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Beneficiation method for fine utilization of high-sulfide type shallow copper ore and tailings thereof

A beneficiation method and vulcanization-type technology, which is applied in the mineral processing field of high-sulfurization epigenetic copper ore and its tailing fine utilization, can solve the problem of undiscovered mineral processing method for multi-purpose resource utilization, and achieve the solution of tailings pile problematic effect

Active Publication Date: 2022-01-14
ZIJIN MINING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After searching by the inventor, no beneficiation method has been found to efficiently recover valuable elements and their gangue minerals for multi-purpose resource utilization from the low-grade copper ore of the blue chalcocite-cooperite-copperite-alumite mineral combination

Method used

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  • Beneficiation method for fine utilization of high-sulfide type shallow copper ore and tailings thereof
  • Beneficiation method for fine utilization of high-sulfide type shallow copper ore and tailings thereof
  • Beneficiation method for fine utilization of high-sulfide type shallow copper ore and tailings thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: The crushed raw ore enters the classification circuit of the mill, and the dosage of calcium oxide is added to this circuit at 1000g / t, and the classification overflow fineness is controlled at -0.074mm, accounting for 55%, and then copper and sulfur are preferentially flotation in sequence . In the copper selection circuit, the amount of water glass added is roughly 425g / t, finely selected 25g / t, and the amount of butyl xanthate + butylammonium black medicine (mixed agent prepared at a mass ratio of 1:3) is roughly 60g / t. Choose 20g / t, the amount of No. 2 oil is roughly 25g / t, sweeping 5g / t; add butyl xanthate in the sulfur selection circuit, the amount of roughing is 40g / t, sweeping 10g / t, the amount of No. 2 oil is rough 15g / t is selected, 5g / t is swept; the copper and sulfur flotation foams are thickened and filtered to obtain copper concentrate and sulfur concentrate respectively, and the overflow and filtrate are recycled. The tailings after copper-sul...

Embodiment 2

[0036] Example 2: The crushed raw ore enters the classification circuit of the mill, and the dosage of calcium oxide is added to this circuit at 1100g / t, and the classification overflow fineness is controlled at -0.074mm, which accounts for 58%, and then copper and sulfur are preferentially flotation in sequence . Add sodium hexametaphosphate to the copper selection circuit in the amount of rough selection 435g / t, fine selection 35g / t, PAC+Z-200 (mixed agent prepared at a mass ratio of 1:2) dosage of rough selection 65g / t, sweep 25g / t, MIBC dosage is 27g / t for rough selection and 7g / t for sweeping; add PAC in the sulfur selection circuit for roughing 45g / t, sweeping 15g / t, MIBC dosage for roughing 17g / t, and sweeping 7g / t ; Copper and sulfur flotation foams are thickened and filtered to obtain copper concentrate and sulfur concentrate respectively, and the overflow and filtrate are recycled. The tailings after copper-sulfur flotation are subjected to enhanced sulfur-selectio...

Embodiment 3

[0037]Example 3: The crushed raw ore enters the grading circuit of the mill, and the dosage of calcium oxide is added to this circuit at 1200g / t, and the fineness of the grading overflow product is controlled at -0.074mm, accounting for 60%, and then the copper and sulfur are preferentially floated sequentially select. In the copper selection circuit, add water glass in the amount of rough selection 450g / t, fine selection 50g / t, Y89 + butylammonium black drug (mixed agent prepared at a mass ratio of 1:1) dosage of rough selection 70g / t, sweeping 30g / t , No. 2 oil + MIBC (mixed agent prepared according to the mass ratio of 1:1) roughing 30g / t, sweeping 10g / t; adding Y89 in the sulfur selection circuit, roughing 50g / t, sweeping 20g / t , No. 2 oil + MIBC roughing 20g / t, sweeping 10g / t; copper and sulfur flotation froths are thickened and filtered to obtain copper concentrate and sulfur concentrate respectively, overflow and filtrate are recycled. The tailings after copper-sulfur ...

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Abstract

The invention relates to a beneficiation method for fine utilization of high-sulfide type shallow copper ore and tailings thereof. The beneficiation method comprises the following steps of analyzing chemical components, mineral composition, dissemination granularity and granularity composition characteristics of the high-sulfide type shallow low-grade copper ore; and adopting a technical route of stage grinding separation, separation of copper-sulfur minerals and complex sulfate minerals, multilayer grading of gangue minerals, superfine grinding and wastewater full-flow recycling, and a product route of copper concentrate, sulfur concentrate, alunite concentrate, coarse sand, fine sand and micro powder. The beneficiation method has the advantages that copper and sulfur elements can be completely recycled, no tailings are generated, zero wastewater discharge is realized, gangue minerals are comprehensively utilized according to different chemical components and particle size characteristics, the problem of tailing stockpiling is solved from the source, and huge economic benefits are created; and the method is suitable for copper tailing treatment and application.

Description

technical field [0001] The invention relates to a beneficiation method for the refined utilization of high-sulfurization episynthetic copper ore and its tailings, specifically a low-grade mineral combination from blue chalcocite-copper blue-copperite-alumite A beneficiation method for efficiently recovering valuable elements and their gangue minerals from copper mines for multi-purpose resource utilization. Background technique [0002] According to the data in the "2019 China Solid Waste Treatment Industry Analysis Report", the discharge of copper tailings in my country has reached 224 million t / a. Copper tailings are generally disposed of in tailings ponds for storage. With the continuous increase of copper tailings emissions, the number of tailings ponds in my country is also increasing. According to incomplete statistics, the cumulative stock of tailings in my country has exceeded 15 billion tons, of which copper tailings accounted for a quarter, second only to iron tai...

Claims

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Application Information

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IPC IPC(8): B03B9/00
CPCB03B9/00Y02P10/20
Inventor 鲁军邓莉莉王滔温建李广岳涛林秀培黄晟徐先龙詹健方娴
Owner ZIJIN MINING GROUP
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