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A method for separating and melting high-arsenic and high-lead copper alloy

A copper alloy and high-lead technology, applied in the field of metal smelting, can solve the problems of serious arsenic pollution, high pressure of impurity removal, high pressure of wastewater treatment, etc., and achieve the effect of high smelting efficiency, small flue gas volume and simple process

Active Publication Date: 2021-10-22
HENAN YUGUANG GOLD & LEAD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lead and arsenic slag is sulfate, which is difficult to smelt and separate, and the copper recovery rate is not high
At the same time, the impurity removal pressure of this leaching solution is high, and the electrowinning product is difficult to meet the standard; if the copper in the leaching solution is replaced with iron filings, the cost is high and the wastewater treatment pressure is high
The soot treated by wet process will partly enter the solution during the leaching process, and the arsenic pollution in the whole process is serious
The other is to directly blow the part of the material to produce high-arsenic blister copper and arsenic soot. The arsenic soot is difficult to handle, and it is difficult to use the high-arsenic blister copper and qualified blister copper together, resulting in a backlog of funds.
[0004] At present, the existing technology can not solve the technical problem of arsenic pollution whether it adopts pyrotechnic process or wet process to treat high-arsenic lead matte

Method used

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  • A method for separating and melting high-arsenic and high-lead copper alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The main components and weight percentages of the high-arsenic high-lead copper alloy used in this embodiment are respectively Cu 28%, Pb 26%, As 22%; the main components and weight percentages of the described black copper slag are respectively Cu 45%, As 18%.

[0030] The detailed steps of the separation and smelting method of the high-arsenic high-lead copper alloy of the present invention are as follows:

[0031] a. Mix high-arsenic and high-lead copper alloy, black copper slag and quartz according to the weight ratio of 100:10:10, and then put them into the bottom blowing furnace for oxidation smelting; during the oxidation smelting process, control the melting temperature to 1150°C, During the smelting process, oxygen and natural gas are fed into the melt through an oxygen lance for heating and oxidation, and the ratio of oxygen to material is 90m 3 / ton of material, the volume ratio between oxygen and natural gas is 3.2:1; lead-arsenic soot and copper-arsenic-l...

Embodiment 2

[0039] The main components and weight percentages of the high-arsenic high-lead copper alloy used in this embodiment are respectively Cu 32%, Pb 23%, As 21%; the main components and weight percentages of the described black copper slag are respectively Cu 35%, As 25%.

[0040] The detailed steps of the separation and smelting method of the high-arsenic high-lead copper alloy of the present invention are as follows:

[0041] a. Mix high-arsenic and high-lead copper alloy, black copper slag and quartz according to the weight ratio of 100:10:13, and then put them into the bottom blowing furnace for oxidation melting; during the oxidation melting process, the melting temperature is controlled at 1180°C, and the oxidation During the smelting process, oxygen and natural gas are fed into the melt through an oxygen lance for heating and oxidation, and the ratio of oxygen to material is 110m 3 / ton of material, the volume ratio between oxygen and natural gas is 3.6:1; lead-arsenic so...

Embodiment 3

[0049] The main components and weight percentages of the high-arsenic high-lead copper alloy used in this embodiment are respectively Cu22%, Pb30%, As 30%; the main components and weight percentages of the described black copper slag are Cu 50% respectively. %, As 15%.

[0050] The detailed steps of the separation and smelting method of the high-arsenic high-lead copper alloy of the present invention are as follows:

[0051] a. Mix high-arsenic and high-lead copper alloy, black copper slag and quartz according to the weight ratio of 100:10:15, and then put them into the bottom blowing furnace for oxidation melting; during the oxidation melting process, the melting temperature is controlled at 1100°C, and the oxidation During the smelting process, oxygen and natural gas are fed into the melt through the oxygen lance for heating and oxidation, and the ratio of oxygen to material is 75m 3 / ton of material, the volume ratio between oxygen and natural gas is 3.0:1; lead-arsenic s...

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Abstract

The invention discloses a method for separating and melting high-arsenic and high-lead copper alloy. First, high-arsenic and high-lead copper alloy, black copper slag and quartz are added to the bottom-blown furnace for oxidation and smelting, and lead-arsenic soot and copper-arsenic-lead oxidized slag are produced; the obtained oxidized slag flows into the bottom-blown matte smelting furnace in liquid form The matte-making smelting reaction is carried out to produce lead-arsenic soot, matte and lead-arsenic slag; the produced lead-arsenic soot, lead-arsenic slag and soda ash are added to the low-temperature reduction bottom-blown furnace for smelting reduction reaction to produce lead-arsenic soot Alloy, lead-arsenic soot and waste slag, and lead-arsenic soot are returned to the low-temperature reduction bottom-blown furnace for recycling; the obtained lead-arsenic alloy is subjected to vacuum distillation to separate lead and arsenic, and produce elemental arsenic and crude lead. The technical scheme of the invention can effectively separate copper, lead and arsenic, and produce qualified matte, crude lead and crude arsenic.

Description

1. Technical field: [0001] The invention belongs to the technical field of metal smelting, and in particular relates to a method for separating and melting high-arsenic and high-lead copper alloys. 2. Background technology: [0002] In the lead smelting process, crude lead crude copper pyro-refining will produce copper dross, which contains high arsenic, and will produce copper alloys with high arsenic and high lead in the subsequent copper recovery process; The black copper slag that will be produced during the electrolyte removal process in the process is also an alloy of copper and arsenic. The above two materials contain more than 15% arsenic, and the arsenic and copper exist in the form of metal alloy. [0003] At present, there are mainly two ways for relevant enterprises to deal with such materials: one is to directly re-batch some of the materials into the system, and after multiple cycles of enrichment, the arsenic and lead enter the soot, and the soot is deleaded ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/04C22B13/02C22B15/00C22B30/04
CPCC22B7/001C22B7/04C22B13/025C22B15/0028C22B15/0054C22B30/04Y02P10/20
Inventor 赵振波陈选元李利丽李贵刘素红高冬生李泽卢高杰
Owner HENAN YUGUANG GOLD & LEAD
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