CN116004977A

CN116004977A - Mineral powder continuous sintering equipment and segmented layered continuous sintering method thereof

Info

Publication number: CN116004977A
Application number: CN202211588419.4A
Authority: CN
Inventors: 张亚玉; 周圣芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-04-25

Abstract

The invention provides mineral powder continuous sintering equipment and a segmented layered continuous sintering method thereof, wherein the equipment structure comprises the following steps: the device comprises a flat annular rail, a sintering trolley, a fire grate driving gear, a sintering chamber, a cooling furnace, a swing type distribution system, a combustion system, a blast heat exchange system and a smoke exhaust purification system, wherein the fire grate driving gear is arranged at two ends of the flat annular rail, the sintering trolley is arranged in the flat annular rail, the sintering chamber, the cooling furnace, the swing type distribution system and the combustion system are arranged above the flat annular rail, and the blast heat exchange system and the smoke exhaust purification system are arranged below the flat annular rail. The sintering trolley with the U-shaped carriage baffle plate is adopted to form a groove-shaped sintering grate by self arrangement on the straight line section of the flat annular track, so that the loading capacity of sintering materials is improved, the unloading speed of clinker is improved, the use and maintenance cost is greatly reduced, the service life is prolonged, the automation level is improved, and the device has the excellent characteristics of good energy conservation, high efficiency, environmental protection and the like.

Description

Mineral powder continuous sintering equipment and segmented layered continuous sintering method thereof

Technical Field

The invention relates to the technical field of metallurgy, in particular to mineral powder continuous sintering equipment and a segmented layered continuous sintering method thereof.

Background

In the existing blast furnace ironmaking technology, iron ore is crushed and screened to obtain iron-rich mineral powder, the iron-rich mineral powder is sintered into sintered clinker through balling, the sintered clinker and coke are smelted in a blast furnace to prepare pig iron, the traditional production process of the sintered clinker is to make the concentrate powder into raw pellets through a balling machine, and then the raw pellets are sent into a chain type sintering furnace to be sintered at high temperature, and the calcination process of the chain type sintering furnace has the following defects in practical application: the raw materials are put on the chain grate once, and then are sintered through the semi-open type of fuel gas, because the thickness of the raw material layer is large, the sintering time is long, the heat loss is large, the fuel loss is large, the sintering speed is slow, the sintering quality is difficult to ensure, the concentration of carbon monoxide in the flue gas is high, the environmental pollution is serious, and more importantly, the chain grate is extremely easy to damage in the high-temperature sintering process, the use and maintenance cost is increased in the use process, and the production efficiency and the clinker sintering quality are also reduced.

Disclosure of Invention

The invention aims to provide tunnel type mineral powder sintering equipment and a tunnel type mineral powder sintering method.

The invention aims at realizing the following mode, namely tunnel type mineral powder sintering equipment, which structurally comprises the following components: the device comprises a flat annular rail, a sintering trolley, a fire grate driving gear, a sintering chamber, a preheating gas mixing chamber, a swinging type distribution system, a combustion system, a blast heat exchange system and a smoke exhaust purification system, wherein the fire grate driving gear is arranged at two ends of the flat annular rail, the sintering trolley is arranged in the flat annular rail, the sintering chamber, the preheating gas mixing chamber, the swinging type distribution system and the combustion system are arranged above the flat annular rail, and the blast heat exchange system and the smoke exhaust purification system are arranged below the flat annular rail.

A mineral powder continuous sintering equipment, swing formula cloth system comprises five main sets of material loading belt conveyors, swing belt cloth machine, storage silo at least, left side support post, right side support post, left transverse guide rail, right transverse guide rail, horizontal drive cylinder, longitudinal movement device, wherein, swing belt cloth machine both ends bottom is provided with left transverse guide rail and right transverse guide rail respectively, left transverse guide rail passes through left hollow shaft and is connected with left side support post top, right transverse guide rail bottom is provided with right hollow shaft and passes through longitudinal movement device and be connected with right side support post top, horizontal drive cylinder sets up in right transverse guide rail's both sides, main material loading belt conveyor is located swing belt cloth machine's top.

The mineral powder continuous sintering equipment is characterized in that a left hollow shaft seat is arranged at the top of a left supporting upright post, the lower part of a left hollow shaft is positioned at the center of the left hollow shaft seat, a left guide roller set is arranged at the upper part of the left hollow shaft, and a left transverse guide rail drives the whole swing belt distributor to move leftwards and rightwards along the guide direction of the left guide roller set; the top of the right support upright post is provided with a longitudinal guide rail, the top of the longitudinal guide rail is connected with a longitudinal roller wheel at the bottom of the right hollow shaft seat, the longitudinal roller wheel is connected with the bottom of the right hollow shaft seat through a roller shaft bracket, the right hollow shaft is positioned in the middle of the right hollow shaft seat, and the top of the right hollow shaft is connected with a right transverse guide rail.

The vertical moving device consists of a vertical roller, a speed reducer and a vertical driving motor, wherein the vertical roller shaft is connected with a vertical driving motor shaft part through the speed reducer, the vertical driving motor drives the vertical roller to drive a right hollow shaft seat to move integrally left and right, the top of the right hollow shaft is provided with a right guide roller set, the right guide roller set is connected with the bottom of a right transverse guide rail, one end of a transverse driving cylinder is connected with a right guide roller set fixing bracket, and the other end of the transverse driving cylinder is connected with a right transverse moving guide rail;

limiting reversing switches are arranged at two ends of the right transverse moving guide rail and the longitudinal guide rail, the limiting reversing switches control a longitudinal driving motor and a transverse driving cylinder to reversely drive the right end of the swing belt distributor to transversely and longitudinally swing, and the left end of each swing belt distributor transversely and longitudinally swings to uniformly distribute materials into corresponding storage bins below.

The continuous mineral powder sintering equipment is characterized in that rollers which roll in connection with the flat annular track are arranged at the bottom of the sintering trolley, U-shaped carriages are arranged at the upper part of the sintering trolley, the U-shaped carriages are spliced at straight sections of the flat annular track to form a groove-shaped sintering grate, and the roller wheel distance at the bottom of the sintering trolley is matched with the tooth distance of grate driving gears at two ends of the flat annular track.

The mineral powder continuous sintering equipment is characterized in that at least five pairs of preheating air mixing chambers and sintering chambers are alternately arranged on the straight-going section at the upper part of the flat annular track, a groove-shaped sintering grate is formed by splicing the sintering trolleys, the grooves penetrate through the lower parts of the preheating air mixing chambers and the sintering chambers under the guidance of the flat annular track, a storage bin is arranged above each preheating air mixing chamber, a lower material distribution opening of each storage bin is opposite to the upper part of the groove-shaped sintering grate at the inlet of each preheating air mixing chamber, each groove-shaped sintering grate passes through one inlet of the preheating air mixing chamber, and the material with set thickness is layered and paved above the groove-shaped sintering grate through the material distribution opening of the corresponding storage bin.

The mineral powder continuous sintering equipment is characterized in that a combustion system consists of a gas main pipe and a gas nozzle group, wherein the gas nozzle group is connected with the gas main pipe, and the gas nozzle group is arranged above each preheating gas mixing chamber.

The blast heat exchange system consists of a blast blower, a main air inlet pipe, an air inlet branch pipe, an air inlet cover, a main smoke exhaust pipe and a smoke exhaust branch pipe, wherein the main air inlet pipe is arranged at the center of the main smoke exhaust pipe, the blast blower is connected with the end part of the main air inlet pipe, and the air inlet branch pipe is connected with the main air inlet pipe.

A mineral powder continuous sintering equipment, a smoke exhaust purification system is formed by connecting a chimney, a draught fan, an electric dust collector, a cloth bag dust collector and a cyclone dust collector in series, a smoke inlet of the cyclone dust collector is communicated with a main smoke exhaust pipe through a pipeline, a smoke exhaust hood is arranged at the bottom of a sintering chamber, and the bottom of the smoke exhaust hood is communicated with the main smoke exhaust pipe through a smoke exhaust branch pipe.

The beneficial effects of the invention are as follows: the raw materials fall into the respective storage bins uniformly without accumulation under the swing type material distribution of at least five sets of swing type belt material distributors, at least five sets of storage bins are uniformly paved on the groove-shaped sintering grate in at least five layers, each layer of material distribution is added to be preheated and sintered at one time, the sintering speed and the sintering quality of clinker are improved greatly, the sintering temperature is also improved greatly, and the fuel consumption is reduced due to the fact that the sintering trolley with the U-shaped carriage baffle is adopted to be arranged into the groove-shaped sintering grate on the straight line section of the flat annular track, the loading capacity of the sintering materials is improved, the unloading speed of the clinker is improved, the use and maintenance cost is greatly reduced, the service life is prolonged, the automation level is improved, and the method has the excellent characteristics of being good in energy saving, high efficiency, environment friendliness and the like.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a continuous mineral powder sintering device.

Fig. 2 is a schematic structural view of a swing belt spreader.

Reference numerals illustrate: the device comprises a storage bin 1, a left support upright post 2, a left hollow shaft seat 3, a left hollow shaft 4, a left guide roller group 5, a left transverse guide rail 6, a swing belt distributor 7, a right hollow shaft seat 8, a right hollow shaft 9, a roller shaft bracket 10, a longitudinal roller 11, a longitudinal guide rail 12, a right guide roller group 13, a right longitudinal driving motor 14, a speed reducer 15, a right transverse guide rail 16, a right support upright post 17, a groove-shaped sintering grate 18, a transverse driving cylinder 19, a main feeding belt conveyor 20, a gas nozzle 21, a gas manifold 22, a grate driving gear 23, a sintering trolley 24, a flat annular guide rail 25, a preheating gas mixing chamber 26, a sintering chamber 27, an air inlet cover 28, a smoke collecting hood 29, a main smoke exhaust pipe 30, a main air inlet pipe 31, a discharge hopper 32, a blower 33, a cyclone 34, a bag dust collector 35, an electrostatic precipitator 36, an induced draft fan 37, a chimney 38, an air inlet branch 39 and a smoke exhaust branch 40.

Detailed Description

The apparatus and sintering method of the present invention will be described in detail below with reference to the accompanying drawings.

A mineral powder continuous sintering device structurally comprises: the device comprises a flat annular rail 25, a sintering trolley 24, a fire grate driving gear 23, a sintering chamber 27, a preheating air mixing chamber 26, a swinging type distribution system, a combustion system, a blast heat exchange system and a smoke exhaust purification system, wherein the fire grate driving gear 23 is arranged at two ends of the flat annular rail 25, the sintering trolley 24 is arranged in the flat annular rail 25, the sintering chamber 27, the preheating air mixing chamber 26, the swinging type distribution system and the combustion system are arranged above the flat annular rail 25, and the blast heat exchange system and the smoke exhaust purification system are arranged below the flat annular rail 25.

The continuous mineral powder sintering equipment is characterized in that the swing type material distribution system at least comprises five main sets of feeding belt conveyors, a swing belt material distributor 7, a storage bin 1, a left supporting upright 2, a right supporting upright 17, a left transverse guide rail 6, a right transverse guide rail 16, a transverse driving cylinder 19 and a longitudinal moving device, wherein the bottoms of two ends of the swing belt material distributor 7 are respectively provided with the left transverse guide rail 6 and the right transverse guide rail 16, the left transverse guide rail 6 is connected with the top of the left supporting upright 2 through a left hollow shaft 4, the bottom of the right transverse guide rail 16 is provided with a right hollow shaft 9 which is connected with the top of the right supporting upright 17 through a longitudinal moving device, the transverse driving cylinder 19 is arranged on two sides of the right transverse guide rail 16, and the main feeding belt conveyor 20 is positioned above the swing belt material distributor 7.

The mineral powder continuous sintering equipment is characterized in that the top of a left supporting upright post 2 is provided with a left hollow shaft seat 3, the lower part of a left hollow shaft 4 is positioned at the center of the left hollow shaft seat 3, the upper part of the left hollow shaft 4 is provided with a left guide roller set 5, and a left transverse guide rail 6 drives a swing belt distributor 7 to integrally move left and right along the guide direction of the left guide roller set 5; the top of the right support upright 17 is provided with a longitudinal guide rail 12, the top of the longitudinal guide rail 12 is connected with a longitudinal roller 11 at the bottom of the right hollow shaft seat 8, the longitudinal roller 11 is connected with the bottom of the right hollow shaft seat 8 through a roller shaft bracket 10, the right hollow shaft 9 is positioned in the middle of the right hollow shaft seat 8, and the top of the right hollow shaft 9 is connected with a right transverse guide rail 16.

The vertical moving device consists of a vertical roller 11, a speed reducer 15 and a vertical driving motor 14, wherein the shaft part of the vertical roller 11 is connected with the shaft part of the vertical driving motor 14 through the speed reducer 15, the vertical driving motor 14 drives the vertical roller 11 to drive the right hollow shaft seat 8 to move left and right integrally, the top of the right hollow shaft 9 is provided with a right guide roller group 13, the right guide roller group 13 is connected with the bottom of a right transverse guide rail 16, one end of a transverse driving cylinder 19 is connected with a fixed bracket of the right guide roller group 13, and the other end of the transverse driving cylinder 19 is connected with the right transverse moving guide rail 16;

limit reversing switches are arranged at two ends of the right transverse moving guide rail 16 and the longitudinal guide rail 12, the limit reversing switches control the longitudinal driving motor 14 and the transverse driving air cylinder 19 to reversely drive the right end of the swinging belt distributor 7 to transversely and longitudinally swing, and the left end of each swinging belt distributor 7 simultaneously transversely and longitudinally swings to uniformly distribute materials into the corresponding storage bin 1 below.

The bottom of the sintering trolley 24 is provided with rollers which are connected with the flat annular rail 25 for rolling, the upper part of the sintering trolley is provided with a U-shaped carriage, the U-shaped carriage is spliced at the straight section of the flat annular rail 25 to form the groove-shaped sintering grate 18, and the roller tread at the bottom of the sintering trolley 24 is matched with the tooth pitch of the grate driving gears 23 at the two ends of the flat annular rail 25.

The mineral powder continuous sintering equipment is characterized in that at least five pairs of preheating gas-mixing chambers 26 and sintering chambers 27 are arranged in a straight-going section at the upper part of a flat annular track 25, a groove-shaped sintering grate 18 formed by splicing sintering trolleys 24 is guided by the flat annular track 25 to pass through the lower parts of the preheating gas-mixing chambers 26 and the sintering chambers 27, a storage bin 1 is arranged above each preheating gas-mixing chamber 26, a material distribution opening at the lower end of the storage bin 1 is opposite to the upper part of the groove-shaped sintering grate 18 at the inlet of each preheating gas-mixing chamber 26, and the material with set thickness is layered and tiled above the groove-shaped sintering grate 18 through the material distribution opening of the corresponding storage bin 1 after each groove-shaped sintering grate 18 passes through the inlet of one preheating gas-mixing chamber 26.

The combustion system of the mineral powder continuous sintering equipment consists of a gas main pipe 22 and a gas spray head group 21, wherein the gas spray head group 21 is connected with the gas main pipe, and the gas spray head group 21 is arranged above each preheating gas mixing chamber 26.

The blast heat exchange system consists of a blast blower 33, a main air inlet pipe 31, an air inlet branch pipe 39, an air inlet cover 28, a main smoke exhaust pipe 30 and a smoke exhaust branch pipe 40, wherein the main air inlet pipe 31 is arranged at the center of the main smoke exhaust pipe 30, the blast blower 33 is connected with the end part of the main air inlet pipe 31, and the air inlet branch pipe 39 is connected with the main air inlet pipe 31.

The mineral powder continuous sintering equipment is characterized in that a smoke exhaust purification system consists of a chimney 38, a draught fan 37, an electric dust collector 36, a bag-type dust collector 35 and a cyclone dust collector 34 which are connected in series, a smoke inlet of the cyclone dust collector 34 is communicated with a main smoke exhaust pipe through a pipeline, a smoke exhaust cover 29 is arranged at the bottom of the sintering chamber 27, and the bottom of the smoke exhaust cover 29 is communicated with the main smoke exhaust pipe 30 through a smoke exhaust branch pipe 40.

Examples

The invention relates to a sectional layered continuous sintering method of mineral powder continuous sintering equipment, which comprises the following steps:

the method comprises the following steps that (1) main feeding belt conveyors are arranged above at least 5 sets of swing belt conveyors, raw materials are fed onto the swing belt conveyors by the main feeding belt conveyors, and blanking ends of the swing belt conveyors swing back and forth and left and right under the driving of transverse and longitudinal driving devices to uniformly feed the raw materials into storage bins for later use;

the sintering trolley on the oblate circular rail rotates clockwise under the drive of the grate driving gear, a U-shaped carriage at the upper part of the sintering trolley is spliced at the upper straight running section of the oblate circular rail to form a groove-shaped sintering grate, and a lower discharge hole of a first storage bin at the left end of the groove-shaped sintering grate uniformly spreads raw materials on the groove-shaped sintering grate according to the set thickness of a raw material layer under the control of an industrial computer;

when the groove-shaped sintering grate which is paved with the raw material layer continuously moves rightwards to enter the first sintering chamber, the smoke exhaust hood continuously burns from top to bottom in the sintering chamber under the action of negative pressure generated by exhaust of the induced draft fan, the smoke generated by combustion enters the smoke exhaust hood downwards, and then enters the smoke exhaust main pipe through the smoke exhaust branch pipe to be led to the smoke purification system, the carried heat of the high-temperature smoke entering the smoke main pipe is subjected to heat exchange with the cold air of the air inlet main pipe, the low-temperature smoke after heat exchange is led to the smoke purification system, and the hot air after heat exchange and temperature rise enters each preheating mixed chamber under the positive pressure of the air blower through the induced draft branch pipe;

step (4), when the trench-shaped sintering grate carries a first layer of clinker layer which is sintered and cured and passes through a second preheating gas mixing chamber to the right, a second storage bin is flatly paved on the first clinker layer according to a preset distribution thickness under the control of a computer, a second preheating gas mixing chamber blower blows preheated cold air upwards, simultaneously drives the heat of clinker sintered in the first combustion chamber to upwards, cools the clinker sintered in the first combustion chamber, simultaneously preheats blanking of the second preheating chamber, a gas nozzle above the kiln starts to spray gas, the gas and hot air blown by the blower are mixed to form combustible gas, an igniter ignites and burns the combustible gas, the combustible gas blown by the second preheating gas mixing chamber continues to burn from top to bottom in the second sintering chamber, smoke generated by burning enters a smoke exhaust pipe downwards, and then enters a smoke exhaust main pipe through a smoke exhaust pipe, the carried heat and the cold air of the air intake main pipe are subjected to heat exchange, the low-temperature air after heat exchange is sent into a smoke purification system, and the hot air after heat exchange is sent into each smoke gas mixing chamber under the pressurization of the kiln through a branch pipe;

and (5) when the first sintering trolley enters the flat annular track and moves rightwards to the rightmost end of the straight-going section at the upper part of the flat annular track, the raw materials layered and paved on the groove-shaped sintering grate in each storage bin are sintered and cured in a layered and segmented mode in each sintering chamber, the sintering trolley enters a grate driving gear at the right end of the flat annular track, a U-shaped carriage above the sintering trolley turns downwards along the tangent line of the grate driving gear, and clinker layered and cured in the U-shaped carriage of the sintering trolley falls into a clinker collecting hopper below under the action of gravity and is crushed by a crushing crusher and then sent to a blast furnace for standby.

Other than the technical features described in the specification, all are known to those skilled in the art.

Claims

1. A mineral powder continuous sintering device is characterized in that the device structure comprises: the device comprises a flat annular rail, a sintering trolley, a fire grate driving gear, a sintering chamber, a preheating gas mixing chamber, a swinging type distribution system, a combustion system, a blast heat exchange system and a smoke exhaust purification system, wherein the fire grate driving gear is arranged at two ends of the flat annular rail, the sintering trolley is arranged in the flat annular rail, the sintering chamber, the preheating gas mixing chamber, the swinging type distribution system and the combustion system are arranged above the flat annular rail, and the blast heat exchange system and the smoke exhaust purification system are arranged below the flat annular rail.

2. A continuous ore powder sintering apparatus according to claim 1, characterized in that: the swing type material distribution system at least comprises five sets of swing belt material distribution machines and a storage bin, wherein a left supporting upright post, a right supporting upright post, a left transverse guide rail, a right transverse guide rail, a transverse driving cylinder and a longitudinal moving device, the bottoms of two ends of the swing belt material distribution machines are respectively provided with a left transverse guide rail and a right transverse guide rail, the left transverse guide rail is connected with the top of the left supporting upright post through a left hollow shaft, the bottom of the right transverse guide rail is provided with a right hollow shaft which is connected with the top of the right supporting upright post through the longitudinal moving device, the transverse driving cylinder is arranged on two sides of the right transverse guide rail, and the main material feeding belt machine is positioned above the swing belt material distribution machines;

the top of the left supporting upright post is provided with a left hollow shaft seat, the lower part of the left hollow shaft is positioned in the center of the left hollow shaft seat, the upper part of the left hollow shaft is provided with a left guide roller set, and the left transverse guide rail drives the whole swing belt distributor to move leftwards and rightwards along the guide direction of the left guide roller set; the top of the right support upright post is provided with a longitudinal guide rail, the top of the longitudinal guide rail is connected with a longitudinal roller wheel at the bottom of the right hollow shaft seat, the longitudinal roller wheel is connected with the bottom of the right hollow shaft seat through a roller shaft bracket, the right hollow shaft is positioned in the middle of the right hollow shaft seat, and the top of the right hollow shaft is connected with a right transverse guide rail.

3. A continuous ore powder sintering apparatus according to claim 1, characterized in that: the longitudinal moving device consists of a longitudinal roller, a speed reducer and a longitudinal driving motor, wherein the longitudinal roller shaft is connected with a longitudinal driving motor shaft part through the speed reducer, the longitudinal driving motor drives the longitudinal roller to drive the whole right hollow shaft seat to swing longitudinally, the top of the right hollow shaft is provided with a right guide roller group, the right guide roller group is connected with the bottom of a right transverse guide rail, one end of a transverse driving cylinder is connected with a right guide roller group fixing bracket, and the other end of the transverse driving cylinder is connected with a right transverse moving guide rail;

the two ends of the right transverse moving guide rail and the two ends of the longitudinal guide rail are respectively provided with a limit reversing switch, the limit reversing switches control the longitudinal driving motor and the transverse driving air cylinder to reversely drive the right end of the swing belt distributor to transversely and longitudinally swing, and the left end of each swing belt distributor transversely swings simultaneously and rotates around the left hollow shaft to uniformly distribute materials into corresponding storage bins below.

4. A continuous ore powder sintering apparatus according to claim 1, characterized in that: the bottom of the sintering trolley is provided with rollers which roll in connection with the flat annular rail, the upper part of the sintering trolley is provided with U-shaped carriages, the U-shaped carriages are spliced at the straight line sections of the flat annular rail to form a groove-shaped sintering grate, and the roller tread at the bottom of the sintering trolley is matched with the tooth pitches of the grate driving gears at the two ends of the flat annular rail.

5. A continuous ore powder sintering apparatus according to claim 1, characterized in that: at least five pairs of preheating gas-mixing chambers and sintering chambers are alternately arranged on the straight-going section at the upper part of the flat annular track, the groove-shaped sintering fire grate is formed by splicing the sintering trolleys, the grooves are guided by the flat annular track to pass through the lower parts of the preheating gas-mixing chambers and the sintering chambers, storage bins are arranged above each preheating gas-mixing chamber, a lower-end material distribution opening of each storage bin is opposite to the upper part of the groove-shaped sintering fire grate at the inlet of each preheating gas-mixing chamber, and each groove-shaped sintering fire grate passes through one inlet of the preheating gas-mixing chamber, and the material with set thickness is layered and paved above the groove-shaped sintering fire grate through the corresponding material distribution opening of each storage bin.

6. A continuous ore powder sintering apparatus according to claim 1, characterized in that: the combustion system consists of a gas main pipe and a gas nozzle group, wherein the gas nozzle group is connected with the gas main pipe and is arranged above each preheating gas mixing chamber.

7. A continuous ore powder sintering apparatus according to claim 1, characterized in that: the blast heat exchange system consists of a blast blower, a main air inlet pipe, an air inlet branch pipe, an air inlet cover, a main smoke exhaust pipe and a smoke exhaust branch pipe, wherein the main air inlet pipe is arranged at the center of the main smoke exhaust pipe, the blast blower is connected with the end part of the main air inlet pipe, and the air inlet branch pipe is connected with the main air inlet pipe.

8. A continuous ore powder sintering apparatus according to claim 1, characterized in that: the smoke exhaust purification system consists of a chimney, a draught fan, an electric dust collector, a cloth bag dust collector and a cyclone dust collector which are connected in series, wherein a smoke inlet of the cyclone dust collector is communicated with a main smoke exhaust pipe through a pipeline, a smoke exhaust hood is arranged at the bottom of the sintering chamber, and the bottom of the smoke exhaust hood is communicated with the main smoke exhaust pipe through a smoke exhaust branch pipe.

9. The continuous sintering method for the mineral powder continuous sintering equipment in a segmented and layered manner according to claim 1, wherein the sintering steps are as follows:

the method comprises the following steps that (1) a main feeding belt conveyor is arranged above a first set of swinging belt distributor, raw materials are fed onto the first set of swinging belt distributor by the main feeding belt conveyor, and the blanking end of the first set of swinging belt distributor swings back and forth and left and right under the driving of a transverse and longitudinal driving device to uniformly feed the raw materials into a first storage bin for later use; after the first storage bin is fully filled with raw materials, the first set of swinging belt distributor returns to the center position, raw materials are fed onto the second set of swinging belt distributor, and the blanking end of the second set of swinging belt distributor swings back and forth and left and right under the drive of the transverse and longitudinal driving devices, so that the raw materials are uniformly fed into the second storage bin for standby; the swing type material distribution system sequentially and uniformly feeds raw materials into each storage bin for standby;

when the groove-shaped sintering grate which is paved with the raw material layer continuously moves rightwards to enter the first sintering chamber, the smoke exhaust hood continuously burns from top to bottom in the sintering chamber under the action of negative pressure generated by exhaust of the induced draft fan, the smoke generated by combustion enters the smoke exhaust hood downwards, further enters a smoke exhaust main pipe through a smoke exhaust branch pipe, the carried heat and cold air of the air intake main pipe are subjected to heat exchange, the low-temperature smoke after heat exchange is led to the smoke purification system, and the hot air after heat exchange and temperature rise enters each preheating gas mixing chamber through an induced air branch pipe under the pressurization of the air blower;

step (4), when the trench-shaped sintering grate carries a first layer of clinker layer which is sintered and cured and passes through a second preheating gas mixing chamber to the right, a second storage bin is flatly paved above the first clinker layer according to a preset distribution thickness under the control of a computer, a second preheating gas mixing chamber blower blows preheated cold air upwards, simultaneously drives the heat of clinker sintered in the first combustion chamber to upwards, cools the clinker sintered in the first combustion chamber, simultaneously preheats blanking of the second preheating chamber, a gas nozzle above the kiln starts to spray gas, the gas and hot air blown by the blower are mixed to form combustible gas, an igniter ignites the combustible gas to burn, the combustible gas blown by the second preheating gas mixing chamber continues to burn from top to bottom in the second sintering chamber, smoke generated by burning enters a smoke exhaust pipe downwards, and then enters a smoke exhaust main pipe through a smoke exhaust gas separation pipe, the carried heat and cold air of the air intake main pipe are subjected to heat exchange, and the cooled cold air subjected to heat exchange is sent into a purification system, and the smoke gas after heat exchange is preheated by the gas mixing chamber under the pressurization of the air through a branch pipe;