Method used for leaching antimony and manganese simultaneously from stibnite and pyrolusite

A technology of stibnite and pyrolusite, which is applied in the field of metallurgy and chemical industry, can solve the problems of large amount of slag, affecting manganese recovery rate, low reduction rate and leaching rate, etc., achieve high leaching rate of antimony and manganese, avoid poor production environment, and reduce resource consumption. The effect of high comprehensive utilization

Active Publication Date: 2018-01-12
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of the two-mine method is that the reduction rate and leaching rate are low, and the amount of slag is large, which affects the recovery rate of manganese. Therefore, it is of great significance to find a suitable reducing agent to participate in the comprehensive recovery of manganese.

Method used

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  • Method used for leaching antimony and manganese simultaneously from stibnite and pyrolusite
  • Method used for leaching antimony and manganese simultaneously from stibnite and pyrolusite
  • Method used for leaching antimony and manganese simultaneously from stibnite and pyrolusite

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Effect test

Embodiment 1

[0045] a kind of like figure 1 The method for simultaneously leaching antimony and manganese from stibnite and pyrolusite of the present invention as shown, specifically comprises the following steps:

[0046] (1) With antimony mass fraction of 42% stibnite, containing MnO 2 The pyrolusite with a mass fraction of 38.18% is the raw material, and the main component of the stibnite is Sb 2 S 3 .

[0047] (2) Configure 500mL of 4mol / L hydrochloric acid, heat the hydrochloric acid to 70 degrees, use the crushed stibnite and pyrolusite with a particle size of 180-250 mesh as raw materials, and weigh it according to Mn / S (molar ratio) 1.2 / 1 After measuring well, add it to the reaction tank filled with hydrochloric acid. The volume of hydrochloric acid is measured according to the liquid-solid ratio (mL / g) of 5 / 1. Stir to make the stibnite and pyrolusite evenly distribute and fully react in hydrochloric acid.

[0048] (3) During the leaching process, the rotational speed is contr...

Embodiment 2

[0053] (1) With antimony mass fraction of 42% stibnite, containing MnO 2 The pyrolusite with a mass fraction of 38.18% is the raw material, and the main component of the stibnite is Sb 2 S 3 .

[0054] (2) Configure 500mL of 5mol / L hydrochloric acid, heat the hydrochloric acid to 80 degrees, weigh the broken particles with a particle size of 180-250 mesh according to the Mn / S (mole) of 1.2 / 1, and add it to a container filled with hydrochloric acid In the reaction tank, the volume of hydrochloric acid is measured as 7 / 1 according to the liquid-solid ratio (mL / g). Stir to make the stibnite and pyrolusite evenly distribute and fully react in hydrochloric acid.

[0055] (3) During the leaching process, the rotational speed is controlled at 500r / min, and the leaching time is 4h.

[0056] (4) After the leaching process, the obtained pulp is filtered while hot at the leaching temperature to obtain a solution mainly composed of antimony chloride and manganese chloride and a slag p...

Embodiment 3

[0060] (1) With antimony mass fraction of 42% stibnite, containing MnO 2 The pyrolusite with a mass fraction of 38.18% is the raw material, and the main component of the stibnite is Sb 2 S 3 .

[0061] (2) Configure 500mL of 5mol / L hydrochloric acid, heat the hydrochloric acid to 90 degrees, weigh the broken particles with a particle size of 180-250 mesh according to the Mn / S (mole) of 1.4 / 1, and add it to a container filled with hydrochloric acid In the reaction tank, the volume of hydrochloric acid is measured as 10 / 1 according to the liquid-solid ratio (mL / g). Stir to make the stibnite and pyrolusite evenly distribute and fully react in hydrochloric acid.

[0062] (3) During the leaching process, the rotational speed is controlled at 600r / min, and the leaching time is 5h.

[0063] (4) After the leaching process, the obtained pulp is filtered while hot at the leaching temperature to obtain a solution mainly composed of antimony chloride and manganese chloride and a slag ...

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Abstract

The invention discloses a method used for leaching antimony and manganese simultaneously from stibnite and pyrolusite. The method comprises the steps that (1) the stibnite and pyrolusite are disposedin hydrochloric acid solutions to be leached simultaneously, and then liquid-solid separation is conducted on leached ore pulp to obtain leaching liquid I containing antimony manganese salt solutionsand sulfur-containing leaching residue; (2) antimony powder is added to the leaching liquid I for restoring to obtain leaching liquid II with antimony butter and manganese chloride as priority; and (3) the leaching liquid II is hydrolyzed, and antimony oxychloride hydrolysis residue and manganese chloride solutions can be obtained after liquid-solid separation. A wet process is adopted to leach the antimony and the manganese simultaneously from the stibnite and the pyrolusite, and poor production environment, serious sulfur dioxide pollution and other problems in the pyrometallurgy process areeffectively avoided. The method is suitable for low-grade stibnite and low-grade pyrolusite to improve the utilization rate of increasingly depleted antimony ore and manganese ore resources and reduce environmental pollution.

Description

technical field [0001] The invention belongs to the field of metallurgy and chemical industry, and in particular relates to a method for simultaneously leaching stibnite and pyrolusite. Background technique [0002] With the rapid development of economy and science and technology in today's world, the application fields of antimony are becoming more and more extensive. It can be used to produce various flame retardants, glass, rubber, semiconductor components, etc. At present, antimony flame retardant is the main application field of antimony, accounting for about 70% of the world's antimony sales. China is a country with large antimony resources in the world, and its antimony reserves and output both rank first in the world. Stibnite is the main antimony deposit, it is a kind of Sb 2 S 3 Mainly sulfide ore. There are two main methods of extracting antimony from antimony ore: fire method and wet method. The fire method is mainly composed of volatilization smelting and re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/10C22B3/44C22B30/02C22B47/00
CPCY02P10/20
Inventor 湛菁陈军
Owner CENT SOUTH UNIV
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