooling subsystem for tertiary cooling, entering a decomposing furnace of the calcining subsystem for combustion air by hot flue gas out of the cooling subsystem, and delivering the cooled material to a finished product warehouse for storage.
The utility model discloses can adapt to the powdery material of different moisture content, the suspension is preheated, the suspension is calcined and suspension cooling subsystem has guaranteed that system heat exchange efficiency is high, and the energy consumption is low, and the throughput is big. The stability of the temperature in the decomposing furnace can be effectively controlled by optimizing the spatial arrangement of the feeding and the fuel of the decomposing furnace, the effective space of fuel combustion and material activation calcination is ensured, and the system is low in NOx emission; the anti-collapse arrangement enables the system to have the advantages of complete process, safety and reliability, and no additional energy consumption is increased. The utility model discloses can scale, continuous high-efficient, safe and reliable be used for the activation of different moisture content clayey raw materials to calcine.
Claims (7)
- The suspension calcination activation system suitable for clay mine tailings is characterized by comprising a drying and scattering machine, a th cyclone cylinder, a second cyclone cylinder, a decomposing furnace, a third cyclone cylinder, a fourth cyclone cylinder, a fifth cyclone cylinder, a sixth cyclone cylinder, a U-shaped pipe and a buffer bin, wherein a feeding hole of the drying and scattering machine is connected with a wet material feeding device, an outlet of the drying and scattering machine is connected with an inlet of the th cyclone cylinder, a hot air inlet of the hot air is connected with an air outlet of the second cyclone cylinder, an air outlet pipe of the th cyclone cylinder is connected with a flue gas treatment system, a material outlet of the second cyclone cylinder is connected with an air inlet of the decomposing furnace, a gas outlet of the top of the decomposing furnace is connected with an air inlet pipe of the third cyclone cylinder, a gas inlet of the bottom of the decomposing furnace is connected with an air outlet pipe of the fourth cyclone cylinder, an air outlet of the third cyclone cylinder is connected with an air inlet of the second cyclone cylinder, a material outlet of the third cyclone cylinder is connected with an air inlet of the fourth cyclone cylinder, a material outlet of the fourth cyclone cylinder is connected with an air inlet of the fifth cyclone cylinder, a material outlet of the fifth cyclone cylinder is connected with an air inlet of the cyclone cylinder, a material outlet of the cyclone cylinder is connected with an air inlet of the fifth cyclone cylinder, a material inlet of the fifth cyclone cylinder, and a material inlet of the fifth cyclone cylinder is connected with a material inlet of the cyclone cylinder, and a material inlet of the fifth cyclone.
- 2. The system for suspension calcination activation of kinds of suitable clay mine tailings, according to claim 1, wherein the decomposition furnace comprises a gooseneck, a conical upper cylinder, a cylindrical middle cylinder and an inverted conical lower cylinder, and the burners of the decomposition furnace are arranged at an angle of on the inverted conical lower cylinder.
- 3. The system for suspension calcination activation of kinds of suitable clay mine tailings, according to claim 2, wherein the angle between adjacent burners is 90 ° or 180 °.
- 4. The system for suspension calcination and activation of kinds of clay mine tailings according to claim 1, wherein the feeding pipeline of the decomposing furnace is divided into two parts by main pipes connected to the material outlet of the second cyclone and connected to the decomposing furnace, and the two material inlets in the middle of the decomposing furnace are arranged at a certain distance of .
- 5. The suspension calcination and activation system for kinds of clay mine tailings according to claim 1, wherein an air cannon is installed at the bottom of the U-shaped pipe, a gate valve and a discharge pipe are arranged below the U-shaped pipe, and the discharge pipe is directly communicated with the surge bin.
- 6. The system for suspension calcination and activation of kinds of clay mine tailings according to claim 1, wherein a water spraying system and a cold air valve are arranged on an air pipe between the second cyclone and the drying and scattering machine.
- 7. The suspension calcination activation system for kinds of suitable clay mine tailings according to claim 1, wherein the drying and scattering machine is a flash dryer, a V-type powder concentrator or a drying crusher.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920284409.9U CN210001772U (en) | 2019-03-06 | 2019-03-06 | suspension calcining and activating system suitable for clay mine tailings |
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| CN201920284409.9U CN210001772U (en) | 2019-03-06 | 2019-03-06 | suspension calcining and activating system suitable for clay mine tailings |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109776002A (en) * | 2019-03-06 | 2019-05-21 | 中国中材国际工程股份有限公司 | A kind of the suspension calcining activation system and method for Suitable clays mine tailing |
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- 2019-03-06 CN CN201920284409.9U patent/CN210001772U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109776002A (en) * | 2019-03-06 | 2019-05-21 | 中国中材国际工程股份有限公司 | A kind of the suspension calcining activation system and method for Suitable clays mine tailing |
| CN109776002B (en) * | 2019-03-06 | 2024-01-19 | 中国中材国际工程股份有限公司 | Suspension calcination activation system and method suitable for clay mine tailings |
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