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A converter and its application

A converter and furnace body technology, applied in the field of non-ferrous metal smelting, can solve the problems of unrealistic industrialization, high pollution, and high energy consumption of oxygen-enriched molten pool smelting technology, and achieve improved reaction rate and lead recovery rate, uniform temperature distribution, The effect of speeding up the reaction speed

Active Publication Date: 2016-06-01
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the high pollution and high energy consumption of the existing secondary lead resource blast furnace volatilization smelting technology and the shortcomings of the existing oxygen-enriched molten pool smelting technology that cannot be practically industrialized, the present invention aims to provide a method and equipment for low-temperature smelting secondary lead

Method used

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  • A converter and its application
  • A converter and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048]Design a rotary furnace with a furnace body size of 6300×φ3400mm, a fuel port of φ1300mm, a feed port of φ400mm, a φ300mm feed port, and a smoke exhaust port of φ400mm; the center of the smoke exhaust port (6) is located in the horizontal cylindrical furnace body on the horizontal axis.

[0049] The tests were carried out in the rotary furnace described above.

[0050] Preparation:

[0051] Take lead-containing 68.76% waste storage battery cement and mix lead-containing 93.12% broken grid, the mixed material contains lead 76.31%; the amount of sodium carbonate added is 40% of the relative lead material quality, and the amount of coal particles added is 40% of the relative lead material quality. 10%, add water to the above-mentioned materials in a cylinder granulator until the water content of the materials is 8%, and make pellets with a particle size of 5 mm to 18 mm for later use.

[0052] Smelting:

[0053] Add the above-mentioned pellets into 10t of mixed material ...

Embodiment 2

[0055] The melting furnace is the same as in Example 1.

[0056] Preparation:

[0057] Get lead-containing 68.76% waste storage battery cement mixed with lead-containing 20.14%, Au4g / t sulfide ore raw ore powder, the mixture contains lead 50.12%; the amount of sodium carbonate added is 50% of the relative lead material quality, and the amount of coal particles added is Relative to 10% of the mass of the lead material, add water to the above-mentioned material in a cylinder granulator until the material moisture is 8%, and make pellets with a particle size of 5 mm to 18 mm for use.

[0058] Smelting:

[0059] Add the above-mentioned pellets into 10t of mixed material into the above-mentioned rotary furnace, control the melting temperature between 800-900°C, and the flow rate of natural gas at 3000Nm 3 / h, pure oxygen flow rate is 500Nm 3 / h; protective gas is N 2 , the flow rate is 100Nm 3 / h, reaction time 2h. The lead recovery rate is 93.11%, the crude lead contains 99....

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Abstract

The invention relates to a novel converter and application thereof and belongs to the technical field of non-ferrous metal smelting. After lead material sodium carbonate and reducing agent are mixed and granulated, low-temperature alkaline smelting is performed in an originally-designed converter. The smelting equipment comprises a horizontal cylindrical converting body, a support, a rolling ring, a drive mechanism and a transmission device; the horizontal cylindrical converting body is provided with an inlet / outlet, a heating port and an exhausting port; the heating port and the exhausting port are located on two bottoms of the horizontal cylindrical converting body; the inlet / outlet, the rolling ring and the transmission device are located on the side of the horizontal cylindrical converting body, and the inlet / outlet is located between the rolling ring and the transmission device; the heating port is sleeved with a fuel cover with a fuel barrel; the fuel barrel is provided with a fuel tube, an oxygen inlet, a protective gas inlet and a fuel nozzle; the fuel nozzle is located in the horizontal cylindrical converting body; the drive mechanism is connected to the transmission device.

Description

technical field [0001] The invention relates to a converter and its application, belonging to the technical field of nonferrous metal smelting. technical background [0002] my country is a country rich in lead resources in the world, ranking second in the world. It not only has a wide distribution and many types, but also has a good prospect for resources. However, with the large-scale development in recent years, the medium and high-grade mines of lead resources in my country have been decreasing year by year. Compared with the lead resources in the world, there are few large-scale deposits, medium and low-grade resources account for more than 50%, and the proven resource reserves that have been developed and utilized account for nearly 50%. 55%, the proportion of proven resource reserves that can be used for design and planning is relatively low, and most of the unused reserves are concentrated in mining areas with poor construction conditions and resource conditions. Sin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B13/02
Inventor 覃文庆刘维焦芬罗虹霖
Owner CENT SOUTH UNIV
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