CN216174217U

CN216174217U - Efficient submerged arc furnace flue gas micro silicon powder recovery system

Info

Publication number: CN216174217U
Application number: CN202122524328.1U
Authority: CN
Inventors: 刘兴旺; 陈天诸
Original assignee: Xinjiang Minwang Silicon Industry Co ltd
Current assignee: Xinjiang Minwang Silicon Industry Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-04-05
Anticipated expiration: 2031-10-20

Abstract

The utility model discloses a high-efficiency submerged arc furnace flue gas micro silicon powder recovery system which comprises a submerged arc furnace, an exhaust-heat boiler, a micro silicon powder separator, a negative pressure fan and a bag-type dust remover, wherein the submerged arc furnace, the exhaust-heat boiler, the micro silicon powder separator, the negative pressure fan and the bag-type dust remover are sequentially connected, a flue gas channel is arranged in the exhaust-heat boiler, and a steel ball collecting device is arranged at the bottom of the flue gas channel.

Description

Efficient submerged arc furnace flue gas micro silicon powder recovery system

Technical Field

The utility model relates to the technical field of waste heat boilers, in particular to a high-efficiency submerged arc furnace flue gas micro silicon powder recovery system.

Background

The ferrosilicon smelting smoke dust is considered to be smoke dust which seriously pollutes the environment, the submerged arc furnace for smelting ferrosilicon is generally divided into three furnace types, the first type is a fully-closed type, the second type is a semi-closed type with a short smoke hood, and the third type is an open type with a high smoke hood. The semi-closed furnace has large smoke volume, is suitable for heat exchange power generation by adopting a waste heat boiler, has the thermal efficiency of about 26-28 percent, but has the difficulty that the diameter of most dust in the smoke is 0.1-0.5 um, and the particles have different cohesiveness in different temperature areas and humidity and are very easy to adhere to the surfaces of a chimney, a flue and a metal pipe, so that the heat exchange efficiency of a heat exchange surface is reduced sharply. The publication number of the steel ball dust removal type submerged arc furnace waste heat boiler published by the Chinese intellectual property office is CN 101701775A. The utility model adopts a steel ball scattering device arranged at the top of a furnace, a steel ball separating and collecting device is arranged below an ash hopper at the bottom of the furnace, the steel ball separating and collecting device conveys the collected steel balls to a steel ball conveying hopper, then the steel ball conveying hopper filled with the steel balls is conveyed to the upper part of the steel ball scattering device through a circulating type steel ball mechanical conveying device, the steel balls are poured into the steel ball scattering device through the steel ball conveying hopper through a mechanical unloading catch wheel, the steel ball scattering device scatters the steel balls into a submerged arc furnace waste heat boiler, and thus the dust removal is realized by knocking a heating surface through the steel balls with kinetic energy. However, this invention has the following disadvantages: the steel ball separating and collecting device has poor separating effect on dust and steel balls, and the dust removal efficiency is not high.

Therefore, a high-efficiency submerged arc furnace flue gas micro silicon powder recovery system is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-efficiency submerged arc furnace flue gas micro silicon powder recovery system to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-efficiency recovery system for micro silicon powder in flue gas of a submerged arc furnace comprises the submerged arc furnace, a waste heat boiler, a micro silicon powder separator, a negative pressure fan and a bag-type dust remover, the submerged arc furnace, the waste heat boiler, the micro silicon powder separator, the negative pressure fan and the bag-type dust remover are connected in sequence, a flue gas channel is arranged in the waste heat boiler, a steel ball collecting device is arranged at the bottom of the flue gas channel, the steel ball collecting device comprises a separating mechanism and a recovering mechanism, the separating mechanism is used for separating the steel balls from the silicon powder, the recovery mechanism is used for recovering steel balls, the separation mechanism comprises a main body, the main body is cylindrical, the upper end and the lower end of the main body are respectively in an opening shape, the side wall of the main body is provided with micropores, the inside of the main body is provided with spiral fan blades, the outer surface cover of main part is equipped with the negative pressure chamber, the negative pressure chamber with the coaxial setting of main part, the lateral wall in negative pressure chamber runs through and is equipped with the breathing pipe.

Preferably, retrieve the mechanism including storing the chamber, the main part runs through the setting and is in store the last lateral wall in chamber, store the circular cavity of bottom fixedly connected with in chamber, circular cavity with store the chamber intercommunication, the inside of circular cavity rotates and is equipped with the carousel, the carousel with the coaxial setting of circular cavity, just the surface of carousel with the inner peripheral surface of circular cavity is evenly laminated, the lateral wall of carousel is equipped with logical groove, the bottom of circular cavity is equipped with the opening, be equipped with the drive on the circular cavity carousel pivoted actuating mechanism.

Preferably, spiral fan blade fixed connection is in the pivot, the pivot with the main part is coaxial to be set up, the inside of storing the chamber is equipped with the sleeve, the pivot is rotated and is connected on the sleeve, telescopic bottom fixedly connected with drive pivot pivoted driving motor.

Preferably, actuating mechanism include with the connecting rod of the coaxial setting of carousel, the connecting rod runs through the first running roller of the terminal surface fixedly connected with of circular cavity, the first bevel gear of outer peripheral face fixedly connected with of pivot, the lateral wall of storing the chamber runs through and is equipped with the dwang, the one end fixedly connected with second bevel gear of dwang, second bevel gear with first bevel gear meshing, the other end fixedly connected with second running roller of dwang, first running roller with through belt transmission between the second running roller.

Preferably, the end face of the spiral fan blade is provided with micropores.

Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a hot stove flue gas silica fume recovery system in high-efficient ore deposit, through setting up the main part, the steel ball gets into the inside back of main part, and the rotation falls into inside the recovery mechanism under the effect of the inside spiral flabellum of main part, and this in-process produces the collision, shakes the silica flour and falls, and simultaneously under centrifugal force, silica flour gets into the negative pressure chamber by the micropore on the main part lateral wall, and the negative pressure chamber passes through the breathing pipe and connects the aspiration pump and produce the negative pressure, further with silica flour suction, accomplish the separation of steel ball and silica flour, and the separation is effectual and efficient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the turntable structure of the present invention;

fig. 3 is a schematic front sectional view of the present invention.

In the figure: 1-main body, 2-spiral fan blade, 3-negative pressure cavity, 4-air suction pipe, 5-storage cavity, 6-circular cavity, 7-rotary table, 8-through groove, 9-opening, 10-rotating shaft, 11-sleeve, 12-driving motor, 13-first roller, 14-first bevel gear, 15-second bevel gear, 16-second roller and 17-belt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a high-efficiency submerged arc furnace flue gas micro silicon powder recovery system comprises a submerged arc furnace, a waste heat boiler, a micro silicon powder separator, a negative pressure fan and a bag-type dust remover, wherein the submerged arc furnace, the waste heat boiler, the micro silicon powder separator, the negative pressure fan and the bag-type dust remover are sequentially connected, a flue gas channel is arranged in the waste heat boiler, a steel ball collecting device is arranged at the bottom of the flue gas channel, the steel ball collecting device comprises a separating mechanism and a recovering mechanism, the separating mechanism is used for separating steel balls from silicon powder, the recovering mechanism is used for recovering the steel balls, as shown in figure 3, the separating mechanism comprises a main body 1, the main body 1 is cylindrical, the upper end and the lower end of the main body 1 are respectively open, the side wall of the main body 1 is provided with micropores through which the silicon powder can pass, a spiral fan blade 2 is arranged in the main body 1, and a negative pressure cavity 3 is sleeved on the outer surface of the main body 1, the negative pressure cavity 3 and the main body 1 are coaxially arranged, the side wall of the negative pressure cavity 3 is provided with an air suction pipe 4 in a penetrating mode, the air suction pipe 4 is connected with an air suction pump, the air suction pump is started, negative pressure is generated inside the negative pressure cavity 3, silicon powder is sucked out, under the action of the spiral fan blade 2, the steel balls rotate and collide, and separation of the silicon powder and the steel balls is accelerated in the second process.

Specifically, the recycling mechanism comprises a storage cavity 5, the main body 1 is arranged on the upper side wall of the storage cavity 5 in a penetrating mode, a circular cavity 6 is fixedly connected to the bottom of the storage cavity 5, the circular cavity 6 is communicated with the storage cavity 5, a rotary disc 7 is arranged inside the circular cavity 6 in a rotating mode, the rotary disc 7 and the circular cavity 6 are arranged coaxially, the outer surface of the rotary disc 7 is uniformly attached to the inner circumferential surface of the circular cavity 6, as shown in fig. 2, a through groove 8 is formed in the side wall of the rotary disc 7, an opening 9 is formed in the bottom of the circular cavity 6, a driving mechanism for driving the rotary disc 7 to rotate is arranged on the circular cavity 6, as shown in fig. 3, after steel balls enter the through groove 8, the rotary disc 7 slowly rotates under the effect of the driving mechanism, and the hopper moves to the bottom of the opening 9 by controlling the rotating speed of the driving mechanism, the through groove 8 of the rotary disc 7 just moves to the opening 9 and enters the hopper from the opening 9, and the separated steel balls are filled in the storage cavity 5, so that the steel balls can flow out from the opening 9 regularly and quantitatively.

Particularly, 2 fixed connection of spiral fan blade are in pivot 10, pivot 10 with 1 coaxial setting of main part, the inside of storing chamber 5 is equipped with sleeve 11, pivot 10 rotates to be connected on sleeve 11, the bottom fixedly connected with drive of sleeve 11 pivot 10 pivoted driving motor 12, electrical apparatus 12 drive spiral fan blade 2 rotate for the steel ball is longer at 1 inside dwell time in main part, makes the separation effect better.

Particularly, actuating mechanism include with the connecting rod of the coaxial setting of carousel 7, the connecting rod runs through the first running roller 13 of terminal surface fixedly connected with of circular cavity 6, the first bevel gear 14 of outer peripheral face fixedly connected with of pivot 10, the lateral wall of storing chamber 5 runs through and is equipped with the dwang, the one end fixedly connected with second bevel gear 15 of dwang, second bevel gear 15 with first bevel gear 14 meshes, the other end fixedly connected with second running roller 16 of dwang, first running roller 13 with pass through the belt 17 transmission between the second running roller 16 to only need use driving motor can drive the rotation of carousel 7.

Particularly, the terminal surface of spiral fan blade 2 is equipped with the micropore, when the relative spiral fan blade 2 of steel ball removed, can further make silica flour and steel ball break away from, make the separation effect better, under actuating mechanism's effect, carousel 7 slowly rotates, through controlling its rotational speed, make the hopper remove to opening 9 bottom after, the logical groove 8 of carousel 7 removes to opening 9 department just, get into inside the hopper by opening 9, the inside of storage chamber 5 is equipped with the steel ball after the separation, thereby can make the steel ball flow out by opening 9 department regularly and quantitatively.

The working principle is as follows: when the silicon powder separating device is used, the air suction pump is started, negative pressure is generated in the negative pressure cavity 3, silicon powder is sucked out, the steel balls rotate and collide under the action of the spiral fan blades 2, and the separation of the silicon powder and the steel balls is accelerated in the secondary process.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hot stove flue gas silica fume recovery system in high-efficient ore deposit, includes hot stove in ore deposit, exhaust-heat boiler, silica fume separator, negative-pressure air fan and sack cleaner, hot stove in ore deposit, exhaust-heat boiler, silica fume separator, negative-pressure air fan and sack cleaner connect gradually its characterized in that: be provided with the flue gas passageway in the exhaust-heat boiler, flue gas passageway bottom is equipped with steel ball collection device, steel ball collection device includes separating mechanism and retrieves the mechanism, separating mechanism is used for separating steel ball and silica flour, it is used for retrieving the steel ball to retrieve the mechanism, separating mechanism includes main part (1), main part (1) is cylindrical, just the upper and lower both ends of main part (1) are the opening form respectively, the lateral wall of main part (1) is equipped with the micropore, the inside of main part (1) is equipped with spiral flabellum (2), the surface cover of main part (1) is equipped with negative pressure chamber (3), negative pressure chamber (3) with the coaxial setting of main part (1), the lateral wall in negative pressure chamber (3) runs through and is equipped with breathing pipe (4).

2. The system for recovering the micro-silicon powder in the flue gas of the efficient submerged arc furnace according to claim 1, is characterized in that: retrieve mechanism including storing chamber (5), main part (1) runs through the setting and is in store the last lateral wall of chamber (5), store the circular cavity of bottom fixedly connected with (6) of chamber (5), circular cavity (6) with store chamber (5) intercommunication, the inside rotation of circular cavity (6) is equipped with carousel (7), carousel (7) with circular cavity (6) coaxial setting, just the surface of carousel (7) with the inner peripheral surface of circular cavity (6) is even laminated, the lateral wall of carousel (7) is equipped with logical groove (8), the bottom of circular cavity (6) is equipped with opening (9), be equipped with the drive on circular cavity (6) carousel (7) pivoted actuating mechanism.

3. The system for recovering the micro-silicon powder in the flue gas of the efficient submerged arc furnace according to claim 2, is characterized in that: spiral fan blade (2) fixed connection is in pivot (10), pivot (10) with main part (1) coaxial setting, the inside of storing chamber (5) is equipped with sleeve (11), pivot (10) rotate to be connected on sleeve (11), the bottom fixedly connected with drive of sleeve (11) pivot (10) pivoted driving motor (12).

4. The system for recovering the micro-silicon powder in the flue gas of the efficient submerged arc furnace according to claim 3, characterized in that: actuating mechanism include with the connecting rod of the coaxial setting of carousel (7), the connecting rod runs through the first running roller of terminal surface fixedly connected with (13) of circular cavity (6), the first bevel gear of outer peripheral face fixedly connected with (14) of pivot (10), the lateral wall of storing chamber (5) runs through and is equipped with the dwang, the one end fixedly connected with second bevel gear (15) of dwang, second bevel gear (15) with first bevel gear (14) meshing, the other end fixedly connected with second running roller (16) of dwang, first running roller (13) with through belt (17) transmission between second running roller (16).

5. The system for recovering the micro-silicon powder in the flue gas of the efficient submerged arc furnace according to claim 4, characterized in that: the end face of the spiral fan blade (2) is provided with micropores.