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A kind of recycling smelting process of tin-containing material

A material and process technology, applied in the field of tin-containing material recovery and smelting process, can solve the problems of reducing social and economic benefits, reducing the value of resource recovery, and high tin smelting temperature, reducing the amount of flue gas generated, high reaction efficiency, and smelting. The effect of less slag

Active Publication Date: 2022-05-03
HENAN YUGUANG GOLD & LEAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem addressed by the present invention is: the existing technology has high remelting temperature for tin, high energy consumption, high smoke rate, and low tin recovery rate, which reduces its social and economic benefits while recycling resources, and also reduces Resource recovery value

Method used

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  • A kind of recycling smelting process of tin-containing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A recovery smelting process (bottom blowing furnace) for tin-containing materials, the process comprises the following steps:

[0041] (1) Take tin-containing materials (30-50% tin, 10-30% lead) and ball mill to 40 mesh, then ball-mill tin-containing materials, pulverized coal, and soda ash according to the mass ratio of ingredients 20:1:2 and mix and granulate ;

[0042] (2) Add the granulation of step (1) into the furnace from the feed port of the smelting furnace, and smelt at 800-1000°C; during the smelting process, natural gas is used as fuel and pure oxygen is used as combustion-supporting gas by the spray gun at the bottom of the smelting furnace Spray into the metal layer in the furnace, and the pressure of natural gas and pure oxygen is 0.2-0.4MPa;

[0043] Among them, the ratio of the gaseous pure oxygen to the mixed granulation material into the furnace is 80-120m 3 / ton of material, the volume ratio of natural gas and pure oxygen is 0.45-0.5; the content ...

Embodiment 2

[0047] A recovery smelting process (side-blown furnace) for tin-containing materials, the process comprises the following steps:

[0048] (1) Take the tin-containing material (30-50% tin, 10-30% lead) and ball mill to 40 mesh, then ball-mill the tin-containing material, pulverized coal, and soda ash according to the mass ratio of ingredients 20:4:3 and mix and granulate ;

[0049] (2) Add the granulation of step (1) into the furnace from the feed port of the melting furnace, and smelt at 800-1000°C; during the smelting process, coal gas is used as fuel and pure oxygen is used as combustion-supporting gas from the side of the smelting furnace. The spray gun is sprayed into the slag layer in the furnace, and the pressure when the gas and pure oxygen are introduced is 0.2-0.3MPa;

[0050] Among them, the ratio of the gaseous pure oxygen to the mixed granulation material into the furnace is 80-120m 3 / ton of material, the volume ratio of coal gas to pure oxygen is 2.5-3.5; the ...

Embodiment 3

[0054] A recovery smelting process (bottom blowing furnace) for tin-containing materials, the process comprises the following steps:

[0055] (1) Take the tin-containing material (30-50% tin, 10-30% lead) and ball mill to 40 mesh, then ball-mill the tin-containing material, pulverized coal, and soda ash according to the mass ratio of ingredients 20:2:2.5 and mix and granulate ;

[0056] (2) Add the granulation of step (1) into the furnace through the feed port of the melting furnace, and carry out melting under the condition of 800-1000°C; during the melting process, coal gas is used as fuel and pure oxygen is used as combustion-supporting gas by the spray gun at the bottom of the melting furnace Spray into the metal layer in the furnace, and the pressure when the gas and pure oxygen are introduced is 0.3-0.4MPa;

[0057] Among them, the ratio of the gaseous pure oxygen to the mixed granulation material into the furnace is 80-120m 3 / ton of material, the volume ratio of coa...

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Abstract

The invention discloses a process for recycling and smelting tin-containing materials. The process is to mix and granulate tin-containing materials, soda ash and reducing agent; put the mixed granules in a smelting furnace for smelting at 800-1000°C; and recycle the tin alloy obtained by smelting. The process uses tin-containing materials, soda ash and reducing agent as smelting raw materials, and uses a simple and easy-to-control method to smelt tin-containing materials. The temperature of the smelting process is low, reducing energy consumption, and can increase the recovery rate of tin. The resource recovery rate is improved under relatively low conditions, and it has good social and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of metal smelting, and in particular relates to a process for recycling and smelting tin-containing materials. Background technique [0002] With the mining and utilization of a large number of ores, the existing resources, especially rare metals, have been greatly reduced. In order to reduce the exploitation and utilization of resources, reduce the loss of resources and improve the utilization rate of resources. The effective recovery of resources in smelting slag has been widely and rapidly developed, and it has also become one of the ways for enterprises to create profits. [0003] It is widely used in various fields such as industry and electronics, and the smelting of lead has also developed rapidly. Pyrorefining is a common process for lead smelting. In the pyrorefining process of lead, oxidized slag containing 30-50% tin and 10-30% lead will be produced. The tin in the oxidized slag has a high recov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B25/02C22B25/06C22B5/10
CPCC22B25/02C22B25/06C22B5/10Y02P10/20
Inventor 赵振波陈选元李利丽李贵刘素红高冬生李泽李波卢高杰
Owner HENAN YUGUANG GOLD & LEAD
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