CN113371289A

CN113371289A - Silicon feeding hopper device for silicon-aluminum mixing furnace

Info

Publication number: CN113371289A
Application number: CN202110736399.XA
Authority: CN
Inventors: 赵忠斌; 王昕平; 王贤年; 杨林
Original assignee: Qingtongxia Aluminium Group Co ltd
Current assignee: Qingtongxia Aluminium Group Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-09-10

Abstract

The invention discloses a silicon feeding hopper device for a silicon-aluminum mixing furnace, which comprises a mixing furnace, wherein an aluminum chute is arranged on one side of the mixing furnace, and a material receiving opening is formed in the aluminum chute; a hopper device is arranged above the material receiving port and comprises a silicon hopper in the shape of an inverted isosceles frustum, the silicon hopper is connected with a rectangular blanking cavity, a pointed cone is arranged in the blanking cavity and comprises a net cone and a pointed spine part which are fixedly connected with the blanking cavity, the blanking cavity is connected with a material outlet in the shape of an irregular frustum, the material outlet corresponds to the material receiving port, a sliding track is arranged at the bottom of the material outlet, a flashboard capable of sliding back and forth is arranged on the track, the flashboard is connected with an electric telescopic rod, the telescopic rod is connected with a fixed column, and a control device and an alarm device are embedded in the fixed column; the natural gas consumption is reduced, the number of silicon particles which are wrapped by aluminum ash and float on the surface of the aluminum liquid is reduced, the uniformity of chemical components of silicon is improved, extra profit income is created, the environmental pollution is avoided, and the cost is reduced.

Description

Silicon feeding hopper device for silicon-aluminum mixing furnace

Technical Field

The invention relates to a silicon feeding hopper device, in particular to a silicon feeding hopper device for a silicon-aluminum mixing furnace.

Background

The currently adopted silicon adding mode is that the required industrial silicon is put on a silicon adding platform in a whole bag through a furnace door of a mixing furnace, the whole bag is pushed into an empty mixing furnace by a forklift, then a furnace door is closed, ignition is carried out, aluminum is added, and silicon melting is started. When the molten aluminum is completely fed and the furnace temperature reaches about 780 ℃, the stirring furnace of the slag removing vehicle is started to continuously melt silicon, and the silicon adding mode has low actual yield of industrial silicon, which is only 94%. Secondly, the number of incompletely melted industrial silicon particles in the furnace is large, which affects the casting loss index and the production cost. And finally, the energy consumption loss is high, and the furnace door needs to be opened for operation in the processes of silicon adding and furnace stirring, so that the energy consumption index of aluminum-natural gas per ton exceeds 32Nm/t-Al, which is far higher than the industrial level.

Disclosure of Invention

The invention provides a silicon feeding hopper device for a silicon-aluminum mixing furnace, aiming at solving the problems, and the silicon feeding hopper device comprises a mixing furnace, wherein an aluminum chute is arranged on one side of the mixing furnace, and a material receiving port is arranged on the aluminum chute;

connect material mouth top to install hopper arrangement, hopper arrangement with blending furnace fixed connection, hopper arrangement includes the silicon hopper of the isosceles frustum of prism body that the shape is invertd, the silicon hopper is connected with rectangle unloading chamber, the pointed cone is installed to the unloading intracavity, the pointed cone include with unloading chamber fixed connection's net cone and spine part, the unloading chamber is connected with the discharge gate that the shape is irregular frustum of prism body, the discharge gate with connect the material mouth to correspond, the track that slides is installed to the discharge gate bottom, install gliding flashboard back and forth on the track, the flashboard is connected with electric telescopic handle, the telescopic link is connected with the fixed column, the embedding has controlling means and alarm device on the fixed column.

Furthermore, the material receiving opening is funnel-shaped.

Further, the volume of the silicon hopper is 0.6 cubic meter to 1 cubic meter.

Furthermore, the blanking cavity is a cube, and the volume of the blanking cavity is 1.2 to 1.5 cubic meters.

Further, the spine part is arrow-shaped.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the silicon feeding hopper device for the silicon-aluminum mixing furnace, disclosed by the invention, the silicon particles are heated by utilizing the electrolytic high-temperature aluminum liquid, the consumption of natural gas for simply heating the silicon particles by using natural gas is reduced, and the unit consumption of aluminum natural gas per ton is reduced to 20 Nm/t-Al.

2. According to the silicon adding hopper device for the silicon-aluminum mixing furnace, silicon adding does not need to open a door of the mixing furnace, so that the temperature of a hearth is not reduced, and the consumption of natural gas is reduced.

3. According to the silicon adding hopper device for the silicon-aluminum mixing furnace, silicon particles are flushed by the high-temperature aluminum liquid flowing rapidly, so that the silicon particles and the high-temperature aluminum liquid form relative motion, the dissolving speed of the silicon particles is increased, the number of the silicon particles which are wrapped by aluminum ash and float on the surface of the aluminum liquid is reduced, the casting loss index is reduced from 2.3% to 1.8%, and is reduced by 0.5%.

4. According to the silicon feeding hopper device for the silicon-aluminum mixing furnace, the frequency of stirring the mixing furnace by a slag skimming vehicle is reduced, and the uniformity of chemical components of silicon is improved.

5. According to the silicon adding hopper device for the silicon-aluminum mixing furnace, the used industrial silicon ton bag is not burnt and wasted, can be recycled and then is subjected to centralized auction, extra profit income is created, and environmental pollution is avoided.

6. According to the silicon feeding hopper device for the silicon-aluminum mixing furnace, the actual yield of industrial silicon is improved from 94% to 97%; the frequency of transporting the silicon bags by the fork of the forklift is reduced, the fuel consumption of the forklift is reduced, and the environmental pollution is also reduced.

7. According to the silicon adding hopper device for the silicon-aluminum mixing furnace, the conventional data analysis shows that the hopper device is additionally arranged above the material receiving port of the mixing furnace, the silicon adding mode is changed, the actual yield of industrial silicon is improved from 94% to 97% and is improved by 3%, and if the market price of the industrial silicon (3303#) is 13000 yuan/ton, 0.72 million tons are consumed annually, 280.08 million yuan is saved, so that the production cost is reduced at the same time.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without making any inventive changes.

Fig. 1 is an overall structural view of the present invention.

FIG. 2 is a schematic view of a hopper apparatus of the present invention.

Fig. 3 is a bottom view of the sliding track, the gate plate and the electric telescopic rod of the invention.

In the figure: 1-mixing furnace, 2-aluminum chute, 3-receiving port, 4-hopper device, 41-silicon hopper, 42-blanking cavity, 43-pointed cone, 431-mesh cone, 432-pointed spine part, 44-discharging port, 45-sliding track, 46-flashboard, 5-electric telescopic rod, 6-fixed column, 7-control device and 8-alarm device.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings.

As shown in fig. 1, 2 and 3, the silicon feeding hopper device for the silicon-aluminum mixing furnace comprises a mixing furnace 1, wherein an aluminum chute 2 is arranged on one side of the mixing furnace 1, and a material receiving port 3 is arranged on the aluminum chute 2;

connect 3 tops of material mouth to install magazine attachment 4, magazine attachment 4 and 1 fixed connection of hybrid furnace, magazine attachment 4 includes the silicon hopper 41 of the isosceles frustum of prism body of shape for invering, silicon hopper 41 is connected with rectangle unloading chamber 42, install pointed cone 43 in the unloading chamber 42, pointed cone 43 includes net cone 431 and spine part 432 with unloading chamber 42 fixed connection, unloading chamber 42 is connected with the discharge gate 44 that the shape is irregular frustum of prism body, discharge gate 44 corresponds with connecing material mouth 3, slide track 45 is installed to discharge gate 44 bottom, install gliding flashboard 46 of making a round trip on the track, flashboard 46 is connected with electric telescopic handle 5, the telescopic link is connected with fixed column 6, the embedding has controlling means 7 and alarm device 8 on the fixed column 6.

Specifically, the receiving port 3 is funnel-shaped.

Specifically, the volume of the silicon hopper 41 is 0.6 cubic meter to 1 cubic meter.

Specifically, the blanking cavity 42 is a cube with a volume of 1.2 cubic meters to 1.5 cubic meters.

Specifically, the spike portion 432 is arrow-shaped.

The working principle of the invention is as follows: above the aluminum chute 2 of the mixing furnace 1, a self-made hopper device 4 is installed right above the material receiving port 3, the total volume of the hopper device 4 is about 1.8-2.5 cubic meters, the hopper device 4 comprises a silicon hopper 41 in the shape of an inverted isosceles frustum, the silicon hopper 41 is connected with a rectangular blanking cavity 42, a pointed cone 43 is installed in the blanking cavity 42, when the silicon hopper is used, an industrial silicon ton bag is hoisted to the upper side of the hopper device 4 by a crown block, namely, the silicon hopper 41 is right above, the silicon ton bag extends into the hopper device 4 until the bottom of the silicon ton bag collides with the pointed cone 43 in the blanking cavity 42, the bottom of the silicon ton bag is cut by the pointed cone 43, the industrial silicon falls out from the broken position at the bottom of the silicon ton bag by utilizing the self weight of the silicon ton bag, the mouth cut at the bottom of the silicon ton bag is torn greatly, and industrial silicon particles fall into the silicon hopper 41. When aluminum is to be fed, a person opens the gate plate 46 at the bottom of the silicon hopper 41, and industrial silicon particles fall into the aluminum chute 2 through the material receiving port 3 under the self-weight condition and are flushed into the mixing furnace 1 by high-temperature and fast-flowing aluminum liquid.

The electric telescopic rod 5 controls the opening, closing and opening of the flashboard 46, mixed discharging is achieved, and meanwhile, silicon particles are guaranteed to fall down at a constant speed. The electric telescopic rod 5 is controlled by a control device 7 on the fixed column 6. When the discharging speed of the discharging port 44 is slow, even when the material is blocked, and when the discharging speed is lower than the preset speed, the alarm device 8 can automatically give an alarm to remind a worker to check the material in the future.

The electrolytic high-temperature aluminum liquid is used for heating the silicon particles, the consumption of natural gas for simply heating the silicon particles by using natural gas is reduced, and the unit consumption of aluminum natural gas per ton is reduced to 20 Nm/t-Al; the silicon is added, and the door of the mixing furnace 1 is not opened, so that the temperature of the hearth is not reduced, and the consumption of natural gas is reduced; the silicon particles are flushed by the fast flowing high-temperature aluminum liquid, so that the silicon particles and the aluminum liquid form relative motion, the dissolving speed of the silicon particles is increased, the number of the silicon particles which are wrapped by aluminum ash and float on the surface of the aluminum liquid is reduced, the casting loss index is reduced from 2.3% to 1.8%, and is reduced by 0.5%; meanwhile, the frequency of stirring the mixing furnace 1 by a slag removing vehicle is reduced, and the uniformity of chemical components of silicon is improved; the used industrial silicon ton bag is not burnt and wasted, can be recycled and then is subjected to concentrated auction, extra profit income is created, and environmental pollution is avoided; the actual yield of the industrial silicon is improved from 94 percent to 97 percent; the frequency of transporting the silicon bags by the fork of the forklift is reduced, the fuel consumption of the forklift is reduced, and the environmental pollution is also reduced.

As can be seen from the previous data analysis, the hopper device 4 is additionally arranged above the material receiving port 3 of the mixing furnace 1, the silicon adding mode is changed, the actual yield of the industrial silicon is improved from 94 percent to 97 percent and is improved by 3 percent, and if the industrial silicon (3303#) is calculated according to the market price of 13000 yuan/ton and consumes 0.72 ten thousand tons every year, 280.08 ten thousand yuan is saved every year, so the production cost is also reduced.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The above-described embodiments of the present application do not limit the scope of the present application.

Claims

1. A silicon feeding hopper device for a silicon-aluminum mixing furnace comprises the mixing furnace and is characterized in that an aluminum chute is arranged on one side of the mixing furnace, and a material receiving opening is formed in the aluminum chute;

2. The silicon adding hopper device for the silicon-aluminum mixing furnace according to claim 1, wherein the receiving opening is funnel-shaped.

3. The silicon adding hopper device for the silicon aluminum mixing furnace according to claim 1, wherein the volume of the silicon hopper is 0.6 to 1 cubic meter.

4. The silicon adding hopper device for the silicon-aluminum mixing furnace according to claim 1, wherein the blanking cavity is a cube with a volume of 1.2 to 1.5 cubic meters.

5. The silicon adding hopper device for the silicon aluminum mixing furnace according to claim 4, wherein the pointed part is arrow-shaped.