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A method for recovering antimony and lead from antimony-lead complex sulfide ore

A sulfide ore and complex technology, applied in the field of lead and antimony recovery, can solve the problems of equipment corrosion, high power consumption and alkali consumption, high arsenic content in antimony white, and achieve the effect of clean and efficient comprehensive utilization of resources.

Active Publication Date: 2015-12-09
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problem of high power consumption and alkali consumption in the existing method of wet recovery of antimony and lead in compound antimony concentrate, high arsenic content in recovered antimony white, poor product stability, and damage to equipment. Corrosion is serious, and a method for recovering antimony and lead from complex sulfide ores containing antimony and lead is proposed

Method used

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  • A method for recovering antimony and lead from antimony-lead complex sulfide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The raw ore is crushed and wet-milled to obtain antimony-lead ore pulp with a particle size of less than 74 μm, accounting for 80%. The pulp is electrolytically separated in the ammonium chloride hydrochloride system to produce metal antimony, and the pulp is subjected to liquid-solid separation; 0.9 times the theoretical amount is added to the liquid. Antimony powder, the reaction temperature is 90°C, the reaction time is 1h, the replacement produces metallic silver, and the liquid is returned to the slurry electrolysis process; the slag is dissolved and leached with a calcium chloride solution with a concentration of 300g / L, the pH of the leaching process is 2.0, and the leaching temperature The temperature is 40°C, the time is 3 hours, and the liquid-solid ratio is 5:1. After the leaching is completed, the liquid-solid separation is carried out to produce sulfur residue, and the liquid enters the next step; add 1.0 times the theoretical amount of iron powder to the liq...

Embodiment 2

[0030] The raw ore is crushed and wet-milled to obtain antimony-lead ore pulp with a particle size of less than 74 μm, which accounts for 70%. The pulp is electrolytically separated in the ammonium hydrochloride system to produce metal antimony, and the pulp is subjected to liquid-solid separation; 1.1 times the theoretical amount is added to the liquid. Antimony powder, the reaction temperature is 20°C, the reaction time is 2h, the replacement produces metallic silver, and the liquid is returned to the slurry electrolysis process; the slag is dissolved and leached with a calcium chloride solution with a concentration of 400g / L, the pH of the leaching process is 3.0, and the leaching temperature The temperature is 90℃, the time is 1h, and the liquid-solid ratio is 3:1. After the leaching is completed, the liquid-solid separation is carried out to produce sulfur residue, and the liquid enters the next step; add 1.1 times the theoretical amount of iron powder to the liquid to repl...

Embodiment 3

[0032] After the raw ore is crushed and wet-milled, the antimony-lead ore pulp with a particle size of less than 74 μm, accounting for 90%, is electrolytically separated in the ammonium chloride hydrochloride system to produce metal antimony, and the liquid-solid separation of the pulp is carried out; 0.9 times the theoretical amount is added to the liquid. Antimony powder, the reaction temperature is 90°C, the reaction time is 0.5h, the replacement produces metallic silver, and the liquid is returned to the slurry electrolysis process; the slag is dissolved and leached with a calcium chloride solution with a concentration of 100g / L, and the pH of the leaching process is ~1.0. The temperature is 20°C, the time is 5 hours, and the liquid-solid ratio is 10:1. After the leaching is completed, the liquid-solid separation is carried out to produce sulfur residue, and the liquid enters the next step; add 0.9 times the theoretical amount of iron powder to the liquid to replace the prod...

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Abstract

The invention discloses a method for recovering antimony and lead from complex sulfide ore containing antimony and lead, belonging to the technical field of wet metallurgy. The method comprises the following steps: pulping the complex sulfide ore containing antimony and lead to obtain ore pulp, separating antimony metal out of the ore pulp in a hydrochloric acid-ammonium chloride medium by using an ore pulp electrolytic process, performing solid-liquid separation on the leached ore pulp to obtain leachate and leaching residues; replacing metal silver in the leachate by using the antimony metal to obtain metal silver and an antimony-containing solution; dissolving and leaching the leaching residues by using a calcium chloride solution and performing solid-liquid separation to obtain sulfide residues and a lead-containing solution; replacing the metal lead in the lead-containing solution by using metal iron to obtain metal lead and an iron-containing solution. A process for comprehensively recovering antimony and lead from the complex sulfide ore containing antimony and lead is provided, and is a method for realizing clean, efficient and comprehensive utilization of complex sulfide ore resources containing antimony and lead.

Description

technical field [0001] The invention relates to a method for recovering antimony and lead from complex sulfide ores containing antimony and lead, belonging to the technical field of hydrometallurgy. Background technique [0002] In the mining process of composite antimony ore, antimony is usually associated with lead, silver, arsenic, etc. to form a composite ore with complex mineral structure. For composite antimony concentrates, in terms of hydrometallurgical treatment, the main processes include sodium sulfide leaching-diaphragm electrowinning, new chlorination-hydrolysis, chloride salt chlorination-low-temperature dry distillation and chlorine selective leaching. [0003] The common advantage of the above processes is the elimination of SO 2 For environmental pollution, antimony and lead are completely separated. However, during the electrowinning process of sodium sulfide leaching-diaphragm electrowinning, due to Na 2 S proliferation and Na 2 SO 4 The accumulation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B30/02C22B13/00C25C1/22C22B3/04C22B3/46
CPCY02P10/234Y02P10/20
Inventor 王成彦陈永强杨永强张永禄马保中尹飞邢鹏阮书锋杨卜郜伟居中军杨玮娇柳杨
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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