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Beneficiation method for treating combined copper oxide ore and recovering associated valuable metals

A technology that combines copper oxide and valuable metals, applied in chemical instruments and methods, flotation, solid separation, etc., can solve problems such as poor operability, difficult processing, and comprehensive recovery of difficult multi-metals, and achieve the advantages of mineral processing indicators Obvious, simple process, simple beneficiation process

Inactive Publication Date: 2013-06-12
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The flotation process is difficult to process complex and refractory copper oxide ore, and the flotation agent for copper oxide is difficult to choose, the product index is not ideal, and the cost of flotation agent is high;
[0006] (2) Wet leaching treatment of high calcium and magnesium type bonded copper oxide consumes a large amount of leaching agent and the leaching cost is high
[0007] (3) It is also difficult to combine copper oxide with reduction roasting-leaching process, the operability is not strong, and the cost is relatively high;
[0008] (4) It is difficult to realize the comprehensive recovery of polymetallic, and the product is single

Method used

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  • Beneficiation method for treating combined copper oxide ore and recovering associated valuable metals
  • Beneficiation method for treating combined copper oxide ore and recovering associated valuable metals
  • Beneficiation method for treating combined copper oxide ore and recovering associated valuable metals

Examples

Experimental program
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Effect test

Embodiment 1

[0033]The ore from the Ganzi area of ​​Sichuan is used. The raw ore contains 1.2-1.8% Cu, 12.68-20.12% Fe, and 0.8-1.26% Ni, which is a typical copper-nickel oxide ore. Copper in the ore is mainly composed of chrysocolla, with high content of magnesium oxide and calcium oxide, mainly in the form of carbonate, with complex mineral composition and fine particle size. Use a crusher to crush the ore to a size below 3 mm, then place it in a drying furnace for drying at a temperature of 200°C, and control the external moisture to less than 10%; use a Raymond mill to dry grind the crushed ore below 3 mm to powdery mineral powder with a particle size of less than 100 mesh (0.154mm); use a Raymond mill to dry coke to a particle size of less than 0.5 mm; ) after mixing at a low temperature below 50°C to prepare the chlorinating agent; use (mass percentage) 5% chlorinating agent, 3% coke (particle size less than 0.5mm) and particle size less than 100 mesh (0.154mm ) after mixing the pow...

Embodiment 2

[0039] The raw ore in Diqing Prefecture, Yunnan Province is used. The raw ore contains 1.5-2.2% Cu, 42.22-47.68% Fe, and 0.1-0.2% Ni, which is a typical copper oxide iron ore. The ore is crushed with a crusher to less than 3 mm, and then placed in a drying furnace for drying. The drying temperature is 300 ° C, and the external moisture is controlled to be less than 10%; the dried crushed ore less than 3 mm is dry ground to Powdered mineral powder with a particle size of less than 100 mesh (0.154mm); use Raymond mill to dry coke to a particle size of less than 0.5 mm; use (mass percentage) 10% chlorinating agent, 7% coke (particle size is less than 0.5 mm) After mixing with powdered ore powder with a particle size of less than 100 mesh (0.154mm), use a pelletizer to prepare pellets of -10+5mm and put them into a drying furnace at a drying temperature of 400°C to control the pellets The external moisture is less than 10%; put the dried pellets into the roasting furnace, the roas...

Embodiment 3

[0045] The raw ore from the Delni area of ​​Qinghai is used. The raw ore contains 0.8-1.2% Cu, 14.68-21.03% Fe, and 0.7-1.20% Ni, which is a typical copper oxide nickel polymetallic ore. Use a crusher to crush the ore to less than 3 mm and put it in a drying furnace for drying. The drying temperature is 250 ° C, and the external moisture is controlled to be less than 10%. Use a Raymond mill to dry the crushed ore less than 3 mm. to powdered mineral powder with a particle size of less than 100 mesh (0.154mm); use Raymond mill to dry coke to a particle size of less than 0.5 mm; use (mass percentage) 3% chlorinating agent, 5% coke (particle size ) and powdered ore powder with a particle size of less than 100 mesh (0.154mm) are mixed, and the pellets are prepared into -10+5mm pellets by a pellet machine and then placed in a drying furnace at a drying temperature of 350°C to control the pellets The external moisture of the ore is less than 10%; put the dried pellets into the roasti...

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Abstract

The invention provides a beneficiation method for treating a combined copper oxide ore and recovering associated valuable metals. The beneficiation method comprises the following steps of: (1) smashing the ore; (2) carrying out dry-milling for preparing powder; (3) preparing a reducing agent; (4) preparing a chlorating agent; (5) uniformly mixing materials so as to prepare pellets; (6) placing the pellets in a drying furnace; (7) chloridizing, liquating and roasting; (8) carrying out water quenching; (9) grinding the ore and grading; (10) carrying out flotation to obtain a copper ore concentrate; (11) carrying out low intensity magnetic separation to obtain an iron ore concentrate or nickel ore concentrate; and (12) dewatering and drying the ore concentrates. The beneficiation method has the characteristics of high product quality in treatment of copper oxide ores, strong operability, simple technological process and the like, is used for well recovering associated valuable metals while treating the multi-metal combined copper oxide core, and provides a new technology for complex combined copper oxide ore resources which are difficult to treat. According to the beneficiation method, the copper ore concentrate product with more than or equal to 23% of copper grade and more than or equal to 90% of copper recovery rate is obtained, the iron ore concentrate product with more than or equal to 65% of iron grade and more than or equal to 70% of iron recovery rate is obtained, or the nickel ore concentrate product with more than or equal to 5% of nickel grade and more than or equal to 75% of nickel recovery rate is obtained.

Description

technical field [0001] The invention belongs to the technical field of mineral processing engineering, in particular to the processing of complex refractory copper oxide ores, that is, the beneficiation method of polymetallic copper oxide and carbonate type copper oxide ores with high calcium and magnesium content. Background technique [0002] Copper is one of the important non-ferrous metals, and it is second only to aluminum in terms of current production and sales of non-ferrous metals. Copper is mainly extracted from sulfide ores, and its reserves are relatively abundant. However, as far as the world's copper resources are concerned, there are about 10% to 15% of the oxide ore in each copper mining area. Since the 20th century, people have done a lot of research on various types of copper oxide ores, and achieved great results in theory and practice. In summary, it can be roughly divided into two categories: one is flotation, which is used to process easy-to-select c...

Claims

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Application Information

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IPC IPC(8): C22B1/08B03D1/00B03C1/00C22B15/00C22B23/00
Inventor 肖军辉樊珊萍
Owner SOUTHWEAT UNIV OF SCI & TECH
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