Multifunctional composite smelting furnace for thermometallurgy

Abstract

The utility model discloses a multifunctional composite smelting furnace for pyrometallurgy, which integrates the functions of a traditional electric furnace and a side-blown furnace, can perform electric furnace smelting and side-blown furnace smelting in one furnace, and is characterized in that a conductive cross arm and a graphite electrode clamping device are arranged above the composite smelting furnace; a side blowing spray gun is arranged on the side portion of the furnace body, the furnace cover rotates through the rotary hydraulic cylinder and is rotated out of the furnace body, and the furnace body tilts through the tilting hydraulic oil cylinder to empty melt in the furnace. The composite smelting furnace is high in smelting efficiency, safe, reliable, easy to operate and suitable for smelting and enrichment of various raw materials containing nickel, copper, cobalt, rare and precious metals and the like.

Description

Technical Field

[0001] This utility model belongs to the field of pyrometallurgy, and in particular relates to a multifunctional composite smelting furnace for processing materials containing nickel, copper, cobalt and rare precious metals. Background Technology

[0002] In recent years, the development of side-blown smelting furnaces in non-ferrous metal pyrometallurgical processes has been rapid. Side-blown smelting furnaces, with their advantages of strong raw material adaptability, low slag metal content, high metal recovery rate, and low overall energy consumption, have been widely promoted and applied in the pyrometallurgical industries of nickel, copper, cobalt, and rare and precious metals. However, due to the special structure of side-blown smelting furnaces, oxygen-enriched air is blown into the melt from the slag layer. When a frozen layer appears at the bottom of the furnace due to the concentrated heat of reaction in the slag layer, melting the frozen layer is difficult, especially when processing oxide mineral materials with low heat of reaction and high melting point, where raising the temperature is challenging. Based on this, this utility model discloses a multifunctional composite smelting furnace for the pyrometallurgical field. It adds a graphite electrode heating system to the side-blown smelting reaction zone, integrating the traditional side-blown furnace and electric furnace into one furnace, solving the shortcomings of existing side-blown furnaces and improving the raw material adaptability of side-blown smelting furnaces. Utility Model Content

[0003] The purpose of this invention is to provide a composite smelting furnace for pyrometallurgy to solve the problems of low raw material adaptability and low smelting efficiency in existing side-blown smelting furnaces.

[0004] The technical solution adopted by this utility model is as follows: A multifunctional composite smelting furnace for pyrometallurgy includes a furnace body, a water-cooled furnace cover installed on the upper part of the furnace body, a side-blowing spray gun installed on the side of the furnace body, and a conductive mechanism. The conductive mechanism includes a conductive cross arm, a clamping device, a graphite electrode, and a slide. One end of the conductive cross arm is slidably connected to the slide, and the other end of the conductive cross arm is fixed with a clamping device. The clamping device clamps the graphite electrode, and the graphite electrode passes through the water-cooled furnace cover and enters the furnace body to contact the internal raw materials.

[0005] As a further improvement of this utility model, the conductive cross arm is fastened to the carriage by pulleys.

[0006] The beneficial effects of this utility model are:

[0007] This invention adds a graphite electrode to the side-blown smelting reaction zone, integrating a traditional side-blown furnace and an electric furnace into one furnace. It simultaneously possesses the functions of both electric furnaces and side-blown furnaces, enabling the smelting of materials containing nickel, copper, cobalt, and rare precious metals in both electric furnaces and side-blown furnaces within a single furnace. Compared to traditional side-blown furnaces, it improves the adaptability to raw materials with high melting points and low heat of reaction, resulting in higher operating efficiency. The conductive cross arm is mounted on a slide, and its height is adjusted by sliding up and down the slide using pulleys, allowing the graphite electrode to enter the furnace body and contact the raw materials. Attached Figure Description

[0008] Figure 1This is a schematic diagram of the overall external structure of a multifunctional composite smelting furnace used in pyrometallurgy.

[0009] 1-Furnace body; 2-Water-cooled furnace cover; 3-Conductive cross arm; 4-Clamping device; 5-Graphite electrode; 6-Slide carriage; 7-Furnace cover rotating hydraulic cylinder; 8-Side blowing spray gun; 9-Furnace body tilting hydraulic cylinder. Detailed Implementation

[0010] The utility model will be further described in detail below with reference to the accompanying drawings and specific facts.

[0011] like Figure 1 As shown, a multifunctional composite smelting furnace for pyrometallurgical processes includes a furnace body 1, a water-cooled furnace cover 2 installed on the upper part of the furnace body 1, a side-blowing spray gun 8 installed on the side of the furnace body 1, and a conductive mechanism. The conductive mechanism includes a conductive cross arm 3, a clamping device 4, a graphite electrode 5, and a slide 6. One end of the conductive cross arm 3 is slidably connected to the slide 6, and the other end of the conductive cross arm 3 is fixed with the clamping device 4. The clamping device 4 clamps the graphite electrode 5, and the graphite electrode 5 passes through the water-cooled furnace cover 2 and enters the furnace body 1 to contact the internal raw materials.

[0012] The conductive cross arm 3 can slide up and down on the slide 6 via pulleys, allowing the graphite electrode 5 to enter the interior of the furnace body 1.

[0013] The side-blowing lance 8 can inject natural gas and oxygen-enriched air into the furnace for side-blowing smelting, improving the adaptability to raw materials with high melting points and low heat of reaction.

[0014] A furnace cover rotating hydraulic cylinder 7 is installed on the side of the furnace body 1, and the water-cooled furnace cover 2 can be rotated by the furnace cover rotating hydraulic cylinder 7.

[0015] A furnace body tilting hydraulic cylinder 9 is installed on the side of the furnace body 1, and the furnace body 1 can be tilted by the furnace body tilting hydraulic cylinder 9.

[0016] In use, the graphite electrode 5 is clamped by the clamping device 4, and the height of the conductive cross arm 3 on the slide 6 is adjusted so that the graphite electrode 5 is in a suitable position inside the furnace body 1. The side-blowing lance 8 is made of 210s stainless steel and has a natural gas channel and an oxygen-enriched air channel inside. Natural gas and oxygen-enriched air can be injected into the furnace to melt the materials inside the furnace for side-blowing smelting. This ensures that the side-blowing lance 8 will not burn or deform at a temperature of 1200℃, thus extending the service life of the side-blowing lance 8. At the same time, the graphite electrode 5 is used to smelt the materials inside the furnace body 1. After smelting, the cold furnace cover 2 is rotated out of the furnace body 1 by the furnace cover rotation hydraulic cylinder 7, and the furnace body 1 is tilted by the furnace body tilting hydraulic cylinder 9 to pour out the molten material inside the furnace. This utility model integrates the traditional side-blowing furnace and the electric furnace into one furnace, solves the shortcomings of the existing side-blowing furnace, and improves the raw material adaptability of the side-blowing smelting furnace.

Claims

1. A multifunctional composite smelting furnace for pyrometallurgical processes, comprising a furnace body (1), a water-cooled furnace cover (2) mounted on the upper part of the furnace body (1), and a side-blowing spray gun (8) mounted on the side of the furnace body (1), characterized in that: It also includes a conductive mechanism, which includes a conductive cross arm (3), a clamping device (4), a graphite electrode (5) and a slide (6). One end of the conductive cross arm (3) is slidably connected to the slide (6), and the other end of the conductive cross arm (3) is fixed with a clamping device (4). The clamping device (4) clamps the graphite electrode (5), and the graphite electrode (5) passes through the water-cooled furnace cover (2) and enters the furnace body (1) to contact the internal raw materials.

2. A multi-functional composite smelting furnace for pyrometallurgy according to claim 1, characterized in that: The conductive cross arm (3) is fastened to the carriage (6) by pulleys.

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