Method for separating lead and antimony from jamesonite

A technology of brittle sulfur-lead-antimony ore and sodium thioantimonate, applied in the direction of improving process efficiency, etc., can solve the problem of incomplete separation of lead and antimony, and achieve a good effect of separation of lead and antimony

Inactive Publication Date: 2015-04-22
广西冶金研究院有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for the separation of lead and antimony in brittle sulfur lead antimony ore, which can solve the problem of incomplete separation of lead and antimony in pyrometallurgy, and can greatly improve the metal recovery rate of Sb, Pb and Ag at the same time

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  • Method for separating lead and antimony from jamesonite

Examples

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Embodiment 1

[0044] The method for the separation of lead and antimony in the brittle pyroprobite of the present invention comprises the following steps:

[0045] Raw material composition and content:

[0046] The brittle sulfur-lead-antimony concentrate contains Sb24.17%, Pb26.75%, Ag850g / t, Fe11.31%, S23.08%, Zn6.68%, moisture 1.85%.

[0047] First, the brittle sulfur-lead-antimony concentrate is ground into a fine powder of 100-200 mesh, 70% of which reaches 200 mesh. Then use Na 2 S Two-stage leaching, adding sulfur as an additive during the leaching process, the specific control technical conditions are:

[0048] One-stage leaching: 1000 grams of brittle sulfur-lead-antimony concentrate, liquid-solid ratio 3:1, Na 2 S concentration of 90g / l, sulfur 50g, NaOH 30g / l, stirring, reacting at a temperature of 95-105°C for 1 hour, filtering to obtain a section of leach residue and filtrate, the filtrate was naturally cooled, and sodium thioantimonate crystallized and precipitated.

[004...

Embodiment 2

[0054] Another example of the method for the separation of lead and antimony in the brittle pyrostibite of the present invention comprises the steps:

[0055] Raw material composition and content:

[0056] Composition of brittle pyrobenite: Sb22.92%, Pb25.70%, Ag803.59g / t, Fe14.46%, S24.86%, moisture 2.02%.

[0057] Firstly, the brittle sulfur-lead-antimony ore is ground into a fine powder of 100-200 mesh, 70% of which reaches 200 mesh. Then use Na 2 S Two-stage leaching, adding sulfur as an additive during the leaching process, the specific control technical conditions are:

[0058] One-stage leaching: 1000 grams of brittle sulfur-lead-antimony concentrate, the liquid-solid ratio is 4:1, the NaOH content in the solution is 70g / l, NaOH 2 The S content is 70g / l, sulfur is 60g, stirred, reacted at a temperature of 95-105°C for 1 hour, filtered to obtain a section of leach residue and filtrate, the filtrate is naturally cooled, and sodium thioantimonate crystallizes out.

[0...

example

[0064] The third example of the method for the separation of lead and antimony in the brittle pyrostibite of the present invention comprises the steps:

[0065] Raw material composition and content:

[0066] The brittle sulfur-lead-antimony concentrate contains Sb24.17%, Pb26.75%, Ag850g / t, Fe11.31%, S23.08%, Zn6.68%, moisture 1.85%.

[0067] First, the brittle sulfur-lead-antimony concentrate is ground into a fine powder of 100-200 mesh, 70% of which reaches 200 mesh. Then use Na 2 S Two-stage leaching, adding sulfur as an additive during the leaching process, the specific control technical conditions are:

[0068] One-stage leaching: brittle sulfur-lead-antimony concentrate 1000g, liquid-solid ratio 3:1, sulfur 36g, add 3000ml circulating mother liquor of a certain leaching, Na in the mother liquor 2 S content 27.27g / l, NaOH 60.9g / l, add Na 2 S to 80g / l, stirred, reacted at 95-105°C for 1 hour, filtered to obtain a section of leach residue and filtrate, the filtrate was ...

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Abstract

A method for separating lead and antimony from jamesonite comprises the following steps: leaching jamesonite by using a sodium sulfide wet method, at the same time adding sulphur to generate sodium sulfantimonate, precipitating at normal temperature by crystallization to obtain sodium sulfantimonate crystal and lead-silver slag and further to realize pre-separation of lead and antimony, performing pyrometallurgucal process on the lead-silver slag for obtaining of lead and silver; and reacting sodium sulfantimonate crystal with ferrous sulphate to obtain ferric thioantimonate, and performing pyrometallurgucal process for obtain of antimony. The method helps to solve the problem that lead-antimony separation is not thorough in conventional pyrometallurgucal process, and also helps to substantially improve metal recovery rate of Sb, Pb and Ab. Tests prove that the leaching rate of antimony in wet-method leaching stage reaches up to 95%-98%, and the lead-antimony separation effect is good; the recovery rate of Pb in the lead-silver slag is more than 99%, and the recovery rate of Ag is more than 99%; and the whole-flow comprehensive recovery rate of Sb reaches 94.87%.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal metallurgy, in particular to a method for separating lead and antimony from brittle pyroprobite. Background technique [0002] Brittle pyrostibite is a complex mineral with high value and difficult comprehensive recycling. It is a complex sulfide ore in which antimony, lead, iron, silver, zinc, tin, bismuth, arsenic and other metals coexist. For antimony concentrate, lead and antimony can only be separated by metallurgical methods. [0003] The traditional smelting methods of brittle sulfur-lead-antimony ore include wet leaching and pyrometallurgy. Sodium sulfide alkaline wet leaching is one of them. [0004] Sodium sulfide leaching of brittle pyrotide antimony ore-electrowinning method: using Na 2 S leaches the brittle sulphurite at one time to generate sodium thioantimonite. After filtering and washing, the filtrate is electro-deposited again. The advantage of sodium sulfide leach...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B30/02C22B3/04C22B13/00C22B11/00
CPCY02P10/20
Inventor 郭旦奇柯剑华何航军覃用宁满露梅何厚华李浩铭陈克勤谢营邦罗朝巍
Owner 广西冶金研究院有限公司
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