A kind of beneficiation method of molybdenum-containing low-grade mixed copper ore

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 Lowering, foam stabilization effect

Active Publication Date: 2018-02-13
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, but there are also problems such as frequent blockage of the tailings pipeline and the bubble generator in the flotation column operation

Method used

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  • A kind of beneficiation method of molybdenum-containing low-grade mixed copper ore
  • A kind of beneficiation method of molybdenum-containing low-grade mixed copper ore
  • A kind of beneficiation method of molybdenum-containing low-grade mixed copper ore

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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, is a typical low-grade mixed copper ore containing molybdenum.

[0029] Raw ore grinding: The crushed raw ore and water are added to the ball mill at a ratio of 1:1 for grinding, and the amount of lime (a) 300g / t, sodium sulfide (b) 300g / t, Ammonium sulfate (c) 200g / t (based on the weight of raw ore dry ore, the same below), until the grinding fineness of the grinding product is -74μm, accounting for 70%; copper-molybdenum mixed flotation roughing: when the pH value of the ore pulp is 9 Under certain conditions, the amount of collector butyl xanthate (d) is 100g / t, and the amount of foaming agent M201 (e) is 50g / t for copper-molybdenum mixed roughing, and the obtained copper-molybdenum mixed rough concentrate enters copper-molybdenum Concentration operation, roughing tailings enter copper-molybdenum scavenging operation; copper-molybdenum mixed flotation...

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 phase analysis of copper shows that the copper in the ore mainly exists in the form of copper sulfide, and part of copper exists in the form of oxide. The ore is a low-grade mixed copper ore. The phase analysis results of molybdenum show 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 the amount of lime (a) 150g / t, sodium sulfide (b) 200g / t, Ammonium sulfate (c) 100g / t, until 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 pulp is 8-9, add collector D The amount of base xanthate (d) is 60g / t, and the amount of foaming agent M201 (e) is 30g / t for copper-molybdenum mixed roughing. Coppe...

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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 mineral processing of non-ferrous metals, and relates to the mineral processing of copper ores, in particular to a mineral processing method of molybdenum-containing low-grade mixed copper ores. Background technique [0002] The beneficiation practice shows that it is more common to use flotation to process copper-molybdenum ore. The flotation principle process of copper-molybdenum ore mainly includes three types: mixed flotation, preferential flotation, and equal flotation. The key to the selection of the process plan is that the grade and particle size of copper and molybdenum in the raw ore will affect the dosage of chemicals. , Grinding and other links, that is, the economic cost of mineral processing and the quality of mineral processing indicators. At the same time, the selection of inhibitors is also the key link of copper-molybdenum floating and re-separation. Knox, cyanide, sodium sulfide, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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