Beneficiation method for low-grade mixed copper ore containing molybdenum

A beneficiation method and copper ore technology, applied in the beneficiation field of molybdenum-containing low-grade mixed copper ore, can solve problems such as tailings pipeline and bubble generator blockage, and achieve improved concentrate grade, recovery rate, and chemical dosage The effect of reducing and stabilizing the foam

Active Publication Date: 2016-03-30
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the cyclone static micro-bubble flotation column has been applied in the copper-molybdenum separation process, b...

Method used

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  • Beneficiation method for low-grade mixed copper ore containing molybdenum
  • Beneficiation method for low-grade mixed copper ore containing molybdenum
  • Beneficiation method for low-grade mixed copper ore containing molybdenum

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A low-grade copper-molybdenum ore in Nimu County, Tibet, which contains 0.40% Cu, 0.016% Mo, and 15.00% copper oxide. It is a typical low-grade mixed copper ore containing molybdenum.

[0029] Raw ore grinding: After crushing, the raw ore and water are added to the ball mill in a ratio of 1:1 for grinding, and lime (a) 300g / t, sodium sulfide (b) 300g / t, Ammonium sulfate (c) 200g / t (based on the dry weight of the original ore, the same below), the grinding fineness of the grinding product is -74μm accounting for 70%; copper-molybdenum mixed floatation roughing: the pH value of the slurry is 9 Under the conditions of, add 100g / t of collector butyl xanthate (d) and 50g / t of collector foaming agent M201(e) for copper-molybdenum mixed roughing, and the obtained copper-molybdenum mixed crude concentrate enters copper-molybdenum In the beneficiation operation, the rough dressing tailings enter the copper-molybdenum sweeping operation; the copper-molybdenum mixed flotation sweeps ...

Embodiment 2

[0042] A low-grade copper-molybdenum ore in Inner Mongolia contains 0.425% Cu, 0.022% Mo, and 10.21% copper oxide. The copper phase analysis shows that the copper in the ore mainly exists in the form of copper sulfide, and some copper exists in the form of oxides. The ore is a low-grade mixed copper ore. The phase analysis of molybdenum showed that the molybdenum in the ore mainly exists in the form of molybdenum sulfide.

[0043] Raw ore grinding: The crushed raw ore and water are added to the ball mill at a ratio of 1:1 for grinding, and lime (a) 150g / t, sodium sulfide (b) 200g / t, Ammonium sulfate (c) 100g / t, the grinding fineness of the grinding product is -74μm, accounting for 70%; copper-molybdenum mixed flotation roughing operation: under the condition that the pH value of the slurry is 8-9, add the collector D The amount of base xanthate (d) is 60g / t and the amount of collecting foaming agent M201(e) is 30g / t for copper-molybdenum mixed roughing. The obtained copper-molyb...

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Abstract

The invention discloses a beneficiation method for low-grade mixed copper ore containing molybdenum. According to the properties and characteristics of the low-grade mixed copper ore containing molybdenum, the copper and molybdenum bulk floatation and re-separation principle technological process is adopted, and high-efficiency concentration of minerals is achieved by using a combination of butyl xanthate and a high-efficiency collector M201 during copper and molybdenum bulk floatation operation; high-efficiency reagent removal of bulk concentrates is achieved through a concentration dewatering and fine grinding method during copper and molybdenum separation operation so that the impact of a large number of reagents existing in copper-lead bulk concentrates on copper and molybdenum separation can be reduced; and moreover, copper minerals are suppressed by means of suppressant F-6, so that separation of copper and molybdenum is effectively realized, and the copper content and molybdenum content of the concentrates are effectively reduced. Meanwhile, in order to stabilize the floatation indexes, the floatation process is optimized for site production, namely, branching and streaming floatation; accordingly, the purpose of comprehensive recovery and utilization of mineral resources is achieved.

Description

Technical field [0001] The invention belongs to the technical field of non-ferrous metal beneficiation, relates to the beneficiation of copper ore, and specifically relates to a beneficiation method of low-grade mixed copper ore containing molybdenum. Background technique [0002] The beneficiation practice shows that it is common to use flotation to process copper and molybdenum ore. The flotation principle of copper-molybdenum ore mainly includes mixed flotation, priority flotation, and other flotation processes. The key to the selection of the process scheme is that the grade of copper and molybdenum in the original ore and the characteristics of the embedded particle size will affect the dosage of reagents. , Grinding and other links, that is, the level of economic cost of mineral processing and the quality of mineral processing indicators. At the same time, the selection of inhibitors is also a key link in the re-separation of copper and molybdenum. Knox, cyanide, sodium su...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/018B03D101/02B03D101/06B03D103/02
CPCB03B7/00B03D1/018B03D2201/02B03D2201/06B03D2203/02
Inventor 师伟红刘守信吴斌周涛余江鸿顾小玲徐飞飞黄国贤戚福军张红
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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