CN116481316A - Redox integrated metallurgical furnace - Google Patents

Abstract

The invention relates to an oxidation-reduction integrated smelting furnace, which comprises an integrated furnace body, wherein the interior of the furnace body is divided into an oxidation furnace and a reduction furnace through a furnace wall, and the upper end of the furnace wall is lower than the inner top wall of the furnace body; the inner bottom of the oxidation furnace is higher than the inner bottom of the reduction furnace, and a siphon component is arranged between the reduction furnace and the oxidation furnace; the upper section of the furnace body is provided with a flue gas pipeline, the upper end of the oxidation furnace is provided with a feeding port and a slag detection port, and the upper end of the reduction furnace is provided with an auxiliary material port and a lead detection port. The integrated metallurgical furnace can shorten the process flow of traditional lead smelting, integrate two sets of environment smoke collection and dust collection needed by oxidation and reduction, reduce the investment cost of factories and save the labor cost.

Description

Redox integrated metallurgical furnace

technical field

The invention belongs to the technical field of smelting, and in particular relates to an oxidation-reduction integrated smelting furnace.

Background technique

In recent years, the mode of pyrometallurgical lead smelting has gradually changed from materials with high lead content to materials with low lead content or other slag materials, and some of the original furnace types have changed accordingly, gradually transitioning from two-stage lead smelting to one-stage oxidation and one-stage reduction. However, the personnel composition of the two metallurgical furnaces remains unchanged, and the required equipment and floor space will not change. With the increasing pressure of environmental protection, the production and operation of pyrometallurgy is facing huge challenges. How to reduce costs and expand economic benefits has become a threat to the survival of enterprises.

The present invention can further reduce the investment and labor costs under the current latest lead smelting mode, and greatly reduce the operating cost of the enterprise. Under the same production capacity, it occupies a very obvious economic advantage, and will become the preferred furnace type for lead smelting and even other smelting industries in the future.

Contents of the invention

In order to overcome the problems in the background technology, the present invention provides a redox integrated smelting furnace.

To achieve the above object, the present invention is achieved through the following technical solutions:

An oxidation-reduction integrated smelting furnace, comprising an integrated furnace body, the interior of the furnace body is divided into an oxidation furnace and a reduction furnace by a furnace wall, the upper end of the furnace wall is lower than the inner top wall of the furnace body; the inner bottom of the oxidation furnace is higher than the inner bottom of the reduction furnace, and a siphon component is arranged between the reduction furnace and the oxidation furnace; a flue gas pipeline is provided on the upper part of the furnace body, a feeding port and a slag detection port are provided at the upper end of the oxidation furnace, and an auxiliary material port and a lead detection port are provided at the upper end of the reduction furnace.

Further, the flue gas pipeline is located directly above the furnace wall, and the oxidation furnace and the reduction furnace each occupy half of the flue gas pipeline.

Further, the siphon assembly includes a slag discharge siphon well, a first siphon channel and a slag chute; the slag discharge siphon well is arranged on the outer wall of the oxidation furnace, one end of the first siphon channel extends to the bottom of the oxidation furnace, and the other end communicates with the slag discharge siphon well; the slag discharge siphon well communicates with the reduction furnace through the slag chute.

Further, the bottom of the oxidation furnace is funnel-shaped and slopes toward the first siphon channel.

Further, the outer wall of the reduction furnace is provided with a lead-discharging siphon well, and the lead-discharging siphon well is connected to the bottom of the reduction furnace through a second sloping downward siphon passage, and the bottom of the reduction furnace is funnel-shaped and slopes toward the lower port of the second siphon passage.

Further, the height of the siphon well of the oxidation furnace is 1.5m, which is 0.5m higher than the normal melting pool height of the reduction furnace, so as to ensure that the oxidation furnace melt pool flows into the reduction furnace.

Further, the inclination angle of the slag chute connecting the oxidation furnace and the reduction furnace is 15 degrees, which can realize the voluntary flow of molten slag.

Further, the sides of the oxidation furnace and the reduction furnace are provided with reserved emergency slagging pipes.

Further, the bottom of the reduction furnace is funnel-shaped and slopes toward the second siphon channel.

Beneficial effects of the present invention: the use of the integrated metallurgical road of the present invention can shorten the process flow of traditional lead smelting, and combine the two sets of environments for oxidation and reduction into one for smoke collection and dust collection, which can reduce factory investment costs and save labor costs.

Description of drawings

Fig. 1 is a top view of the present invention;

Fig. 2 is a structural schematic diagram of an oxidation furnace in the present invention.

In the figure, 1, furnace body; 2, furnace wall; 3, oxidation furnace; 4, reduction furnace; 5, siphon assembly; 501, slag discharge siphon well; 502, first siphon channel; 503, slag chute;

Detailed ways

In order to make the purpose, technical solutions and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below, so as to facilitate the understanding of the skilled person.

An embodiment, an oxidation-reduction integrated smelting furnace, with reference to accompanying drawings 1-2, includes an integrated furnace body 1, the interior of the furnace body 1 is divided into an oxidation furnace 3 and a reduction furnace 4 by a furnace wall 2, the upper end of the furnace wall 2 is lower than the inner top wall of the furnace body 1; the inner bottom of the oxidation furnace 3 is 0.5m higher than the inner bottom of the reduction furnace 4, and a siphon assembly 5 is provided between the reduction furnace 4 and the oxidation furnace 3; the slag in the oxidation furnace 3 is transported to the reduction furnace 4 through the siphon assembly 5. A flue gas pipeline 6 is provided, a feeding port 7 and a slag detection port 12 are provided at the upper end of the oxidation furnace 3 , and an auxiliary material port 8 and a lead detection port 13 are provided at the upper end of the reduction furnace 4 .

In one embodiment, the flue gas pipeline 6 is located directly above the furnace wall 2, the oxidation furnace 3 and the reduction furnace 4 each occupy half of the flue gas pipeline 6, and the two furnace bodies 1 share a set of waste heat boilers to absorb the heat in the flue gas and a set of dust removal equipment to treat the smoke in the flue gas, which can save construction investment costs.

In one embodiment, the siphon assembly 5 includes a slag discharge siphon well 501, a first siphon channel 502 and a slag chute 503; the slag discharge siphon well 501 is arranged on the outer wall of the oxidation furnace 3; the first siphon channel 502 is made of 140mm*140mm refractory bricks, one end of which extends into the bottom of the oxidation furnace 3, and the other end communicates with the slag discharge siphon well 501; Furnace 4.

In one embodiment, the bottom of the oxidation furnace 3 is funnel-shaped and slopes toward the first siphon channel 502 .

In one embodiment, the outer wall of the reduction furnace 4 is provided with a lead-discharging siphon well 9, and the lead-discharging siphon well 9 is connected to the bottom of the reduction furnace 4 through a second siphon channel 10 inclined downward. The second siphon channel 10 is built by refractory bricks of 140mm*140mm.

In one embodiment, the height of the siphon well of the oxidation furnace 3 is 1.5 m, which is 0.5 m higher than the normal melting pool height of the reduction furnace 4 , so as to ensure that the molten pool of the oxidation furnace 3 flows into the reduction furnace 4 .

In one embodiment, the inclination angle of the slag chute 503 is 15 degrees, so that the slag can flow by itself.

In one embodiment, the sides of the oxidation furnace 3 and the reduction furnace 4 are provided with reserved emergency slagging pipes 11 .

In one embodiment, the bottom of the reduction furnace 4 is funnel-shaped and slopes toward the second siphon channel 10 .

Finally, it is noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and details without departing from the scope defined by the claims of the present invention.

Claims (9)

1. An oxidation-reduction integrated smelting furnace is characterized in that: the furnace comprises an integrated furnace body, wherein the interior of the furnace body is divided into an oxidation furnace and a reduction furnace through a furnace wall, and the upper end of the furnace wall is lower than the inner top wall of the furnace body; the inner bottom of the oxidation furnace is higher than the inner bottom of the reduction furnace, and a siphon component is arranged between the reduction furnace and the oxidation furnace; the upper section of the furnace body is provided with a flue gas pipeline, the upper end of the oxidation furnace is provided with a feeding port and a slag detection port, and the upper end of the reduction furnace is provided with an auxiliary material port and a lead detection port.

2. The redox integrated smelting furnace of claim 1, wherein: the flue gas pipeline is positioned right above the furnace wall, and the oxidation furnace and the reduction furnace respectively occupy half of the flue gas pipeline.

3. The redox integrated smelting furnace of claim 1, wherein: the siphon assembly comprises a slag discharging siphon well, a first siphon channel and a slag chute; the slag discharging siphon well is arranged on the outer wall of the oxidation furnace, one end of the first siphon channel extends into the bottom of the oxidation furnace, and the other end of the first siphon channel is communicated with the slag discharging siphon well; the slag discharging siphon well is communicated with the reduction furnace through a slag chute.

4. A redox integrated smelting furnace according to claim 3, wherein: the bottom of the oxidation furnace is inclined towards the first siphon channel in a funnel shape.

5. The redox integrated smelting furnace of claim 1, wherein: the outer wall of the reduction furnace is provided with a lead discharging siphon well, the lead discharging siphon well is connected to the bottom of the reduction furnace through a second siphon channel which is inclined downwards, and the bottom of the reduction furnace is inclined towards the lower port of the second siphon channel in a funnel shape.

6. The redox integrated smelting furnace of claim 1, wherein: the height of the siphon well of the oxidation furnace is 1.5m, which is 0.5m higher than the height of the normal smelting pool of the reduction furnace.

7. The redox integrated smelting furnace of claim 1, wherein: the sides of the oxidation furnace and the reduction furnace are provided with reserved accident slag discharging pipes.

8. A redox integrated smelting furnace according to claim 3, wherein: the inclination angle of the slag chute is 15 degrees.

9. The redox integrated smelting furnace of claim 5, wherein: the bottom of the reduction furnace is inclined towards the second siphon channel in a funnel shape.