Method for separating lead and antimony of jamesonite concentrate by virtue of vacuum treatment

A brittle sulfur-lead-antimony ore and vacuum treatment technology, which is applied in the field of non-ferrous metal smelting, can solve the problems of environmental pollution, excessive material returns, and long process flow, so as to avoid the production of lead-antimony alloys, reduce production costs, and reduce energy consumption. Effect

Active Publication Date: 2015-03-25
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

There are many problems in this smelting method, mainly manifested in the large number of returned materials in the smelting process, long proce

Method used

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  • Method for separating lead and antimony of jamesonite concentrate by virtue of vacuum treatment
  • Method for separating lead and antimony of jamesonite concentrate by virtue of vacuum treatment

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Embodiment 1

[0031] Embodiment 1: as figure 1 Shown, the method for vacuum treatment of brittle pyroprobite to separate lead and antimony, its concrete steps are as follows:

[0032] (1) Combine the beneficiated brittle lead antimonite and yellow antimonite (Pb 4 FeSb 6 S 14 with Sb 2 o 4 Molar ratio 1: 1.7) mixing;

[0033] (2) Place the mixed material obtained in step (1) in a vacuum furnace, vacuum distill for 2 hours under the conditions of controlling the residual pressure in the furnace to 5Pa and the distillation temperature to 550°C, and then cool it down. When the temperature drops below 100°C, close the Vacuum system, take out material after cooling to obtain volatile Sb 2 o 3 Product and residue PbS and FeS;

[0034] (3) Put the residue PbS and FeS obtained in step (2) in a vacuum furnace, vacuum distill for 2 hours under the condition of controlling the residual pressure in the furnace to be 10Pa, and the distillation temperature is 1000°C, and then cool down. When the ...

Embodiment 2

[0036] Embodiment 2: as figure 1 Shown, the method for vacuum treatment of brittle pyroprobite to separate lead and antimony, its concrete steps are as follows:

[0037] (1) Combine the brittle pyroprobite and pure Sb after beneficiation 2 o 4 (Pb 4 FeSb 6 S 14 with Sb 2 o 4 Molar ratio 1: 1.6) mixing;

[0038] (2) Place the mixed material obtained in step (1) in a vacuum furnace, vacuum distill for 1.5 hours under the conditions of controlling the residual pressure in the furnace to 10Pa and the distillation temperature to 600°C, and then cool it down. When the temperature drops below 100°C, Close the vacuum system, take the material after cooling, and obtain the volatile Sb 2 o 3 Product and residue PbS and FeS;

[0039] (3) Put the residues PbS and FeS obtained in step (2) in a vacuum furnace, vacuum distill for 1 hour under the conditions of controlling the residual pressure in the furnace to be 15Pa and the distillation temperature to be 1200°C, and then cool do...

Embodiment 3

[0041] Embodiment 3: the method for separating lead and antimony from this vacuum treatment brittle pyroprobite ore, its specific steps are as follows:

[0042] (1) Combine the brittle pyroprobite and pure Sb after beneficiation 2 o 4 (Pb 4 FeSb 6 S 14 with Sb 2 o 4 molar ratio 1:1.5) mixing;

[0043] (2) Place the mixed material obtained in step (1) in a vacuum furnace, vacuum distill for 1 hour under the conditions of controlling the residual pressure in the furnace to 20Pa and the distillation temperature to 580°C, and then cool it down. When the temperature drops below 100°C, close the Vacuum system, take out material after cooling to obtain volatile Sb 2 o 3 Product and residue PbS and FeS;

[0044] (3) Put the residue PbS and FeS obtained in step (2) in a vacuum furnace, vacuum distill for 0.5h under the conditions of controlling the residual pressure in the furnace to 5Pa and the distillation temperature to 1400°C, and then cool it down. When the temperature dr...

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Abstract

The invention discloses a method for separating lead and antimony of jamesonite concentrate by virtue of vacuum treatment. The method comprises the following steps: separating lead and antimony of dressed jamesonite concentrate under a vacuum condition, adding Sb2O4 or an antimony tetroxide ore in a vacuum treatment process, and generating Sb2O3 at a low temperature of 550-640 DEG C, thereby realizing separation of lead and antimony. The method disclosed by the invention can be used for avoiding the influence caused in incomplete separation of lead and antimony in various processes of a conventional technology, and the method can be used for reducing energy consumption, saving cost and avoiding pollution to environment; Sb2O3 and PbS are directly taken as finished products which can be directly applied to the production of metallic lead and metallic antimony, so that the generation of lead and antimony alloy in a smelting process is avoided.

Description

technical field [0001] The invention relates to a method for separating lead and antimony by vacuum treating brittle pyroprofen ore, belonging to the field of nonferrous metal smelting. Background technique [0002] brittle pyrostibite (Pb 4 FeSb 6 S 14 ) is a complex sulfide ore with polymetallic symbiosis, and it is an important raw material for extracting and recovering antimony (Sb), lead (Pb), silver (Ag) and other valuable metals. The technical key to processing this ore is how to effectively separate lead and antimony. The known treatment method is boiling roasting-reduction smelting, which mainly obtains lead-antimony alloy through high-temperature melting, and then performs repeated oxidation refining and reduction refining on the lead-antimony alloy to obtain metal lead and metal antimony respectively. There are many problems in this smelting method, mainly manifested in the large number of returned materials during the smelting process, long process flow, low ...

Claims

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Application Information

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IPC IPC(8): C22B13/02C22B30/02C22B5/16
Inventor 邓勇杨斌戴永年熊恒徐宝强刘大春郁青春王飞田阳闫华龙王威董朝望曲涛李一夫蒋文龙王宇栋
Owner KUNMING UNIV OF SCI & TECH
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