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Wet metallurgical method with comprehensive reclamation, basically no three wastes and zero discharge

A hydrometallurgy and zero-emission technology, applied in the direction of process efficiency improvement, etc., can solve the problems of not paying attention to, maintaining and managing the responsibility and concept of the earth, and the concept of less investment, so as to achieve large profits, realize circular economy, and reduce costs. low effect

Inactive Publication Date: 2011-10-12
王钧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, most of the investment is to treat the head of the headache and the foot of the foot, and the investment in theoretical research and technology such as equipment is too little, or not paid attention to at all; fifth, the responsibility and concept of maintaining and managing the earth have not yet been formed

Method used

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  • Wet metallurgical method with comprehensive reclamation, basically no three wastes and zero discharge
  • Wet metallurgical method with comprehensive reclamation, basically no three wastes and zero discharge
  • Wet metallurgical method with comprehensive reclamation, basically no three wastes and zero discharge

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0041] Example two stibnite

[0042] 3 kg of stibnite, crushed to ≥80 mesh, the main element content of the raw material is shown in Table 4.

[0043] Table 4 Composition and content of stibnite

[0044] name

Sb

S

Fe

SiO 2

Pb

Bi

Zn

Cu

As

Au

content(%)

15.0

18.1

15.98

35.2

3.1

0.8

1.5

1.2

0.01

2.5g / t

[0045] Raw material 3kg was leached in 3 times, 1kg for each leaching, the first raw material was added with 0.3L of water, and 1:1 HCl was added to keep the remaining acidity of the solution at ≥ 1mol / L; add NH 4 Cl 10g, reaction temperature 50-70°C, reaction 4h. After the leaching of the first raw material is completed, filter and wash, use 0.3L of the leaching liquid and washing liquid for the leaching of the second 1kg raw material, add 1:1 HCl to keep the remaining acidity of the solution at ≥ 1mol / L; add NH 4 The amount of Cl is such that the NH in the solut...

Embodiment 3

[0056] Embodiment three copper ore

[0057] 10kg of copper ore, grind to ≥80 mesh, the main element content of the raw material is shown in Table 7.

[0058] Table 7 Composition and content of copper ore

[0059] name

Cu

SiO 2

Fe

Pb

Zn

co

Ni

Al

Ca

content(%)

0.51

45.20

18.10

0.2

0.4

0.01

0.1

5.10

3.10

name

Mg

Mo

WO 3

sn

Bi

Ag

Au

S

content(%)

1.50

0.01

0.05

0.04

0.05

1.5g / t

0.3g / t

1.5

[0060] Leaching method and result:

[0061] The raw material is divided into 10 parts, each 1kg.

[0062] Each part of raw material is stirred and leached in a closed reaction vessel. Add 2dm to the 1st ingredient 3 Water, subsequent raw materials are recycled using the leachate, so only when less than 2dm of the leachate is returned 3 When, just add water to supplement; Add the concentrated ...

example 4

[0074] Example four molybdenum nickel ore

[0075] 400g of nickel-molybdenum ore, crushed to ≥300 mesh, the main components in the raw material are shown in Table 9.

[0076] Table 9 Molybdenum nickel ore composition and content

[0077]

[0078] The raw material is divided into 4 parts for acid oxidation leaching, each part is 100g, and the liquid-solid ratio is 2:1. When the first raw material is leached, the leaching solution is 200ml water, 50g concentrated H 2 SO 4 , add 1gNH 4 Cl as complexing agent, adding NaClO 3 40g as oxidizing agent. When the last 3 raw materials are leached, the leaching solution is used for recycling. When the volume of the leaching solution used for recycling is less than 200ml, water is added. According to the last leaching consumption of H 2 SO 4 amount, add concentrated H accordingly 2 SO 4 , making the solution concentrated in H 2 SO 4 The amount is 50% of raw material weight; Test condition and result are as shown in table 10. ...

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Abstract

The invention discloses a wet metallurgical method with comprehensive reclamation, basically no three wastes and zero discharge, and belongs to the fields of wet metallurgy and environmental friendliness. Aiming at the problems that the conventional wet metallurgical process can only reclaim partial valuable elements serving as commodities and produces a large amount of waste water, waste slag and waste gas so as to cause resource waste and generate environmental hazards, the invention provides the new wet metallurgical method. The method is characterized in that: scattered components, rare components, rare earth, noble metals and other valuable components can reach optimal leaching rate and enter the solution by adopting a high-strength leaching agent such as a high acid oxidation and complexing leaching agent or a high alkali oxidation and complexing leaching agent and using high-strength physical and chemical conditions such as high-temperature and high-pressure leaching. By high-strength leaching, the filtered and washed leached slag reaches the standards of raw materials of building materials or standards for making of iron, aluminum and the like and other chemical raw materials. In order to achieve comprehensive, effective and economic separation and purification and make auxiliary materials such as the leaching agent and the like not wasted, recycle of leachate and waste water is adopted, so that the purposes of comprehensive reclamation, basically no three wastes and zero discharge are basically fulfilled. Therefore, the wet metallurgical technology is more economic, more effective, energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to comprehensive recovery of various components in minerals, metallurgical slag and waste materials into commodities by using a hydrometallurgy method, and basically achieves no three wastes and zero discharge, and its technology belongs to the field of hydrometallurgy and environmental protection. Background technique [0002] Hydrometallurgy is an indispensable process technology for the vigorous development of our country and the world and human beings. It can separate various valuable trace, semi-trace and constant elements and compounds from raw materials such as minerals, metallurgical slag and / or waste materials, Various metals, non-metals and compounds are produced, which become indispensable raw materials and products in the fields of national economy, national defense construction and science and technology. Scientific and technological workers in my country and the world have made great contributions to this, and establ...

Claims

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Application Information

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IPC IPC(8): C22B3/04C22B3/08C22B3/10C22B3/14
CPCC22B3/04Y02P10/20
Inventor 王钧王秀珍徐进勇
Owner 王钧
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