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Flotation process for charcoal clay-containing pyrite

A pyrite and flotation technology, applied in flotation, solid separation, etc., can solve the problems of deterioration of flotation process, no sortability, large specific surface area, etc., to improve collection capacity and selectivity, and ensure quality And sortability, the effect of high sorting efficiency

Active Publication Date: 2013-03-20
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gravity separation method generally adopts spiral chute, jig and shaking table for separation, which is suitable for processing pyrite with coarse grain embedded distribution, and the separation efficiency for fine grain embedded pyrite is very poor.
The flotation method generally uses xanthate collectors and 2# oil for separation, which is suitable for the separation of pyrite mainly composed of silicate gangue minerals and pyrite mainly composed of carbonate gangue minerals It is especially suitable for sorting fine-grained or disseminated pyrite, but for pyrite with more charcoal and argillaceous content and coal-measure pyrite, it can only be carried out by adding xanthate collector and 2# oil. Sorting, the sorting performance is very poor, or even no sorting performance, the main reason is that the carbon peg mineral particles are small, the specific surface area is large, and they are non-selectively adsorbed on the mineral surface, which seriously affects the normal flotation of pyrite, making The flotation process deteriorates. Some technicians reduce the interference of carbon peg matter on the flotation process by adding water glass, but the effect is not obvious. So far there is no effective solution

Method used

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  • Flotation process for charcoal clay-containing pyrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1. Reference figure 1 . A flotation process of charcoal-containing peat pyrite, its steps are:

[0020] (1) Take raw pyrite ore, crush and grind to dissociate the constituent mineral monomers, and then add water to adjust the slurry to a slurry with a concentration of 20% by weight;

[0021] (2) After the slurry flows into the stirring tank, add regulators, collectors and foaming agents to the slurry to adjust the slurry; the mixed materials enter the flotation system for flotation. The flotation process is one rough separation and three times Fine selection, re-selection of the ore in the first concentrate; add one or more of regulators, collectors and air bubbles according to the needs of each operation; during flotation: the product in the roughing tank is flotation tailing 1, which is discharged and stacked , The rough foam is selected once, the product in the first selection tank is a concentrated ore for re-selection, the product in the second tank is tailin...

Embodiment 2

[0022] Example 2. Reference figure 1 . A flotation process of charcoal-containing peat pyrite, its steps are:

[0023] (1) Take raw pyrite ore, crush and grind to dissociate the constituent mineral monomers, and then add water to adjust the slurry to a slurry with a concentration of 50% by weight;

[0024] (2) After the slurry flows into the stirring tank, add regulators, collectors and foaming agents to the slurry to adjust the slurry; the mixed materials enter the flotation system for flotation. The flotation process is one rough separation and three times Fine selection, re-selection of the ore in the first concentrate; add one or more of regulators, collectors and air bubbles according to the needs of each operation; during flotation: the product in the roughing tank is flotation tailing 1, which is discharged and stacked , The rough foam is selected once, the product in the first selection tank is a concentrated ore for re-selection, the product in the second tank is tailin...

Embodiment 3

[0025] Example 3. Reference figure 1 . A flotation process of charcoal-containing argillaceous pyrite. The steps are as follows: the char-containing argillaceous pyrite ore is crushed and ground to dissociate the constituent mineral monomers, and water is added to adjust the slurry to a concentration of 30%. , And then flow into the stirring tank, and then add regulators, collectors and foaming agents to the slurry to adjust the slurry. The adjusted materials enter the flotation system for flotation. The flotation process is one roughing, three selections and one The refined medium ore is re-selected. The product in the roughing tank is the flotation tailings 1, which is discharged and stacked. The roughing foam is mixed with regulators, collectors and foaming agents, and then the product is selected once. After adding regulators, collectors and foaming agents to the first fine ore, it is re-selected, and the product in the tank is tailings 2, and the tailings 1 are combined ...

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Abstract

The invention discloses a flotation process for charcoal clay-containing pyrite. The flotation process comprises the following steps of: taking a pyrite ore raw material, crushing and grinding the pyrite ore to dissociate mineral monomer, and then adding water into the ground ore to form ore pulp; after the ore pulp flows into a stirring tank, adding an adjusting agent, a collecting agent and a foaming agent into the ore pulp to condition the pulp respectively; and feeding the pulp conditioned material into a flotation system to perform flotation, wherein the flotation process comprises one-time rough flotation, at least three times of fine flotation and one-time fine middling re-cleaning. One or more of the adjusting agent, the collecting agent and the foaming agent is or are added in each operation as required; and the adjusting agent for flotation is lignin, the collecting agent is mixed xanthate of ethyl xanthate and butyl xanthate, and the foaming agent is No.2 oil. The process successfully realizes ore dressing enrichment of the charcoal clay-containing pyrite, and has the advantages of high separation efficiency, excellent process index, high quality of the obtained pyrite concentrate and the like.

Description

Technical field [0001] The invention is a sulfide mineral flotation process, and particularly relates to a flotation process of charcoal-containing argillaceous pyrite suitable for carbonaceous argillaceous and coal-based pyrite. Background technique [0002] Pyrite is an important resource for industrial sulfur in my country, and an important raw material for the production of basic chemical products such as sulfur, sulfuric acid, and sulfite. According to the types of gangue minerals, pyrite can be divided into pyrite ore dominated by silicate gangue minerals, pyrite ore dominated by carbonate gangue minerals, and coal-based pyrite ore. my country is rich in pyrite resources, but there are few rich ores and many poor ores. Most of them must be enriched by beneficiation. At present, the pyrite beneficiation method used in China is mainly the flotation method, and a few use the gravity separation method. The gravity separation method generally uses spiral chute, jig and shaker ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/02B03D1/012
Inventor 钱押林张红茹朱孔金刘星强
Owner BLUESTAR LEHIGH ENG INST CO LTD